1 /* GTK - The GIMP Toolkit
2 * Copyright (C) 2010 Carlos Garnacho <carlosg@gnome.org>
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.
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.
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/>.
19 #include "gtkcssrgbavalueprivate.h"
20 #include "gtkcssstylepropertyprivate.h"
21 #include "gtkhslaprivate.h"
22 #include "gtkstylepropertyprivate.h"
23 #include "gtksymboliccolorprivate.h"
24 #include "gtkstyleproperties.h"
26 #include "gtkwin32themeprivate.h"
29 * SECTION:gtksymboliccolor
30 * @Short_description: Symbolic colors
31 * @Title: GtkSymbolicColor
33 * GtkSymbolicColor is a boxed type that represents a symbolic color.
34 * It is the result of parsing a
35 * <link linkend="gtkcssprovider-symbolic-colors">color expression</link>.
36 * To obtain the color represented by a GtkSymbolicColor, it has to
37 * be resolved with gtk_symbolic_color_resolve(), which replaces all
38 * symbolic color references by the colors they refer to (in a given
39 * context) and evaluates mix, shade and other expressions, resulting
40 * in a #GdkRGBA value.
42 * It is not normally necessary to deal directly with #GtkSymbolicColors,
43 * since they are mostly used behind the scenes by #GtkStyleContext and
47 G_DEFINE_BOXED_TYPE (GtkSymbolicColor, gtk_symbolic_color,
48 gtk_symbolic_color_ref, gtk_symbolic_color_unref)
58 COLOR_TYPE_CURRENT_COLOR
61 struct _GtkSymbolicColor
65 GtkCssValue *last_value;
73 GtkSymbolicColor *color;
79 GtkSymbolicColor *color1;
80 GtkSymbolicColor *color2;
93 gtk_css_value_symbolic_free (GtkCssValue *value)
95 GtkSymbolicColor *color = (GtkSymbolicColor *) value;
97 _gtk_css_value_unref (color->last_value);
100 case COLOR_TYPE_NAME:
101 g_free (color->sym_col.name);
103 case COLOR_TYPE_SHADE:
104 gtk_symbolic_color_unref (color->sym_col.shade.color);
106 case COLOR_TYPE_ALPHA:
107 gtk_symbolic_color_unref (color->sym_col.alpha.color);
110 gtk_symbolic_color_unref (color->sym_col.mix.color1);
111 gtk_symbolic_color_unref (color->sym_col.mix.color2);
113 case COLOR_TYPE_WIN32:
114 g_free (color->sym_col.win32.theme_class);
120 g_slice_free (GtkSymbolicColor, color);
124 gtk_css_value_symbolic_get_fallback (guint property_id,
125 GtkStyleProviderPrivate *provider,
126 GtkCssComputedValues *values,
127 GtkCssComputedValues *parent_values)
129 static const GdkRGBA transparent = { 0, 0, 0, 0 };
133 case GTK_CSS_PROPERTY_BACKGROUND_IMAGE:
134 case GTK_CSS_PROPERTY_BORDER_IMAGE_SOURCE:
135 case GTK_CSS_PROPERTY_TEXT_SHADOW:
136 case GTK_CSS_PROPERTY_ICON_SHADOW:
137 case GTK_CSS_PROPERTY_BOX_SHADOW:
138 return _gtk_css_rgba_value_new_from_rgba (&transparent);
139 case GTK_CSS_PROPERTY_COLOR:
140 case GTK_CSS_PROPERTY_BACKGROUND_COLOR:
141 case GTK_CSS_PROPERTY_BORDER_TOP_COLOR:
142 case GTK_CSS_PROPERTY_BORDER_RIGHT_COLOR:
143 case GTK_CSS_PROPERTY_BORDER_BOTTOM_COLOR:
144 case GTK_CSS_PROPERTY_BORDER_LEFT_COLOR:
145 case GTK_CSS_PROPERTY_OUTLINE_COLOR:
146 return _gtk_css_value_compute (_gtk_css_style_property_get_initial_value (_gtk_css_style_property_lookup_by_id (property_id)),
153 if (property_id < GTK_CSS_PROPERTY_N_PROPERTIES)
154 g_warning ("No fallback color defined for property '%s'",
155 _gtk_style_property_get_name (GTK_STYLE_PROPERTY (_gtk_css_style_property_lookup_by_id (property_id))));
156 return _gtk_css_rgba_value_new_from_rgba (&transparent);
161 gtk_css_value_symbolic_compute (GtkCssValue *value,
163 GtkStyleProviderPrivate *provider,
164 GtkCssComputedValues *values,
165 GtkCssComputedValues *parent_values,
166 GtkCssDependencies *dependencies)
168 GtkCssValue *resolved, *current;
169 GtkCssDependencies current_deps;
171 /* The computed value of the ‘currentColor’ keyword is the computed
172 * value of the ‘color’ property. If the ‘currentColor’ keyword is
173 * set on the ‘color’ property itself, it is treated as ‘color: inherit’.
