a970ba5ef6
Because of our port of css animation and css transition to progress tracker, we should not think of animated styles as immutable objects that can map any timestamp to css values. Rather, timestamps can correspond to different values depending on the value of GTK_SLOWDOWN over the course of the animation. To keep animated styles and style animations totally immutable, we will not share styleanimations between animatedstyles, and make a new copy of a styleanimation for each timestamp.
500 lines
17 KiB
C
500 lines
17 KiB
C
/*
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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 "gtkcssanimatedstyleprivate.h"
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#include "gtkcssanimationprivate.h"
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#include "gtkcssarrayvalueprivate.h"
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#include "gtkcssenumvalueprivate.h"
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#include "gtkcssinheritvalueprivate.h"
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#include "gtkcssinitialvalueprivate.h"
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#include "gtkcssnumbervalueprivate.h"
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#include "gtkcsssectionprivate.h"
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#include "gtkcssshorthandpropertyprivate.h"
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#include "gtkcssstaticstyleprivate.h"
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#include "gtkcssstringvalueprivate.h"
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#include "gtkcssstylepropertyprivate.h"
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#include "gtkcsstransitionprivate.h"
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#include "gtkprivate.h"
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#include "gtkstyleanimationprivate.h"
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#include "gtkstylepropertyprivate.h"
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#include "gtkstyleproviderprivate.h"
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G_DEFINE_TYPE (GtkCssAnimatedStyle, gtk_css_animated_style, GTK_TYPE_CSS_STYLE)
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static GtkCssValue *
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gtk_css_animated_style_get_value (GtkCssStyle *style,
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guint id)
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{
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GtkCssAnimatedStyle *animated = GTK_CSS_ANIMATED_STYLE (style);
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if (animated->animated_values &&
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id < animated->animated_values->len &&
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g_ptr_array_index (animated->animated_values, id))
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return g_ptr_array_index (animated->animated_values, id);
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return gtk_css_animated_style_get_intrinsic_value (animated, id);
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}
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static GtkCssSection *
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gtk_css_animated_style_get_section (GtkCssStyle *style,
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guint id)
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{
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GtkCssAnimatedStyle *animated = GTK_CSS_ANIMATED_STYLE (style);
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return gtk_css_style_get_section (animated->style, id);
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}
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static gboolean
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gtk_css_animated_style_is_static (GtkCssStyle *style)
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{
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GtkCssAnimatedStyle *animated = GTK_CSS_ANIMATED_STYLE (style);
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GSList *list;
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for (list = animated->animations; list; list = list->next)
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{
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if (!_gtk_style_animation_is_static (list->data))
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return FALSE;
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}
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return TRUE;
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}
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static void
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gtk_css_animated_style_dispose (GObject *object)
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{
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GtkCssAnimatedStyle *style = GTK_CSS_ANIMATED_STYLE (object);
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if (style->animated_values)
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{
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g_ptr_array_unref (style->animated_values);
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style->animated_values = NULL;
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}
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g_slist_free_full (style->animations, g_object_unref);
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style->animations = NULL;
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G_OBJECT_CLASS (gtk_css_animated_style_parent_class)->dispose (object);
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}
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static void
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gtk_css_animated_style_finalize (GObject *object)
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{
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GtkCssAnimatedStyle *style = GTK_CSS_ANIMATED_STYLE (object);
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g_object_unref (style->style);
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G_OBJECT_CLASS (gtk_css_animated_style_parent_class)->finalize (object);
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}
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static void
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gtk_css_animated_style_class_init (GtkCssAnimatedStyleClass *klass)
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{
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GObjectClass *object_class = G_OBJECT_CLASS (klass);
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GtkCssStyleClass *style_class = GTK_CSS_STYLE_CLASS (klass);
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object_class->dispose = gtk_css_animated_style_dispose;
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object_class->finalize = gtk_css_animated_style_finalize;
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style_class->get_value = gtk_css_animated_style_get_value;
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style_class->get_section = gtk_css_animated_style_get_section;
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style_class->is_static = gtk_css_animated_style_is_static;
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}
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static void
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gtk_css_animated_style_init (GtkCssAnimatedStyle *style)
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{
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}
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void
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gtk_css_animated_style_set_animated_value (GtkCssAnimatedStyle *style,
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guint id,
