1/*
2 * Copyright © 2011 Red Hat Inc.
3 *
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Lesser General Public
6 * License as published by the Free Software Foundation; either
7 * version 2.1 of the License, or (at your option) any later version.
8 *
9 * This library is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Lesser General Public License for more details.
13 *
14 * You should have received a copy of the GNU Lesser General Public
15 * License along with this library. If not, see <http://www.gnu.org/licenses/>.
16 *
17 * Authors: Benjamin Otte <otte@gnome.org>
18 */
19
20#include "config.h"
21
22#include "gtkcssshorthandpropertyprivate.h"
23
24#include "gtkcssarrayvalueprivate.h"
25#include "gtkcssinheritvalueprivate.h"
26#include "gtkcssinitialvalueprivate.h"
27#include "gtkcssunsetvalueprivate.h"
28#include "gtkintl.h"
29
30enum {
31 PROP_0,
32 PROP_SUBPROPERTIES,
33};
34
35G_DEFINE_TYPE (GtkCssShorthandProperty, _gtk_css_shorthand_property, GTK_TYPE_STYLE_PROPERTY)
36
37static void
38gtk_css_shorthand_property_set_property (GObject *object,
39 guint prop_id,
40 const GValue *value,
41 GParamSpec *pspec)
42{
43 GtkCssShorthandProperty *property = GTK_CSS_SHORTHAND_PROPERTY (object);
44 const char **subproperties;
45 guint i;
46
47 switch (prop_id)
48 {
49 case PROP_SUBPROPERTIES:
50 subproperties = g_value_get_boxed (value);
51 g_assert (subproperties);
52 for (i = 0; subproperties[i] != NULL; i++)
53 {
54 GtkStyleProperty *subproperty = _gtk_style_property_lookup (name: subproperties[i]);
55 g_assert (GTK_IS_CSS_STYLE_PROPERTY (subproperty));
56 g_ptr_array_add (array: property->subproperties, data: subproperty);
57 }
58 break;
59 default:
60 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
61 break;
62 }
63}
64
65static GtkCssValue *
66gtk_css_shorthand_property_parse_value (GtkStyleProperty *property,
67 GtkCssParser *parser)
68{
69 GtkCssShorthandProperty *shorthand = GTK_CSS_SHORTHAND_PROPERTY (property);
70 const guint n_props = shorthand->subproperties->len;
71 GtkCssValue **data;
72 GtkCssValue *result;
73 guint i;
74
75 data = g_newa (GtkCssValue *, n_props);
76 memset (s: data, c: 0, n: sizeof (GtkCssValue *) * n_props);
77
78 if (gtk_css_parser_try_ident (self: parser, ident: "initial"))
79 {
80 /* the initial value can be explicitly specified with the
81 * ‘initial’ keyword which all properties accept.
82 */
83 return _gtk_css_initial_value_new ();
84 }
85 else if (gtk_css_parser_try_ident (self: parser, ident: "inherit"))
86 {
87 /* All properties accept the ‘inherit’ value which
88 * explicitly specifies that the value will be determined
89 * by inheritance. The ‘inherit’ value can be used to
90 * strengthen inherited values in the cascade, and it can
91 * also be used on properties that are not normally inherited.
92 */
93 return _gtk_css_inherit_value_new ();
94 }
95 else if (gtk_css_parser_try_ident (self: parser, ident: "unset"))
96 {
97 /* If the cascaded value of a property is the unset keyword,
98 * then if it is an inherited property, this is treated as
99 * inherit, and if it is not, this is treated as initial.
100 */
101 return _gtk_css_unset_value_new ();
102 }
103 else if (!shorthand->parse (shorthand, data, parser))
104 {
105 for (i = 0; i < n_props; i++)
106 {
107 if (data[i] != NULL)
108 _gtk_css_value_unref (value: data[i]);
109 }
110 return NULL;
111 }
112
113 /* All values that aren't set by the parse func are set to their
114 * default values here.
115 * XXX: Is the default always initial or can it be inherit? */
116 for (i = 0; i < n_props; i++)
117 {
118 if (data[i] == NULL)
119 data[i] = _gtk_css_initial_value_new ();
120 }
121
122 result = _gtk_css_array_value_new_from_array (values: data, n_values: n_props);
123
124 return result;
125}
126
127static void
128_gtk_css_shorthand_property_class_init (GtkCssShorthandPropertyClass *klass)
129{
130 GObjectClass *object_class = G_OBJECT_CLASS (klass);
131 GtkStylePropertyClass *property_class = GTK_STYLE_PROPERTY_CLASS (klass);
132
133 object_class->set_property = gtk_css_shorthand_property_set_property;
134
135 g_object_class_install_property (oclass: object_class,
136 property_id: PROP_SUBPROPERTIES,
137 pspec: g_param_spec_boxed (name: "subproperties",
138 P_("Subproperties"),
139 P_("The list of subproperties"),
140 G_TYPE_STRV,
141 flags: G_PARAM_WRITABLE | G_PARAM_CONSTRUCT_ONLY));
142
143 property_class->parse_value = gtk_css_shorthand_property_parse_value;
144}
145
146static void
147_gtk_css_shorthand_property_init (GtkCssShorthandProperty *shorthand)
148{
149 shorthand->subproperties = g_ptr_array_new_with_free_func (element_free_func: g_object_unref);
150}
151
152GtkCssStyleProperty *
153_gtk_css_shorthand_property_get_subproperty (GtkCssShorthandProperty *shorthand,
154 guint property)
155{
156 g_return_val_if_fail (GTK_IS_CSS_SHORTHAND_PROPERTY (shorthand), NULL);
157 g_return_val_if_fail (property < shorthand->subproperties->len, NULL);
158
159 return g_ptr_array_index (shorthand->subproperties, property);
160}
161
162guint
163_gtk_css_shorthand_property_get_n_subproperties (GtkCssShorthandProperty *shorthand)
164{
165 g_return_val_if_fail (GTK_IS_CSS_SHORTHAND_PROPERTY (shorthand), 0);
166
167 return shorthand->subproperties->len;
168}
169
170

source code of gtk/gtk/gtkcssshorthandproperty.c