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-/*
- * This file is part of the html renderer for KDE.
- *
- * Copyright (C) 2000-2003 Lars Knoll (knoll@kde.org)
- * (C) 2000 Antti Koivisto (koivisto@kde.org)
- * (C) 2000-2003 Dirk Mueller (mueller@kde.org)
- * (C) 2002-2003 Apple Computer, Inc.
- * (C) 2004 Allan Sandfeld Jensen
- *
- * 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_object_h
-#define render_object_h
-
-#include <tqcolor.h>
-#include <tqrect.h>
-#include <assert.h>
-#include <tqvaluelist.h>
-
-#include <kdebug.h>
-#include <kglobal.h>
-
-#include "xml/dom_docimpl.h"
-#include "misc/khtmllayout.h"
-#include "misc/loader_client.h"
-#include "misc/helper.h"
-#include "rendering/render_style.h"
-
-class TQPainter;
-class TQTextStream;
-class CSSStyle;
-class KHTMLView;
-
-#ifndef NDEBUG
-#define KHTMLAssert( x ) if( !(x) ) { \
- const RenderObject *o = this; while( o->parent() ) o = o->parent(); \
- o->printTree(); \
- tqDebug(" this object = %p, %s", (void*) this, kdBacktrace().latin1() ); \
- assert( x ); \
-}
-#else
-#define KHTMLAssert( x )
-#endif
-
-/*
- * The painting of a layer occurs in three distinct phases. Each phase involves
- * a recursive descent into the layer's render objects. The first phase is the background phase.
- * The backgrounds and borders of all blocks are painted. Inlines are not painted at all.
- * Floats must paint above block backgrounds but entirely below inline content that can overlap them.
- * In the foreground phase, all inlines are fully painted. Inline replaced elements will get all
- * three phases invoked on them during this phase.
- */
-
-typedef enum {
- PaintActionElementBackground = 0,
- PaintActionChildBackground,
- PaintActionChildBackgrounds,
- PaintActionFloat,
- PaintActionForeground,
- PaintActionOutline,
- PaintActionSelection,
- PaintActionCollapsedTableBorders
-} PaintAction;
-
-typedef enum {
- HitTestAll = 0,
- HitTestSelfOnly = 1,
- HitTestChildrenOnly = 2
-} HitTestAction;
-
-typedef enum {
- PageBreakNormal = 0, // all rules apply
- PageBreakHarder = 1, // page-break-inside: avoid is ignored
- PageBreakForced = 2 // page-break-after/before: avoid, orphans and widows ignored
-} PageBreakLevel;
-
-typedef enum {
- LowPriority = 0,
- NormalPriority = 1,
- HighPriority = 2,
- RealtimePriority = 3
-} Priority;
-
-inline PageBreakLevel operator| (PageBreakLevel a, PageBreakLevel b) {
- if (a == PageBreakForced || b == PageBreakForced)
- return PageBreakForced;
- if (a == PageBreakHarder || b == PageBreakHarder)
- return PageBreakHarder;
- return PageBreakNormal;
-}
-
-namespace DOM {
- class HTMLAreaElementImpl;
- class DOMString;
- class NodeImpl;
- class DocumentImpl;
- class ElementImpl;
- class EventImpl;
-}
-
-namespace khtml {
- class RenderFlow;
- class RenderStyle;
- class RenderTable;
- class CachedObject;
- class RenderObject;
- class RenderCanvas;
- class RenderText;
- class RenderFrameSet;
- class RenderArena;
- class RenderLayer;
- class RenderBlock;
- class InlineBox;
- class InlineFlowBox;
- class CounterNode;
-
-/**
- * Base Class for all rendering tree objects.
