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| 1 | /* -*- Mode: c; c-basic-offset: 4; indent-tabs-mode: t; tab-width: 8; -*- */ |
| 2 | /* cairo - a vector graphics library with display and print output |
| 3 | * |
| 4 | * Copyright © 2002 University of Southern California |
| 5 | * Copyright © 2005 Red Hat, Inc. |
| 6 | * Copyright © 2011 Intel Corporation |
| 7 | * |
| 8 | * This library is free software; you can redistribute it and/or |
| 9 | * modify it either under the terms of the GNU Lesser General Public |
| 10 | * License version 2.1 as published by the Free Software Foundation |
| 11 | * (the "LGPL") or, at your option, under the terms of the Mozilla |
| 12 | * Public License Version 1.1 (the "MPL"). If you do not alter this |
| 13 | * notice, a recipient may use your version of this file under either |
| 14 | * the MPL or the LGPL. |
| 15 | * |
| 16 | * You should have received a copy of the LGPL along with this library |
| 17 | * in the file COPYING-LGPL-2.1; if not, write to the Free Software |
| 18 | * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA |
| 19 | * You should have received a copy of the MPL along with this library |
| 20 | * in the file COPYING-MPL-1.1 |
| 21 | * |
| 22 | * The contents of this file are subject to the Mozilla Public License |
| 23 | * Version 1.1 (the "License"); you may not use this file except in |
| 24 | * compliance with the License. You may obtain a copy of the License at |
| 25 | * http://www.mozilla.org/MPL/ |
| 26 | * |
| 27 | * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY |
| 28 | * OF ANY KIND, either express or implied. See the LGPL or the MPL for |
| 29 | * the specific language governing rights and limitations. |
| 30 | * |
| 31 | * The Original Code is the cairo graphics library. |
| 32 | * |
| 33 | * The Initial Developer of the Original Code is University of Southern |
| 34 | * California. |
| 35 | * |
| 36 | * Contributor(s): |
| 37 | * Carl D. Worth <cworth@cworth.org> |
| 38 | * Chris Wilson <chris@chris-wilson.co.uk> |
| 39 | */ |
| 40 | |
| 41 | #include "cairoint.h" |
| 42 | #include "cairo-private.h" |
| 43 | |
| 44 | #include "cairo-backend-private.h" |
| 45 | #include "cairo-error-private.h" |
| 46 | #include "cairo-path-private.h" |
| 47 | #include "cairo-pattern-private.h" |
| 48 | #include "cairo-surface-private.h" |
| 49 | #include "cairo-surface-backend-private.h" |
| 50 | |
| 51 | #include <assert.h> |
| 52 | |
| 53 | /** |
| 54 | * SECTION:cairo |
| 55 | * @Title: cairo_t |
| 56 | * @Short_Description: The cairo drawing context |
| 57 | * @See_Also: #cairo_surface_t |
| 58 | * |
| 59 | * #cairo_t is the main object used when drawing with cairo. To |
| 60 | * draw with cairo, you create a #cairo_t, set the target surface, |
| 61 | * and drawing options for the #cairo_t, create shapes with |
| 62 | * functions like cairo_move_to() and cairo_line_to(), and then |
| 63 | * draw shapes with cairo_stroke() or cairo_fill(). |
| 64 | * |
| 65 | * #cairo_t<!-- -->'s can be pushed to a stack via cairo_save(). |
| 66 | * They may then safely be changed, without losing the current state. |
| 67 | * Use cairo_restore() to restore to the saved state. |
| 68 | **/ |
| 69 | |
| 70 | /** |
| 71 | * SECTION:cairo-text |
| 72 | * @Title: text |
| 73 | * @Short_Description: Rendering text and glyphs |
| 74 | * @See_Also: #cairo_font_face_t, #cairo_scaled_font_t, cairo_text_path(), |
| 75 | * cairo_glyph_path() |
| 76 | * |
| 77 | * The functions with <emphasis>text</emphasis> in their name form cairo's |
| 78 | * <firstterm>toy</firstterm> text API. The toy API takes UTF-8 encoded |
| 79 | * text and is limited in its functionality to rendering simple |
| 80 | * left-to-right text with no advanced features. That means for example |
| 81 | * that most complex scripts like Hebrew, Arabic, and Indic scripts are |
| 82 | * out of question. No kerning or correct positioning of diacritical marks |
| 83 | * either. The font selection is pretty limited too and doesn't handle the |
| 84 | * case that the selected font does not cover the characters in the text. |
| 85 | * This set of functions are really that, a toy text API, for testing and |
| 86 | * demonstration purposes. Any serious application should avoid them. |
| 87 | * |
| 88 | * The functions with <emphasis>glyphs</emphasis> in their name form cairo's |
| 89 | * <firstterm>low-level</firstterm> text API. The low-level API relies on |
| 90 | * the user to convert text to a set of glyph indexes and positions. This |
| 91 | * is a very hard problem and is best handled by external libraries, like |
| 92 | * the pangocairo that is part of the Pango text layout and rendering library. |
| 93 | * Pango is available from <ulink |
| 94 | * url="http://www.pango.org/">http://www.pango.org/</ulink>. |
| 95 | **/ |
| 96 | |
| 97 | /** |
| 98 | * SECTION:cairo-transforms |
| 99 | * @Title: Transformations |
| 100 | * @Short_Description: Manipulating the current transformation matrix |
| 101 | * @See_Also: #cairo_matrix_t |
| 102 | * |
| 103 | * The current transformation matrix, <firstterm>ctm</firstterm>, is a |
| 104 | * two-dimensional affine transformation that maps all coordinates and other |
| 105 | * drawing instruments from the <firstterm>user space</firstterm> into the |
| 106 | * surface's canonical coordinate system, also known as the <firstterm>device |
| 107 | * space</firstterm>. |
| 108 | **/ |
| 109 | |
| 110 | /** |
| 111 | * SECTION:cairo-tag |
| 112 | * @Title: Tags and Links |
| 113 | * @Short_Description: Hyperlinks and document structure |
| 114 | * @See_Also: #cairo_pdf_surface_t |
| 115 | * |
| 116 | * The tag functions provide the ability to specify hyperlinks and |
| 117 | * document logical structure on supported backends. The following tags are supported: |
| 118 | * * [Link][link] - Create a hyperlink |
| 119 | * * [Destinations][dest] - Create a hyperlink destination |
| 120 | * * [Document Structure Tags][doc-struct] - Create PDF Document Structure |
| 121 | * |
| 122 | * # Link Tags # {#link} |
| 123 | * A hyperlink is specified by enclosing the hyperlink text with the %CAIRO_TAG_LINK tag. |
| 124 | * |
| 125 | * For example: |
| 126 | * <informalexample><programlisting> |
| 127 | * cairo_tag_begin (cr, CAIRO_TAG_LINK, "uri='https://cairographics.org'"); |
| 128 | * cairo_move_to (cr, 50, 50); |
| 129 | * cairo_show_text (cr, "This is a link to the cairo website."); |
| 130 | * cairo_tag_end (cr, CAIRO_TAG_LINK); |
| 131 | * </programlisting></informalexample> |
| 132 | * |
| 133 | * The PDF backend uses one or more rectangles to define the clickable |
| 134 | * area of the link. By default cairo will use the extents of the |
| 135 | * drawing operations enclosed by the begin/end link tags to define the |
| 136 | * clickable area. In some cases, such as a link split across two |
| 137 | * lines, the default rectangle is undesirable. |
| 138 | * |
| 139 | * @rect: [optional] The "rect" attribute allows the application to |
| 140 | * specify one or more rectangles that form the clickable region. The |
| 141 | * value of this attribute is an array of floats. Each rectangle is |
| 142 | * specified by four elements in the array: x, y, width, height. The |
| 143 | * array size must be a multiple of four. |
| 144 | * |
| 145 | * An example of creating a link with user specified clickable region: |
| 146 | * <informalexample><programlisting> |
| 147 | * struct text { |
| 148 | * const char *s; |
| 149 | * double x, y; |
| 150 | * }; |
| 151 | * const struct text text1 = { "This link is split", 450, 70 }; |
| 152 | * const struct text text2 = { "across two lines", 50, 70 }; |
| 153 | * cairo_text_extents_t text1_extents; |
| 154 | * cairo_text_extents_t text2_extents; |
| 155 | * char attribs[100]; |
| 156 | * |
| 157 | * cairo_text_extents (cr, text1.s, &text1_extents); |
| 158 | * cairo_text_extents (cr, text2.s, &text2_extents); |
| 159 | * sprintf (attribs, |
| 160 | * "rect=[%f %f %f %f %f %f %f %f] uri='https://cairographics.org'", |
| 161 | * text1_extents.x_bearing + text1.x, |
| 162 | * text1_extents.y_bearing + text1.y, |
| 163 | * text1_extents.width, |
| 164 | * text1_extents.height, |
| 165 | * text2_extents.x_bearing + text2.x, |
| 166 | * text2_extents.y_bearing + text2.y, |
| 167 | * text2_extents.width, |
| 168 | * text2_extents.height); |
| 169 | * |
| 170 | * cairo_tag_begin (cr, CAIRO_TAG_LINK, attribs); |
| 171 | * cairo_move_to (cr, text1.x, text1.y); |
| 172 | * cairo_show_text (cr, text1.s); |
| 173 | * cairo_move_to (cr, text2.x, text2.y); |
| 174 | * cairo_show_text (cr, text2.s); |
| 175 | * cairo_tag_end (cr, CAIRO_TAG_LINK); |
| 176 | * </programlisting></informalexample> |
| 177 | * |
| 178 | * There are three types of links. Each type has its own attributes as detailed below. |
| 179 | * * [Internal Links][internal-link] - A link to a location in the same document |
| 180 | * * [URI Links][uri-link] - A link to a Uniform resource identifier |
| 181 | * * [File Links][file-link] - A link to a location in another document |
| 182 | * |
| 183 | * ## Internal Links ## {#internal-link} |
| 184 | * An internal link is a link to a location in the same document. The destination |
| 185 | * is specified with either: |
| 186 | * |
| 187 | * @dest: a UTF-8 string specifying the destination in the PDF file to link |
| 188 | * to. Destinations are created with the %CAIRO_TAG_DEST tag. |
| 189 | * |
| 190 | * or the two attributes: |
| 191 | * |
| 192 | * @page: An integer specifying the page number in the PDF file to link to. |
| 193 | * |
| 194 | * @pos: [optional] An array of two floats specifying the x,y position |
| 195 | * on the page. |
| 196 | * |
| 197 | * An example of the link attributes to link to a page and x,y position: |
| 198 | * <programlisting> |
| 199 | * "page=3 pos=[3.1 6.2]" |
| 200 | * </programlisting> |
| 201 | * |
| 202 | * ## URI Links ## {#uri-link} |
| 203 | * A URI link is a link to a Uniform Resource Identifier ([RFC 2396](http://tools.ietf.org/html/rfc2396)). |
| 204 | * |
| 205 | * A URI is specified with the following attribute: |
| 206 | * |
| 207 | * @uri: An ASCII string specifying the URI. |
| 208 | * |
| 209 | * An example of the link attributes to the cairo website: |
| 210 | * <programlisting> |
| 211 | * "uri='https://cairographics.org'" |
| 212 | * </programlisting> |
| 213 | * |
| 214 | * ## File Links ## {#file-link} |
| 215 | * A file link is a link a location in another PDF file. |
| 216 | * |
| 217 | * The file attribute (required) specifies the name of the PDF file: |
| 218 | * |
| 219 | * @file: File name of PDF file to link to. |
| 220 | * |
| 221 | * The position is specified by either: |
| 222 | * |
| 223 | * @dest: a UTF-8 string specifying the named destination in the PDF file. |
| 224 | * |
| 225 | * or |
| 226 | * |
| 227 | * @page: An integer specifying the page number in the PDF file. |
| 228 | * |
| 229 | * @pos: [optional] An array of two floats specifying the x,y |
| 230 | * position on the page. Position coordinates in external files are in PDF |
| 231 | * coordinates (0,0 at bottom left). |
| 232 | * |
| 233 | * An example of the link attributes to PDF file: |
| 234 | * <programlisting> |
| 235 | * "file='document.pdf' page=16 pos=[25 40]" |
| 236 | * </programlisting> |
| 237 | * |
| 238 | * # Destination Tags # {#dest} |
| 239 | * |
| 240 | * A destination is specified by enclosing the destination drawing |
| 241 | * operations with the %CAIRO_TAG_DEST tag. |
| 242 | * |
| 243 | * @name: [required] A UTF-8 string specifying the name of this destination. |
| 244 | * |
| 245 | * @x: [optional] A float specifying the x coordinate of destination |
| 246 | * position on this page. If not specified the default |
| 247 | * x coordinate is the left side of the extents of the |
| 248 | * operations enclosed by the %CAIRO_TAG_DEST begin/end tags. If |
| 249 | * no operations are enclosed, the x coordidate is 0. |
| 250 | * |
| 251 | * @y: [optional] A float specifying the y coordinate of destination |
| 252 | * position on this page. If not specified the default |
| 253 | * y coordinate is the top of the extents of the |
| 254 | * operations enclosed by the %CAIRO_TAG_DEST begin/end tags. If |
| 255 | * no operations are enclosed, the y coordidate is 0. |
| 256 | * |
| 257 | * @internal: A boolean that if true, the destination name may be |
| 258 | * omitted from PDF where possible. In this case, links |
| 259 | * refer directly to the page and position instead of via |
| 260 | * the named destination table. Note that if this |
| 261 | * destination is referenced by another PDF (see [File Links][file-link]), |
| 262 | * this attribute must be false. Default is false. |
| 263 | * |
| 264 | * <informalexample><programlisting> |
| 265 | * /* Create a hyperlink */ |
| 266 | * cairo_tag_begin (cr, CAIRO_TAG_LINK, "dest='mydest' internal"); |
| 267 | * cairo_move_to (cr, 50, 50); |
| 268 | * cairo_show_text (cr, "This is a hyperlink."); |
| 269 | * cairo_tag_end (cr, CAIRO_TAG_LINK); |
| 270 | * |
| 271 | * /* Create a destination */ |
| 272 | * cairo_tag_begin (cr, CAIRO_TAG_DEST, "name='mydest'"); |
| 273 | * cairo_move_to (cr, 50, 250); |
| 274 | * cairo_show_text (cr, "This paragraph is the destination of the above link."); |
| 275 | * cairo_tag_end (cr, CAIRO_TAG_DEST); |
| 276 | * </programlisting></informalexample> |
| 277 | * |
| 278 | * # Document Structure (PDF) # {#doc-struct} |
| 279 | * |
| 280 | * The document structure tags provide a means of specifying structural information |
| 281 | * such as headers, paragraphs, tables, and figures. The inclusion of structural information facilitates: |
| 282 | * * Extraction of text and graphics for copy and paste |
| 283 | * * Reflow of text and graphics in the viewer |
| 284 | * * Processing text eg searching and indexing |
| 285 | * * Conversion to other formats |
| 286 | * * Accessability support |
| 287 | * |
| 288 | * The list of structure types is specified in section 14.8.4 of the |
| 289 | * [PDF Reference](http://www.adobe.com/content/dam/Adobe/en/devnet/acrobat/pdfs/PDF32000_2008.pdf). |
| 290 | * |
| 291 | * Note the PDF "Link" structure tag is the same as the cairo %CAIRO_TAG_LINK tag. |
| 292 | * |
| 293 | * The following example creates a document structure for a document containing two section, each with |
| 294 | * a header and a paragraph. |
| 295 | * |
| 296 | * <informalexample><programlisting> |
| 297 | * cairo_tag_begin (cr, "Document", NULL); |
| 298 | * |
| 299 | * cairo_tag_begin (cr, "Sect", NULL); |
| 300 | * cairo_tag_begin (cr, "H1", NULL); |
| 301 | * cairo_show_text (cr, "Heading 1"); |
| 302 | * cairo_tag_end (cr, "H1"); |
| 303 | * |
| 304 | * cairo_tag_begin (cr, "P", NULL); |
| 305 | * cairo_show_text (cr, "Paragraph 1"); |
| 306 | * cairo_tag_end (cr, "P"); |
| 307 | * cairo_tag_end (cr, "Sect"); |
| 308 | * |
| 309 | * cairo_tag_begin (cr, "Sect", NULL); |
| 310 | * cairo_tag_begin (cr, "H1", NULL); |
| 311 | * cairo_show_text (cr, "Heading 2"); |
| 312 | * cairo_tag_end (cr, "H1"); |
| 313 | * |
| 314 | * cairo_tag_begin (cr, "P", NULL); |
| 315 | * cairo_show_text (cr, "Paragraph 2"); |
| 316 | * cairo_tag_end (cr, "P"); |
| 317 | * cairo_tag_end (cr, "Sect"); |
| 318 | * |
| 319 | * cairo_tag_end (cr, "Document"); |
| 320 | * </programlisting></informalexample> |
| 321 | * |
| 322 | **/ |
| 323 | |
| 324 | #define DEFINE_NIL_CONTEXT(status){ {((cairo_atomic_int_t) -1)}, status, { 0, 0, 0, ((void*)0) } , ((void*)0) } \ |
| 325 | { \ |
| 326 | CAIRO_REFERENCE_COUNT_INVALID{((cairo_atomic_int_t) -1)}, /* ref_count */ \ |
| 327 | status, /* status */ \ |
| 328 | { 0, 0, 0, NULL((void*)0) }, /* user_data */ \ |
| 329 | NULL((void*)0) \ |
| 330 | } |
| 331 | |
| 332 | static const cairo_t _cairo_nil[] = { |
| 333 | DEFINE_NIL_CONTEXT (CAIRO_STATUS_NO_MEMORY){ {((cairo_atomic_int_t) -1)}, CAIRO_STATUS_NO_MEMORY, { 0, 0 , 0, ((void*)0) }, ((void*)0) }, |
| 334 | DEFINE_NIL_CONTEXT (CAIRO_STATUS_INVALID_RESTORE){ {((cairo_atomic_int_t) -1)}, CAIRO_STATUS_INVALID_RESTORE, { 0, 0, 0, ((void*)0) }, ((void*)0) }, |
| 335 | DEFINE_NIL_CONTEXT (CAIRO_STATUS_INVALID_POP_GROUP){ {((cairo_atomic_int_t) -1)}, CAIRO_STATUS_INVALID_POP_GROUP , { 0, 0, 0, ((void*)0) }, ((void*)0) }, |
| 336 | DEFINE_NIL_CONTEXT (CAIRO_STATUS_NO_CURRENT_POINT){ {((cairo_atomic_int_t) -1)}, CAIRO_STATUS_NO_CURRENT_POINT, { 0, 0, 0, ((void*)0) }, ((void*)0) }, |
| 337 | DEFINE_NIL_CONTEXT (CAIRO_STATUS_INVALID_MATRIX){ {((cairo_atomic_int_t) -1)}, CAIRO_STATUS_INVALID_MATRIX, { 0, 0, 0, ((void*)0) }, ((void*)0) }, |
| 338 | DEFINE_NIL_CONTEXT (CAIRO_STATUS_INVALID_STATUS){ {((cairo_atomic_int_t) -1)}, CAIRO_STATUS_INVALID_STATUS, { 0, 0, 0, ((void*)0) }, ((void*)0) }, |
| 339 | DEFINE_NIL_CONTEXT (CAIRO_STATUS_NULL_POINTER){ {((cairo_atomic_int_t) -1)}, CAIRO_STATUS_NULL_POINTER, { 0 , 0, 0, ((void*)0) }, ((void*)0) }, |
| 340 | DEFINE_NIL_CONTEXT (CAIRO_STATUS_INVALID_STRING){ {((cairo_atomic_int_t) -1)}, CAIRO_STATUS_INVALID_STRING, { 0, 0, 0, ((void*)0) }, ((void*)0) }, |
| 341 | DEFINE_NIL_CONTEXT (CAIRO_STATUS_INVALID_PATH_DATA){ {((cairo_atomic_int_t) -1)}, CAIRO_STATUS_INVALID_PATH_DATA , { 0, 0, 0, ((void*)0) }, ((void*)0) }, |
| 342 | DEFINE_NIL_CONTEXT (CAIRO_STATUS_READ_ERROR){ {((cairo_atomic_int_t) -1)}, CAIRO_STATUS_READ_ERROR, { 0, 0 , 0, ((void*)0) }, ((void*)0) }, |
| 343 | DEFINE_NIL_CONTEXT (CAIRO_STATUS_WRITE_ERROR){ {((cairo_atomic_int_t) -1)}, CAIRO_STATUS_WRITE_ERROR, { 0, 0, 0, ((void*)0) }, ((void*)0) }, |
| 344 | DEFINE_NIL_CONTEXT (CAIRO_STATUS_SURFACE_FINISHED){ {((cairo_atomic_int_t) -1)}, CAIRO_STATUS_SURFACE_FINISHED, { 0, 0, 0, ((void*)0) }, ((void*)0) }, |
| 345 | DEFINE_NIL_CONTEXT (CAIRO_STATUS_SURFACE_TYPE_MISMATCH){ {((cairo_atomic_int_t) -1)}, CAIRO_STATUS_SURFACE_TYPE_MISMATCH , { 0, 0, 0, ((void*)0) }, ((void*)0) }, |
| 346 | DEFINE_NIL_CONTEXT (CAIRO_STATUS_PATTERN_TYPE_MISMATCH){ {((cairo_atomic_int_t) -1)}, CAIRO_STATUS_PATTERN_TYPE_MISMATCH , { 0, 0, 0, ((void*)0) }, ((void*)0) }, |
| 347 | DEFINE_NIL_CONTEXT (CAIRO_STATUS_INVALID_CONTENT){ {((cairo_atomic_int_t) -1)}, CAIRO_STATUS_INVALID_CONTENT, { 0, 0, 0, ((void*)0) }, ((void*)0) }, |
| 348 | DEFINE_NIL_CONTEXT (CAIRO_STATUS_INVALID_FORMAT){ {((cairo_atomic_int_t) -1)}, CAIRO_STATUS_INVALID_FORMAT, { 0, 0, 0, ((void*)0) }, ((void*)0) }, |
| 349 | DEFINE_NIL_CONTEXT (CAIRO_STATUS_INVALID_VISUAL){ {((cairo_atomic_int_t) -1)}, CAIRO_STATUS_INVALID_VISUAL, { 0, 0, 0, ((void*)0) }, ((void*)0) }, |
| 350 | DEFINE_NIL_CONTEXT (CAIRO_STATUS_FILE_NOT_FOUND){ {((cairo_atomic_int_t) -1)}, CAIRO_STATUS_FILE_NOT_FOUND, { 0, 0, 0, ((void*)0) }, ((void*)0) }, |
| 351 | DEFINE_NIL_CONTEXT (CAIRO_STATUS_INVALID_DASH){ {((cairo_atomic_int_t) -1)}, CAIRO_STATUS_INVALID_DASH, { 0 , 0, 0, ((void*)0) }, ((void*)0) }, |
| 352 | DEFINE_NIL_CONTEXT (CAIRO_STATUS_INVALID_DSC_COMMENT){ {((cairo_atomic_int_t) -1)}, CAIRO_STATUS_INVALID_DSC_COMMENT , { 0, 0, 0, ((void*)0) }, ((void*)0) }, |
| 353 | DEFINE_NIL_CONTEXT (CAIRO_STATUS_INVALID_INDEX){ {((cairo_atomic_int_t) -1)}, CAIRO_STATUS_INVALID_INDEX, { 0 , 0, 0, ((void*)0) }, ((void*)0) }, |
| 354 | DEFINE_NIL_CONTEXT (CAIRO_STATUS_CLIP_NOT_REPRESENTABLE){ {((cairo_atomic_int_t) -1)}, CAIRO_STATUS_CLIP_NOT_REPRESENTABLE , { 0, 0, 0, ((void*)0) }, ((void*)0) }, |
| 355 | DEFINE_NIL_CONTEXT (CAIRO_STATUS_TEMP_FILE_ERROR){ {((cairo_atomic_int_t) -1)}, CAIRO_STATUS_TEMP_FILE_ERROR, { 0, 0, 0, ((void*)0) }, ((void*)0) }, |
| 356 | DEFINE_NIL_CONTEXT (CAIRO_STATUS_INVALID_STRIDE){ {((cairo_atomic_int_t) -1)}, CAIRO_STATUS_INVALID_STRIDE, { 0, 0, 0, ((void*)0) }, ((void*)0) }, |
| 357 | DEFINE_NIL_CONTEXT (CAIRO_STATUS_FONT_TYPE_MISMATCH){ {((cairo_atomic_int_t) -1)}, CAIRO_STATUS_FONT_TYPE_MISMATCH , { 0, 0, 0, ((void*)0) }, ((void*)0) }, |
| 358 | DEFINE_NIL_CONTEXT (CAIRO_STATUS_USER_FONT_IMMUTABLE){ {((cairo_atomic_int_t) -1)}, CAIRO_STATUS_USER_FONT_IMMUTABLE , { 0, 0, 0, ((void*)0) }, ((void*)0) }, |
| 359 | DEFINE_NIL_CONTEXT (CAIRO_STATUS_USER_FONT_ERROR){ {((cairo_atomic_int_t) -1)}, CAIRO_STATUS_USER_FONT_ERROR, { 0, 0, 0, ((void*)0) }, ((void*)0) }, |
| 360 | DEFINE_NIL_CONTEXT (CAIRO_STATUS_NEGATIVE_COUNT){ {((cairo_atomic_int_t) -1)}, CAIRO_STATUS_NEGATIVE_COUNT, { 0, 0, 0, ((void*)0) }, ((void*)0) }, |
| 361 | DEFINE_NIL_CONTEXT (CAIRO_STATUS_INVALID_CLUSTERS){ {((cairo_atomic_int_t) -1)}, CAIRO_STATUS_INVALID_CLUSTERS, { 0, 0, 0, ((void*)0) }, ((void*)0) }, |
| 362 | DEFINE_NIL_CONTEXT (CAIRO_STATUS_INVALID_SLANT){ {((cairo_atomic_int_t) -1)}, CAIRO_STATUS_INVALID_SLANT, { 0 , 0, 0, ((void*)0) }, ((void*)0) }, |
| 363 | DEFINE_NIL_CONTEXT (CAIRO_STATUS_INVALID_WEIGHT){ {((cairo_atomic_int_t) -1)}, CAIRO_STATUS_INVALID_WEIGHT, { 0, 0, 0, ((void*)0) }, ((void*)0) }, |
| 364 | DEFINE_NIL_CONTEXT (CAIRO_STATUS_INVALID_SIZE){ {((cairo_atomic_int_t) -1)}, CAIRO_STATUS_INVALID_SIZE, { 0 , 0, 0, ((void*)0) }, ((void*)0) }, |
| 365 | DEFINE_NIL_CONTEXT (CAIRO_STATUS_USER_FONT_NOT_IMPLEMENTED){ {((cairo_atomic_int_t) -1)}, CAIRO_STATUS_USER_FONT_NOT_IMPLEMENTED , { 0, 0, 0, ((void*)0) }, ((void*)0) }, |
| 366 | DEFINE_NIL_CONTEXT (CAIRO_STATUS_DEVICE_TYPE_MISMATCH){ {((cairo_atomic_int_t) -1)}, CAIRO_STATUS_DEVICE_TYPE_MISMATCH , { 0, 0, 0, ((void*)0) }, ((void*)0) }, |
| 367 | DEFINE_NIL_CONTEXT (CAIRO_STATUS_DEVICE_ERROR){ {((cairo_atomic_int_t) -1)}, CAIRO_STATUS_DEVICE_ERROR, { 0 , 0, 0, ((void*)0) }, ((void*)0) }, |
| 368 | DEFINE_NIL_CONTEXT (CAIRO_STATUS_INVALID_MESH_CONSTRUCTION){ {((cairo_atomic_int_t) -1)}, CAIRO_STATUS_INVALID_MESH_CONSTRUCTION , { 0, 0, 0, ((void*)0) }, ((void*)0) }, |
| 369 | DEFINE_NIL_CONTEXT (CAIRO_STATUS_DEVICE_FINISHED){ {((cairo_atomic_int_t) -1)}, CAIRO_STATUS_DEVICE_FINISHED, { 0, 0, 0, ((void*)0) }, ((void*)0) }, |
| 370 | DEFINE_NIL_CONTEXT (CAIRO_STATUS_JBIG2_GLOBAL_MISSING){ {((cairo_atomic_int_t) -1)}, CAIRO_STATUS_JBIG2_GLOBAL_MISSING , { 0, 0, 0, ((void*)0) }, ((void*)0) }, |
| 371 | DEFINE_NIL_CONTEXT (CAIRO_STATUS_PNG_ERROR){ {((cairo_atomic_int_t) -1)}, CAIRO_STATUS_PNG_ERROR, { 0, 0 , 0, ((void*)0) }, ((void*)0) }, |
| 372 | DEFINE_NIL_CONTEXT (CAIRO_STATUS_FREETYPE_ERROR){ {((cairo_atomic_int_t) -1)}, CAIRO_STATUS_FREETYPE_ERROR, { 0, 0, 0, ((void*)0) }, ((void*)0) }, |
| 373 | DEFINE_NIL_CONTEXT (CAIRO_STATUS_WIN32_GDI_ERROR){ {((cairo_atomic_int_t) -1)}, CAIRO_STATUS_WIN32_GDI_ERROR, { 0, 0, 0, ((void*)0) }, ((void*)0) }, |
| 374 | DEFINE_NIL_CONTEXT (CAIRO_STATUS_TAG_ERROR){ {((cairo_atomic_int_t) -1)}, CAIRO_STATUS_TAG_ERROR, { 0, 0 , 0, ((void*)0) }, ((void*)0) }, |
| 375 | DEFINE_NIL_CONTEXT (CAIRO_STATUS_DWRITE_ERROR){ {((cairo_atomic_int_t) -1)}, CAIRO_STATUS_DWRITE_ERROR, { 0 , 0, 0, ((void*)0) }, ((void*)0) }, |
| 376 | DEFINE_NIL_CONTEXT (CAIRO_STATUS_SVG_FONT_ERROR){ {((cairo_atomic_int_t) -1)}, CAIRO_STATUS_SVG_FONT_ERROR, { 0, 0, 0, ((void*)0) }, ((void*)0) } |
