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88 lines
3.5 KiB
C
88 lines
3.5 KiB
C
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/*
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GSDragView - Generic Drag and Drop code.
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Copyright (C) 2004 Free Software Foundation, Inc.
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Author: Fred Kiefer <fredkiefer@gmx.de>
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Date: May 2004
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Based on X11 specific code from:
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Created by: Wim Oudshoorn <woudshoo@xs4all.nl>
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Date: Nov 2001
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Written by: Adam Fedor <fedor@gnu.org>
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Date: Nov 1998
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This file is part of the GNU Objective C User Interface Library.
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public
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License as published by the Free Software Foundation; either
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version 2 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with this library; if not, write to the Free
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Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include <Foundation/NSGeometry.h>
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#include <AppKit/NSDragging.h>
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#include <AppKit/NSView.h>
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@class NSCell;
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@class NSMutableDictionary;
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/*
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used in the operation mask to indicate that the
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user can not change the drag action by
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pressing modifiers.
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*/
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#define NSDragOperationIgnoresModifiers 0xffff
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@interface GSDragView : NSView <NSDraggingInfo>
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{
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NSCell *dragCell; // the graphics that is dragged
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NSPasteboard *dragPasteboard; // the pasteboard with the dragged data
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id destWindow; // NSWindow in this application that is the current target
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NSPoint dragPoint; // in base coordinates, only valid when destWindow != nil
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int dragSequence;
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id dragSource; // the NSObject source of the dragging
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unsigned int dragMask; // Operations supported by the source
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unsigned int operationMask; // user specified operation mask (key modifiers).
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// this is either a mask of type _NSDragOperation,
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// or NSDragOperationIgnoresModifiers, which
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// is defined as 0xffff
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BOOL slideBack; // slide the image back when drag fails?
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/* information used in the drag and drop event loop */
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NSPoint offset; // offset of image w.r.t. cursor
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NSPoint dragPosition; // current drag position in screen coordinates
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NSPoint newPosition; // drag position, not yet processed
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int targetWindowRef; // OS specific current window target of the drag operation
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unsigned int targetMask; // Operations supported by the target, only valid if
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// targetWindowRef isn't 0
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BOOL destExternal; // YES if target and source are in a different application
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BOOL isDragging; // YES if we are currently dragging
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NSMutableDictionary *cursors; // Cache for cursors
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}
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+ (GSDragView*) sharedDragView;
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- (void) dragImage: (NSImage*)anImage
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at: (NSPoint)screenLocation
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offset: (NSSize)initialOffset
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event: (NSEvent*)event
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pasteboard: (NSPasteboard*)pboard
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source: (id)sourceObject
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slideBack: (BOOL)slideFlag;
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- (void) postDragEvent: (NSEvent *)theEvent;
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@end
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