- */
-class RenderObject : public CachedObjectClient
-{
- RenderObject(const RenderObject&);
- RenderObject& operator=(const RenderObject&);
-public:
-
- RenderObject(DOM::NodeImpl* node);
- virtual ~RenderObject();
-
- RenderObject *parent() const { return m_parent; }
-
- RenderObject *previousSibling() const { return m_previous; }
- RenderObject *nextSibling() const { return m_next; }
-
- virtual RenderObject *firstChild() const { return 0; }
- virtual RenderObject *lastChild() const { return 0; }
-
- RenderObject *nextRenderer() const;
- RenderObject *previousRenderer() const;
-
- virtual bool childAllowed() const { return false; }
- virtual int borderTopExtra() const { return 0; }
- virtual int borderBottomExtra() const { return 0; }
-
- virtual RenderLayer* layer() const { return 0; }
- RenderLayer* enclosingLayer() const;
- RenderLayer* enclosingStackingContext() const;
- void addLayers(RenderLayer* parentLayer, RenderObject* newObject);
- void removeLayers(RenderLayer* parentLayer);
- void moveLayers(RenderLayer* oldParent, RenderLayer* newParent);
- RenderLayer* findNextLayer(RenderLayer* parentLayer, RenderObject* startPoint,
- bool checkParent=true);
- virtual void positionChildLayers() { }
- virtual bool requiresLayer() const {
- return isRoot()/* ### */ || isPositioned() || isRelPositioned() || hasOverflowClip();
- }
-
- // ### rename to overflowClipRect and clipRect
- virtual TQRect getOverflowClipRect(int /*tx*/, int /*ty*/)
- { return TQRect(0,0,0,0); }
- virtual TQRect getClipRect(int /*tx*/, int /*ty*/) { return TQRect(0,0,0,0); }
- bool hasClip() const { return isPositioned() && style()->hasClip(); }
- bool hasOverflowClip() const { return m_hasOverflowClip; }
-
- bool scrollsOverflow() const { return scrollsOverflowX() || scrollsOverflowY(); }
- bool scrollsOverflowX() const { return hasOverflowClip() && (style()->overflowX() == OSCROLL || style()->overflowX() == OAUTO); }
- bool scrollsOverflowY() const { return hasOverflowClip() && (style()->overflowY() == OSCROLL || style()->overflowY() == OAUTO); }
-
- virtual int getBaselineOfFirstLineBox() { return -1; } // Tables and blocks implement this.
- virtual InlineFlowBox* getFirstLineBox() { return 0; } // Tables and blocks implement this.
-
- // Whether or not a positioned element requires normal flow x/y to be computed
- // to determine its position.
- bool hasStaticX() const;
- bool hasStaticY() const;
-
- // Linear tree traversal
- RenderObject *objectBelow() const;
- RenderObject *objectAbove() const;
-
- // Returns if an object has counter-increment or counter-reset
- bool hasCounter(const TQString& counter) const;
- // Calculates the value of the counter
- CounterNode* getCounter(const TQString& counter, bool view = false, bool counters = false);
- // Detaches all counterNodes
- void detachCounters();
-
-
-protected:
- // Helper functions for counter-cache
- void insertCounter(const TQString& counter, CounterNode* value);
- CounterNode* lookupCounter(const TQString& counter) const;
-
-public:
- //////////////////////////////////////////
- // RenderObject tree manipulation
- virtual void addChild(RenderObject *newChild, RenderObject *beforeChild = 0);
- void removeChild(RenderObject *oldChild);
-
- // raw tree manipulation
- virtual RenderObject* removeChildNode(RenderObject* child);
- virtual void appendChildNode(RenderObject* child);
- virtual void insertChildNode(RenderObject* child, RenderObject* before);
- //////////////////////////////////////////
-
- //////////////////////////////////////////
- // Helper functions. Dangerous to use!
- void setPreviousSibling(RenderObject *previous) { m_previous = previous; }
- void setNextSibling(RenderObject *next) { m_next = next; }
- void setParent(RenderObject *parent) { m_parent = parent; }
- //////////////////////////////////////////
-
-public:
- virtual const char *renderName() const { return "RenderObject"; }
-#ifdef ENABLE_DUMP
- TQString information() const;
- virtual void printTree(int indent=0) const;
- virtual void dump(TQTextStream &stream, const TQString &ind = TQString::null) const;
-#endif
-
- static RenderObject *createObject(DOM::NodeImpl* node, RenderStyle* style);
-
- // Overloaded new operator. Derived classes must override operator new
- // in order to allocate out of the RenderArena.
- void* operator new(size_t sz, RenderArena* renderArena) throw();
-
- // Overridden to prevent the normal delete from being called.
- void operator delete(void* ptr, size_t sz);
-
-private:
- // The normal operator new is disallowed on all render objects.
