| /* |
| * Copyright (C) 2003, 2004, 2005, 2006, 2007 Apple Inc. All rights reserved. |
| * |
| * This library is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Library General Public |
| * License as published by the Free Software Foundation; either |
| * version 2 of the License, or (at your option) any later version. |
| * |
| * This library is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * Library General Public License for more details. |
| * |
| * You should have received a copy of the GNU Library General Public License |
| * along with this library; see the file COPYING.LIB. If not, write to |
| * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
| * Boston, MA 02110-1301, USA. |
| * |
| */ |
| |
| #ifndef InlineFlowBox_h |
| #define InlineFlowBox_h |
| |
| #include "InlineBox.h" |
| #include "RenderOverflow.h" |
| |
| namespace WebCore { |
| |
| class HitTestRequest; |
| class HitTestResult; |
| class RenderLineBoxList; |
| |
| class InlineFlowBox : public InlineBox { |
| public: |
| InlineFlowBox(RenderObject* obj) |
| : InlineBox(obj) |
| , m_firstChild(0) |
| , m_lastChild(0) |
| , m_prevLineBox(0) |
| , m_nextLineBox(0) |
| , m_includeLeftEdge(false) |
| , m_includeRightEdge(false) |
| #ifndef NDEBUG |
| , m_hasBadChildList(false) |
| #endif |
| { |
| // Internet Explorer and Firefox always create a marker for list items, even when the list-style-type is none. We do not make a marker |
| // in the list-style-type: none case, since it is wasteful to do so. However, in order to match other browsers we have to pretend like |
| // an invisible marker exists. The side effect of having an invisible marker is that the quirks mode behavior of shrinking lines with no |
| // text children must not apply. This change also means that gaps will exist between image bullet list items. Even when the list bullet |
| // is an image, the line is still considered to be immune from the quirk. |
| m_hasTextChildren = obj->style()->display() == LIST_ITEM; |
| } |
| |
| #ifndef NDEBUG |
| virtual ~InlineFlowBox(); |
| #endif |
| |
| InlineFlowBox* prevLineBox() const { return m_prevLineBox; } |
| InlineFlowBox* nextLineBox() const { return m_nextLineBox; } |
| void setNextLineBox(InlineFlowBox* n) { m_nextLineBox = n; } |
| void setPreviousLineBox(InlineFlowBox* p) { m_prevLineBox = p; } |
| |
| InlineBox* firstChild() const { checkConsistency(); return m_firstChild; } |
| InlineBox* lastChild() const { checkConsistency(); return m_lastChild; } |
| |
| virtual bool isLeaf() const { return false; } |
| |
| InlineBox* firstLeafChild() const; |
| InlineBox* lastLeafChild() const; |
| |
| virtual void setConstructed() |
| { |
| InlineBox::setConstructed(); |
| if (firstChild()) |
| firstChild()->setConstructed(); |
| } |
| |
| void addToLine(InlineBox* child); |
| virtual void deleteLine(RenderArena*); |
| virtual void extractLine(); |
| virtual void attachLine(); |
| virtual void adjustPosition(int dx, int dy); |
| |
| virtual void extractLineBoxFromRenderObject(); |
| virtual void attachLineBoxToRenderObject(); |
| virtual void removeLineBoxFromRenderObject(); |
| |
| virtual void clearTruncation(); |
| |
| virtual void paintBoxDecorations(RenderObject::PaintInfo&, int tx, int ty); |
| virtual void paintMask(RenderObject::PaintInfo&, int tx, int ty); |
| void paintFillLayers(const RenderObject::PaintInfo&, const Color&, const FillLayer*, int tx, int ty, int w, int h, CompositeOperator = CompositeSourceOver); |
| void paintFillLayer(const RenderObject::PaintInfo&, const Color&, const FillLayer*, int tx, int ty, int w, int h, CompositeOperator = CompositeSourceOver); |
