1 | /* GTK - The GIMP Toolkit |
2 | * Copyright (C) 2010 Carlos Garnacho <carlosg@gnome.org> |
3 | * |
4 | * This library is free software; you can redistribute it and/or |
5 | * modify it under the terms of the GNU Lesser General Public |
6 | * License as published by the Free Software Foundation; either |
7 | * version 2 of the License, or (at your option) any later version. |
8 | * |
9 | * This library is distributed in the hope that it will be useful, |
10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
12 | * Lesser General Public License for more details. |
13 | * |
14 | * You should have received a copy of the GNU Lesser General Public |
15 | * License along with this library. If not, see <http://www.gnu.org/licenses/>. |
16 | */ |
17 | |
18 | #include "config.h" |
19 | |
20 | #include "gtkcssproviderprivate.h" |
21 | |
22 | #include <gtk/css/gtkcss.h> |
23 | #include "gtk/css/gtkcsstokenizerprivate.h" |
24 | #include "gtk/css/gtkcssparserprivate.h" |
25 | #include "gtkbitmaskprivate.h" |
26 | #include "gtkcssarrayvalueprivate.h" |
27 | #include "gtkcsscolorvalueprivate.h" |
28 | #include "gtkcsskeyframesprivate.h" |
29 | #include "gtkcssselectorprivate.h" |
30 | #include "gtkcssshorthandpropertyprivate.h" |
31 | #include "gtksettingsprivate.h" |
32 | #include "gtkstyleprovider.h" |
33 | #include "gtkstylepropertyprivate.h" |
34 | #include "gtkstyleproviderprivate.h" |
35 | #include "gtkmarshalers.h" |
36 | #include "gtkprivate.h" |
37 | #include "gtkintl.h" |
38 | #include "gtkversion.h" |
39 | |
40 | #include <string.h> |
41 | #include <stdlib.h> |
42 | |
43 | #include <gdk-pixbuf/gdk-pixbuf.h> |
44 | #include "gdk/gdkprofilerprivate.h" |
45 | #include <cairo-gobject.h> |
46 | |
47 | #define GDK_ARRAY_NAME gtk_css_selectors |
48 | #define GDK_ARRAY_TYPE_NAME GtkCssSelectors |
49 | #define GDK_ARRAY_ELEMENT_TYPE GtkCssSelector * |
50 | #define GDK_ARRAY_PREALLOC 64 |
51 | #include "gdk/gdkarrayimpl.c" |
52 | |
53 | /** |
54 | * GtkCssProvider: |
55 | * |
56 | * `GtkCssProvider` is an object implementing the `GtkStyleProvider` interface |
57 | * for CSS. |
58 | * |
59 | * It is able to parse CSS-like input in order to style widgets. |
60 | * |
61 | * An application can make GTK parse a specific CSS style sheet by calling |
62 | * [method@Gtk.CssProvider.load_from_file] or |
63 | * [method@Gtk.CssProvider.load_from_resource] |
64 | * and adding the provider with [method@Gtk.StyleContext.add_provider] or |
65 | * [func@Gtk.StyleContext.add_provider_for_display]. |
66 | |
67 | * In addition, certain files will be read when GTK is initialized. |
68 | * First, the file `$XDG_CONFIG_HOME/gtk-4.0/gtk.css` is loaded if it |
69 | * exists. Then, GTK loads the first existing file among |
70 | * `XDG_DATA_HOME/themes/THEME/gtk-VERSION/gtk-VARIANT.css`, |
71 | * `$HOME/.themes/THEME/gtk-VERSION/gtk-VARIANT.css`, |
72 | * `$XDG_DATA_DIRS/themes/THEME/gtk-VERSION/gtk-VARIANT.css` and |
73 | * `DATADIR/share/themes/THEME/gtk-VERSION/gtk-VARIANT.css`, |
74 | * where `THEME` is the name of the current theme (see the |
75 | * [property@Gtk.Settings:gtk-theme-name] setting), `VARIANT` is the |
76 | * variant to load (see the |
77 | * [property@Gtk.Settings:gtk-application-prefer-dark-theme] setting), |
78 | * `DATADIR` is the prefix configured when GTK was compiled (unless |
79 | * overridden by the `GTK_DATA_PREFIX` environment variable), and |
80 | * `VERSION` is the GTK version number. If no file is found for the |
81 | * current version, GTK tries older versions all the way back to 4.0. |
82 | * |
83 | * To track errors while loading CSS, connect to the |
84 | * [signal@Gtk.CssProvider::parsing-error] signal. |
85 | */ |
86 | |
87 | #define MAX_SELECTOR_LIST_LENGTH 64 |
88 | |
89 | struct _GtkCssProviderClass |
90 | { |
91 | GObjectClass parent_class; |
92 | |
93 | void (* parsing_error) (GtkCssProvider *provider, |
94 | GtkCssSection *section, |
95 | const GError * error); |
96 | }; |
97 | |
98 | typedef struct GtkCssRuleset GtkCssRuleset; |
99 | typedef struct _GtkCssScanner GtkCssScanner; |
100 | typedef struct _PropertyValue PropertyValue; |
101 | typedef enum ParserScope ParserScope; |
102 | typedef enum ParserSymbol ParserSymbol; |
103 | |
104 | struct _PropertyValue { |
105 | GtkCssStyleProperty *property; |
106 | GtkCssValue *value; |
107 | GtkCssSection *section; |
108 | }; |
109 | |
110 | struct GtkCssRuleset |
111 | { |
112 | GtkCssSelector *selector; |
113 | GtkCssSelectorTree *selector_match; |
114 | PropertyValue *styles; |
115 | guint n_styles; |
116 | guint owns_styles : 1; |
117 | }; |
118 | |
119 | struct _GtkCssScanner |
120 | { |
121 | GtkCssProvider *provider; |
122 | GtkCssParser *parser; |
123 | GtkCssScanner *parent; |
124 | }; |
125 | |
126 | struct _GtkCssProviderPrivate |
127 | { |
128 | GScanner *scanner; |
129 | |
130 | GHashTable *symbolic_colors; |
131 | GHashTable *keyframes; |
132 | |
133 | GArray *rulesets; |
134 | GtkCssSelectorTree *tree; |
135 | GResource *resource; |
136 | char *path; |
137 | }; |
138 | |
139 | enum { |
140 | PARSING_ERROR, |
141 | LAST_SIGNAL |
142 | }; |
143 | |
144 | static gboolean gtk_keep_css_sections = FALSE; |
145 | |
146 | static guint css_provider_signals[LAST_SIGNAL] = { 0 }; |
147 | |
148 | static void gtk_css_provider_finalize (GObject *object); |
149 | static void gtk_css_style_provider_iface_init (GtkStyleProviderInterface *iface); |
150 | static void gtk_css_style_provider_emit_error (GtkStyleProvider *provider, |
151 | GtkCssSection *section, |
152 | const GError *error); |
153 | |
154 | static void |
155 | gtk_css_provider_load_internal (GtkCssProvider *css_provider, |
156 | GtkCssScanner *scanner, |
157 | GFile *file, |
158 | GBytes *bytes); |
159 | |
160 | G_DEFINE_TYPE_EXTENDED (GtkCssProvider, gtk_css_provider, G_TYPE_OBJECT, 0, |
161 | G_ADD_PRIVATE (GtkCssProvider) |
162 | G_IMPLEMENT_INTERFACE (GTK_TYPE_STYLE_PROVIDER, |
163 | gtk_css_style_provider_iface_init)); |
164 | |
165 | static void |
166 | gtk_css_provider_parsing_error (GtkCssProvider *provider, |
167 | GtkCssSection *section, |
168 | const GError *error) |
169 | { |
170 | /* Only emit a warning when we have no error handlers. This is our |
171 | * default handlers. And in this case erroneous CSS files are a bug |
172 | * and should be fixed. |
173 | * Note that these warnings can also be triggered by a broken theme |
174 | * that people installed from some weird location on the internets. |
175 | */ |
176 | if (!g_signal_has_handler_pending (instance: provider, |
177 | signal_id: css_provider_signals[PARSING_ERROR], |
178 | detail: 0, |
179 | TRUE)) |
180 | { |
181 | char *s = gtk_css_section_to_string (section); |