- void* operator new(size_t sz);
-
-public:
- RenderArena* renderArena() const;
- virtual RenderFlow* continuation() const { return 0; }
- virtual bool isInlineContinuation() const { return false; }
-
-
- bool isRoot() const { return m_isRoot && !m_isAnonymous; }
- void setIsRoot(bool b) { m_isRoot = b; }
- bool isHR() const;
- // some helper functions...
- virtual bool isRenderBlock() const { return false; }
- virtual bool isRenderInline() const { return false; }
- virtual bool isInlineFlow() const { return false; }
- virtual bool isBlockFlow() const { return false; }
- virtual bool isInlineBlockOrInlineTable() const { return false; }
- virtual bool childrenInline() const { return false; }
- virtual bool isBox() const { return false; }
- virtual bool isRenderReplaced() const { return false; }
-
- virtual bool isGlyph() const { return false; }
- virtual bool isCounter() const { return false; }
- virtual bool isQuote() const { return false; }
- virtual bool isListItem() const { return false; }
- virtual bool isListMarker() const { return false; }
- virtual bool isCanvas() const { return false; }
- virtual bool isBR() const { return false; }
- virtual bool isTableCell() const { return false; }
- virtual bool isTableRow() const { return false; }
- virtual bool isTableSection() const { return false; }
- virtual bool isTableCol() const { return false; }
- virtual bool isTable() const { return false; }
- virtual bool isWidget() const { return false; }
- virtual bool isBody() const { return false; }
- virtual bool isFormElement() const { return false; }
- virtual bool isFrameSet() const { return false; }
- virtual bool isApplet() const { return false; }
-
- bool isHTMLMarquee() const;
- bool isWordBreak() const;
-
- bool isAnonymous() const { return m_isAnonymous; }
- void setIsAnonymous(bool b) { m_isAnonymous = b; }
- bool isAnonymousBlock() const { return isAnonymous() && style()->display() == BLOCK && node()->isDocumentNode(); }
- bool isPseudoAnonymous() const { return isAnonymous() && !node()->isDocumentNode(); }
-
- bool isFloating() const { return m_floating; }
- bool isPositioned() const { return m_positioned; }
- bool isRelPositioned() const { return m_relPositioned; }
- bool isText() const { return m_isText; }
- bool isInline() const { return m_inline; }
- bool isCompact() const { return style()->display() == COMPACT; } // compact
- bool isRunIn() const { return style()->display() == RUN_IN; } // run-in object
- bool mouseInside() const;
- bool isReplaced() const { return m_replaced; }
- bool isReplacedBlock() const { return isInline() && isReplaced() && isRenderBlock(); }
- bool shouldPaintBackgroundOrBorder() const { return m_paintBackground; }
- bool needsLayout() const { return m_needsLayout || m_normalChildNeedsLayout || m_posChildNeedsLayout; }
- bool markedForRepaint() const { return m_markedForRepaint; }
- void setMarkedForRepaint(bool m) { m_markedForRepaint = m; }
- bool selfNeedsLayout() const { return m_needsLayout; }
- bool posChildNeedsLayout() const { return m_posChildNeedsLayout; }
- bool normalChildNeedsLayout() const { return m_normalChildNeedsLayout; }
- bool minMaxKnown() const{ return m_minMaxKnown; }
- bool overhangingContents() const { return m_overhangingContents; }
- bool hasFirstLine() const { return m_hasFirstLine; }
- bool isSelectionBorder() const { return m_isSelectionBorder; }
- bool recalcMinMax() const { return m_recalcMinMax; }
-
- RenderCanvas* canvas() const;
- // don't even think about making this method virtual!
