1 /* cairo - a vector graphics library with display and print output
2 *
3 * Copyright © 2005 Red Hat, Inc.
4 *
5 * This library is free software; you can redistribute it and/or
6 * modify it either under the terms of the GNU Lesser General Public
7 * License version 2.1 as published by the Free Software Foundation
8 * (the "LGPL") or, at your option, under the terms of the Mozilla
9 * Public License Version 1.1 (the "MPL"). If you do not alter this
10 * notice, a recipient may use your version of this file under either
11 * the MPL or the LGPL.
12 *
13 * You should have received a copy of the LGPL along with this library
14 * in the file COPYING-LGPL-2.1; if not, write to the Free Software
15 * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
16 * You should have received a copy of the MPL along with this library
17 * in the file COPYING-MPL-1.1
18 *
19 * The contents of this file are subject to the Mozilla Public License
20 * Version 1.1 (the "License"); you may not use this file except in
21 * compliance with the License. You may obtain a copy of the License at
22 * http://www.mozilla.org/MPL/
23 *
24 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
25 * OF ANY KIND, either express or implied. See the LGPL or the MPL for
26 * the specific language governing rights and limitations.
27 *
28 * The Original Code is the cairo graphics library.
29 *
30 * The Initial Developer of the Original Code is Red Hat, Inc.
31 *
32 * Contributor(s):
33 * Carl D. Worth <cworth@redhat.com>
34 */
35
36 #ifndef CAIRO_GSTATE_PRIVATE_H
37 #define CAIRO_GSTATE_PRIVATE_H
38
39 #include "cairo-clip-private.h"
40
41 struct _cairo_gstate {
42 cairo_operator_t op;
43
44 double opacity;
45 double tolerance;
46 cairo_antialias_t antialias;
47
48 cairo_stroke_style_t stroke_style;
49
50 cairo_fill_rule_t fill_rule;
51
52 cairo_font_face_t *font_face;
53 cairo_scaled_font_t *scaled_font; /* Specific to the current CTM */
54 cairo_scaled_font_t *previous_scaled_font; /* holdover */
55 cairo_matrix_t font_matrix;
56 cairo_font_options_t font_options;
57
58 cairo_clip_t *clip;
59
60 cairo_surface_t *target; /* The target to which all rendering is directed */
61 cairo_surface_t *parent_target; /* The previous target which was receiving rendering */
62 cairo_surface_t *original_target; /* The original target the initial gstate was created with */
63
64 /* the user is allowed to update the device after we have cached the matrices... */
65 cairo_observer_t device_transform_observer;
66
67 cairo_matrix_t ctm;
68 cairo_matrix_t ctm_inverse;
69 cairo_matrix_t source_ctm_inverse; /* At the time ->source was set */
70 cairo_bool_t is_identity;
71
72 cairo_pattern_t *source;
73
74 struct _cairo_gstate *next;
75 };
76
77 /* cairo-gstate.c */
78 cairo_private cairo_status_t
79 _cairo_gstate_init (cairo_gstate_t *gstate,
80 cairo_surface_t *target);
81
82 cairo_private void
83 _cairo_gstate_fini (cairo_gstate_t *gstate);
84
85 cairo_private cairo_status_t
86 _cairo_gstate_save (cairo_gstate_t **gstate, cairo_gstate_t **freelist);
87
88 cairo_private cairo_status_t
89 _cairo_gstate_restore (cairo_gstate_t **gstate, cairo_gstate_t **freelist);
90
91 cairo_private cairo_bool_t
92 _cairo_gstate_is_group (cairo_gstate_t *gstate);
93
94 cairo_private cairo_status_t