| void paintBoxShadow(GraphicsContext*, RenderStyle*, ShadowStyle, int tx, int ty, int w, int h); |
| virtual void paintTextDecorations(RenderObject::PaintInfo&, int tx, int ty, bool paintedChildren = false); |
| virtual void paint(RenderObject::PaintInfo&, int tx, int ty); |
| virtual bool nodeAtPoint(const HitTestRequest&, HitTestResult&, int x, int y, int tx, int ty); |
| |
| virtual RenderLineBoxList* rendererLineBoxes() const; |
| |
| int marginBorderPaddingLeft() const { return marginLeft() + borderLeft() + paddingLeft(); } |
| int marginBorderPaddingRight() const { return marginRight() + borderRight() + paddingRight(); } |
| int marginLeft() const { if (includeLeftEdge()) return boxModelObject()->marginLeft(); return 0; } |
| int marginRight() const { if (includeRightEdge()) return boxModelObject()->marginRight(); return 0; } |
| int borderLeft() const { if (includeLeftEdge()) return renderer()->style()->borderLeftWidth(); return 0; } |
| int borderRight() const { if (includeRightEdge()) return renderer()->style()->borderRightWidth(); return 0; } |
| int borderTop() const { return renderer()->style()->borderTopWidth(); } |
| int borderBottom() const { return renderer()->style()->borderBottomWidth(); } |
| int paddingLeft() const { if (includeLeftEdge()) return boxModelObject()->paddingLeft(); return 0; } |
| int paddingRight() const { if (includeRightEdge()) return boxModelObject()->paddingRight(); return 0; } |
| int paddingTop() const { return boxModelObject()->paddingTop(); } |
| int paddingBottom() const { return boxModelObject()->paddingBottom(); } |
| |
| bool includeLeftEdge() const { return m_includeLeftEdge; } |
| bool includeRightEdge() const { return m_includeRightEdge; } |
| void setEdges(bool includeLeft, bool includeRight) |
| { |
| m_includeLeftEdge = includeLeft; |
| m_includeRightEdge = includeRight; |
| } |
| |
| // Helper functions used during line construction and placement. |
| void determineSpacingForFlowBoxes(bool lastLine, RenderObject* endObject); |
| int getFlowSpacingWidth(); |
| bool onEndChain(RenderObject* endObject); |
| virtual int placeBoxesHorizontally(int x, bool& needsWordSpacing); |
| void computeLogicalBoxHeights(int& maxPositionTop, int& maxPositionBottom, |
| int& maxAscent, int& maxDescent, bool strictMode); |
| void adjustMaxAscentAndDescent(int& maxAscent, int& maxDescent, |
| int maxPositionTop, int maxPositionBottom); |
| void placeBoxesVertically(int y, int maxHeight, int maxAscent, bool strictMode, int& lineTop, int& lineBottom); |
| void computeVerticalOverflow(int lineTop, int lineBottom, bool strictMode); |
| |
| void removeChild(InlineBox* child); |
| |
| virtual RenderObject::SelectionState selectionState(); |
| |
| virtual bool canAccommodateEllipsis(bool ltr, int blockEdge, int ellipsisWidth); |
| virtual int placeEllipsisBox(bool ltr, int blockLeftEdge, int blockRightEdge, int ellipsisWidth, bool&); |
| |
| bool hasTextChildren() const { return m_hasTextChildren; } |
| |
| void checkConsistency() const; |
| void setHasBadChildList(); |
| |
| int topVisibleOverflow() const { return std::min(topLayoutOverflow(), topVisualOverflow()); } |
| int bottomVisibleOverflow() const { return std::max(bottomLayoutOverflow(), bottomVisualOverflow()); } |
| int leftVisibleOverflow() const { return std::min(leftLayoutOverflow(), leftVisualOverflow()); } |
| int rightVisibleOverflow() const { return std::max(rightLayoutOverflow(), rightVisualOverflow()); } |
| IntRect visibleOverflowRect() const { return m_overflow ? m_overflow->visibleOverflowRect() : IntRect(m_x, m_y, m_width, height()); } |
| |
| int topLayoutOverflow() const { return m_overflow ? m_overflow->topLayoutOverflow() : m_y; } |
