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C/C++ Source or Header  |  2006-04-25  |  5.0 KB  |  122 lines
  1. /* gtktreednd.h
  2.  * Copyright (C) 2001  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 Library 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.  * Library General Public License for more details.
  13.  *
  14.  * You should have received a copy of the GNU Library 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. #ifndef __GTK_TREE_DND_H__
  21. #define __GTK_TREE_DND_H__
  22.  
  23. #include <gtk/gtktreemodel.h>
  24. #include <gtk/gtkdnd.h>
  25.  
  26. G_BEGIN_DECLS
  27.  
  28. #define GTK_TYPE_TREE_DRAG_SOURCE            (gtk_tree_drag_source_get_type ())
  29. #define GTK_TREE_DRAG_SOURCE(obj)            (G_TYPE_CHECK_INSTANCE_CAST ((obj), GTK_TYPE_TREE_DRAG_SOURCE, GtkTreeDragSource))
  30. #define GTK_IS_TREE_DRAG_SOURCE(obj)         (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GTK_TYPE_TREE_DRAG_SOURCE))
  31. #define GTK_TREE_DRAG_SOURCE_GET_IFACE(obj)  (G_TYPE_INSTANCE_GET_INTERFACE ((obj), GTK_TYPE_TREE_DRAG_SOURCE, GtkTreeDragSourceIface))
  32.  
  33. typedef struct _GtkTreeDragSource      GtkTreeDragSource; /* Dummy typedef */
  34. typedef struct _GtkTreeDragSourceIface GtkTreeDragSourceIface;
  35.  
  36. struct _GtkTreeDragSourceIface
  37. {
  38.   GTypeInterface g_iface;
  39.  
  40.   /* VTable - not signals */
  41.  
  42.   gboolean     (* row_draggable)        (GtkTreeDragSource   *drag_source,
  43.                                          GtkTreePath         *path);
  44.  
  45.   gboolean     (* drag_data_get)        (GtkTreeDragSource   *drag_source,
  46.                                          GtkTreePath         *path,
  47.                                          GtkSelectionData    *selection_data);
  48.  
  49.   gboolean     (* drag_data_delete)     (GtkTreeDragSource *drag_source,
  50.                                          GtkTreePath       *path);
  51. };
  52.  
  53. GType           gtk_tree_drag_source_get_type   (void) G_GNUC_CONST;
  54.  
  55. /* Returns whether the given row can be dragged */
  56. gboolean gtk_tree_drag_source_row_draggable    (GtkTreeDragSource *drag_source,
  57.                                                 GtkTreePath       *path);
  58.  
  59. /* Deletes the given row, or returns FALSE if it can't */
  60. gboolean gtk_tree_drag_source_drag_data_delete (GtkTreeDragSource *drag_source,
  61.                                                 GtkTreePath       *path);
  62.  
  63. /* Fills in selection_data with type selection_data->target based on
  64.  * the row denoted by path, returns TRUE if it does anything
  65.  */
  66. gboolean gtk_tree_drag_source_drag_data_get    (GtkTreeDragSource *drag_source,
  67.                                                 GtkTreePath       *path,
  68.                                                 GtkSelectionData  *selection_data);
  69.  
  70. #define GTK_TYPE_TREE_DRAG_DEST            (gtk_tree_drag_dest_get_type ())
  71. #define GTK_TREE_DRAG_DEST(obj)            (G_TYPE_CHECK_INSTANCE_CAST ((obj), GTK_TYPE_TREE_DRAG_DEST, GtkTreeDragDest))
  72. #define GTK_IS_TREE_DRAG_DEST(obj)         (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GTK_TYPE_TREE_DRAG_DEST))
  73. #define GTK_TREE_DRAG_DEST_GET_IFACE(obj)  (G_TYPE_INSTANCE_GET_INTERFACE ((obj), GTK_TYPE_TREE_DRAG_DEST, GtkTreeDragDestIface))
  74.  
  75. typedef struct _GtkTreeDragDest      GtkTreeDragDest; /* Dummy typedef */
  76. typedef struct _GtkTreeDragDestIface GtkTreeDragDestIface;
  77.  
  78. struct _GtkTreeDragDestIface
  79. {
  80.   GTypeInterface g_iface;
  81.  
  82.   /* VTable - not signals */
  83.  
  84.   gboolean     (* drag_data_received) (GtkTreeDragDest   *drag_dest,
  85.                                        GtkTreePath       *dest,
  86.                                        GtkSelectionData  *selection_data);
  87.  
  88.   gboolean     (* row_drop_possible)  (GtkTreeDragDest   *drag_dest,
  89.                                        GtkTreePath       *dest_path,
  90.                        GtkSelectionData  *selection_data);
  91. };
  92.  
  93. GType           gtk_tree_drag_dest_get_type   (void) G_GNUC_CONST;
  94.  
  95. /* Inserts a row before dest which contains data in selection_data,
  96.  * or returns FALSE if it can't
  97.  */
  98. gboolean gtk_tree_drag_dest_drag_data_received (GtkTreeDragDest   *drag_dest,
  99.                         GtkTreePath       *dest,
  100.                         GtkSelectionData  *selection_data);
  101.  
  102.  
  103. /* Returns TRUE if we can drop before path; path may not exist. */
  104. gboolean gtk_tree_drag_dest_row_drop_possible  (GtkTreeDragDest   *drag_dest,
  105.                         GtkTreePath       *dest_path,
  106.                         GtkSelectionData  *selection_data);
  107.  
  108.  
  109. /* The selection data would normally have target type GTK_TREE_MODEL_ROW in this
  110.  * case. If the target is wrong these functions return FALSE.
  111.  */
  112. gboolean gtk_tree_set_row_drag_data            (GtkSelectionData  *selection_data,
  113.                         GtkTreeModel      *tree_model,
  114.                         GtkTreePath       *path);
  115. gboolean gtk_tree_get_row_drag_data            (GtkSelectionData  *selection_data,
  116.                         GtkTreeModel     **tree_model,
  117.                         GtkTreePath      **path);
  118.  
  119. G_END_DECLS
  120.  
  121. #endif /* __GTK_TREE_DND_H__ */
  122.