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 "gtkcssstylefuncsprivate.h"
28 #include "gtkcssunsetvalueprivate.h"
29 #include "gtkintl.h"
30
31 enum {
32 PROP_0,
33 PROP_SUBPROPERTIES,
34 };
35
G_DEFINE_TYPE(GtkCssShorthandProperty,_gtk_css_shorthand_property,GTK_TYPE_STYLE_PROPERTY)36 G_DEFINE_TYPE (GtkCssShorthandProperty, _gtk_css_shorthand_property, GTK_TYPE_STYLE_PROPERTY)
37
38 static void
39 gtk_css_shorthand_property_set_property (GObject *object,
40 guint prop_id,
41 const GValue *value,
42 GParamSpec *pspec)
43 {
44 GtkCssShorthandProperty *property = GTK_CSS_SHORTHAND_PROPERTY (object);
45 const char **subproperties;
46 guint i;
47
48 switch (prop_id)
49 {
50 case PROP_SUBPROPERTIES:
51 subproperties = g_value_get_boxed (value);
52 g_assert (subproperties);
53 for (i = 0; subproperties[i] != NULL; i++)
54 {
55 GtkStyleProperty *subproperty = _gtk_style_property_lookup (subproperties[i]);
56 g_assert (GTK_IS_CSS_STYLE_PROPERTY (subproperty));
57 g_ptr_array_add (property->subproperties, subproperty);
58 }
59 break;
60 default:
61 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
62 break;
63 }
64 }
65
66 static void
_gtk_css_shorthand_property_assign(GtkStyleProperty * property,GtkStyleProperties * props,GtkStateFlags state,const GValue * value)67 _gtk_css_shorthand_property_assign (GtkStyleProperty *property,
68 GtkStyleProperties *props,
69 GtkStateFlags state,
70 const GValue *value)
71 {
72 GtkCssShorthandProperty *shorthand = GTK_CSS_SHORTHAND_PROPERTY (property);
73
74 shorthand->assign (shorthand, props, state, value);
75 }
76
77 static void
_gtk_css_shorthand_property_query(GtkStyleProperty * property,GValue * value,GtkStyleQueryFunc query_func,gpointer query_data)78 _gtk_css_shorthand_property_query (GtkStyleProperty *property,
79 GValue *value,
80 GtkStyleQueryFunc query_func,
81 gpointer query_data)
82 {
83 GtkCssShorthandProperty *shorthand = GTK_CSS_SHORTHAND_PROPERTY (property);
84
85 shorthand->query (shorthand, value, query_func, query_data);
86 }
87
88 static GtkCssValue *
gtk_css_shorthand_property_parse_value(GtkStyleProperty * property,GtkCssParser * parser)89 gtk_css_shorthand_property_parse_value (GtkStyleProperty *property,
90 GtkCssParser *parser)
91 {
92 GtkCssShorthandProperty *shorthand = GTK_CSS_SHORTHAND_PROPERTY (property);
93 GtkCssValue **data;
94 GtkCssValue *result;
95 guint i;
96
97 data = g_new0 (GtkCssValue *, shorthand->subproperties->len);
98
99 if (_gtk_css_parser_try (parser, "initial", TRUE))
100 {
101 /* the initial value can be explicitly specified with the
102 * ‘initial’ keyword which all properties accept.
103 */
104 for (i = 0; i < shorthand->subproperties->len; i++)
105 {
106 data[i] = _gtk_css_initial_value_new ();
107 }
108 }
109 else if (_gtk_css_parser_try (parser, "inherit", TRUE))
110 {
111 /* All properties accept the ‘inherit’ value which
112 * explicitly specifies that the value will be determined
113 * by inheritance. The ‘inherit’ value can be used to
114 * strengthen inherited values in the cascade, and it can
115 * also be used on properties that are not normally inherited.
116 */
117 for (i = 0; i < shorthand->subproperties->len; i++)
118 {
119 data[i] = _gtk_css_inherit_value_new ();
120 }
121 }
122 else if (_gtk_css_parser_try (parser, "unset", TRUE))
123 {
124 /* If the cascaded value of a property is the unset keyword,
125 * then if it is an inherited property, this is treated as
126 * inherit, and if it is not, this is treated as initial.
127 */
128 for (i = 0; i < shorthand->subproperties->len; i++)
129 {
130 data[i] = _gtk_css_unset_value_new ();
131 }
132 }
133 else if (!shorthand->parse (shorthand, data, parser))
134 {
135 for (i = 0; i < shorthand->subproperties->len; i++)
136 {
137 if (data[i] != NULL)
138 _gtk_css_value_unref (data[i]);
139 }
140 g_free (data);
141 return NULL;
142 }
143
144 /* All values that aren't set by the parse func are set to their
145 * default values here.
146 * XXX: Is the default always initial or can it be inherit? */
147 for (i = 0; i < shorthand->subproperties->len; i++)
148 {
149 if (data[i] == NULL)
150 data[i] = _gtk_css_initial_value_new ();
151 }
152
153 result = _gtk_css_array_value_new_from_array (data, shorthand->subproperties->len);
154 g_free (data);
155
156 return result;
157 }
158
159 static void
_gtk_css_shorthand_property_class_init(GtkCssShorthandPropertyClass * klass)160 _gtk_css_shorthand_property_class_init (GtkCssShorthandPropertyClass *klass)
161 {
162 GObjectClass *object_class = G_OBJECT_CLASS (klass);
163 GtkStylePropertyClass *property_class = GTK_STYLE_PROPERTY_CLASS (klass);
164
165 object_class->set_property = gtk_css_shorthand_property_set_property;
166
167 g_object_class_install_property (object_class,
168 PROP_SUBPROPERTIES,
169 g_param_spec_boxed ("subproperties",
170 P_("Subproperties"),
171 P_("The list of subproperties"),
172 G_TYPE_STRV,
173 G_PARAM_WRITABLE | G_PARAM_CONSTRUCT_ONLY));
174
175 property_class->assign = _gtk_css_shorthand_property_assign;
176 property_class->query = _gtk_css_shorthand_property_query;
177 property_class->parse_value = gtk_css_shorthand_property_parse_value;
178 }
179
180 static void
_gtk_css_shorthand_property_init(GtkCssShorthandProperty * shorthand)181 _gtk_css_shorthand_property_init (GtkCssShorthandProperty *shorthand)
182 {
183 shorthand->subproperties = g_ptr_array_new_with_free_func (g_object_unref);
184 }
185
186 GtkCssStyleProperty *
_gtk_css_shorthand_property_get_subproperty(GtkCssShorthandProperty * shorthand,guint property)187 _gtk_css_shorthand_property_get_subproperty (GtkCssShorthandProperty *shorthand,
188 guint property)
189 {
190 g_return_val_if_fail (GTK_IS_CSS_SHORTHAND_PROPERTY (shorthand), NULL);
191 g_return_val_if_fail (property < shorthand->subproperties->len, NULL);
192
193 return g_ptr_array_index (shorthand->subproperties, property);
194 }
195
196 guint
_gtk_css_shorthand_property_get_n_subproperties(GtkCssShorthandProperty * shorthand)197 _gtk_css_shorthand_property_get_n_subproperties (GtkCssShorthandProperty *shorthand)
198 {
199 g_return_val_if_fail (GTK_IS_CSS_SHORTHAND_PROPERTY (shorthand), 0);
200
201 return shorthand->subproperties->len;
202 }
203
204