182 | |
183 | g_warning ("Theme parser %s: %s: %s" , |
184 | error->domain == GTK_CSS_PARSER_WARNING ? "warning" : "error" , |
185 | s, |
186 | error->message); |
187 | |
188 | g_free (mem: s); |
189 | } |
190 | } |
191 | |
192 | /* This is exported privately for use in GtkInspector. |
193 | * It is the callers responsibility to reparse the current theme. |
194 | */ |
195 | void |
196 | gtk_css_provider_set_keep_css_sections (void) |
197 | { |
198 | gtk_keep_css_sections = TRUE; |
199 | } |
200 | |
201 | static void |
202 | gtk_css_provider_class_init (GtkCssProviderClass *klass) |
203 | { |
204 | GObjectClass *object_class = G_OBJECT_CLASS (klass); |
205 | |
206 | if (g_getenv (variable: "GTK_CSS_DEBUG" )) |
207 | gtk_css_provider_set_keep_css_sections (); |
208 | |
209 | /** |
210 | * GtkCssProvider::parsing-error: |
211 | * @provider: the provider that had a parsing error |
212 | * @section: section the error happened in |
213 | * @error: The parsing error |
214 | * |
215 | * Signals that a parsing error occurred. |
216 | * |
217 | * The @path, @line and @position describe the actual location of |
218 | * the error as accurately as possible. |
219 | * |
220 | * Parsing errors are never fatal, so the parsing will resume after |
221 | * the error. Errors may however cause parts of the given data or |
222 | * even all of it to not be parsed at all. So it is a useful idea |
223 | * to check that the parsing succeeds by connecting to this signal. |
224 | * |
225 | * Note that this signal may be emitted at any time as the css provider |
226 | * may opt to defer parsing parts or all of the input to a later time |
227 | * than when a loading function was called. |
228 | */ |
229 | css_provider_signals[PARSING_ERROR] = |
230 | g_signal_new (I_("parsing-error" ), |
231 | G_TYPE_FROM_CLASS (object_class), |
232 | signal_flags: G_SIGNAL_RUN_LAST, |
233 | G_STRUCT_OFFSET (GtkCssProviderClass, parsing_error), |
234 | NULL, NULL, |
235 | c_marshaller: _gtk_marshal_VOID__BOXED_BOXED, |
236 | G_TYPE_NONE, n_params: 2, GTK_TYPE_CSS_SECTION, G_TYPE_ERROR); |
237 | |
238 | object_class->finalize = gtk_css_provider_finalize; |
239 | |
240 | klass->parsing_error = gtk_css_provider_parsing_error; |
241 | } |
242 | |
243 | static void |
244 | gtk_css_ruleset_init_copy (GtkCssRuleset *new, |
245 | GtkCssRuleset *ruleset, |
246 | GtkCssSelector *selector) |
247 | { |
248 | memcpy (dest: new, src: ruleset, n: sizeof (GtkCssRuleset)); |
249 | |
250 | new->selector = selector; |
251 | /* First copy takes over ownership */ |
252 | if (ruleset->owns_styles) |
253 | ruleset->owns_styles = FALSE; |
254 | } |
255 | |
256 | static void |
257 | gtk_css_ruleset_clear (GtkCssRuleset *ruleset) |
258 | { |
259 | if (ruleset->owns_styles) |
260 | { |
261 | guint i; |
262 | |
263 | for (i = 0; i < ruleset->n_styles; i++) |
264 | { |
265 | _gtk_css_value_unref (value: ruleset->styles[i].value); |
266 | ruleset->styles[i].value = NULL; |
267 | if (ruleset->styles[i].section) |
268 | gtk_css_section_unref (section: ruleset->styles[i].section); |
269 | } |
270 | g_free (mem: ruleset->styles); |
271 | } |
272 | if (ruleset->selector) |
273 | _gtk_css_selector_free (selector: ruleset->selector); |
274 | |
275 | memset (s: ruleset, c: 0, n: sizeof (GtkCssRuleset)); |
276 | } |
277 | |
278 | static void |
279 | gtk_css_ruleset_add (GtkCssRuleset *ruleset, |
280 | GtkCssStyleProperty *property, |
281 | GtkCssValue *value, |
282 | GtkCssSection *section) |
283 | { |
284 | guint i; |
285 | |
286 | g_return_if_fail (ruleset->owns_styles || ruleset->n_styles == 0); |
287 | |
288 | ruleset->owns_styles = TRUE; |
289 | |
290 | for (i = 0; i < ruleset->n_styles; i++) |
291 | { |
292 | if (ruleset->styles[i].property == property) |
293 | { |
294 | _gtk_css_value_unref (value: ruleset->styles[i].value); |
295 | ruleset->styles[i].value = NULL; |
296 | if (ruleset->styles[i].section) |
297 | gtk_css_section_unref (section: ruleset->styles[i].section); |
298 | break; |
299 | } |
300 | } |
301 | if (i == ruleset->n_styles) |
302 | { |
303 | ruleset->n_styles++; |
304 | ruleset->styles = g_realloc (mem: ruleset->styles, n_bytes: ruleset->n_styles * sizeof (PropertyValue)); |
305 | ruleset->styles[i].value = NULL; |
306 | ruleset->styles[i].property = property; |
307 | } |
308 | |
309 | ruleset->styles[i].value = value; |
310 | if (gtk_keep_css_sections) |
311 | ruleset->styles[i].section = gtk_css_section_ref (section); |
312 | else |
313 | ruleset->styles[i].section = NULL; |
314 | } |
315 | |
316 | static void |
317 | gtk_css_scanner_destroy (GtkCssScanner *scanner) |
318 | { |
319 | g_object_unref (object: scanner->provider); |
320 | gtk_css_parser_unref (self: scanner->parser); |
321 | |
322 | g_slice_free (GtkCssScanner, scanner); |
323 | } |
324 | |
325 | static void |
326 | gtk_css_style_provider_emit_error (GtkStyleProvider *provider, |
327 | GtkCssSection *section, |
328 | const GError *error) |
329 | { |
330 | g_signal_emit (instance: provider, signal_id: css_provider_signals[PARSING_ERROR], detail: 0, section, error); |
331 | } |
332 | |
333 | static void |
334 | gtk_css_scanner_parser_error (GtkCssParser *parser, |
335 | const GtkCssLocation *start, |
336 | const GtkCssLocation *end, |
337 | const GError *error, |
338 | gpointer user_data) |
339 | { |
340 | GtkCssScanner *scanner = user_data; |
341 | GtkCssSection *section; |
342 | |
343 | section = gtk_css_section_new (file: gtk_css_parser_get_file (self: parser), |
344 | start, |
345 | end); |
346 | |
347 | gtk_css_style_provider_emit_error (GTK_STYLE_PROVIDER (scanner->provider), section, error); |
348 | |
349 | gtk_css_section_unref (section); |
350 | } |
351 | |
352 | static GtkCssScanner * |
353 | gtk_css_scanner_new (GtkCssProvider *provider, |
354 | GtkCssScanner *parent, |
355 | GFile *file, |
356 | GBytes *bytes) |
357 | { |
358 | GtkCssScanner *scanner; |
359 | |
360 | scanner = g_slice_new0 (GtkCssScanner); |
361 | |
362 | g_object_ref (provider); |
363 | scanner->provider = provider; |
364 | scanner->parent = parent; |
365 | |
366 | scanner->parser = gtk_css_parser_new_for_bytes (bytes, |
367 | file, |
368 | error_func: gtk_css_scanner_parser_error, |
369 | user_data: scanner, |
370 | NULL); |
371 | |
372 | return scanner; |
373 | } |
374 | |
375 | static gboolean |
376 | gtk_css_scanner_would_recurse (GtkCssScanner *scanner, |
377 | GFile *file) |
378 | { |
379 | while (scanner) |
380 | { |
381 | GFile *parser_file = gtk_css_parser_get_file (self: scanner->parser); |
382 | if (parser_file && g_file_equal (file1: parser_file, file2: file)) |
383 | return TRUE; |
384 | |
385 | scanner = scanner->parent; |