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GtkCssValue *value)
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{
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gtk_internal_return_if_fail (GTK_IS_CSS_ANIMATED_STYLE (style));
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gtk_internal_return_if_fail (value != NULL);
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if (style->animated_values == NULL)
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style->animated_values = g_ptr_array_new_with_free_func ((GDestroyNotify)_gtk_css_value_unref);
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if (id >= style->animated_values->len)
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g_ptr_array_set_size (style->animated_values, id + 1);
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if (g_ptr_array_index (style->animated_values, id))
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_gtk_css_value_unref (g_ptr_array_index (style->animated_values, id));
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g_ptr_array_index (style->animated_values, id) = _gtk_css_value_ref (value);
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}
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GtkCssValue *
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gtk_css_animated_style_get_intrinsic_value (GtkCssAnimatedStyle *style,
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guint id)
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{
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gtk_internal_return_val_if_fail (GTK_IS_CSS_ANIMATED_STYLE (style), NULL);
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return gtk_css_style_get_value (style->style, id);
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}
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/* TRANSITIONS */
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typedef struct _TransitionInfo TransitionInfo;
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struct _TransitionInfo {
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guint index; /* index into value arrays */
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gboolean pending; /* TRUE if we still need to handle it */
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};
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static void
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transition_info_add (TransitionInfo infos[GTK_CSS_PROPERTY_N_PROPERTIES],
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GtkStyleProperty *property,
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guint index)
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{
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if (property == NULL)
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{
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guint i;
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for (i = 0; i < _gtk_css_style_property_get_n_properties (); i++)
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{
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GtkCssStyleProperty *prop = _gtk_css_style_property_lookup_by_id (i);
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transition_info_add (infos, GTK_STYLE_PROPERTY (prop), index);
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}
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}
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else if (GTK_IS_CSS_SHORTHAND_PROPERTY (property))
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{
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GtkCssShorthandProperty *shorthand = GTK_CSS_SHORTHAND_PROPERTY (property);
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guint i;
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for (i = 0; i < _gtk_css_shorthand_property_get_n_subproperties (shorthand); i++)
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{
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GtkCssStyleProperty *prop = _gtk_css_shorthand_property_get_subproperty (shorthand, i);
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transition_info_add (infos, GTK_STYLE_PROPERTY (prop), index);
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}
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}
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else if (GTK_IS_CSS_STYLE_PROPERTY (property))
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{
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guint id;
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if (!_gtk_css_style_property_is_animated (GTK_CSS_STYLE_PROPERTY (property)))
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return;
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id = _gtk_css_style_property_get_id (GTK_CSS_STYLE_PROPERTY (property));
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g_assert (id < GTK_CSS_PROPERTY_N_PROPERTIES);
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infos[id].index = index;
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infos[id].pending = TRUE;
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}
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else
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{
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g_assert_not_reached ();
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}
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}
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static void
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transition_infos_set (TransitionInfo infos[GTK_CSS_PROPERTY_N_PROPERTIES],
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GtkCssValue *transitions)
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{
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guint i;
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for (i = 0; i < _gtk_css_array_value_get_n_values (transitions); i++)
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{
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GtkStyleProperty *property;
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GtkCssValue *prop_value;
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prop_value = _gtk_css_array_value_get_nth (transitions, i);
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if (g_ascii_strcasecmp (_gtk_css_ident_value_get (prop_value), "all") == 0)
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property = NULL;
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else
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{
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property = _gtk_style_property_lookup (_gtk_css_ident_value_get (prop_value));
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if (property == NULL)
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continue;
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}
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transition_info_add (infos, property, i);
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}
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}
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static GtkStyleAnimation *
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gtk_css_animated_style_find_transition (GtkCssAnimatedStyle *style,
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guint property_id)
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{
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GSList *list;
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for (list = style->animations; list; list = list->next)
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{
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if (!GTK_IS_CSS_TRANSITION (list->data))
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continue;
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if (_gtk_css_transition_get_property (list->data) == property_id)
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return list->data;