| 377 | }; |
| 378 | COMPILE_TIME_ASSERT (ARRAY_LENGTH (_cairo_nil) == CAIRO_STATUS_LAST_STATUS - 1)typedef int compile_time_assertion_at_line_378_failed [(((int ) (sizeof (_cairo_nil) / sizeof (_cairo_nil[0]))) == CAIRO_STATUS_LAST_STATUS - 1)?1:-1]; |
| 379 | |
| 380 | /** |
| 381 | * _cairo_set_error: |
| 382 | * @cr: a cairo context |
| 383 | * @status: a status value indicating an error |
| 384 | * |
| 385 | * Atomically sets cr->status to @status and calls _cairo_error; |
| 386 | * Does nothing if status is %CAIRO_STATUS_SUCCESS. |
| 387 | * |
| 388 | * All assignments of an error status to cr->status should happen |
| 389 | * through _cairo_set_error(). Note that due to the nature of the atomic |
| 390 | * operation, it is not safe to call this function on the nil objects. |
| 391 | * |
| 392 | * The purpose of this function is to allow the user to set a |
| 393 | * breakpoint in _cairo_error() to generate a stack trace for when the |
| 394 | * user causes cairo to detect an error. |
| 395 | **/ |
| 396 | static void |
| 397 | _cairo_set_error (cairo_t *cr, cairo_status_t status) |
| 398 | { |
| 399 | /* Don't overwrite an existing error. This preserves the first |
| 400 | * error, which is the most significant. */ |
| 401 | _cairo_status_set_error (&cr->status, _cairo_error (status))do { int ret__; ((void) sizeof ((_cairo_error (status) < CAIRO_STATUS_LAST_STATUS ) ? 1 : 0), __extension__ ({ if (_cairo_error (status) < CAIRO_STATUS_LAST_STATUS ) ; else __assert_fail ("_cairo_error (status) < CAIRO_STATUS_LAST_STATUS" , "/root/firefox-clang/gfx/cairo/cairo/src/cairo.c", 401, __extension__ __PRETTY_FUNCTION__); })); ((void) sizeof ((sizeof(*&cr-> status) == sizeof(cairo_atomic_int_t)) ? 1 : 0), __extension__ ({ if (sizeof(*&cr->status) == sizeof(cairo_atomic_int_t )) ; else __assert_fail ("sizeof(*&cr->status) == sizeof(cairo_atomic_int_t)" , "/root/firefox-clang/gfx/cairo/cairo/src/cairo.c", 401, __extension__ __PRETTY_FUNCTION__); })); ret__ = _cairo_atomic_int_cmpxchg_impl ((cairo_atomic_int_t *) &cr->status, CAIRO_STATUS_SUCCESS , _cairo_error (status)); (void) ret__; } while (0); |
| 402 | } |
| 403 | |
| 404 | cairo_t * |
| 405 | _cairo_create_in_error (cairo_status_t status) |
| 406 | { |
| 407 | cairo_t *cr; |
| 408 | |
| 409 | assert (status != CAIRO_STATUS_SUCCESS)((void) sizeof ((status != CAIRO_STATUS_SUCCESS) ? 1 : 0), __extension__ ({ if (status != CAIRO_STATUS_SUCCESS) ; else __assert_fail ( "status != CAIRO_STATUS_SUCCESS", "/root/firefox-clang/gfx/cairo/cairo/src/cairo.c" , 409, __extension__ __PRETTY_FUNCTION__); })); |
| 410 | |
| 411 | cr = (cairo_t *) &_cairo_nil[status - CAIRO_STATUS_NO_MEMORY]; |
| 412 | assert (status == cr->status)((void) sizeof ((status == cr->status) ? 1 : 0), __extension__ ({ if (status == cr->status) ; else __assert_fail ("status == cr->status" , "/root/firefox-clang/gfx/cairo/cairo/src/cairo.c", 412, __extension__ __PRETTY_FUNCTION__); })); |
| 413 | |
| 414 | return cr; |
| 415 | } |
| 416 | |
| 417 | /** |
| 418 | * cairo_create: |
| 419 | * @target: target surface for the context |
| 420 | * |
| 421 | * Creates a new #cairo_t with all graphics state parameters set to |
| 422 | * default values and with @target as a target surface. The target |
| 423 | * surface should be constructed with a backend-specific function such |
| 424 | * as cairo_image_surface_create() (or any other |
| 425 | * <function>cairo_<emphasis>backend</emphasis>_surface_create(<!-- -->)</function> |
| 426 | * variant). |
| 427 | * |
| 428 | * This function references @target, so you can immediately |
| 429 | * call cairo_surface_destroy() on it if you don't need to |
| 430 | * maintain a separate reference to it. |
| 431 | * |
| 432 | * Return value: a newly allocated #cairo_t with a reference |
| 433 | * count of 1. The initial reference count should be released |
| 434 | * with cairo_destroy() when you are done using the #cairo_t. |
| 435 | * This function never returns %NULL. If memory cannot be |
| 436 | * allocated, a special #cairo_t object will be returned on |
| 437 | * which cairo_status() returns %CAIRO_STATUS_NO_MEMORY. If |
| 438 | * you attempt to target a surface which does not support |
| 439 | * writing (such as #cairo_mime_surface_t) then a |
| 440 | * %CAIRO_STATUS_WRITE_ERROR will be raised. You can use this |
| 441 | * object normally, but no drawing will be done. |
| 442 | * |
| 443 | * Since: 1.0 |
| 444 | **/ |
| 445 | cairo_t * |
| 446 | cairo_create_moz_cairo_create (cairo_surface_t *target) |
| 447 | { |
| 448 | if (unlikely (target == NULL)(__builtin_expect (!!(target == ((void*)0)), 0))) |
| 449 | return _cairo_create_in_error (_cairo_error (CAIRO_STATUS_NULL_POINTER)); |
| 450 | if (unlikely (target->status)(__builtin_expect (!!(target->status), 0))) |
| 451 | return _cairo_create_in_error (target->status); |
| 452 | if (unlikely (target->finished)(__builtin_expect (!!(target->finished), 0))) |
| 453 | return _cairo_create_in_error (_cairo_error (CAIRO_STATUS_SURFACE_FINISHED)); |
| 454 | |
| 455 | if (target->backend->create_context == NULL((void*)0)) |
| 456 | return _cairo_create_in_error (_cairo_error (CAIRO_STATUS_WRITE_ERROR)); |
| 457 | |
| 458 | return target->backend->create_context (target); |
| 459 | |
| 460 | } |
| 461 | |
| 462 | void |
| 463 | _cairo_init (cairo_t *cr, |
| 464 | const cairo_backend_t *backend) |
| 465 | { |
| 466 | CAIRO_REFERENCE_COUNT_INIT (&cr->ref_count, 1)((&cr->ref_count)->ref_count = (1)); |
| 467 | cr->status = CAIRO_STATUS_SUCCESS; |
| 468 | _cairo_user_data_array_init (&cr->user_data); |
| 469 | |
| 470 | cr->backend = backend; |
| 471 | } |
| 472 | |
| 473 | /** |
| 474 | * cairo_reference: |
| 475 | * @cr: a #cairo_t |
| 476 | * |
| 477 | * Increases the reference count on @cr by one. This prevents |
| 478 | * @cr from being destroyed until a matching call to cairo_destroy() |
| 479 | * is made. |
| 480 | * |
| 481 | * Use cairo_get_reference_count() to get the number of references to |
| 482 | * a #cairo_t. |
| 483 | * |
| 484 | * Return value: the referenced #cairo_t. |
| 485 | * |
| 486 | * Since: 1.0 |
| 487 | **/ |
| 488 | cairo_t * |
| 489 | cairo_reference_moz_cairo_reference (cairo_t *cr) |
| 490 | { |
| 491 | if (cr == NULL((void*)0) || CAIRO_REFERENCE_COUNT_IS_INVALID (&cr->ref_count)(_cairo_atomic_int_get (&(&cr->ref_count)->ref_count ) == ((cairo_atomic_int_t) -1))) |
| 492 | return cr; |
| 493 | |
| 494 | assert (CAIRO_REFERENCE_COUNT_HAS_REFERENCE (&cr->ref_count))((void) sizeof (((_cairo_atomic_int_get (&(&cr->ref_count )->ref_count) > 0)) ? 1 : 0), __extension__ ({ if ((_cairo_atomic_int_get (&(&cr->ref_count)->ref_count) > 0)) ; else __assert_fail ("CAIRO_REFERENCE_COUNT_HAS_REFERENCE (&cr->ref_count)" , "/root/firefox-clang/gfx/cairo/cairo/src/cairo.c", 494, __extension__ __PRETTY_FUNCTION__); })); |
| 495 | |
| 496 | _cairo_reference_count_inc (&cr->ref_count)((void) __atomic_fetch_add(&(&cr->ref_count)->ref_count , 1, 5)); |
| 497 | |
| 498 | return cr; |
| 499 | } |
| 500 | |
| 501 | void |
| 502 | _cairo_fini (cairo_t *cr) |
| 503 | { |
| 504 | _cairo_user_data_array_fini (&cr->user_data); |
| 505 | } |
| 506 | |
| 507 | /** |
| 508 | * cairo_destroy: |
| 509 | * @cr: a #cairo_t |
| 510 | * |
| 511 | * Decreases the reference count on @cr by one. If the result |
| 512 | * is zero, then @cr and all associated resources are freed. |
| 513 | * See cairo_reference(). |
| 514 | * |
| 515 | * Since: 1.0 |
| 516 | **/ |
| 517 | void |
| 518 | cairo_destroy_moz_cairo_destroy (cairo_t *cr) |
| 519 | { |
| 520 | if (cr == NULL((void*)0) || CAIRO_REFERENCE_COUNT_IS_INVALID (&cr->ref_count)(_cairo_atomic_int_get (&(&cr->ref_count)->ref_count ) == ((cairo_atomic_int_t) -1))) |
| 521 | return; |
| 522 | |
| 523 | assert (CAIRO_REFERENCE_COUNT_HAS_REFERENCE (&cr->ref_count))((void) sizeof (((_cairo_atomic_int_get (&(&cr->ref_count )->ref_count) > 0)) ? 1 : 0), __extension__ ({ if ((_cairo_atomic_int_get (&(&cr->ref_count)->ref_count) > 0)) ; else __assert_fail ("CAIRO_REFERENCE_COUNT_HAS_REFERENCE (&cr->ref_count)" , "/root/firefox-clang/gfx/cairo/cairo/src/cairo.c", 523, __extension__ __PRETTY_FUNCTION__); })); |
| 524 | |
| 525 | if (! _cairo_reference_count_dec_and_test (&cr->ref_count)(__atomic_fetch_sub(&(&cr->ref_count)->ref_count , 1, 5) == 1)) |
| 526 | return; |
| 527 | |
| 528 | cr->backend->destroy (cr); |
| 529 | } |
| 530 | |
| 531 | /** |
| 532 | * cairo_get_user_data: |
| 533 | * @cr: a #cairo_t |
| 534 | * @key: the address of the #cairo_user_data_key_t the user data was |
| 535 | * attached to |
| 536 | * |
| 537 | * Return user data previously attached to @cr using the specified |
| 538 | * key. If no user data has been attached with the given key this |
| 539 | * function returns %NULL. |
| 540 | * |
| 541 | * Return value: the user data previously attached or %NULL. |
| 542 | * |
| 543 | * Since: 1.4 |
| 544 | **/ |
| 545 | void * |
| 546 | cairo_get_user_data_moz_cairo_get_user_data (cairo_t *cr, |
| 547 | const cairo_user_data_key_t *key) |
| 548 | { |
| 549 | return _cairo_user_data_array_get_data (&cr->user_data, key); |
| 550 | } |
| 551 | |
| 552 | /** |
| 553 | * cairo_set_user_data: |
| 554 | * @cr: a #cairo_t |
| 555 | * @key: the address of a #cairo_user_data_key_t to attach the user data to |
| 556 | * @user_data: the user data to attach to the #cairo_t |
| 557 | * @destroy: a #cairo_destroy_func_t which will be called when the |
| 558 | * #cairo_t is destroyed or when new user data is attached using the |
| 559 | * same key. |
| 560 | * |
| 561 | * Attach user data to @cr. To remove user data from a surface, |
| 562 | * call this function with the key that was used to set it and %NULL |
| 563 | * for @data. |
| 564 | * |
| 565 | * Return value: %CAIRO_STATUS_SUCCESS or %CAIRO_STATUS_NO_MEMORY if a |
| 566 | * slot could not be allocated for the user data. |
| 567 | * |
| 568 | * Since: 1.4 |
| 569 | **/ |
| 570 | cairo_status_t |
| 571 | cairo_set_user_data_moz_cairo_set_user_data (cairo_t *cr, |
| 572 | const cairo_user_data_key_t *key, |
| 573 | void *user_data, |
| 574 | cairo_destroy_func_t destroy) |
| 575 | { |
| 576 | if (CAIRO_REFERENCE_COUNT_IS_INVALID (&cr->ref_count)(_cairo_atomic_int_get (&(&cr->ref_count)->ref_count ) == ((cairo_atomic_int_t) -1))) |
| 577 | return cr->status; |
| 578 | |
| 579 | return _cairo_user_data_array_set_data (&cr->user_data, |
| 580 | key, user_data, destroy); |
| 581 | } |
| 582 | |
| 583 | /** |
| 584 | * cairo_get_reference_count: |
| 585 | * @cr: a #cairo_t |
| 586 | * |
| 587 | * Returns the current reference count of @cr. |
| 588 | * |
| 589 | * Return value: the current reference count of @cr. If the |
| 590 | * object is a nil object, 0 will be returned. |
| 591 | * |
| 592 | * Since: 1.4 |
| 593 | **/ |
| 594 | unsigned int |
| 595 | cairo_get_reference_count_moz_cairo_get_reference_count (cairo_t *cr) |
| 596 | { |
| 597 | if (cr == NULL((void*)0) || CAIRO_REFERENCE_COUNT_IS_INVALID (&cr->ref_count)(_cairo_atomic_int_get (&(&cr->ref_count)->ref_count ) == ((cairo_atomic_int_t) -1))) |
| 598 | return 0; |
| 599 | |
| 600 | return CAIRO_REFERENCE_COUNT_GET_VALUE (&cr->ref_count)_cairo_atomic_int_get (&(&cr->ref_count)->ref_count ); |
| 601 | } |
| 602 | |
| 603 | /** |
| 604 | * cairo_save: |
| 605 | * @cr: a #cairo_t |
| 606 | * |
| 607 | * Makes a copy of the current state of @cr and saves it |
| 608 | * on an internal stack of saved states for @cr. When |
| 609 | * cairo_restore() is called, @cr will be restored to |
| 610 | * the saved state. Multiple calls to cairo_save() and |
| 611 | * cairo_restore() can be nested; each call to cairo_restore() |
| 612 | * restores the state from the matching paired cairo_save(). |
| 613 | * |
| 614 | * It isn't necessary to clear all saved states before |
| 615 | * a #cairo_t is freed. If the reference count of a #cairo_t |
| 616 | * drops to zero in response to a call to cairo_destroy(), |
| 617 | * any saved states will be freed along with the #cairo_t. |
| 618 | * |
| 619 | * Since: 1.0 |
| 620 | **/ |
| 621 | void |
| 622 | cairo_save_moz_cairo_save (cairo_t *cr) |
| 623 | { |
| 624 | cairo_status_t status; |
| 625 | |
| 626 | if (unlikely (cr->status)(__builtin_expect (!!(cr->status), 0))) |
| 627 | return; |
| 628 | |
| 629 | status = cr->backend->save (cr); |
| 630 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 631 | _cairo_set_error (cr, status); |
| 632 | } |
| 633 | |
| 634 | /** |
| 635 | * cairo_restore: |
| 636 | * @cr: a #cairo_t |
| 637 | * |
| 638 | * Restores @cr to the state saved by a preceding call to |
| 639 | * cairo_save() and removes that state from the stack of |
| 640 | * saved states. |
| 641 | * |
| 642 | * Since: 1.0 |
| 643 | **/ |
| 644 | void |
| 645 | cairo_restore_moz_cairo_restore (cairo_t *cr) |
| 646 | { |
| 647 | cairo_status_t status; |
| 648 | |
| 649 | if (unlikely (cr->status)(__builtin_expect (!!(cr->status), 0))) |
| 650 | return; |
| 651 | |
| 652 | status = cr->backend->restore (cr); |
| 653 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 654 | _cairo_set_error (cr, status); |
| 655 | } |
| 656 | |
| 657 | /** |
| 658 | * cairo_push_group: |
| 659 | * @cr: a cairo context |
| 660 | * |
| 661 | * Temporarily redirects drawing to an intermediate surface known as a |
| 662 | * group. The redirection lasts until the group is completed by a call |
| 663 | * to cairo_pop_group() or cairo_pop_group_to_source(). These calls |
| 664 | * provide the result of any drawing to the group as a pattern, |
| 665 | * (either as an explicit object, or set as the source pattern). |
| 666 | * |
| 667 | * This group functionality can be convenient for performing |
| 668 | * intermediate compositing. One common use of a group is to render |
| 669 | * objects as opaque within the group, (so that they occlude each |
| 670 | * other), and then blend the result with translucence onto the |
| 671 | * destination. |
| 672 | * |
| 673 | * Groups can be nested arbitrarily deep by making balanced calls to |
| 674 | * cairo_push_group()/cairo_pop_group(). Each call pushes/pops the new |
| 675 | * target group onto/from a stack. |
| 676 | * |
| 677 | * The cairo_push_group() function calls cairo_save() so that any |
| 678 | * changes to the graphics state will not be visible outside the |
| 679 | * group, (the pop_group functions call cairo_restore()). |
| 680 | * |
| 681 | * By default the intermediate group will have a content type of |
| 682 | * %CAIRO_CONTENT_COLOR_ALPHA. Other content types can be chosen for |
| 683 | * the group by using cairo_push_group_with_content() instead. |
| 684 | * |
| 685 | * As an example, here is how one might fill and stroke a path with |
| 686 | * translucence, but without any portion of the fill being visible |
| 687 | * under the stroke: |
| 688 | * |
| 689 | * <informalexample><programlisting> |
| 690 | * cairo_push_group (cr); |
| 691 | * cairo_set_source (cr, fill_pattern); |
| 692 | * cairo_fill_preserve (cr); |
| 693 | * cairo_set_source (cr, stroke_pattern); |
| 694 | * cairo_stroke (cr); |
| 695 | * cairo_pop_group_to_source (cr); |
| 696 | * cairo_paint_with_alpha (cr, alpha); |
| 697 | * </programlisting></informalexample> |
| 698 | * |
| 699 | * Since: 1.2 |
| 700 | **/ |
| 701 | void |
| 702 | cairo_push_group_moz_cairo_push_group (cairo_t *cr) |
| 703 | { |
| 704 | cairo_push_group_with_content_moz_cairo_push_group_with_content (cr, CAIRO_CONTENT_COLOR_ALPHA); |
| 705 | } |
| 706 | |
| 707 | /** |
| 708 | * cairo_push_group_with_content: |
| 709 | * @cr: a cairo context |
| 710 | * @content: a #cairo_content_t indicating the type of group that |
| 711 | * will be created |
| 712 | * |
| 713 | * Temporarily redirects drawing to an intermediate surface known as a |
| 714 | * group. The redirection lasts until the group is completed by a call |
| 715 | * to cairo_pop_group() or cairo_pop_group_to_source(). These calls |
| 716 | * provide the result of any drawing to the group as a pattern, |
| 717 | * (either as an explicit object, or set as the source pattern). |
| 718 | * |
| 719 | * The group will have a content type of @content. The ability to |
| 720 | * control this content type is the only distinction between this |
| 721 | * function and cairo_push_group() which you should see for a more |
| 722 | * detailed description of group rendering. |
| 723 | * |
| 724 | * Since: 1.2 |
| 725 | **/ |
| 726 | void |
| 727 | cairo_push_group_with_content_moz_cairo_push_group_with_content (cairo_t *cr, cairo_content_t content) |
| 728 | { |
| 729 | cairo_status_t status; |
| 730 | |
| 731 | if (unlikely (cr->status)(__builtin_expect (!!(cr->status), 0))) |
| 732 | return; |
| 733 | |
| 734 | status = cr->backend->push_group (cr, content); |
| 735 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 736 | _cairo_set_error (cr, status); |
| 737 | } |
| 738 | |
| 739 | /** |
| 740 | * cairo_pop_group: |
| 741 | * @cr: a cairo context |
| 742 | * |
| 743 | * Terminates the redirection begun by a call to cairo_push_group() or |
| 744 | * cairo_push_group_with_content() and returns a new pattern |
| 745 | * containing the results of all drawing operations performed to the |
| 746 | * group. |
| 747 | * |
| 748 | * The cairo_pop_group() function calls cairo_restore(), (balancing a |
| 749 | * call to cairo_save() by the push_group function), so that any |
| 750 | * changes to the graphics state will not be visible outside the |
| 751 | * group. |
| 752 | * |
| 753 | * Return value: a newly created (surface) pattern containing the |
| 754 | * results of all drawing operations performed to the group. The |
| 755 | * caller owns the returned object and should call |
| 756 | * cairo_pattern_destroy() when finished with it. |
| 757 | * |
| 758 | * Since: 1.2 |
| 759 | **/ |
| 760 | cairo_pattern_t * |
| 761 | cairo_pop_group_moz_cairo_pop_group (cairo_t *cr) |
| 762 | { |
| 763 | cairo_pattern_t *group_pattern; |
| 764 | |
| 765 | if (unlikely (cr->status)(__builtin_expect (!!(cr->status), 0))) |
| 766 | return _cairo_pattern_create_in_error (cr->status); |
| 767 | |
| 768 | group_pattern = cr->backend->pop_group (cr); |
| 769 | if (unlikely (group_pattern->status)(__builtin_expect (!!(group_pattern->status), 0))) |
| 770 | _cairo_set_error (cr, group_pattern->status); |
| 771 | |
| 772 | return group_pattern; |
| 773 | } |
| 774 | |
| 775 | /** |
| 776 | * cairo_pop_group_to_source: |
| 777 | * @cr: a cairo context |
| 778 | * |
| 779 | * Terminates the redirection begun by a call to cairo_push_group() or |
| 780 | * cairo_push_group_with_content() and installs the resulting pattern |
| 781 | * as the source pattern in the given cairo context. |
| 782 | * |
| 783 | * The behavior of this function is equivalent to the sequence of |
| 784 | * operations: |
| 785 | * |
| 786 | * <informalexample><programlisting> |
| 787 | * cairo_pattern_t *group = cairo_pop_group (cr); |
| 788 | * cairo_set_source (cr, group); |
| 789 | * cairo_pattern_destroy (group); |
| 790 | * </programlisting></informalexample> |
| 791 | * |
| 792 | * but is more convenient as their is no need for a variable to store |
| 793 | * the short-lived pointer to the pattern. |
| 794 | * |
| 795 | * The cairo_pop_group() function calls cairo_restore(), (balancing a |
| 796 | * call to cairo_save() by the push_group function), so that any |
| 797 | * changes to the graphics state will not be visible outside the |
| 798 | * group. |
| 799 | * |
| 800 | * Since: 1.2 |
| 801 | **/ |
| 802 | void |
| 803 | cairo_pop_group_to_source_moz_cairo_pop_group_to_source (cairo_t *cr) |
| 804 | { |
| 805 | cairo_pattern_t *group_pattern; |
| 806 | |
| 807 | group_pattern = cairo_pop_group_moz_cairo_pop_group (cr); |
| 808 | cairo_set_source_moz_cairo_set_source (cr, group_pattern); |
| 809 | cairo_pattern_destroy_moz_cairo_pattern_destroy (group_pattern); |
| 810 | } |
| 811 | |
| 812 | /** |
| 813 | * cairo_set_operator: |
| 814 | * @cr: a #cairo_t |
| 815 | * @op: a compositing operator, specified as a #cairo_operator_t |
| 816 | * |
| 817 | * Sets the compositing operator to be used for all drawing |
| 818 | * operations. See #cairo_operator_t for details on the semantics of |
| 819 | * each available compositing operator. |
| 820 | * |
| 821 | * The default operator is %CAIRO_OPERATOR_OVER. |
| 822 | * |
| 823 | * Since: 1.0 |
| 824 | **/ |
| 825 | void |
| 826 | cairo_set_operator_moz_cairo_set_operator (cairo_t *cr, cairo_operator_t op) |
| 827 | { |
| 828 | cairo_status_t status; |
| 829 | |
| 830 | if (unlikely (cr->status)(__builtin_expect (!!(cr->status), 0))) |
| 831 | return; |
| 832 | |
| 833 | status = cr->backend->set_operator (cr, op); |
| 834 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 835 | _cairo_set_error (cr, status); |
| 836 | } |
| 837 | |
| 838 | |
| 839 | #if 0 |
| 840 | /* |
| 841 | * cairo_set_opacity: |
| 842 | * @cr: a #cairo_t |
| 843 | * @opacity: the level of opacity to use when compositing |
| 844 | * |
| 845 | * Sets the compositing opacity to be used for all drawing |
| 846 | * operations. The effect is to fade out the operations |
| 847 | * using the alpha value. |
| 848 | * |
| 849 | * The default opacity is 1. |
| 850 | */ |
| 851 | void |
| 852 | cairo_set_opacity (cairo_t *cr, double opacity) |
| 853 | { |
| 854 | cairo_status_t status; |
| 855 | |
| 856 | if (unlikely (cr->status)(__builtin_expect (!!(cr->status), 0))) |
| 857 | return; |
| 858 | |
| 859 | status = cr->backend->set_opacity (cr, opacity); |
| 860 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 861 | _cairo_set_error (cr, status); |
| 862 | } |
| 863 | #endif |
| 864 | |
| 865 | /** |
| 866 | * cairo_set_source_rgb: |
| 867 | * @cr: a cairo context |
| 868 | * @red: red component of color |
| 869 | * @green: green component of color |
| 870 | * @blue: blue component of color |
| 871 | * |
| 872 | * Sets the source pattern within @cr to an opaque color. This opaque |
| 873 | * color will then be used for any subsequent drawing operation until |
| 874 | * a new source pattern is set. |
| 875 | * |
| 876 | * The color components are floating point numbers in the range 0 to |
| 877 | * 1. If the values passed in are outside that range, they will be |
| 878 | * clamped. |
| 879 | * |
| 880 | * The default source pattern is opaque black, (that is, it is |
| 881 | * equivalent to cairo_set_source_rgb(cr, 0.0, 0.0, 0.0)). |
| 882 | * |
| 883 | * Since: 1.0 |
| 884 | **/ |
| 885 | void |
| 886 | cairo_set_source_rgb_moz_cairo_set_source_rgb (cairo_t *cr, double red, double green, double blue) |
| 887 | { |
| 888 | cairo_status_t status; |
| 889 | |
| 890 | if (unlikely (cr->status)(__builtin_expect (!!(cr->status), 0))) |
| 891 | return; |
| 892 | |
