Pileus Git - ~andy/gtk/blob - modules/other/gail/gailarrow.c

   1 /* GAIL - The GNOME Accessibility Implementation Library
   2  * Copyright 2001 Sun Microsystems 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 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, write to the
  16  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  17  * Boston, MA 02111-1307, USA.
  18  */
  19
  20 #include "config.h"
  21
  22 #include <gtk/gtk.h>
  23 #include "gailarrow.h"
  24
  25 static void gail_arrow_class_init       (GailArrowClass *klass);
  26 static void gail_arrow_init             (GailArrow      *arrow);
  27 static void gail_arrow_initialize       (AtkObject      *accessible,
  28                                          gpointer        data);
  29
  30 /* AtkImage */
  31 static void  atk_image_interface_init   (AtkImageIface  *iface);
  32 static const gchar* gail_arrow_get_image_description
  33                                         (AtkImage       *obj);
  34 static gboolean gail_arrow_set_image_description
  35                                         (AtkImage       *obj,
  36                                         const gchar    *description);
  37 static void  gail_arrow_finalize       (GObject         *object);
  38
  39 G_DEFINE_TYPE_WITH_CODE (GailArrow, gail_arrow, GAIL_TYPE_WIDGET,
  40                          G_IMPLEMENT_INTERFACE (ATK_TYPE_IMAGE, atk_image_interface_init))
  41
  42 static void
  43 gail_arrow_class_init           (GailArrowClass *klass)
  44 {
  45   GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
  46   AtkObjectClass *atk_object_class = ATK_OBJECT_CLASS (klass);
  47
  48   atk_object_class->initialize = gail_arrow_initialize;
  49
  50   gobject_class->finalize = gail_arrow_finalize;
  51 }
  52
  53 static void
  54 gail_arrow_init (GailArrow *arrow)
  55 {
  56   arrow->image_description = NULL;
  57 }
  58
  59 static void
  60 gail_arrow_initialize (AtkObject *accessible,
  61                        gpointer data)
  62 {
  63   ATK_OBJECT_CLASS (gail_arrow_parent_class)->initialize (accessible, data);
  64
  65   accessible->role = ATK_ROLE_ICON;
  66 }
  67
  68 static void
  69 atk_image_interface_init (AtkImageIface *iface)
  70 {
  71   iface->get_image_description = gail_arrow_get_image_description;
  72   iface->set_image_description = gail_arrow_set_image_description;
  73 }
  74
  75 static const gchar*
  76 gail_arrow_get_image_description (AtkImage       *obj)
  77 {
  78   GailArrow* arrow;
  79
  80   g_return_val_if_fail(GAIL_IS_ARROW(obj), NULL);
  81
  82   arrow = GAIL_ARROW (obj);
  83
  84   return arrow->image_description;
  85 }
  86
  87 static gboolean
  88 gail_arrow_set_image_description (AtkImage       *obj,
  89                                   const gchar    *description)
  90 {
  91   GailArrow* arrow;
  92
  93   g_return_val_if_fail(GAIL_IS_ARROW(obj), FALSE);
  94
  95   arrow = GAIL_ARROW (obj);
  96   g_free (arrow->image_description);
  97
  98   arrow->image_description = g_strdup (description);
  99
 100   return TRUE;
 101
 102 }
 103
 104 /*
 105  * static void
 106  * gail_arrow_get_image_size (AtkImage       *obj,
 107  *                          gint           *height,
 108  *                          gint           *width)
 109  *
 110  * We dont implement this function for GailArrow as gtk hardcodes the size
 111  * of the arrow to be 7x5 and it is not possible to query this.
 112  */
 113
 114 static void
 115 gail_arrow_finalize (GObject      *object)
 116 {
 117   GailArrow *arrow = GAIL_ARROW (object);
 118
 119   g_free (arrow->image_description);
 120   G_OBJECT_CLASS (gail_arrow_parent_class)->finalize (object);
 121 }