175 if (property_id == GTK_CSS_PROPERTY_COLOR)
179 current = _gtk_css_computed_values_get_value (parent_values, GTK_CSS_PROPERTY_COLOR);
180 current_deps = GTK_CSS_EQUALS_PARENT;
184 current = _gtk_css_style_property_get_initial_value (_gtk_css_style_property_lookup_by_id (GTK_CSS_PROPERTY_COLOR));
190 current = _gtk_css_computed_values_get_value (values, GTK_CSS_PROPERTY_COLOR);
191 current_deps = GTK_CSS_DEPENDS_ON_COLOR;
194 resolved = _gtk_symbolic_color_resolve_full ((GtkSymbolicColor *) value,
200 if (resolved == NULL)
201 return gtk_css_value_symbolic_get_fallback (property_id, provider, values, parent_values);
207 gtk_css_value_symbolic_equal (const GtkCssValue *value1,
208 const GtkCssValue *value2)
210 GtkSymbolicColor *color1 = (GtkSymbolicColor *) value1;
211 GtkSymbolicColor *color2 = (GtkSymbolicColor *) value2;
213 if (color1->type != color2->type)
216 switch (color1->type)
218 case COLOR_TYPE_LITERAL:
219 return _gtk_css_value_equal (color1->last_value, color2->last_value);
220 case COLOR_TYPE_NAME:
221 return g_str_equal (color1->sym_col.name, color2->sym_col.name);
222 case COLOR_TYPE_SHADE:
223 return color1->sym_col.shade.factor == color2->sym_col.shade.factor &&
224 _gtk_css_value_equal ((GtkCssValue *) color1->sym_col.shade.color,
225 (GtkCssValue *) color2->sym_col.shade.color);
226 case COLOR_TYPE_ALPHA:
227 return color1->sym_col.alpha.factor == color2->sym_col.alpha.factor &&
228 _gtk_css_value_equal ((GtkCssValue *) color1->sym_col.alpha.color,
229 (GtkCssValue *) color2->sym_col.alpha.color);
231 return color1->sym_col.mix.factor == color2->sym_col.mix.factor &&
232 _gtk_css_value_equal ((GtkCssValue *) color1->sym_col.mix.color1,
233 (GtkCssValue *) color2->sym_col.mix.color1) &&
234 _gtk_css_value_equal ((GtkCssValue *) color1->sym_col.mix.color2,
235 (GtkCssValue *) color2->sym_col.mix.color2);
236 case COLOR_TYPE_WIN32:
237 return g_str_equal (color1->sym_col.win32.theme_class, color2->sym_col.win32.theme_class) &&
238 color1->sym_col.win32.id == color2->sym_col.win32.id;
239 case COLOR_TYPE_CURRENT_COLOR:
242 g_assert_not_reached ();
248 gtk_css_value_symbolic_transition (GtkCssValue *start,
253 return (GtkCssValue *) gtk_symbolic_color_new_mix ((GtkSymbolicColor *) start,
254 (GtkSymbolicColor *) end,
259 gtk_css_value_symbolic_print (const GtkCssValue *value,
262 GtkSymbolicColor *color = (GtkSymbolicColor *) value;
265 s = gtk_symbolic_color_to_string (color);
266 g_string_append (string, s);
270 static const GtkCssValueClass GTK_CSS_VALUE_SYMBOLIC = {
271 gtk_css_value_symbolic_free,
272 gtk_css_value_symbolic_compute,
273 gtk_css_value_symbolic_equal,
274 gtk_css_value_symbolic_transition,
275 gtk_css_value_symbolic_print
279 * gtk_symbolic_color_new_literal:
282 * Creates a symbolic color pointing to a literal color.
