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 "gtkstylepropertyprivate.h"
22 #include "gtksymboliccolorprivate.h"
23 #include "gtkstyleproperties.h"
25 #include "gtkwin32themeprivate.h"
28 * SECTION:gtksymboliccolor
29 * @Short_description: Symbolic colors
30 * @Title: GtkSymbolicColor
32 * GtkSymbolicColor is a boxed type that represents a symbolic color.
33 * It is the result of parsing a
34 * <link linkend="gtkcssprovider-symbolic-colors">color expression</link>.
35 * To obtain the color represented by a GtkSymbolicColor, it has to
36 * be resolved with gtk_symbolic_color_resolve(), which replaces all
37 * symbolic color references by the colors they refer to (in a given
38 * context) and evaluates mix, shade and other expressions, resulting
39 * in a #GdkRGBA value.
41 * It is not normally necessary to deal directly with #GtkSymbolicColors,
42 * since they are mostly used behind the scenes by #GtkStyleContext and
46 G_DEFINE_BOXED_TYPE (GtkSymbolicColor, gtk_symbolic_color,
47 gtk_symbolic_color_ref, gtk_symbolic_color_unref)
57 COLOR_TYPE_CURRENT_COLOR
60 struct _GtkSymbolicColor
64 GtkCssValue *last_value;
72 GtkSymbolicColor *color;
78 GtkSymbolicColor *color1;
79 GtkSymbolicColor *color2;
92 gtk_css_value_symbolic_free (GtkCssValue *value)
94 GtkSymbolicColor *color = (GtkSymbolicColor *) value;
96 _gtk_css_value_unref (color->last_value);
100 g_free (color->name);
102 case COLOR_TYPE_SHADE:
103 gtk_symbolic_color_unref (color->shade.color);
105 case COLOR_TYPE_ALPHA:
106 gtk_symbolic_color_unref (color->alpha.color);
109 gtk_symbolic_color_unref (color->mix.color1);
110 gtk_symbolic_color_unref (color->mix.color2);
112 case COLOR_TYPE_WIN32:
113 g_free (color->win32.theme_class);
119 g_slice_free (GtkSymbolicColor, color);
123 gtk_css_value_symbolic_get_fallback (guint property_id,
124 GtkStyleContext *context)
126 static const GdkRGBA transparent = { 0, 0, 0, 0 };
130 case GTK_CSS_PROPERTY_BACKGROUND_IMAGE:
131 case GTK_CSS_PROPERTY_BORDER_IMAGE_SOURCE:
132 case GTK_CSS_PROPERTY_TEXT_SHADOW:
133 case GTK_CSS_PROPERTY_ICON_SHADOW:
134 case GTK_CSS_PROPERTY_BOX_SHADOW:
135 return _gtk_css_rgba_value_new_from_rgba (&transparent);
136 case GTK_CSS_PROPERTY_COLOR:
137 case GTK_CSS_PROPERTY_BACKGROUND_COLOR:
138 case GTK_CSS_PROPERTY_BORDER_TOP_COLOR:
139 case GTK_CSS_PROPERTY_BORDER_RIGHT_COLOR:
140 case GTK_CSS_PROPERTY_BORDER_BOTTOM_COLOR:
141 case GTK_CSS_PROPERTY_BORDER_LEFT_COLOR:
142 case GTK_CSS_PROPERTY_OUTLINE_COLOR:
143 return _gtk_css_value_compute (_gtk_css_style_property_get_initial_value (_gtk_css_style_property_lookup_by_id (property_id)),
148 if (property_id < GTK_CSS_PROPERTY_N_PROPERTIES)
149 g_warning ("No fallback color defined for property '%s'",
150 _gtk_style_property_get_name (GTK_STYLE_PROPERTY (_gtk_css_style_property_lookup_by_id (property_id))));
151 return _gtk_css_rgba_value_new_from_rgba (&transparent);
156 gtk_css_value_symbolic_compute (GtkCssValue *value,
158 GtkStyleContext *context,
159 GtkCssDependencies *dependencies)
161 GtkCssValue *resolved, *current;
162 GtkCssDependencies current_deps;
164 /* The computed value of the ‘currentColor’ keyword is the computed
165 * value of the ‘color’ property. If the ‘currentColor’ keyword is
166 * set on the ‘color’ property itself, it is treated as ‘color: inherit’.