- DOM::DocumentImpl* document() const;
- DOM::NodeImpl* element() const { return isAnonymous() ? 0L : m_node; }
- DOM::NodeImpl* node() const { return m_node; }
-
- /**
- * returns the object containing this one. can be different from parent for
- * positioned elements
- */
- RenderObject *container() const;
-
- void setOverhangingContents(bool p=true);
- void markContainingBlocksForLayout();
- void dirtyFormattingContext( bool checkContainer );
- void repaintDuringLayout();
- void setNeedsLayout(bool b, bool markParents = true);
- void setChildNeedsLayout(bool b, bool markParents = true);
- void setMinMaxKnown(bool b=true) {
- m_minMaxKnown = b;
- if ( !b ) {
- RenderObject *o = this;
- RenderObject *root = this;
- while( o ) { // ### && !o->m_recalcMinMax ) {
- o->m_recalcMinMax = true;
- root = o;
- o = o->m_parent;
- }
- }
- }
- void setNeedsLayoutAndMinMaxRecalc() {
- setMinMaxKnown(false);
- setNeedsLayout(true);
- }
- void setPositioned(bool b=true) { m_positioned = b; }
- void setRelPositioned(bool b=true) { m_relPositioned = b; }
- void setFloating(bool b=true) { m_floating = b; }
- void setInline(bool b=true) { m_inline = b; }
- void setMouseInside(bool b=true) { m_mouseInside = b; }
- void setShouldPaintBackgroundOrBorder(bool b=true) { m_paintBackground = b; }
- void setRenderText() { m_isText = true; }
- void setReplaced(bool b=true) { m_replaced = b; }
- void setHasOverflowClip(bool b = true) { m_hasOverflowClip = b; }
- void setIsSelectionBorder(bool b=true) { m_isSelectionBorder = b; }
-
- void scheduleRelayout(RenderObject *clippedObj = 0);
-
- void updateBackgroundImages(RenderStyle* oldStyle);
-
- virtual InlineBox* createInlineBox(bool makePlaceHolderBox, bool isRootLineBox);
-
- virtual short lineHeight( bool firstLine ) const;
- virtual short verticalPositionHint( bool firstLine ) const;
- virtual short baselinePosition( bool firstLine ) const;
- short getVerticalPosition( bool firstLine, RenderObject* ref=0 ) const;
-
- /*
- * Print the object and its children, clipped by (x|y|w|h).
- * (tx|ty) is the calculated position of the parent
- */
- struct PaintInfo {
- PaintInfo(TQPainter* _p, const TQRect& _r, PaintAction _phase)
- : p(_p), r(_r), phase(_phase), outlineObjects(0) {}
- ~PaintInfo() { delete outlineObjects; }
- TQPainter* p;
- TQRect r;
- PaintAction phase;
- TQValueList<RenderFlow *>* outlineObjects; // used to list which outlines should be painted by a block with inline children
- };
- virtual void paint( PaintInfo& i, int tx, int ty);
-
- void paintBorder(TQPainter *p, int _tx, int _ty, int w, int h, const RenderStyle* style, bool begin=true, bool end=true);
- void paintOutline(TQPainter *p, int _tx, int _ty, int w, int h, const RenderStyle* style);
-
- virtual void paintBoxDecorations(PaintInfo&, int /*_tx*/, int /*_ty*/) {}
-
- virtual void paintBackgroundExtended(TQPainter* /*p*/, const TQColor& /*c*/, const BackgroundLayer */*bgLayer*/,
- int /*clipy*/, int /*cliph*/, int /*_tx*/, int /*_ty*/,
- int /*w*/, int /*height*/, int /*bleft*/, int /*bright*/, int /*pleft*/, int /*pright*/ ) {}
-
-
- /*
- * This function calculates the minimum & maximum width that the object
- * can be set to.
- *
- * when the Element calls setMinMaxKnown(true), calcMinMaxWidth() will
- * be no longer called.
- *
- * when a element has a fixed size, m_minWidth and m_maxWidth should be
- * set to the same value. This has the special meaning that m_width,
- * contains the actual value.
- *
- * assumes calcMinMaxWidth has already been called for all children.
- */
- virtual void calcMinMaxWidth() { }
-
- /*
- * Does the min max width recalculations after changes.
- */
- void recalcMinMaxWidths();
-
- /*
- * Calculates the actual width of the object (only for non inline
- * objects)
- */
- virtual void calcWidth() {}
-
- /*
- * Calculates the actual width of the object (only for non inline
- * objects)
- */
- virtual void calcHeight() {}
-
- /*
- * This function should cause the Element to calculate its
- * width and height and the layout of its content
- *
- * when the Element calls setNeedsLayout(false), layout() is no
- * longer called during relayouts, as long as there is no
- * style sheet change. When that occurs, m_needsLayout will be
- * set to true and the Element receives layout() calls
- * again.