284 * Returns: a newly created #GtkSymbolicColor
289 gtk_symbolic_color_new_literal (const GdkRGBA *color)
291 GtkSymbolicColor *symbolic_color;
293 g_return_val_if_fail (color != NULL, NULL);
295 symbolic_color = _gtk_css_value_new (GtkSymbolicColor, >K_CSS_VALUE_SYMBOLIC);
296 symbolic_color->type = COLOR_TYPE_LITERAL;
297 symbolic_color->last_value = _gtk_css_rgba_value_new_from_rgba (color);
299 return symbolic_color;
303 * gtk_symbolic_color_new_name:
306 * Creates a symbolic color pointing to an unresolved named
307 * color. See gtk_style_context_lookup_color() and
308 * gtk_style_properties_lookup_color().
310 * Returns: a newly created #GtkSymbolicColor
315 gtk_symbolic_color_new_name (const gchar *name)
317 GtkSymbolicColor *symbolic_color;
319 g_return_val_if_fail (name != NULL, NULL);
321 symbolic_color = _gtk_css_value_new (GtkSymbolicColor, >K_CSS_VALUE_SYMBOLIC);
322 symbolic_color->type = COLOR_TYPE_NAME;
323 symbolic_color->sym_col.name = g_strdup (name);
325 return symbolic_color;
329 * gtk_symbolic_color_new_shade: (constructor)
330 * @color: another #GtkSymbolicColor
331 * @factor: shading factor to apply to @color
333 * Creates a symbolic color defined as a shade of
334 * another color. A factor > 1.0 would resolve to
335 * a brighter color, while < 1.0 would resolve to
338 * Returns: A newly created #GtkSymbolicColor
343 gtk_symbolic_color_new_shade (GtkSymbolicColor *color,
346 GtkSymbolicColor *symbolic_color;
348 g_return_val_if_fail (color != NULL, NULL);
350 symbolic_color = _gtk_css_value_new (GtkSymbolicColor, >K_CSS_VALUE_SYMBOLIC);
351 symbolic_color->type = COLOR_TYPE_SHADE;
352 symbolic_color->sym_col.shade.color = gtk_symbolic_color_ref (color);
353 symbolic_color->sym_col.shade.factor = factor;
355 return symbolic_color;
359 * gtk_symbolic_color_new_alpha: (constructor)
360 * @color: another #GtkSymbolicColor
361 * @factor: factor to apply to @color alpha
363 * Creates a symbolic color by modifying the relative alpha
364 * value of @color. A factor < 1.0 would resolve to a more
365 * transparent color, while > 1.0 would resolve to a more
368 * Returns: A newly created #GtkSymbolicColor
373 gtk_symbolic_color_new_alpha (GtkSymbolicColor *color,
376 GtkSymbolicColor *symbolic_color;
378 g_return_val_if_fail (color != NULL, NULL);
380 symbolic_color = _gtk_css_value_new (GtkSymbolicColor, >K_CSS_VALUE_SYMBOLIC);
381 symbolic_color->type = COLOR_TYPE_ALPHA;
382 symbolic_color->sym_col.alpha.color = gtk_symbolic_color_ref (color);
383 symbolic_color->sym_col.alpha.factor = factor;
385 return symbolic_color;
389 * gtk_symbolic_color_new_mix: (constructor)
390 * @color1: color to mix
391 * @color2: another color to mix
392 * @factor: mix factor
394 * Creates a symbolic color defined as a mix of another
395 * two colors. a mix factor of 0 would resolve to @color1,
396 * while a factor of 1 would resolve to @color2.