168 if (property_id == GTK_CSS_PROPERTY_COLOR)
170 GtkStyleContext *parent = gtk_style_context_get_parent (context);
174 current = _gtk_style_context_peek_property (parent, GTK_CSS_PROPERTY_COLOR);
175 current_deps = GTK_CSS_EQUALS_PARENT;
179 current = _gtk_css_style_property_get_initial_value (_gtk_css_style_property_lookup_by_id (GTK_CSS_PROPERTY_COLOR));
185 current = _gtk_style_context_peek_property (context, GTK_CSS_PROPERTY_COLOR);
186 current_deps = GTK_CSS_DEPENDS_ON_COLOR;
189 resolved = _gtk_style_context_resolve_color_value (context, current, current_deps, value, dependencies);
191 if (resolved == NULL)
192 return gtk_css_value_symbolic_get_fallback (property_id, context);
198 gtk_css_value_symbolic_equal (const GtkCssValue *value1,
199 const GtkCssValue *value2)
201 GtkSymbolicColor *color1 = (GtkSymbolicColor *) value1;
202 GtkSymbolicColor *color2 = (GtkSymbolicColor *) value2;
204 if (color1->type != color2->type)
207 switch (color1->type)
209 case COLOR_TYPE_LITERAL:
210 return _gtk_css_value_equal (color1->last_value, color2->last_value);
211 case COLOR_TYPE_NAME:
212 return g_str_equal (color1->name, color2->name);
213 case COLOR_TYPE_SHADE:
214 return color1->shade.factor == color2->shade.factor &&
215 _gtk_css_value_equal ((GtkCssValue *) color1->shade.color,
216 (GtkCssValue *) color2->shade.color);
217 case COLOR_TYPE_ALPHA:
218 return color1->alpha.factor == color2->alpha.factor &&
219 _gtk_css_value_equal ((GtkCssValue *) color1->alpha.color,
220 (GtkCssValue *) color2->alpha.color);
222 return color1->mix.factor == color2->mix.factor &&
223 _gtk_css_value_equal ((GtkCssValue *) color1->mix.color1,
224 (GtkCssValue *) color2->mix.color1) &&
225 _gtk_css_value_equal ((GtkCssValue *) color1->mix.color2,
226 (GtkCssValue *) color2->mix.color2);
227 case COLOR_TYPE_WIN32:
228 return g_str_equal (color1->win32.theme_class, color2->win32.theme_class) &&
229 color1->win32.id == color2->win32.id;
230 case COLOR_TYPE_CURRENT_COLOR:
233 g_assert_not_reached ();
239 gtk_css_value_symbolic_transition (GtkCssValue *start,
247 gtk_css_value_symbolic_print (const GtkCssValue *value,
250 GtkSymbolicColor *color = (GtkSymbolicColor *) value;
253 s = gtk_symbolic_color_to_string (color);
254 g_string_append (string, s);
258 static const GtkCssValueClass GTK_CSS_VALUE_SYMBOLIC = {
259 gtk_css_value_symbolic_free,
260 gtk_css_value_symbolic_compute,
261 gtk_css_value_symbolic_equal,
262 gtk_css_value_symbolic_transition,
263 gtk_css_value_symbolic_print
267 * gtk_symbolic_color_new_literal:
270 * Creates a symbolic color pointing to a literal color.
272 * Returns: a newly created #GtkSymbolicColor
277 gtk_symbolic_color_new_literal (const GdkRGBA *color)
279 GtkSymbolicColor *symbolic_color;
281 g_return_val_if_fail (color != NULL, NULL);
283 symbolic_color = _gtk_css_value_new (GtkSymbolicColor, >K_CSS_VALUE_SYMBOLIC);
284 symbolic_color->type = COLOR_TYPE_LITERAL;
285 symbolic_color->last_value = _gtk_css_rgba_value_new_from_rgba (color);
287 return symbolic_color;
291 * gtk_symbolic_color_new_name:
294 * Creates a symbolic color pointing to an unresolved named
295 * color. See gtk_style_context_lookup_color() and
296 * gtk_style_properties_lookup_color().