- */
- virtual void layout() = 0;
-
- /* This function performs a layout only if one is needed. */
- void layoutIfNeeded() { if (needsLayout()) layout(); }
-
- // used for element state updates that can not be fixed with a
- // repaint and do not need a relayout
- virtual void updateFromElement() {}
-
- // Called immediately after render-object is inserted
- virtual void attach() { m_attached = true; }
- bool attached() { return m_attached; }
- // The corresponding closing element has been parsed. ### remove me
- virtual void close() { }
-
- virtual int availableHeight() const { return 0; }
-
- // Whether or not the element shrinks to its max width (rather than filling the width
- // of a containing block). HTML4 buttons, legends, and floating/compact elements do this.
- bool sizesToMaxWidth() const;
-
- /*
- * NeesPageClear indicates the object crossed a page-break but could not break itself and now
- * needs to be moved clear by its parent.
- */
- void setNeedsPageClear(bool b = true) { m_needsPageClear = b; }
- virtual bool needsPageClear() const { return m_needsPageClear; }
-
- /*
- * ContainsPageBreak indicates the object contains a clean page-break.
- * ### should be removed and replaced with (crossesPageBreak && !needsPageClear)
- */
- void setContainsPageBreak(bool b = true) { m_containsPageBreak = b; }
- virtual bool containsPageBreak() const { return m_containsPageBreak; }
-
- virtual int pageTopAfter(int y) const { if (parent()) return parent()->pageTopAfter(y); else return 0; }
-
- virtual int crossesPageBreak(int top, int bottom) const
- { if (parent()) return parent()->crossesPageBreak(top, bottom); else return 0; }
-
- // Checks if a page-break before child is possible at the given page-break level
- // false means the child should attempt the break self.
- virtual bool canClear(RenderObject */*child*/, PageBreakLevel level)
- { if (parent()) return parent()->canClear(this, level); else return false; }
-
- void setAfterPageBreak(bool b = true) { m_afterPageBreak = b; };
- void setBeforePageBreak(bool b = true) { m_beforePageBreak = b; };
- virtual bool afterPageBreak() const { return m_afterPageBreak; }
- virtual bool beforePageBreak() const { return m_beforePageBreak; }
-
- // does a query on the rendertree and finds the innernode
- // and overURL for the given position
- // if readonly == false, it will recalc hover styles accordingly
- class NodeInfo
- {
- friend class RenderImage;
- friend class RenderFlow;
- friend class RenderInline;
- friend class RenderText;
- friend class RenderWidget;
- friend class RenderObject;
- friend class RenderFrameSet;
- friend class RenderLayer;
- friend class DOM::HTMLAreaElementImpl;
- public:
- NodeInfo(bool readonly, bool active)
- : m_innerNode(0), m_innerNonSharedNode(0), m_innerURLElement(0), m_readonly(readonly), m_active(active)
- { }
-
- DOM::NodeImpl* innerNode() const { return m_innerNode; }
- DOM::NodeImpl* innerNonSharedNode() const { return m_innerNonSharedNode; }
- DOM::NodeImpl* URLElement() const { return m_innerURLElement; }
- bool readonly() const { return m_readonly; }
- bool active() const { return m_active; }
-
- private:
- void setInnerNode(DOM::NodeImpl* n) { m_innerNode = n; }
- void setInnerNonSharedNode(DOM::NodeImpl* n) { m_innerNonSharedNode = n; }
- void setURLElement(DOM::NodeImpl* n) { m_innerURLElement = n; }
-
- DOM::NodeImpl* m_innerNode;
- DOM::NodeImpl* m_innerNonSharedNode;
- DOM::NodeImpl* m_innerURLElement;
- bool m_readonly;
- bool m_active;
- };
-
- /** contains stateful information for a checkSelectionPoint call
- */
- struct SelPointState {
- /** last node that was before the current position */
- DOM::NodeImpl *m_lastNode;
- /** offset of last node */
- long m_lastOffset;
- /** true when the last node had the result SelectionAfterInLine */
- bool m_afterInLine;
-
- SelPointState() : m_lastNode(0), m_lastOffset(0), m_afterInLine(false)
- {}
- };
-
- virtual FindSelectionResult checkSelectionPoint( int _x, int _y, int _tx, int _ty,
- DOM::NodeImpl*&, int & offset,
- SelPointState & );
- virtual bool nodeAtPoint(NodeInfo& info, int x, int y, int tx, int ty, HitTestAction, bool inside = false);
- void setInnerNode(NodeInfo& info);
-
- // set the style of the object.
