gtk2/gtk/gtkcssshorthandproperty.c
Benjamin Otte dd83f9ca86 API: Remove API to set CSS properties from GValues
This API was only used in GtkModifierStyle and GtkStyleProperties and
they are both on their way out.

CSS properties must now be set using strings via the regular parser API.
2016-10-16 18:17:21 +02:00

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/*
* Copyright © 2011 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 "gtkcssshorthandpropertyprivate.h"
#include "gtkcssarrayvalueprivate.h"
#include "gtkcssinheritvalueprivate.h"
#include "gtkcssinitialvalueprivate.h"
#include "gtkcssstylefuncsprivate.h"
#include "gtkcssunsetvalueprivate.h"
#include "gtkintl.h"
enum {
PROP_0,
PROP_SUBPROPERTIES,
};
G_DEFINE_TYPE (GtkCssShorthandProperty, _gtk_css_shorthand_property, GTK_TYPE_STYLE_PROPERTY)
static void
gtk_css_shorthand_property_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec)
{
GtkCssShorthandProperty *property = GTK_CSS_SHORTHAND_PROPERTY (object);
const char **subproperties;
guint i;
switch (prop_id)
{
case PROP_SUBPROPERTIES:
subproperties = g_value_get_boxed (value);
g_assert (subproperties);
for (i = 0; subproperties[i] != NULL; i++)
{
GtkStyleProperty *subproperty = _gtk_style_property_lookup (subproperties[i]);
g_assert (GTK_IS_CSS_STYLE_PROPERTY (subproperty));
g_ptr_array_add (property->subproperties, subproperty);
}
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
_gtk_css_shorthand_property_query (GtkStyleProperty *property,
GValue *value,
GtkStyleQueryFunc query_func,
gpointer query_data)
{
GtkCssShorthandProperty *shorthand = GTK_CSS_SHORTHAND_PROPERTY (property);
shorthand->query (shorthand, value, query_func, query_data);
}
static GtkCssValue *
gtk_css_shorthand_property_parse_value (GtkStyleProperty *property,
GtkCssParser *parser)
{
GtkCssShorthandProperty *shorthand = GTK_CSS_SHORTHAND_PROPERTY (property);
GtkCssValue **data;
GtkCssValue *result;
guint i;
data = g_new0 (GtkCssValue *, shorthand->subproperties->len);
if (_gtk_css_parser_try (parser, "initial", TRUE))
{
/* the initial value can be explicitly specified with the
* initial keyword which all properties accept.
*/
for (i = 0; i < shorthand->subproperties->len; i++)
{
data[i] = _gtk_css_initial_value_new ();
}
}
else if (_gtk_css_parser_try (parser, "inherit", TRUE))
{
/* All properties accept the inherit value which
* explicitly specifies that the value will be determined
* by inheritance. The inherit value can be used to
* strengthen inherited values in the cascade, and it can
* also be used on properties that are not normally inherited.
*/
for (i = 0; i < shorthand->subproperties->len; i++)
{
data[i] = _gtk_css_inherit_value_new ();
}
}
else if (_gtk_css_parser_try (parser, "unset", TRUE))
{
/* 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.
*/
for (i = 0; i < shorthand->subproperties->len; i++)
{
data[i] = _gtk_css_unset_value_new ();
}
}
else if (!shorthand->parse (shorthand, data, parser))
{
for (i = 0; i < shorthand->subproperties->len; i++)
{
if (data[i] != NULL)
_gtk_css_value_unref (data[i]);
}
g_free (data);
return NULL;
}
/* All values that aren't set by the parse func are set to their
* default values here.
* XXX: Is the default always initial or can it be inherit? */
for (i = 0; i < shorthand->subproperties->len; i++)
{
if (data[i] == NULL)
data[i] = _gtk_css_initial_value_new ();
}
result = _gtk_css_array_value_new_from_array (data, shorthand->subproperties->len);
g_free (data);
return result;
}
static void
_gtk_css_shorthand_property_class_init (GtkCssShorthandPropertyClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
GtkStylePropertyClass *property_class = GTK_STYLE_PROPERTY_CLASS (klass);
object_class->set_property = gtk_css_shorthand_property_set_property;
g_object_class_install_property (object_class,
PROP_SUBPROPERTIES,
g_param_spec_boxed ("subproperties",
P_("Subproperties"),
P_("The list of subproperties"),
G_TYPE_STRV,
G_PARAM_WRITABLE | G_PARAM_CONSTRUCT_ONLY));
property_class->query = _gtk_css_shorthand_property_query;
property_class->parse_value = gtk_css_shorthand_property_parse_value;
}
static void
_gtk_css_shorthand_property_init (GtkCssShorthandProperty *shorthand)
{
shorthand->subproperties = g_ptr_array_new_with_free_func (g_object_unref);
}
GtkCssStyleProperty *
_gtk_css_shorthand_property_get_subproperty (GtkCssShorthandProperty *shorthand,
guint property)
{
g_return_val_if_fail (GTK_IS_CSS_SHORTHAND_PROPERTY (shorthand), NULL);
g_return_val_if_fail (property < shorthand->subproperties->len, NULL);
return g_ptr_array_index (shorthand->subproperties, property);
}
guint
_gtk_css_shorthand_property_get_n_subproperties (GtkCssShorthandProperty *shorthand)
{
g_return_val_if_fail (GTK_IS_CSS_SHORTHAND_PROPERTY (shorthand), 0);
return shorthand->subproperties->len;
}