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      1 /*
      2  * Copyright (C) 2007 Apple Inc.  All rights reserved.
      3  *
      4  * Redistribution and use in source and binary forms, with or without
      5  * modification, are permitted provided that the following conditions
      6  * are met:
      7  * 1. Redistributions of source code must retain the above copyright
      8  *    notice, this list of conditions and the following disclaimer.
      9  * 2. Redistributions in binary form must reproduce the above copyright
     10  *    notice, this list of conditions and the following disclaimer in the
     11  *    documentation and/or other materials provided with the distribution.
     12  *
     13  * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
     14  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     15  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     16  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
     17  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
     18  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
     19  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
     20  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
     21  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     22  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     23  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     24  */
     25 
     26 #ifndef DragImage_h
     27 #define DragImage_h
     28 
     29 #include "IntSize.h"
     30 #include "FloatSize.h"
     31 
     32 #if PLATFORM(MAC)
     33 #include <wtf/RetainPtr.h>
     34 #ifdef __OBJC__
     35 @class NSImage;
     36 #else
     37 class NSImage;
     38 #endif
     39 #elif PLATFORM(QT)
     40 QT_BEGIN_NAMESPACE
     41 class QPixmap;
     42 QT_END_NAMESPACE
     43 #elif PLATFORM(WIN)
     44 typedef struct HBITMAP__* HBITMAP;
     45 #elif PLATFORM(WX)
     46 class wxDragImage;
     47 #elif PLATFORM(CHROMIUM)
     48 #include "DragImageRef.h"
     49 #elif PLATFORM(GTK)
     50 typedef struct _GdkPixbuf GdkPixbuf;
     51 #elif PLATFORM(HAIKU)
     52 class BBitmap;
     53 #elif PLATFORM(BREWMP)
     54 typedef struct IImage IImage;
     55 #endif
     56 
     57 //We need to #define YOffset as it needs to be shared with WebKit
     58 #define DragLabelBorderYOffset 2
     59 
     60 namespace WebCore {
     61 
     62     class CachedImage;
     63     class Frame;
     64     class Image;
     65     class KURL;
     66     class Range;
     67     class String;
     68 
     69 #if PLATFORM(MAC)
     70     typedef RetainPtr<NSImage> DragImageRef;
     71 #elif PLATFORM(QT)
     72     typedef QPixmap* DragImageRef;
     73 #elif PLATFORM(WIN)
     74     typedef HBITMAP DragImageRef;
     75 #elif PLATFORM(WX)
     76     typedef wxDragImage* DragImageRef;
     77 #elif PLATFORM(GTK)
     78     typedef GdkPixbuf* DragImageRef;
     79 #elif PLATFORM(HAIKU)
     80     typedef BBitmap* DragImageRef;
     81 #elif PLATFORM(BREWMP)
     82     typedef IImage* DragImageRef;
     83 #elif PLATFORM(ANDROID)
     84     typedef void* DragImageRef;
     85 #endif
     86 
     87     IntSize dragImageSize(DragImageRef);
     88 
     89     //These functions should be memory neutral, eg. if they return a newly allocated image,
     90     //they should release the input image.  As a corollary these methods don't guarantee
     91     //the input image ref will still be valid after they have been called
     92     DragImageRef fitDragImageToMaxSize(DragImageRef image, const IntSize& srcSize, const IntSize& size);
     93     DragImageRef scaleDragImage(DragImageRef, FloatSize scale);
     94     DragImageRef dissolveDragImageToFraction(DragImageRef image, float delta);
     95 
     96     DragImageRef createDragImageFromImage(Image*);
     97     DragImageRef createDragImageForSelection(Frame*);
     98     DragImageRef createDragImageIconForCachedImage(CachedImage*);
     99     void deleteDragImage(DragImageRef);
    100 }
    101 
    102 
    103 #endif //!DragImage_h
    104