386 | } |
387 | |
388 | return FALSE; |
389 | } |
390 | |
391 | static void |
392 | gtk_css_provider_init (GtkCssProvider *css_provider) |
393 | { |
394 | GtkCssProviderPrivate *priv = gtk_css_provider_get_instance_private (self: css_provider); |
395 | |
396 | priv->rulesets = g_array_new (FALSE, FALSE, element_size: sizeof (GtkCssRuleset)); |
397 | |
398 | priv->symbolic_colors = g_hash_table_new_full (hash_func: g_str_hash, key_equal_func: g_str_equal, |
399 | key_destroy_func: (GDestroyNotify) g_free, |
400 | value_destroy_func: (GDestroyNotify) _gtk_css_value_unref); |
401 | priv->keyframes = g_hash_table_new_full (hash_func: g_str_hash, key_equal_func: g_str_equal, |
402 | key_destroy_func: (GDestroyNotify) g_free, |
403 | value_destroy_func: (GDestroyNotify) _gtk_css_keyframes_unref); |
404 | } |
405 | |
406 | static void |
407 | verify_tree_match_results (GtkCssProvider *provider, |
408 | GtkCssNode *node, |
409 | GtkCssSelectorMatches *tree_rules) |
410 | { |
411 | #ifdef VERIFY_TREE |
412 | GtkCssProviderPrivate *priv = gtk_css_provider_get_instance_private (provider); |
413 | GtkCssRuleset *ruleset; |
414 | gboolean should_match; |
415 | int i, j; |
416 | |
417 | for (i = 0; i < priv->rulesets->len; i++) |
418 | { |
419 | gboolean found = FALSE; |
420 | |
421 | ruleset = &g_array_index (priv->rulesets, GtkCssRuleset, i); |
422 | |
423 | for (j = 0; j < gtk_css_selector_matches_get_size (tree_rules); j++) |
424 | { |
425 | if (ruleset == gtk_css_selector_matches_get (tree_rules, j)) |
426 | { |
427 | found = TRUE; |
428 | break; |
429 | } |
430 | } |
431 | should_match = gtk_css_selector_matches (ruleset->selector, node); |
432 | if (found != !!should_match) |
433 | { |
434 | g_error ("expected rule '%s' to %s, but it %s" , |
435 | _gtk_css_selector_to_string (ruleset->selector), |
436 | should_match ? "match" : "not match" , |
437 | found ? "matched" : "didn't match" ); |
438 | } |
439 | } |
440 | #endif |
441 | } |
442 | |
443 | static GtkCssValue * |
444 | gtk_css_style_provider_get_color (GtkStyleProvider *provider, |
445 | const char *name) |
446 | { |
447 | GtkCssProvider *css_provider = GTK_CSS_PROVIDER (provider); |
448 | GtkCssProviderPrivate *priv = gtk_css_provider_get_instance_private (self: css_provider); |
449 | |
450 | return g_hash_table_lookup (hash_table: priv->symbolic_colors, key: name); |
451 | } |
452 | |
453 | static GtkCssKeyframes * |
454 | gtk_css_style_provider_get_keyframes (GtkStyleProvider *provider, |
455 | const char *name) |
456 | { |
457 | GtkCssProvider *css_provider = GTK_CSS_PROVIDER (provider); |
458 | GtkCssProviderPrivate *priv = gtk_css_provider_get_instance_private (self: css_provider); |
459 | |
460 | return g_hash_table_lookup (hash_table: priv->keyframes, key: name); |
461 | } |
462 | |
463 | static void |
464 | gtk_css_style_provider_lookup (GtkStyleProvider *provider, |
465 | const GtkCountingBloomFilter *filter, |
466 | GtkCssNode *node, |
467 | GtkCssLookup *lookup, |
468 | GtkCssChange *change) |
469 | { |
470 | GtkCssProvider *css_provider = GTK_CSS_PROVIDER (provider); |
471 | GtkCssProviderPrivate *priv = gtk_css_provider_get_instance_private (self: css_provider); |
472 | GtkCssRuleset *ruleset; |
473 | guint j; |
474 | int i; |
475 | GtkCssSelectorMatches tree_rules; |
476 | |
477 | if (_gtk_css_selector_tree_is_empty (tree: priv->tree)) |
478 | return; |
479 | |
480 | gtk_css_selector_matches_init (self: &tree_rules); |
481 | _gtk_css_selector_tree_match_all (tree: priv->tree, filter, node, out_tree_rules: &tree_rules); |
482 | |
483 | if (!gtk_css_selector_matches_is_empty (self: &tree_rules)) |
484 | { |
485 | verify_tree_match_results (provider: css_provider, node, tree_rules: &tree_rules); |
486 | |
487 | for (i = gtk_css_selector_matches_get_size (self: &tree_rules) - 1; i >= 0; i--) |
488 | { |
489 | ruleset = gtk_css_selector_matches_get (self: &tree_rules, pos: i); |
490 | |
491 | if (ruleset->styles == NULL) |
492 | continue; |
493 | |
494 | for (j = 0; j < ruleset->n_styles; j++) |
495 | { |
496 | GtkCssStyleProperty *prop = ruleset->styles[j].property; |
497 | guint id = _gtk_css_style_property_get_id (property: prop); |
498 | |
499 | if (!_gtk_css_lookup_is_missing (lookup, id)) |
500 | continue; |
501 | |
502 | _gtk_css_lookup_set (lookup, |
503 | id, |
504 | section: ruleset->styles[j].section, |
505 | value: ruleset->styles[j].value); |
506 | } |
507 | } |
508 | } |
509 | gtk_css_selector_matches_clear (self: &tree_rules); |
510 | |
511 | if (change) |
512 | *change = gtk_css_selector_tree_get_change_all (tree: priv->tree, filter, node); |
513 | } |
514 | |
515 | static void |
516 | gtk_css_style_provider_iface_init (GtkStyleProviderInterface *iface) |
517 | { |
518 | iface->get_color = gtk_css_style_provider_get_color; |
519 | iface->get_keyframes = gtk_css_style_provider_get_keyframes; |
520 | iface->lookup = gtk_css_style_provider_lookup; |
521 | iface->emit_error = gtk_css_style_provider_emit_error; |
522 | } |
523 | |
524 | static void |
525 | gtk_css_provider_finalize (GObject *object) |
526 | { |
527 | GtkCssProvider *css_provider = GTK_CSS_PROVIDER (object); |
528 | GtkCssProviderPrivate *priv = gtk_css_provider_get_instance_private (self: css_provider); |
529 | guint i; |
530 | |
531 | for (i = 0; i < priv->rulesets->len; i++) |
532 | gtk_css_ruleset_clear (ruleset: &g_array_index (priv->rulesets, GtkCssRuleset, i)); |
533 | |
534 | g_array_free (array: priv->rulesets, TRUE); |
535 | _gtk_css_selector_tree_free (tree: priv->tree); |
536 | |
537 | g_hash_table_destroy (hash_table: priv->symbolic_colors); |
538 | g_hash_table_destroy (hash_table: priv->keyframes); |
539 | |
540 | if (priv->resource) |
541 | { |
542 | g_resources_unregister (resource: priv->resource); |
543 | g_resource_unref (resource: priv->resource); |
544 | priv->resource = NULL; |
545 | } |
546 | |
547 | g_free (mem: priv->path); |
548 | |
549 | G_OBJECT_CLASS (gtk_css_provider_parent_class)->finalize (object); |
550 | } |
551 | |
552 | /** |
553 | * gtk_css_provider_new: |
554 | * |
555 | * Returns a newly created `GtkCssProvider`. |
556 | * |
557 | * Returns: A new `GtkCssProvider` |
558 | */ |
559 | GtkCssProvider * |
560 | gtk_css_provider_new (void) |
561 | { |
562 | return g_object_new (GTK_TYPE_CSS_PROVIDER, NULL); |
563 | } |
564 | |
565 | static void |
566 | css_provider_commit (GtkCssProvider *css_provider, |
567 | GtkCssSelectors *selectors, |
568 | GtkCssRuleset *ruleset) |
569 | { |
570 | GtkCssProviderPrivate *priv = gtk_css_provider_get_instance_private (self: css_provider); |
571 | guint i; |
572 | |
573 | if (ruleset->styles == NULL) |
574 | { |