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}
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return NULL;
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}
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static GSList *
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gtk_css_animated_style_create_css_transitions (GSList *animations,
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GtkCssStyle *base_style,
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gint64 timestamp,
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GtkCssStyle *source)
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{
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TransitionInfo transitions[GTK_CSS_PROPERTY_N_PROPERTIES] = { { 0, } };
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GtkCssValue *durations, *delays, *timing_functions;
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guint i;
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transition_infos_set (transitions, gtk_css_style_get_value (base_style, GTK_CSS_PROPERTY_TRANSITION_PROPERTY));
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durations = gtk_css_style_get_value (base_style, GTK_CSS_PROPERTY_TRANSITION_DURATION);
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delays = gtk_css_style_get_value (base_style, GTK_CSS_PROPERTY_TRANSITION_DELAY);
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timing_functions = gtk_css_style_get_value (base_style, GTK_CSS_PROPERTY_TRANSITION_TIMING_FUNCTION);
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for (i = 0; i < GTK_CSS_PROPERTY_N_PROPERTIES; i++)
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{
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GtkStyleAnimation *animation;
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GtkCssValue *start, *end;
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double duration, delay;
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if (!transitions[i].pending)
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continue;
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duration = _gtk_css_number_value_get (_gtk_css_array_value_get_nth (durations, transitions[i].index), 100);
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delay = _gtk_css_number_value_get (_gtk_css_array_value_get_nth (delays, transitions[i].index), 100);
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if (duration + delay == 0.0)
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continue;
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if (GTK_IS_CSS_ANIMATED_STYLE (source))
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{
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start = gtk_css_animated_style_get_intrinsic_value (GTK_CSS_ANIMATED_STYLE (source), i);
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end = gtk_css_style_get_value (base_style, i);
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if (_gtk_css_value_equal (start, end))
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{
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animation = gtk_css_animated_style_find_transition (GTK_CSS_ANIMATED_STYLE (source), i);
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if (animation)
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{
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animation = _gtk_style_animation_advance (animation, timestamp);
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animations = g_slist_prepend (animations, animation);
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}
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continue;
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}
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}
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if (_gtk_css_value_equal (gtk_css_style_get_value (source, i),
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gtk_css_style_get_value (base_style, i)))
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continue;
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animation = _gtk_css_transition_new (i,
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gtk_css_style_get_value (source, i),
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_gtk_css_array_value_get_nth (timing_functions, i),
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timestamp,
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duration * G_USEC_PER_SEC,
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delay * G_USEC_PER_SEC);
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animations = g_slist_prepend (animations, animation);
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}
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return animations;
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}
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static GtkStyleAnimation *
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gtk_css_animated_style_find_animation (GSList *animations,
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const char *name)
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{
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GSList *list;
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for (list = animations; list; list = list->next)
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{
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if (!GTK_IS_CSS_ANIMATION (list->data))
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continue;
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if (g_str_equal (_gtk_css_animation_get_name (list->data), name))
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return list->data;
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}
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return NULL;
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}
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static GSList *
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gtk_css_animated_style_create_css_animations (GSList *animations,
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GtkCssStyle *base_style,
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GtkCssStyle *parent_style,
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gint64 timestamp,
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GtkStyleProviderPrivate *provider,
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GtkCssStyle *source)
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{
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GtkCssValue *durations, *delays, *timing_functions, *animation_names;
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GtkCssValue *iteration_counts, *directions, *play_states, *fill_modes;
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guint i;
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animation_names = gtk_css_style_get_value (base_style, GTK_CSS_PROPERTY_ANIMATION_NAME);
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durations = gtk_css_style_get_value (base_style, GTK_CSS_PROPERTY_ANIMATION_DURATION);
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delays = gtk_css_style_get_value (base_style, GTK_CSS_PROPERTY_ANIMATION_DELAY);
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timing_functions = gtk_css_style_get_value (base_style, GTK_CSS_PROPERTY_ANIMATION_TIMING_FUNCTION);
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iteration_counts = gtk_css_style_get_value (base_style, GTK_CSS_PROPERTY_ANIMATION_ITERATION_COUNT);
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directions = gtk_css_style_get_value (base_style, GTK_CSS_PROPERTY_ANIMATION_DIRECTION);
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play_states = gtk_css_style_get_value (base_style, GTK_CSS_PROPERTY_ANIMATION_PLAY_STATE);
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fill_modes = gtk_css_style_get_value (base_style, GTK_CSS_PROPERTY_ANIMATION_FILL_MODE);
