/** * gtk_symbolic_color_resolve: * @color: a #GtkSymbolicColor * @props: (allow-none): #GtkStyleProperties to use when resolving * named colors, or %NULL * @resolved_color: (out): return location for the resolved color * * If @color is resolvable, @resolved_color will be filled in * with the resolved color, and %TRUE will be returned. Generally, * if @color can't be resolved, it is due to it being defined on * top of a named color that doesn't exist in @props. * * When @props is %NULL, resolving of named colors will fail, so if * your @color is or references such a color, this function will * return %FALSE. * * Returns: %TRUE if the color has been resolved * * Since: 3.0 * * Deprecated: 3.8: #GtkSymbolicColor is deprecated. **/ gboolean gtk_symbolic_color_resolve (GtkSymbolicColor *color, GtkStyleProperties *props, GdkRGBA *resolved_color) { GdkRGBA pink = { 1.0, 0.5, 0.5, 1.0 }; GtkCssValue *v, *current; g_return_val_if_fail (color != NULL, FALSE); g_return_val_if_fail (resolved_color != NULL, FALSE); g_return_val_if_fail (props == NULL || GTK_IS_STYLE_PROPERTIES (props), FALSE); current = _gtk_css_rgba_value_new_from_rgba (&pink); v = _gtk_css_color_value_resolve (color->value, GTK_STYLE_PROVIDER_PRIVATE (props), current, 0, NULL); _gtk_css_value_unref (current); if (v == NULL) return FALSE; *resolved_color = *_gtk_css_rgba_value_get_rgba (v); _gtk_css_value_unref (v); return TRUE; }
cairo_pattern_t * _gtk_gradient_resolve_full (GtkGradient *gradient, GtkStyleProviderPrivate *provider, GtkCssComputedValues *values, GtkCssComputedValues *parent_values, GtkCssDependencies *dependencies) { cairo_pattern_t *pattern; guint i; g_return_val_if_fail (gradient != NULL, NULL); g_return_val_if_fail (GTK_IS_STYLE_PROVIDER (provider), NULL); g_return_val_if_fail (GTK_IS_CSS_COMPUTED_VALUES (values), NULL); g_return_val_if_fail (parent_values == NULL || GTK_IS_CSS_COMPUTED_VALUES (parent_values), NULL); g_return_val_if_fail (*dependencies == 0, NULL); if (gradient->radius0 == 0 && gradient->radius1 == 0) pattern = cairo_pattern_create_linear (gradient->x0, gradient->y0, gradient->x1, gradient->y1); else pattern = cairo_pattern_create_radial (gradient->x0, gradient->y0, gradient->radius0, gradient->x1, gradient->y1, gradient->radius1); for (i = 0; i < gradient->stops->len; i++) { ColorStop *stop; GtkCssValue *val; GdkRGBA rgba; GtkCssDependencies stop_deps; stop = &g_array_index (gradient->stops, ColorStop, i); /* if color resolving fails, assume transparency */ val = _gtk_css_color_value_resolve (_gtk_symbolic_color_get_css_value (stop->color), provider, _gtk_css_computed_values_get_value (values, GTK_CSS_PROPERTY_COLOR), GTK_CSS_DEPENDS_ON_COLOR, &stop_deps, NULL); if (val) { rgba = *_gtk_css_rgba_value_get_rgba (val); *dependencies = _gtk_css_dependencies_union (*dependencies, stop_deps); _gtk_css_value_unref (val); } else { rgba.red = rgba.green = rgba.blue = rgba.alpha = 0.0; } cairo_pattern_add_color_stop_rgba (pattern, stop->offset, rgba.red, rgba.green, rgba.blue, rgba.alpha); } return pattern; }