forked from AuroraMiddleware/gtk
3a72e2fb24
Quoting the spec: If the cascaded value of a property is the unset keyword, then if it is an inherited property, this is treated as inherit, and if it is not, this is treated as initial. Spec in question: http://dev.w3.org/csswg/css-cascade/ Also use unset in the reset-to-defaults.css we use to reset css in reftests.
106 lines
3.0 KiB
C
106 lines
3.0 KiB
C
/* GTK - The GIMP Toolkit
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* Copyright (C) 2011 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 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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#include "config.h"
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#include "gtkcssinheritvalueprivate.h"
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#include "gtkcssinitialvalueprivate.h"
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#include "gtkstylecontextprivate.h"
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struct _GtkCssValue {
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GTK_CSS_VALUE_BASE
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};
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static void
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gtk_css_value_inherit_free (GtkCssValue *value)
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{
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/* Can only happen if the unique value gets unreffed too often */
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g_assert_not_reached ();
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}
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static GtkCssValue *
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gtk_css_value_inherit_compute (GtkCssValue *value,
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guint property_id,
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GtkStyleProviderPrivate *provider,
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int scale,
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GtkCssComputedValues *values,
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GtkCssComputedValues *parent_values,
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GtkCssDependencies *dependencies)
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{
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if (parent_values)
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{
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*dependencies = GTK_CSS_EQUALS_PARENT;
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return _gtk_css_value_ref (_gtk_css_computed_values_get_value (parent_values, property_id));
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}
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else
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{
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return _gtk_css_value_compute (_gtk_css_initial_value_get (),
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property_id,
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provider,
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scale,
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values,
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parent_values,
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dependencies);
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}
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}
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static gboolean
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gtk_css_value_inherit_equal (const GtkCssValue *value1,
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const GtkCssValue *value2)
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{
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return TRUE;
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}
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static GtkCssValue *
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gtk_css_value_inherit_transition (GtkCssValue *start,
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GtkCssValue *end,
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guint property_id,
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double progress)
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{
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return NULL;
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}
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static void
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gtk_css_value_inherit_print (const GtkCssValue *value,
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GString *string)
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{
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g_string_append (string, "inherit");
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}
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static const GtkCssValueClass GTK_CSS_VALUE_INHERIT = {
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gtk_css_value_inherit_free,
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gtk_css_value_inherit_compute,
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gtk_css_value_inherit_equal,
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gtk_css_value_inherit_transition,
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gtk_css_value_inherit_print
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};
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static GtkCssValue inherit = { >K_CSS_VALUE_INHERIT, 1 };
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GtkCssValue *
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_gtk_css_inherit_value_new (void)
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{
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return _gtk_css_value_ref (&inherit);
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}
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GtkCssValue *
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_gtk_css_inherit_value_get (void)
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{
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return &inherit;
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}
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