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for (i = 0; i < _gtk_css_array_value_get_n_values (animation_names); i++)
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{
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GtkStyleAnimation *animation;
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GtkCssKeyframes *keyframes;
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const char *name;
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name = _gtk_css_ident_value_get (_gtk_css_array_value_get_nth (animation_names, i));
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if (g_ascii_strcasecmp (name, "none") == 0)
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continue;
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animation = gtk_css_animated_style_find_animation (animations, name);
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if (animation)
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continue;
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if (GTK_IS_CSS_ANIMATED_STYLE (source))
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animation = gtk_css_animated_style_find_animation (GTK_CSS_ANIMATED_STYLE (source)->animations, name);
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if (animation)
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{
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animation = _gtk_css_animation_advance_with_play_state (GTK_CSS_ANIMATION (animation),
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timestamp,
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_gtk_css_play_state_value_get (_gtk_css_array_value_get_nth (play_states, i)));
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}
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else
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{
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keyframes = _gtk_style_provider_private_get_keyframes (provider, name);
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if (keyframes == NULL)
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continue;
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keyframes = _gtk_css_keyframes_compute (keyframes, provider, base_style, parent_style);
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animation = _gtk_css_animation_new (name,
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keyframes,
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timestamp,
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_gtk_css_number_value_get (_gtk_css_array_value_get_nth (delays, i), 100) * G_USEC_PER_SEC,
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_gtk_css_number_value_get (_gtk_css_array_value_get_nth (durations, i), 100) * G_USEC_PER_SEC,
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_gtk_css_array_value_get_nth (timing_functions, i),
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_gtk_css_direction_value_get (_gtk_css_array_value_get_nth (directions, i)),
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_gtk_css_play_state_value_get (_gtk_css_array_value_get_nth (play_states, i)),
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_gtk_css_fill_mode_value_get (_gtk_css_array_value_get_nth (fill_modes, i)),
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_gtk_css_number_value_get (_gtk_css_array_value_get_nth (iteration_counts, i), 100));
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_gtk_css_keyframes_unref (keyframes);
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}
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animations = g_slist_prepend (animations, animation);
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}
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return animations;
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}
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/* PUBLIC API */
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static void
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gtk_css_animated_style_apply_animations (GtkCssAnimatedStyle *style)
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{
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GSList *l;
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for (l = style->animations; l; l = l->next)
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{
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GtkStyleAnimation *animation = l->data;
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_gtk_style_animation_apply_values (animation,
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GTK_CSS_ANIMATED_STYLE (style));
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}
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}
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GtkCssStyle *
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gtk_css_animated_style_new (GtkCssStyle *base_style,
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GtkCssStyle *parent_style,
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gint64 timestamp,
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GtkStyleProviderPrivate *provider,
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GtkCssStyle *previous_style)
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{
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GtkCssAnimatedStyle *result;
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GSList *animations;
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gtk_internal_return_val_if_fail (GTK_IS_CSS_STYLE (base_style), NULL);
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gtk_internal_return_val_if_fail (parent_style == NULL || GTK_IS_CSS_STYLE (parent_style), NULL);
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gtk_internal_return_val_if_fail (GTK_IS_STYLE_PROVIDER (provider), NULL);
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gtk_internal_return_val_if_fail (previous_style == NULL || GTK_IS_CSS_STYLE (previous_style), NULL);
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if (timestamp == 0)
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return g_object_ref (base_style);
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animations = NULL;
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if (previous_style != NULL)
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animations = gtk_css_animated_style_create_css_transitions (animations, base_style, timestamp, previous_style);
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animations = gtk_css_animated_style_create_css_animations (animations, base_style, parent_style, timestamp, provider, previous_style);
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if (animations == NULL)
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return g_object_ref (base_style);
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result = g_object_new (GTK_TYPE_CSS_ANIMATED_STYLE, NULL);
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result->style = g_object_ref (base_style);
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result->current_time = timestamp;
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result->animations = animations;
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gtk_css_animated_style_apply_animations (result);
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return GTK_CSS_STYLE (result);
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}
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GtkCssStyle *
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gtk_css_animated_style_new_advance (GtkCssAnimatedStyle *source,
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GtkCssStyle *base,
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gint64 timestamp)
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{
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GtkCssAnimatedStyle *result;
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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);
|
|
}
|