/*
* 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 "gtkcssanimatedstyleprivate.h"
#include "gtkcssanimationprivate.h"
#include "gtkcssarrayvalueprivate.h"
#include "gtkcssenumvalueprivate.h"
#include "gtkcssinheritvalueprivate.h"
#include "gtkcssinitialvalueprivate.h"
#include "gtkcssnumbervalueprivate.h"
#include "gtkcsssectionprivate.h"
#include "gtkcssshorthandpropertyprivate.h"
#include "gtkcssstaticstyleprivate.h"
#include "gtkcssstringvalueprivate.h"
#include "gtkcssstylepropertyprivate.h"
#include "gtkcsstransitionprivate.h"
#include "gtkprivate.h"
#include "gtkstyleanimationprivate.h"
#include "gtkstylepropertyprivate.h"
#include "gtkstyleproviderprivate.h"
G_DEFINE_TYPE (GtkCssAnimatedStyle, gtk_css_animated_style, GTK_TYPE_CSS_STYLE)
static GtkCssValue *
gtk_css_animated_style_get_value (GtkCssStyle *style,
guint id)
{
GtkCssAnimatedStyle *animated = GTK_CSS_ANIMATED_STYLE (style);
if (animated->animated_values &&
id < animated->animated_values->len &&
g_ptr_array_index (animated->animated_values, id))
return g_ptr_array_index (animated->animated_values, id);
return gtk_css_animated_style_get_intrinsic_value (animated, id);
}
static GtkCssSection *
gtk_css_animated_style_get_section (GtkCssStyle *style,
guint id)
{
GtkCssAnimatedStyle *animated = GTK_CSS_ANIMATED_STYLE (style);
return gtk_css_style_get_section (animated->style, id);
}
static gboolean
gtk_css_animated_style_is_static (GtkCssStyle *style)
{
GtkCssAnimatedStyle *animated = GTK_CSS_ANIMATED_STYLE (style);
GSList *list;
for (list = animated->animations; list; list = list->next)
{
if (!_gtk_style_animation_is_static (list->data))
return FALSE;
}
return TRUE;
}
static void
gtk_css_animated_style_dispose (GObject *object)
{
GtkCssAnimatedStyle *style = GTK_CSS_ANIMATED_STYLE (object);
if (style->animated_values)
{
g_ptr_array_unref (style->animated_values);
style->animated_values = NULL;
}
g_slist_free_full (style->animations, g_object_unref);
style->animations = NULL;
G_OBJECT_CLASS (gtk_css_animated_style_parent_class)->dispose (object);
}
static void
gtk_css_animated_style_finalize (GObject *object)
{
GtkCssAnimatedStyle *style = GTK_CSS_ANIMATED_STYLE (object);
g_object_unref (style->style);
G_OBJECT_CLASS (gtk_css_animated_style_parent_class)->finalize (object);
}
static void
gtk_css_animated_style_class_init (GtkCssAnimatedStyleClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
GtkCssStyleClass *style_class = GTK_CSS_STYLE_CLASS (klass);
object_class->dispose = gtk_css_animated_style_dispose;
object_class->finalize = gtk_css_animated_style_finalize;
style_class->get_value = gtk_css_animated_style_get_value;
style_class->get_section = gtk_css_animated_style_get_section;
style_class->is_static = gtk_css_animated_style_is_static;
}
static void
gtk_css_animated_style_init (GtkCssAnimatedStyle *style)
{
}
void
gtk_css_animated_style_set_animated_value (GtkCssAnimatedStyle *style,
guint id,
GtkCssValue *value)
{
gtk_internal_return_if_fail (GTK_IS_CSS_ANIMATED_STYLE (style));
gtk_internal_return_if_fail (value != NULL);
if (style->animated_values == NULL)
style->animated_values = g_ptr_array_new_with_free_func ((GDestroyNotify)_gtk_css_value_unref);
if (id >= style->animated_values->len)
g_ptr_array_set_size (style->animated_values, id + 1);
if (g_ptr_array_index (style->animated_values, id))
_gtk_css_value_unref (g_ptr_array_index (style->animated_values, id));