398 * Returns: A newly created #GtkSymbolicColor
403 gtk_symbolic_color_new_mix (GtkSymbolicColor *color1,
404 GtkSymbolicColor *color2,
407 GtkSymbolicColor *symbolic_color;
409 g_return_val_if_fail (color1 != NULL, NULL);
410 g_return_val_if_fail (color1 != NULL, NULL);
412 symbolic_color = _gtk_css_value_new (GtkSymbolicColor, >K_CSS_VALUE_SYMBOLIC);
413 symbolic_color->type = COLOR_TYPE_MIX;
414 symbolic_color->sym_col.mix.color1 = gtk_symbolic_color_ref (color1);
415 symbolic_color->sym_col.mix.color2 = gtk_symbolic_color_ref (color2);
416 symbolic_color->sym_col.mix.factor = factor;
418 return symbolic_color;
422 * gtk_symbolic_color_new_win32: (constructor)
423 * @theme_class: The theme class to pull color from
426 * Creates a symbolic color based on the current win32
429 * Note that while this call is available on all platforms
430 * the actual value returned is not reliable on non-win32
433 * Returns: A newly created #GtkSymbolicColor
438 gtk_symbolic_color_new_win32 (const gchar *theme_class,
441 GtkSymbolicColor *symbolic_color;
443 g_return_val_if_fail (theme_class != NULL, NULL);
445 symbolic_color = _gtk_css_value_new (GtkSymbolicColor, >K_CSS_VALUE_SYMBOLIC);
446 symbolic_color->type = COLOR_TYPE_WIN32;
447 symbolic_color->sym_col.win32.theme_class = g_strdup (theme_class);
448 symbolic_color->sym_col.win32.id = id;
450 return symbolic_color;
454 * _gtk_symbolic_color_get_current_color:
456 * Gets the color representing the CSS 'currentColor' keyword.
457 * This color will resolve to the color set for the color property.
459 * Returns: (transfer none): The singleton representing the
460 * 'currentColor' keyword
463 _gtk_symbolic_color_get_current_color (void)
465 static GtkSymbolicColor *current_color = NULL;
467 if (G_UNLIKELY (current_color == NULL))
469 current_color = _gtk_css_value_new (GtkSymbolicColor, >K_CSS_VALUE_SYMBOLIC);
470 current_color->type = COLOR_TYPE_CURRENT_COLOR;
473 return current_color;
477 * gtk_symbolic_color_ref:
478 * @color: a #GtkSymbolicColor
480 * Increases the reference count of @color
482 * Returns: the same @color
487 gtk_symbolic_color_ref (GtkSymbolicColor *color)
489 g_return_val_if_fail (color != NULL, NULL);
491 _gtk_css_value_ref ((GtkCssValue *) color);
497 * gtk_symbolic_color_unref:
498 * @color: a #GtkSymbolicColor
500 * Decreases the reference count of @color, freeing its memory if the
501 * reference count reaches 0.
506 gtk_symbolic_color_unref (GtkSymbolicColor *color)
508 g_return_if_fail (color != NULL);
510 _gtk_css_value_unref ((GtkCssValue *) color);
514 _shade_color (GdkRGBA *color,
519 _gtk_hsla_init_from_rgba (&hsla, color);
521 hsla.lightness *= factor;
522 hsla.lightness = CLAMP (hsla.lightness, 0.0, 1.0);
524 hsla.saturation *= factor;
525 hsla.saturation = CLAMP (hsla.saturation, 0.0, 1.0);
527 _gdk_rgba_init_from_hsla (color, &hsla);
531 * gtk_symbolic_color_resolve:
532 * @color: a #GtkSymbolicColor
533 * @props: (allow-none): #GtkStyleProperties to use when resolving
534 * named colors, or %NULL
535 * @resolved_color: (out): return location for the resolved color
537 * If @color is resolvable, @resolved_color will be filled in
538 * with the resolved color, and %TRUE will be returned. Generally,
539 * if @color can't be resolved, it is due to it being defined on
540 * top of a named color that doesn't exist in @props.
