third_party/WebKit/Source/platform/DragImage.h

   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/FloatSize.h"
  30 #include "platform/geometry/IntSize.h"
  31 #include "platform/graphics/GraphicsTypes.h"
  32 #include "platform/graphics/ImageOrientation.h"
  33 #include "platform/graphics/paint/DisplayItemClient.h"
  34 #include "third_party/skia/include/core/SkBitmap.h"
  35 #include "wtf/Forward.h"
  36
  37 namespace blink {
  38
  39 class FontDescription;
  40 class Image;
  41 class KURL;
  42
  43 class PLATFORM_EXPORT DragImage {
  44 public:
  45     static PassOwnPtr<DragImage> create(Image*,
  46         RespectImageOrientationEnum = DoNotRespectImageOrientation, float deviceScaleFactor = 1,
  47         InterpolationQuality = InterpolationHigh, float opacity = 1,
  48         const FloatSize& imageScale = FloatSize(1, 1));
  49
  50     static PassOwnPtr<DragImage> create(const KURL&, const String& label, const FontDescription& systemFont, float deviceScaleFactor);
  51     ~DragImage();
  52
  53     static FloatSize clampedImageScale(const Image&, const IntSize&, const IntSize& maxSize);
  54
  55     const SkBitmap& bitmap() { return m_bitmap; }
  56     float resolutionScale() const { return m_resolutionScale; }
  57     IntSize size() const { return IntSize(m_bitmap.width(), m_bitmap.height()); }
  58
  59     void scale(float scaleX, float scaleY);
  60
  61 private:
  62     DragImage(const SkBitmap&, float resolutionScale, InterpolationQuality);
  63
  64     DisplayItemClient displayItemClient() const { return toDisplayItemClient(this); }
  65
  66     SkBitmap m_bitmap;
  67     float m_resolutionScale;
  68     InterpolationQuality m_interpolationQuality;
  69 };
  70
  71 }
  72
  73 #endif // DragImage_h