diff options
Diffstat (limited to 'khtml/rendering/render_block.h')
-rw-r--r-- | khtml/rendering/render_block.h | 378 |
1 files changed, 0 insertions, 378 deletions
diff --git a/khtml/rendering/render_block.h b/khtml/rendering/render_block.h deleted file mode 100644 index 2b0e49398..000000000 --- a/khtml/rendering/render_block.h +++ /dev/null @@ -1,378 +0,0 @@ -/* - * This file is part of the render object implementation for KHTML. - * - * Copyright (C) 1999-2003 Lars Knoll (knoll@kde.org) - * (C) 1999-2003 Antti Koivisto (koivisto@kde.org) - * (C) 2002-2003 Dirk Mueller (mueller@kde.org) - * (C) 2003 Apple Computer, Inc. - * - * 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 RENDER_BLOCK_H -#define RENDER_BLOCK_H - -#include <tqptrlist.h> - -#include "render_flow.h" - -namespace khtml { - -class RenderBlock : public RenderFlow -{ -public: - RenderBlock(DOM::NodeImpl* node); - virtual ~RenderBlock(); - - virtual const char *renderName() const; - - virtual bool isRenderBlock() const { return true; } - virtual bool isBlockFlow() const { return !isInline() && !isTable(); } - virtual bool isInlineFlow() const { return isInline() && !isReplaced(); } - virtual bool isInlineBlockOrInlineTable() const { return isInline() && isReplaced(); } - - virtual bool childrenInline() const { return m_childrenInline; } - virtual void setChildrenInline(bool b) { m_childrenInline = b; } - void makeChildrenNonInline(RenderObject* insertionPoint = 0); - - void makePageBreakAvoidBlocks(); - - // The height (and width) of a block when you include overflow spillage out of the bottom - // of the block (e.g., a <div style="height:25px"> that has a 100px tall image inside - // it would have an overflow height of borderTop() + paddingTop() + 100px. - virtual int overflowHeight() const { return m_overflowHeight; } - virtual int overflowWidth() const { return m_overflowWidth; } - virtual int overflowLeft() const { return m_overflowLeft; } - virtual int overflowTop() const { return m_overflowTop; } - virtual void setOverflowHeight(int h) { m_overflowHeight = h; } - virtual void setOverflowWidth(int w) { m_overflowWidth = w; } - virtual void setOverflowLeft(int l) { m_overflowLeft = l; } - virtual void setOverflowTop(int t) { m_overflowTop = t; } - - virtual bool isSelfCollapsingBlock() const; - virtual bool isTopMarginQuirk() const { return m_topMarginQuirk; } - virtual bool isBottomMarginQuirk() const { return m_bottomMarginQuirk; } - - virtual short maxTopMargin(bool positive) const { - if (positive) - return m_maxTopPosMargin; - else - return m_maxTopNegMargin; - } - virtual short maxBottomMargin(bool positive) const { - if (positive) - return m_maxBottomPosMargin; - else - return m_maxBottomNegMargin; - } - - void initMaxMarginValues() { - if (m_marginTop >= 0) - m_maxTopPosMargin = m_marginTop; - else - m_maxTopNegMargin = -m_marginTop; - if (m_marginBottom >= 0) - m_maxBottomPosMargin = m_marginBottom; - else - m_maxBottomNegMargin = -m_marginBottom; - } - - virtual void addChildToFlow(RenderObject* newChild, RenderObject* beforeChild); - virtual void removeChild(RenderObject *oldChild); - - virtual void setStyle(RenderStyle* _style); - virtual void attach(); - void updateFirstLetter(); - - virtual void layout(); - void layoutBlock( bool relayoutChildren ); - void layoutBlockChildren( bool relayoutChildren ); - void layoutInlineChildren( bool relayoutChildren, int breakBeforeLine = 0); - - void layoutPositionedObjects( bool relayoutChildren ); - void insertPositionedObject(RenderObject *o); - void removePositionedObject(RenderObject *o); - - // Called to lay out the legend for a fieldset. - virtual RenderObject* layoutLegend(bool /*relayoutChildren*/) { return 0; }; - - // the implementation of the following functions is in bidi.cpp - void bidiReorderLine(const