| 893 | status = cr->backend->set_source_rgba (cr, red, green, blue, 1.); |
| 894 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 895 | _cairo_set_error (cr, status); |
| 896 | } |
| 897 | |
| 898 | /** |
| 899 | * cairo_set_source_rgba: |
| 900 | * @cr: a cairo context |
| 901 | * @red: red component of color |
| 902 | * @green: green component of color |
| 903 | * @blue: blue component of color |
| 904 | * @alpha: alpha component of color |
| 905 | * |
| 906 | * Sets the source pattern within @cr to a translucent color. This |
| 907 | * color will then be used for any subsequent drawing operation until |
| 908 | * a new source pattern is set. |
| 909 | * |
| 910 | * The color and alpha components are floating point numbers in the |
| 911 | * range 0 to 1. If the values passed in are outside that range, they |
| 912 | * will be clamped. |
| 913 | * |
| 914 | * Note that the color and alpha values are not premultiplied. |
| 915 | * |
| 916 | * The default source pattern is opaque black, (that is, it is |
| 917 | * equivalent to cairo_set_source_rgba(cr, 0.0, 0.0, 0.0, 1.0)). |
| 918 | * |
| 919 | * Since: 1.0 |
| 920 | **/ |
| 921 | void |
| 922 | cairo_set_source_rgba_moz_cairo_set_source_rgba (cairo_t *cr, |
| 923 | double red, double green, double blue, |
| 924 | double alpha) |
| 925 | { |
| 926 | cairo_status_t status; |
| 927 | |
| 928 | if (unlikely (cr->status)(__builtin_expect (!!(cr->status), 0))) |
| 929 | return; |
| 930 | |
| 931 | status = cr->backend->set_source_rgba (cr, red, green, blue, alpha); |
| 932 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 933 | _cairo_set_error (cr, status); |
| 934 | } |
| 935 | |
| 936 | /** |
| 937 | * cairo_set_source_surface: |
| 938 | * @cr: a cairo context |
| 939 | * @surface: a surface to be used to set the source pattern |
| 940 | * @x: User-space X coordinate for surface origin |
| 941 | * @y: User-space Y coordinate for surface origin |
| 942 | * |
| 943 | * This is a convenience function for creating a pattern from @surface |
| 944 | * and setting it as the source in @cr with cairo_set_source(). |
| 945 | * |
| 946 | * The @x and @y parameters give the user-space coordinate at which |
| 947 | * the surface origin should appear. (The surface origin is its |
| 948 | * upper-left corner before any transformation has been applied.) The |
| 949 | * @x and @y parameters are negated and then set as translation values |
| 950 | * in the pattern matrix. |
| 951 | * |
| 952 | * Other than the initial translation pattern matrix, as described |
| 953 | * above, all other pattern attributes, (such as its extend mode), are |
| 954 | * set to the default values as in cairo_pattern_create_for_surface(). |
| 955 | * The resulting pattern can be queried with cairo_get_source() so |
| 956 | * that these attributes can be modified if desired, (eg. to create a |
| 957 | * repeating pattern with cairo_pattern_set_extend()). |
| 958 | * |
| 959 | * Since: 1.0 |
| 960 | **/ |
| 961 | void |
| 962 | cairo_set_source_surface_moz_cairo_set_source_surface (cairo_t *cr, |
| 963 | cairo_surface_t *surface, |
| 964 | double x, |
| 965 | double y) |
| 966 | { |
| 967 | cairo_status_t status; |
| 968 | |
| 969 | if (unlikely (cr->status)(__builtin_expect (!!(cr->status), 0))) |
| 970 | return; |
| 971 | |
| 972 | if (unlikely (surface == NULL)(__builtin_expect (!!(surface == ((void*)0)), 0))) { |
| 973 | _cairo_set_error (cr, CAIRO_STATUS_NULL_POINTER); |
| 974 | return; |
| 975 | } |
| 976 | |
| 977 | status = cr->backend->set_source_surface (cr, surface, x, y); |
| 978 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 979 | _cairo_set_error (cr, status); |
| 980 | } |
| 981 | |
| 982 | /** |
| 983 | * cairo_set_source: |
| 984 | * @cr: a cairo context |
| 985 | * @source: a #cairo_pattern_t to be used as the source for |
| 986 | * subsequent drawing operations. |
| 987 | * |
| 988 | * Sets the source pattern within @cr to @source. This pattern |
| 989 | * will then be used for any subsequent drawing operation until a new |
| 990 | * source pattern is set. |
| 991 | * |
| 992 | * Note: The pattern's transformation matrix will be locked to the |
| 993 | * user space in effect at the time of cairo_set_source(). This means |
| 994 | * that further modifications of the current transformation matrix |
| 995 | * will not affect the source pattern. See cairo_pattern_set_matrix(). |
| 996 | * |
| 997 | * The default source pattern is a solid pattern that is opaque black, |
| 998 | * (that is, it is equivalent to cairo_set_source_rgb(cr, 0.0, 0.0, |
| 999 | * 0.0)). |
| 1000 | * |
| 1001 | * Since: 1.0 |
| 1002 | **/ |
| 1003 | void |
| 1004 | cairo_set_source_moz_cairo_set_source (cairo_t *cr, cairo_pattern_t *source) |
| 1005 | { |
| 1006 | cairo_status_t status; |
| 1007 | |
| 1008 | if (unlikely (cr->status)(__builtin_expect (!!(cr->status), 0))) |
| 1009 | return; |
| 1010 | |
| 1011 | if (unlikely (source == NULL)(__builtin_expect (!!(source == ((void*)0)), 0))) { |
| 1012 | _cairo_set_error (cr, CAIRO_STATUS_NULL_POINTER); |
| 1013 | return; |
| 1014 | } |
| 1015 | |
| 1016 | if (unlikely (source->status)(__builtin_expect (!!(source->status), 0))) { |
| 1017 | _cairo_set_error (cr, source->status); |
| 1018 | return; |
| 1019 | } |
| 1020 | |
| 1021 | status = cr->backend->set_source (cr, source); |
| 1022 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 1023 | _cairo_set_error (cr, status); |
| 1024 | } |
| 1025 | |
| 1026 | /** |
| 1027 | * cairo_get_source: |
| 1028 | * @cr: a cairo context |
| 1029 | * |
| 1030 | * Gets the current source pattern for @cr. |
| 1031 | * |
| 1032 | * Return value: the current source pattern. This object is owned by |
| 1033 | * cairo. To keep a reference to it, you must call |
| 1034 | * cairo_pattern_reference(). |
| 1035 | * |
| 1036 | * Since: 1.0 |
| 1037 | **/ |
| 1038 | cairo_pattern_t * |
| 1039 | cairo_get_source_moz_cairo_get_source (cairo_t *cr) |
| 1040 | { |
| 1041 | if (unlikely (cr->status)(__builtin_expect (!!(cr->status), 0))) |
| 1042 | return _cairo_pattern_create_in_error (cr->status); |
| 1043 | |
| 1044 | return cr->backend->get_source (cr); |
| 1045 | } |
| 1046 | |
| 1047 | /** |
| 1048 | * cairo_set_tolerance: |
| 1049 | * @cr: a #cairo_t |
| 1050 | * @tolerance: the tolerance, in device units (typically pixels) |
| 1051 | * |
| 1052 | * Sets the tolerance used when converting paths into trapezoids. |
| 1053 | * Curved segments of the path will be subdivided until the maximum |
| 1054 | * deviation between the original path and the polygonal approximation |
| 1055 | * is less than @tolerance. The default value is 0.1. A larger |
| 1056 | * value will give better performance, a smaller value, better |
| 1057 | * appearance. (Reducing the value from the default value of 0.1 |
| 1058 | * is unlikely to improve appearance significantly.) The accuracy of paths |
| 1059 | * within Cairo is limited by the precision of its internal arithmetic, and |
| 1060 | * the prescribed @tolerance is restricted to the smallest |
| 1061 | * representable internal value. |
| 1062 | * |
| 1063 | * Since: 1.0 |
| 1064 | **/ |
| 1065 | void |
| 1066 | cairo_set_tolerance_moz_cairo_set_tolerance (cairo_t *cr, double tolerance) |
| 1067 | { |
| 1068 | cairo_status_t status; |
| 1069 | |
| 1070 | if (unlikely (cr->status)(__builtin_expect (!!(cr->status), 0))) |
| 1071 | return; |
| 1072 | |
| 1073 | status = cr->backend->set_tolerance (cr, tolerance); |
| 1074 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 1075 | _cairo_set_error (cr, status); |
| 1076 | } |
| 1077 | |
| 1078 | /** |
| 1079 | * cairo_set_antialias: |
| 1080 | * @cr: a #cairo_t |
| 1081 | * @antialias: the new antialiasing mode |
| 1082 | * |
| 1083 | * Set the antialiasing mode of the rasterizer used for drawing shapes. |
| 1084 | * This value is a hint, and a particular backend may or may not support |
| 1085 | * a particular value. At the current time, no backend supports |
| 1086 | * %CAIRO_ANTIALIAS_SUBPIXEL when drawing shapes. |
| 1087 | * |
| 1088 | * Note that this option does not affect text rendering, instead see |
| 1089 | * cairo_font_options_set_antialias(). |
| 1090 | * |
| 1091 | * Since: 1.0 |
| 1092 | **/ |
| 1093 | void |
| 1094 | cairo_set_antialias_moz_cairo_set_antialias (cairo_t *cr, cairo_antialias_t antialias) |
| 1095 | { |
| 1096 | cairo_status_t status; |
| 1097 | |
| 1098 | if (unlikely (cr->status)(__builtin_expect (!!(cr->status), 0))) |
| 1099 | return; |
| 1100 | |
| 1101 | status = cr->backend->set_antialias (cr, antialias); |
| 1102 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 1103 | _cairo_set_error (cr, status); |
| 1104 | } |
| 1105 | |
| 1106 | /** |
| 1107 | * cairo_set_fill_rule: |
| 1108 | * @cr: a #cairo_t |
| 1109 | * @fill_rule: a fill rule, specified as a #cairo_fill_rule_t |
| 1110 | * |
| 1111 | * Set the current fill rule within the cairo context. The fill rule |
| 1112 | * is used to determine which regions are inside or outside a complex |
| 1113 | * (potentially self-intersecting) path. The current fill rule affects |
| 1114 | * both cairo_fill() and cairo_clip(). See #cairo_fill_rule_t for details |
| 1115 | * on the semantics of each available fill rule. |
| 1116 | * |
| 1117 | * The default fill rule is %CAIRO_FILL_RULE_WINDING. |
| 1118 | * |
| 1119 | * Since: 1.0 |
| 1120 | **/ |
| 1121 | void |
| 1122 | cairo_set_fill_rule_moz_cairo_set_fill_rule (cairo_t *cr, cairo_fill_rule_t fill_rule) |
| 1123 | { |
| 1124 | cairo_status_t status; |
| 1125 | |
| 1126 | if (unlikely (cr->status)(__builtin_expect (!!(cr->status), 0))) |
| 1127 | return; |
| 1128 | |
| 1129 | status = cr->backend->set_fill_rule (cr, fill_rule); |
| 1130 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 1131 | _cairo_set_error (cr, status); |
| 1132 | } |
| 1133 | |
| 1134 | /** |
| 1135 | * cairo_set_line_width: |
| 1136 | * @cr: a #cairo_t |
| 1137 | * @width: a line width |
| 1138 | * |
| 1139 | * Sets the current line width within the cairo context. The line |
| 1140 | * width value specifies the diameter of a pen that is circular in |
| 1141 | * user space, (though device-space pen may be an ellipse in general |
| 1142 | * due to scaling/shear/rotation of the CTM). |
| 1143 | * |
| 1144 | * Note: When the description above refers to user space and CTM it |
| 1145 | * refers to the user space and CTM in effect at the time of the |
| 1146 | * stroking operation, not the user space and CTM in effect at the |
| 1147 | * time of the call to cairo_set_line_width(). The simplest usage |
| 1148 | * makes both of these spaces identical. That is, if there is no |
| 1149 | * change to the CTM between a call to cairo_set_line_width() and the |
| 1150 | * stroking operation, then one can just pass user-space values to |
| 1151 | * cairo_set_line_width() and ignore this note. |
| 1152 | * |
| 1153 | * As with the other stroke parameters, the current line width is |
| 1154 | * examined by cairo_stroke(), and cairo_stroke_extents(), but does not have |
| 1155 | * any effect during path construction. |
| 1156 | * |
| 1157 | * The default line width value is 2.0. |
| 1158 | * |
| 1159 | * Since: 1.0 |
| 1160 | **/ |
| 1161 | void |
| 1162 | cairo_set_line_width_moz_cairo_set_line_width (cairo_t *cr, double width) |
| 1163 | { |
| 1164 | cairo_status_t status; |
| 1165 | |
| 1166 | if (unlikely (cr->status)(__builtin_expect (!!(cr->status), 0))) |
| 1167 | return; |
| 1168 | |
| 1169 | if (width < 0.) |
| 1170 | width = 0.; |
| 1171 | |
| 1172 | status = cr->backend->set_line_width (cr, width); |
| 1173 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 1174 | _cairo_set_error (cr, status); |
| 1175 | } |
| 1176 | |
| 1177 | /** |
| 1178 | * cairo_set_hairline: |
| 1179 | * @cr: a #cairo_t |
| 1180 | * @set_hairline: whether or not to set hairline mode |
| 1181 | * |
| 1182 | * Sets lines within the cairo context to be hairlines. |
| 1183 | * Hairlines are logically zero-width lines that are drawn at the |
| 1184 | * thinnest renderable width possible in the current context. |
| 1185 | * |
| 1186 | * On surfaces with native hairline support, the native hairline |
| 1187 | * functionality will be used. Surfaces that support hairlines include: |
| 1188 | * - pdf/ps: Encoded as 0-width line. |
| 1189 | * - win32_printing: Rendered with PS_COSMETIC pen. |
| 1190 | * - svg: Encoded as 1px non-scaling-stroke. |
| 1191 | * - script: Encoded with set-hairline function. |
| 1192 | * |
| 1193 | * Cairo will always render hairlines at 1 device unit wide, even if |
| 1194 | * an anisotropic scaling was applied to the stroke width. In the wild, |
| 1195 | * handling of this situation is not well-defined. Some PDF, PS, and SVG |
| 1196 | * renderers match Cairo's output, but some very popular implementations |
| 1197 | * (Acrobat, Chrome, rsvg) will scale the hairline unevenly. |
| 1198 | * As such, best practice is to reset any anisotropic scaling before calling |
| 1199 | * cairo_stroke(). See https://cairographics.org/cookbook/ellipses/ |
| 1200 | * for an example. |
| 1201 | * |
| 1202 | * Since: 1.18 |
| 1203 | **/ |
| 1204 | void |
| 1205 | cairo_set_hairline (cairo_t *cr, cairo_bool_t set_hairline) |
| 1206 | { |
| 1207 | cairo_status_t status; |
| 1208 | |
| 1209 | if (unlikely (cr->status)(__builtin_expect (!!(cr->status), 0))) |
| 1210 | return; |
| 1211 | |
| 1212 | status = cr->backend->set_hairline (cr, set_hairline); |
| 1213 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 1214 | _cairo_set_error (cr, status); |
| 1215 | } |
| 1216 | |
| 1217 | /** |
| 1218 | * cairo_set_line_cap: |
| 1219 | * @cr: a cairo context |
| 1220 | * @line_cap: a line cap style |
| 1221 | * |
| 1222 | * Sets the current line cap style within the cairo context. See |
| 1223 | * #cairo_line_cap_t for details about how the available line cap |
| 1224 | * styles are drawn. |
| 1225 | * |
| 1226 | * As with the other stroke parameters, the current line cap style is |
| 1227 | * examined by cairo_stroke(), and cairo_stroke_extents(), but does not have |
| 1228 | * any effect during path construction. |
| 1229 | * |
| 1230 | * The default line cap style is %CAIRO_LINE_CAP_BUTT. |
| 1231 | * |
| 1232 | * Since: 1.0 |
| 1233 | **/ |
| 1234 | void |
| 1235 | cairo_set_line_cap_moz_cairo_set_line_cap (cairo_t *cr, cairo_line_cap_t line_cap) |
| 1236 | { |
| 1237 | cairo_status_t status; |
| 1238 | |
| 1239 | if (unlikely (cr->status)(__builtin_expect (!!(cr->status), 0))) |
| 1240 | return; |
| 1241 | |
| 1242 | status = cr->backend->set_line_cap (cr, line_cap); |
| 1243 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 1244 | _cairo_set_error (cr, status); |
| 1245 | } |
| 1246 | |
| 1247 | /** |
| 1248 | * cairo_set_line_join: |
| 1249 | * @cr: a cairo context |
| 1250 | * @line_join: a line join style |
| 1251 | * |
| 1252 | * Sets the current line join style within the cairo context. See |
| 1253 | * #cairo_line_join_t for details about how the available line join |
| 1254 | * styles are drawn. |
| 1255 | * |
| 1256 | * As with the other stroke parameters, the current line join style is |
| 1257 | * examined by cairo_stroke(), and cairo_stroke_extents(), but does not have |
| 1258 | * any effect during path construction. |
| 1259 | * |
| 1260 | * The default line join style is %CAIRO_LINE_JOIN_MITER. |
| 1261 | * |
| 1262 | * Since: 1.0 |
| 1263 | **/ |
| 1264 | void |
| 1265 | cairo_set_line_join_moz_cairo_set_line_join (cairo_t *cr, cairo_line_join_t line_join) |
| 1266 | { |
| 1267 | cairo_status_t status; |
| 1268 | |
| 1269 | if (unlikely (cr->status)(__builtin_expect (!!(cr->status), 0))) |
| 1270 | return; |
| 1271 | |
| 1272 | status = cr->backend->set_line_join (cr, line_join); |
| 1273 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 1274 | _cairo_set_error (cr, status); |
| 1275 | } |
| 1276 | |
| 1277 | /** |
| 1278 | * cairo_set_dash: |
| 1279 | * @cr: a cairo context |
| 1280 | * @dashes: an array specifying alternate lengths of on and off stroke portions |
| 1281 | * @num_dashes: the length of the dashes array |
| 1282 | * @offset: an offset into the dash pattern at which the stroke should start |
| 1283 | * |
| 1284 | * Sets the dash pattern to be used by cairo_stroke(). A dash pattern |
| 1285 | * is specified by @dashes, an array of positive values. Each value |
| 1286 | * provides the length of alternate "on" and "off" portions of the |
| 1287 | * stroke. The @offset specifies an offset into the pattern at which |
| 1288 | * the stroke begins. |
| 1289 | * |
| 1290 | * Each "on" segment will have caps applied as if the segment were a |
| 1291 | * separate sub-path. In particular, it is valid to use an "on" length |
| 1292 | * of 0.0 with %CAIRO_LINE_CAP_ROUND or %CAIRO_LINE_CAP_SQUARE in order |
| 1293 | * to distributed dots or squares along a path. |
| 1294 | * |
| 1295 | * Note: The length values are in user-space units as evaluated at the |
| 1296 | * time of stroking. This is not necessarily the same as the user |
| 1297 | * space at the time of cairo_set_dash(). |
| 1298 | * |
| 1299 | * If @num_dashes is 0 dashing is disabled. |
| 1300 | * |
| 1301 | * If @num_dashes is 1 a symmetric pattern is assumed with alternating |
| 1302 | * on and off portions of the size specified by the single value in |
| 1303 | * @dashes. |
| 1304 | * |
| 1305 | * If any value in @dashes is negative, or if all values are 0, then |
| 1306 | * @cr will be put into an error state with a status of |
| 1307 | * %CAIRO_STATUS_INVALID_DASH. |
| 1308 | * |
| 1309 | * Since: 1.0 |
| 1310 | **/ |
| 1311 | void |
| 1312 | cairo_set_dash_moz_cairo_set_dash (cairo_t *cr, |
| 1313 | const double *dashes, |
| 1314 | int num_dashes, |
| 1315 | double offset) |
| 1316 | { |
| 1317 | cairo_status_t status; |
| 1318 | |
| 1319 | if (unlikely (cr->status)(__builtin_expect (!!(cr->status), 0))) |
| 1320 | return; |
| 1321 | |
| 1322 | status = cr->backend->set_dash (cr, dashes, num_dashes, offset); |
| 1323 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 1324 | _cairo_set_error (cr, status); |
| 1325 | } |
| 1326 | |
| 1327 | /** |
| 1328 | * cairo_get_dash_count: |
| 1329 | * @cr: a #cairo_t |
| 1330 | * |
| 1331 | * This function returns the length of the dash array in @cr (0 if dashing |
| 1332 | * is not currently in effect). |
| 1333 | * |
| 1334 | * See also cairo_set_dash() and cairo_get_dash(). |
| 1335 | * |
| 1336 | * Return value: the length of the dash array, or 0 if no dash array set. |
| 1337 | * |
| 1338 | * Since: 1.4 |
| 1339 | **/ |
| 1340 | int |
| 1341 | cairo_get_dash_count_moz_cairo_get_dash_count (cairo_t *cr) |
| 1342 | { |
| 1343 | int num_dashes; |
| 1344 | |
| 1345 | if (unlikely (cr->status)(__builtin_expect (!!(cr->status), 0))) |
| 1346 | return 0; |
| 1347 | |
| 1348 | cr->backend->get_dash (cr, NULL((void*)0), &num_dashes, NULL((void*)0)); |
| 1349 | |
| 1350 | return num_dashes; |
| 1351 | } |
| 1352 | |
| 1353 | /** |
| 1354 | * cairo_get_dash: |
| 1355 | * @cr: a #cairo_t |
| 1356 | * @dashes: return value for the dash array, or %NULL |
| 1357 | * @offset: return value for the current dash offset, or %NULL |
| 1358 | * |
| 1359 | * Gets the current dash array. If not %NULL, @dashes should be big |
| 1360 | * enough to hold at least the number of values returned by |
| 1361 | * cairo_get_dash_count(). |
| 1362 | * |
| 1363 | * Since: 1.4 |
| 1364 | **/ |
| 1365 | void |
| 1366 | cairo_get_dash_moz_cairo_get_dash (cairo_t *cr, |
| 1367 | double *dashes, |
| 1368 | double *offset) |
| 1369 | { |
| 1370 | if (unlikely (cr->status)(__builtin_expect (!!(cr->status), 0))) |
| 1371 | return; |
| 1372 | |
| 1373 | cr->backend->get_dash (cr, dashes, NULL((void*)0), offset); |
| 1374 | } |
| 1375 | |
| 1376 | /** |
| 1377 | * cairo_set_miter_limit: |
| 1378 | * @cr: a cairo context |
| 1379 | * @limit: miter limit to set |
| 1380 | * |
| 1381 | * Sets the current miter limit within the cairo context. |
| 1382 | * |
| 1383 | * If the current line join style is set to %CAIRO_LINE_JOIN_MITER |
| 1384 | * (see cairo_set_line_join()), the miter limit is used to determine |
| 1385 | * whether the lines should be joined with a bevel instead of a miter. |
| 1386 | * Cairo divides the length of the miter by the line width. |
| 1387 | * If the result is greater than the miter limit, the style is |
| 1388 | * converted to a bevel. |
| 1389 | * |
| 1390 | * As with the other stroke parameters, the current line miter limit is |
| 1391 | * examined by cairo_stroke(), and cairo_stroke_extents(), but does not have |
| 1392 | * any effect during path construction. |
| 1393 | * |
| 1394 | * The default miter limit value is 10.0, which will convert joins |
| 1395 | * with interior angles less than 11 degrees to bevels instead of |
| 1396 | * miters. For reference, a miter limit of 2.0 makes the miter cutoff |
| 1397 | * at 60 degrees, and a miter limit of 1.414 makes the cutoff at 90 |
| 1398 | * degrees. |
| 1399 | * |
| 1400 | * A miter limit for a desired angle can be computed as: miter limit = |
| 1401 | * 1/sin(angle/2) |
| 1402 | * |
| 1403 | * Since: 1.0 |
| 1404 | **/ |
| 1405 | void |
| 1406 | cairo_set_miter_limit_moz_cairo_set_miter_limit (cairo_t *cr, double limit) |
| 1407 | { |
| 1408 | cairo_status_t status; |
| 1409 | |
| 1410 | if (unlikely (cr->status)(__builtin_expect (!!(cr->status), 0))) |
| 1411 | return; |
| 1412 | |
| 1413 | status = cr->backend->set_miter_limit (cr, limit); |
| 1414 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 1415 | _cairo_set_error (cr, status); |
| 1416 | } |
| 1417 | |
| 1418 | /** |
| 1419 | * cairo_translate: |
| 1420 | * @cr: a cairo context |
| 1421 | * @tx: amount to translate in the X direction |
| 1422 | * @ty: amount to translate in the Y direction |
| 1423 | * |
| 1424 | * Modifies the current transformation matrix (CTM) by translating the |
| 1425 | * user-space origin by (@tx, @ty). This offset is interpreted as a |
| 1426 | * user-space coordinate according to the CTM in place before the new |
| 1427 | * call to cairo_translate(). In other words, the translation of the |
| 1428 | * user-space origin takes place after any existing transformation. |
| 1429 | * |
| 1430 | * Since: 1.0 |
| 1431 | **/ |
| 1432 | void |
| 1433 | cairo_translate_moz_cairo_translate (cairo_t *cr, double tx, double ty) |
| 1434 | { |
| 1435 | cairo_status_t status; |
| 1436 | |
| 1437 | if (unlikely (cr->status)(__builtin_expect (!!(cr->status), 0))) |
| 1438 | return; |
| 1439 | |
| 1440 | status = cr->backend->translate (cr, tx, ty); |
| 1441 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 1442 | _cairo_set_error (cr, status); |
| 1443 | } |
| 1444 | |
| 1445 | /** |
| 1446 | * cairo_scale: |
| 1447 | * @cr: a cairo context |
