forked from AuroraMiddleware/gtk
animation: Add CSS transition object
This is an implementation of GtkStyleAnimation for CSS transitions. Again, this doesn't do anything but store the data needed to do the transition.
This commit is contained in:
Benjamin Otte
parent
7b7027c971
commit
9c57b96f56
@ -456,6 +456,7 @@ gtk_private_h_sources = \
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gtkcssstringvalueprivate.h \
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gtkcssstylefuncsprivate.h \
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gtkcssstylepropertyprivate.h \
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gtkcsstransitionprivate.h \
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gtkcsstypedvalueprivate.h \
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gtkcssvalueprivate.h \
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gtkcustompaperunixdialog.h \
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@ -672,6 +673,7 @@ gtk_base_c_sources = \
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gtkcssstylefuncs.c \
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gtkcssstyleproperty.c \
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gtkcssstylepropertyimpl.c \
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gtkcsstransition.c \
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gtkcsstypedvalue.c \
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gtkcssvalue.c \
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gtkcsstypes.c \
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131
gtk/gtkcsstransition.c
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131
gtk/gtkcsstransition.c
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@ -0,0 +1,131 @@
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/*
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* Copyright © 2012 Red Hat Inc.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library. If not, see <http://www.gnu.org/licenses/>.
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*
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* Authors: Benjamin Otte <otte@gnome.org>
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*/
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#include "config.h"
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#include "gtkcsstransitionprivate.h"
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#include "gtkcsseasevalueprivate.h"
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G_DEFINE_TYPE (GtkCssTransition, _gtk_css_transition, GTK_TYPE_STYLE_ANIMATION)
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static GtkBitmask *
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gtk_css_transition_set_values (GtkStyleAnimation *animation,
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GtkBitmask *changed,
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gint64 for_time_us,
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GtkCssComputedValues *values)
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{
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GtkCssTransition *transition = GTK_CSS_TRANSITION (animation);
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GtkCssValue *value;
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double progress;
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if (transition->start_time >= for_time_us)
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value = _gtk_css_value_ref (transition->start);
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else if (transition->end_time <= for_time_us)
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value = _gtk_css_value_ref (transition->end);
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else
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{
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progress = (double) (for_time_us - transition->start_time) / (transition->end_time - transition->start_time);
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progress = _gtk_css_ease_value_transform (transition->ease, progress);
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value = _gtk_css_value_transition (transition->start,
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transition->end,
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progress);
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if (value == NULL)
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value = _gtk_css_value_ref (transition->end);
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}
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_gtk_css_computed_values_set_value (values, transition->property, value, NULL);
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_gtk_css_value_unref (value);
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return _gtk_bitmask_set (changed, transition->property, TRUE);
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}
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static gboolean
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gtk_css_transition_is_finished (GtkStyleAnimation *animation,
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gint64 at_time_us)
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{
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GtkCssTransition *transition = GTK_CSS_TRANSITION (animation);
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return at_time_us >= transition->end_time;
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}
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static void
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gtk_css_transition_finalize (GObject *object)
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{
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GtkCssTransition *transition = GTK_CSS_TRANSITION (object);
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_gtk_css_value_unref (transition->start);
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_gtk_css_value_unref (transition->end);
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_gtk_css_value_unref (transition->ease);
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G_OBJECT_CLASS (_gtk_css_transition_parent_class)->finalize (object);
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}
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static void
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_gtk_css_transition_class_init (GtkCssTransitionClass *klass)
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{
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GObjectClass *object_class = G_OBJECT_CLASS (klass);
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GtkStyleAnimationClass *animation_class = GTK_STYLE_ANIMATION_CLASS (klass);
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object_class->finalize = gtk_css_transition_finalize;
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animation_class->set_values = gtk_css_transition_set_values;
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animation_class->is_finished = gtk_css_transition_is_finished;
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}
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static void
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_gtk_css_transition_init (GtkCssTransition *transition)
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{
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}
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GtkStyleAnimation *
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_gtk_css_transition_new (guint property,
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GtkCssValue *start,
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GtkCssValue *end,
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GtkCssValue *ease,
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gint64 start_time_us,
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gint64 end_time_us)
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{
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GtkCssTransition *transition;
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g_return_val_if_fail (start != NULL, NULL);
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g_return_val_if_fail (end != NULL, NULL);
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g_return_val_if_fail (ease != NULL, NULL);
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g_return_val_if_fail (start_time_us <= end_time_us, NULL);
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transition = g_object_new (GTK_TYPE_CSS_TRANSITION, NULL);
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transition->property = property;
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transition->start = _gtk_css_value_ref (start);
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transition->end = _gtk_css_value_ref (end);
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transition->ease = _gtk_css_value_ref (ease);
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transition->start_time = start_time_us;
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transition->end_time = end_time_us;
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return GTK_STYLE_ANIMATION (transition);
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}
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guint
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_gtk_css_transition_get_property (GtkCssTransition *transition)
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{
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g_return_val_if_fail (GTK_IS_CSS_TRANSITION (transition), 0);
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return transition->property;
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}
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67
gtk/gtkcsstransitionprivate.h
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67
gtk/gtkcsstransitionprivate.h
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@ -0,0 +1,67 @@
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/*
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* Copyright © 2012 Red Hat Inc.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library. If not, see <http://www.gnu.org/licenses/>.
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*
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* Authors: Benjamin Otte <otte@gnome.org>
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*/
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#ifndef __GTK_CSS_TRANSITION_PRIVATE_H__
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#define __GTK_CSS_TRANSITION_PRIVATE_H__
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#include "gtkstyleanimationprivate.h"
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G_BEGIN_DECLS
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#define GTK_TYPE_CSS_TRANSITION (_gtk_css_transition_get_type ())
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#define GTK_CSS_TRANSITION(obj) (G_TYPE_CHECK_INSTANCE_CAST (obj, GTK_TYPE_CSS_TRANSITION, GtkCssTransition))
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#define GTK_CSS_TRANSITION_CLASS(cls) (G_TYPE_CHECK_CLASS_CAST (cls, GTK_TYPE_CSS_TRANSITION, GtkCssTransitionClass))
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#define GTK_IS_CSS_TRANSITION(obj) (G_TYPE_CHECK_INSTANCE_TYPE (obj, GTK_TYPE_CSS_TRANSITION))
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#define GTK_IS_CSS_TRANSITION_CLASS(obj) (G_TYPE_CHECK_CLASS_TYPE (obj, GTK_TYPE_CSS_TRANSITION))
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#define GTK_CSS_TRANSITION_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GTK_TYPE_CSS_TRANSITION, GtkCssTransitionClass))
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typedef struct _GtkCssTransition GtkCssTransition;
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typedef struct _GtkCssTransitionClass GtkCssTransitionClass;
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struct _GtkCssTransition
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{
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GtkStyleAnimation parent;
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guint property;
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GtkCssValue *start;
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GtkCssValue *end;
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GtkCssValue *ease;
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gint64 start_time;
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gint64 end_time;
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};
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struct _GtkCssTransitionClass
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{
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GtkStyleAnimationClass parent_class;
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};
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GType _gtk_css_transition_get_type (void) G_GNUC_CONST;
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GtkStyleAnimation * _gtk_css_transition_new (guint property,
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GtkCssValue *start,
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GtkCssValue *end,
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GtkCssValue *ease,
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gint64 start_time_us,
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gint64 end_time_us);
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guint _gtk_css_transition_get_property (GtkCssTransition *transition);
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G_END_DECLS
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#endif /* __GTK_CSS_TRANSITION_PRIVATE_H__ */
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