forked from AuroraMiddleware/gtk
789f6f3941
Most of the time when styles need to be recreated, the name and classes of the css node haven't changed. In this case, the change value will not change either, since we are computing change under the assumption that name and classes are unchanged. So don't recompute the change. This avoids the second match we do to find the superset, cutting down the number of times we consult the selector tree.
254 lines
7.4 KiB
C
254 lines
7.4 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 "gtkcssstaticstyleprivate.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 "gtkcssshorthandpropertyprivate.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 "gtkintl.h"
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#include "gtksettings.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 (GtkCssStaticStyle, gtk_css_static_style, GTK_TYPE_CSS_STYLE)
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static GtkCssValue *
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gtk_css_static_style_get_value (GtkCssStyle *style,
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guint id)
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{
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/* This is called a lot, so we avoid a dynamic type check here */
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GtkCssStaticStyle *sstyle = (GtkCssStaticStyle *) style;
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return sstyle->values[id];
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}
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static GtkCssSection *
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gtk_css_static_style_get_section (GtkCssStyle *style,
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guint id)
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{
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GtkCssStaticStyle *sstyle = GTK_CSS_STATIC_STYLE (style);
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if (sstyle->sections == NULL ||
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id >= sstyle->sections->len)
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return NULL;
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return g_ptr_array_index (sstyle->sections, id);
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}
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static void
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gtk_css_static_style_dispose (GObject *object)
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{
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GtkCssStaticStyle *style = GTK_CSS_STATIC_STYLE (object);
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guint i;
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for (i = 0; i < GTK_CSS_PROPERTY_N_PROPERTIES; i++)
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{
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if (style->values[i])
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_gtk_css_value_unref (style->values[i]);
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}
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if (style->sections)
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{
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g_ptr_array_unref (style->sections);
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style->sections = NULL;
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}
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G_OBJECT_CLASS (gtk_css_static_style_parent_class)->dispose (object);
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}
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static GtkCssStaticStyle *
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gtk_css_static_style_get_static_style (GtkCssStyle *style)
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{
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return (GtkCssStaticStyle *)style;
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}
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static void
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gtk_css_static_style_class_init (GtkCssStaticStyleClass *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_static_style_dispose;
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style_class->get_value = gtk_css_static_style_get_value;
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style_class->get_section = gtk_css_static_style_get_section;
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style_class->get_static_style = gtk_css_static_style_get_static_style;
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}
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static void
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gtk_css_static_style_init (GtkCssStaticStyle *style)
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{
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}
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static void
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maybe_unref_section (gpointer section)
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{
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if (section)
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gtk_css_section_unref (section);
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}
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static void
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gtk_css_static_style_set_value (GtkCssStaticStyle *style,
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guint id,
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GtkCssValue *value,
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GtkCssSection *section)
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{
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if (style->values[id])
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_gtk_css_value_unref (style->values[id]);
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style->values[id] = value;
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if (style->sections && style->sections->len > id && g_ptr_array_index (style->sections, id))
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{
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gtk_css_section_unref (g_ptr_array_index (style->sections, id));
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g_ptr_array_index (style->sections, id) = NULL;
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}
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if (section)
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{
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if (style->sections == NULL)
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style->sections = g_ptr_array_new_with_free_func (maybe_unref_section);
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if (style->sections->len <= id)
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g_ptr_array_set_size (style->sections, id + 1);
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g_ptr_array_index (style->sections, id) = gtk_css_section_ref (section);
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}
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}
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static GtkCssStyle *default_style;
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static void
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clear_default_style (gpointer data)
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{
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g_set_object (&default_style, NULL);
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}
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GtkCssStyle *
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gtk_css_static_style_get_default (void)
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{
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/* FIXME: This really depends on the screen, but we don't have
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* a screen at hand when we call this function, and in practice,
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* the default style is always replaced by something else
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* before we use it.
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*/
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if (default_style == NULL)
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{
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GtkSettings *settings;
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settings = gtk_settings_get_default ();
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default_style = gtk_css_static_style_new_compute (GTK_STYLE_PROVIDER (settings),
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NULL,
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NULL,
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TRUE);
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g_object_set_data_full (G_OBJECT (settings), I_("gtk-default-style"),
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default_style, clear_default_style);
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}
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return default_style;
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}
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GtkCssStyle *
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gtk_css_static_style_new_compute (GtkStyleProvider *provider,
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const GtkCssMatcher *matcher,
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GtkCssStyle *parent,
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GtkCssChange change)
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{
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GtkCssStaticStyle *result;
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GtkCssLookup lookup;
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_gtk_css_lookup_init (&lookup);
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if (matcher)
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gtk_style_provider_lookup (provider,
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matcher,
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&lookup,
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change == 0 ? &change : NULL);
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result = g_object_new (GTK_TYPE_CSS_STATIC_STYLE, NULL);
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result->change = change;
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_gtk_css_lookup_resolve (&lookup,
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provider,
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result,
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parent);
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_gtk_css_lookup_destroy (&lookup);
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return GTK_CSS_STYLE (result);
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}
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void
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gtk_css_static_style_compute_value (GtkCssStaticStyle *style,
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GtkStyleProvider *provider,
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GtkCssStyle *parent_style,
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guint id,
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GtkCssValue *specified,
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GtkCssSection *section)
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{
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GtkCssValue *value;
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gtk_internal_return_if_fail (id < GTK_CSS_PROPERTY_N_PROPERTIES);
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/* http://www.w3.org/TR/css3-cascade/#cascade
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* Then, for every element, the value for each property can be found
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* by following this pseudo-algorithm:
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* 1) Identify all declarations that apply to the element
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*/
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if (specified == NULL)
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{
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GtkCssStyleProperty *prop = _gtk_css_style_property_lookup_by_id (id);
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if (parent_style && _gtk_css_style_property_is_inherit (prop))
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{
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/* Just take the style from the parent */
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value = _gtk_css_value_ref (gtk_css_style_get_value (parent_style, id));
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}
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else
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{
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value = _gtk_css_initial_value_new_compute (id, provider, (GtkCssStyle *)style, parent_style);
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}
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}
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else
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{
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value = _gtk_css_value_compute (specified, id, provider, (GtkCssStyle *)style, parent_style);
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}
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gtk_css_static_style_set_value (style, id, value, section);
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}
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GtkCssChange
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gtk_css_static_style_get_change (GtkCssStaticStyle *style)
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{
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g_return_val_if_fail (GTK_IS_CSS_STATIC_STYLE (style), GTK_CSS_CHANGE_ANY);
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return style->change;
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}
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