| 1448 | * @sx: scale factor for the X dimension |
| 1449 | * @sy: scale factor for the Y dimension |
| 1450 | * |
| 1451 | * Modifies the current transformation matrix (CTM) by scaling the X |
| 1452 | * and Y user-space axes by @sx and @sy respectively. The scaling of |
| 1453 | * the axes takes place after any existing transformation of user |
| 1454 | * space. |
| 1455 | * |
| 1456 | * Since: 1.0 |
| 1457 | **/ |
| 1458 | void |
| 1459 | cairo_scale_moz_cairo_scale (cairo_t *cr, double sx, double sy) |
| 1460 | { |
| 1461 | cairo_status_t status; |
| 1462 | |
| 1463 | if (unlikely (cr->status)(__builtin_expect (!!(cr->status), 0))) |
| 1464 | return; |
| 1465 | |
| 1466 | status = cr->backend->scale (cr, sx, sy); |
| 1467 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 1468 | _cairo_set_error (cr, status); |
| 1469 | } |
| 1470 | |
| 1471 | /** |
| 1472 | * cairo_rotate: |
| 1473 | * @cr: a cairo context |
| 1474 | * @angle: angle (in radians) by which the user-space axes will be |
| 1475 | * rotated |
| 1476 | * |
| 1477 | * Modifies the current transformation matrix (CTM) by rotating the |
| 1478 | * user-space axes by @angle radians. The rotation of the axes takes |
| 1479 | * places after any existing transformation of user space. The |
| 1480 | * rotation direction for positive angles is from the positive X axis |
| 1481 | * toward the positive Y axis. |
| 1482 | * |
| 1483 | * Since: 1.0 |
| 1484 | **/ |
| 1485 | void |
| 1486 | cairo_rotate_moz_cairo_rotate (cairo_t *cr, double angle) |
| 1487 | { |
| 1488 | cairo_status_t status; |
| 1489 | |
| 1490 | if (unlikely (cr->status)(__builtin_expect (!!(cr->status), 0))) |
| 1491 | return; |
| 1492 | |
| 1493 | status = cr->backend->rotate (cr, angle); |
| 1494 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 1495 | _cairo_set_error (cr, status); |
| 1496 | } |
| 1497 | |
| 1498 | /** |
| 1499 | * cairo_transform: |
| 1500 | * @cr: a cairo context |
| 1501 | * @matrix: a transformation to be applied to the user-space axes |
| 1502 | * |
| 1503 | * Modifies the current transformation matrix (CTM) by applying |
| 1504 | * @matrix as an additional transformation. The new transformation of |
| 1505 | * user space takes place after any existing transformation. |
| 1506 | * |
| 1507 | * Since: 1.0 |
| 1508 | **/ |
| 1509 | void |
| 1510 | cairo_transform_moz_cairo_transform (cairo_t *cr, |
| 1511 | const cairo_matrix_t *matrix) |
| 1512 | { |
| 1513 | cairo_status_t status; |
| 1514 | |
| 1515 | if (unlikely (cr->status)(__builtin_expect (!!(cr->status), 0))) |
| 1516 | return; |
| 1517 | |
| 1518 | status = cr->backend->transform (cr, matrix); |
| 1519 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 1520 | _cairo_set_error (cr, status); |
| 1521 | } |
| 1522 | |
| 1523 | /** |
| 1524 | * cairo_set_matrix: |
| 1525 | * @cr: a cairo context |
| 1526 | * @matrix: a transformation matrix from user space to device space |
| 1527 | * |
| 1528 | * Modifies the current transformation matrix (CTM) by setting it |
| 1529 | * equal to @matrix. |
| 1530 | * |
| 1531 | * Since: 1.0 |
| 1532 | **/ |
| 1533 | void |
| 1534 | cairo_set_matrix_moz_cairo_set_matrix (cairo_t *cr, |
| 1535 | const cairo_matrix_t *matrix) |
| 1536 | { |
| 1537 | cairo_status_t status; |
| 1538 | |
| 1539 | if (unlikely (cr->status)(__builtin_expect (!!(cr->status), 0))) |
| 1540 | return; |
| 1541 | |
| 1542 | status = cr->backend->set_matrix (cr, matrix); |
| 1543 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 1544 | _cairo_set_error (cr, status); |
| 1545 | } |
| 1546 | |
| 1547 | /** |
| 1548 | * cairo_identity_matrix: |
| 1549 | * @cr: a cairo context |
| 1550 | * |
| 1551 | * Resets the current transformation matrix (CTM) by setting it equal |
| 1552 | * to the identity matrix. That is, the user-space and device-space |
| 1553 | * axes will be aligned and one user-space unit will transform to one |
| 1554 | * device-space unit. |
| 1555 | * |
| 1556 | * Since: 1.0 |
| 1557 | **/ |
| 1558 | void |
| 1559 | cairo_identity_matrix_moz_cairo_identity_matrix (cairo_t *cr) |
| 1560 | { |
| 1561 | cairo_status_t status; |
| 1562 | |
| 1563 | if (unlikely (cr->status)(__builtin_expect (!!(cr->status), 0))) |
| 1564 | return; |
| 1565 | |
| 1566 | status = cr->backend->set_identity_matrix (cr); |
| 1567 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 1568 | _cairo_set_error (cr, status); |
| 1569 | } |
| 1570 | |
| 1571 | /** |
| 1572 | * cairo_user_to_device: |
| 1573 | * @cr: a cairo context |
| 1574 | * @x: X value of coordinate (in/out parameter) |
| 1575 | * @y: Y value of coordinate (in/out parameter) |
| 1576 | * |
| 1577 | * Transform a coordinate from user space to device space by |
| 1578 | * multiplying the given point by the current transformation matrix |
| 1579 | * (CTM). |
| 1580 | * |
| 1581 | * Since: 1.0 |
| 1582 | **/ |
| 1583 | void |
| 1584 | cairo_user_to_device_moz_cairo_user_to_device (cairo_t *cr, double *x, double *y) |
| 1585 | { |
| 1586 | if (unlikely (cr->status)(__builtin_expect (!!(cr->status), 0))) |
| 1587 | return; |
| 1588 | |
| 1589 | cr->backend->user_to_device (cr, x, y); |
| 1590 | } |
| 1591 | |
| 1592 | /** |
| 1593 | * cairo_user_to_device_distance: |
| 1594 | * @cr: a cairo context |
| 1595 | * @dx: X component of a distance vector (in/out parameter) |
| 1596 | * @dy: Y component of a distance vector (in/out parameter) |
| 1597 | * |
| 1598 | * Transform a distance vector from user space to device space. This |
| 1599 | * function is similar to cairo_user_to_device() except that the |
| 1600 | * translation components of the CTM will be ignored when transforming |
| 1601 | * (@dx,@dy). |
| 1602 | * |
| 1603 | * Since: 1.0 |
| 1604 | **/ |
| 1605 | void |
| 1606 | cairo_user_to_device_distance_moz_cairo_user_to_device_distance (cairo_t *cr, double *dx, double *dy) |
| 1607 | { |
| 1608 | if (unlikely (cr->status)(__builtin_expect (!!(cr->status), 0))) |
| 1609 | return; |
| 1610 | |
| 1611 | cr->backend->user_to_device_distance (cr, dx, dy); |
| 1612 | } |
| 1613 | |
| 1614 | /** |
| 1615 | * cairo_device_to_user: |
| 1616 | * @cr: a cairo |
| 1617 | * @x: X value of coordinate (in/out parameter) |
| 1618 | * @y: Y value of coordinate (in/out parameter) |
| 1619 | * |
| 1620 | * Transform a coordinate from device space to user space by |
| 1621 | * multiplying the given point by the inverse of the current |
| 1622 | * transformation matrix (CTM). |
| 1623 | * |
| 1624 | * Since: 1.0 |
| 1625 | **/ |
| 1626 | void |
| 1627 | cairo_device_to_user_moz_cairo_device_to_user (cairo_t *cr, double *x, double *y) |
| 1628 | { |
| 1629 | if (unlikely (cr->status)(__builtin_expect (!!(cr->status), 0))) |
| 1630 | return; |
| 1631 | |
| 1632 | cr->backend->device_to_user (cr, x, y); |
| 1633 | } |
| 1634 | |
| 1635 | /** |
| 1636 | * cairo_device_to_user_distance: |
| 1637 | * @cr: a cairo context |
| 1638 | * @dx: X component of a distance vector (in/out parameter) |
| 1639 | * @dy: Y component of a distance vector (in/out parameter) |
| 1640 | * |
| 1641 | * Transform a distance vector from device space to user space. This |
| 1642 | * function is similar to cairo_device_to_user() except that the |
| 1643 | * translation components of the inverse CTM will be ignored when |
| 1644 | * transforming (@dx,@dy). |
| 1645 | * |
| 1646 | * Since: 1.0 |
| 1647 | **/ |
| 1648 | void |
| 1649 | cairo_device_to_user_distance_moz_cairo_device_to_user_distance (cairo_t *cr, double *dx, double *dy) |
| 1650 | { |
| 1651 | if (unlikely (cr->status)(__builtin_expect (!!(cr->status), 0))) |
| 1652 | return; |
| 1653 | |
| 1654 | cr->backend->device_to_user_distance (cr, dx, dy); |
| 1655 | } |
| 1656 | |
| 1657 | /** |
| 1658 | * cairo_new_path: |
| 1659 | * @cr: a cairo context |
| 1660 | * |
| 1661 | * Clears the current path. After this call there will be no path and |
| 1662 | * no current point. |
| 1663 | * |
| 1664 | * Since: 1.0 |
| 1665 | **/ |
| 1666 | void |
| 1667 | cairo_new_path_moz_cairo_new_path (cairo_t *cr) |
| 1668 | { |
| 1669 | cairo_status_t status; |
| 1670 | |
| 1671 | if (unlikely (cr->status)(__builtin_expect (!!(cr->status), 0))) |
| 1672 | return; |
| 1673 | |
| 1674 | status = cr->backend->new_path (cr); |
| 1675 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 1676 | _cairo_set_error (cr, status); |
| 1677 | } |
| 1678 | |
| 1679 | /** |
| 1680 | * cairo_new_sub_path: |
| 1681 | * @cr: a cairo context |
| 1682 | * |
| 1683 | * Begin a new sub-path. Note that the existing path is not |
| 1684 | * affected. After this call there will be no current point. |
| 1685 | * |
| 1686 | * In many cases, this call is not needed since new sub-paths are |
| 1687 | * frequently started with cairo_move_to(). |
| 1688 | * |
| 1689 | * A call to cairo_new_sub_path() is particularly useful when |
| 1690 | * beginning a new sub-path with one of the cairo_arc() calls. This |
| 1691 | * makes things easier as it is no longer necessary to manually |
| 1692 | * compute the arc's initial coordinates for a call to |
| 1693 | * cairo_move_to(). |
| 1694 | * |
| 1695 | * Since: 1.2 |
| 1696 | **/ |
| 1697 | void |
| 1698 | cairo_new_sub_path_moz_cairo_new_sub_path (cairo_t *cr) |
| 1699 | { |
| 1700 | cairo_status_t status; |
| 1701 | |
| 1702 | if (unlikely (cr->status)(__builtin_expect (!!(cr->status), 0))) |
| 1703 | return; |
| 1704 | |
| 1705 | status = cr->backend->new_sub_path (cr); |
| 1706 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 1707 | _cairo_set_error (cr, status); |
| 1708 | } |
| 1709 | |
| 1710 | /** |
| 1711 | * cairo_move_to: |
| 1712 | * @cr: a cairo context |
| 1713 | * @x: the X coordinate of the new position |
| 1714 | * @y: the Y coordinate of the new position |
| 1715 | * |
| 1716 | * Begin a new sub-path. After this call the current point will be (@x, |
| 1717 | * @y). |
| 1718 | * |
| 1719 | * Since: 1.0 |
| 1720 | **/ |
| 1721 | void |
| 1722 | cairo_move_to_moz_cairo_move_to (cairo_t *cr, double x, double y) |
| 1723 | { |
| 1724 | cairo_status_t status; |
| 1725 | |
| 1726 | if (unlikely (cr->status)(__builtin_expect (!!(cr->status), 0))) |
| 1727 | return; |
| 1728 | |
| 1729 | status = cr->backend->move_to (cr, x, y); |
| 1730 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 1731 | _cairo_set_error (cr, status); |
| 1732 | } |
| 1733 | |
| 1734 | /** |
| 1735 | * cairo_line_to: |
| 1736 | * @cr: a cairo context |
| 1737 | * @x: the X coordinate of the end of the new line |
| 1738 | * @y: the Y coordinate of the end of the new line |
| 1739 | * |
| 1740 | * Adds a line to the path from the current point to position (@x, @y) |
| 1741 | * in user-space coordinates. After this call the current point |
| 1742 | * will be (@x, @y). |
| 1743 | * |
| 1744 | * If there is no current point before the call to cairo_line_to() |
| 1745 | * this function will behave as cairo_move_to(@cr, @x, @y). |
| 1746 | * |
| 1747 | * Since: 1.0 |
| 1748 | **/ |
| 1749 | void |
| 1750 | cairo_line_to_moz_cairo_line_to (cairo_t *cr, double x, double y) |
| 1751 | { |
| 1752 | cairo_status_t status; |
| 1753 | |
| 1754 | if (unlikely (cr->status)(__builtin_expect (!!(cr->status), 0))) |
| 1755 | return; |
| 1756 | |
| 1757 | status = cr->backend->line_to (cr, x, y); |
| 1758 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 1759 | _cairo_set_error (cr, status); |
| 1760 | } |
| 1761 | |
| 1762 | /** |
| 1763 | * cairo_curve_to: |
| 1764 | * @cr: a cairo context |
| 1765 | * @x1: the X coordinate of the first control point |
| 1766 | * @y1: the Y coordinate of the first control point |
| 1767 | * @x2: the X coordinate of the second control point |
| 1768 | * @y2: the Y coordinate of the second control point |
| 1769 | * @x3: the X coordinate of the end of the curve |
| 1770 | * @y3: the Y coordinate of the end of the curve |
| 1771 | * |
| 1772 | * Adds a cubic Bézier spline to the path from the current point to |
| 1773 | * position (@x3, @y3) in user-space coordinates, using (@x1, @y1) and |
| 1774 | * (@x2, @y2) as the control points. After this call the current point |
| 1775 | * will be (@x3, @y3). |
| 1776 | * |
| 1777 | * If there is no current point before the call to cairo_curve_to() |
| 1778 | * this function will behave as if preceded by a call to |
| 1779 | * cairo_move_to(@cr, @x1, @y1). |
| 1780 | * |
| 1781 | * Since: 1.0 |
| 1782 | **/ |
| 1783 | void |
| 1784 | cairo_curve_to_moz_cairo_curve_to (cairo_t *cr, |
| 1785 | double x1, double y1, |
| 1786 | double x2, double y2, |
| 1787 | double x3, double y3) |
| 1788 | { |
| 1789 | cairo_status_t status; |
| 1790 | |
| 1791 | if (unlikely (cr->status)(__builtin_expect (!!(cr->status), 0))) |
| 1792 | return; |
| 1793 | |
| 1794 | status = cr->backend->curve_to (cr, |
| 1795 | x1, y1, |
| 1796 | x2, y2, |
| 1797 | x3, y3); |
| 1798 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 1799 | _cairo_set_error (cr, status); |
| 1800 | } |
| 1801 | |
| 1802 | /** |
| 1803 | * cairo_arc: |
| 1804 | * @cr: a cairo context |
| 1805 | * @xc: X position of the center of the arc |
| 1806 | * @yc: Y position of the center of the arc |
| 1807 | * @radius: the radius of the arc |
| 1808 | * @angle1: the start angle, in radians |
| 1809 | * @angle2: the end angle, in radians |
| 1810 | * |
| 1811 | * Adds a circular arc of the given @radius to the current path. The |
| 1812 | * arc is centered at (@xc, @yc), begins at @angle1 and proceeds in |
| 1813 | * the direction of increasing angles to end at @angle2. If @angle2 is |
| 1814 | * less than @angle1 it will be progressively increased by |
| 1815 | * <literal>2*M_PI</literal> until it is greater than @angle1. |
| 1816 | * |
| 1817 | * If there is a current point, an initial line segment will be added |
| 1818 | * to the path to connect the current point to the beginning of the |
| 1819 | * arc. If this initial line is undesired, it can be avoided by |
| 1820 | * calling cairo_new_sub_path() before calling cairo_arc(). |
| 1821 | * |
| 1822 | * Angles are measured in radians. An angle of 0.0 is in the direction |
| 1823 | * of the positive X axis (in user space). An angle of |
| 1824 | * <literal>M_PI/2.0</literal> radians (90 degrees) is in the |
| 1825 | * direction of the positive Y axis (in user space). Angles increase |
| 1826 | * in the direction from the positive X axis toward the positive Y |
| 1827 | * axis. So with the default transformation matrix, angles increase in |
| 1828 | * a clockwise direction. |
| 1829 | * |
| 1830 | * (To convert from degrees to radians, use <literal>degrees * (M_PI / |
| 1831 | * 180.)</literal>.) |
| 1832 | * |
| 1833 | * This function gives the arc in the direction of increasing angles; |
| 1834 | * see cairo_arc_negative() to get the arc in the direction of |
| 1835 | * decreasing angles. |
| 1836 | * |
| 1837 | * The arc is circular in user space. To achieve an elliptical arc, |
| 1838 | * you can scale the current transformation matrix by different |
| 1839 | * amounts in the X and Y directions. For example, to draw an ellipse |
| 1840 | * in the box given by @x, @y, @width, @height: |
| 1841 | * |
| 1842 | * <informalexample><programlisting> |
| 1843 | * cairo_save (cr); |
| 1844 | * cairo_translate (cr, x + width / 2., y + height / 2.); |
| 1845 | * cairo_scale (cr, width / 2., height / 2.); |
| 1846 | * cairo_arc (cr, 0., 0., 1., 0., 2 * M_PI); |
| 1847 | * cairo_restore (cr); |
| 1848 | * </programlisting></informalexample> |
| 1849 | * |
| 1850 | * Since: 1.0 |
| 1851 | **/ |
| 1852 | void |
| 1853 | cairo_arc_moz_cairo_arc (cairo_t *cr, |
| 1854 | double xc, double yc, |
| 1855 | double radius, |
| 1856 | double angle1, double angle2) |
| 1857 | { |
| 1858 | cairo_status_t status; |
| 1859 | |
| 1860 | if (unlikely (cr->status)(__builtin_expect (!!(cr->status), 0))) |
| 1861 | return; |
| 1862 | |
| 1863 | if (angle2 < angle1) { |
| 1864 | /* increase angle2 by multiples of full circle until it |
| 1865 | * satisfies angle2 >= angle1 */ |
| 1866 | angle2 = fmod (angle2 - angle1, 2 * M_PI3.14159265358979323846); |
| 1867 | if (angle2 < 0) |
| 1868 | angle2 += 2 * M_PI3.14159265358979323846; |
| 1869 | angle2 += angle1; |
| 1870 | } |
| 1871 | |
| 1872 | status = cr->backend->arc (cr, xc, yc, radius, angle1, angle2, TRUE1); |
| 1873 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 1874 | _cairo_set_error (cr, status); |
| 1875 | } |
| 1876 | |
| 1877 | /** |
| 1878 | * cairo_arc_negative: |
| 1879 | * @cr: a cairo context |
| 1880 | * @xc: X position of the center of the arc |
| 1881 | * @yc: Y position of the center of the arc |
| 1882 | * @radius: the radius of the arc |
| 1883 | * @angle1: the start angle, in radians |
| 1884 | * @angle2: the end angle, in radians |
| 1885 | * |
| 1886 | * Adds a circular arc of the given @radius to the current path. The |
| 1887 | * arc is centered at (@xc, @yc), begins at @angle1 and proceeds in |
| 1888 | * the direction of decreasing angles to end at @angle2. If @angle2 is |
| 1889 | * greater than @angle1 it will be progressively decreased by |
| 1890 | * <literal>2*M_PI</literal> until it is less than @angle1. |
| 1891 | * |
| 1892 | * See cairo_arc() for more details. This function differs only in the |
| 1893 | * direction of the arc between the two angles. |
| 1894 | * |
| 1895 | * Since: 1.0 |
| 1896 | **/ |
| 1897 | void |
| 1898 | cairo_arc_negative_moz_cairo_arc_negative (cairo_t *cr, |
| 1899 | double xc, double yc, |
| 1900 | double radius, |
| 1901 | double angle1, double angle2) |
| 1902 | { |
| 1903 | cairo_status_t status; |
| 1904 | |
| 1905 | if (unlikely (cr->status)(__builtin_expect (!!(cr->status), 0))) |
| 1906 | return; |
| 1907 | |
| 1908 | if (angle2 > angle1) { |
| 1909 | /* decrease angle2 by multiples of full circle until it |
| 1910 | * satisfies angle2 <= angle1 */ |
| 1911 | angle2 = fmod (angle2 - angle1, 2 * M_PI3.14159265358979323846); |
| 1912 | if (angle2 > 0) |
| 1913 | angle2 -= 2 * M_PI3.14159265358979323846; |
| 1914 | angle2 += angle1; |
| 1915 | } |
| 1916 | |
| 1917 | status = cr->backend->arc (cr, xc, yc, radius, angle1, angle2, FALSE0); |
| 1918 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 1919 | _cairo_set_error (cr, status); |
| 1920 | } |
| 1921 | |
| 1922 | /* XXX: NYI |
| 1923 | void |
| 1924 | cairo_arc_to (cairo_t *cr, |
| 1925 | double x1, double y1, |
| 1926 | double x2, double y2, |
| 1927 | double radius) |
| 1928 | { |
| 1929 | cairo_status_t status; |
| 1930 | |
| 1931 | if (unlikely (cr->status)) |
| 1932 | return; |
| 1933 | |
| 1934 | status = cr->backend->arc_to (cr, x1, y1, x2, y2, radius); |
| 1935 | if (unlikely (status)) |
| 1936 | _cairo_set_error (cr, status); |
| 1937 | } |
| 1938 | |
| 1939 | void |
| 1940 | cairo_rel_arc_to (cairo_t *cr, |
| 1941 | double dx1, double dy1, |
| 1942 | double dx2, double dy2, |
| 1943 | double radius) |
| 1944 | { |
| 1945 | cairo_status_t status; |
| 1946 | |
| 1947 | if (unlikely (cr->status)) |
| 1948 | return; |
| 1949 | |
| 1950 | status = cr->backend->rel_arc_to (cr, dx1, dy1, dx2, dy2, radius); |
| 1951 | if (unlikely (status)) |
| 1952 | _cairo_set_error (cr, status); |
| 1953 | } |
| 1954 | */ |
| 1955 | |
| 1956 | /** |
| 1957 | * cairo_rel_move_to: |
| 1958 | * @cr: a cairo context |
| 1959 | * @dx: the X offset |
| 1960 | * @dy: the Y offset |
| 1961 | * |
| 1962 | * Begin a new sub-path. After this call the current point will offset |
| 1963 | * by (@x, @y). |
| 1964 | * |
| 1965 | * Given a current point of (x, y), cairo_rel_move_to(@cr, @dx, @dy) |
| 1966 | * is logically equivalent to cairo_move_to(@cr, x + @dx, y + @dy). |
| 1967 | * |
| 1968 | * It is an error to call this function with no current point. Doing |
| 1969 | * so will cause @cr to shutdown with a status of |
| 1970 | * %CAIRO_STATUS_NO_CURRENT_POINT. |
| 1971 | * |
| 1972 | * Since: 1.0 |
| 1973 | **/ |
| 1974 | void |
| 1975 | cairo_rel_move_to_moz_cairo_rel_move_to (cairo_t *cr, double dx, double dy) |
| 1976 | { |
| 1977 | cairo_status_t status; |
| 1978 | |
| 1979 | if (unlikely (cr->status)(__builtin_expect (!!(cr->status), 0))) |
| 1980 | return; |
| 1981 | |
| 1982 | status = cr->backend->rel_move_to (cr, dx, dy); |
| 1983 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 1984 | _cairo_set_error (cr, status); |
| 1985 | } |
| 1986 | |
| 1987 | /** |
| 1988 | * cairo_rel_line_to: |
| 1989 | * @cr: a cairo context |
| 1990 | * @dx: the X offset to the end of the new line |
| 1991 | * @dy: the Y offset to the end of the new line |
| 1992 | * |
| 1993 | * Relative-coordinate version of cairo_line_to(). Adds a line to the |
| 1994 | * path from the current point to a point that is offset from the |
| 1995 | * current point by (@dx, @dy) in user space. After this call the |
| 1996 | * current point will be offset by (@dx, @dy). |
| 1997 | * |
| 1998 | * Given a current point of (x, y), cairo_rel_line_to(@cr, @dx, @dy) |
| 1999 | * is logically equivalent to cairo_line_to(@cr, x + @dx, y + @dy). |
| 2000 | * |
| 2001 | * It is an error to call this function with no current point. Doing |
| 2002 | * so will cause @cr to shutdown with a status of |
| 2003 | * %CAIRO_STATUS_NO_CURRENT_POINT. |
| 2004 | * |
| 2005 | * Since: 1.0 |
| 2006 | **/ |
| 2007 | void |
| 2008 | cairo_rel_line_to_moz_cairo_rel_line_to (cairo_t *cr, double dx, double dy) |
| 2009 | { |
| 2010 | cairo_status_t status; |
| 2011 | |
| 2012 | if (unlikely (cr->status)(__builtin_expect (!!(cr->status), 0))) |
| 2013 | return; |
| 2014 | |
| 2015 | status = cr->backend->rel_line_to (cr, dx, dy); |
| 2016 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 2017 | _cairo_set_error (cr, status); |
| 2018 | } |
| 2019 | |
| 2020 | /** |
| 2021 | * cairo_rel_curve_to: |
| 2022 | * @cr: a cairo context |
| 2023 | * @dx1: the X offset to the first control point |
| 2024 | * @dy1: the Y offset to the first control point |
| 2025 | * @dx2: the X offset to the second control point |
| 2026 | * @dy2: the Y offset to the second control point |
| 2027 | * @dx3: the X offset to the end of the curve |
| 2028 | * @dy3: the Y offset to the end of the curve |
| 2029 | * |
| 2030 | * Relative-coordinate version of cairo_curve_to(). All offsets are |
| 2031 | * relative to the current point. Adds a cubic Bézier spline to the |
| 2032 | * path from the current point to a point offset from the current |
| 2033 | * point by (@dx3, @dy3), using points offset by (@dx1, @dy1) and |
| 2034 | * (@dx2, @dy2) as the control points. After this call the current |
| 2035 | * point will be offset by (@dx3, @dy3). |
| 2036 | * |
| 2037 | * Given a current point of (x, y), cairo_rel_curve_to(@cr, @dx1, |
| 2038 | * @dy1, @dx2, @dy2, @dx3, @dy3) is logically equivalent to |
| 2039 | * cairo_curve_to(@cr, x+@dx1, y+@dy1, x+@dx2, y+@dy2, x+@dx3, y+@dy3). |