298 * Returns: a newly created #GtkSymbolicColor
303 gtk_symbolic_color_new_name (const gchar *name)
305 GtkSymbolicColor *symbolic_color;
307 g_return_val_if_fail (name != NULL, NULL);
309 symbolic_color = _gtk_css_value_new (GtkSymbolicColor, >K_CSS_VALUE_SYMBOLIC);
310 symbolic_color->type = COLOR_TYPE_NAME;
311 symbolic_color->name = g_strdup (name);
313 return symbolic_color;
317 * gtk_symbolic_color_new_shade: (constructor)
318 * @color: another #GtkSymbolicColor
319 * @factor: shading factor to apply to @color
321 * Creates a symbolic color defined as a shade of
322 * another color. A factor > 1.0 would resolve to
323 * a brighter color, while < 1.0 would resolve to
326 * Returns: A newly created #GtkSymbolicColor
331 gtk_symbolic_color_new_shade (GtkSymbolicColor *color,
334 GtkSymbolicColor *symbolic_color;
336 g_return_val_if_fail (color != NULL, NULL);
338 symbolic_color = _gtk_css_value_new (GtkSymbolicColor, >K_CSS_VALUE_SYMBOLIC);
339 symbolic_color->type = COLOR_TYPE_SHADE;
340 symbolic_color->shade.color = gtk_symbolic_color_ref (color);
341 symbolic_color->shade.factor = factor;
343 return symbolic_color;
347 * gtk_symbolic_color_new_alpha: (constructor)
348 * @color: another #GtkSymbolicColor
349 * @factor: factor to apply to @color alpha
351 * Creates a symbolic color by modifying the relative alpha
352 * value of @color. A factor < 1.0 would resolve to a more
353 * transparent color, while > 1.0 would resolve to a more
356 * Returns: A newly created #GtkSymbolicColor
361 gtk_symbolic_color_new_alpha (GtkSymbolicColor *color,
364 GtkSymbolicColor *symbolic_color;
366 g_return_val_if_fail (color != NULL, NULL);
368 symbolic_color = _gtk_css_value_new (GtkSymbolicColor, >K_CSS_VALUE_SYMBOLIC);
369 symbolic_color->type = COLOR_TYPE_ALPHA;
370 symbolic_color->alpha.color = gtk_symbolic_color_ref (color);
371 symbolic_color->alpha.factor = factor;
373 return symbolic_color;
377 * gtk_symbolic_color_new_mix: (constructor)
378 * @color1: color to mix
379 * @color2: another color to mix
380 * @factor: mix factor
382 * Creates a symbolic color defined as a mix of another
383 * two colors. a mix factor of 0 would resolve to @color1,
384 * while a factor of 1 would resolve to @color2.
386 * Returns: A newly created #GtkSymbolicColor
391 gtk_symbolic_color_new_mix (GtkSymbolicColor *color1,
392 GtkSymbolicColor *color2,
395 GtkSymbolicColor *symbolic_color;
397 g_return_val_if_fail (color1 != NULL, NULL);
398 g_return_val_if_fail (color1 != NULL, NULL);
400 symbolic_color = _gtk_css_value_new (GtkSymbolicColor, >K_CSS_VALUE_SYMBOLIC);
401 symbolic_color->type = COLOR_TYPE_MIX;
402 symbolic_color->mix.color1 = gtk_symbolic_color_ref (color1);
403 symbolic_color->mix.color2 = gtk_symbolic_color_ref (color2);
404 symbolic_color->mix.factor = factor;
406 return symbolic_color;
410 * gtk_symbolic_color_new_win32: (constructor)
411 * @theme_class: The theme class to pull color from
414 * Creates a symbolic color based on the current win32
417 * Note that while this call is available on all platforms
418 * the actual value returned is not reliable on non-win32
421 * Returns: A newly created #GtkSymbolicColor
426 gtk_symbolic_color_new_win32 (const gchar *theme_class,
429 GtkSymbolicColor *symbolic_color;
431 g_return_val_if_fail (theme_class != NULL, NULL);
433 symbolic_color = _gtk_css_value_new (GtkSymbolicColor, >K_CSS_VALUE_SYMBOLIC);
434 symbolic_color->type = COLOR_TYPE_WIN32;
435 symbolic_color->win32.theme_class = g_strdup (theme_class);
436 symbolic_color->win32.id = id;
438 return symbolic_color;
442 * _gtk_symbolic_color_get_current_color:
444 * Gets the color representing the CSS 'currentColor' keyword.
