lib/rb-tree-dnd.h

   1 /* rbtreednd.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., 51 Franklin St, Fifth Floor,
  17  * Boston, MA 02110-1301  USA.
  18  */
  19
  20 #ifndef __RB_TREE_DND_H__
  21 #define __RB_TREE_DND_H__
  22
  23 #include <gtk/gtktreemodel.h>
  24 #include <gtk/gtktreeview.h>
  25 #include <gtk/gtkdnd.h>
  26
  27 G_BEGIN_DECLS
  28
  29 #define RB_TYPE_TREE_DRAG_SOURCE            (rb_tree_drag_source_get_type ())
  30 #define RB_TREE_DRAG_SOURCE(obj)            (G_TYPE_CHECK_INSTANCE_CAST ((obj), RB_TYPE_TREE_DRAG_SOURCE, RbTreeDragSource))
  31 #define RB_IS_TREE_DRAG_SOURCE(obj)         (G_TYPE_CHECK_INSTANCE_TYPE ((obj), RB_TYPE_TREE_DRAG_SOURCE))
  32 #define RB_TREE_DRAG_SOURCE_GET_IFACE(obj)  (G_TYPE_INSTANCE_GET_INTERFACE ((obj), RB_TYPE_TREE_DRAG_SOURCE, RbTreeDragSourceIface))
  33
  34 #define RB_TYPE_TREE_DRAG_DEST              (rb_tree_drag_dest_get_type ())
  35 #define RB_TREE_DRAG_DEST(obj)             (G_TYPE_CHECK_INSTANCE_CAST ((obj), RB_TYPE_TREE_DRAG_DEST, RbTreeDragDest))
  36 #define RB_IS_TREE_DRAG_DEST(obj)           (G_TYPE_CHECK_INSTANCE_TYPE ((obj), RB_TYPE_TREE_DRAG_DEST))
  37 #define RB_TREE_DRAG_DEST_GET_IFACE(obj)    (G_TYPE_INSTANCE_GET_INTERFACE ((obj), RB_TYPE_TREE_DRAG_DEST, RbTreeDragDestIface))
  38
  39
  40 typedef struct _RbTreeDragSource      RbTreeDragSource; /* Dummy typedef */
  41 typedef struct _RbTreeDragSourceIface RbTreeDragSourceIface;
  42
  43
  44 typedef struct _RbTreeDragDest      RbTreeDragDest; /* Dummy typedef */
  45 typedef struct _RbTreeDragDestIface RbTreeDragDestIface;
  46
  47 typedef enum {
  48         RB_TREE_DEST_EMPTY_VIEW_DROP = 1 << 0,
  49         RB_TREE_DEST_CAN_DROP_INTO = 1 << 1,
  50         RB_TREE_DEST_CAN_DROP_BETWEEN = 1 << 2,
  51         RB_TREE_DEST_SELECT_ON_DRAG_TIMEOUT = 1 << 3
  52 } RbTreeDestFlag;
  53
  54
  55 struct _RbTreeDragSourceIface
  56 {
  57         GTypeInterface g_iface;
  58
  59         /* VTable - not signals */
  60         gboolean     (* row_draggable)        (RbTreeDragSource   *drag_source,
  61                                       GList              *path_list);
  62
  63         gboolean     (* drag_data_get)        (RbTreeDragSource   *drag_source,
  64                                          GList              *path_list,
  65                                          GtkSelectionData   *selection_data);
  66
  67         gboolean     (* drag_data_delete)     (RbTreeDragSource *drag_source,
  68                                          GList            *path_list);
  69 };
  70
  71
  72 struct _RbTreeDragDestIface {
  73
  74         GTypeInterface g_iface;
  75
  76         /* VTable - not signals */
  77
  78         gboolean (* drag_data_received) (RbTreeDragDest   *drag_dest,
  79                                          GtkTreePath       *dest,
  80                                          GtkTreeViewDropPosition pos,
  81                                          GtkSelectionData  *selection_data);
  82
  83         gboolean (* row_drop_possible)  (RbTreeDragDest   *drag_dest,
  84                                          GtkTreePath       *dest_path,
  85                                          GtkTreeViewDropPosition pos,
  86                                          GtkSelectionData  *selection_data);
  87
  88         gboolean (* row_drop_position) (RbTreeDragDest   *drag_dest,
  89                                         GtkTreePath       *dest_path,
  90                                         GList *targets,
  91                                         GtkTreeViewDropPosition *pos);
  92
  93         /* optional */
  94         GdkAtom  (* get_drag_target)    (RbTreeDragDest   *drag_dest,
  95                                          GtkWidget        *widget,
  96                                          GdkDragContext   *context,
  97                                          GtkTreePath      *dest_path,
  98                                          GtkTargetList    *target_list);
  99 };
 100
 101
 102 GType    rb_tree_drag_source_get_type         (void) G_GNUC_CONST;
 103
 104
 105 /* Returns whether the given row can be dragged */
 106 gboolean rb_tree_drag_source_row_draggable    (RbTreeDragSource *drag_source,
 107                                                GList                  *path_list);
 108
 109 /* Deletes the given row, or returns FALSE if it can't */
 110 gboolean rb_tree_drag_source_drag_data_delete (RbTreeDragSource *drag_source,
 111                                                GList *path_list);
 112
 113 /* Fills in selection_data with type selection_data->target based on the row
 114  * denoted by path, returns TRUE if it does anything
 115  */
 116 gboolean rb_tree_drag_source_drag_data_get (RbTreeDragSource *drag_source,
 117                                             GList                  *path_list,
 118                                             GtkSelectionData       *selection_data);
 119
 120
 121 GType    rb_tree_drag_dest_get_type         (void) G_GNUC_CONST;
 122
 123
 124 gboolean rb_tree_drag_dest_drag_data_received (RbTreeDragDest   *drag_dest,
 125                                                GtkTreePath       *dest,
 126                                                GtkTreeViewDropPosition pos,
 127                                                GtkSelectionData  *selection_data);
 128
 129 gboolean rb_tree_drag_dest_row_drop_possible (RbTreeDragDest   *drag_dest,
 130                                               GtkTreePath       *dest_path,
 131                                               GtkTreeViewDropPosition pos,
 132                                               GtkSelectionData  *selection_data);
 133
 134 gboolean rb_tree_drag_dest_row_drop_position (RbTreeDragDest   *drag_dest,
 135                                               GtkTreePath       *dest_path,
 136                                               GList *targets,
 137                                               GtkTreeViewDropPosition *pos);
 138
 139
 140
 141 void rb_tree_dnd_add_drag_dest_support (GtkTreeView *tree_view,
 142                                     RbTreeDestFlag flags,
 143                                     const GtkTargetEntry *targets,
 144                                     gint n_targets,
 145                                     GdkDragAction actions);
 146
 147 void rb_tree_dnd_add_drag_source_support (GtkTreeView *tree_view,
 148                                     GdkModifierType start_button_mask,
 149                                     const GtkTargetEntry *targets,
 150                                     gint n_targets,
 151                                     GdkDragAction actions);
 152
 153
 154 G_END_DECLS
 155
 156 #endif /* __RB_TREE_DND_H__ */