575 | for (i = 0; i < gtk_css_selectors_get_size (self: selectors); i++) |
576 | _gtk_css_selector_free (selector: gtk_css_selectors_get (self: selectors, pos: i)); |
577 | return; |
578 | } |
579 | |
580 | for (i = 0; i < gtk_css_selectors_get_size (self: selectors); i++) |
581 | { |
582 | GtkCssRuleset *new; |
583 | |
584 | g_array_set_size (array: priv->rulesets, length: priv->rulesets->len + 1); |
585 | |
586 | new = &g_array_index (priv->rulesets, GtkCssRuleset, priv->rulesets->len - 1); |
587 | gtk_css_ruleset_init_copy (new, ruleset, selector: gtk_css_selectors_get (self: selectors, pos: i)); |
588 | } |
589 | } |
590 | |
591 | static void |
592 | gtk_css_provider_reset (GtkCssProvider *css_provider) |
593 | { |
594 | GtkCssProviderPrivate *priv = gtk_css_provider_get_instance_private (self: css_provider); |
595 | guint i; |
596 | |
597 | if (priv->resource) |
598 | { |
599 | g_resources_unregister (resource: priv->resource); |
600 | g_resource_unref (resource: priv->resource); |
601 | priv->resource = NULL; |
602 | } |
603 | |
604 | if (priv->path) |
605 | { |
606 | g_free (mem: priv->path); |
607 | priv->path = NULL; |
608 | } |
609 | |
610 | g_hash_table_remove_all (hash_table: priv->symbolic_colors); |
611 | g_hash_table_remove_all (hash_table: priv->keyframes); |
612 | |
613 | for (i = 0; i < priv->rulesets->len; i++) |
614 | gtk_css_ruleset_clear (ruleset: &g_array_index (priv->rulesets, GtkCssRuleset, i)); |
615 | g_array_set_size (array: priv->rulesets, length: 0); |
616 | _gtk_css_selector_tree_free (tree: priv->tree); |
617 | priv->tree = NULL; |
618 | } |
619 | |
620 | static gboolean |
621 | parse_import (GtkCssScanner *scanner) |
622 | { |
623 | GFile *file; |
624 | |
625 | if (!gtk_css_parser_try_at_keyword (self: scanner->parser, keyword: "import" )) |
626 | return FALSE; |
627 | |
628 | if (gtk_css_parser_has_token (self: scanner->parser, token_type: GTK_CSS_TOKEN_STRING)) |
629 | { |
630 | char *url; |
631 | |
632 | url = gtk_css_parser_consume_string (self: scanner->parser); |
633 | if (url) |
634 | { |
635 | file = gtk_css_parser_resolve_url (self: scanner->parser, url); |
636 | if (file == NULL) |
637 | { |
638 | gtk_css_parser_error_import (self: scanner->parser, |
639 | format: "Could not resolve \"%s\" to a valid URL" , |
640 | url); |
641 | } |
642 | g_free (mem: url); |
643 | } |
644 | else |
645 | file = NULL; |
646 | } |
647 | else |
648 | { |
649 | char *url = gtk_css_parser_consume_url (self: scanner->parser); |
650 | if (url) |
651 | { |
652 | file = gtk_css_parser_resolve_url (self: scanner->parser, url); |
653 | g_free (mem: url); |
654 | } |
655 | else |
656 | file = NULL; |
657 | } |
658 | |
659 | if (file == NULL) |
660 | { |
661 | /* nothing to do */ |
662 | } |
663 | else if (!gtk_css_parser_has_token (self: scanner->parser, token_type: GTK_CSS_TOKEN_EOF)) |
664 | { |
665 | gtk_css_parser_error_syntax (self: scanner->parser, format: "Expected ';'" ); |
666 | } |
667 | else if (gtk_css_scanner_would_recurse (scanner, file)) |
668 | { |
669 | char *path = g_file_get_path (file); |
670 | gtk_css_parser_error (self: scanner->parser, |
671 | code: GTK_CSS_PARSER_ERROR_IMPORT, |
672 | start: gtk_css_parser_get_block_location (self: scanner->parser), |
673 | end: gtk_css_parser_get_end_location (self: scanner->parser), |
674 | format: "Loading '%s' would recurse" , |
675 | path); |
676 | g_free (mem: path); |
677 | } |
678 | else |
679 | { |
680 | gtk_css_provider_load_internal (css_provider: scanner->provider, |
681 | scanner, |
682 | file, |
683 | NULL); |
684 | } |
685 | |
686 | g_clear_object (&file); |
687 | |
688 | return TRUE; |
689 | } |
690 | |
691 | static gboolean |
692 | parse_color_definition (GtkCssScanner *scanner) |
693 | { |
694 | GtkCssProviderPrivate *priv = gtk_css_provider_get_instance_private (self: scanner->provider); |
695 | GtkCssValue *color; |
696 | char *name; |
697 | |
698 | if (!gtk_css_parser_try_at_keyword (self: scanner->parser, keyword: "define-color" )) |
699 | return FALSE; |
700 | |
701 | name = gtk_css_parser_consume_ident (self: scanner->parser); |
702 | if (name == NULL) |
703 | return TRUE; |
704 | |
705 | color = _gtk_css_color_value_parse (parser: scanner->parser); |
706 | if (color == NULL) |
707 | { |
708 | g_free (mem: name); |
709 | return TRUE; |
710 | } |
711 | |
712 | if (!gtk_css_parser_has_token (self: scanner->parser, token_type: GTK_CSS_TOKEN_EOF)) |
713 | { |
714 | g_free (mem: name); |
715 | _gtk_css_value_unref (value: color); |
716 | gtk_css_parser_error_syntax (self: scanner->parser, |
717 | format: "Missing semicolon at end of color definition" ); |
718 | return TRUE; |
719 | } |
720 | |
721 | g_hash_table_insert (hash_table: priv->symbolic_colors, key: name, value: color); |
722 | |
723 | return TRUE; |
724 | } |
725 | |
726 | static gboolean |
727 | parse_keyframes (GtkCssScanner *scanner) |
728 | { |
729 | GtkCssProviderPrivate *priv = gtk_css_provider_get_instance_private (self: scanner->provider); |
730 | GtkCssKeyframes *keyframes; |
731 | char *name; |
732 | |
733 | if (!gtk_css_parser_try_at_keyword (self: scanner->parser, keyword: "keyframes" )) |
734 | return FALSE; |
735 | |
736 | name = gtk_css_parser_consume_ident (self: scanner->parser); |
737 | if (name == NULL) |
738 | return FALSE; |
739 | |
740 | if (!gtk_css_parser_has_token (self: scanner->parser, token_type: GTK_CSS_TOKEN_EOF)) |
741 | { |
742 | gtk_css_parser_error_syntax (self: scanner->parser, format: "Expected '{' for keyframes" ); |
743 | return FALSE; |
744 | } |
745 | |
746 | gtk_css_parser_end_block_prelude (self: scanner->parser); |
747 | |
748 | keyframes = _gtk_css_keyframes_parse (parser: scanner->parser); |
749 | if (keyframes != NULL) |
750 | g_hash_table_insert (hash_table: priv->keyframes, key: name, value: keyframes); |
751 | |
752 | if (!gtk_css_parser_has_token (self: scanner->parser, token_type: GTK_CSS_TOKEN_EOF)) |
753 | gtk_css_parser_error_syntax (self: scanner->parser, format: "Expected '}' after declarations" ); |
754 | |
755 | return TRUE; |
756 | } |
757 | |
758 | static void |
759 | parse_at_keyword (GtkCssScanner *scanner) |
760 | { |
761 | gtk_css_parser_start_semicolon_block (self: scanner->parser, alternative_token: GTK_CSS_TOKEN_OPEN_CURLY); |
762 | |
763 | if (!parse_import (scanner) && |
764 | !parse_color_definition (scanner) && |
765 | !parse_keyframes (scanner)) |
766 | { |
767 | gtk_css_parser_error_syntax (self: scanner->parser, format: "Unknown @ rule" ); |
768 | } |
769 | |
770 | gtk_css_parser_end_block (self: scanner->parser); |
771 | } |
772 | |
773 | static void |
774 | parse_selector_list (GtkCssScanner *scanner, |