g_ptr_array_index (style->animated_values, id) = _gtk_css_value_ref (value);
}
GtkCssValue *
gtk_css_animated_style_get_intrinsic_value (GtkCssAnimatedStyle *style,
guint id)
{
gtk_internal_return_val_if_fail (GTK_IS_CSS_ANIMATED_STYLE (style), NULL);
return gtk_css_style_get_value (style->style, id);
}
/* TRANSITIONS */
typedef struct _TransitionInfo TransitionInfo;
struct _TransitionInfo {
guint index; /* index into value arrays */
gboolean pending; /* TRUE if we still need to handle it */
};
static void
transition_info_add (TransitionInfo infos[GTK_CSS_PROPERTY_N_PROPERTIES],
GtkStyleProperty *property,
guint index)
{
if (property == NULL)
{
guint i;
for (i = 0; i < _gtk_css_style_property_get_n_properties (); i++)
{
GtkCssStyleProperty *prop = _gtk_css_style_property_lookup_by_id (i);
transition_info_add (infos, GTK_STYLE_PROPERTY (prop), index);
}
}
else if (GTK_IS_CSS_SHORTHAND_PROPERTY (property))
{
GtkCssShorthandProperty *shorthand = GTK_CSS_SHORTHAND_PROPERTY (property);
guint i;
for (i = 0; i < _gtk_css_shorthand_property_get_n_subproperties (shorthand); i++)
{
GtkCssStyleProperty *prop = _gtk_css_shorthand_property_get_subproperty (shorthand, i);
transition_info_add (infos, GTK_STYLE_PROPERTY (prop), index);
}
}
else if (GTK_IS_CSS_STYLE_PROPERTY (property))
{
guint id;
if (!_gtk_css_style_property_is_animated (GTK_CSS_STYLE_PROPERTY (property)))
return;
id = _gtk_css_style_property_get_id (GTK_CSS_STYLE_PROPERTY (property));
g_assert (id < GTK_CSS_PROPERTY_N_PROPERTIES);
infos[id].index = index;
infos[id].pending = TRUE;
}
else
{
g_assert_not_reached ();
}
}
static void
transition_infos_set (TransitionInfo infos[GTK_CSS_PROPERTY_N_PROPERTIES],
GtkCssValue *transitions)
{
guint i;
for (i = 0; i < _gtk_css_array_value_get_n_values (transitions); i++)
{
GtkStyleProperty *property;
GtkCssValue *prop_value;
prop_value = _gtk_css_array_value_get_nth (transitions, i);
if (g_ascii_strcasecmp (_gtk_css_ident_value_get (prop_value), "all") == 0)
property = NULL;
else
{
property = _gtk_style_property_lookup (_gtk_css_ident_value_get (prop_value));
if (property == NULL)
continue;
}
transition_info_add (infos, property, i);
}
}
static GtkStyleAnimation *
gtk_css_animated_style_find_transition (GtkCssAnimatedStyle *style,
guint property_id)
{
GSList *list;
for (list = style->animations; list; list = list->next)
{
if (!GTK_IS_CSS_TRANSITION (list->data))
continue;
if (_gtk_css_transition_get_property (list->data) == property_id)
return list->data;
}
return NULL;
}
static GSList *
gtk_css_animated_style_create_css_transitions (GSList *animations,
GtkCssStyle *base_style,
gint64 timestamp,
GtkCssStyle *source)
{
TransitionInfo transitions[GTK_CSS_PROPERTY_N_PROPERTIES] = { { 0, } };
GtkCssValue *durations, *delays, *timing_functions;
guint i;
transition_infos_set (transitions, gtk_css_style_get_value (base_style, GTK_CSS_PROPERTY_TRANSITION_PROPERTY));
durations = gtk_css_style_get_value (base_style, GTK_CSS_PROPERTY_TRANSITION_DURATION);
delays = gtk_css_style_get_value (base_style, GTK_CSS_PROPERTY_TRANSITION_DELAY);
timing_functions = gtk_css_style_get_value (base_style, GTK_CSS_PROPERTY_TRANSITION_TIMING_FUNCTION);
for (i = 0; i < GTK_CSS_PROPERTY_N_PROPERTIES; i++)
{
GtkStyleAnimation *animation;
GtkCssValue *start, *end;
double duration, delay;
if (!transitions[i].pending)
continue;
