gtk2/gtk/gtkdroptarget.h
Benjamin Otte a411959c91 droptarget: Redo
This is a huge reorganization of GtkDropTarget. I did not know how to
split this up, so it's unfortunately all one commit.

Highlights:

- Split GtkDropTarget into GtkDropTarget and GtkDropTargetAsync
  GtkDropTarget is the simple one that only works with GTypes and offers
  a synchronous interface.
  GtkDropTargetAsync retains the full old functionality and allows
  handling mime types.

- Drop events are handled differently
  Instead of picking a single drop target and sending all DND events to
  it, every event is sent to every drop target. The first one to handle
  the event gets to call gdk_drop_status(), further handlers do not
  interact with the GdkDrop.
  Of course, for the ultimate GDK_DROP_STARTING event, only the first
  one to accept the drop gets to handle it.
  This allows stacking DND event controllers that aren't necessarily
  interested in handling the event or that might decide later to drop
  it.

- Port all widgets to either of those
  Both have a somewhat changed API due to the new event handling.
  For the ones who should use the sync version, lots of cleanup was
  involved to operate on a sync API.
2020-03-02 03:18:55 +01:00

87 lines
3.5 KiB
C

/*
* Copyright © 2020 Benjamin Otte
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
*
* Authors: Benjamin Otte <otte@gnome.org>
*/
#ifndef __GTK_DROP_TARGET_H__
#define __GTK_DROP_TARGET_H__
#if !defined (__GTK_H_INSIDE__) && !defined (GTK_COMPILATION)
#error "Only <gtk/gtk.h> can be included directly."
#endif
#include <gtk/gtktypes.h>
G_BEGIN_DECLS
typedef struct _GtkDropTarget GtkDropTarget;
#define GTK_TYPE_DROP_TARGET (gtk_drop_target_get_type ())
#define GTK_DROP_TARGET(o) (G_TYPE_CHECK_INSTANCE_CAST ((o), GTK_TYPE_DROP_TARGET, GtkDropTarget))
#define GTK_DROP_TARGET_CLASS(k) (G_TYPE_CHECK_CLASS_CAST ((k), GTK_TYPE_DROP_TARGET, GtkDropTargetClass))
#define GTK_IS_DROP_TARGET(o) (G_TYPE_CHECK_INSTANCE_TYPE ((o), GTK_TYPE_DROP_TARGET))
#define GTK_IS_DROP_TARGET_CLASS(k) (G_TYPE_CHECK_CLASS_TYPE ((k), GTK_TYPE_DROP_TARGET))
#define GTK_DROP_TARGET_GET_CLASS(o) (G_TYPE_INSTANCE_GET_CLASS ((o), GTK_TYPE_DROP_TARGET, GtkDropTargetClass))
typedef struct _GtkDropTargetClass GtkDropTargetClass;
GDK_AVAILABLE_IN_ALL
GType gtk_drop_target_get_type (void) G_GNUC_CONST;
GDK_AVAILABLE_IN_ALL
GtkDropTarget * gtk_drop_target_new (GType type,
GdkDragAction actions);
GDK_AVAILABLE_IN_ALL
void gtk_drop_target_set_gtypes (GtkDropTarget *self,
GType *types,
gsize n_types);
GDK_AVAILABLE_IN_ALL
const GType * gtk_drop_target_get_gtypes (GtkDropTarget *self,
gsize *n_types);
GDK_AVAILABLE_IN_ALL
GdkContentFormats * gtk_drop_target_get_formats (GtkDropTarget *self);
GDK_AVAILABLE_IN_ALL
void gtk_drop_target_set_actions (GtkDropTarget *self,
GdkDragAction actions);
GDK_AVAILABLE_IN_ALL
GdkDragAction gtk_drop_target_get_actions (GtkDropTarget *self);
GDK_AVAILABLE_IN_ALL
void gtk_drop_target_set_preload (GtkDropTarget *self,
gboolean preload);
GDK_AVAILABLE_IN_ALL
gboolean gtk_drop_target_get_preload (GtkDropTarget *self);
GDK_AVAILABLE_IN_ALL
GdkDrop * gtk_drop_target_get_drop (GtkDropTarget *self);
GDK_AVAILABLE_IN_ALL
const GValue * gtk_drop_target_get_value (GtkDropTarget *self);
GDK_AVAILABLE_IN_ALL
void gtk_drop_target_reject (GtkDropTarget *self);
G_END_DECLS
#endif /* __GTK_DROP_TARGET_H__ */