| int bottomLayoutOverflow() const { return m_overflow ? m_overflow->bottomLayoutOverflow() : m_y + height(); } |
| int leftLayoutOverflow() const { return m_overflow ? m_overflow->leftLayoutOverflow() : m_x; } |
| int rightLayoutOverflow() const { return m_overflow ? m_overflow->rightLayoutOverflow() : m_x + m_width; } |
| IntRect layoutOverflowRect() const { return m_overflow ? m_overflow->layoutOverflowRect() : IntRect(m_x, m_y, m_width, height()); } |
| |
| int topVisualOverflow() const { return m_overflow ? m_overflow->topVisualOverflow() : m_y; } |
| int bottomVisualOverflow() const { return m_overflow ? m_overflow->bottomVisualOverflow() : m_y + height(); } |
| int leftVisualOverflow() const { return m_overflow ? m_overflow->leftVisualOverflow() : m_x; } |
| int rightVisualOverflow() const { return m_overflow ? m_overflow->rightVisualOverflow() : m_x + m_width; } |
| IntRect visualOverflowRect() const { return m_overflow ? m_overflow->visualOverflowRect() : IntRect(m_x, m_y, m_width, height()); } |
| |
| void setHorizontalOverflowPositions(int leftLayoutOverflow, int rightLayoutOverflow, int leftVisualOverflow, int rightVisualOverflow); |
| void setVerticalOverflowPositions(int topLayoutOverflow, int bottomLayoutOverflow, int topVisualOverflow, int bottomVisualOverflow, int boxHeight); |
| |
| protected: |
| OwnPtr<RenderOverflow> m_overflow; |
| |
| virtual bool isInlineFlowBox() const { return true; } |
| |
| InlineBox* m_firstChild; |
| InlineBox* m_lastChild; |
| |
| InlineFlowBox* m_prevLineBox; // The previous box that also uses our RenderObject |
| InlineFlowBox* m_nextLineBox; // The next box that also uses our RenderObject |
| |
| bool m_includeLeftEdge : 1; |
| bool m_includeRightEdge : 1; |
| bool m_hasTextChildren : 1; |
| |
| #ifndef NDEBUG |
| bool m_hasBadChildList; |
| #endif |
| }; |
| |
| inline void InlineFlowBox::setHorizontalOverflowPositions(int leftLayoutOverflow, int rightLayoutOverflow, int leftVisualOverflow, int rightVisualOverflow) |
| { |
| if (!m_overflow) { |
| if (leftLayoutOverflow == m_x && rightLayoutOverflow == m_x + m_width && leftVisualOverflow == m_x && rightVisualOverflow == m_x + m_width) |
| return; |
| m_overflow.set(new RenderOverflow(IntRect(m_x, m_y, m_width, m_renderer->style(m_firstLine)->font().height()))); |
| } |
| |
| m_overflow->setLeftLayoutOverflow(leftLayoutOverflow); |
| m_overflow->setRightLayoutOverflow(rightLayoutOverflow); |
| m_overflow->setLeftVisualOverflow(leftVisualOverflow); |
| m_overflow->setRightVisualOverflow(rightVisualOverflow); |
| } |
| |
| inline void InlineFlowBox::setVerticalOverflowPositions(int topLayoutOverflow, int bottomLayoutOverflow, int topVisualOverflow, int bottomVisualOverflow, int boxHeight) |
| { |
| if (!m_overflow) { |
| if (topLayoutOverflow == m_y && bottomLayoutOverflow == m_y + boxHeight && topVisualOverflow == m_y && bottomVisualOverflow == m_y + boxHeight) |
| return; |
| m_overflow.set(new RenderOverflow(IntRect(m_x, m_y, m_width, boxHeight))); |
| } |
| |
| m_overflow->setTopLayoutOverflow(topLayoutOverflow); |
| m_overflow->setBottomLayoutOverflow(bottomLayoutOverflow); |
| m_overflow->setTopVisualOverflow(topVisualOverflow); |
| m_overflow->setBottomVisualOverflow(bottomVisualOverflow); |
| } |
| |
| #ifdef NDEBUG |
| inline void InlineFlowBox::checkConsistency() const |
| { |
| } |
| #endif |
| |
| inline void InlineFlowBox::setHasBadChildList() |
| { |
| #ifndef NDEBUG |
| m_hasBadChildList = true; |
| #endif |
| } |
| |
| } // namespace WebCore |
| |
| #ifndef NDEBUG |
| // Outside the WebCore namespace for ease of invocation from gdb. |
| void showTree(const WebCore::InlineFlowBox*); |
| #endif |
| |
| #endif // InlineFlowBox_h |