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119 lines
4.6 KiB
C++
119 lines
4.6 KiB
C++
/*
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* Copyright (C) 1999 Lars Knoll (knoll@kde.org)
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* (C) 1999 Antti Koivisto (koivisto@kde.org)
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* (C) 2006 Allan Sandfeld Jensen (kde@carewolf.com)
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* (C) 2006 Samuel Weinig (sam.weinig@gmail.com)
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* Copyright (C) 2004, 2005, 2006, 2007, 2009, 2010, 2011 Apple Inc. All rights reserved.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public License
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* along with this library; see the file COPYING.LIB. If not, write to
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* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*
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*/
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#ifndef RenderImage_h
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#define RenderImage_h
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#include "core/rendering/RenderImageResource.h"
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#include "core/rendering/RenderReplaced.h"
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namespace blink {
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class RenderImage : public RenderReplaced {
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public:
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RenderImage(Element*);
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virtual ~RenderImage();
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virtual void destroy() OVERRIDE;
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static RenderImage* createAnonymous(Document*);
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void setImageResource(PassOwnPtr<RenderImageResource>);
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RenderImageResource* imageResource() { return m_imageResource.get(); }
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const RenderImageResource* imageResource() const { return m_imageResource.get(); }
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ImageResource* cachedImage() const { return m_imageResource ? m_imageResource->cachedImage() : 0; }
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bool setImageSizeForAltText(ImageResource* newImage = 0);
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void updateAltText();
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void highQualityRepaintTimerFired(Timer<RenderImage>*);
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void setIsGeneratedContent(bool generated = true) { m_isGeneratedContent = generated; }
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bool isGeneratedContent() const { return m_isGeneratedContent; }
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String altText() const { return m_altText; }
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inline void setImageDevicePixelRatio(float factor) { m_imageDevicePixelRatio = factor; }
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float imageDevicePixelRatio() const { return m_imageDevicePixelRatio; }
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virtual void intrinsicSizeChanged() OVERRIDE
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{
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if (m_imageResource)
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imageChanged(m_imageResource->imagePtr());
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}
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protected:
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virtual bool needsPreferredWidthsRecalculation() const OVERRIDE FINAL;
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virtual void computeIntrinsicRatioInformation(FloatSize& intrinsicSize, double& intrinsicRatio) const OVERRIDE FINAL;
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virtual void imageChanged(WrappedImagePtr, const IntRect* = 0) OVERRIDE;
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void paintIntoRect(GraphicsContext*, const LayoutRect&);
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virtual void paint(PaintInfo&, const LayoutPoint&) OVERRIDE FINAL;
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virtual void layout() OVERRIDE;
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virtual bool updateImageLoadingPriorities() OVERRIDE FINAL;
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private:
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virtual const char* renderName() const OVERRIDE { return "RenderImage"; }
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virtual bool isImage() const OVERRIDE { return true; }
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virtual bool isRenderImage() const OVERRIDE FINAL { return true; }
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virtual void paintReplaced(PaintInfo&, const LayoutPoint&) OVERRIDE;
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virtual bool foregroundIsKnownToBeOpaqueInRect(const LayoutRect& localRect, unsigned maxDepthToTest) const OVERRIDE FINAL;
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virtual bool computeBackgroundIsKnownToBeObscured() OVERRIDE FINAL;
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virtual LayoutUnit minimumReplacedHeight() const OVERRIDE;
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virtual void notifyFinished(Resource*) OVERRIDE FINAL;
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virtual bool nodeAtPoint(const HitTestRequest&, HitTestResult&, const HitTestLocation& locationInContainer, const LayoutPoint& accumulatedOffset, HitTestAction) OVERRIDE FINAL;
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virtual bool boxShadowShouldBeAppliedToBackground(BackgroundBleedAvoidance, InlineFlowBox*) const OVERRIDE FINAL;
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IntSize imageSizeForError(ImageResource*) const;
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void paintInvalidationOrMarkForLayout(bool imageSizeChanged, const IntRect* = 0);
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void updateIntrinsicSizeIfNeeded(const LayoutSize&);
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// Update the size of the image to be rendered. Object-fit may cause this to be different from the CSS box's content rect.
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void updateInnerContentRect();
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void paintAreaElementFocusRing(PaintInfo&);
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// Text to display as long as the image isn't available.
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String m_altText;
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OwnPtr<RenderImageResource> m_imageResource;
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bool m_isGeneratedContent;
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float m_imageDevicePixelRatio;
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friend class RenderImageScaleObserver;
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};
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DEFINE_RENDER_OBJECT_TYPE_CASTS(RenderImage, isRenderImage());
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} // namespace blink
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#endif // RenderImage_h
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