542 * When @props is %NULL, resolving of named colors will fail, so if
543 * your @color is or references such a color, this function will
546 * Returns: %TRUE if the color has been resolved
551 gtk_symbolic_color_resolve (GtkSymbolicColor *color,
552 GtkStyleProperties *props,
553 GdkRGBA *resolved_color)
555 GdkRGBA pink = { 1.0, 0.5, 0.5, 1.0 };
556 GtkCssValue *v, *current;
558 g_return_val_if_fail (color != NULL, FALSE);
559 g_return_val_if_fail (resolved_color != NULL, FALSE);
560 g_return_val_if_fail (props == NULL || GTK_IS_STYLE_PROPERTIES (props), FALSE);
562 current = _gtk_css_rgba_value_new_from_rgba (&pink);
563 v =_gtk_symbolic_color_resolve_full (color,
564 GTK_STYLE_PROVIDER_PRIVATE (props),
568 _gtk_css_value_unref (current);
572 *resolved_color = *_gtk_css_rgba_value_get_rgba (v);
573 _gtk_css_value_unref (v);
578 _gtk_symbolic_color_resolve_full (GtkSymbolicColor *color,
579 GtkStyleProviderPrivate *provider,
580 GtkCssValue *current,
581 GtkCssDependencies current_deps,
582 GtkCssDependencies *dependencies)
584 GtkCssDependencies unused;
587 g_return_val_if_fail (color != NULL, FALSE);
588 g_return_val_if_fail (provider == NULL || GTK_IS_STYLE_PROVIDER_PRIVATE (provider), FALSE);
589 g_return_val_if_fail (current != NULL, FALSE);
591 if (dependencies == NULL)
592 dependencies = &unused;
598 case COLOR_TYPE_LITERAL:
599 return _gtk_css_value_ref (color->last_value);
600 case COLOR_TYPE_NAME:
602 GtkSymbolicColor *named_color;
604 named_color = _gtk_style_provider_private_get_color (provider, color->sym_col.name);
609 return _gtk_symbolic_color_resolve_full (named_color, provider, current, current_deps, dependencies);
613 case COLOR_TYPE_SHADE:
618 val = _gtk_symbolic_color_resolve_full (color->sym_col.shade.color, provider, current, current_deps, dependencies);
622 *dependencies = _gtk_css_dependencies_union (*dependencies, 0);
623 shade = *_gtk_css_rgba_value_get_rgba (val);
624 _shade_color (&shade, color->sym_col.shade.factor);
626 _gtk_css_value_unref (val);
628 value = _gtk_css_rgba_value_new_from_rgba (&shade);
632 case COLOR_TYPE_ALPHA:
637 val = _gtk_symbolic_color_resolve_full (color->sym_col.alpha.color, provider, current, current_deps, dependencies);
641 *dependencies = _gtk_css_dependencies_union (*dependencies, 0);
642 alpha = *_gtk_css_rgba_value_get_rgba (val);
643 alpha.alpha = CLAMP (alpha.alpha * color->sym_col.alpha.factor, 0, 1);
645 _gtk_css_value_unref (val);
647 value = _gtk_css_rgba_value_new_from_rgba (&alpha);
654 GdkRGBA color1, color2, res;
655 GtkCssDependencies dep1, dep2;
657 val = _gtk_symbolic_color_resolve_full (color->sym_col.mix.color1, provider, current, current_deps, &dep1);
660 color1 = *_gtk_css_rgba_value_get_rgba (val);
661 _gtk_css_value_unref (val);
663 val = _gtk_symbolic_color_resolve_full (color->sym_col.mix.color2, provider, current, current_deps, &dep2);
666 color2 = *_gtk_css_rgba_value_get_rgba (val);
667 _gtk_css_value_unref (val);
669 *dependencies = _gtk_css_dependencies_union (dep1, dep2);
670 res.red = CLAMP (color1.red + ((color2.red - color1.red) * color->sym_col.mix.factor), 0, 1);
671 res.green = CLAMP (color1.green + ((color2.green - color1.green) * color->sym_col.mix.factor), 0, 1);
672 res.blue = CLAMP (color1.blue + ((color2.blue - color1.blue) * color->sym_col.mix.factor), 0, 1);
673 res.alpha = CLAMP (color1.alpha + ((color2.alpha - color1.alpha) * color->sym_col.mix.factor), 0, 1);
675 value =_gtk_css_rgba_value_new_from_rgba (&res);
679 case COLOR_TYPE_WIN32:
683 if (!_gtk_win32_theme_color_resolve (color->sym_col.win32.theme_class,
684 color->sym_col.win32.id,
688 value = _gtk_css_rgba_value_new_from_rgba (&res);
692 case COLOR_TYPE_CURRENT_COLOR:
695 *dependencies = current_deps;
696 return _gtk_css_value_ref (current);
704 g_assert_not_reached ();
709 if (color->last_value != NULL &&
710 _gtk_css_value_equal (color->last_value, value))
712 _gtk_css_value_unref (value);
713 value = _gtk_css_value_ref (color->last_value);
717 if (color->last_value != NULL)
718 _gtk_css_value_unref (color->last_value);
719 color->last_value = _gtk_css_value_ref (value);
723 _gtk_css_rgba_value_get_rgba (value);
728 * gtk_symbolic_color_to_string:
729 * @color: color to convert to a string
731 * Converts the given @color to a string representation. This is useful
732 * both for debugging and for serialization of strings. The format of
733 * the string may change between different versions of GTK, but it is
734 * guaranteed that the GTK css parser is able to read the string and
735 * create the same symbolic color from it.