| 2040 | * |
| 2041 | * It is an error to call this function with no current point. Doing |
| 2042 | * so will cause @cr to shutdown with a status of |
| 2043 | * %CAIRO_STATUS_NO_CURRENT_POINT. |
| 2044 | * |
| 2045 | * Since: 1.0 |
| 2046 | **/ |
| 2047 | void |
| 2048 | cairo_rel_curve_to_moz_cairo_rel_curve_to (cairo_t *cr, |
| 2049 | double dx1, double dy1, |
| 2050 | double dx2, double dy2, |
| 2051 | double dx3, double dy3) |
| 2052 | { |
| 2053 | cairo_status_t status; |
| 2054 | |
| 2055 | if (unlikely (cr->status)(__builtin_expect (!!(cr->status), 0))) |
| 2056 | return; |
| 2057 | |
| 2058 | status = cr->backend->rel_curve_to (cr, |
| 2059 | dx1, dy1, |
| 2060 | dx2, dy2, |
| 2061 | dx3, dy3); |
| 2062 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 2063 | _cairo_set_error (cr, status); |
| 2064 | } |
| 2065 | |
| 2066 | /** |
| 2067 | * cairo_rectangle: |
| 2068 | * @cr: a cairo context |
| 2069 | * @x: the X coordinate of the top left corner of the rectangle |
| 2070 | * @y: the Y coordinate to the top left corner of the rectangle |
| 2071 | * @width: the width of the rectangle |
| 2072 | * @height: the height of the rectangle |
| 2073 | * |
| 2074 | * Adds a closed sub-path rectangle of the given size to the current |
| 2075 | * path at position (@x, @y) in user-space coordinates. |
| 2076 | * |
| 2077 | * This function is logically equivalent to: |
| 2078 | * <informalexample><programlisting> |
| 2079 | * cairo_move_to (cr, x, y); |
| 2080 | * cairo_rel_line_to (cr, width, 0); |
| 2081 | * cairo_rel_line_to (cr, 0, height); |
| 2082 | * cairo_rel_line_to (cr, -width, 0); |
| 2083 | * cairo_close_path (cr); |
| 2084 | * </programlisting></informalexample> |
| 2085 | * |
| 2086 | * Since: 1.0 |
| 2087 | **/ |
| 2088 | void |
| 2089 | cairo_rectangle_moz_cairo_rectangle (cairo_t *cr, |
| 2090 | double x, double y, |
| 2091 | double width, double height) |
| 2092 | { |
| 2093 | cairo_status_t status; |
| 2094 | |
| 2095 | if (unlikely (cr->status)(__builtin_expect (!!(cr->status), 0))) |
| 2096 | return; |
| 2097 | |
| 2098 | status = cr->backend->rectangle (cr, x, y, width, height); |
| 2099 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 2100 | _cairo_set_error (cr, status); |
| 2101 | } |
| 2102 | |
| 2103 | #if 0 |
| 2104 | /* XXX: NYI */ |
| 2105 | void |
| 2106 | cairo_stroke_to_path_moz_cairo_stroke_to_path (cairo_t *cr) |
| 2107 | { |
| 2108 | cairo_status_t status; |
| 2109 | |
| 2110 | if (unlikely (cr->status)(__builtin_expect (!!(cr->status), 0))) |
| 2111 | return; |
| 2112 | |
| 2113 | /* The code in _cairo_recording_surface_get_path has a poorman's stroke_to_path */ |
| 2114 | |
| 2115 | status = _cairo_gstate_stroke_path (cr->gstate); |
| 2116 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 2117 | _cairo_set_error (cr, status); |
| 2118 | } |
| 2119 | #endif |
| 2120 | |
| 2121 | /** |
| 2122 | * cairo_close_path: |
| 2123 | * @cr: a cairo context |
| 2124 | * |
| 2125 | * Adds a line segment to the path from the current point to the |
| 2126 | * beginning of the current sub-path, (the most recent point passed to |
| 2127 | * cairo_move_to()), and closes this sub-path. After this call the |
| 2128 | * current point will be at the joined endpoint of the sub-path. |
| 2129 | * |
| 2130 | * The behavior of cairo_close_path() is distinct from simply calling |
| 2131 | * cairo_line_to() with the equivalent coordinate in the case of |
| 2132 | * stroking. When a closed sub-path is stroked, there are no caps on |
| 2133 | * the ends of the sub-path. Instead, there is a line join connecting |
| 2134 | * the final and initial segments of the sub-path. |
| 2135 | * |
| 2136 | * If there is no current point before the call to cairo_close_path(), |
| 2137 | * this function will have no effect. |
| 2138 | * |
| 2139 | * Note: As of cairo version 1.2.4 any call to cairo_close_path() will |
| 2140 | * place an explicit MOVE_TO element into the path immediately after |
| 2141 | * the CLOSE_PATH element, (which can be seen in cairo_copy_path() for |
| 2142 | * example). This can simplify path processing in some cases as it may |
| 2143 | * not be necessary to save the "last move_to point" during processing |
| 2144 | * as the MOVE_TO immediately after the CLOSE_PATH will provide that |
| 2145 | * point. |
| 2146 | * |
| 2147 | * Since: 1.0 |
| 2148 | **/ |
| 2149 | void |
| 2150 | cairo_close_path_moz_cairo_close_path (cairo_t *cr) |
| 2151 | { |
| 2152 | cairo_status_t status; |
| 2153 | |
| 2154 | if (unlikely (cr->status)(__builtin_expect (!!(cr->status), 0))) |
| 2155 | return; |
| 2156 | |
| 2157 | status = cr->backend->close_path (cr); |
| 2158 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 2159 | _cairo_set_error (cr, status); |
| 2160 | } |
| 2161 | |
| 2162 | /** |
| 2163 | * cairo_path_extents: |
| 2164 | * @cr: a cairo context |
| 2165 | * @x1: left of the resulting extents |
| 2166 | * @y1: top of the resulting extents |
| 2167 | * @x2: right of the resulting extents |
| 2168 | * @y2: bottom of the resulting extents |
| 2169 | * |
| 2170 | * Computes a bounding box in user-space coordinates covering the |
| 2171 | * points on the current path. If the current path is empty, returns |
| 2172 | * an empty rectangle ((0,0), (0,0)). Stroke parameters, fill rule, |
| 2173 | * surface dimensions and clipping are not taken into account. |
| 2174 | * |
| 2175 | * Contrast with cairo_fill_extents() and cairo_stroke_extents() which |
| 2176 | * return the extents of only the area that would be "inked" by |
| 2177 | * the corresponding drawing operations. |
| 2178 | * |
| 2179 | * The result of cairo_path_extents() is defined as equivalent to the |
| 2180 | * limit of cairo_stroke_extents() with %CAIRO_LINE_CAP_ROUND as the |
| 2181 | * line width approaches 0.0, (but never reaching the empty-rectangle |
| 2182 | * returned by cairo_stroke_extents() for a line width of 0.0). |
| 2183 | * |
| 2184 | * Specifically, this means that zero-area sub-paths such as |
| 2185 | * cairo_move_to();cairo_line_to() segments, (even degenerate cases |
| 2186 | * where the coordinates to both calls are identical), will be |
| 2187 | * considered as contributing to the extents. However, a lone |
| 2188 | * cairo_move_to() will not contribute to the results of |
| 2189 | * cairo_path_extents(). |
| 2190 | * |
| 2191 | * Since: 1.6 |
| 2192 | **/ |
| 2193 | void |
| 2194 | cairo_path_extents_moz_cairo_path_extents (cairo_t *cr, |
| 2195 | double *x1, double *y1, double *x2, double *y2) |
| 2196 | { |
| 2197 | if (unlikely (cr->status)(__builtin_expect (!!(cr->status), 0))) { |
| 2198 | if (x1) |
| 2199 | *x1 = 0.0; |
| 2200 | if (y1) |
| 2201 | *y1 = 0.0; |
| 2202 | if (x2) |
| 2203 | *x2 = 0.0; |
| 2204 | if (y2) |
| 2205 | *y2 = 0.0; |
| 2206 | |
| 2207 | return; |
| 2208 | } |
| 2209 | |
| 2210 | cr->backend->path_extents (cr, x1, y1, x2, y2); |
| 2211 | } |
| 2212 | |
| 2213 | /** |
| 2214 | * cairo_paint: |
| 2215 | * @cr: a cairo context |
| 2216 | * |
| 2217 | * A drawing operator that paints the current source everywhere within |
| 2218 | * the current clip region. |
| 2219 | * |
| 2220 | * Since: 1.0 |
| 2221 | **/ |
| 2222 | void |
| 2223 | cairo_paint_moz_cairo_paint (cairo_t *cr) |
| 2224 | { |
| 2225 | cairo_status_t status; |
| 2226 | |
| 2227 | if (unlikely (cr->status)(__builtin_expect (!!(cr->status), 0))) |
| 2228 | return; |
| 2229 | |
| 2230 | status = cr->backend->paint (cr); |
| 2231 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 2232 | _cairo_set_error (cr, status); |
| 2233 | } |
| 2234 | |
| 2235 | /** |
| 2236 | * cairo_paint_with_alpha: |
| 2237 | * @cr: a cairo context |
| 2238 | * @alpha: alpha value, between 0 (transparent) and 1 (opaque) |
| 2239 | * |
| 2240 | * A drawing operator that paints the current source everywhere within |
| 2241 | * the current clip region using a mask of constant alpha value |
| 2242 | * @alpha. The effect is similar to cairo_paint(), but the drawing |
| 2243 | * is faded out using the alpha value. |
| 2244 | * |
| 2245 | * Since: 1.0 |
| 2246 | **/ |
| 2247 | void |
| 2248 | cairo_paint_with_alpha_moz_cairo_paint_with_alpha (cairo_t *cr, |
| 2249 | double alpha) |
| 2250 | { |
| 2251 | cairo_status_t status; |
| 2252 | |
| 2253 | if (unlikely (cr->status)(__builtin_expect (!!(cr->status), 0))) |
| 2254 | return; |
| 2255 | |
| 2256 | status = cr->backend->paint_with_alpha (cr, alpha); |
| 2257 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 2258 | _cairo_set_error (cr, status); |
| 2259 | } |
| 2260 | |
| 2261 | /** |
| 2262 | * cairo_mask: |
| 2263 | * @cr: a cairo context |
| 2264 | * @pattern: a #cairo_pattern_t |
| 2265 | * |
| 2266 | * A drawing operator that paints the current source |
| 2267 | * using the alpha channel of @pattern as a mask. (Opaque |
| 2268 | * areas of @pattern are painted with the source, transparent |
| 2269 | * areas are not painted.) |
| 2270 | * |
| 2271 | * Since: 1.0 |
| 2272 | **/ |
| 2273 | void |
| 2274 | cairo_mask_moz_cairo_mask (cairo_t *cr, |
| 2275 | cairo_pattern_t *pattern) |
| 2276 | { |
| 2277 | cairo_status_t status; |
| 2278 | |
| 2279 | if (unlikely (cr->status)(__builtin_expect (!!(cr->status), 0))) |
| 2280 | return; |
| 2281 | |
| 2282 | if (unlikely (pattern == NULL)(__builtin_expect (!!(pattern == ((void*)0)), 0))) { |
| 2283 | _cairo_set_error (cr, CAIRO_STATUS_NULL_POINTER); |
| 2284 | return; |
| 2285 | } |
| 2286 | |
| 2287 | if (unlikely (pattern->status)(__builtin_expect (!!(pattern->status), 0))) { |
| 2288 | _cairo_set_error (cr, pattern->status); |
| 2289 | return; |
| 2290 | } |
| 2291 | |
| 2292 | status = cr->backend->mask (cr, pattern); |
| 2293 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 2294 | _cairo_set_error (cr, status); |
| 2295 | } |
| 2296 | |
| 2297 | /** |
| 2298 | * cairo_mask_surface: |
| 2299 | * @cr: a cairo context |
| 2300 | * @surface: a #cairo_surface_t |
| 2301 | * @surface_x: X coordinate at which to place the origin of @surface |
| 2302 | * @surface_y: Y coordinate at which to place the origin of @surface |
| 2303 | * |
| 2304 | * A drawing operator that paints the current source |
| 2305 | * using the alpha channel of @surface as a mask. (Opaque |
| 2306 | * areas of @surface are painted with the source, transparent |
| 2307 | * areas are not painted.) |
| 2308 | * |
| 2309 | * Since: 1.0 |
| 2310 | **/ |
| 2311 | void |
| 2312 | cairo_mask_surface_moz_cairo_mask_surface (cairo_t *cr, |
| 2313 | cairo_surface_t *surface, |
| 2314 | double surface_x, |
| 2315 | double surface_y) |
| 2316 | { |
| 2317 | cairo_pattern_t *pattern; |
| 2318 | cairo_matrix_t matrix; |
| 2319 | |
| 2320 | if (unlikely (cr->status)(__builtin_expect (!!(cr->status), 0))) |
| 2321 | return; |
| 2322 | |
| 2323 | pattern = cairo_pattern_create_for_surface_moz_cairo_pattern_create_for_surface (surface); |
| 2324 | |
| 2325 | cairo_matrix_init_translate_moz_cairo_matrix_init_translate (&matrix, - surface_x, - surface_y); |
| 2326 | cairo_pattern_set_matrix_moz_cairo_pattern_set_matrix (pattern, &matrix); |
| 2327 | |
| 2328 | cairo_mask_moz_cairo_mask (cr, pattern); |
| 2329 | |
| 2330 | cairo_pattern_destroy_moz_cairo_pattern_destroy (pattern); |
| 2331 | } |
| 2332 | |
| 2333 | /** |
| 2334 | * cairo_stroke: |
| 2335 | * @cr: a cairo context |
| 2336 | * |
| 2337 | * A drawing operator that strokes the current path according to the |
| 2338 | * current line width, line join, line cap, and dash settings. After |
| 2339 | * cairo_stroke(), the current path will be cleared from the cairo |
| 2340 | * context. See cairo_set_line_width(), cairo_set_line_join(), |
| 2341 | * cairo_set_line_cap(), cairo_set_dash(), and |
| 2342 | * cairo_stroke_preserve(). |
| 2343 | * |
| 2344 | * Note: Degenerate segments and sub-paths are treated specially and |
| 2345 | * provide a useful result. These can result in two different |
| 2346 | * situations: |
| 2347 | * |
| 2348 | * 1. Zero-length "on" segments set in cairo_set_dash(). If the cap |
| 2349 | * style is %CAIRO_LINE_CAP_ROUND or %CAIRO_LINE_CAP_SQUARE then these |
| 2350 | * segments will be drawn as circular dots or squares respectively. In |
| 2351 | * the case of %CAIRO_LINE_CAP_SQUARE, the orientation of the squares |
| 2352 | * is determined by the direction of the underlying path. |
| 2353 | * |
| 2354 | * 2. A sub-path created by cairo_move_to() followed by either a |
| 2355 | * cairo_close_path() or one or more calls to cairo_line_to() to the |
| 2356 | * same coordinate as the cairo_move_to(). If the cap style is |
| 2357 | * %CAIRO_LINE_CAP_ROUND then these sub-paths will be drawn as circular |
| 2358 | * dots. Note that in the case of %CAIRO_LINE_CAP_SQUARE a degenerate |
| 2359 | * sub-path will not be drawn at all, (since the correct orientation |
| 2360 | * is indeterminate). |
| 2361 | * |
| 2362 | * In no case will a cap style of %CAIRO_LINE_CAP_BUTT cause anything |
| 2363 | * to be drawn in the case of either degenerate segments or sub-paths. |
| 2364 | * |
| 2365 | * Since: 1.0 |
| 2366 | **/ |
| 2367 | void |
| 2368 | cairo_stroke_moz_cairo_stroke (cairo_t *cr) |
| 2369 | { |
| 2370 | cairo_status_t status; |
| 2371 | |
| 2372 | if (unlikely (cr->status)(__builtin_expect (!!(cr->status), 0))) |
| 2373 | return; |
| 2374 | |
| 2375 | status = cr->backend->stroke (cr); |
| 2376 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 2377 | _cairo_set_error (cr, status); |
| 2378 | } |
| 2379 | |
| 2380 | /** |
| 2381 | * cairo_stroke_preserve: |
| 2382 | * @cr: a cairo context |
| 2383 | * |
| 2384 | * A drawing operator that strokes the current path according to the |
| 2385 | * current line width, line join, line cap, and dash settings. Unlike |
| 2386 | * cairo_stroke(), cairo_stroke_preserve() preserves the path within the |
| 2387 | * cairo context. |
| 2388 | * |
| 2389 | * See cairo_set_line_width(), cairo_set_line_join(), |
| 2390 | * cairo_set_line_cap(), cairo_set_dash(), and |
| 2391 | * cairo_stroke_preserve(). |
| 2392 | * |
| 2393 | * Since: 1.0 |
| 2394 | **/ |
| 2395 | void |
| 2396 | cairo_stroke_preserve_moz_cairo_stroke_preserve (cairo_t *cr) |
| 2397 | { |
| 2398 | cairo_status_t status; |
| 2399 | |
| 2400 | if (unlikely (cr->status)(__builtin_expect (!!(cr->status), 0))) |
| 2401 | return; |
| 2402 | |
| 2403 | status = cr->backend->stroke_preserve (cr); |
| 2404 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 2405 | _cairo_set_error (cr, status); |
| 2406 | } |
| 2407 | |
| 2408 | /** |
| 2409 | * cairo_fill: |
| 2410 | * @cr: a cairo context |
| 2411 | * |
| 2412 | * A drawing operator that fills the current path according to the |
| 2413 | * current fill rule, (each sub-path is implicitly closed before being |
| 2414 | * filled). After cairo_fill(), the current path will be cleared from |
| 2415 | * the cairo context. See cairo_set_fill_rule() and |
| 2416 | * cairo_fill_preserve(). |
| 2417 | * |
| 2418 | * Since: 1.0 |
| 2419 | **/ |
| 2420 | void |
| 2421 | cairo_fill_moz_cairo_fill (cairo_t *cr) |
| 2422 | { |
| 2423 | cairo_status_t status; |
| 2424 | |
| 2425 | if (unlikely (cr->status)(__builtin_expect (!!(cr->status), 0))) |
| 2426 | return; |
| 2427 | |
| 2428 | status = cr->backend->fill (cr); |
| 2429 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 2430 | _cairo_set_error (cr, status); |
| 2431 | } |
| 2432 | |
| 2433 | /** |
| 2434 | * cairo_fill_preserve: |
| 2435 | * @cr: a cairo context |
| 2436 | * |
| 2437 | * A drawing operator that fills the current path according to the |
| 2438 | * current fill rule, (each sub-path is implicitly closed before being |
| 2439 | * filled). Unlike cairo_fill(), cairo_fill_preserve() preserves the |
| 2440 | * path within the cairo context. |
| 2441 | * |
| 2442 | * See cairo_set_fill_rule() and cairo_fill(). |
| 2443 | * |
| 2444 | * Since: 1.0 |
| 2445 | **/ |
| 2446 | void |
| 2447 | cairo_fill_preserve_moz_cairo_fill_preserve (cairo_t *cr) |
| 2448 | { |
| 2449 | cairo_status_t status; |
| 2450 | |
| 2451 | if (unlikely (cr->status)(__builtin_expect (!!(cr->status), 0))) |
| 2452 | return; |
| 2453 | |
| 2454 | status = cr->backend->fill_preserve (cr); |
| 2455 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 2456 | _cairo_set_error (cr, status); |
| 2457 | } |
| 2458 | |
| 2459 | /** |
| 2460 | * cairo_copy_page: |
| 2461 | * @cr: a cairo context |
| 2462 | * |
| 2463 | * Emits the current page for backends that support multiple pages, but |
| 2464 | * doesn't clear it, so, the contents of the current page will be retained |
| 2465 | * for the next page too. Use cairo_show_page() if you want to get an |
| 2466 | * empty page after the emission. |
| 2467 | * |
| 2468 | * This is a convenience function that simply calls |
| 2469 | * cairo_surface_copy_page() on @cr's target. |
| 2470 | * |
| 2471 | * Since: 1.0 |
| 2472 | **/ |
| 2473 | void |
| 2474 | cairo_copy_page_moz_cairo_copy_page (cairo_t *cr) |
| 2475 | { |
| 2476 | cairo_status_t status; |
| 2477 | |
| 2478 | if (unlikely (cr->status)(__builtin_expect (!!(cr->status), 0))) |
| 2479 | return; |
| 2480 | |
| 2481 | status = cr->backend->copy_page (cr); |
| 2482 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 2483 | _cairo_set_error (cr, status); |
| 2484 | } |
| 2485 | |
| 2486 | /** |
| 2487 | * cairo_show_page: |
| 2488 | * @cr: a cairo context |
| 2489 | * |
| 2490 | * Emits and clears the current page for backends that support multiple |
| 2491 | * pages. Use cairo_copy_page() if you don't want to clear the page. |
| 2492 | * |
| 2493 | * This is a convenience function that simply calls |
| 2494 | * cairo_surface_show_page() on @cr's target. |
| 2495 | * |
| 2496 | * Since: 1.0 |
| 2497 | **/ |
| 2498 | void |
| 2499 | cairo_show_page_moz_cairo_show_page (cairo_t *cr) |
| 2500 | { |
| 2501 | cairo_status_t status; |
| 2502 | |
| 2503 | if (unlikely (cr->status)(__builtin_expect (!!(cr->status), 0))) |
| 2504 | return; |
| 2505 | |
| 2506 | status = cr->backend->show_page (cr); |
| 2507 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 2508 | _cairo_set_error (cr, status); |
| 2509 | } |
| 2510 | |
| 2511 | /** |
| 2512 | * cairo_in_stroke: |
| 2513 | * @cr: a cairo context |
| 2514 | * @x: X coordinate of the point to test |
| 2515 | * @y: Y coordinate of the point to test |
| 2516 | * |
| 2517 | * Tests whether the given point is inside the area that would be |
| 2518 | * affected by a cairo_stroke() operation given the current path and |
| 2519 | * stroking parameters. Surface dimensions and clipping are not taken |
| 2520 | * into account. |
| 2521 | * |
| 2522 | * See cairo_stroke(), cairo_set_line_width(), cairo_set_line_join(), |
| 2523 | * cairo_set_line_cap(), cairo_set_dash(), and |
| 2524 | * cairo_stroke_preserve(). |
| 2525 | * |
| 2526 | * Return value: A non-zero value if the point is inside, or zero if |
| 2527 | * outside. |
| 2528 | * |
| 2529 | * Since: 1.0 |
| 2530 | **/ |
| 2531 | cairo_bool_t |
| 2532 | cairo_in_stroke_moz_cairo_in_stroke (cairo_t *cr, double x, double y) |
| 2533 | { |
| 2534 | cairo_status_t status; |
| 2535 | cairo_bool_t inside = FALSE0; |
| 2536 | |
| 2537 | if (unlikely (cr->status)(__builtin_expect (!!(cr->status), 0))) |
| 2538 | return FALSE0; |
| 2539 | |
| 2540 | status = cr->backend->in_stroke (cr, x, y, &inside); |
| 2541 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 2542 | _cairo_set_error (cr, status); |
| 2543 | |
| 2544 | return inside; |
| 2545 | } |
| 2546 | |
| 2547 | /** |
| 2548 | * cairo_in_fill: |
| 2549 | * @cr: a cairo context |
| 2550 | * @x: X coordinate of the point to test |
| 2551 | * @y: Y coordinate of the point to test |
| 2552 | * |
| 2553 | * Tests whether the given point is inside the area that would be |
| 2554 | * affected by a cairo_fill() operation given the current path and |
| 2555 | * filling parameters. Surface dimensions and clipping are not taken |
| 2556 | * into account. |
| 2557 | * |
| 2558 | * See cairo_fill(), cairo_set_fill_rule() and cairo_fill_preserve(). |
| 2559 | * |
| 2560 | * Return value: A non-zero value if the point is inside, or zero if |
| 2561 | * outside. |
| 2562 | * |
| 2563 | * Since: 1.0 |
| 2564 | **/ |
| 2565 | cairo_bool_t |
| 2566 | cairo_in_fill_moz_cairo_in_fill (cairo_t *cr, double x, double y) |
| 2567 | { |
| 2568 | cairo_status_t status; |
| 2569 | cairo_bool_t inside = FALSE0; |
| 2570 | |
| 2571 | if (unlikely (cr->status)(__builtin_expect (!!(cr->status), 0))) |
| 2572 | return FALSE0; |
| 2573 | |
| 2574 | status = cr->backend->in_fill (cr, x, y, &inside); |
| 2575 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 2576 | _cairo_set_error (cr, status); |
| 2577 | |
| 2578 | return inside; |
| 2579 | } |
| 2580 | |
| 2581 | /** |
| 2582 | * cairo_stroke_extents: |
| 2583 | * @cr: a cairo context |
| 2584 | * @x1: left of the resulting extents |
| 2585 | * @y1: top of the resulting extents |
| 2586 | * @x2: right of the resulting extents |
| 2587 | * @y2: bottom of the resulting extents |
| 2588 | * |
| 2589 | * Computes a bounding box in user coordinates covering the area that |
| 2590 | * would be affected, (the "inked" area), by a cairo_stroke() |
| 2591 | * operation given the current path and stroke parameters. |
| 2592 | * If the current path is empty, returns an empty rectangle ((0,0), (0,0)). |
| 2593 | * Surface dimensions and clipping are not taken into account. |
| 2594 | * |
| 2595 | * Note that if the line width is set to exactly zero, then |
| 2596 | * cairo_stroke_extents() will return an empty rectangle. Contrast with |
| 2597 | * cairo_path_extents() which can be used to compute the non-empty |
| 2598 | * bounds as the line width approaches zero. |
| 2599 | * |
| 2600 | * Note that cairo_stroke_extents() must necessarily do more work to |
| 2601 | * compute the precise inked areas in light of the stroke parameters, |
| 2602 | * so cairo_path_extents() may be more desirable for sake of |
| 2603 | * performance if non-inked path extents are desired. |
| 2604 | * |
| 2605 | * See cairo_stroke(), cairo_set_line_width(), cairo_set_line_join(), |
| 2606 | * cairo_set_line_cap(), cairo_set_dash(), and |
| 2607 | * cairo_stroke_preserve(). |
| 2608 | * |
| 2609 | * Since: 1.0 |
| 2610 | **/ |
| 2611 | void |
| 2612 | cairo_stroke_extents_moz_cairo_stroke_extents (cairo_t *cr, |
| 2613 | double *x1, double *y1, double *x2, double *y2) |
| 2614 | { |
| 2615 | cairo_status_t status; |
| 2616 | |
| 2617 | if (unlikely (cr->status)(__builtin_expect (!!(cr->status), 0))) { |
| 2618 | if (x1) |
| 2619 | *x1 = 0.0; |
| 2620 | if (y1) |
| 2621 | *y1 = 0.0; |
| 2622 | if (x2) |
| 2623 | *x2 = 0.0; |
| 2624 | if (y2) |
| 2625 | *y2 = 0.0; |
| 2626 | |
| 2627 | return; |
| 2628 | } |
| 2629 | |
| 2630 | status = cr->backend->stroke_extents (cr, x1, y1, x2, y2); |