445 * This color will resolve to the color set for the color property.
447 * Returns: (transfer none): The singleton representing the
448 * 'currentColor' keyword
451 _gtk_symbolic_color_get_current_color (void)
453 static GtkSymbolicColor *current_color = NULL;
455 if (G_UNLIKELY (current_color == NULL))
457 current_color = _gtk_css_value_new (GtkSymbolicColor, >K_CSS_VALUE_SYMBOLIC);
458 current_color->type = COLOR_TYPE_CURRENT_COLOR;
461 return current_color;
465 * gtk_symbolic_color_ref:
466 * @color: a #GtkSymbolicColor
468 * Increases the reference count of @color
470 * Returns: the same @color
475 gtk_symbolic_color_ref (GtkSymbolicColor *color)
477 g_return_val_if_fail (color != NULL, NULL);
479 _gtk_css_value_ref ((GtkCssValue *) color);
485 * gtk_symbolic_color_unref:
486 * @color: a #GtkSymbolicColor
488 * Decreases the reference count of @color, freeing its memory if the
489 * reference count reaches 0.
494 gtk_symbolic_color_unref (GtkSymbolicColor *color)
496 g_return_if_fail (color != NULL);
498 _gtk_css_value_unref ((GtkCssValue *) color);
502 rgb_to_hls (gdouble *r,
550 s = (max - min) / (max + min);
552 s = (max - min) / (2 - max - min);
556 h = (green - blue) / delta;
557 else if (green == max)
558 h = 2 + (blue - red) / delta;
559 else if (blue == max)
560 h = 4 + (red - green) / delta;
573 hls_to_rgb (gdouble *h,
586 if (lightness <= 0.5)
587 m2 = lightness * (1 + saturation);
589 m2 = lightness + saturation - lightness * saturation;
590 m1 = 2 * lightness - m2;
607 r = m1 + (m2 - m1) * hue / 60;
611 r = m1 + (m2 - m1) * (240 - hue) / 60;
622 g = m1 + (m2 - m1) * hue / 60;
626 g = m1 + (m2 - m1) * (240 - hue) / 60;
637 b = m1 + (m2 - m1) * hue / 60;
641 b = m1 + (m2 - m1) * (240 - hue) / 60;
652 _shade_color (GdkRGBA *color,
658 rgb_to_hls (&temp.red, &temp.green, &temp.blue);
660 temp.green *= factor;
661 if (temp.green > 1.0)
663 else if (temp.green < 0.0)
669 else if (temp.blue < 0.0)
672 hls_to_rgb (&temp.red, &temp.green, &temp.blue);
676 static GtkSymbolicColor *
677 resolve_lookup_color (gpointer data, const char *name)
682 return gtk_style_properties_lookup_color (data, name);
686 * gtk_symbolic_color_resolve:
687 * @color: a #GtkSymbolicColor
688 * @props: (allow-none): #GtkStyleProperties to use when resolving
689 * named colors, or %NULL
690 * @resolved_color: (out): return location for the resolved color
692 * If @color is resolvable, @resolved_color will be filled in
693 * with the resolved color, and %TRUE will be returned. Generally,
694 * if @color can't be resolved, it is due to it being defined on
695 * top of a named color that doesn't exist in @props.
