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/*
* Copyright (C) 2011 Adobe Systems Incorporated. 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 THE COPYRIGHT HOLDER “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 THE COPYRIGHT HOLDER BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
* OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* 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 RenderRegion_h
#define RenderRegion_h
#include "core/rendering/RenderBlockFlow.h"
namespace blink {
class RenderFlowThread;
class RenderRegion : public RenderBlockFlow {
public:
explicit RenderRegion(Element*, RenderFlowThread*);
virtual bool isOfType(RenderObjectType type) const override { return type == RenderObjectRenderRegion || RenderBlockFlow::isOfType(type); }
void setFlowThreadPortionRect(const LayoutRect& rect) { m_flowThreadPortionRect = rect; }
LayoutRect flowThreadPortionRect() const { return m_flowThreadPortionRect; }
LayoutRect flowThreadPortionOverflowRect() const;
RenderFlowThread* flowThread() const { return m_flowThread; }
// Valid regions do not create circular dependencies with other flows.
bool isValid() const { return m_isValid; }
void setIsValid(bool valid) { m_isValid = valid; }
bool isFirstRegion() const;
bool isLastRegion() const;
// These methods represent the width and height of a "page" and for a RenderRegion they are just
// the content width and content height of a region. For RenderMultiColumnSets, however, they
// will be the width and height of a single column or page in the set.
virtual LayoutUnit pageLogicalWidth() const;
virtual LayoutUnit pageLogicalHeight() const;
virtual bool canHaveChildren() const override final { return false; }
virtual bool canHaveGeneratedChildren() const override final { return true; }
virtual const char* renderName() const override { return "RenderRegion"; }
protected:
virtual void computeIntrinsicLogicalWidths(LayoutUnit& minLogicalWidth, LayoutUnit& maxLogicalWidth) const override final;
LayoutRect overflowRectForFlowThreadPortion(const LayoutRect& flowThreadPortionRect, bool isFirstPortion, bool isLastPortion) const;
private:
virtual void layoutBlock(bool relayoutChildren) override final;
protected:
RenderFlowThread* m_flowThread;
private:
LayoutRect m_flowThreadPortionRect;
bool m_isValid : 1;
};
DEFINE_RENDER_OBJECT_TYPE_CASTS(RenderRegion, isRenderRegion());
} // namespace blink
#endif // RenderRegion_h
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