95 _cairo_gstate_redirect_target (cairo_gstate_t *gstate, cairo_surface_t *child);
96
97 cairo_private cairo_surface_t *
98 _cairo_gstate_get_target (cairo_gstate_t *gstate);
99
100 cairo_private cairo_surface_t *
101 _cairo_gstate_get_original_target (cairo_gstate_t *gstate);
102
103 cairo_private cairo_clip_t *
104 _cairo_gstate_get_clip (cairo_gstate_t *gstate);
105
106 cairo_private cairo_status_t
107 _cairo_gstate_set_source (cairo_gstate_t *gstate, cairo_pattern_t *source);
108
109 cairo_private cairo_pattern_t *
110 _cairo_gstate_get_source (cairo_gstate_t *gstate);
111
112 cairo_private cairo_status_t
113 _cairo_gstate_set_operator (cairo_gstate_t *gstate, cairo_operator_t op);
114
115 cairo_private cairo_operator_t
116 _cairo_gstate_get_operator (cairo_gstate_t *gstate);
117
118 cairo_private cairo_status_t
119 _cairo_gstate_set_opacity (cairo_gstate_t *gstate, double opacity);
120
121 cairo_private double
122 _cairo_gstate_get_opacity (cairo_gstate_t *gstate);
123
124 cairo_private cairo_status_t
125 _cairo_gstate_set_tolerance (cairo_gstate_t *gstate, double tolerance);
126
127 cairo_private double
128 _cairo_gstate_get_tolerance (cairo_gstate_t *gstate);
129
130 cairo_private cairo_status_t
131 _cairo_gstate_set_fill_rule (cairo_gstate_t *gstate, cairo_fill_rule_t fill_rule);
132
133 cairo_private cairo_fill_rule_t
134 _cairo_gstate_get_fill_rule (cairo_gstate_t *gstate);
135
136 cairo_private cairo_status_t
137 _cairo_gstate_set_line_width (cairo_gstate_t *gstate, double width);
138
139 cairo_private double
140 _cairo_gstate_get_line_width (cairo_gstate_t *gstate);
141
142 cairo_private cairo_status_t
143 _cairo_gstate_set_line_cap (cairo_gstate_t *gstate, cairo_line_cap_t line_cap);
144
145 cairo_private cairo_line_cap_t
146 _cairo_gstate_get_line_cap (cairo_gstate_t *gstate);
147
148 cairo_private cairo_status_t
149 _cairo_gstate_set_line_join (cairo_gstate_t *gstate, cairo_line_join_t line_join);
150
151 cairo_private cairo_line_join_t
152 _cairo_gstate_get_line_join (cairo_gstate_t *gstate);
153
154 cairo_private cairo_status_t
155 _cairo_gstate_set_dash (cairo_gstate_t *gstate, const double *dash, int num_dashes, double offset);
156
157 cairo_private void
158 _cairo_gstate_get_dash (cairo_gstate_t *gstate, double *dash, int *num_dashes, double *offset);
159
160 cairo_private cairo_status_t
161 _cairo_gstate_set_miter_limit (cairo_gstate_t *gstate, double limit);
162
163 cairo_private double
164 _cairo_gstate_get_miter_limit (cairo_gstate_t *gstate);
165
166 cairo_private void
167 _cairo_gstate_get_matrix (cairo_gstate_t *gstate, cairo_matrix_t *matrix);
168
169 cairo_private cairo_status_t
170 _cairo_gstate_translate (cairo_gstate_t *gstate, double tx, double ty);
171
172 cairo_private cairo_status_t
173 _cairo_gstate_scale (cairo_gstate_t *gstate, double sx, double sy);
174
175 cairo_private cairo_status_t
176 _cairo_gstate_rotate (cairo_gstate_t *gstate, double angle);
177
178 cairo_private cairo_status_t
179 _cairo_gstate_transform (cairo_gstate_t *gstate,
180 const cairo_matrix_t *matrix);
181
182 cairo_private cairo_status_t
183 _cairo_gstate_set_matrix (cairo_gstate_t *gstate,
184 const cairo_matrix_t *matrix);
185
186 cairo_private void
187 _cairo_gstate_identity_matrix (cairo_gstate_t *gstate);
188
189 cairo_private void
190 _cairo_gstate_user_to_device (cairo_gstate_t *gstate, double *x, double *y);