- virtual void setStyle(RenderStyle *style);
-
- // returns the containing block level element for this element.
- RenderBlock *containingBlock() const;
-
- // return just the width of the containing block
- virtual short containingBlockWidth() const;
- // return just the height of the containing block
- virtual int containingBlockHeight() const;
-
- // size of the content area (box size minus padding/border)
- virtual short contentWidth() const { return 0; }
- virtual int contentHeight() const { return 0; }
-
- // intrinsic extend of replaced elements. undefined otherwise
- virtual short intrinsicWidth() const { return 0; }
- virtual int intrinsicHeight() const { return 0; }
-
- // relative to parent node
- virtual void setPos( int /*xPos*/, int /*yPos*/ ) { }
- virtual void setWidth( int /*width*/ ) { }
- virtual void setHeight( int /*height*/ ) { }
-
- virtual int xPos() const { return 0; }
- virtual int yPos() const { return 0; }
-
- /** the position of the object from where it begins drawing, including
- * its negative overflow
- */
- int effectiveXPos() const { return xPos() + (hasOverflowClip() ? 0 : overflowLeft()); }
-
- /** the position of the object from where it begins drawing, including
- * its negative overflow
- */
- int effectiveYPos() const { return yPos() + (hasOverflowClip() ? -borderTopExtra() : kMin(overflowTop(), -borderTopExtra())); }
-
- /** Leftmost coordinate of this inline element relative to containing
- * block. Always zero for non-inline elements.
- */
- virtual int inlineXPos() const { return 0; }
- /** Topmost coordinate of this inline element relative to containing
- * block. Always zero for non-inline elements.
- */
- virtual int inlineYPos() const { return 0; }
-
- // calculate client position of box
- virtual bool absolutePosition(int &/*xPos*/, int &/*yPos*/, bool fixed = false) const;
-
- // width and height are without margins but include paddings and borders
- virtual short width() const { return 0; }
- virtual int height() const { return 0; }
-
- // The height 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 height(); }
- virtual int overflowWidth() const { return width(); }
- // how much goes over the left hand side (0 or a negative number)
- virtual int overflowTop() const { return 0; }
- virtual int overflowLeft() const { return 0; }
-
- /**
- * Returns the height that is effectively considered when contemplating the
- * object as a whole -- usually the overflow height, or the height if clipped.
- */
- int effectiveHeight() const { return hasOverflowClip() ? height() + borderTopExtra() + borderBottomExtra() :
- kMax(overflowHeight() - overflowTop(), height() + borderTopExtra() + borderBottomExtra()); }
- /**
- * Returns the width that is effectively considered when contemplating the
- * object as a whole -- usually the overflow width, or the width if clipped.