697 * When @props is %NULL, resolving of named colors will fail, so if
698 * your @color is or references such a color, this function will
701 * Returns: %TRUE if the color has been resolved
706 gtk_symbolic_color_resolve (GtkSymbolicColor *color,
707 GtkStyleProperties *props,
708 GdkRGBA *resolved_color)
710 GdkRGBA pink = { 1.0, 0.5, 0.5, 1.0 };
711 GtkCssValue *v, *current;
713 g_return_val_if_fail (color != NULL, FALSE);
714 g_return_val_if_fail (resolved_color != NULL, FALSE);
715 g_return_val_if_fail (props == NULL || GTK_IS_STYLE_PROPERTIES (props), FALSE);
717 current = _gtk_css_rgba_value_new_from_rgba (&pink);
718 v =_gtk_symbolic_color_resolve_full (color,
721 resolve_lookup_color,
724 _gtk_css_value_unref (current);
728 *resolved_color = *_gtk_css_rgba_value_get_rgba (v);
729 _gtk_css_value_unref (v);
734 _gtk_symbolic_color_resolve_full (GtkSymbolicColor *color,
735 GtkCssValue *current,
736 GtkCssDependencies current_deps,
737 GtkSymbolicColorLookupFunc func,
739 GtkCssDependencies *dependencies)
741 GtkCssDependencies unused;
744 g_return_val_if_fail (color != NULL, FALSE);
745 g_return_val_if_fail (current != NULL, FALSE);
746 g_return_val_if_fail (func != NULL, FALSE);
748 if (dependencies == NULL)
749 dependencies = &unused;
755 case COLOR_TYPE_LITERAL:
756 return _gtk_css_value_ref (color->last_value);
757 case COLOR_TYPE_NAME:
759 GtkSymbolicColor *named_color;
761 named_color = func (data, color->name);
766 return _gtk_symbolic_color_resolve_full (named_color, current, current_deps, func, data, dependencies);
770 case COLOR_TYPE_SHADE:
775 val = _gtk_symbolic_color_resolve_full (color->shade.color, current, current_deps, func, data, dependencies);
779 *dependencies = _gtk_css_dependencies_union (*dependencies, 0);
780 shade = *_gtk_css_rgba_value_get_rgba (val);
781 _shade_color (&shade, color->shade.factor);
783 _gtk_css_value_unref (val);
785 value = _gtk_css_rgba_value_new_from_rgba (&shade);
789 case COLOR_TYPE_ALPHA:
794 val = _gtk_symbolic_color_resolve_full (color->alpha.color, current, current_deps, func, data, dependencies);
798 *dependencies = _gtk_css_dependencies_union (*dependencies, 0);
799 alpha = *_gtk_css_rgba_value_get_rgba (val);
800 alpha.alpha = CLAMP (alpha.alpha * color->alpha.factor, 0, 1);
802 _gtk_css_value_unref (val);
804 value = _gtk_css_rgba_value_new_from_rgba (&alpha);
811 GdkRGBA color1, color2, res;
812 GtkCssDependencies dep1, dep2;
814 val = _gtk_symbolic_color_resolve_full (color->mix.color1, current, current_deps, func, data, &dep1);
817 color1 = *_gtk_css_rgba_value_get_rgba (val);
818 _gtk_css_value_unref (val);
820 val = _gtk_symbolic_color_resolve_full (color->mix.color2, current, current_deps, func, data, &dep2);
823 color2 = *_gtk_css_rgba_value_get_rgba (val);
824 _gtk_css_value_unref (val);
826 *dependencies = _gtk_css_dependencies_union (dep1, dep2);
827 res.red = CLAMP (color1.red + ((color2.red - color1.red) * color->mix.factor), 0, 1);
828 res.green = CLAMP (color1.green + ((color2.green - color1.green) * color->mix.factor), 0, 1);
829 res.blue = CLAMP (color1.blue + ((color2.blue - color1.blue) * color->mix.factor), 0, 1);
830 res.alpha = CLAMP (color1.alpha + ((color2.alpha - color1.alpha) * color->mix.factor), 0, 1);
832 value =_gtk_css_rgba_value_new_from_rgba (&res);
836 case COLOR_TYPE_WIN32:
840 if (!_gtk_win32_theme_color_resolve (color->win32.theme_class,
845 value = _gtk_css_rgba_value_new_from_rgba (&res);
849 case COLOR_TYPE_CURRENT_COLOR:
852 *dependencies = current_deps;
853 return _gtk_css_value_ref (current);
861 g_assert_not_reached ();
866 if (color->last_value != NULL &&
867 _gtk_css_value_equal (color->last_value, value))
869 _gtk_css_value_unref (value);
870 value = _gtk_css_value_ref (color->last_value);
874 if (color->last_value != NULL)
875 _gtk_css_value_unref (color->last_value);
876 color->last_value = _gtk_css_value_ref (value);
880 _gtk_css_rgba_value_get_rgba (value);
885 * gtk_symbolic_color_to_string:
886 * @color: color to convert to a string
888 * Converts the given @color to a string representation. This is useful
889 * both for debugging and for serialization of strings. The format of
890 * the string may change between different versions of GTK, but it is
891 * guaranteed that the GTK css parser is able to read the string and
892 * create the same symbolic color from it.
