WebCore/ImageDocument.h

   1 /*
   2  * Copyright (C) 2006, 2007, 2008 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  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
  20  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  21  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  22  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  23  */
  24
  25 #ifndef ImageDocument_h
  26 #define ImageDocument_h
  27
  28 #include "HTMLDocument.h"
  29
  30 namespace WebCore {
  31
  32 class ImageDocumentElement;
  33
  34 class ImageDocument : public HTMLDocument {
  35 public:
  36     static PassRefPtr<ImageDocument> create(Frame* frame)
  37     {
  38         return new ImageDocument(frame);
  39     }
  40
  41     CachedImage* cachedImage();
  42     ImageDocumentElement* imageElement() const { return m_imageElement; }
  43     void disconnectImageElement() { m_imageElement = 0; }
  44
  45     void windowSizeChanged();
  46     void imageChanged();
  47     void imageClicked(int x, int y);
  48
  49 private:
  50     ImageDocument(Frame*);
  51
  52     virtual Tokenizer* createTokenizer();
  53     virtual bool isImageDocument() const { return true; }
  54
  55     void createDocumentStructure();
  56     void resizeImageToFit();
  57     void restoreImageSize();
  58     bool imageFitsInWindow() const;
  59     bool shouldShrinkToFit() const;
  60     float scale() const;
  61
  62     ImageDocumentElement* m_imageElement;
  63
  64     // Whether enough of the image has been loaded to determine its size
  65     bool m_imageSizeIsKnown;
  66
  67     // Whether the image is shrunk to fit or not
  68     bool m_didShrinkImage;
  69
  70     // Whether the image should be shrunk or not
  71     bool m_shouldShrinkImage;
  72 };
  73
  74 }
  75
  76 #endif // ImageDocument_h