- */
- int effectiveWidth() const { return hasOverflowClip() ? width() : overflowWidth() - overflowLeft(); }
-
- // IE extensions, heavily used in ECMA
- virtual short offsetWidth() const { return width(); }
- virtual int offsetHeight() const { return height() + borderTopExtra() + borderBottomExtra(); }
- virtual int offsetLeft() const;
- virtual int offsetTop() const;
- virtual RenderObject* offsetParent() const;
- short clientWidth() const;
- int clientHeight() const;
- short scrollWidth() const;
- int scrollHeight() const;
-
- virtual bool isSelfCollapsingBlock() const { return false; }
- short collapsedMarginTop() const { return maxTopMargin(true)-maxTopMargin(false); }
- short collapsedMarginBottom() const { return maxBottomMargin(true)-maxBottomMargin(false); }
-
- virtual bool isTopMarginQuirk() const { return false; }
- virtual bool isBottomMarginQuirk() const { return false; }
- virtual short maxTopMargin(bool positive) const
- { return positive ? kMax( int( marginTop() ), 0 ) : - kMin( int( marginTop() ), 0 ); }
- virtual short maxBottomMargin(bool positive) const
- { return positive ? kMax( int( marginBottom() ), 0 ) : - kMin( int( marginBottom() ), 0 ); }
-
- virtual short marginTop() const { return 0; }
- virtual short marginBottom() const { return 0; }
- virtual short marginLeft() const { return 0; }
- virtual short marginRight() const { return 0; }
-
- virtual int paddingTop() const;
- virtual int paddingBottom() const;
- virtual int paddingLeft() const;
- virtual int paddingRight() const;
-
- virtual int borderTop() const { return style()->borderTopWidth(); }
- virtual int borderBottom() const { return style()->borderBottomWidth(); }
- virtual int borderLeft() const { return style()->borderLeftWidth(); }
- virtual int borderRight() const { return style()->borderRightWidth(); }
-
- virtual short minWidth() const { return 0; }
- virtual int maxWidth() const { return 0; }
-
- RenderStyle* style() const { return m_style; }
- RenderStyle* style( bool firstLine ) const {
- RenderStyle *s = m_style;
- if( firstLine && hasFirstLine() ) {
- RenderStyle *pseudoStyle = style()->getPseudoStyle(RenderStyle::FIRST_LINE);
- if ( pseudoStyle )
- s = pseudoStyle;
- }
- return s;
- }
-
- void getTextDecorationColors(int decorations, TQColor& underline, TQColor& overline,
- TQColor& linethrough, bool quirksMode=false);
-
- enum BorderSide {
- BSTop, BSBottom, BSLeft, BSRight
- };
- void drawBorder(TQPainter *p, int x1, int y1, int x2, int y2, BorderSide s,
- TQColor c, const TQColor& textcolor, EBorderStyle style,
- int adjbw1, int adjbw2, bool invalidisInvert = false);
-
- // Used by collapsed border tables.
- virtual void collectBorders(TQValueList<CollapsedBorderValue>& borderStyles);
-
- // force a complete repaint
- virtual void repaint(Priority p = NormalPriority) { if(m_parent) m_parent->repaint(p); }
- virtual void repaintRectangle(int x, int y, int w, int h, Priority p=NormalPriority, bool f=false);
-
- virtual unsigned int length() const { return 1; }
-
- virtual bool isHidden() const { return isFloating() || isPositioned(); }
-
- // Special objects are objects that are neither really inline nor blocklevel
- bool isFloatingOrPositioned() const { return (isFloating() || isPositioned()); };
- virtual bool hasOverhangingFloats() const { return false; }
- virtual bool hasFloats() const { return false; }
- virtual bool containsFloat(RenderObject* /*o*/) const { return false; }
- virtual void markAllDescendantsWithFloatsForLayout(RenderObject* /*floatToRemove*/ = 0) {}
-
- bool flowAroundFloats() const;
- bool usesLineWidth() const;
-
- // positioning of inline children (bidi)
- virtual void position(InlineBox*, int, int, bool) {}
-// virtual void position(int, int, int, int, int, bool, bool, int) {}
-
- // Applied as a "slop" to dirty rect checks during the outline painting phase's dirty-rect checks.
- int maximalOutlineSize(PaintAction p) const;
-
- enum SelectionState {
- SelectionNone,
- SelectionStart,
- SelectionInside,
- SelectionEnd,
- SelectionBoth
- };
-
- virtual SelectionState selectionState() const { return SelectionNone;}
- virtual void setSelectionState(SelectionState) {}
-
- /**
- * Flags which influence the appearence and position
- * @param CFOverride input overrides existing character, caret should be
- * cover the whole character
- * @param CFOutside coordinates are to be interpreted outside of the
- * render object
- * @param CFOutsideEnd coordinates are to be interpreted at the outside
- * end of the render object (only valid if CFOutside is also set)
- */
- enum CaretFlags { CFOverride = 0x01, CFOutside = 0x02, CFOutsideEnd = 0x04 };
-
- /**
- * Returns the content coordinates of the caret within this render object.
- * @param offset zero-based offset determining position within the render object.
- * @param flags combination of enum CaretFlags
- * @param _x returns the left coordinate
- * @param _y returns the top coordinate
- * @param width returns the caret's width
- * @param height returns the caret's height
- */
- virtual void caretPos(int offset, int flags, int &_x, int &_y, int &width, int &height);
-
- // returns the lowest position of the lowest object in that particular object.
