1 /*
2  * Copyright © 2012 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: Alexander Larsson <alexl@gnome.org>
18  */
19 
20 #ifndef __GTK_CSS_VALUE_PRIVATE_H__
21 #define __GTK_CSS_VALUE_PRIVATE_H__
22 
23 #include <glib-object.h>
24 #include "gtkcsstypesprivate.h"
25 
26 G_BEGIN_DECLS
27 
28 #define GTK_TYPE_CSS_VALUE           (_gtk_css_value_get_type ())
29 
30 /* A GtkCssValue is a refcounted immutable value type */
31 
32 typedef struct _GtkCssValue           GtkCssValue;
33 typedef struct _GtkCssValueClass      GtkCssValueClass;
34 
35 /* using define instead of struct here so compilers get the packing right */
36 #define GTK_CSS_VALUE_BASE \
37   const GtkCssValueClass *class; \
38   gint ref_count;
39 
40 struct _GtkCssValueClass {
41   void          (* free)                              (GtkCssValue                *value);
42 
43   GtkCssValue * (* compute)                           (GtkCssValue                *value,
44                                                        guint                       property_id,
45                                                        GtkStyleProviderPrivate    *provider,
46                                                        GtkCssStyle                *style,
47                                                        GtkCssStyle                *parent_style);
48   gboolean      (* equal)                             (const GtkCssValue          *value1,
49                                                        const GtkCssValue          *value2);
50   GtkCssValue * (* transition)                        (GtkCssValue                *start,
51                                                        GtkCssValue                *end,
52                                                        guint                       property_id,
53                                                        double                      progress);
54   void          (* print)                             (const GtkCssValue          *value,
55                                                        GString                    *string);
56 };
57 
58 GType        _gtk_css_value_get_type                  (void) G_GNUC_CONST;
59 
60 GtkCssValue *_gtk_css_value_alloc                     (const GtkCssValueClass     *klass,
61                                                        gsize                       size);
62 #define _gtk_css_value_new(_name, _klass) ((_name *) _gtk_css_value_alloc ((_klass), sizeof (_name)))
63 
64 GtkCssValue *_gtk_css_value_ref                       (GtkCssValue                *value);
65 void         _gtk_css_value_unref                     (GtkCssValue                *value);
66 
67 GtkCssValue *_gtk_css_value_compute                   (GtkCssValue                *value,
68                                                        guint                       property_id,
69                                                        GtkStyleProviderPrivate    *provider,
70                                                        GtkCssStyle                *style,
71                                                        GtkCssStyle                *parent_style);
72 gboolean     _gtk_css_value_equal                     (const GtkCssValue          *value1,
73                                                        const GtkCssValue          *value2);
74 gboolean     _gtk_css_value_equal0                    (const GtkCssValue          *value1,
75                                                        const GtkCssValue          *value2);
76 GtkCssValue *_gtk_css_value_transition                (GtkCssValue                *start,
77                                                        GtkCssValue                *end,
78                                                        guint                       property_id,
79                                                        double                      progress);
80 
81 char *       _gtk_css_value_to_string                 (const GtkCssValue          *value);
82 void         _gtk_css_value_print                     (const GtkCssValue          *value,
83                                                        GString                    *string);
84 
85 G_END_DECLS
86 
87 #endif /* __GTK_CSS_VALUE_PRIVATE_H__ */
88