775 | GtkCssSelectors *selectors) |
776 | { |
777 | do { |
778 | GtkCssSelector *select = _gtk_css_selector_parse (parser: scanner->parser); |
779 | |
780 | if (select == NULL) |
781 | { |
782 | for (int i = 0; i < gtk_css_selectors_get_size (self: selectors); i++) |
783 | _gtk_css_selector_free (selector: gtk_css_selectors_get (self: selectors, pos: i)); |
784 | gtk_css_selectors_clear (self: selectors); |
785 | return; |
786 | } |
787 | |
788 | gtk_css_selectors_append (self: selectors, value: select); |
789 | } |
790 | while (gtk_css_parser_try_token (self: scanner->parser, token_type: GTK_CSS_TOKEN_COMMA)); |
791 | } |
792 | |
793 | static void |
794 | parse_declaration (GtkCssScanner *scanner, |
795 | GtkCssRuleset *ruleset) |
796 | { |
797 | GtkStyleProperty *property; |
798 | char *name; |
799 | |
800 | /* advance the location over whitespace */ |
801 | gtk_css_parser_get_token (self: scanner->parser); |
802 | gtk_css_parser_start_semicolon_block (self: scanner->parser, alternative_token: GTK_CSS_TOKEN_EOF); |
803 | |
804 | if (gtk_css_parser_has_token (self: scanner->parser, token_type: GTK_CSS_TOKEN_EOF)) |
805 | { |
806 | gtk_css_parser_warn_syntax (self: scanner->parser, format: "Empty declaration" ); |
807 | gtk_css_parser_end_block (self: scanner->parser); |
808 | return; |
809 | } |
810 | |
811 | name = gtk_css_parser_consume_ident (self: scanner->parser); |
812 | if (name == NULL) |
813 | goto out; |
814 | |
815 | property = _gtk_style_property_lookup (name); |
816 | |
817 | if (property) |
818 | { |
819 | GtkCssSection *section; |
820 | GtkCssValue *value; |
821 | |
822 | if (!gtk_css_parser_try_token (self: scanner->parser, token_type: GTK_CSS_TOKEN_COLON)) |
823 | { |
824 | gtk_css_parser_error_syntax (self: scanner->parser, format: "Expected ':'" ); |
825 | goto out; |
826 | } |
827 | |
828 | value = _gtk_style_property_parse_value (property, parser: scanner->parser); |
829 | |
830 | if (value == NULL) |
831 | goto out; |
832 | |
833 | if (!gtk_css_parser_has_token (self: scanner->parser, token_type: GTK_CSS_TOKEN_EOF)) |
834 | { |
835 | gtk_css_parser_error_syntax (self: scanner->parser, format: "Junk at end of value for %s" , property->name); |
836 | goto out; |
837 | } |
838 | |
839 | if (gtk_keep_css_sections) |
840 | { |
841 | section = gtk_css_section_new (file: gtk_css_parser_get_file (self: scanner->parser), |
842 | start: gtk_css_parser_get_block_location (self: scanner->parser), |
843 | end: gtk_css_parser_get_end_location (self: scanner->parser)); |
844 | } |
845 | else |
846 | section = NULL; |
847 | |
848 | if (GTK_IS_CSS_SHORTHAND_PROPERTY (property)) |
849 | { |
850 | GtkCssShorthandProperty *shorthand = GTK_CSS_SHORTHAND_PROPERTY (property); |
851 | guint i; |
852 | |
853 | for (i = 0; i < _gtk_css_shorthand_property_get_n_subproperties (shorthand); i++) |
854 | { |
855 | GtkCssStyleProperty *child = _gtk_css_shorthand_property_get_subproperty (shorthand, property: i); |
856 | GtkCssValue *sub = _gtk_css_array_value_get_nth (value, i); |
857 | |
858 | gtk_css_ruleset_add (ruleset, property: child, _gtk_css_value_ref (value: sub), section); |
859 | } |
860 | |
861 | _gtk_css_value_unref (value); |
862 | } |
863 | else if (GTK_IS_CSS_STYLE_PROPERTY (property)) |
864 | { |
865 | |
866 | gtk_css_ruleset_add (ruleset, GTK_CSS_STYLE_PROPERTY (property), value, section); |
867 | } |
868 | else |
869 | { |
870 | g_assert_not_reached (); |
871 | _gtk_css_value_unref (value); |
872 | } |
873 | |
874 | g_clear_pointer (§ion, gtk_css_section_unref); |
875 | } |
876 | else |
877 | { |
878 | gtk_css_parser_error_value (self: scanner->parser, format: "No property named \"%s\"" , name); |
879 | } |
880 | |
881 | out: |
882 | g_free (mem: name); |
883 | |
884 | gtk_css_parser_end_block (self: scanner->parser); |
885 | } |
886 | |
887 | static void |
888 | parse_declarations (GtkCssScanner *scanner, |
889 | GtkCssRuleset *ruleset) |
890 | { |
891 | while (!gtk_css_parser_has_token (self: scanner->parser, token_type: GTK_CSS_TOKEN_EOF)) |
892 | { |
893 | parse_declaration (scanner, ruleset); |
894 | } |
895 | } |
896 | |
897 | static void |
898 | parse_ruleset (GtkCssScanner *scanner) |
899 | { |
900 | GtkCssSelectors selectors; |
901 | GtkCssRuleset ruleset = { 0, }; |
902 | |
903 | gtk_css_selectors_init (self: &selectors); |
904 | |
905 | parse_selector_list (scanner, selectors: &selectors); |
906 | if (gtk_css_selectors_get_size (self: &selectors) == 0) |
907 | { |
908 | gtk_css_parser_skip_until (self: scanner->parser, token_type: GTK_CSS_TOKEN_OPEN_CURLY); |
909 | gtk_css_parser_skip (self: scanner->parser); |
910 | goto out; |
911 | } |
912 | |
913 | if (!gtk_css_parser_has_token (self: scanner->parser, token_type: GTK_CSS_TOKEN_OPEN_CURLY)) |
914 | { |
915 | guint i; |
916 | gtk_css_parser_error_syntax (self: scanner->parser, format: "Expected '{' after selectors" ); |
917 | for (i = 0; i < gtk_css_selectors_get_size (self: &selectors); i++) |
918 | _gtk_css_selector_free (selector: gtk_css_selectors_get (self: &selectors, pos: i)); |
919 | gtk_css_parser_skip_until (self: scanner->parser, token_type: GTK_CSS_TOKEN_OPEN_CURLY); |
920 | gtk_css_parser_skip (self: scanner->parser); |
921 | goto out; |
922 | } |
923 | |
924 | gtk_css_parser_start_block (self: scanner->parser); |
925 | |
926 | parse_declarations (scanner, ruleset: &ruleset); |
927 | |
928 | gtk_css_parser_end_block (self: scanner->parser); |
929 | |
930 | css_provider_commit (css_provider: scanner->provider, selectors: &selectors, ruleset: &ruleset); |
931 | gtk_css_ruleset_clear (ruleset: &ruleset); |
932 | |
933 | out: |
934 | gtk_css_selectors_clear (self: &selectors); |
935 | } |
936 | |
937 | static void |
938 | parse_statement (GtkCssScanner *scanner) |
939 | { |
940 | if (gtk_css_parser_has_token (self: scanner->parser, token_type: GTK_CSS_TOKEN_AT_KEYWORD)) |
941 | parse_at_keyword (scanner); |
942 | else |
943 | parse_ruleset (scanner); |
944 | } |
945 | |
946 | static void |
947 | parse_stylesheet (GtkCssScanner *scanner) |
948 | { |
949 | while (!gtk_css_parser_has_token (self: scanner->parser, token_type: GTK_CSS_TOKEN_EOF)) |
950 | { |
951 | if (gtk_css_parser_has_token (self: scanner->parser, token_type: GTK_CSS_TOKEN_CDO) || |
952 | gtk_css_parser_has_token (self: scanner->parser, token_type: GTK_CSS_TOKEN_CDC)) |
953 | { |
954 | gtk_css_parser_consume_token (self: scanner->parser); |
955 | continue; |
956 | } |
957 | |
958 | parse_statement (scanner); |
959 | } |
960 | } |
961 | |
962 | static int |
963 | gtk_css_provider_compare_rule (gconstpointer a_, |
964 | gconstpointer b_) |
965 | { |
966 | const GtkCssRuleset *a = (const GtkCssRuleset *) a_; |