BidiIterator &start, const BidiIterator &end, BidiState &bidi ); - BidiIterator findNextLineBreak(BidiIterator &start, BidiState &info ); - InlineFlowBox* constructLine(const BidiIterator& start, const BidiIterator& end); - InlineFlowBox* createLineBoxes(RenderObject* obj); - void computeHorizontalPositionsForLine(InlineFlowBox* lineBox, BidiState &bidi); - void computeVerticalPositionsForLine(InlineFlowBox* lineBox); - bool clearLineOfPageBreaks(InlineFlowBox* lineBox); - void checkLinesForOverflow(); - void deleteEllipsisLineBoxes(); - void checkLinesForTextOverflow(); - // end bidi.cpp functions - - virtual void paint(PaintInfo& i, int tx, int ty); - void paintObject(PaintInfo& i, int tx, int ty, bool paintOutline = true); - void paintFloats(PaintInfo& i, int _tx, int _ty, bool paintSelection = false); - - void insertFloatingObject(RenderObject *o); - void removeFloatingObject(RenderObject *o); - - // called from lineWidth, to position the floats added in the last line. - void positionNewFloats(); - void clearFloats(); - int getClearDelta(RenderObject *child); - virtual void markAllDescendantsWithFloatsForLayout(RenderObject* floatToRemove = 0); - - // FIXME: containsFloats() should not return true if the floating objects list - // is empty. However, layoutInlineChildren() relies on the current behavior. - // http://bugzilla.opendarwin.org/show_bug.cgi?id=7395#c3 - virtual bool hasFloats() const { return m_floatingObjects!=0; } - virtual bool containsFloat(RenderObject* o) const; - - virtual bool hasOverhangingFloats() const { return floatBottom() > m_height; } - void addOverHangingFloats( RenderBlock *block, int xoffset, int yoffset, bool child ); - - int nearestFloatBottom(int height) const; - int floatBottom() const; - inline int leftBottom(); - inline int rightBottom(); - - virtual unsigned short lineWidth(int y, bool *canClearLine = 0) const; - virtual int lowestPosition(bool includeOverflowInterior=true, bool includeSelf=true) const; - virtual int rightmostPosition(bool includeOverflowInterior=true, bool includeSelf=true) const; - virtual int leftmostPosition(bool includeOverflowInterior=true, bool includeSelf=true) const; - virtual int highestPosition(bool includeOverflowInterior, bool includeSelf) const; - int lowestAbsolutePosition() const; - int leftmostAbsolutePosition() const; - int rightmostAbsolutePosition() const; - int highestAbsolutePosition() const; - - int rightOffset() const; - int rightRelOffset(int y, int fixedOffset, bool applyTextIndent=true, int *heightRemaining = 0, bool *canClearLine = 0) const; - int rightOffset(int y, bool *canClearLine = 0) const { return rightRelOffset(y, rightOffset(), true, 0, canClearLine); } - - int leftOffset() const; - int leftRelOffset(int y, int fixedOffset, bool applyTextIndent=true, int *heightRemaining = 0, bool *canClearLine = 0) const; - int leftOffset(int y, bool *canClearLine = 0) const { return leftRelOffset(y, leftOffset(), true, 0, canClearLine); } - - virtual bool nodeAtPoint(NodeInfo& info, int x, int y, int _tx, int _ty, HitTestAction hitTestAction = HitTestAll, bool inside=false); - - bool isPointInScrollbar(int x, int y, int tx, int ty); - - virtual void calcMinMaxWidth(); - void calcInlineMinMaxWidth(); - void calcBlockMinMaxWidth(); - - virtual void close(); - - virtual int getBaselineOfFirstLineBox(); - virtual InlineFlowBox* getFirstLineBox(); - - RootInlineBox* firstRootBox() { return static_cast<RootInlineBox*>(m_firstLineBox); } - RootInlineBox* lastRootBox() { return static_cast<RootInlineBox*>(m_lastLineBox); } - - bool inRootBlockContext() const; - -#ifdef ENABLE_DUMP - virtual void printTree(int indent=0) const; - virtual void dump(TQTextStream &stream, const TQString &ind) const; -#endif - -protected: - void newLine(); - -protected: - struct FloatingObject { - enum