191
192 cairo_private void
193 _cairo_gstate_user_to_device_distance (cairo_gstate_t *gstate, double *dx, double *dy);
194
195 cairo_private void
196 _cairo_gstate_device_to_user (cairo_gstate_t *gstate, double *x, double *y);
197
198 cairo_private void
199 _cairo_gstate_device_to_user_distance (cairo_gstate_t *gstate, double *dx, double *dy);
200
201 cairo_private void
202 _do_cairo_gstate_user_to_backend (cairo_gstate_t *gstate, double *x, double *y);
203
204 static inline void
_cairo_gstate_user_to_backend(cairo_gstate_t * gstate,double * x,double * y)205 _cairo_gstate_user_to_backend (cairo_gstate_t *gstate, double *x, double *y)
206 {
207 if (! gstate->is_identity)
208 _do_cairo_gstate_user_to_backend (gstate, x, y);
209 }
210
211 cairo_private void
212 _do_cairo_gstate_user_to_backend_distance (cairo_gstate_t *gstate, double *x, double *y);
213
214 static inline void
_cairo_gstate_user_to_backend_distance(cairo_gstate_t * gstate,double * x,double * y)215 _cairo_gstate_user_to_backend_distance (cairo_gstate_t *gstate, double *x, double *y)
216 {
217 if (! gstate->is_identity)
218 _do_cairo_gstate_user_to_backend_distance (gstate, x, y);
219 }
220
221 cairo_private void
222 _do_cairo_gstate_backend_to_user (cairo_gstate_t *gstate, double *x, double *y);
223
224 static inline void
_cairo_gstate_backend_to_user(cairo_gstate_t * gstate,double * x,double * y)225 _cairo_gstate_backend_to_user (cairo_gstate_t *gstate, double *x, double *y)
226 {
227 if (! gstate->is_identity)
228 _do_cairo_gstate_backend_to_user (gstate, x, y);
229 }
230
231 cairo_private void
232 _do_cairo_gstate_backend_to_user_distance (cairo_gstate_t *gstate, double *x, double *y);
233
234 static inline void
_cairo_gstate_backend_to_user_distance(cairo_gstate_t * gstate,double * x,double * y)235 _cairo_gstate_backend_to_user_distance (cairo_gstate_t *gstate, double *x, double *y)
236 {
237 if (! gstate->is_identity)
238 _do_cairo_gstate_backend_to_user_distance (gstate, x, y);
239 }
240
241 cairo_private void
242 _cairo_gstate_backend_to_user_rectangle (cairo_gstate_t *gstate,
243 double *x1, double *y1,
244 double *x2, double *y2,
245 cairo_bool_t *is_tight);
246
247 cairo_private void
248 _cairo_gstate_path_extents (cairo_gstate_t *gstate,
249 cairo_path_fixed_t *path,
250 double *x1, double *y1,
251 double *x2, double *y2);
252
253 cairo_private cairo_status_t
254 _cairo_gstate_paint (cairo_gstate_t *gstate);
255
256 cairo_private cairo_status_t
257 _cairo_gstate_mask (cairo_gstate_t *gstate,
258 cairo_pattern_t *mask);
259
260 cairo_private cairo_status_t
261 _cairo_gstate_stroke (cairo_gstate_t *gstate, cairo_path_fixed_t *path);
262
263 cairo_private cairo_status_t
264 _cairo_gstate_fill (cairo_gstate_t *gstate, cairo_path_fixed_t *path);
265
266 cairo_private cairo_status_t
267 _cairo_gstate_copy_page (cairo_gstate_t *gstate);
268
269 cairo_private cairo_status_t
270 _cairo_gstate_show_page (cairo_gstate_t *gstate);
271
272 cairo_private cairo_status_t
273 _cairo_gstate_stroke_extents (cairo_gstate_t *gstate,
274 cairo_path_fixed_t *path,
275 double *x1, double *y1,
276 double *x2, double *y2);
277
278 cairo_private cairo_status_t
279 _cairo_gstate_fill_extents (cairo_gstate_t *gstate,
280 cairo_path_fixed_t *path,
281 double *x1, double *y1,
282 double *x2, double *y2);
