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/* GTK - The GIMP Toolkit
* Copyright (C) 2011 Red Hat, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
*/
#include "config.h"
#include "gtkcssrgbavalueprivate.h"
#include "gtkstylecontextprivate.h"
#include "gtksymboliccolorprivate.h"
struct _GtkCssValue {
GTK_CSS_VALUE_BASE
GdkRGBA rgba;
};
static void
gtk_css_value_rgba_free (GtkCssValue *value)
{
g_slice_free (GtkCssValue, value);
}
static gboolean
gtk_css_value_rgba_equal (const GtkCssValue *rgba1,
const GtkCssValue *rgba2)
{
return gdk_rgba_equal (&rgba1->rgba, &rgba2->rgba);
}
static void
gtk_css_value_rgba_print (const GtkCssValue *rgba,
GString *string)
{
char *s = gdk_rgba_to_string (&rgba->rgba);
g_string_append (string, s);
g_free (s);
}
static const GtkCssValueClass GTK_CSS_VALUE_RGBA = {
gtk_css_value_rgba_free,
gtk_css_value_rgba_equal,
gtk_css_value_rgba_print
};
GtkCssValue *
_gtk_css_rgba_value_new_from_rgba (const GdkRGBA *rgba)
{
GtkCssValue *value;
g_return_val_if_fail (rgba != NULL, NULL);
value = _gtk_css_value_new (GtkCssValue, >K_CSS_VALUE_RGBA);
value->rgba = *rgba;
return value;
}
const GdkRGBA *
_gtk_css_rgba_value_get_rgba (const GtkCssValue *rgba)
{
g_return_val_if_fail (rgba->class == >K_CSS_VALUE_RGBA, NULL);
return &rgba->rgba;
}
GtkCssValue *
_gtk_css_rgba_value_compute_from_symbolic (GtkCssValue *rgba,
GtkCssValue *fallback,
GtkStyleContext *context,
gboolean for_color_property)
{
GtkSymbolicColor *symbolic;
GtkCssValue *resolved;
g_return_val_if_fail (rgba != NULL, NULL);
symbolic = _gtk_css_value_get_symbolic_color (rgba);
if (symbolic == _gtk_symbolic_color_get_current_color ())
{
/* The computed value of the ‘currentColor’ keyword is the computed
* value of the ‘color’ property. If the ‘currentColor’ keyword is
* set on the ‘color’ property itself, it is treated as ‘color: inherit’.
*/
if (for_color_property)
{
GtkStyleContext *parent = gtk_style_context_get_parent (context);
if (parent)
return _gtk_css_value_ref (_gtk_style_context_peek_property (parent, "color"));
else
return _gtk_css_rgba_value_compute_from_symbolic (fallback, NULL, context, TRUE);
}
else
{
return _gtk_css_value_ref (_gtk_style_context_peek_property (context, "color"));
}
}
resolved = _gtk_style_context_resolve_color_value (context, symbolic);
if (resolved == NULL)
return _gtk_css_rgba_value_compute_from_symbolic (fallback, NULL, context, for_color_property);
g_assert (resolved->class == >K_CSS_VALUE_RGBA);
return resolved;
}
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