gtk2/gtk/gtkcssinitialvalue.c
Benjamin Otte 0e2f35ed88 css: Introduce dependencies for value computations
When values are computed, they might depend on various other values and
we need to track this so we can update the values when those other
values change. This is the first step in making that happen.

This patch does not do any dependency tracking at all, instead it uses
GTK_CSS_DEPENDS_ON_EVERYTHING as a sort of FIXME.
2012-08-28 15:42:23 +02:00

84 lines
2.4 KiB
C

/* 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 "gtkcssinitialvalueprivate.h"
#include "gtkcssstylepropertyprivate.h"
struct _GtkCssValue {
GTK_CSS_VALUE_BASE
};
static void
gtk_css_value_initial_free (GtkCssValue *value)
{
/* Can only happen if the unique value gets unreffed too often */
g_assert_not_reached ();
}
static GtkCssValue *
gtk_css_value_initial_compute (GtkCssValue *value,
guint property_id,
GtkStyleContext *context,
GtkCssDependencies *dependencies)
{
return _gtk_css_value_compute (_gtk_css_style_property_get_initial_value (_gtk_css_style_property_lookup_by_id (property_id)),
property_id,
context,
dependencies);
}
static gboolean
gtk_css_value_initial_equal (const GtkCssValue *value1,
const GtkCssValue *value2)
{
return TRUE;
}
static GtkCssValue *
gtk_css_value_initial_transition (GtkCssValue *start,
GtkCssValue *end,
double progress)
{
return NULL;
}
static void
gtk_css_value_initial_print (const GtkCssValue *value,
GString *string)
{
g_string_append (string, "initial");
}
static const GtkCssValueClass GTK_CSS_VALUE_INITIAL = {
gtk_css_value_initial_free,
gtk_css_value_initial_compute,
gtk_css_value_initial_equal,
gtk_css_value_initial_transition,
gtk_css_value_initial_print
};
static GtkCssValue initial = { &GTK_CSS_VALUE_INITIAL, 1 };
GtkCssValue *
_gtk_css_initial_value_new (void)
{
return _gtk_css_value_ref (&initial);
}