forked from AuroraMiddleware/gtk
6e6cbd7316
We don't need to compare all their CSS values to figure out that nothing changed. We know that.
113 lines
3.1 KiB
C
113 lines
3.1 KiB
C
/* GTK - The GIMP Toolkit
|
|
* Copyright (C) 2015 Benjamin Otte <otte@gnome.org>
|
|
*
|
|
* 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 "gtkcssstylechangeprivate.h"
|
|
|
|
#include "gtkcssstylepropertyprivate.h"
|
|
|
|
void
|
|
gtk_css_style_change_init (GtkCssStyleChange *change,
|
|
GtkCssStyle *old_style,
|
|
GtkCssStyle *new_style)
|
|
{
|
|
change->old_style = g_object_ref (old_style);
|
|
change->new_style = g_object_ref (new_style);
|
|
|
|
change->n_compared = 0;
|
|
|
|
change->affects = 0;
|
|
change->changes = _gtk_bitmask_new ();
|
|
|
|
/* Make sure we don't do extra work if old and new are equal. */
|
|
if (old_style == new_style)
|
|
change->n_compared = GTK_CSS_PROPERTY_N_PROPERTIES;
|
|
}
|
|
|
|
void
|
|
gtk_css_style_change_finish (GtkCssStyleChange *change)
|
|
{
|
|
g_object_unref (change->old_style);
|
|
g_object_unref (change->new_style);
|
|
_gtk_bitmask_free (change->changes);
|
|
}
|
|
|
|
GtkCssStyle *
|
|
gtk_css_style_change_get_old_style (GtkCssStyleChange *change)
|
|
{
|
|
return change->old_style;
|
|
}
|
|
|
|
GtkCssStyle *
|
|
gtk_css_style_change_get_new_style (GtkCssStyleChange *change)
|
|
{
|
|
return change->new_style;
|
|
}
|
|
|
|
static gboolean
|
|
gtk_css_style_compare_next_value (GtkCssStyleChange *change)
|
|
{
|
|
if (change->n_compared == GTK_CSS_PROPERTY_N_PROPERTIES)
|
|
return FALSE;
|
|
|
|
if (!_gtk_css_value_equal (gtk_css_style_get_value (change->old_style, change->n_compared),
|
|
gtk_css_style_get_value (change->new_style, change->n_compared)))
|
|
{
|
|
change->affects |= _gtk_css_style_property_get_affects (_gtk_css_style_property_lookup_by_id (change->n_compared));
|
|
change->changes = _gtk_bitmask_set (change->changes, change->n_compared, TRUE);
|
|
}
|
|
|
|
change->n_compared++;
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
gboolean
|
|
gtk_css_style_change_has_change (GtkCssStyleChange *change)
|
|
{
|
|
do {
|
|
if (!_gtk_bitmask_is_empty (change->changes))
|
|
return TRUE;
|
|
} while (gtk_css_style_compare_next_value (change));
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
gboolean
|
|
gtk_css_style_change_affects (GtkCssStyleChange *change,
|
|
GtkCssAffects affects)
|
|
{
|
|
do {
|
|
if (change->affects & affects)
|
|
return TRUE;
|
|
} while (gtk_css_style_compare_next_value (change));
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
gboolean
|
|
gtk_css_style_change_changes_property (GtkCssStyleChange *change,
|
|
guint id)
|
|
{
|
|
while (change->n_compared <= id)
|
|
gtk_css_style_compare_next_value (change);
|
|
|
|
return _gtk_bitmask_get (change->changes, id);
|
|
}
|
|
|