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/*
* Copyright (C) 2006, 2007, 2008, 2009 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef ImageDocument_h
#define ImageDocument_h
#include "core/html/HTMLDivElement.h"
#include "core/html/HTMLDocument.h"
#include "core/html/HTMLImageElement.h"
#include "wtf/RefPtr.h"
namespace blink {
class ImageResource;
class CORE_EXPORT ImageDocument final : public HTMLDocument {
public:
static ImageDocument* create(
const DocumentInit& initializer = DocumentInit()) {
return new ImageDocument(initializer);
}
ImageResourceContent* cachedImage();
// TODO(hiroshige): Remove this.
ImageResource* cachedImageResourceDeprecated();
HTMLImageElement* imageElement() const { return m_imageElement.get(); }
void windowSizeChanged();
void imageUpdated();
void imageClicked(int x, int y);
void imageLoaded();
void updateImageStyle();
bool shouldShrinkToFit() const;
DECLARE_VIRTUAL_TRACE();
private:
explicit ImageDocument(const DocumentInit&);
DocumentParser* createParser() override;
void createDocumentStructure();
// Calculates how large the div needs to be to properly center the image.
int calculateDivWidth();
// These methods are for m_shrinkToFitMode == Desktop.
void resizeImageToFit();
void restoreImageSize();
bool imageFitsInWindow() const;
// Calculates the image size multiplier that's needed to fit the image to
// the window, taking into account page zoom and device scale.
float scale() const;
Member<HTMLDivElement> m_divElement;
Member<HTMLImageElement> m_imageElement;
// Whether enough of the image has been loaded to determine its size
bool m_imageSizeIsKnown;
// Whether the image is shrunk to fit or not
bool m_didShrinkImage;
// Whether the image should be shrunk or not
bool m_shouldShrinkImage;
// Whether the image has finished loading or not
bool m_imageIsLoaded;
// Size of the checkerboard background tiles
int m_styleCheckerSize;
// Desktop: State of the mouse cursor in the image style
enum MouseCursorMode { Default, ZoomIn, ZoomOut };
MouseCursorMode m_styleMouseCursorMode;
enum ShrinkToFitMode { Viewport, Desktop };
ShrinkToFitMode m_shrinkToFitMode;
};
DEFINE_DOCUMENT_TYPE_CASTS(ImageDocument);
} // namespace blink
#endif // ImageDocument_h
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