forked from AuroraMiddleware/gtk
99 lines
2.8 KiB
C
99 lines
2.8 KiB
C
/* GTK - The GIMP Toolkit
|
|
* Copyright (C) 2014 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 "gtkcssunsetvalueprivate.h"
|
|
|
|
#include "gtkcssinheritvalueprivate.h"
|
|
#include "gtkcssinitialvalueprivate.h"
|
|
#include "gtkcssstylepropertyprivate.h"
|
|
|
|
struct _GtkCssValue {
|
|
GTK_CSS_VALUE_BASE
|
|
};
|
|
|
|
static void
|
|
gtk_css_value_unset_free (GtkCssValue *value)
|
|
{
|
|
/* Can only happen if the unique value gets unreffed too often */
|
|
g_assert_not_reached ();
|
|
}
|
|
|
|
static GtkCssValue *
|
|
gtk_css_value_unset_compute (GtkCssValue *value,
|
|
guint property_id,
|
|
GtkStyleProviderPrivate *provider,
|
|
GtkCssStyle *style,
|
|
GtkCssStyle *parent_style)
|
|
{
|
|
GtkCssStyleProperty *property;
|
|
GtkCssValue *unset_value;
|
|
|
|
property = _gtk_css_style_property_lookup_by_id (property_id);
|
|
|
|
if (_gtk_css_style_property_is_inherit (property))
|
|
unset_value = _gtk_css_inherit_value_get ();
|
|
else
|
|
unset_value = _gtk_css_initial_value_get ();
|
|
|
|
return _gtk_css_value_compute (unset_value,
|
|
property_id,
|
|
provider,
|
|
style,
|
|
parent_style);
|
|
}
|
|
|
|
static gboolean
|
|
gtk_css_value_unset_equal (const GtkCssValue *value1,
|
|
const GtkCssValue *value2)
|
|
{
|
|
return TRUE;
|
|
}
|
|
|
|
static GtkCssValue *
|
|
gtk_css_value_unset_transition (GtkCssValue *start,
|
|
GtkCssValue *end,
|
|
guint property_id,
|
|
double progress)
|
|
{
|
|
return NULL;
|
|
}
|
|
|
|
static void
|
|
gtk_css_value_unset_print (const GtkCssValue *value,
|
|
GString *string)
|
|
{
|
|
g_string_append (string, "unset");
|
|
}
|
|
|
|
static const GtkCssValueClass GTK_CSS_VALUE_UNSET = {
|
|
gtk_css_value_unset_free,
|
|
gtk_css_value_unset_compute,
|
|
gtk_css_value_unset_equal,
|
|
gtk_css_value_unset_transition,
|
|
gtk_css_value_unset_print
|
|
};
|
|
|
|
static GtkCssValue unset = { >K_CSS_VALUE_UNSET, 1 };
|
|
|
|
GtkCssValue *
|
|
_gtk_css_unset_value_new (void)
|
|
{
|
|
return _gtk_css_value_ref (&unset);
|
|
}
|