- // This 'height' is relative to the topleft of the margin box of the object.
- // Implemented in RenderFlow.
- virtual int lowestPosition(bool /*includeOverflowInterior*/=true, bool /*includeSelf*/=true) const { return 0; }
- virtual int rightmostPosition(bool /*includeOverflowInterior*/=true, bool /*includeSelf*/=true) const { return 0; }
- virtual int leftmostPosition(bool /*includeOverflowInterior*/=true, bool /*includeSelf*/=true) const { return 0; }
- virtual int highestPosition(bool /*includeOverflowInterior*/=true, bool /*includeSelf*/=true) const { return 0; }
-
- // recursively invalidate current layout
- // unused: void invalidateLayout();
-
- virtual void calcVerticalMargins() {}
- void removeFromObjectLists();
-
- virtual void deleteInlineBoxes(RenderArena* arena=0) {(void)arena;}
- virtual void detach( );
-
- void setDoNotDelete(bool b) { m_doNotDelete = b; }
- bool doNotDelete() const { return m_doNotDelete; }
-
- const TQFont &font(bool firstLine) const {
- return style( firstLine )->font();
- }
-
- const TQFontMetrics &fontMetrics(bool firstLine) const {
- return style( firstLine )->fontMetrics();
- }
-
- /** returns the lowest possible value the caret offset may have to
- * still point to a valid position.
- *
- * Returns 0 by default.
- */
- virtual long minOffset() const { return 0; }
- /** returns the highest possible value the caret offset may have to
- * still point to a valid position.
- *
- * Returns 0 by default, as generic elements are considered to have no
- * width.
- */
- virtual long maxOffset() const { return 0; }
-
- virtual void setPixmap(const TQPixmap &, const TQRect&, CachedImage *);
-
- TQRegion visibleFlowRegion(int x, int y) const;
-
-protected:
- virtual void selectionStartEnd(int& spos, int& epos);
-
- virtual TQRect viewRect() const;
- void remove();
- void invalidateVerticalPositions();
- bool attemptDirectLayerTranslation();
- void updateWidgetMasks();
-
- virtual void removeLeftoverAnonymousBoxes();
-
- void arenaDelete(RenderArena *arena);
-
-private:
- RenderStyle* m_style;
- DOM::NodeImpl* m_node;
- RenderObject *m_parent;
- RenderObject *m_previous;
- RenderObject *m_next;
-
- short m_verticalPosition;
-
- bool m_needsLayout : 1;
- bool m_normalChildNeedsLayout : 1;
- bool m_markedForRepaint : 1;
- bool m_posChildNeedsLayout : 1;
-
- bool m_minMaxKnown : 1;
- bool m_floating : 1;
-
- bool m_positioned : 1;
- bool m_overhangingContents : 1;
- bool m_relPositioned : 1;
- bool m_paintBackground : 1; // if the box has something to paint in the
- // background painting phase (background, border, etc)
-
- bool m_isAnonymous : 1;
- bool m_recalcMinMax : 1;
- bool m_isText : 1;
- bool m_inline : 1;
- bool m_attached : 1;
-
- bool m_replaced : 1;
- bool m_mouseInside : 1;
- bool m_hasFirstLine : 1;
- bool m_isSelectionBorder : 1;
-
- bool m_isRoot : 1;
-
- bool m_beforePageBreak : 1;
- bool m_afterPageBreak : 1;
-
- bool m_needsPageClear : 1;
- bool m_containsPageBreak : 1;
-
- bool m_hasOverflowClip : 1;
-
- bool m_doNotDelete : 1; // This object should not be auto-deleted
-
- // ### we have 16 + 26 bits.
-
-
- void arenaDelete(RenderArena *arena, void *objectBase);
-
- friend class RenderLayer;
- friend class RenderListItem;
- friend class RenderContainer;
- friend class RenderCanvas;
-};
-
-
-enum VerticalPositionHint {
- PositionTop = -0x4000,
- PositionBottom = 0x4000,
- PositionUndefined = 0x3fff
-};
-
-} //namespace
-#endif
generated by cgit v1.2.3 (git 2.25.1) at 2024-04-24 19:10:37 +0000