737 * Returns: a new string representing @color
740 gtk_symbolic_color_to_string (GtkSymbolicColor *color)
744 g_return_val_if_fail (color != NULL, NULL);
748 case COLOR_TYPE_LITERAL:
749 s = gdk_rgba_to_string (_gtk_css_rgba_value_get_rgba (color->last_value));
751 case COLOR_TYPE_NAME:
752 s = g_strconcat ("@", color->sym_col.name, NULL);
754 case COLOR_TYPE_SHADE:
756 char *color_string = gtk_symbolic_color_to_string (color->sym_col.shade.color);
757 char factor[G_ASCII_DTOSTR_BUF_SIZE];
759 g_ascii_dtostr (factor, sizeof (factor), color->sym_col.shade.factor);
760 s = g_strdup_printf ("shade(%s, %s)", color_string, factor);
761 g_free (color_string);
764 case COLOR_TYPE_ALPHA:
766 char *color_string = gtk_symbolic_color_to_string (color->sym_col.shade.color);
767 char factor[G_ASCII_DTOSTR_BUF_SIZE];
769 g_ascii_dtostr (factor, sizeof (factor), color->sym_col.alpha.factor);
770 s = g_strdup_printf ("alpha(%s, %s)", color_string, factor);
771 g_free (color_string);
776 char *color_string1 = gtk_symbolic_color_to_string (color->sym_col.mix.color1);
777 char *color_string2 = gtk_symbolic_color_to_string (color->sym_col.mix.color2);
778 char factor[G_ASCII_DTOSTR_BUF_SIZE];
780 g_ascii_dtostr (factor, sizeof (factor), color->sym_col.mix.factor);
781 s = g_strdup_printf ("mix(%s, %s, %s)", color_string1, color_string2, factor);
782 g_free (color_string1);
783 g_free (color_string2);
786 case COLOR_TYPE_WIN32:
788 s = g_strdup_printf (GTK_WIN32_THEME_SYMBOLIC_COLOR_NAME"(%s, %d)",
789 color->sym_col.win32.theme_class, color->sym_col.win32.id);
792 case COLOR_TYPE_CURRENT_COLOR:
793 s = g_strdup ("currentColor");
796 g_assert_not_reached ();
813 static GtkSymbolicColor * gtk_css_parser_read_symbolic_color (GtkCssParser *parser);
815 static GtkSymbolicColor *
816 gtk_css_parser_read_symbolic_color_function (GtkCssParser *parser,
817 ColorParseType color)
819 GtkSymbolicColor *symbolic;
820 GtkSymbolicColor *child1, *child2;
823 if (!_gtk_css_parser_try (parser, "(", TRUE))
825 _gtk_css_parser_error (parser, "Missing opening bracket in color definition");
829 if (color == COLOR_RGB || color == COLOR_RGBA)
835 for (i = 0; i < 3; i++)
837 if (i > 0 && !_gtk_css_parser_try (parser, ",", TRUE))
839 _gtk_css_parser_error (parser, "Expected ',' in color definition");
843 if (!_gtk_css_parser_try_double (parser, &tmp))
845 _gtk_css_parser_error (parser, "Invalid number for color value");
848 if (_gtk_css_parser_try (parser, "%", TRUE))
859 g_assert_not_reached ();
862 if (color == COLOR_RGBA)
864 if (i > 0 && !_gtk_css_parser_try (parser, ",", TRUE))
866 _gtk_css_parser_error (parser, "Expected ',' in color definition");
870 if (!_gtk_css_parser_try_double (parser, &rgba.alpha))
872 _gtk_css_parser_error (parser, "Invalid number for alpha value");
879 symbolic = gtk_symbolic_color_new_literal (&rgba);
881 else if (color == COLOR_WIN32)
883 symbolic = _gtk_win32_theme_color_parse (parser);
