Pileus Git - ~andy/gtk/blob - gtk/a11y/gailimagecell.c

   1 /* GAIL - The GNOME Accessibility Enabling 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 "gailimagecell.h"
  24
  25 static void      gail_image_cell_class_init          (GailImageCellClass *klass);
  26 static void      gail_image_cell_init                (GailImageCell      *image_cell);
  27
  28 static void      gail_image_cell_finalize            (GObject            *object);
  29
  30 /* AtkImage */
  31 static void      atk_image_interface_init              (AtkImageIface  *iface);
  32 static const gchar *
  33                  gail_image_cell_get_image_description (AtkImage       *image);
  34 static gboolean  gail_image_cell_set_image_description (AtkImage       *image,
  35                                                         const gchar    *description);
  36 static void      gail_image_cell_get_image_position    (AtkImage       *image,
  37                                                         gint           *x,
  38                                                         gint           *y,
  39                                                         AtkCoordType   coord_type);
  40 static void      gail_image_cell_get_image_size        (AtkImage       *image,
  41                                                         gint           *width,
  42                                                         gint           *height);
  43
  44 /* Misc */
  45
  46 static gboolean  gail_image_cell_update_cache          (GailRendererCell *cell,
  47                                                         gboolean         emit_change_signal);
  48
  49 // FIXMEchpe static!!!
  50 gchar *gail_image_cell_property_list[] = {
  51   "pixbuf",
  52   NULL
  53 };
  54
  55 G_DEFINE_TYPE_WITH_CODE (GailImageCell, gail_image_cell, GAIL_TYPE_RENDERER_CELL,
  56                          G_IMPLEMENT_INTERFACE (ATK_TYPE_IMAGE, atk_image_interface_init))
  57
  58 static void
  59 gail_image_cell_class_init (GailImageCellClass *klass)
  60 {
  61   GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
  62   GailRendererCellClass *renderer_cell_class = GAIL_RENDERER_CELL_CLASS(klass);
  63
  64   gobject_class->finalize = gail_image_cell_finalize;
  65
  66   renderer_cell_class->update_cache = gail_image_cell_update_cache;
  67   renderer_cell_class->property_list = gail_image_cell_property_list;
  68 }
  69
  70 AtkObject*
  71 gail_image_cell_new (void)
  72 {
  73   GObject *object;
  74   AtkObject *atk_object;
  75   GailRendererCell *cell;
  76
  77   object = g_object_new (GAIL_TYPE_IMAGE_CELL, NULL);
  78
  79   g_return_val_if_fail (object != NULL, NULL);
  80
  81   atk_object = ATK_OBJECT (object);
  82   atk_object->role = ATK_ROLE_TABLE_CELL;
  83
  84   cell = GAIL_RENDERER_CELL(object);
  85
  86   cell->renderer = gtk_cell_renderer_pixbuf_new ();
  87   g_object_ref_sink (cell->renderer);
  88   return atk_object;
  89 }
  90
  91 static void
  92 gail_image_cell_init (GailImageCell *image_cell)
  93 {
  94   image_cell->image_description = NULL;
  95 }
  96
  97
  98 static void
  99 gail_image_cell_finalize (GObject *object)
 100 {
 101   GailImageCell *image_cell = GAIL_IMAGE_CELL (object);
 102
 103   g_free (image_cell->image_description);
 104   G_OBJECT_CLASS (gail_image_cell_parent_class)->finalize (object);
 105 }
 106
 107 static gboolean
 108 gail_image_cell_update_cache (GailRendererCell *cell,
 109                               gboolean         emit_change_signal)
 110 {
 111   return FALSE;
 112 }
 113
 114 static void
 115 atk_image_interface_init (AtkImageIface  *iface)
 116 {
 117   iface->get_image_description = gail_image_cell_get_image_description;
 118   iface->set_image_description = gail_image_cell_set_image_description;
 119   iface->get_image_position = gail_image_cell_get_image_position;
 120   iface->get_image_size = gail_image_cell_get_image_size;
 121 }
 122
 123 static const gchar *
 124 gail_image_cell_get_image_description (AtkImage     *image)
 125 {
 126   GailImageCell *image_cell;
 127
 128   image_cell = GAIL_IMAGE_CELL (image);
 129   return image_cell->image_description;
 130 }
 131
 132 static gboolean
 133 gail_image_cell_set_image_description (AtkImage     *image,
 134                                        const gchar  *description)
 135 {
 136   GailImageCell *image_cell;
 137
 138   image_cell = GAIL_IMAGE_CELL (image);
 139   g_free (image_cell->image_description);
 140   image_cell->image_description = g_strdup (description);
 141   if (image_cell->image_description)
 142     return TRUE;
 143   else
 144     return FALSE;
 145 }
 146
 147 static void
 148 gail_image_cell_get_image_position (AtkImage     *image,
 149                                     gint         *x,
 150                                     gint         *y,
 151                                     AtkCoordType coord_type)
 152 {
 153   atk_component_get_position (ATK_COMPONENT (image), x, y, coord_type);
 154 }
 155
 156 static void
 157 gail_image_cell_get_image_size (AtkImage *image,
 158                                 gint     *width,
 159                                 gint     *height)
 160 {
 161   GailImageCell *cell = GAIL_IMAGE_CELL (image);
 162   GtkCellRenderer *cell_renderer;
 163   GdkPixbuf *pixbuf;
 164
 165   cell_renderer  = GAIL_RENDERER_CELL (cell)->renderer;
 166   g_object_get (GTK_CELL_RENDERER_PIXBUF (cell_renderer), "pixbuf", &pixbuf, NULL);
 167
 168   *width = gdk_pixbuf_get_width (pixbuf);
 169   *height = gdk_pixbuf_get_height (pixbuf);
 170 }