Type { - FloatLeft, - FloatRight - }; - - FloatingObject(Type _type) { - node = 0; - startY = 0; - endY = 0; - type = _type; - left = 0; - width = 0; - noPaint = false; - crossedLayer = false; - - } - RenderObject* node; - int startY; - int endY; - short left; - short width; - Type type : 1; // left or right aligned - bool noPaint : 1; - bool crossedLayer : 1; // lock noPaint flag - }; - - // The following helper functions and structs are used by layoutBlockChildren. - class CompactInfo { - // A compact child that needs to be collapsed into the margin of the following block. - RenderObject* m_compact; - - // The block with the open margin that the compact child is going to place itself within. - RenderObject* m_block; - bool m_treatAsBlock : 1; - - public: - RenderObject* compact() const { return m_compact; } - RenderObject* block() const { return m_block; } - void setTreatAsBlock(bool b) { m_treatAsBlock = b; } - bool treatAsBlock() const { return m_treatAsBlock; } - bool matches(RenderObject* child) const { return m_compact && m_block == child; } - - void clear() { set(0, 0); } - void set(RenderObject* c, RenderObject* b) { m_compact = c; m_block = b; } - - CompactInfo() { clear(); } - }; - - class MarginInfo { - // Collapsing flags for whether we can collapse our margins with our children's margins. - bool m_canCollapseWithChildren : 1; - bool m_canCollapseTopWithChildren : 1; - bool m_canCollapseBottomWithChildren : 1; - - // Whether or not we are a quirky container, i.e., do we collapse away top and bottom - // margins in our container. Table cells and the body are the common examples. We - // also have a custom style property for Safari RSS to deal with TypePad blog articles. - bool m_quirkContainer : 1; - - // This flag tracks whether we are still looking at child margins that can all collapse together at the beginning of a block. - // They may or may not collapse with the top margin of the block (|m_canCollapseTopWithChildren| tells us that), but they will - // always be collapsing with one another. This variable can remain set to true through multiple iterations - // as long as we keep encountering self-collapsing blocks. - bool m_atTopOfBlock : 1; - - // This flag is set when we know we're examining bottom margins and we know we're at the bottom of the block. - bool m_atBottomOfBlock : 1; - - // If our last normal flow child was a self-collapsing block that cleared a float, - // we track it in this variable. - bool m_selfCollapsingBlockClearedFloat : 1; - - // These variables are used to detect quirky margins that we need to collapse away (in table cells - // and in the body element). - bool m_topQuirk : 1; - bool m_bottomQuirk : 1; - bool m_determinedTopQuirk : 1; - - // These flags track the previous maximal positive and negative margins. - int m_posMargin; - int m_negMargin; - - public: - MarginInfo(RenderBlock* b, int top, int bottom); - - void setAtTopOfBlock(bool b) { m_atTopOfBlock = b; } - void setAtBottomOfBlock(bool b) { m_atBottomOfBlock = b; } - void clearMargin() { m_posMargin = m_negMargin = 0; } - void setSelfCollapsingBlockClearedFloat(bool b) { m_selfCollapsingBlockClearedFloat = b; } - void setTopQuirk(bool b) { m_topQuirk = b; } - void setBottomQuirk(bool b) { m_bottomQuirk = b; } - void setDeterminedTopQuirk(bool b) { m_determinedTopQuirk = b; } - void setPosMargin(int p) { m_posMargin = p; } - void setNegMargin(int n) { m_negMargin = n; } - void setPosMarginIfLarger(int p) { if (p > m_posMargin) m_posMargin = p; } - void setNegMarginIfLarger(int n) { if (n > m_negMargin) m_negMargin = n; } - - void setMargin(int p, int n) { m_posMargin = p; m_negMargin = n; } - - bool atTopOfBlock() const { return m_atTopOfBlock; } - bool canCollapseWithTop() const { return m_atTopOfBlock && m_canCollapseTopWithChildren; } - bool