| 2631 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 2632 | _cairo_set_error (cr, status); |
| 2633 | } |
| 2634 | |
| 2635 | /** |
| 2636 | * cairo_fill_extents: |
| 2637 | * @cr: a cairo context |
| 2638 | * @x1: left of the resulting extents |
| 2639 | * @y1: top of the resulting extents |
| 2640 | * @x2: right of the resulting extents |
| 2641 | * @y2: bottom of the resulting extents |
| 2642 | * |
| 2643 | * Computes a bounding box in user coordinates covering the area that |
| 2644 | * would be affected, (the "inked" area), by a cairo_fill() operation |
| 2645 | * given the current path and fill parameters. If the current path is |
| 2646 | * empty, returns an empty rectangle ((0,0), (0,0)). Surface |
| 2647 | * dimensions and clipping are not taken into account. |
| 2648 | * |
| 2649 | * Contrast with cairo_path_extents(), which is similar, but returns |
| 2650 | * non-zero extents for some paths with no inked area, (such as a |
| 2651 | * simple line segment). |
| 2652 | * |
| 2653 | * Note that cairo_fill_extents() must necessarily do more work to |
| 2654 | * compute the precise inked areas in light of the fill rule, so |
| 2655 | * cairo_path_extents() may be more desirable for sake of performance |
| 2656 | * if the non-inked path extents are desired. |
| 2657 | * |
| 2658 | * See cairo_fill(), cairo_set_fill_rule() and cairo_fill_preserve(). |
| 2659 | * |
| 2660 | * Since: 1.0 |
| 2661 | **/ |
| 2662 | void |
| 2663 | cairo_fill_extents_moz_cairo_fill_extents (cairo_t *cr, |
| 2664 | double *x1, double *y1, double *x2, double *y2) |
| 2665 | { |
| 2666 | cairo_status_t status; |
| 2667 | |
| 2668 | if (unlikely (cr->status)(__builtin_expect (!!(cr->status), 0))) { |
| 2669 | if (x1) |
| 2670 | *x1 = 0.0; |
| 2671 | if (y1) |
| 2672 | *y1 = 0.0; |
| 2673 | if (x2) |
| 2674 | *x2 = 0.0; |
| 2675 | if (y2) |
| 2676 | *y2 = 0.0; |
| 2677 | |
| 2678 | return; |
| 2679 | } |
| 2680 | |
| 2681 | status = cr->backend->fill_extents (cr, x1, y1, x2, y2); |
| 2682 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 2683 | _cairo_set_error (cr, status); |
| 2684 | } |
| 2685 | |
| 2686 | /** |
| 2687 | * cairo_clip: |
| 2688 | * @cr: a cairo context |
| 2689 | * |
| 2690 | * Establishes a new clip region by intersecting the current clip |
| 2691 | * region with the current path as it would be filled by cairo_fill() |
| 2692 | * and according to the current fill rule (see cairo_set_fill_rule()). |
| 2693 | * |
| 2694 | * After cairo_clip(), the current path will be cleared from the cairo |
| 2695 | * context. |
| 2696 | * |
| 2697 | * The current clip region affects all drawing operations by |
| 2698 | * effectively masking out any changes to the surface that are outside |
| 2699 | * the current clip region. |
| 2700 | * |
| 2701 | * Calling cairo_clip() can only make the clip region smaller, never |
| 2702 | * larger. But the current clip is part of the graphics state, so a |
| 2703 | * temporary restriction of the clip region can be achieved by |
| 2704 | * calling cairo_clip() within a cairo_save()/cairo_restore() |
| 2705 | * pair. The only other means of increasing the size of the clip |
| 2706 | * region is cairo_reset_clip(). |
| 2707 | * |
| 2708 | * Since: 1.0 |
| 2709 | **/ |
| 2710 | void |
| 2711 | cairo_clip_moz_cairo_clip (cairo_t *cr) |
| 2712 | { |
| 2713 | cairo_status_t status; |
| 2714 | |
| 2715 | if (unlikely (cr->status)(__builtin_expect (!!(cr->status), 0))) |
| 2716 | return; |
| 2717 | |
| 2718 | status = cr->backend->clip (cr); |
| 2719 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 2720 | _cairo_set_error (cr, status); |
| 2721 | } |
| 2722 | |
| 2723 | /** |
| 2724 | * cairo_clip_preserve: |
| 2725 | * @cr: a cairo context |
| 2726 | * |
| 2727 | * Establishes a new clip region by intersecting the current clip |
| 2728 | * region with the current path as it would be filled by cairo_fill() |
| 2729 | * and according to the current fill rule (see cairo_set_fill_rule()). |
| 2730 | * |
| 2731 | * Unlike cairo_clip(), cairo_clip_preserve() preserves the path within |
| 2732 | * the cairo context. |
| 2733 | * |
| 2734 | * The current clip region affects all drawing operations by |
| 2735 | * effectively masking out any changes to the surface that are outside |
| 2736 | * the current clip region. |
| 2737 | * |
| 2738 | * Calling cairo_clip_preserve() can only make the clip region smaller, never |
| 2739 | * larger. But the current clip is part of the graphics state, so a |
| 2740 | * temporary restriction of the clip region can be achieved by |
| 2741 | * calling cairo_clip_preserve() within a cairo_save()/cairo_restore() |
| 2742 | * pair. The only other means of increasing the size of the clip |
| 2743 | * region is cairo_reset_clip(). |
| 2744 | * |
| 2745 | * Since: 1.0 |
| 2746 | **/ |
| 2747 | void |
| 2748 | cairo_clip_preserve_moz_cairo_clip_preserve (cairo_t *cr) |
| 2749 | { |
| 2750 | cairo_status_t status; |
| 2751 | |
| 2752 | if (unlikely (cr->status)(__builtin_expect (!!(cr->status), 0))) |
| 2753 | return; |
| 2754 | |
| 2755 | status = cr->backend->clip_preserve (cr); |
| 2756 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 2757 | _cairo_set_error (cr, status); |
| 2758 | } |
| 2759 | |
| 2760 | /** |
| 2761 | * cairo_reset_clip: |
| 2762 | * @cr: a cairo context |
| 2763 | * |
| 2764 | * Reset the current clip region to its original, unrestricted |
| 2765 | * state. That is, set the clip region to an infinitely large shape |
| 2766 | * containing the target surface. Equivalently, if infinity is too |
| 2767 | * hard to grasp, one can imagine the clip region being reset to the |
| 2768 | * exact bounds of the target surface. |
| 2769 | * |
| 2770 | * Note that code meant to be reusable should not call |
| 2771 | * cairo_reset_clip() as it will cause results unexpected by |
| 2772 | * higher-level code which calls cairo_clip(). Consider using |
| 2773 | * cairo_save() and cairo_restore() around cairo_clip() as a more |
| 2774 | * robust means of temporarily restricting the clip region. |
| 2775 | * |
| 2776 | * Since: 1.0 |
| 2777 | **/ |
| 2778 | void |
| 2779 | cairo_reset_clip_moz_cairo_reset_clip (cairo_t *cr) |
| 2780 | { |
| 2781 | cairo_status_t status; |
| 2782 | |
| 2783 | if (unlikely (cr->status)(__builtin_expect (!!(cr->status), 0))) |
| 2784 | return; |
| 2785 | |
| 2786 | status = cr->backend->reset_clip (cr); |
| 2787 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 2788 | _cairo_set_error (cr, status); |
| 2789 | } |
| 2790 | |
| 2791 | /** |
| 2792 | * cairo_clip_extents: |
| 2793 | * @cr: a cairo context |
| 2794 | * @x1: left of the resulting extents |
| 2795 | * @y1: top of the resulting extents |
| 2796 | * @x2: right of the resulting extents |
| 2797 | * @y2: bottom of the resulting extents |
| 2798 | * |
| 2799 | * Computes a bounding box in user coordinates covering the area inside the |
| 2800 | * current clip. |
| 2801 | * |
| 2802 | * Since: 1.4 |
| 2803 | **/ |
| 2804 | void |
| 2805 | cairo_clip_extents_moz_cairo_clip_extents (cairo_t *cr, |
| 2806 | double *x1, double *y1, |
| 2807 | double *x2, double *y2) |
| 2808 | { |
| 2809 | cairo_status_t status; |
| 2810 | |
| 2811 | if (x1) |
| 2812 | *x1 = 0.0; |
| 2813 | if (y1) |
| 2814 | *y1 = 0.0; |
| 2815 | if (x2) |
| 2816 | *x2 = 0.0; |
| 2817 | if (y2) |
| 2818 | *y2 = 0.0; |
| 2819 | |
| 2820 | if (unlikely (cr->status)(__builtin_expect (!!(cr->status), 0))) |
| 2821 | return; |
| 2822 | |
| 2823 | status = cr->backend->clip_extents (cr, x1, y1, x2, y2); |
| 2824 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 2825 | _cairo_set_error (cr, status); |
| 2826 | } |
| 2827 | |
| 2828 | /** |
| 2829 | * cairo_in_clip: |
| 2830 | * @cr: a cairo context |
| 2831 | * @x: X coordinate of the point to test |
| 2832 | * @y: Y coordinate of the point to test |
| 2833 | * |
| 2834 | * Tests whether the given point is inside the area that would be |
| 2835 | * visible through the current clip, i.e. the area that would be filled by |
| 2836 | * a cairo_paint() operation. |
| 2837 | * |
| 2838 | * See cairo_clip(), and cairo_clip_preserve(). |
| 2839 | * |
| 2840 | * Return value: A non-zero value if the point is inside, or zero if |
| 2841 | * outside. |
| 2842 | * |
| 2843 | * Since: 1.10 |
| 2844 | **/ |
| 2845 | cairo_bool_t |
| 2846 | cairo_in_clip_moz_cairo_in_clip (cairo_t *cr, double x, double y) |
| 2847 | { |
| 2848 | cairo_status_t status; |
| 2849 | cairo_bool_t inside = FALSE0; |
| 2850 | |
| 2851 | if (unlikely (cr->status)(__builtin_expect (!!(cr->status), 0))) |
| 2852 | return FALSE0; |
| 2853 | |
| 2854 | status = cr->backend->in_clip (cr, x, y, &inside); |
| 2855 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 2856 | _cairo_set_error (cr, status); |
| 2857 | |
| 2858 | return inside; |
| 2859 | } |
| 2860 | |
| 2861 | /** |
| 2862 | * cairo_copy_clip_rectangle_list: |
| 2863 | * @cr: a cairo context |
| 2864 | * |
| 2865 | * Gets the current clip region as a list of rectangles in user coordinates. |
| 2866 | * Never returns %NULL. |
| 2867 | * |
| 2868 | * The status in the list may be %CAIRO_STATUS_CLIP_NOT_REPRESENTABLE to |
| 2869 | * indicate that the clip region cannot be represented as a list of |
| 2870 | * user-space rectangles. The status may have other values to indicate |
| 2871 | * other errors. |
| 2872 | * |
| 2873 | * Returns: the current clip region as a list of rectangles in user coordinates, |
| 2874 | * which should be destroyed using cairo_rectangle_list_destroy(). |
| 2875 | * |
| 2876 | * Since: 1.4 |
| 2877 | **/ |
| 2878 | cairo_rectangle_list_t * |
| 2879 | cairo_copy_clip_rectangle_list_moz_cairo_copy_clip_rectangle_list (cairo_t *cr) |
| 2880 | { |
| 2881 | if (unlikely (cr->status)(__builtin_expect (!!(cr->status), 0))) |
| 2882 | return _cairo_rectangle_list_create_in_error (cr->status); |
| 2883 | |
| 2884 | return cr->backend->clip_copy_rectangle_list (cr); |
| 2885 | } |
| 2886 | |
| 2887 | /** |
| 2888 | * CAIRO_TAG_DEST: |
| 2889 | * |
| 2890 | * Create a destination for a hyperlink. Destination tag attributes |
| 2891 | * are detailed at [Destinations][dest]. |
| 2892 | * |
| 2893 | * Since: 1.16 |
| 2894 | **/ |
| 2895 | |
| 2896 | /** |
| 2897 | * CAIRO_TAG_LINK: |
| 2898 | * |
| 2899 | * Create hyperlink. Link tag attributes are detailed at |
| 2900 | * [Links][link]. |
| 2901 | * |
| 2902 | * Since: 1.16 |
| 2903 | **/ |
| 2904 | |
| 2905 | /** |
| 2906 | * CAIRO_TAG_CONTENT: |
| 2907 | * |
| 2908 | * Create a content tag. |
| 2909 | * |
| 2910 | * Since: 1.18 |
| 2911 | **/ |
| 2912 | |
| 2913 | /** |
| 2914 | * CAIRO_TAG_CONTENT_REF: |
| 2915 | * |
| 2916 | * Create a content reference tag. |
| 2917 | * |
| 2918 | * Since: 1.18 |
| 2919 | **/ |
| 2920 | |
| 2921 | /** |
| 2922 | * cairo_tag_begin: |
| 2923 | * @cr: a cairo context |
| 2924 | * @tag_name: tag name |
| 2925 | * @attributes: tag attributes |
| 2926 | * |
| 2927 | * Marks the beginning of the @tag_name structure. Call |
| 2928 | * cairo_tag_end() with the same @tag_name to mark the end of the |
| 2929 | * structure. |
| 2930 | * |
| 2931 | * The attributes string is of the form "key1=value2 key2=value2 ...". |
| 2932 | * Values may be boolean (true/false or 1/0), integer, float, string, |
| 2933 | * or an array. |
| 2934 | * |
| 2935 | * String values are enclosed in single quotes |
| 2936 | * ('). Single quotes and backslashes inside the string should be |
| 2937 | * escaped with a backslash. |
| 2938 | * |
| 2939 | * Boolean values may be set to true by only |
| 2940 | * specifying the key. eg the attribute string "key" is the equivalent |
| 2941 | * to "key=true". |
| 2942 | * |
| 2943 | * Arrays are enclosed in '[]'. eg "rect=[1.2 4.3 2.0 3.0]". |
| 2944 | * |
| 2945 | * If no attributes are required, @attributes can be an empty string or NULL. |
| 2946 | * |
| 2947 | * See [Tags and Links Description][cairo-Tags-and-Links.description] |
| 2948 | * for the list of tags and attributes. |
| 2949 | * |
| 2950 | * Invalid nesting of tags or invalid attributes will cause @cr to |
| 2951 | * shutdown with a status of %CAIRO_STATUS_TAG_ERROR. |
| 2952 | * |
| 2953 | * See cairo_tag_end(). |
| 2954 | * |
| 2955 | * Since: 1.16 |
| 2956 | **/ |
| 2957 | void |
| 2958 | cairo_tag_begin (cairo_t *cr, const char *tag_name, const char *attributes) |
| 2959 | { |
| 2960 | cairo_status_t status; |
| 2961 | |
| 2962 | if (unlikely (cr->status)(__builtin_expect (!!(cr->status), 0))) |
| 2963 | return; |
| 2964 | |
| 2965 | status = cr->backend->tag_begin (cr, tag_name, attributes); |
| 2966 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 2967 | _cairo_set_error (cr, status); |
| 2968 | } |
| 2969 | |
| 2970 | /** |
| 2971 | * cairo_tag_end: |
| 2972 | * @cr: a cairo context |
| 2973 | * @tag_name: tag name |
| 2974 | * |
| 2975 | * Marks the end of the @tag_name structure. |
| 2976 | * |
| 2977 | * Invalid nesting of tags will cause @cr to shutdown with a status of |
| 2978 | * %CAIRO_STATUS_TAG_ERROR. |
| 2979 | * |
| 2980 | * See cairo_tag_begin(). |
| 2981 | * |
| 2982 | * Since: 1.16 |
| 2983 | **/ |
| 2984 | cairo_publicextern __attribute__((visibility("hidden"))) void |
| 2985 | cairo_tag_end (cairo_t *cr, const char *tag_name) |
| 2986 | { |
| 2987 | cairo_status_t status; |
| 2988 | |
| 2989 | if (unlikely (cr->status)(__builtin_expect (!!(cr->status), 0))) |
| 2990 | return; |
| 2991 | |
| 2992 | status = cr->backend->tag_end (cr, tag_name); |
| 2993 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 2994 | _cairo_set_error (cr, status); |
| 2995 | } |
| 2996 | |
| 2997 | /** |
| 2998 | * cairo_select_font_face: |
| 2999 | * @cr: a #cairo_t |
| 3000 | * @family: a font family name, encoded in UTF-8 |
| 3001 | * @slant: the slant for the font |
| 3002 | * @weight: the weight for the font |
| 3003 | * |
| 3004 | * Note: The cairo_select_font_face() function call is part of what |
| 3005 | * the cairo designers call the "toy" text API. It is convenient for |
| 3006 | * short demos and simple programs, but it is not expected to be |
| 3007 | * adequate for serious text-using applications. |
| 3008 | * |
| 3009 | * Selects a family and style of font from a simplified description as |
| 3010 | * a family name, slant and weight. Cairo provides no operation to |
| 3011 | * list available family names on the system (this is a "toy", |
| 3012 | * remember), but the standard CSS2 generic family names, ("serif", |
| 3013 | * "sans-serif", "cursive", "fantasy", "monospace"), are likely to |
| 3014 | * work as expected. |
| 3015 | * |
| 3016 | * If @family starts with the string "@cairo:", or if no native font |
| 3017 | * backends are compiled in, cairo will use an internal font family. |
| 3018 | * The internal font family recognizes many modifiers in the @family |
| 3019 | * string, most notably, it recognizes the string "monospace". That is, |
| 3020 | * the family name "@cairo:monospace" will use the monospace version of |
| 3021 | * the internal font family. |
| 3022 | * |
| 3023 | * For "real" font selection, see the font-backend-specific |
| 3024 | * font_face_create functions for the font backend you are using. (For |
| 3025 | * example, if you are using the freetype-based cairo-ft font backend, |
| 3026 | * see cairo_ft_font_face_create_for_ft_face() or |
| 3027 | * cairo_ft_font_face_create_for_pattern().) The resulting font face |
| 3028 | * could then be used with cairo_scaled_font_create() and |
| 3029 | * cairo_set_scaled_font(). |
| 3030 | * |
| 3031 | * Similarly, when using the "real" font support, you can call |
| 3032 | * directly into the underlying font system, (such as fontconfig or |
| 3033 | * freetype), for operations such as listing available fonts, etc. |
| 3034 | * |
| 3035 | * It is expected that most applications will need to use a more |
| 3036 | * comprehensive font handling and text layout library, (for example, |
| 3037 | * pango), in conjunction with cairo. |
| 3038 | * |
| 3039 | * If text is drawn without a call to cairo_select_font_face(), (nor |
| 3040 | * cairo_set_font_face() nor cairo_set_scaled_font()), the default |
| 3041 | * family is platform-specific, but is essentially "sans-serif". |
| 3042 | * Default slant is %CAIRO_FONT_SLANT_NORMAL, and default weight is |
| 3043 | * %CAIRO_FONT_WEIGHT_NORMAL. |
| 3044 | * |
| 3045 | * This function is equivalent to a call to cairo_toy_font_face_create() |
| 3046 | * followed by cairo_set_font_face(). |
| 3047 | * |
| 3048 | * Since: 1.0 |
| 3049 | **/ |
| 3050 | void |
| 3051 | cairo_select_font_face_moz_cairo_select_font_face (cairo_t *cr, |
| 3052 | const char *family, |
| 3053 | cairo_font_slant_t slant, |
| 3054 | cairo_font_weight_t weight) |
| 3055 | { |
| 3056 | cairo_font_face_t *font_face; |
| 3057 | cairo_status_t status; |
| 3058 | |
| 3059 | if (unlikely (cr->status)(__builtin_expect (!!(cr->status), 0))) |
| 3060 | return; |
| 3061 | |
| 3062 | font_face = cairo_toy_font_face_create_moz_cairo_toy_font_face_create (family, slant, weight); |
| 3063 | if (unlikely (font_face->status)(__builtin_expect (!!(font_face->status), 0))) { |
| 3064 | _cairo_set_error (cr, font_face->status); |
| 3065 | return; |
| 3066 | } |
| 3067 | |
| 3068 | status = cr->backend->set_font_face (cr, font_face); |
| 3069 | cairo_font_face_destroy_moz_cairo_font_face_destroy (font_face); |
| 3070 | |
| 3071 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 3072 | _cairo_set_error (cr, status); |
| 3073 | } |
| 3074 | |
| 3075 | /** |
| 3076 | * cairo_font_extents: |
| 3077 | * @cr: a #cairo_t |
| 3078 | * @extents: a #cairo_font_extents_t object into which the results |
| 3079 | * will be stored. |
| 3080 | * |
| 3081 | * Gets the font extents for the currently selected font. |
| 3082 | * |
| 3083 | * Since: 1.0 |
| 3084 | **/ |
| 3085 | void |
| 3086 | cairo_font_extents_moz_cairo_font_extents (cairo_t *cr, |
| 3087 | cairo_font_extents_t *extents) |
| 3088 | { |
| 3089 | cairo_status_t status; |
| 3090 | |
| 3091 | extents->ascent = 0.0; |
| 3092 | extents->descent = 0.0; |
| 3093 | extents->height = 0.0; |
| 3094 | extents->max_x_advance = 0.0; |
| 3095 | extents->max_y_advance = 0.0; |
| 3096 | |
| 3097 | if (unlikely (cr->status)(__builtin_expect (!!(cr->status), 0))) |
| 3098 | return; |
| 3099 | |
| 3100 | status = cr->backend->font_extents (cr, extents); |
| 3101 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 3102 | _cairo_set_error (cr, status); |
| 3103 | } |
| 3104 | |
| 3105 | /** |
| 3106 | * cairo_set_font_face: |
| 3107 | * @cr: a #cairo_t |
| 3108 | * @font_face: a #cairo_font_face_t, or %NULL to restore to the default font |
| 3109 | * |
| 3110 | * Replaces the current #cairo_font_face_t object in the #cairo_t with |
| 3111 | * @font_face. The replaced font face in the #cairo_t will be |
| 3112 | * destroyed if there are no other references to it. |
| 3113 | * |
| 3114 | * Since: 1.0 |
| 3115 | **/ |
| 3116 | void |
| 3117 | cairo_set_font_face_moz_cairo_set_font_face (cairo_t *cr, |
| 3118 | cairo_font_face_t *font_face) |
| 3119 | { |
| 3120 | cairo_status_t status; |
| 3121 | |
| 3122 | if (unlikely (cr->status)(__builtin_expect (!!(cr->status), 0))) |
| 3123 | return; |
| 3124 | |
| 3125 | status = cr->backend->set_font_face (cr, font_face); |
| 3126 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 3127 | _cairo_set_error (cr, status); |
| 3128 | } |
| 3129 | |
| 3130 | /** |
| 3131 | * cairo_get_font_face: |
| 3132 | * @cr: a #cairo_t |
| 3133 | * |
| 3134 | * Gets the current font face for a #cairo_t. |
| 3135 | * |
| 3136 | * Return value: the current font face. This object is owned by |
| 3137 | * cairo. To keep a reference to it, you must call |
| 3138 | * cairo_font_face_reference(). |
| 3139 | * |
| 3140 | * This function never returns %NULL. If memory cannot be allocated, a |
| 3141 | * special "nil" #cairo_font_face_t object will be returned on which |
| 3142 | * cairo_font_face_status() returns %CAIRO_STATUS_NO_MEMORY. Using |
| 3143 | * this nil object will cause its error state to propagate to other |
| 3144 | * objects it is passed to, (for example, calling |
| 3145 | * cairo_set_font_face() with a nil font will trigger an error that |
| 3146 | * will shutdown the #cairo_t object). |
| 3147 | * |
| 3148 | * Since: 1.0 |
| 3149 | **/ |
| 3150 | cairo_font_face_t * |
| 3151 | cairo_get_font_face_moz_cairo_get_font_face (cairo_t *cr) |
| 3152 | { |
| 3153 | if (unlikely (cr->status)(__builtin_expect (!!(cr->status), 0))) |
| 3154 | return (cairo_font_face_t*) &_cairo_font_face_nil; |
| 3155 | |
| 3156 | return cr->backend->get_font_face (cr); |
| 3157 | } |
| 3158 | |
| 3159 | /** |
| 3160 | * cairo_set_font_size: |
| 3161 | * @cr: a #cairo_t |
| 3162 | * @size: the new font size, in user space units |
| 3163 | * |
| 3164 | * Sets the current font matrix to a scale by a factor of @size, replacing |
| 3165 | * any font matrix previously set with cairo_set_font_size() or |
| 3166 | * cairo_set_font_matrix(). This results in a font size of @size user space |
| 3167 | * units. (More precisely, this matrix will result in the font's |
| 3168 | * em-square being a @size by @size square in user space.) |
| 3169 | * |
| 3170 | * If text is drawn without a call to cairo_set_font_size(), (nor |
| 3171 | * cairo_set_font_matrix() nor cairo_set_scaled_font()), the default |
| 3172 | * font size is 10.0. |
| 3173 | * |
| 3174 | * Since: 1.0 |
| 3175 | **/ |
| 3176 | void |
| 3177 | cairo_set_font_size_moz_cairo_set_font_size (cairo_t *cr, double size) |
| 3178 | { |
| 3179 | cairo_status_t status; |
| 3180 | |
| 3181 | if (unlikely (cr->status)(__builtin_expect (!!(cr->status), 0))) |
| 3182 | return; |
| 3183 | |
| 3184 | status = cr->backend->set_font_size (cr, size); |
| 3185 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 3186 | _cairo_set_error (cr, status); |
| 3187 | } |
| 3188 | |
| 3189 | /** |
| 3190 | * cairo_set_font_matrix: |
| 3191 | * @cr: a #cairo_t |
| 3192 | * @matrix: a #cairo_matrix_t describing a transform to be applied to |
| 3193 | * the current font. |
| 3194 | * |
| 3195 | * Sets the current font matrix to @matrix. The font matrix gives a |
| 3196 | * transformation from the design space of the font (in this space, |
| 3197 | * the em-square is 1 unit by 1 unit) to user space. Normally, a |
| 3198 | * simple scale is used (see cairo_set_font_size()), but a more |
| 3199 | * complex font matrix can be used to shear the font |
| 3200 | * or stretch it unequally along the two axes |
| 3201 | * |
| 3202 | * Since: 1.0 |
| 3203 | **/ |
| 3204 | void |
| 3205 | cairo_set_font_matrix_moz_cairo_set_font_matrix (cairo_t *cr, |
| 3206 | const cairo_matrix_t *matrix) |
| 3207 | { |
| 3208 | cairo_status_t status; |
| 3209 | |
