source/libs/cairo/cairo-src/src/cairo-gstate-private.h

   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
 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
 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
 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
 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_set_font_size (cairo_gstate_t *gstate,
 328                              double          size);
 329
 330 cairo_private void
 331 _cairo_gstate_get_font_matrix (cairo_gstate_t *gstate,
 332                                cairo_matrix_t *matrix);
 333
 334 cairo_private cairo_status_t
 335 _cairo_gstate_set_font_matrix (cairo_gstate_t       *gstate,
 336                                const cairo_matrix_t *matrix);
 337
 338 cairo_private void
 339 _cairo_gstate_get_font_options (cairo_gstate_t       *gstate,
 340                                 cairo_font_options_t *options);
 341
 342 cairo_private void
 343 _cairo_gstate_set_font_options (cairo_gstate_t             *gstate,
 344                                 const cairo_font_options_t *options);
 345
 346 cairo_private cairo_status_t
 347 _cairo_gstate_get_font_face (cairo_gstate_t     *gstate,
 348                              cairo_font_face_t **font_face);
 349
 350 cairo_private cairo_status_t
 351 _cairo_gstate_get_scaled_font (cairo_gstate_t       *gstate,
 352                                cairo_scaled_font_t **scaled_font);
 353
 354 cairo_private cairo_status_t
 355 _cairo_gstate_get_font_extents (cairo_gstate_t *gstate,
 356                                 cairo_font_extents_t *extents);
 357
 358 cairo_private cairo_status_t
 359 _cairo_gstate_set_font_face (cairo_gstate_t    *gstate,
 360                              cairo_font_face_t *font_face);
 361
 362 cairo_private cairo_status_t
 363 _cairo_gstate_glyph_extents (cairo_gstate_t *gstate,
 364                              const cairo_glyph_t *glyphs,
 365                              int num_glyphs,
 366                              cairo_text_extents_t *extents);
 367
 368 cairo_private cairo_status_t
 369 _cairo_gstate_show_text_glyphs (cairo_gstate_t             *gstate,
 370                                 const cairo_glyph_t        *glyphs,
 371                                 int                         num_glyphs,
 372                                 cairo_glyph_text_info_t    *info);
 373
 374 cairo_private cairo_status_t
 375 _cairo_gstate_glyph_path (cairo_gstate_t      *gstate,
 376                           const cairo_glyph_t *glyphs,
 377                           int                  num_glyphs,
 378                           cairo_path_fixed_t  *path);
 379
 380 cairo_private cairo_status_t
 381 _cairo_gstate_set_antialias (cairo_gstate_t *gstate,
 382                              cairo_antialias_t antialias);
 383
 384 cairo_private cairo_antialias_t
 385 _cairo_gstate_get_antialias (cairo_gstate_t *gstate);
 386
 387 #endif /* CAIRO_GSTATE_PRIVATE_H */