967 | const GtkCssRuleset *b = (const GtkCssRuleset *) b_; |
968 | int compare; |
969 | |
970 | compare = _gtk_css_selector_compare (a: a->selector, b: b->selector); |
971 | if (compare != 0) |
972 | return compare; |
973 | |
974 | return 0; |
975 | } |
976 | |
977 | static void |
978 | gtk_css_provider_postprocess (GtkCssProvider *css_provider) |
979 | { |
980 | GtkCssProviderPrivate *priv = gtk_css_provider_get_instance_private (self: css_provider); |
981 | GtkCssSelectorTreeBuilder *builder; |
982 | guint i; |
983 | gint64 before G_GNUC_UNUSED; |
984 | |
985 | before = GDK_PROFILER_CURRENT_TIME; |
986 | |
987 | g_array_sort (array: priv->rulesets, compare_func: gtk_css_provider_compare_rule); |
988 | |
989 | builder = _gtk_css_selector_tree_builder_new (); |
990 | for (i = 0; i < priv->rulesets->len; i++) |
991 | { |
992 | GtkCssRuleset *ruleset; |
993 | |
994 | ruleset = &g_array_index (priv->rulesets, GtkCssRuleset, i); |
995 | |
996 | _gtk_css_selector_tree_builder_add (builder, |
997 | selectors: ruleset->selector, |
998 | selector_match: &ruleset->selector_match, |
999 | match: ruleset); |
1000 | } |
1001 | |
1002 | priv->tree = _gtk_css_selector_tree_builder_build (builder); |
1003 | _gtk_css_selector_tree_builder_free (builder); |
1004 | |
1005 | #ifndef VERIFY_TREE |
1006 | for (i = 0; i < priv->rulesets->len; i++) |
1007 | { |
1008 | GtkCssRuleset *ruleset; |
1009 | |
1010 | ruleset = &g_array_index (priv->rulesets, GtkCssRuleset, i); |
1011 | |
1012 | _gtk_css_selector_free (selector: ruleset->selector); |
1013 | ruleset->selector = NULL; |
1014 | } |
1015 | #endif |
1016 | |
1017 | gdk_profiler_end_mark (before, "create selector tree" , NULL); |
1018 | } |
1019 | |
1020 | static void |
1021 | gtk_css_provider_load_internal (GtkCssProvider *self, |
1022 | GtkCssScanner *parent, |
1023 | GFile *file, |
1024 | GBytes *bytes) |
1025 | { |
1026 | gint64 before G_GNUC_UNUSED; |
1027 | |
1028 | before = GDK_PROFILER_CURRENT_TIME; |
1029 | |
1030 | if (bytes == NULL) |
1031 | { |
1032 | GError *load_error = NULL; |
1033 | |
1034 | bytes = g_file_load_bytes (file, NULL, NULL, error: &load_error); |
1035 | |
1036 | if (bytes == NULL) |
1037 | { |
1038 | if (parent == NULL) |
1039 | { |
1040 | GtkCssLocation empty = { 0, }; |
1041 | GtkCssSection *section = gtk_css_section_new (file, start: &empty, end: &empty); |
1042 | |
1043 | gtk_css_style_provider_emit_error (GTK_STYLE_PROVIDER (self), section, error: load_error); |
1044 | gtk_css_section_unref (section); |
1045 | } |
1046 | else |
1047 | { |
1048 | gtk_css_parser_error (self: parent->parser, |
1049 | code: GTK_CSS_PARSER_ERROR_IMPORT, |
1050 | start: gtk_css_parser_get_block_location (self: parent->parser), |
1051 | end: gtk_css_parser_get_end_location (self: parent->parser), |
1052 | format: "Failed to import: %s" , |
1053 | load_error->message); |
1054 | } |
1055 | |
1056 | g_error_free (error: load_error); |
1057 | } |
1058 | } |
1059 | |
1060 | if (bytes) |
1061 | { |
1062 | GtkCssScanner *scanner; |
1063 | |
1064 | scanner = gtk_css_scanner_new (provider: self, |
1065 | parent, |
1066 | file, |
1067 | bytes); |
1068 | |
1069 | parse_stylesheet (scanner); |
1070 | |
1071 | gtk_css_scanner_destroy (scanner); |
1072 | |
1073 | if (parent == NULL) |
1074 | gtk_css_provider_postprocess (css_provider: self); |
1075 | |
1076 | g_bytes_unref (bytes); |
1077 | } |
1078 | |
1079 | if (GDK_PROFILER_IS_RUNNING) |
1080 | { |
1081 | char *uri = g_file_get_uri (file); |
1082 | gdk_profiler_end_mark (before, "theme load" , uri); |
1083 | g_free (mem: uri); |
1084 | } |
1085 | } |
1086 | |
1087 | /** |
1088 | * gtk_css_provider_load_from_data: |
1089 | * @css_provider: a `GtkCssProvider` |
1090 | * @data: (array length=length) (element-type guint8): CSS data loaded in memory |
1091 | * @length: the length of @data in bytes, or -1 for NUL terminated strings. If |
1092 | * @length is not -1, the code will assume it is not NUL terminated and will |
1093 | * potentially do a copy. |
1094 | * |
1095 | * Loads @data into @css_provider. |
1096 | * |
1097 | * This clears any previously loaded information. |
1098 | */ |
1099 | void |
1100 | gtk_css_provider_load_from_data (GtkCssProvider *css_provider, |
1101 | const char *data, |
1102 | gssize length) |
1103 | { |
1104 | GBytes *bytes; |
1105 | |
1106 | g_return_if_fail (GTK_IS_CSS_PROVIDER (css_provider)); |
1107 | g_return_if_fail (data != NULL); |
1108 | |
1109 | if (length < 0) |
1110 | length = strlen (s: data); |
1111 | |
1112 | bytes = g_bytes_new_static (data, size: length); |
1113 | |
1114 | gtk_css_provider_reset (css_provider); |
1115 | |
1116 | g_bytes_ref (bytes); |
1117 | gtk_css_provider_load_internal (self: css_provider, NULL, NULL, bytes); |
1118 | g_bytes_unref (bytes); |
1119 | |
1120 | gtk_style_provider_changed (GTK_STYLE_PROVIDER (css_provider)); |
1121 | } |
1122 | |
1123 | /** |
1124 | * gtk_css_provider_load_from_file: |
1125 | * @css_provider: a `GtkCssProvider` |
1126 | * @file: `GFile` pointing to a file to load |
1127 | * |
1128 | * Loads the data contained in @file into @css_provider. |
1129 | * |
1130 | * This clears any previously loaded information. |
1131 | */ |
1132 | void |
1133 | gtk_css_provider_load_from_file (GtkCssProvider *css_provider, |
1134 | GFile *file) |
1135 | { |
1136 | g_return_if_fail (GTK_IS_CSS_PROVIDER (css_provider)); |
1137 | g_return_if_fail (G_IS_FILE (file)); |
1138 | |
1139 | gtk_css_provider_reset (css_provider); |
1140 | |
1141 | gtk_css_provider_load_internal (self: css_provider, NULL, file, NULL); |
1142 | |
1143 | gtk_style_provider_changed (GTK_STYLE_PROVIDER (css_provider)); |
1144 | } |
1145 | |
1146 | /** |
1147 | * gtk_css_provider_load_from_path: |
1148 | * @css_provider: a `GtkCssProvider` |
1149 | * @path: (type filename): the path of a filename to load, in the GLib filename encoding |
1150 | * |
1151 | * Loads the data contained in @path into @css_provider. |
1152 | * |
1153 | * This clears any previously loaded information. |
1154 | */ |
1155 | void |
1156 | gtk_css_provider_load_from_path (GtkCssProvider *css_provider, |
1157 | const char *path) |
1158 | { |
1159 | GFile *file; |
1160 | |
1161 | g_return_if_fail (GTK_IS_CSS_PROVIDER (css_provider)); |
1162 | g_return_if_fail (path != NULL); |
1163 | |
1164 | file = g_file_new_for_path (path); |
1165 | |
1166 | gtk_css_provider_load_from_file (css_provider, file); |
1167 | |
1168 | g_object_unref (object: file); |
1169 | } |
1170 | |
1171 | /** |
1172 | * gtk_css_provider_load_from_resource: |
1173 | * @css_provider: a `GtkCssProvider` |
1174 | * @resource_path: a `GResource` resource path |
