forked from AuroraMiddleware/gtk
4168e0385e
GtkCssStyle is the base class to be used for all types of styles that do exist. GtkCssAnimatedStyle is the only implementation so far, that is exactly a copy/paste of the old GtkCssStyle code.
141 lines
4.3 KiB
C
141 lines
4.3 KiB
C
/*
|
|
* Copyright © 2012 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 2.1 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/>.
|
|
*
|
|
* Authors: Benjamin Otte <otte@gnome.org>
|
|
*/
|
|
|
|
#include "config.h"
|
|
|
|
#include "gtkcsstransitionprivate.h"
|
|
|
|
#include "gtkcsseasevalueprivate.h"
|
|
|
|
G_DEFINE_TYPE (GtkCssTransition, _gtk_css_transition, GTK_TYPE_STYLE_ANIMATION)
|
|
|
|
static void
|
|
gtk_css_transition_set_values (GtkStyleAnimation *animation,
|
|
gint64 for_time_us,
|
|
GtkCssAnimatedStyle *style)
|
|
{
|
|
GtkCssTransition *transition = GTK_CSS_TRANSITION (animation);
|
|
GtkCssValue *value, *end;
|
|
double progress;
|
|
|
|
end = gtk_css_animated_style_get_intrinsic_value (style, transition->property);
|
|
|
|
if (transition->start_time >= for_time_us)
|
|
value = _gtk_css_value_ref (transition->start);
|
|
else if (transition->end_time > for_time_us)
|
|
{
|
|
progress = (double) (for_time_us - transition->start_time) / (transition->end_time - transition->start_time);
|
|
progress = _gtk_css_ease_value_transform (transition->ease, progress);
|
|
|
|
value = _gtk_css_value_transition (transition->start,
|
|
end,
|
|
transition->property,
|
|
progress);
|
|
if (value == NULL)
|
|
value = _gtk_css_value_ref (end);
|
|
}
|
|
else
|
|
value = NULL;
|
|
|
|
if (value)
|
|
{
|
|
gtk_css_animated_style_set_animated_value (style, transition->property, value);
|
|
_gtk_css_value_unref (value);
|
|
}
|
|
}
|
|
|
|
static gboolean
|
|
gtk_css_transition_is_finished (GtkStyleAnimation *animation,
|
|
gint64 at_time_us)
|
|
{
|
|
GtkCssTransition *transition = GTK_CSS_TRANSITION (animation);
|
|
|
|
return at_time_us >= transition->end_time;
|
|
}
|
|
|
|
static gboolean
|
|
gtk_css_transition_is_static (GtkStyleAnimation *animation,
|
|
gint64 at_time_us)
|
|
{
|
|
GtkCssTransition *transition = GTK_CSS_TRANSITION (animation);
|
|
|
|
return at_time_us >= transition->end_time;
|
|
}
|
|
|
|
static void
|
|
gtk_css_transition_finalize (GObject *object)
|
|
{
|
|
GtkCssTransition *transition = GTK_CSS_TRANSITION (object);
|
|
|
|
_gtk_css_value_unref (transition->start);
|
|
_gtk_css_value_unref (transition->ease);
|
|
|
|
G_OBJECT_CLASS (_gtk_css_transition_parent_class)->finalize (object);
|
|
}
|
|
|
|
static void
|
|
_gtk_css_transition_class_init (GtkCssTransitionClass *klass)
|
|
{
|
|
GObjectClass *object_class = G_OBJECT_CLASS (klass);
|
|
GtkStyleAnimationClass *animation_class = GTK_STYLE_ANIMATION_CLASS (klass);
|
|
|
|
object_class->finalize = gtk_css_transition_finalize;
|
|
|
|
animation_class->set_values = gtk_css_transition_set_values;
|
|
animation_class->is_finished = gtk_css_transition_is_finished;
|
|
animation_class->is_static = gtk_css_transition_is_static;
|
|
}
|
|
|
|
static void
|
|
_gtk_css_transition_init (GtkCssTransition *transition)
|
|
{
|
|
}
|
|
|
|
GtkStyleAnimation *
|
|
_gtk_css_transition_new (guint property,
|
|
GtkCssValue *start,
|
|
GtkCssValue *ease,
|
|
gint64 start_time_us,
|
|
gint64 end_time_us)
|
|
{
|
|
GtkCssTransition *transition;
|
|
|
|
g_return_val_if_fail (start != NULL, NULL);
|
|
g_return_val_if_fail (ease != NULL, NULL);
|
|
g_return_val_if_fail (start_time_us <= end_time_us, NULL);
|
|
|
|
transition = g_object_new (GTK_TYPE_CSS_TRANSITION, NULL);
|
|
|
|
transition->property = property;
|
|
transition->start = _gtk_css_value_ref (start);
|
|
transition->ease = _gtk_css_value_ref (ease);
|
|
transition->start_time = start_time_us;
|
|
transition->end_time = end_time_us;
|
|
|
|
return GTK_STYLE_ANIMATION (transition);
|
|
}
|
|
|
|
guint
|
|
_gtk_css_transition_get_property (GtkCssTransition *transition)
|
|
{
|
|
g_return_val_if_fail (GTK_IS_CSS_TRANSITION (transition), 0);
|
|
|
|
return transition->property;
|
|
}
|