102 lines
2.8 KiB
C
102 lines
2.8 KiB
C
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/* GTK - The GIMP Toolkit
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* Copyright (C) 2014 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 "gtkcssunsetvalueprivate.h"
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#include "gtkcssinheritvalueprivate.h"
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#include "gtkcssinitialvalueprivate.h"
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#include "gtkcssstylepropertyprivate.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 G_GNUC_NORETURN
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gtk_css_value_unset_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_unset_compute (GtkCssValue *value,
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guint property_id,
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GtkStyleProvider *provider,
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GtkCssStyle *style,
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GtkCssStyle *parent_style)
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{
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GtkCssStyleProperty *property;
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GtkCssValue *unset_value;
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property = _gtk_css_style_property_lookup_by_id (property_id);
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if (_gtk_css_style_property_is_inherit (property))
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unset_value = _gtk_css_inherit_value_get ();
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else
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unset_value = _gtk_css_initial_value_get ();
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return _gtk_css_value_compute (unset_value,
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property_id,
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provider,
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style,
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parent_style);
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}
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static gboolean
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gtk_css_value_unset_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_unset_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_unset_print (const GtkCssValue *value,
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GString *string)
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{
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g_string_append (string, "unset");
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}
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static const GtkCssValueClass GTK_CSS_VALUE_UNSET = {
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"GtkCssUnsetValue",
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gtk_css_value_unset_free,
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gtk_css_value_unset_compute,
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gtk_css_value_unset_equal,
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gtk_css_value_unset_transition,
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NULL,
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NULL,
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gtk_css_value_unset_print
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};
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static GtkCssValue unset = { >K_CSS_VALUE_UNSET, 1 };
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GtkCssValue *
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_gtk_css_unset_value_new (void)
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{
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return _gtk_css_value_ref (&unset);
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}
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