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cssvalue: Implement dependency tracking for gradients

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This commit is contained in:
Benjamin Otte 2012-08-27 18:39:46 +02:00
parent 3cf6db8b1a
commit 3a65fbfc13
3 changed files with 28 additions and 8 deletions
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5
gtk/gtkcssstylefuncs.c
View File

@ -34,6 +34,7 @@
#include "gtkgradient.h"
#include "gtkprivatetypebuiltins.h"
#include "gtkstylecontextprivate.h"
#include "gtkstylepropertiesprivate.h"
#include "gtksymboliccolorprivate.h"
#include "gtkthemingengine.h"
#include "gtktypebuiltins.h"
@ -830,9 +831,7 @@ pattern_value_compute (GtkStyleContext *context,
GValue new_value = G_VALUE_INIT;
cairo_pattern_t *gradient;
*dependencies = GTK_CSS_DEPENDS_ON_EVERYTHING;
gradient = gtk_gradient_resolve_for_context (g_value_get_boxed (value), context);
gradient = _gtk_gradient_resolve_full (g_value_get_boxed (value), context, dependencies);
g_value_init (&new_value, CAIRO_GOBJECT_TYPE_PATTERN);
g_value_take_boxed (&new_value, gradient);

26
gtk/gtkgradient.c
View File

@ -281,14 +281,16 @@ gtk_gradient_resolve (GtkGradient *gradient,
}
cairo_pattern_t *
gtk_gradient_resolve_for_context (GtkGradient *gradient,
GtkStyleContext *context)
_gtk_gradient_resolve_full (GtkGradient *gradient,
GtkStyleContext *context,
GtkCssDependencies *dependencies)
{
cairo_pattern_t *pattern;
guint i;
g_return_val_if_fail (gradient != NULL, FALSE);
g_return_val_if_fail (GTK_IS_STYLE_CONTEXT (context), FALSE);
g_return_val_if_fail (gradient != NULL, NULL);
g_return_val_if_fail (GTK_IS_STYLE_CONTEXT (context), 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,
@ -303,13 +305,15 @@ gtk_gradient_resolve_for_context (GtkGradient *gradient,
{
ColorStop *stop;
GdkRGBA rgba;
GtkCssDependencies stop_deps;
stop = &g_array_index (gradient->stops, ColorStop, i);
/* if color resolving fails, assume transparency */
if (!_gtk_style_context_resolve_color (context, stop->color, &rgba, NULL))
if (!_gtk_style_context_resolve_color (context, stop->color, &rgba, &stop_deps))
rgba.red = rgba.green = rgba.blue = rgba.alpha = 0.0;
*dependencies = _gtk_css_dependencies_union (*dependencies, stop_deps);
cairo_pattern_add_color_stop_rgba (pattern, stop->offset,
rgba.red, rgba.green,
rgba.blue, rgba.alpha);
@ -318,6 +322,18 @@ gtk_gradient_resolve_for_context (GtkGradient *gradient,
return pattern;
}
cairo_pattern_t *
gtk_gradient_resolve_for_context (GtkGradient *gradient,
GtkStyleContext *context)
{
GtkCssDependencies ignored = 0;
g_return_val_if_fail (gradient != NULL, NULL);
g_return_val_if_fail (GTK_IS_STYLE_CONTEXT (context), NULL);
return _gtk_gradient_resolve_full (gradient, context, &ignored);
}
static void
append_number (GString *str,
double d,

5
gtk/gtkstylepropertiesprivate.h
View File

@ -33,6 +33,11 @@ void _gtk_style_properties_set_property_by_property (GtkStylePropertie
GtkStateFlags state,
GtkCssValue *value);
cairo_pattern_t *
_gtk_gradient_resolve_full (GtkGradient *gradient,
GtkStyleContext *context,
GtkCssDependencies *dependencies);
G_END_DECLS
#endif /* __GTK_STYLE_PROPERTIES_PRIVATE_H__ */