1175 | * |
1176 | * Loads the data contained in the resource at @resource_path into |
1177 | * the @css_provider. |
1178 | * |
1179 | * This clears any previously loaded information. |
1180 | */ |
1181 | void |
1182 | gtk_css_provider_load_from_resource (GtkCssProvider *css_provider, |
1183 | const char *resource_path) |
1184 | { |
1185 | GFile *file; |
1186 | char *uri, *escaped; |
1187 | |
1188 | g_return_if_fail (GTK_IS_CSS_PROVIDER (css_provider)); |
1189 | g_return_if_fail (resource_path != NULL); |
1190 | |
1191 | escaped = g_uri_escape_string (unescaped: resource_path, |
1192 | G_URI_RESERVED_CHARS_ALLOWED_IN_PATH, FALSE); |
1193 | uri = g_strconcat (string1: "resource://" , escaped, NULL); |
1194 | g_free (mem: escaped); |
1195 | |
1196 | file = g_file_new_for_uri (uri); |
1197 | g_free (mem: uri); |
1198 | |
1199 | gtk_css_provider_load_from_file (css_provider, file); |
1200 | |
1201 | g_object_unref (object: file); |
1202 | } |
1203 | |
1204 | char * |
1205 | _gtk_get_theme_dir (void) |
1206 | { |
1207 | const char *var; |
1208 | |
1209 | var = g_getenv (variable: "GTK_DATA_PREFIX" ); |
1210 | if (var == NULL) |
1211 | var = _gtk_get_data_prefix (); |
1212 | return g_build_filename (first_element: var, "share" , "themes" , NULL); |
1213 | } |
1214 | |
1215 | /* Return the path that this providers gtk.css was loaded from, |
1216 | * if it is part of a theme, otherwise NULL. |
1217 | */ |
1218 | const char * |
1219 | _gtk_css_provider_get_theme_dir (GtkCssProvider *provider) |
1220 | { |
1221 | GtkCssProviderPrivate *priv = gtk_css_provider_get_instance_private (self: provider); |
1222 | |
1223 | return priv->path; |
1224 | } |
1225 | |
1226 | #if (GTK_MINOR_VERSION % 2) |
1227 | #define MINOR (GTK_MINOR_VERSION + 1) |
1228 | #else |
1229 | #define MINOR GTK_MINOR_VERSION |
1230 | #endif |
1231 | |
1232 | /* |
1233 | * Look for |
1234 | * $dir/$subdir/gtk-4.16/gtk-$variant.css |
1235 | * $dir/$subdir/gtk-4.14/gtk-$variant.css |
1236 | * ... |
1237 | * $dir/$subdir/gtk-4.0/gtk-$variant.css |
1238 | * and return the first found file. |
1239 | */ |
1240 | static char * |
1241 | _gtk_css_find_theme_dir (const char *dir, |
1242 | const char *subdir, |
1243 | const char *name, |
1244 | const char *variant) |
1245 | { |
1246 | char *file; |
1247 | char *base; |
1248 | char *subsubdir; |
1249 | int i; |
1250 | char *path; |
1251 | |
1252 | if (variant) |
1253 | file = g_strconcat (string1: "gtk-" , variant, ".css" , NULL); |
1254 | else |
1255 | file = g_strdup (str: "gtk.css" ); |
1256 | |
1257 | if (subdir) |
1258 | base = g_build_filename (first_element: dir, subdir, name, NULL); |
1259 | else |
1260 | base = g_build_filename (first_element: dir, name, NULL); |
1261 | |
1262 | for (i = MINOR; i >= 0; i = i - 2) |
1263 | { |
1264 | subsubdir = g_strdup_printf (format: "gtk-4.%d" , i); |
1265 | path = g_build_filename (first_element: base, subsubdir, file, NULL); |
1266 | g_free (mem: subsubdir); |
1267 | |
1268 | if (g_file_test (filename: path, test: G_FILE_TEST_EXISTS)) |
1269 | break; |
1270 | |
1271 | g_free (mem: path); |
1272 | path = NULL; |
1273 | } |
1274 | |
1275 | g_free (mem: file); |
1276 | g_free (mem: base); |
1277 | |
1278 | return path; |
1279 | } |
1280 | |
1281 | #undef MINOR |
1282 | |
1283 | static char * |
1284 | _gtk_css_find_theme (const char *name, |
1285 | const char *variant) |
1286 | { |
1287 | char *path; |
1288 | const char *const *dirs; |
1289 | int i; |
1290 | char *dir; |
1291 | |
1292 | /* First look in the user's data directory */ |
1293 | path = _gtk_css_find_theme_dir (dir: g_get_user_data_dir (), subdir: "themes" , name, variant); |
1294 | if (path) |
1295 | return path; |
1296 | |
1297 | /* Next look in the user's home directory */ |
1298 | path = _gtk_css_find_theme_dir (dir: g_get_home_dir (), subdir: ".themes" , name, variant); |
1299 | if (path) |
1300 | return path; |
1301 | |
1302 | /* Look in system data directories */ |
1303 | dirs = g_get_system_data_dirs (); |
1304 | for (i = 0; dirs[i]; i++) |
1305 | { |
1306 | path = _gtk_css_find_theme_dir (dir: dirs[i], subdir: "themes" , name, variant); |
1307 | if (path) |
1308 | return path; |
1309 | } |
1310 | |
1311 | /* Finally, try in the default theme directory */ |
1312 | dir = _gtk_get_theme_dir (); |
1313 | path = _gtk_css_find_theme_dir (dir, NULL, name, variant); |
1314 | g_free (mem: dir); |
1315 | |
1316 | return path; |
1317 | } |
1318 | |
1319 | /** |
1320 | * gtk_css_provider_load_named: |
1321 | * @provider: a `GtkCssProvider` |
1322 | * @name: A theme name |
1323 | * @variant: (nullable): variant to load, for example, "dark", or |
1324 | * %NULL for the default |
1325 | * |
1326 | * Loads a theme from the usual theme paths. |
1327 | * |
1328 | * The actual process of finding the theme might change between |
1329 | * releases, but it is guaranteed that this function uses the same |
1330 | * mechanism to load the theme that GTK uses for loading its own theme. |
1331 | */ |
1332 | void |
1333 | gtk_css_provider_load_named (GtkCssProvider *provider, |
1334 | const char *name, |
1335 | const char *variant) |
1336 | { |
1337 | char *path; |
1338 | char *resource_path; |
1339 | |
1340 | g_return_if_fail (GTK_IS_CSS_PROVIDER (provider)); |
1341 | g_return_if_fail (name != NULL); |
1342 | |
1343 | gtk_css_provider_reset (css_provider: provider); |
1344 | |
1345 | /* try loading the resource for the theme. This is mostly meant for built-in |
1346 | * themes. |
1347 | */ |
1348 | if (variant) |
1349 | resource_path = g_strdup_printf (format: "/org/gtk/libgtk/theme/%s/gtk-%s.css" , name, variant); |
1350 | else |
1351 | resource_path = g_strdup_printf (format: "/org/gtk/libgtk/theme/%s/gtk.css" , name); |
1352 | |
1353 | if (g_resources_get_info (path: resource_path, lookup_flags: 0, NULL, NULL, NULL)) |
1354 | { |
1355 | gtk_css_provider_load_from_resource (css_provider: provider, resource_path); |
1356 | g_free (mem: resource_path); |
1357 | return; |
1358 | } |
1359 | g_free (mem: resource_path); |
1360 | |
1361 | /* Next try looking for files in the various theme directories. */ |
1362 | path = _gtk_css_find_theme (name, variant); |
1363 | if (path) |
1364 | { |
1365 | GtkCssProviderPrivate *priv = gtk_css_provider_get_instance_private (self: provider); |
1366 | char *dir, *resource_file; |
1367 | GResource *resource; |
1368 | |
1369 | dir = g_path_get_dirname (file_name: path); |
1370 | resource_file = g_build_filename (first_element: dir, "gtk.gresource" , NULL); |
1371 | resource = g_resource_load (filename: resource_file, NULL); |
1372 | g_free (mem: resource_file); |
1373 | |
1374 | if (resource != NULL) |