| 3210 | if (unlikely (cr->status)(__builtin_expect (!!(cr->status), 0))) |
| 3211 | return; |
| 3212 | |
| 3213 | status = cr->backend->set_font_matrix (cr, matrix); |
| 3214 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 3215 | _cairo_set_error (cr, status); |
| 3216 | } |
| 3217 | |
| 3218 | /** |
| 3219 | * cairo_get_font_matrix: |
| 3220 | * @cr: a #cairo_t |
| 3221 | * @matrix: return value for the matrix |
| 3222 | * |
| 3223 | * Stores the current font matrix into @matrix. See |
| 3224 | * cairo_set_font_matrix(). |
| 3225 | * |
| 3226 | * Since: 1.0 |
| 3227 | **/ |
| 3228 | void |
| 3229 | cairo_get_font_matrix_moz_cairo_get_font_matrix (cairo_t *cr, cairo_matrix_t *matrix) |
| 3230 | { |
| 3231 | if (unlikely (cr->status)(__builtin_expect (!!(cr->status), 0))) { |
| 3232 | cairo_matrix_init_identity_moz_cairo_matrix_init_identity (matrix); |
| 3233 | return; |
| 3234 | } |
| 3235 | |
| 3236 | cr->backend->get_font_matrix (cr, matrix); |
| 3237 | } |
| 3238 | |
| 3239 | /** |
| 3240 | * cairo_set_font_options: |
| 3241 | * @cr: a #cairo_t |
| 3242 | * @options: font options to use |
| 3243 | * |
| 3244 | * Sets a set of custom font rendering options for the #cairo_t. |
| 3245 | * Rendering options are derived by merging these options with the |
| 3246 | * options derived from underlying surface; if the value in @options |
| 3247 | * has a default value (like %CAIRO_ANTIALIAS_DEFAULT), then the value |
| 3248 | * from the surface is used. |
| 3249 | * |
| 3250 | * Since: 1.0 |
| 3251 | **/ |
| 3252 | void |
| 3253 | cairo_set_font_options_moz_cairo_set_font_options (cairo_t *cr, |
| 3254 | const cairo_font_options_t *options) |
| 3255 | { |
| 3256 | cairo_status_t status; |
| 3257 | |
| 3258 | if (unlikely (cr->status)(__builtin_expect (!!(cr->status), 0))) |
| 3259 | return; |
| 3260 | |
| 3261 | status = cairo_font_options_status_moz_cairo_font_options_status ((cairo_font_options_t *) options); |
| 3262 | if (unlikely (status)(__builtin_expect (!!(status), 0))) { |
| 3263 | _cairo_set_error (cr, status); |
| 3264 | return; |
| 3265 | } |
| 3266 | |
| 3267 | status = cr->backend->set_font_options (cr, options); |
| 3268 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 3269 | _cairo_set_error (cr, status); |
| 3270 | } |
| 3271 | |
| 3272 | /** |
| 3273 | * cairo_get_font_options: |
| 3274 | * @cr: a #cairo_t |
| 3275 | * @options: a #cairo_font_options_t object into which to store |
| 3276 | * the retrieved options. All existing values are overwritten |
| 3277 | * |
| 3278 | * Retrieves font rendering options set via #cairo_set_font_options. |
| 3279 | * Note that the returned options do not include any options derived |
| 3280 | * from the underlying surface; they are literally the options |
| 3281 | * passed to cairo_set_font_options(). |
| 3282 | * |
| 3283 | * Since: 1.0 |
| 3284 | **/ |
| 3285 | void |
| 3286 | cairo_get_font_options_moz_cairo_get_font_options (cairo_t *cr, |
| 3287 | cairo_font_options_t *options) |
| 3288 | { |
| 3289 | /* check that we aren't trying to overwrite the nil object */ |
| 3290 | if (cairo_font_options_status_moz_cairo_font_options_status (options)) |
| 3291 | return; |
| 3292 | |
| 3293 | if (unlikely (cr->status)(__builtin_expect (!!(cr->status), 0))) { |
| 3294 | _cairo_font_options_init_default (options); |
| 3295 | return; |
| 3296 | } |
| 3297 | |
| 3298 | cr->backend->get_font_options (cr, options); |
| 3299 | } |
| 3300 | |
| 3301 | /** |
| 3302 | * cairo_set_scaled_font: |
| 3303 | * @cr: a #cairo_t |
| 3304 | * @scaled_font: a #cairo_scaled_font_t |
| 3305 | * |
| 3306 | * Replaces the current font face, font matrix, and font options in |
| 3307 | * the #cairo_t with those of the #cairo_scaled_font_t. Except for |
| 3308 | * some translation, the current CTM of the #cairo_t should be the |
| 3309 | * same as that of the #cairo_scaled_font_t, which can be accessed |
| 3310 | * using cairo_scaled_font_get_ctm(). |
| 3311 | * |
| 3312 | * Since: 1.2 |
| 3313 | **/ |
| 3314 | void |
| 3315 | cairo_set_scaled_font_moz_cairo_set_scaled_font (cairo_t *cr, |
| 3316 | const cairo_scaled_font_t *scaled_font) |
| 3317 | { |
| 3318 | cairo_status_t status; |
| 3319 | |
| 3320 | if (unlikely (cr->status)(__builtin_expect (!!(cr->status), 0))) |
| 3321 | return; |
| 3322 | |
| 3323 | if (scaled_font == NULL((void*)0)) { |
| 3324 | _cairo_set_error (cr, _cairo_error (CAIRO_STATUS_NULL_POINTER)); |
| 3325 | return; |
| 3326 | } |
| 3327 | |
| 3328 | status = scaled_font->status; |
| 3329 | if (unlikely (status)(__builtin_expect (!!(status), 0))) { |
| 3330 | _cairo_set_error (cr, status); |
| 3331 | return; |
| 3332 | } |
| 3333 | |
| 3334 | status = cr->backend->set_scaled_font (cr, (cairo_scaled_font_t *) scaled_font); |
| 3335 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 3336 | _cairo_set_error (cr, status); |
| 3337 | } |
| 3338 | |
| 3339 | /** |
| 3340 | * cairo_get_scaled_font: |
| 3341 | * @cr: a #cairo_t |
| 3342 | * |
| 3343 | * Gets the current scaled font for a #cairo_t. |
| 3344 | * |
| 3345 | * Return value: the current scaled font. This object is owned by |
| 3346 | * cairo. To keep a reference to it, you must call |
| 3347 | * cairo_scaled_font_reference(). |
| 3348 | * |
| 3349 | * This function never returns %NULL. If memory cannot be allocated, a |
| 3350 | * special "nil" #cairo_scaled_font_t object will be returned on which |
| 3351 | * cairo_scaled_font_status() returns %CAIRO_STATUS_NO_MEMORY. Using |
| 3352 | * this nil object will cause its error state to propagate to other |
| 3353 | * objects it is passed to, (for example, calling |
| 3354 | * cairo_set_scaled_font() with a nil font will trigger an error that |
| 3355 | * will shutdown the #cairo_t object). |
| 3356 | * |
| 3357 | * Since: 1.4 |
| 3358 | **/ |
| 3359 | cairo_scaled_font_t * |
| 3360 | cairo_get_scaled_font_moz_cairo_get_scaled_font (cairo_t *cr) |
| 3361 | { |
| 3362 | if (unlikely (cr->status)(__builtin_expect (!!(cr->status), 0))) |
| 3363 | return _cairo_scaled_font_create_in_error (cr->status); |
| 3364 | |
| 3365 | return cr->backend->get_scaled_font (cr); |
| 3366 | } |
| 3367 | |
| 3368 | /** |
| 3369 | * cairo_text_extents: |
| 3370 | * @cr: a #cairo_t |
| 3371 | * @utf8: a NUL-terminated string of text encoded in UTF-8, or %NULL |
| 3372 | * @extents: a #cairo_text_extents_t object into which the results |
| 3373 | * will be stored |
| 3374 | * |
| 3375 | * Gets the extents for a string of text. The extents describe a |
| 3376 | * user-space rectangle that encloses the "inked" portion of the text, |
| 3377 | * (as it would be drawn by cairo_show_text()). Additionally, the |
| 3378 | * x_advance and y_advance values indicate the amount by which the |
| 3379 | * current point would be advanced by cairo_show_text(). |
| 3380 | * |
| 3381 | * Note that whitespace characters do not directly contribute to the |
| 3382 | * size of the rectangle (extents.width and extents.height). They do |
| 3383 | * contribute indirectly by changing the position of non-whitespace |
| 3384 | * characters. In particular, trailing whitespace characters are |
| 3385 | * likely to not affect the size of the rectangle, though they will |
| 3386 | * affect the x_advance and y_advance values. |
| 3387 | * |
| 3388 | * Since: 1.0 |
| 3389 | **/ |
| 3390 | void |
| 3391 | cairo_text_extents_moz_cairo_text_extents (cairo_t *cr, |
| 3392 | const char *utf8, |
| 3393 | cairo_text_extents_t *extents) |
| 3394 | { |
| 3395 | cairo_status_t status; |
| 3396 | cairo_scaled_font_t *scaled_font; |
| 3397 | cairo_glyph_t *glyphs = NULL((void*)0); |
| 3398 | int num_glyphs = 0; |
| 3399 | double x, y; |
| 3400 | |
| 3401 | extents->x_bearing = 0.0; |
| 3402 | extents->y_bearing = 0.0; |
| 3403 | extents->width = 0.0; |
| 3404 | extents->height = 0.0; |
| 3405 | extents->x_advance = 0.0; |
| 3406 | extents->y_advance = 0.0; |
| 3407 | |
| 3408 | if (unlikely (cr->status)(__builtin_expect (!!(cr->status), 0))) |
| 3409 | return; |
| 3410 | |
| 3411 | if (utf8 == NULL((void*)0)) |
| 3412 | return; |
| 3413 | |
| 3414 | scaled_font = cairo_get_scaled_font_moz_cairo_get_scaled_font (cr); |
| 3415 | if (unlikely (scaled_font->status)(__builtin_expect (!!(scaled_font->status), 0))) { |
| 3416 | _cairo_set_error (cr, scaled_font->status); |
| 3417 | return; |
| 3418 | } |
| 3419 | |
| 3420 | cairo_get_current_point_moz_cairo_get_current_point (cr, &x, &y); |
| 3421 | status = cairo_scaled_font_text_to_glyphs_moz_cairo_scaled_font_text_to_glyphs (scaled_font, |
| 3422 | x, y, |
| 3423 | utf8, -1, |
| 3424 | &glyphs, &num_glyphs, |
| 3425 | NULL((void*)0), NULL((void*)0), NULL((void*)0)); |
| 3426 | |
| 3427 | if (likely (status == CAIRO_STATUS_SUCCESS)(__builtin_expect (!!(status == CAIRO_STATUS_SUCCESS), 1))) { |
| 3428 | status = cr->backend->glyph_extents (cr, |
| 3429 | glyphs, num_glyphs, |
| 3430 | extents); |
| 3431 | } |
| 3432 | cairo_glyph_free_moz_cairo_glyph_free (glyphs); |
| 3433 | |
| 3434 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 3435 | _cairo_set_error (cr, status); |
| 3436 | } |
| 3437 | |
| 3438 | /** |
| 3439 | * cairo_glyph_extents: |
| 3440 | * @cr: a #cairo_t |
| 3441 | * @glyphs: an array of #cairo_glyph_t objects |
| 3442 | * @num_glyphs: the number of elements in @glyphs |
| 3443 | * @extents: a #cairo_text_extents_t object into which the results |
| 3444 | * will be stored |
| 3445 | * |
| 3446 | * Gets the extents for an array of glyphs. The extents describe a |
| 3447 | * user-space rectangle that encloses the "inked" portion of the |
| 3448 | * glyphs, (as they would be drawn by cairo_show_glyphs()). |
| 3449 | * Additionally, the x_advance and y_advance values indicate the |
| 3450 | * amount by which the current point would be advanced by |
| 3451 | * cairo_show_glyphs(). |
| 3452 | * |
| 3453 | * Note that whitespace glyphs do not contribute to the size of the |
| 3454 | * rectangle (extents.width and extents.height). |
| 3455 | * |
| 3456 | * Since: 1.0 |
| 3457 | **/ |
| 3458 | void |
| 3459 | cairo_glyph_extents_moz_cairo_glyph_extents (cairo_t *cr, |
| 3460 | const cairo_glyph_t *glyphs, |
| 3461 | int num_glyphs, |
| 3462 | cairo_text_extents_t *extents) |
| 3463 | { |
| 3464 | cairo_status_t status; |
| 3465 | |
| 3466 | extents->x_bearing = 0.0; |
| 3467 | extents->y_bearing = 0.0; |
| 3468 | extents->width = 0.0; |
| 3469 | extents->height = 0.0; |
| 3470 | extents->x_advance = 0.0; |
| 3471 | extents->y_advance = 0.0; |
| 3472 | |
| 3473 | if (unlikely (cr->status)(__builtin_expect (!!(cr->status), 0))) |
| 3474 | return; |
| 3475 | |
| 3476 | if (num_glyphs == 0) |
| 3477 | return; |
| 3478 | |
| 3479 | if (unlikely (num_glyphs < 0)(__builtin_expect (!!(num_glyphs < 0), 0))) { |
| 3480 | _cairo_set_error (cr, CAIRO_STATUS_NEGATIVE_COUNT); |
| 3481 | return; |
| 3482 | } |
| 3483 | |
| 3484 | if (unlikely (glyphs == NULL)(__builtin_expect (!!(glyphs == ((void*)0)), 0))) { |
| 3485 | _cairo_set_error (cr, CAIRO_STATUS_NULL_POINTER); |
| 3486 | return; |
| 3487 | } |
| 3488 | |
| 3489 | status = cr->backend->glyph_extents (cr, glyphs, num_glyphs, extents); |
| 3490 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 3491 | _cairo_set_error (cr, status); |
| 3492 | } |
| 3493 | |
| 3494 | /** |
| 3495 | * cairo_show_text: |
| 3496 | * @cr: a cairo context |
| 3497 | * @utf8: a NUL-terminated string of text encoded in UTF-8, or %NULL |
| 3498 | * |
| 3499 | * A drawing operator that generates the shape from a string of UTF-8 |
| 3500 | * characters, rendered according to the current font_face, font_size |
| 3501 | * (font_matrix), and font_options. |
| 3502 | * |
| 3503 | * This function first computes a set of glyphs for the string of |
| 3504 | * text. The first glyph is placed so that its origin is at the |
| 3505 | * current point. The origin of each subsequent glyph is offset from |
| 3506 | * that of the previous glyph by the advance values of the previous |
| 3507 | * glyph. |
| 3508 | * |
| 3509 | * After this call the current point is moved to the origin of where |
| 3510 | * the next glyph would be placed in this same progression. That is, |
| 3511 | * the current point will be at the origin of the final glyph offset |
| 3512 | * by its advance values. This allows for easy display of a single |
| 3513 | * logical string with multiple calls to cairo_show_text(). |
| 3514 | * |
| 3515 | * Note: The cairo_show_text() function call is part of what the cairo |
| 3516 | * designers call the "toy" text API. It is convenient for short demos |
| 3517 | * and simple programs, but it is not expected to be adequate for |
| 3518 | * serious text-using applications. See cairo_show_glyphs() for the |
| 3519 | * "real" text display API in cairo. |
| 3520 | * |
| 3521 | * Since: 1.0 |
| 3522 | **/ |
| 3523 | void |
| 3524 | cairo_show_text_moz_cairo_show_text (cairo_t *cr, const char *utf8) |
| 3525 | { |
| 3526 | cairo_text_extents_t extents; |
| 3527 | cairo_status_t status; |
| 3528 | cairo_glyph_t *glyphs, *last_glyph; |
| 3529 | cairo_text_cluster_t *clusters; |
| 3530 | int utf8_len, num_glyphs, num_clusters; |
| 3531 | cairo_text_cluster_flags_t cluster_flags; |
| 3532 | double x, y; |
| 3533 | cairo_bool_t has_show_text_glyphs; |
| 3534 | cairo_glyph_t stack_glyphs[CAIRO_STACK_ARRAY_LENGTH (cairo_glyph_t)((512 * sizeof (int)) / sizeof(cairo_glyph_t))]; |
| 3535 | cairo_text_cluster_t stack_clusters[CAIRO_STACK_ARRAY_LENGTH (cairo_text_cluster_t)((512 * sizeof (int)) / sizeof(cairo_text_cluster_t))]; |
| 3536 | cairo_scaled_font_t *scaled_font; |
| 3537 | cairo_glyph_text_info_t info, *i; |
| 3538 | |
| 3539 | if (unlikely (cr->status)(__builtin_expect (!!(cr->status), 0))) |
| 3540 | return; |
| 3541 | |
| 3542 | if (utf8 == NULL((void*)0)) |
| 3543 | return; |
| 3544 | |
| 3545 | scaled_font = cairo_get_scaled_font_moz_cairo_get_scaled_font (cr); |
| 3546 | if (unlikely (scaled_font->status)(__builtin_expect (!!(scaled_font->status), 0))) { |
| 3547 | _cairo_set_error (cr, scaled_font->status); |
| 3548 | return; |
| 3549 | } |
| 3550 | |
| 3551 | utf8_len = strlen (utf8); |
| 3552 | |
| 3553 | has_show_text_glyphs = |
| 3554 | cairo_surface_has_show_text_glyphs_moz_cairo_surface_has_show_text_glyphs (cairo_get_target_moz_cairo_get_target (cr)); |
| 3555 | |
| 3556 | glyphs = stack_glyphs; |
| 3557 | num_glyphs = ARRAY_LENGTH (stack_glyphs)((int) (sizeof (stack_glyphs) / sizeof (stack_glyphs[0]))); |
| 3558 | |
| 3559 | if (has_show_text_glyphs) { |
| 3560 | clusters = stack_clusters; |
| 3561 | num_clusters = ARRAY_LENGTH (stack_clusters)((int) (sizeof (stack_clusters) / sizeof (stack_clusters[0])) ); |
| 3562 | } else { |
| 3563 | clusters = NULL((void*)0); |
| 3564 | num_clusters = 0; |
| 3565 | } |
| 3566 | |
| 3567 | cairo_get_current_point_moz_cairo_get_current_point (cr, &x, &y); |
| 3568 | status = cairo_scaled_font_text_to_glyphs_moz_cairo_scaled_font_text_to_glyphs (scaled_font, |
| 3569 | x, y, |
| 3570 | utf8, utf8_len, |
| 3571 | &glyphs, &num_glyphs, |
| 3572 | has_show_text_glyphs ? &clusters : NULL((void*)0), &num_clusters, |
| 3573 | &cluster_flags); |
| 3574 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 3575 | goto BAIL; |
| 3576 | |
| 3577 | if (num_glyphs == 0) |
| 3578 | return; |
| 3579 | |
| 3580 | i = NULL((void*)0); |
| 3581 | if (has_show_text_glyphs) { |
| 3582 | info.utf8 = utf8; |
| 3583 | info.utf8_len = utf8_len; |
| 3584 | info.clusters = clusters; |
| 3585 | info.num_clusters = num_clusters; |
| 3586 | info.cluster_flags = cluster_flags; |
| 3587 | i = &info; |
| 3588 | } |
| 3589 | |
| 3590 | status = cr->backend->glyphs (cr, glyphs, num_glyphs, i); |
| 3591 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 3592 | goto BAIL; |
| 3593 | |
| 3594 | last_glyph = &glyphs[num_glyphs - 1]; |
| 3595 | status = cr->backend->glyph_extents (cr, last_glyph, 1, &extents); |
| 3596 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 3597 | goto BAIL; |
| 3598 | |
| 3599 | x = last_glyph->x + extents.x_advance; |
| 3600 | y = last_glyph->y + extents.y_advance; |
| 3601 | cr->backend->move_to (cr, x, y); |
| 3602 | |
| 3603 | BAIL: |
| 3604 | if (glyphs != stack_glyphs) |
| 3605 | cairo_glyph_free_moz_cairo_glyph_free (glyphs); |
| 3606 | if (clusters != stack_clusters) |
| 3607 | cairo_text_cluster_free_moz_cairo_text_cluster_free (clusters); |
| 3608 | |
| 3609 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 3610 | _cairo_set_error (cr, status); |
| 3611 | } |
| 3612 | |
| 3613 | /** |
| 3614 | * cairo_show_glyphs: |
| 3615 | * @cr: a cairo context |
| 3616 | * @glyphs: array of glyphs to show |
| 3617 | * @num_glyphs: number of glyphs to show |
| 3618 | * |
| 3619 | * A drawing operator that generates the shape from an array of glyphs, |
| 3620 | * rendered according to the current font face, font size |
| 3621 | * (font matrix), and font options. |
| 3622 | * |
| 3623 | * Since: 1.0 |
| 3624 | **/ |
| 3625 | void |
| 3626 | cairo_show_glyphs_moz_cairo_show_glyphs (cairo_t *cr, const cairo_glyph_t *glyphs, int num_glyphs) |
| 3627 | { |
| 3628 | cairo_status_t status; |
| 3629 | |
| 3630 | if (unlikely (cr->status)(__builtin_expect (!!(cr->status), 0))) |
| 3631 | return; |
| 3632 | |
| 3633 | if (num_glyphs == 0) |
| 3634 | return; |
| 3635 | |
| 3636 | if (num_glyphs < 0) { |
| 3637 | _cairo_set_error (cr, CAIRO_STATUS_NEGATIVE_COUNT); |
| 3638 | return; |
| 3639 | } |
| 3640 | |
| 3641 | if (glyphs == NULL((void*)0)) { |
| 3642 | _cairo_set_error (cr, CAIRO_STATUS_NULL_POINTER); |
| 3643 | return; |
| 3644 | } |
| 3645 | |
| 3646 | status = cr->backend->glyphs (cr, glyphs, num_glyphs, NULL((void*)0)); |
| 3647 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 3648 | _cairo_set_error (cr, status); |
| 3649 | } |
| 3650 | |
| 3651 | /** |
| 3652 | * cairo_show_text_glyphs: |
| 3653 | * @cr: a cairo context |
| 3654 | * @utf8: a string of text encoded in UTF-8 |
| 3655 | * @utf8_len: length of @utf8 in bytes, or -1 if it is NUL-terminated |
| 3656 | * @glyphs: array of glyphs to show |
| 3657 | * @num_glyphs: number of glyphs to show |
| 3658 | * @clusters: array of cluster mapping information |
| 3659 | * @num_clusters: number of clusters in the mapping |
| 3660 | * @cluster_flags: cluster mapping flags |
| 3661 | * |
| 3662 | * This operation has rendering effects similar to cairo_show_glyphs() |
| 3663 | * but, if the target surface supports it, uses the provided text and |
| 3664 | * cluster mapping to embed the text for the glyphs shown in the output. |
| 3665 | * If the target does not support the extended attributes, this function |
| 3666 | * acts like the basic cairo_show_glyphs() as if it had been passed |
| 3667 | * @glyphs and @num_glyphs. |
| 3668 | * |
| 3669 | * The mapping between @utf8 and @glyphs is provided by an array of |
| 3670 | * <firstterm>clusters</firstterm>. Each cluster covers a number of |
| 3671 | * text bytes and glyphs, and neighboring clusters cover neighboring |
| 3672 | * areas of @utf8 and @glyphs. The clusters should collectively cover @utf8 |
| 3673 | * and @glyphs in entirety. |
| 3674 | * |
| 3675 | * The first cluster always covers bytes from the beginning of @utf8. |
| 3676 | * If @cluster_flags do not have the %CAIRO_TEXT_CLUSTER_FLAG_BACKWARD |
| 3677 | * set, the first cluster also covers the beginning |
| 3678 | * of @glyphs, otherwise it covers the end of the @glyphs array and |
| 3679 | * following clusters move backward. |
| 3680 | * |
| 3681 | * See #cairo_text_cluster_t for constraints on valid clusters. |
| 3682 | * |
| 3683 | * Since: 1.8 |
| 3684 | **/ |
| 3685 | void |
| 3686 | cairo_show_text_glyphs_moz_cairo_show_text_glyphs (cairo_t *cr, |
| 3687 | const char *utf8, |
| 3688 | int utf8_len, |
| 3689 | const cairo_glyph_t *glyphs, |
| 3690 | int num_glyphs, |
| 3691 | const cairo_text_cluster_t *clusters, |
| 3692 | int num_clusters, |
| 3693 | cairo_text_cluster_flags_t cluster_flags) |
| 3694 | { |
| 3695 | cairo_status_t status; |
| 3696 | |
| 3697 | if (unlikely (cr->status)(__builtin_expect (!!(cr->status), 0))) |
| 3698 | return; |
| 3699 | |
| 3700 | /* A slew of sanity checks */ |
| 3701 | |
| 3702 | /* Special case for NULL and -1 */ |
| 3703 | if (utf8 == NULL((void*)0) && utf8_len == -1) |
| 3704 | utf8_len = 0; |
| 3705 | |
| 3706 | /* No NULLs for non-zeros */ |
| 3707 | if ((num_glyphs && glyphs == NULL((void*)0)) || |
| 3708 | (utf8_len && utf8 == NULL((void*)0)) || |
| 3709 | (num_clusters && clusters == NULL((void*)0))) { |
| 3710 | _cairo_set_error (cr, CAIRO_STATUS_NULL_POINTER); |
| 3711 | return; |
| 3712 | } |
| 3713 | |
| 3714 | /* A -1 for utf8_len means NUL-terminated */ |
| 3715 | if (utf8_len == -1) |
| 3716 | utf8_len = strlen (utf8); |
| 3717 | |
| 3718 | /* Apart from that, no negatives */ |
| 3719 | if (num_glyphs < 0 || utf8_len < 0 || num_clusters < 0) { |
| 3720 | _cairo_set_error (cr, CAIRO_STATUS_NEGATIVE_COUNT); |
| 3721 | return; |
| 3722 | } |
| 3723 | |
| 3724 | if (num_glyphs == 0 && utf8_len == 0) |
| 3725 | return; |
| 3726 | |
| 3727 | if (utf8) { |
| 3728 | /* Make sure clusters cover the entire glyphs and utf8 arrays, |
| 3729 | * and that cluster boundaries are UTF-8 boundaries. */ |
| 3730 | status = _cairo_validate_text_clusters (utf8, utf8_len, |
| 3731 | glyphs, num_glyphs, |
| 3732 | clusters, num_clusters, cluster_flags); |
| 3733 | if (status == CAIRO_STATUS_INVALID_CLUSTERS) { |
| 3734 | /* Either got invalid UTF-8 text, or cluster mapping is bad. |
| 3735 | * Differentiate those. */ |
| 3736 | |
| 3737 | cairo_status_t status2; |
| 3738 | |
| 3739 | status2 = _cairo_utf8_to_ucs4 (utf8, utf8_len, NULL((void*)0), NULL((void*)0)); |
| 3740 | if (status2) |
| 3741 | status = status2; |
| 3742 | } else { |
| 3743 | cairo_glyph_text_info_t info; |
| 3744 | |
| 3745 | info.utf8 = utf8; |
| 3746 | info.utf8_len = utf8_len; |
| 3747 | info.clusters = clusters; |
| 3748 | info.num_clusters = num_clusters; |
| 3749 | info.cluster_flags = cluster_flags; |
| 3750 | |
| 3751 | status = cr->backend->glyphs (cr, glyphs, num_glyphs, &info); |
| 3752 | } |
| 3753 | } else { |
| 3754 | status = cr->backend->glyphs (cr, glyphs, num_glyphs, NULL((void*)0)); |
| 3755 | } |
| 3756 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 3757 | _cairo_set_error (cr, status); |
| 3758 | } |
| 3759 | |
| 3760 | /** |
| 3761 | * cairo_text_path: |
| 3762 | * @cr: a cairo context |
| 3763 | * @utf8: a NUL-terminated string of text encoded in UTF-8, or %NULL |
| 3764 | * |
| 3765 | * Adds closed paths for text to the current path. The generated |
| 3766 | * path if filled, achieves an effect similar to that of |
| 3767 | * cairo_show_text(). |
| 3768 | * |
| 3769 | * Text conversion and positioning is done similar to cairo_show_text(). |
| 3770 | * |