884 if (symbolic == NULL)
889 child1 = gtk_css_parser_read_symbolic_color (parser);
893 if (color == COLOR_MIX)
895 if (!_gtk_css_parser_try (parser, ",", TRUE))
897 _gtk_css_parser_error (parser, "Expected ',' in color definition");
898 gtk_symbolic_color_unref (child1);
902 child2 = gtk_css_parser_read_symbolic_color (parser);
905 gtk_symbolic_color_unref (child1);
912 if (color == COLOR_LIGHTER)
914 else if (color == COLOR_DARKER)
918 if (!_gtk_css_parser_try (parser, ",", TRUE))
920 _gtk_css_parser_error (parser, "Expected ',' in color definition");
921 gtk_symbolic_color_unref (child1);
923 gtk_symbolic_color_unref (child2);
927 if (!_gtk_css_parser_try_double (parser, &value))
929 _gtk_css_parser_error (parser, "Expected number in color definition");
930 gtk_symbolic_color_unref (child1);
932 gtk_symbolic_color_unref (child2);
942 symbolic = gtk_symbolic_color_new_shade (child1, value);
945 symbolic = gtk_symbolic_color_new_alpha (child1, value);
948 symbolic = gtk_symbolic_color_new_mix (child1, child2, value);
951 g_assert_not_reached ();
955 gtk_symbolic_color_unref (child1);
957 gtk_symbolic_color_unref (child2);
960 if (!_gtk_css_parser_try (parser, ")", TRUE))
962 _gtk_css_parser_error (parser, "Expected ')' in color definition");
963 gtk_symbolic_color_unref (symbolic);
970 static GtkSymbolicColor *
971 gtk_css_parser_read_symbolic_color (GtkCssParser *parser)
973 GtkSymbolicColor *symbolic;
976 const char *names[] = {"rgba", "rgb", "lighter", "darker", "shade", "alpha", "mix",
977 GTK_WIN32_THEME_SYMBOLIC_COLOR_NAME};
980 if (_gtk_css_parser_try (parser, "currentColor", TRUE))
981 return gtk_symbolic_color_ref (_gtk_symbolic_color_get_current_color ());
983 if (_gtk_css_parser_try (parser, "transparent", TRUE))
985 GdkRGBA transparent = { 0, 0, 0, 0 };
987 return gtk_symbolic_color_new_literal (&transparent);
990 if (_gtk_css_parser_try (parser, "@", FALSE))
992 name = _gtk_css_parser_try_name (parser, TRUE);
996 symbolic = gtk_symbolic_color_new_name (name);
1000 _gtk_css_parser_error (parser, "'%s' is not a valid symbolic color name", name);
1008 for (color = 0; color < G_N_ELEMENTS (names); color++)
1010 if (_gtk_css_parser_try (parser, names[color], TRUE))
1014 if (color < G_N_ELEMENTS (names))
1015 return gtk_css_parser_read_symbolic_color_function (parser, color);
1017 if (_gtk_css_parser_try_hash_color (parser, &rgba))
1018 return gtk_symbolic_color_new_literal (&rgba);
1020 name = _gtk_css_parser_try_name (parser, TRUE);
1023 if (gdk_rgba_parse (&rgba, name))
1025 symbolic = gtk_symbolic_color_new_literal (&rgba);
1029 _gtk_css_parser_error (parser, "'%s' is not a valid color name", name);
1036 _gtk_css_parser_error (parser, "Not a color definition");
1041 _gtk_css_symbolic_value_new (GtkCssParser *parser)
1043 g_return_val_if_fail (parser != NULL, NULL);
1045 return _gtk_css_symbolic_value_new_take_symbolic_color (gtk_css_parser_read_symbolic_color (parser));