duration = _gtk_css_number_value_get (_gtk_css_array_value_get_nth (durations, transitions[i].index), 100);
delay = _gtk_css_number_value_get (_gtk_css_array_value_get_nth (delays, transitions[i].index), 100);
if (duration + delay == 0.0)
continue;
if (GTK_IS_CSS_ANIMATED_STYLE (source))
{
start = gtk_css_animated_style_get_intrinsic_value (GTK_CSS_ANIMATED_STYLE (source), i);
end = gtk_css_style_get_value (base_style, i);
if (_gtk_css_value_equal (start, end))
{
animation = gtk_css_animated_style_find_transition (GTK_CSS_ANIMATED_STYLE (source), i);
if (animation)
{
animation = _gtk_style_animation_advance (animation, timestamp);
animations = g_slist_prepend (animations, animation);
}
continue;
}
}
if (_gtk_css_value_equal (gtk_css_style_get_value (source, i),
gtk_css_style_get_value (base_style, i)))
continue;
animation = _gtk_css_transition_new (i,
gtk_css_style_get_value (source, i),
_gtk_css_array_value_get_nth (timing_functions, i),
timestamp,
duration * G_USEC_PER_SEC,
delay * G_USEC_PER_SEC);
animations = g_slist_prepend (animations, animation);
}
return animations;
}
static GtkStyleAnimation *
gtk_css_animated_style_find_animation (GSList *animations,
const char *name)
{
GSList *list;
for (list = animations; list; list = list->next)
{
if (!GTK_IS_CSS_ANIMATION (list->data))
continue;
if (g_str_equal (_gtk_css_animation_get_name (list->data), name))
return list->data;
}
return NULL;
}
static GSList *
gtk_css_animated_style_create_css_animations (GSList *animations,
GtkCssStyle *base_style,
GtkCssStyle *parent_style,
gint64 timestamp,
GtkStyleProviderPrivate *provider,
GtkCssStyle *source)
{
GtkCssValue *durations, *delays, *timing_functions, *animation_names;
GtkCssValue *iteration_counts, *directions, *play_states, *fill_modes;
guint i;
animation_names = gtk_css_style_get_value (base_style, GTK_CSS_PROPERTY_ANIMATION_NAME);
durations = gtk_css_style_get_value (base_style, GTK_CSS_PROPERTY_ANIMATION_DURATION);
delays = gtk_css_style_get_value (base_style, GTK_CSS_PROPERTY_ANIMATION_DELAY);
timing_functions = gtk_css_style_get_value (base_style, GTK_CSS_PROPERTY_ANIMATION_TIMING_FUNCTION);
iteration_counts = gtk_css_style_get_value (base_style, GTK_CSS_PROPERTY_ANIMATION_ITERATION_COUNT);
directions = gtk_css_style_get_value (base_style, GTK_CSS_PROPERTY_ANIMATION_DIRECTION);
play_states = gtk_css_style_get_value (base_style, GTK_CSS_PROPERTY_ANIMATION_PLAY_STATE);
fill_modes = gtk_css_style_get_value (base_style, GTK_CSS_PROPERTY_ANIMATION_FILL_MODE);
for (i = 0; i < _gtk_css_array_value_get_n_values (animation_names); i++)
{
GtkStyleAnimation *animation;
GtkCssKeyframes *keyframes;
const char *name;
name = _gtk_css_ident_value_get (_gtk_css_array_value_get_nth (animation_names, i));
if (g_ascii_strcasecmp (name, "none") == 0)
continue;
animation = gtk_css_animated_style_find_animation (animations, name);
if (animation)
continue;
if (GTK_IS_CSS_ANIMATED_STYLE (source))
animation = gtk_css_animated_style_find_animation (GTK_CSS_ANIMATED_STYLE (source)->animations, name);
if (animation)
{
animation = _gtk_css_animation_advance_with_play_state (GTK_CSS_ANIMATION (animation),
timestamp,
_gtk_css_play_state_value_get (_gtk_css_array_value_get_nth (play_states, i)));
}
else
{
keyframes = _gtk_style_provider_private_get_keyframes (provider, name);
if (keyframes == NULL)
continue;
keyframes = _gtk_css_keyframes_compute (keyframes, provider, base_style, parent_style);
