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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 "platform/geometry/IntSize.h"
     30 #include "platform/graphics/ImageOrientation.h"
     31 #include "third_party/skia/include/core/SkBitmap.h"
     32 #include "wtf/Forward.h"
     33 
     34 namespace blink {
     35 
     36 class FontDescription;
     37 class Image;
     38 class KURL;
     39 
     40 class PLATFORM_EXPORT DragImage {
     41 public:
     42     static PassOwnPtr<DragImage> create(Image*, RespectImageOrientationEnum = DoNotRespectImageOrientation, float deviceScaleFactor = 1);
     43     static PassOwnPtr<DragImage> create(const KURL&, const String& label, const FontDescription& systemFont, float deviceScaleFactor);
     44     ~DragImage();
     45 
     46     const SkBitmap& bitmap() { return m_bitmap; }
     47     float resolutionScale() const { return m_resolutionScale; }
     48     IntSize size() const { return IntSize(m_bitmap.width(), m_bitmap.height()); }
     49 
     50     void fitToMaxSize(const IntSize& srcSize, const IntSize& maxSize);
     51     void scale(float scaleX, float scaleY);
     52     void dissolveToFraction(float fraction);
     53 
     54 private:
     55     DragImage(const SkBitmap&, float resolutionScale);
     56 
     57     SkBitmap m_bitmap;
     58     float m_resolutionScale;
     59 };
     60 
     61 }
     62 
     63 #endif // DragImage_h
     64