894 * Returns: a new string representing @color
897 gtk_symbolic_color_to_string (GtkSymbolicColor *color)
901 g_return_val_if_fail (color != NULL, NULL);
905 case COLOR_TYPE_LITERAL:
906 s = gdk_rgba_to_string (_gtk_css_rgba_value_get_rgba (color->last_value));
908 case COLOR_TYPE_NAME:
909 s = g_strconcat ("@", color->name, NULL);
911 case COLOR_TYPE_SHADE:
913 char *color_string = gtk_symbolic_color_to_string (color->shade.color);
914 char factor[G_ASCII_DTOSTR_BUF_SIZE];
916 g_ascii_dtostr (factor, sizeof (factor), color->shade.factor);
917 s = g_strdup_printf ("shade (%s, %s)", color_string, factor);
918 g_free (color_string);
921 case COLOR_TYPE_ALPHA:
923 char *color_string = gtk_symbolic_color_to_string (color->shade.color);
924 char factor[G_ASCII_DTOSTR_BUF_SIZE];
926 g_ascii_dtostr (factor, sizeof (factor), color->alpha.factor);
927 s = g_strdup_printf ("alpha (%s, %s)", color_string, factor);
928 g_free (color_string);
933 char *color_string1 = gtk_symbolic_color_to_string (color->mix.color1);
934 char *color_string2 = gtk_symbolic_color_to_string (color->mix.color2);
935 char factor[G_ASCII_DTOSTR_BUF_SIZE];
937 g_ascii_dtostr (factor, sizeof (factor), color->mix.factor);
938 s = g_strdup_printf ("mix (%s, %s, %s)", color_string1, color_string2, factor);
939 g_free (color_string1);
940 g_free (color_string2);
943 case COLOR_TYPE_WIN32:
945 s = g_strdup_printf (GTK_WIN32_THEME_SYMBOLIC_COLOR_NAME"(%s, %d)",
946 color->win32.theme_class, color->win32.id);
949 case COLOR_TYPE_CURRENT_COLOR:
950 s = g_strdup ("currentColor");
953 g_assert_not_reached ();
970 static GtkSymbolicColor * gtk_css_parser_read_symbolic_color (GtkCssParser *parser);
972 static GtkSymbolicColor *
973 gtk_css_parser_read_symbolic_color_function (GtkCssParser *parser,
974 ColorParseType color)
976 GtkSymbolicColor *symbolic;
977 GtkSymbolicColor *child1, *child2;
980 if (!_gtk_css_parser_try (parser, "(", TRUE))
982 _gtk_css_parser_error (parser, "Missing opening bracket in color definition");
986 if (color == COLOR_RGB || color == COLOR_RGBA)
992 for (i = 0; i < 3; i++)
994 if (i > 0 && !_gtk_css_parser_try (parser, ",", TRUE))
996 _gtk_css_parser_error (parser, "Expected ',' in color definition");
1000 if (!_gtk_css_parser_try_double (parser, &tmp))
1002 _gtk_css_parser_error (parser, "Invalid number for color value");
1005 if (_gtk_css_parser_try (parser, "%", TRUE))
1016 g_assert_not_reached ();
1019 if (color == COLOR_RGBA)
1021 if (i > 0 && !_gtk_css_parser_try (parser, ",", TRUE))
1023 _gtk_css_parser_error (parser, "Expected ',' in color definition");
1027 if (!_gtk_css_parser_try_double (parser, &rgba.alpha))
1029 _gtk_css_parser_error (parser, "Invalid number for alpha value");
1036 symbolic = gtk_symbolic_color_new_literal (&rgba);
1038 else if (color == COLOR_WIN32)
1040 symbolic = _gtk_win32_theme_color_parse (parser);
1041 if (symbolic == NULL)