animation = _gtk_css_animation_new (name,
keyframes,
timestamp,
_gtk_css_number_value_get (_gtk_css_array_value_get_nth (delays, i), 100) * G_USEC_PER_SEC,
_gtk_css_number_value_get (_gtk_css_array_value_get_nth (durations, i), 100) * G_USEC_PER_SEC,
_gtk_css_array_value_get_nth (timing_functions, i),
_gtk_css_direction_value_get (_gtk_css_array_value_get_nth (directions, i)),
_gtk_css_play_state_value_get (_gtk_css_array_value_get_nth (play_states, i)),
_gtk_css_fill_mode_value_get (_gtk_css_array_value_get_nth (fill_modes, i)),
_gtk_css_number_value_get (_gtk_css_array_value_get_nth (iteration_counts, i), 100));
_gtk_css_keyframes_unref (keyframes);
}
animations = g_slist_prepend (animations, animation);
}
return animations;
}
/* PUBLIC API */
static void
gtk_css_animated_style_apply_animations (GtkCssAnimatedStyle *style)
{
GSList *l;
for (l = style->animations; l; l = l->next)
{
GtkStyleAnimation *animation = l->data;
_gtk_style_animation_apply_values (animation,
GTK_CSS_ANIMATED_STYLE (style));
}
}
GtkCssStyle *
gtk_css_animated_style_new (GtkCssStyle *base_style,
GtkCssStyle *parent_style,
gint64 timestamp,
GtkStyleProviderPrivate *provider,
GtkCssStyle *previous_style)
{
GtkCssAnimatedStyle *result;
GSList *animations;
gtk_internal_return_val_if_fail (GTK_IS_CSS_STYLE (base_style), NULL);
gtk_internal_return_val_if_fail (parent_style == NULL || GTK_IS_CSS_STYLE (parent_style), NULL);
gtk_internal_return_val_if_fail (GTK_IS_STYLE_PROVIDER (provider), NULL);
gtk_internal_return_val_if_fail (previous_style == NULL || GTK_IS_CSS_STYLE (previous_style), NULL);
if (timestamp == 0)
return g_object_ref (base_style);
animations = NULL;
if (previous_style != NULL)
animations = gtk_css_animated_style_create_css_transitions (animations, base_style, timestamp, previous_style);
animations = gtk_css_animated_style_create_css_animations (animations, base_style, parent_style, timestamp, provider, previous_style);
if (animations == NULL)
return g_object_ref (base_style);
result = g_object_new (GTK_TYPE_CSS_ANIMATED_STYLE, NULL);
result->style = g_object_ref (base_style);
result->current_time = timestamp;
result->animations = animations;
gtk_css_animated_style_apply_animations (result);
return GTK_CSS_STYLE (result);
}
GtkCssStyle *
gtk_css_animated_style_new_advance (GtkCssAnimatedStyle *source,
GtkCssStyle *base,
gint64 timestamp)
{
GtkCssAnimatedStyle *result;
GSList *l, *animations;
gtk_internal_return_val_if_fail (GTK_IS_CSS_ANIMATED_STYLE (source), NULL);
gtk_internal_return_val_if_fail (GTK_IS_CSS_STYLE (base), NULL);
if (timestamp == 0 || timestamp == source->current_time)
return g_object_ref (source->style);
gtk_internal_return_val_if_fail (timestamp > source->current_time, NULL);
animations = NULL;
for (l = source->animations; l; l = l->next)
{
GtkStyleAnimation *animation = l->data;
if (_gtk_style_animation_is_finished (animation))
continue;
animation = _gtk_style_animation_advance (animation, timestamp);
animations = g_slist_prepend (animations, animation);
}
animations = g_slist_reverse (animations);
if (animations == NULL)
return g_object_ref (source->style);
result = g_object_new (GTK_TYPE_CSS_ANIMATED_STYLE, NULL);
result->style = g_object_ref (base);
result->current_time = timestamp;
result->animations = animations;
gtk_css_animated_style_apply_animations (result);
return GTK_CSS_STYLE (result);
}