gtk2/gdk/win32/gdkwin32dnd-private.h
Руслан Ижбулатов 997e8c1ae1 GDK W32: Adapt to dest_surface removal, misc changes
* There's no GdkDragContext->dest_surface anymore.
  Add dest_window field to GdkWin32DragContext,
  and use that instead.
* Remove unused function prototypes
* Add more comments
* Rename variables and fields from 'window' to 'surface'
  where appropriate
* Fix header indentation a bit
* Try to ensure that uninitialized/unknown handle variables
  and fields are set to INVALID_HANDLE_VALUE instead of NULL,
  as there may be cases where NULL is a valid handle value.
2018-06-18 23:49:53 +02:00

133 lines
5.4 KiB
C

/* GDK - The GIMP Drawing Kit
* Copyright (C) 2010 Red Hat, Inc.
*
* 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 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/>.
*/
#ifndef __GDK_WIN32_DND_PRIVATE_H__
#define __GDK_WIN32_DND_PRIVATE_H__
#if !defined (__GDKWIN32_H_INSIDE__) && !defined (GDK_COMPILATION)
#error "Only <gdk/gdkwin32.h> can be included directly."
#endif
#include <gdk/gdk.h>
G_BEGIN_DECLS
typedef struct _GdkWin32DragContextUtilityData GdkWin32DragContextUtilityData;
/* This structure is deliberately designed to be
* copyable with memcpy(), i.e. no pointers inside.
*/
struct _GdkWin32DragContextUtilityData
{
gint last_x; /* Coordinates from last event, in GDK space */
gint last_y;
DWORD last_key_state; /* Key state from last event */
GdkWin32DndState state;
};
struct _GdkWin32DragContext
{
GdkDragContext drag;
/* The drag protocol being used */
GdkDragProtocol protocol;
/* The surface used for grabs.
* Usually the same as GdkDragContext->source_surface
*/
GdkSurface *grab_surface;
/* The window currently under cursor.
* Will be INVALID_HANDLE_VALUE (not NULL!) if it is not known
*/
HWND dest_window;
/* The surface that we move along with the cursor to indicate
* what exactly is being dragged.
*/
GdkSurface *drag_surface;
GdkCursor *cursor;
GdkSeat *grab_seat;
/* Used to keep track of current drag action, and
* emit an "action-changed" signal whenever it changes.
* In the end the actual action is decided on the basis of
* the last information we receive from the drop site, this
* field is not used for that purpose.
*/
GdkDragAction current_action;
GdkWin32DragContextUtilityData util_data;
guint scale; /* Temporarily caches the HiDPI scale */
gint hot_x; /* Hotspot offset from the top-left of the drag-window, scaled (can be added to GDK space coordinates) */
gint hot_y;
gint start_x; /* Coordinates of the drag start, in GDK space */
gint start_y;
guint drag_status : 4; /* Current status of drag */
guint drop_failed : 1; /* Whether the drop was unsuccessful */
guint handle_events : 1; /* Whether handle_event() should do anything */
};
struct _GdkWin32DragContextClass
{
GdkDragContextClass parent_class;
};
gpointer _gdk_win32_dnd_thread_main (gpointer data);
GdkDragContext *_gdk_win32_find_drag_for_dest_window (HWND dest_window);
GdkDrop *_gdk_win32_get_drop_for_dest_surface (GdkSurface *dest);
gboolean _gdk_win32_local_drop_target_will_emit_motion (GdkDrop *drop,
gint x_root,
gint y_root,
DWORD grfKeyState);
void _gdk_win32_local_drop_target_dragenter (GdkDragContext *drag,
GdkSurface *dest_surface,
gint x_root,
gint y_root,
DWORD grfKeyState,
guint32 time_,
GdkDragAction *actions);
void _gdk_win32_local_drop_target_dragover (GdkDrop *drop,
GdkDragContext *drag,
gint x_root,
gint y_root,
DWORD grfKeyState,
guint32 time_,
GdkDragAction *actions);
void _gdk_win32_local_drop_target_dragleave (GdkDrop *drop,
guint32 time_);
void _gdk_win32_local_drop_target_drop (GdkDrop *drop,
GdkDragContext *drag,
guint32 time_,
GdkDragAction *actions);
void _gdk_win32_local_drag_give_feedback (GdkDragContext *drag,
GdkDragAction actions);
void _gdk_win32_local_drag_context_drop_response (GdkDragContext *drag,
GdkDragAction action);
G_END_DECLS
#endif /* __GDK_WIN32_DND_PRIVATE_H__ */