| /* |
| * 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" |
| #include "core/rendering/style/StyleInheritedData.h" |
| |
| namespace blink { |
| |
| struct LayerFragment; |
| typedef Vector<LayerFragment, 1> LayerFragments; |
| class RenderFlowThread; |
| |
| class RenderRegion : public RenderBlockFlow { |
| public: |
| explicit RenderRegion(Element*, RenderFlowThread*); |
| |
| virtual bool isRenderRegion() const OVERRIDE FINAL { return true; } |
| |
| 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; |
| |
| LayoutUnit logicalTopOfFlowThreadContentRect(const LayoutRect&) const; |
| LayoutUnit logicalBottomOfFlowThreadContentRect(const LayoutRect&) const; |
| LayoutUnit logicalTopForFlowThreadContent() const { return logicalTopOfFlowThreadContentRect(flowThreadPortionRect()); }; |
| LayoutUnit logicalBottomForFlowThreadContent() const { return logicalBottomOfFlowThreadContentRect(flowThreadPortionRect()); }; |
| |
| 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; |
| void repaintFlowThreadContentRectangle(const LayoutRect& repaintRect, const LayoutRect& flowThreadPortionRect, |
| const LayoutRect& flowThreadPortionOverflowRect, const LayoutPoint& regionLocation) 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 |