283
284 cairo_private cairo_status_t
285 _cairo_gstate_in_stroke (cairo_gstate_t *gstate,
286 cairo_path_fixed_t *path,
287 double x,
288 double y,
289 cairo_bool_t *inside_ret);
290
291 cairo_private cairo_bool_t
292 _cairo_gstate_in_fill (cairo_gstate_t *gstate,
293 cairo_path_fixed_t *path,
294 double x,
295 double y);
296
297 cairo_private cairo_bool_t
298 _cairo_gstate_in_clip (cairo_gstate_t *gstate,
299 double x,
300 double y);
301
302 cairo_private cairo_status_t
303 _cairo_gstate_clip (cairo_gstate_t *gstate, cairo_path_fixed_t *path);
304
305 cairo_private cairo_status_t
306 _cairo_gstate_reset_clip (cairo_gstate_t *gstate);
307
308 cairo_private cairo_bool_t
309 _cairo_gstate_clip_extents (cairo_gstate_t *gstate,
310 double *x1,
311 double *y1,
312 double *x2,
313 double *y2);
314
315 cairo_private cairo_rectangle_list_t*
316 _cairo_gstate_copy_clip_rectangle_list (cairo_gstate_t *gstate);
317
318 cairo_private cairo_status_t
319 _cairo_gstate_show_surface (cairo_gstate_t *gstate,
320 cairo_surface_t *surface,
321 double x,
322 double y,
323 double width,
324 double height);
325
326 cairo_private cairo_status_t
327 _cairo_gstate_tag_begin (cairo_gstate_t *gstate,
328 const char *tag_name,
329 const char *attributes);
330
331 cairo_private cairo_status_t
332 _cairo_gstate_tag_end (cairo_gstate_t *gstate,
333 const char *tag_name);
334
335 cairo_private cairo_status_t
336 _cairo_gstate_set_font_size (cairo_gstate_t *gstate,
337 double size);
338
339 cairo_private void
340 _cairo_gstate_get_font_matrix (cairo_gstate_t *gstate,
341 cairo_matrix_t *matrix);
342
343 cairo_private cairo_status_t
344 _cairo_gstate_set_font_matrix (cairo_gstate_t *gstate,
345 const cairo_matrix_t *matrix);
346
347 cairo_private void
348 _cairo_gstate_get_font_options (cairo_gstate_t *gstate,
349 cairo_font_options_t *options);
350
351 cairo_private void
352 _cairo_gstate_set_font_options (cairo_gstate_t *gstate,
353 const cairo_font_options_t *options);
354
355 cairo_private cairo_status_t
356 _cairo_gstate_get_font_face (cairo_gstate_t *gstate,
357 cairo_font_face_t **font_face);
358
359 cairo_private cairo_status_t
360 _cairo_gstate_get_scaled_font (cairo_gstate_t *gstate,
361 cairo_scaled_font_t **scaled_font);
362
363 cairo_private cairo_status_t
364 _cairo_gstate_get_font_extents (cairo_gstate_t *gstate,
365 cairo_font_extents_t *extents);
366
367 cairo_private cairo_status_t
368 _cairo_gstate_set_font_face (cairo_gstate_t *gstate,
369 cairo_font_face_t *font_face);
370
371 cairo_private cairo_status_t
372 _cairo_gstate_glyph_extents (cairo_gstate_t *gstate,
373 const cairo_glyph_t *glyphs,
374 int num_glyphs,
375 cairo_text_extents_t *extents);
376
377 cairo_private cairo_status_t
378 _cairo_gstate_show_text_glyphs (cairo_gstate_t *gstate,
379 const cairo_glyph_t *glyphs,
380 int num_glyphs,
381 cairo_glyph_text_info_t *info);
382
383 cairo_private cairo_status_t
384 _cairo_gstate_glyph_path (cairo_gstate_t *gstate,
385 const cairo_glyph_t *glyphs,
386 int num_glyphs,
387 cairo_path_fixed_t *path);
388
389 cairo_private cairo_status_t
390 _cairo_gstate_set_antialias (cairo_gstate_t *gstate,
391 cairo_antialias_t antialias);
392
393 cairo_private cairo_antialias_t
394 _cairo_gstate_get_antialias (cairo_gstate_t *gstate);
395
396 #endif /* CAIRO_GSTATE_PRIVATE_H */
397