| 3771 | * Like cairo_show_text(), After this call the current point is |
| 3772 | * moved to the origin of where the next glyph would be placed in |
| 3773 | * this same progression. That is, the current point will be at |
| 3774 | * the origin of the final glyph offset by its advance values. |
| 3775 | * This allows for chaining multiple calls to to cairo_text_path() |
| 3776 | * without having to set current point in between. |
| 3777 | * |
| 3778 | * Note: The cairo_text_path() function call is part of what the cairo |
| 3779 | * designers call the "toy" text API. It is convenient for short demos |
| 3780 | * and simple programs, but it is not expected to be adequate for |
| 3781 | * serious text-using applications. See cairo_glyph_path() for the |
| 3782 | * "real" text path API in cairo. |
| 3783 | * |
| 3784 | * Since: 1.0 |
| 3785 | **/ |
| 3786 | void |
| 3787 | cairo_text_path_moz_cairo_text_path (cairo_t *cr, const char *utf8) |
| 3788 | { |
| 3789 | cairo_status_t status; |
| 3790 | cairo_text_extents_t extents; |
| 3791 | cairo_glyph_t stack_glyphs[CAIRO_STACK_ARRAY_LENGTH (cairo_glyph_t)((512 * sizeof (int)) / sizeof(cairo_glyph_t))]; |
| 3792 | cairo_glyph_t *glyphs, *last_glyph; |
| 3793 | cairo_scaled_font_t *scaled_font; |
| 3794 | int num_glyphs; |
| 3795 | double x, y; |
| 3796 | |
| 3797 | if (unlikely (cr->status)(__builtin_expect (!!(cr->status), 0))) |
| 3798 | return; |
| 3799 | |
| 3800 | if (utf8 == NULL((void*)0)) |
| 3801 | return; |
| 3802 | |
| 3803 | |
| 3804 | glyphs = stack_glyphs; |
| 3805 | num_glyphs = ARRAY_LENGTH (stack_glyphs)((int) (sizeof (stack_glyphs) / sizeof (stack_glyphs[0]))); |
| 3806 | |
| 3807 | scaled_font = cairo_get_scaled_font_moz_cairo_get_scaled_font (cr); |
| 3808 | if (unlikely (scaled_font->status)(__builtin_expect (!!(scaled_font->status), 0))) { |
| 3809 | _cairo_set_error (cr, scaled_font->status); |
| 3810 | return; |
| 3811 | } |
| 3812 | |
| 3813 | cairo_get_current_point_moz_cairo_get_current_point (cr, &x, &y); |
| 3814 | status = cairo_scaled_font_text_to_glyphs_moz_cairo_scaled_font_text_to_glyphs (scaled_font, |
Value stored to 'status' is never read | |
| 3815 | x, y, |
| 3816 | utf8, -1, |
| 3817 | &glyphs, &num_glyphs, |
| 3818 | NULL((void*)0), NULL((void*)0), NULL((void*)0)); |
| 3819 | |
| 3820 | if (num_glyphs == 0) |
| 3821 | return; |
| 3822 | |
| 3823 | status = cr->backend->glyph_path (cr, glyphs, num_glyphs); |
| 3824 | |
| 3825 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 3826 | goto BAIL; |
| 3827 | |
| 3828 | last_glyph = &glyphs[num_glyphs - 1]; |
| 3829 | status = cr->backend->glyph_extents (cr, last_glyph, 1, &extents); |
| 3830 | |
| 3831 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 3832 | goto BAIL; |
| 3833 | |
| 3834 | x = last_glyph->x + extents.x_advance; |
| 3835 | y = last_glyph->y + extents.y_advance; |
| 3836 | cr->backend->move_to (cr, x, y); |
| 3837 | |
| 3838 | BAIL: |
| 3839 | if (glyphs != stack_glyphs) |
| 3840 | cairo_glyph_free_moz_cairo_glyph_free (glyphs); |
| 3841 | |
| 3842 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 3843 | _cairo_set_error (cr, status); |
| 3844 | } |
| 3845 | |
| 3846 | /** |
| 3847 | * cairo_glyph_path: |
| 3848 | * @cr: a cairo context |
| 3849 | * @glyphs: array of glyphs to show |
| 3850 | * @num_glyphs: number of glyphs to show |
| 3851 | * |
| 3852 | * Adds closed paths for the glyphs to the current path. The generated |
| 3853 | * path if filled, achieves an effect similar to that of |
| 3854 | * cairo_show_glyphs(). |
| 3855 | * |
| 3856 | * Since: 1.0 |
| 3857 | **/ |
| 3858 | void |
| 3859 | cairo_glyph_path_moz_cairo_glyph_path (cairo_t *cr, const cairo_glyph_t *glyphs, int num_glyphs) |
| 3860 | { |
| 3861 | cairo_status_t status; |
| 3862 | |
| 3863 | if (unlikely (cr->status)(__builtin_expect (!!(cr->status), 0))) |
| 3864 | return; |
| 3865 | |
| 3866 | if (num_glyphs == 0) |
| 3867 | return; |
| 3868 | |
| 3869 | if (unlikely (num_glyphs < 0)(__builtin_expect (!!(num_glyphs < 0), 0))) { |
| 3870 | _cairo_set_error (cr, CAIRO_STATUS_NEGATIVE_COUNT); |
| 3871 | return; |
| 3872 | } |
| 3873 | |
| 3874 | if (unlikely (glyphs == NULL)(__builtin_expect (!!(glyphs == ((void*)0)), 0))) { |
| 3875 | _cairo_set_error (cr, CAIRO_STATUS_NULL_POINTER); |
| 3876 | return; |
| 3877 | } |
| 3878 | |
| 3879 | status = cr->backend->glyph_path (cr, glyphs, num_glyphs); |
| 3880 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 3881 | _cairo_set_error (cr, status); |
| 3882 | } |
| 3883 | |
| 3884 | /** |
| 3885 | * cairo_get_operator: |
| 3886 | * @cr: a cairo context |
| 3887 | * |
| 3888 | * Gets the current compositing operator for a cairo context. |
| 3889 | * |
| 3890 | * Return value: the current compositing operator. |
| 3891 | * |
| 3892 | * Since: 1.0 |
| 3893 | **/ |
| 3894 | cairo_operator_t |
| 3895 | cairo_get_operator_moz_cairo_get_operator (cairo_t *cr) |
| 3896 | { |
| 3897 | if (unlikely (cr->status)(__builtin_expect (!!(cr->status), 0))) |
| 3898 | return CAIRO_GSTATE_OPERATOR_DEFAULTCAIRO_OPERATOR_OVER; |
| 3899 | |
| 3900 | return cr->backend->get_operator (cr); |
| 3901 | } |
| 3902 | |
| 3903 | #if 0 |
| 3904 | /* |
| 3905 | * cairo_get_opacity: |
| 3906 | * @cr: a cairo context |
| 3907 | * |
| 3908 | * Gets the current compositing opacity for a cairo context. |
| 3909 | * |
| 3910 | * Return value: the current compositing opacity. |
| 3911 | * |
| 3912 | * Since: TBD |
| 3913 | **/ |
| 3914 | double |
| 3915 | cairo_get_opacity (cairo_t *cr) |
| 3916 | { |
| 3917 | if (unlikely (cr->status)(__builtin_expect (!!(cr->status), 0))) |
| 3918 | return 1.; |
| 3919 | |
| 3920 | return cr->backend->get_opacity (cr); |
| 3921 | } |
| 3922 | #endif |
| 3923 | |
| 3924 | /** |
| 3925 | * cairo_get_tolerance: |
| 3926 | * @cr: a cairo context |
| 3927 | * |
| 3928 | * Gets the current tolerance value, as set by cairo_set_tolerance(). |
| 3929 | * |
| 3930 | * Return value: the current tolerance value. |
| 3931 | * |
| 3932 | * Since: 1.0 |
| 3933 | **/ |
| 3934 | double |
| 3935 | cairo_get_tolerance_moz_cairo_get_tolerance (cairo_t *cr) |
| 3936 | { |
| 3937 | if (unlikely (cr->status)(__builtin_expect (!!(cr->status), 0))) |
| 3938 | return CAIRO_GSTATE_TOLERANCE_DEFAULT0.1; |
| 3939 | |
| 3940 | return cr->backend->get_tolerance (cr); |
| 3941 | } |
| 3942 | |
| 3943 | /** |
| 3944 | * cairo_get_antialias: |
| 3945 | * @cr: a cairo context |
| 3946 | * |
| 3947 | * Gets the current shape antialiasing mode, as set by |
| 3948 | * cairo_set_antialias(). |
| 3949 | * |
| 3950 | * Return value: the current shape antialiasing mode. |
| 3951 | * |
| 3952 | * Since: 1.0 |
| 3953 | **/ |
| 3954 | cairo_antialias_t |
| 3955 | cairo_get_antialias_moz_cairo_get_antialias (cairo_t *cr) |
| 3956 | { |
| 3957 | if (unlikely (cr->status)(__builtin_expect (!!(cr->status), 0))) |
| 3958 | return CAIRO_ANTIALIAS_DEFAULT; |
| 3959 | |
| 3960 | return cr->backend->get_antialias (cr); |
| 3961 | } |
| 3962 | |
| 3963 | /** |
| 3964 | * cairo_has_current_point: |
| 3965 | * @cr: a cairo context |
| 3966 | * |
| 3967 | * Returns whether a current point is defined on the current path. |
| 3968 | * See cairo_get_current_point() for details on the current point. |
| 3969 | * |
| 3970 | * Return value: whether a current point is defined. |
| 3971 | * |
| 3972 | * Since: 1.6 |
| 3973 | **/ |
| 3974 | cairo_bool_t |
| 3975 | cairo_has_current_point_moz_cairo_has_current_point (cairo_t *cr) |
| 3976 | { |
| 3977 | if (unlikely (cr->status)(__builtin_expect (!!(cr->status), 0))) |
| 3978 | return FALSE0; |
| 3979 | |
| 3980 | return cr->backend->has_current_point (cr); |
| 3981 | } |
| 3982 | |
| 3983 | /** |
| 3984 | * cairo_get_current_point: |
| 3985 | * @cr: a cairo context |
| 3986 | * @x: return value for X coordinate of the current point |
| 3987 | * @y: return value for Y coordinate of the current point |
| 3988 | * |
| 3989 | * Gets the current point of the current path, which is |
| 3990 | * conceptually the final point reached by the path so far. |
| 3991 | * |
| 3992 | * The current point is returned in the user-space coordinate |
| 3993 | * system. If there is no defined current point or if @cr is in an |
| 3994 | * error status, @x and @y will both be set to 0.0. It is possible to |
| 3995 | * check this in advance with cairo_has_current_point(). |
| 3996 | * |
| 3997 | * Most path construction functions alter the current point. See the |
| 3998 | * following for details on how they affect the current point: |
| 3999 | * cairo_new_path(), cairo_new_sub_path(), |
| 4000 | * cairo_append_path(), cairo_close_path(), |
| 4001 | * cairo_move_to(), cairo_line_to(), cairo_curve_to(), |
| 4002 | * cairo_rel_move_to(), cairo_rel_line_to(), cairo_rel_curve_to(), |
| 4003 | * cairo_arc(), cairo_arc_negative(), cairo_rectangle(), |
| 4004 | * cairo_text_path(), cairo_glyph_path(). |
| 4005 | * |
| 4006 | * Some functions use and alter the current point but do not |
| 4007 | * otherwise change current path: |
| 4008 | * cairo_show_text(). |
| 4009 | * |
| 4010 | * Some functions unset the current path and as a result, current point: |
| 4011 | * cairo_fill(), cairo_stroke(). |
| 4012 | * |
| 4013 | * Since: 1.0 |
| 4014 | **/ |
| 4015 | void |
| 4016 | cairo_get_current_point_moz_cairo_get_current_point (cairo_t *cr, double *x_ret, double *y_ret) |
| 4017 | { |
| 4018 | double x, y; |
| 4019 | |
| 4020 | x = y = 0; |
| 4021 | if (cr->status == CAIRO_STATUS_SUCCESS && |
| 4022 | cr->backend->has_current_point (cr)) |
| 4023 | { |
| 4024 | cr->backend->get_current_point (cr, &x, &y); |
| 4025 | } |
| 4026 | |
| 4027 | if (x_ret) |
| 4028 | *x_ret = x; |
| 4029 | if (y_ret) |
| 4030 | *y_ret = y; |
| 4031 | } |
| 4032 | |
| 4033 | /** |
| 4034 | * cairo_get_fill_rule: |
| 4035 | * @cr: a cairo context |
| 4036 | * |
| 4037 | * Gets the current fill rule, as set by cairo_set_fill_rule(). |
| 4038 | * |
| 4039 | * Return value: the current fill rule. |
| 4040 | * |
| 4041 | * Since: 1.0 |
| 4042 | **/ |
| 4043 | cairo_fill_rule_t |
| 4044 | cairo_get_fill_rule_moz_cairo_get_fill_rule (cairo_t *cr) |
| 4045 | { |
| 4046 | if (unlikely (cr->status)(__builtin_expect (!!(cr->status), 0))) |
| 4047 | return CAIRO_GSTATE_FILL_RULE_DEFAULTCAIRO_FILL_RULE_WINDING; |
| 4048 | |
| 4049 | return cr->backend->get_fill_rule (cr); |
| 4050 | } |
| 4051 | |
| 4052 | /** |
| 4053 | * cairo_get_line_width: |
| 4054 | * @cr: a cairo context |
| 4055 | * |
| 4056 | * This function returns the current line width value exactly as set by |
| 4057 | * cairo_set_line_width(). Note that the value is unchanged even if |
| 4058 | * the CTM has changed between the calls to cairo_set_line_width() and |
| 4059 | * cairo_get_line_width(). |
| 4060 | * |
| 4061 | * Return value: the current line width. |
| 4062 | * |
| 4063 | * Since: 1.0 |
| 4064 | **/ |
| 4065 | double |
| 4066 | cairo_get_line_width_moz_cairo_get_line_width (cairo_t *cr) |
| 4067 | { |
| 4068 | if (unlikely (cr->status)(__builtin_expect (!!(cr->status), 0))) |
| 4069 | return CAIRO_GSTATE_LINE_WIDTH_DEFAULT2.0; |
| 4070 | |
| 4071 | return cr->backend->get_line_width (cr); |
| 4072 | } |
| 4073 | |
| 4074 | /** |
| 4075 | * cairo_get_hairline: |
| 4076 | * @cr: a cairo context |
| 4077 | * |
| 4078 | * Returns whether or not hairline mode is set, as set by cairo_set_hairline(). |
| 4079 | * |
| 4080 | * Return value: whether hairline mode is set. |
| 4081 | * |
| 4082 | * Since: 1.18 |
| 4083 | **/ |
| 4084 | cairo_bool_t |
| 4085 | cairo_get_hairline (cairo_t *cr) |
| 4086 | { |
| 4087 | if (unlikely (cr->status)(__builtin_expect (!!(cr->status), 0))) |
| 4088 | return FALSE0; |
| 4089 | |
| 4090 | return cr->backend->get_hairline (cr); |
| 4091 | } |
| 4092 | |
| 4093 | /** |
| 4094 | * cairo_get_line_cap: |
| 4095 | * @cr: a cairo context |
| 4096 | * |
| 4097 | * Gets the current line cap style, as set by cairo_set_line_cap(). |
| 4098 | * |
| 4099 | * Return value: the current line cap style. |
| 4100 | * |
| 4101 | * Since: 1.0 |
| 4102 | **/ |
| 4103 | cairo_line_cap_t |
| 4104 | cairo_get_line_cap_moz_cairo_get_line_cap (cairo_t *cr) |
| 4105 | { |
| 4106 | if (unlikely (cr->status)(__builtin_expect (!!(cr->status), 0))) |
| 4107 | return CAIRO_GSTATE_LINE_CAP_DEFAULTCAIRO_LINE_CAP_BUTT; |
| 4108 | |
| 4109 | return cr->backend->get_line_cap (cr); |
| 4110 | } |
| 4111 | |
| 4112 | /** |
| 4113 | * cairo_get_line_join: |
| 4114 | * @cr: a cairo context |
| 4115 | * |
| 4116 | * Gets the current line join style, as set by cairo_set_line_join(). |
| 4117 | * |
| 4118 | * Return value: the current line join style. |
| 4119 | * |
| 4120 | * Since: 1.0 |
| 4121 | **/ |
| 4122 | cairo_line_join_t |
| 4123 | cairo_get_line_join_moz_cairo_get_line_join (cairo_t *cr) |
| 4124 | { |
| 4125 | if (unlikely (cr->status)(__builtin_expect (!!(cr->status), 0))) |
| 4126 | return CAIRO_GSTATE_LINE_JOIN_DEFAULTCAIRO_LINE_JOIN_MITER; |
| 4127 | |
| 4128 | return cr->backend->get_line_join (cr); |
| 4129 | } |
| 4130 | |
| 4131 | /** |
| 4132 | * cairo_get_miter_limit: |
| 4133 | * @cr: a cairo context |
| 4134 | * |
| 4135 | * Gets the current miter limit, as set by cairo_set_miter_limit(). |
| 4136 | * |
| 4137 | * Return value: the current miter limit. |
| 4138 | * |
| 4139 | * Since: 1.0 |
| 4140 | **/ |
| 4141 | double |
| 4142 | cairo_get_miter_limit_moz_cairo_get_miter_limit (cairo_t *cr) |
| 4143 | { |
| 4144 | if (unlikely (cr->status)(__builtin_expect (!!(cr->status), 0))) |
| 4145 | return CAIRO_GSTATE_MITER_LIMIT_DEFAULT10.0; |
| 4146 | |
| 4147 | return cr->backend->get_miter_limit (cr); |
| 4148 | } |
| 4149 | |
| 4150 | /** |
| 4151 | * cairo_get_matrix: |
| 4152 | * @cr: a cairo context |
| 4153 | * @matrix: return value for the matrix |
| 4154 | * |
| 4155 | * Stores the current transformation matrix (CTM) into @matrix. |
| 4156 | * |
| 4157 | * Since: 1.0 |
| 4158 | **/ |
| 4159 | void |
| 4160 | cairo_get_matrix_moz_cairo_get_matrix (cairo_t *cr, cairo_matrix_t *matrix) |
| 4161 | { |
| 4162 | if (unlikely (cr->status)(__builtin_expect (!!(cr->status), 0))) { |
| 4163 | cairo_matrix_init_identity_moz_cairo_matrix_init_identity (matrix); |
| 4164 | return; |
| 4165 | } |
| 4166 | |
| 4167 | cr->backend->get_matrix (cr, matrix); |
| 4168 | } |
| 4169 | |
| 4170 | /** |
| 4171 | * cairo_get_target: |
| 4172 | * @cr: a cairo context |
| 4173 | * |
| 4174 | * Gets the target surface for the cairo context as passed to |
| 4175 | * cairo_create(). |
| 4176 | * |
| 4177 | * This function will always return a valid pointer, but the result |
| 4178 | * can be a "nil" surface if @cr is already in an error state, |
| 4179 | * (ie. cairo_status() <literal>!=</literal> %CAIRO_STATUS_SUCCESS). |
| 4180 | * A nil surface is indicated by cairo_surface_status() |
| 4181 | * <literal>!=</literal> %CAIRO_STATUS_SUCCESS. |
| 4182 | * |
| 4183 | * Return value: the target surface. This object is owned by cairo. To |
| 4184 | * keep a reference to it, you must call cairo_surface_reference(). |
| 4185 | * |
| 4186 | * Since: 1.0 |
| 4187 | **/ |
| 4188 | cairo_surface_t * |
| 4189 | cairo_get_target_moz_cairo_get_target (cairo_t *cr) |
| 4190 | { |
| 4191 | if (unlikely (cr->status)(__builtin_expect (!!(cr->status), 0))) |
| 4192 | return _cairo_surface_create_in_error (cr->status); |
| 4193 | |
| 4194 | return cr->backend->get_original_target (cr); |
| 4195 | } |
| 4196 | |
| 4197 | /** |
| 4198 | * cairo_get_group_target: |
| 4199 | * @cr: a cairo context |
| 4200 | * |
| 4201 | * Gets the current destination surface for the context. This is either |
| 4202 | * the original target surface as passed to cairo_create() or the target |
| 4203 | * surface for the current group as started by the most recent call to |
| 4204 | * cairo_push_group() or cairo_push_group_with_content(). |
| 4205 | * |
| 4206 | * This function will always return a valid pointer, but the result |
| 4207 | * can be a "nil" surface if @cr is already in an error state, |
| 4208 | * (ie. cairo_status() <literal>!=</literal> %CAIRO_STATUS_SUCCESS). |
| 4209 | * A nil surface is indicated by cairo_surface_status() |
| 4210 | * <literal>!=</literal> %CAIRO_STATUS_SUCCESS. |
| 4211 | * |
| 4212 | * Return value: the target surface. This object is owned by cairo. To |
| 4213 | * keep a reference to it, you must call cairo_surface_reference(). |
| 4214 | * |
| 4215 | * Since: 1.2 |
| 4216 | **/ |
| 4217 | cairo_surface_t * |
| 4218 | cairo_get_group_target_moz_cairo_get_group_target (cairo_t *cr) |
| 4219 | { |
| 4220 | if (unlikely (cr->status)(__builtin_expect (!!(cr->status), 0))) |
| 4221 | return _cairo_surface_create_in_error (cr->status); |
| 4222 | |
| 4223 | return cr->backend->get_current_target (cr); |
| 4224 | } |
| 4225 | |
| 4226 | /** |
| 4227 | * cairo_copy_path: |
| 4228 | * @cr: a cairo context |
| 4229 | * |
| 4230 | * Creates a copy of the current path and returns it to the user as a |
| 4231 | * #cairo_path_t. See #cairo_path_data_t for hints on how to iterate |
| 4232 | * over the returned data structure. |
| 4233 | * |
| 4234 | * This function will always return a valid pointer, but the result |
| 4235 | * will have no data (<literal>data==%NULL</literal> and |
| 4236 | * <literal>num_data==0</literal>), if either of the following |
| 4237 | * conditions hold: |
| 4238 | * |
| 4239 | * <orderedlist> |
| 4240 | * <listitem>If there is insufficient memory to copy the path. In this |
| 4241 | * case <literal>path->status</literal> will be set to |
| 4242 | * %CAIRO_STATUS_NO_MEMORY.</listitem> |
| 4243 | * <listitem>If @cr is already in an error state. In this case |
| 4244 | * <literal>path->status</literal> will contain the same status that |
| 4245 | * would be returned by cairo_status().</listitem> |
| 4246 | * </orderedlist> |
| 4247 | * |
| 4248 | * Return value: the copy of the current path. The caller owns the |
| 4249 | * returned object and should call cairo_path_destroy() when finished |
| 4250 | * with it. |
| 4251 | * |
| 4252 | * Since: 1.0 |
| 4253 | **/ |
| 4254 | cairo_path_t * |
| 4255 | cairo_copy_path_moz_cairo_copy_path (cairo_t *cr) |
| 4256 | { |
| 4257 | if (unlikely (cr->status)(__builtin_expect (!!(cr->status), 0))) |
| 4258 | return _cairo_path_create_in_error (cr->status); |
| 4259 | |
| 4260 | return cr->backend->copy_path (cr); |
| 4261 | } |
| 4262 | |
| 4263 | /** |
| 4264 | * cairo_copy_path_flat: |
| 4265 | * @cr: a cairo context |
| 4266 | * |
| 4267 | * Gets a flattened copy of the current path and returns it to the |
| 4268 | * user as a #cairo_path_t. See #cairo_path_data_t for hints on |
| 4269 | * how to iterate over the returned data structure. |
| 4270 | * |
| 4271 | * This function is like cairo_copy_path() except that any curves |
| 4272 | * in the path will be approximated with piecewise-linear |
| 4273 | * approximations, (accurate to within the current tolerance |
| 4274 | * value). That is, the result is guaranteed to not have any elements |
| 4275 | * of type %CAIRO_PATH_CURVE_TO which will instead be replaced by a |
| 4276 | * series of %CAIRO_PATH_LINE_TO elements. |
| 4277 | * |
| 4278 | * This function will always return a valid pointer, but the result |
| 4279 | * will have no data (<literal>data==%NULL</literal> and |
| 4280 | * <literal>num_data==0</literal>), if either of the following |
| 4281 | * conditions hold: |
| 4282 | * |
| 4283 | * <orderedlist> |
| 4284 | * <listitem>If there is insufficient memory to copy the path. In this |
| 4285 | * case <literal>path->status</literal> will be set to |
| 4286 | * %CAIRO_STATUS_NO_MEMORY.</listitem> |
| 4287 | * <listitem>If @cr is already in an error state. In this case |
| 4288 | * <literal>path->status</literal> will contain the same status that |
| 4289 | * would be returned by cairo_status().</listitem> |
| 4290 | * </orderedlist> |
| 4291 | * |
| 4292 | * Return value: the copy of the current path. The caller owns the |
| 4293 | * returned object and should call cairo_path_destroy() when finished |
| 4294 | * with it. |
| 4295 | * |
| 4296 | * Since: 1.0 |
| 4297 | **/ |
| 4298 | cairo_path_t * |
| 4299 | cairo_copy_path_flat_moz_cairo_copy_path_flat (cairo_t *cr) |
| 4300 | { |
| 4301 | if (unlikely (cr->status)(__builtin_expect (!!(cr->status), 0))) |
| 4302 | return _cairo_path_create_in_error (cr->status); |
| 4303 | |
| 4304 | return cr->backend->copy_path_flat (cr); |
| 4305 | } |
| 4306 | |
| 4307 | /** |
| 4308 | * cairo_append_path: |
| 4309 | * @cr: a cairo context |
| 4310 | * @path: path to be appended |
| 4311 | * |
| 4312 | * Append the @path onto the current path. The @path may be either the |
| 4313 | * return value from one of cairo_copy_path() or |
| 4314 | * cairo_copy_path_flat() or it may be constructed manually. See |
| 4315 | * #cairo_path_t for details on how the path data structure should be |
| 4316 | * initialized, and note that <literal>path->status</literal> must be |
| 4317 | * initialized to %CAIRO_STATUS_SUCCESS. |
| 4318 | * |
| 4319 | * Since: 1.0 |
| 4320 | **/ |
| 4321 | void |
| 4322 | cairo_append_path_moz_cairo_append_path (cairo_t *cr, |
| 4323 | const cairo_path_t *path) |
| 4324 | { |
| 4325 | cairo_status_t status; |
| 4326 | |
| 4327 | if (unlikely (cr->status)(__builtin_expect (!!(cr->status), 0))) |
| 4328 | return; |
| 4329 | |
| 4330 | if (unlikely (path == NULL)(__builtin_expect (!!(path == ((void*)0)), 0))) { |
| 4331 | _cairo_set_error (cr, CAIRO_STATUS_NULL_POINTER); |
| 4332 | return; |
| 4333 | } |
| 4334 | |
| 4335 | if (unlikely (path->status)(__builtin_expect (!!(path->status), 0))) { |
| 4336 | if (path->status > CAIRO_STATUS_SUCCESS && |
| 4337 | path->status <= CAIRO_STATUS_LAST_STATUS) |
| 4338 | _cairo_set_error (cr, path->status); |
| 4339 | else |
| 4340 | _cairo_set_error (cr, CAIRO_STATUS_INVALID_STATUS); |
| 4341 | return; |
| 4342 | } |
| 4343 | |
| 4344 | if (path->num_data == 0) |
| 4345 | return; |
| 4346 | |
| 4347 | if (unlikely (path->data == NULL)(__builtin_expect (!!(path->data == ((void*)0)), 0))) { |
| 4348 | _cairo_set_error (cr, CAIRO_STATUS_NULL_POINTER); |
| 4349 | return; |
| 4350 | } |
| 4351 | |
| 4352 | status = cr->backend->append_path (cr, path); |
| 4353 | if (unlikely (status)(__builtin_expect (!!(status), 0))) |
| 4354 | _cairo_set_error (cr, status); |
| 4355 | } |
| 4356 | |
| 4357 | /** |
| 4358 | * cairo_status: |
| 4359 | * @cr: a cairo context |
| 4360 | * |
| 4361 | * Checks whether an error has previously occurred for this context. |
| 4362 | * |
| 4363 | * Returns: the current status of this context, see #cairo_status_t |
| 4364 | * |
| 4365 | * Since: 1.0 |
| 4366 | **/ |
| 4367 | cairo_status_t |
| 4368 | cairo_status_moz_cairo_status (cairo_t *cr) |
| 4369 | { |
| 4370 | return cr->status; |
| 4371 | } |