canCollapseWithBottom() const { return m_atBottomOfBlock && m_canCollapseBottomWithChildren; } - bool canCollapseTopWithChildren() const { return m_canCollapseTopWithChildren; } - bool canCollapseBottomWithChildren() const { return m_canCollapseBottomWithChildren; } - bool selfCollapsingBlockClearedFloat() const { return m_selfCollapsingBlockClearedFloat; } - bool quirkContainer() const { return m_quirkContainer; } - bool determinedTopQuirk() const { return m_determinedTopQuirk; } - bool topQuirk() const { return m_topQuirk; } - bool bottomQuirk() const { return m_bottomQuirk; } - int posMargin() const { return m_posMargin; } - int negMargin() const { return m_negMargin; } - int margin() const { return m_posMargin - m_negMargin; } - }; - - class PageBreakInfo { - int m_pageBottom; // Next calculated page-break - bool m_forcePageBreak : 1; // Must break before next block - // ### to do better "page-break-after/before: avoid" this struct - // should keep a pagebreakAvoid block and gather children in it - public: - PageBreakInfo(int pageBottom) : m_pageBottom(pageBottom), m_forcePageBreak(false) {}; - bool forcePageBreak() { return m_forcePageBreak; } - void setForcePageBreak(bool b) { m_forcePageBreak = b; } - int pageBottom() { return m_pageBottom; }; - void setPageBottom(int bottom) { m_pageBottom = bottom; } - }; - - virtual bool canClear(RenderObject *child, PageBreakLevel level); - void clearPageBreak(RenderObject* child, int pageBottom); - - void adjustPositionedBlock(RenderObject* child, const MarginInfo& marginInfo); - void adjustFloatingBlock(const MarginInfo& marginInfo); - RenderObject* handleSpecialChild(RenderObject* child, const MarginInfo& marginInfo, CompactInfo& compactInfo, bool& handled); - RenderObject* handleFloatingChild(RenderObject* child, const MarginInfo& marginInfo, bool& handled); - RenderObject* handlePositionedChild(RenderObject* child, const MarginInfo& marginInfo, bool& handled); - RenderObject* handleCompactChild(RenderObject* child, CompactInfo& compactInfo, const MarginInfo& marginInfo, bool& handled); - RenderObject* handleRunInChild(RenderObject* child, bool& handled); - void collapseMargins(RenderObject* child, MarginInfo& marginInfo, int yPosEstimate); - void clearFloatsIfNeeded(RenderObject* child, MarginInfo& marginInfo, int oldTopPosMargin, int oldTopNegMargin); - void adjustSizeForCompactIfNeeded(RenderObject* child, CompactInfo& compactInfo); - void insertCompactIfNeeded(RenderObject* child, CompactInfo& compactInfo); - int estimateVerticalPosition(RenderObject* child, const MarginInfo& info); - void determineHorizontalPosition(RenderObject* child); - void handleBottomOfBlock(int top, int bottom, MarginInfo& marginInfo); - void setCollapsedBottomMargin(const MarginInfo& marginInfo); - void clearChildOfPageBreaks(RenderObject* child, PageBreakInfo &pageBreakInfo, MarginInfo &marginInfo); - // End helper functions and structs used by layoutBlockChildren. - -protected: - // How much content overflows out of our block vertically or horizontally (all we support - // for now is spillage out of the bottom and the right, which are the common cases). - int m_overflowHeight; - int m_overflowWidth; - - // Left and top overflow. - int m_overflowTop; - int m_overflowLeft; - -private: - TQPtrList<FloatingObject>* m_floatingObjects; - TQPtrList<RenderObject>* m_positionedObjects; - - bool m_childrenInline : 1; - bool m_firstLine : 1; // used in inline layouting - EClear m_clearStatus : 2; // used during layuting of paragraphs - bool m_avoidPageBreak : 1; // anonymous avoid page-break block - bool m_topMarginQuirk : 1; - bool m_bottomMarginQuirk : 1; - - short m_maxTopPosMargin; - short m_maxTopNegMargin; - short m_maxBottomPosMargin; - short m_maxBottomNegMargin; - -}; - -} // namespace - -#endif // RENDER_BLOCK_H - |