Pileus Git - ~andy/gtk/blob - gtk/gtkcssvalueprivate.h

   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 #include "gtksymboliccolor.h"
  26 #include "gtktypes.h"
  27
  28 G_BEGIN_DECLS
  29
  30 #define GTK_TYPE_CSS_VALUE           (_gtk_css_value_get_type ())
  31
  32 /* A GtkCssValue is a refcounted immutable value type */
  33
  34 typedef struct _GtkCssValue           GtkCssValue;
  35 typedef struct _GtkCssValueClass      GtkCssValueClass;
  36
  37 /* using define instead of struct here so compilers get the packing right */
  38 #define GTK_CSS_VALUE_BASE \
  39   const GtkCssValueClass *class; \
  40   volatile gint ref_count;
  41
  42 struct _GtkCssValueClass {
  43   void          (* free)                              (GtkCssValue                *value);
  44
  45   GtkCssValue * (* compute)                           (GtkCssValue                *value,
  46                                                        guint                       property_id,
  47                                                        GtkStyleContext            *context);
  48   gboolean      (* equal)                             (const GtkCssValue          *value1,
  49                                                        const GtkCssValue          *value2);
  50   GtkCssValue * (* transition)                        (GtkCssValue                *start,
  51                                                        GtkCssValue                *end,
  52                                                        double                      progress);
  53   void          (* print)                             (const GtkCssValue          *value,
  54                                                        GString                    *string);
  55 };
  56
  57 GType        _gtk_css_value_get_type                  (void) G_GNUC_CONST;
  58
  59 GtkCssValue *_gtk_css_value_alloc                     (const GtkCssValueClass     *klass,
  60                                                        gsize                       size);
  61 #define _gtk_css_value_new(_name, _klass) ((_name *) _gtk_css_value_alloc ((_klass), sizeof (_name)))
  62
  63 GtkCssValue *_gtk_css_value_ref                       (GtkCssValue                *value);
  64 void         _gtk_css_value_unref                     (GtkCssValue                *value);
  65
  66 GtkCssValue *_gtk_css_value_compute                   (GtkCssValue                *value,
  67                                                        guint                       property_id,
  68                                                        GtkStyleContext            *context);
  69 gboolean     _gtk_css_value_equal                     (const GtkCssValue          *value1,
  70                                                        const GtkCssValue          *value2);
  71 gboolean     _gtk_css_value_equal0                    (const GtkCssValue          *value1,
  72                                                        const GtkCssValue          *value2);
  73 GtkCssValue *_gtk_css_value_transition                (GtkCssValue                *start,
  74                                                        GtkCssValue                *end,
  75                                                        double                      progress);
  76
  77 char *       _gtk_css_value_to_string                 (const GtkCssValue          *value);
  78 void         _gtk_css_value_print                     (const GtkCssValue          *value,
  79                                                        GString                    *string);
  80
  81 G_END_DECLS
  82
  83 #endif /* __GTK_CSS_VALUE_PRIVATE_H__ */