1046 child1 = gtk_css_parser_read_symbolic_color (parser);
1050 if (color == COLOR_MIX)
1052 if (!_gtk_css_parser_try (parser, ",", TRUE))
1054 _gtk_css_parser_error (parser, "Expected ',' in color definition");
1055 gtk_symbolic_color_unref (child1);
1059 child2 = gtk_css_parser_read_symbolic_color (parser);
1062 gtk_symbolic_color_unref (child1);
1069 if (color == COLOR_LIGHTER)
1071 else if (color == COLOR_DARKER)
1075 if (!_gtk_css_parser_try (parser, ",", TRUE))
1077 _gtk_css_parser_error (parser, "Expected ',' in color definition");
1078 gtk_symbolic_color_unref (child1);
1080 gtk_symbolic_color_unref (child2);
1084 if (!_gtk_css_parser_try_double (parser, &value))
1086 _gtk_css_parser_error (parser, "Expected number in color definition");
1087 gtk_symbolic_color_unref (child1);
1089 gtk_symbolic_color_unref (child2);
1099 symbolic = gtk_symbolic_color_new_shade (child1, value);
1102 symbolic = gtk_symbolic_color_new_alpha (child1, value);
1105 symbolic = gtk_symbolic_color_new_mix (child1, child2, value);
1108 g_assert_not_reached ();
1112 gtk_symbolic_color_unref (child1);
1114 gtk_symbolic_color_unref (child2);
1117 if (!_gtk_css_parser_try (parser, ")", TRUE))
1119 _gtk_css_parser_error (parser, "Expected ')' in color definition");
1120 gtk_symbolic_color_unref (symbolic);
1127 static GtkSymbolicColor *
1128 gtk_css_parser_read_symbolic_color (GtkCssParser *parser)
1130 GtkSymbolicColor *symbolic;
1133 const char *names[] = {"rgba", "rgb", "lighter", "darker", "shade", "alpha", "mix",
1134 GTK_WIN32_THEME_SYMBOLIC_COLOR_NAME};
1137 if (_gtk_css_parser_try (parser, "currentColor", TRUE))
1138 return gtk_symbolic_color_ref (_gtk_symbolic_color_get_current_color ());
1140 if (_gtk_css_parser_try (parser, "transparent", TRUE))
1142 GdkRGBA transparent = { 0, 0, 0, 0 };
1144 return gtk_symbolic_color_new_literal (&transparent);
1147 if (_gtk_css_parser_try (parser, "@", FALSE))
1149 name = _gtk_css_parser_try_name (parser, TRUE);
1153 symbolic = gtk_symbolic_color_new_name (name);
1157 _gtk_css_parser_error (parser, "'%s' is not a valid symbolic color name", name);
1165 for (color = 0; color < G_N_ELEMENTS (names); color++)
1167 if (_gtk_css_parser_try (parser, names[color], TRUE))
1171 if (color < G_N_ELEMENTS (names))
1172 return gtk_css_parser_read_symbolic_color_function (parser, color);
1174 if (_gtk_css_parser_try_hash_color (parser, &rgba))
1175 return gtk_symbolic_color_new_literal (&rgba);
1177 name = _gtk_css_parser_try_name (parser, TRUE);
1180 if (gdk_rgba_parse (&rgba, name))
1182 symbolic = gtk_symbolic_color_new_literal (&rgba);
1186 _gtk_css_parser_error (parser, "'%s' is not a valid color name", name);
1193 _gtk_css_parser_error (parser, "Not a color definition");
1198 _gtk_css_symbolic_value_new (GtkCssParser *parser)
1200 g_return_val_if_fail (parser != NULL, NULL);
1202 return _gtk_css_symbolic_value_new_take_symbolic_color (gtk_css_parser_read_symbolic_color (parser));