1375 | g_resources_register (resource); |
1376 | |
1377 | gtk_css_provider_load_from_path (css_provider: provider, path); |
1378 | |
1379 | /* Only set this after load, as load_from_path will clear it */ |
1380 | priv->resource = resource; |
1381 | priv->path = dir; |
1382 | |
1383 | g_free (mem: path); |
1384 | } |
1385 | else |
1386 | { |
1387 | /* Things failed! Fall back! Fall back! |
1388 | * |
1389 | * We accept the names HighContrast, HighContrastInverse, |
1390 | * Adwaita and Adwaita-dark as aliases for the variants |
1391 | * of the Default theme. |
1392 | */ |
1393 | if (strcmp (s1: name, s2: "HighContrast" ) == 0) |
1394 | { |
1395 | if (g_strcmp0 (str1: variant, str2: "dark" ) == 0) |
1396 | gtk_css_provider_load_named (provider, DEFAULT_THEME_NAME, variant: "hc-dark" ); |
1397 | else |
1398 | gtk_css_provider_load_named (provider, DEFAULT_THEME_NAME, variant: "hc" ); |
1399 | } |
1400 | else if (strcmp (s1: name, s2: "HighConstrastInverse" ) == 0) |
1401 | gtk_css_provider_load_named (provider, DEFAULT_THEME_NAME, variant: "hc-dark" ); |
1402 | else if (strcmp (s1: name, s2: "Adwaita-dark" ) == 0) |
1403 | gtk_css_provider_load_named (provider, DEFAULT_THEME_NAME, variant: "dark" ); |
1404 | else if (strcmp (s1: name, DEFAULT_THEME_NAME) != 0) |
1405 | gtk_css_provider_load_named (provider, DEFAULT_THEME_NAME, variant); |
1406 | else |
1407 | { |
1408 | g_return_if_fail (variant != NULL); |
1409 | gtk_css_provider_load_named (provider, DEFAULT_THEME_NAME, NULL); |
1410 | } |
1411 | } |
1412 | } |
1413 | |
1414 | static int |
1415 | compare_properties (gconstpointer a, gconstpointer b, gpointer style) |
1416 | { |
1417 | const guint *ua = a; |
1418 | const guint *ub = b; |
1419 | PropertyValue *styles = style; |
1420 | |
1421 | return strcmp (s1: _gtk_style_property_get_name (GTK_STYLE_PROPERTY (styles[*ua].property)), |
1422 | s2: _gtk_style_property_get_name (GTK_STYLE_PROPERTY (styles[*ub].property))); |
1423 | } |
1424 | |
1425 | static void |
1426 | gtk_css_ruleset_print (const GtkCssRuleset *ruleset, |
1427 | GString *str) |
1428 | { |
1429 | guint i; |
1430 | |
1431 | _gtk_css_selector_tree_match_print (tree: ruleset->selector_match, str); |
1432 | |
1433 | g_string_append (string: str, val: " {\n" ); |
1434 | |
1435 | if (ruleset->styles) |
1436 | { |
1437 | guint *sorted = g_new (guint, ruleset->n_styles); |
1438 | |
1439 | for (i = 0; i < ruleset->n_styles; i++) |
1440 | sorted[i] = i; |
1441 | |
1442 | /* so the output is identical for identical selector styles */ |
1443 | g_qsort_with_data (pbase: sorted, total_elems: ruleset->n_styles, size: sizeof (guint), compare_func: compare_properties, user_data: ruleset->styles); |
1444 | |
1445 | for (i = 0; i < ruleset->n_styles; i++) |
1446 | { |
1447 | PropertyValue *prop = &ruleset->styles[sorted[i]]; |
1448 | g_string_append (string: str, val: " " ); |
1449 | g_string_append (string: str, val: _gtk_style_property_get_name (GTK_STYLE_PROPERTY (prop->property))); |
1450 | g_string_append (string: str, val: ": " ); |
1451 | _gtk_css_value_print (value: prop->value, string: str); |
1452 | g_string_append (string: str, val: ";\n" ); |
1453 | } |
1454 | |
1455 | g_free (mem: sorted); |
1456 | } |
1457 | |
1458 | g_string_append (string: str, val: "}\n" ); |
1459 | } |
1460 | |
1461 | static void |
1462 | gtk_css_provider_print_colors (GHashTable *colors, |
1463 | GString *str) |
1464 | { |
1465 | GList *keys, *walk; |
1466 | |
1467 | keys = g_hash_table_get_keys (hash_table: colors); |
1468 | /* so the output is identical for identical styles */ |
1469 | keys = g_list_sort (list: keys, compare_func: (GCompareFunc) strcmp); |
1470 | |
1471 | for (walk = keys; walk; walk = walk->next) |
1472 | { |
1473 | const char *name = walk->data; |
1474 | GtkCssValue *color = g_hash_table_lookup (hash_table: colors, key: (gpointer) name); |
1475 | |
1476 | g_string_append (string: str, val: "@define-color " ); |
1477 | g_string_append (string: str, val: name); |
1478 | g_string_append (string: str, val: " " ); |
1479 | _gtk_css_value_print (value: color, string: str); |
1480 | g_string_append (string: str, val: ";\n" ); |
1481 | } |
1482 | |
1483 | g_list_free (list: keys); |
1484 | } |
1485 | |
1486 | static void |
1487 | gtk_css_provider_print_keyframes (GHashTable *keyframes, |
1488 | GString *str) |
1489 | { |
1490 | GList *keys, *walk; |
1491 | |
1492 | keys = g_hash_table_get_keys (hash_table: keyframes); |
1493 | /* so the output is identical for identical styles */ |
1494 | keys = g_list_sort (list: keys, compare_func: (GCompareFunc) strcmp); |
1495 | |
1496 | for (walk = keys; walk; walk = walk->next) |
1497 | { |
1498 | const char *name = walk->data; |
1499 | GtkCssKeyframes *keyframe = g_hash_table_lookup (hash_table: keyframes, key: (gpointer) name); |
1500 | |
1501 | if (str->len > 0) |
1502 | g_string_append (string: str, val: "\n" ); |
1503 | g_string_append (string: str, val: "@keyframes " ); |
1504 | g_string_append (string: str, val: name); |
1505 | g_string_append (string: str, val: " {\n" ); |
1506 | _gtk_css_keyframes_print (keyframes: keyframe, string: str); |
1507 | g_string_append (string: str, val: "}\n" ); |
1508 | } |
1509 | |
1510 | g_list_free (list: keys); |
1511 | } |
1512 | |
1513 | /** |
1514 | * gtk_css_provider_to_string: |
1515 | * @provider: the provider to write to a string |
1516 | * |
1517 | * Converts the @provider into a string representation in CSS |
1518 | * format. |
1519 | * |
1520 | * Using [method@Gtk.CssProvider.load_from_data] with the return |
1521 | * value from this function on a new provider created with |
1522 | * [ctor@Gtk.CssProvider.new] will basically create a duplicate |
1523 | * of this @provider. |
1524 | * |
1525 | * Returns: a new string representing the @provider. |
1526 | */ |
1527 | char * |
1528 | gtk_css_provider_to_string (GtkCssProvider *provider) |
1529 | { |
1530 | GtkCssProviderPrivate *priv = gtk_css_provider_get_instance_private (self: provider); |
1531 | GString *str; |
1532 | guint i; |
1533 | |
1534 | g_return_val_if_fail (GTK_IS_CSS_PROVIDER (provider), NULL); |
1535 | |
1536 | str = g_string_new (init: "" ); |
1537 | |
1538 | gtk_css_provider_print_colors (colors: priv->symbolic_colors, str); |
1539 | gtk_css_provider_print_keyframes (keyframes: priv->keyframes, str); |
1540 | |
1541 | for (i = 0; i < priv->rulesets->len; i++) |
1542 | { |
1543 | if (str->len != 0) |
1544 | g_string_append (string: str, val: "\n" ); |
1545 | gtk_css_ruleset_print (ruleset: &g_array_index (priv->rulesets, GtkCssRuleset, i), str); |
1546 | } |
1547 | |
1548 | return g_string_free (string: str, FALSE); |
1549 | } |
1550 | |
1551 | |