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tdelibs/khtml/rendering/render_object.cpp

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/**
* This file is part of the html renderer for KDE.
*
* Copyright (C) 1999-2003 Lars Knoll (knoll@kde.org)
* (C) 1999 Antti Koivisto (koivisto@kde.org)
* (C) 2000-2003 Dirk Mueller (mueller@kde.org)
* (C) 2002-2006 Apple Computer, Inc.
* (C) 2006 Germain Garand <germain@ebooksfrance.org>
*
* 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.
*
*/
#include "rendering/render_object.h"
#include "rendering/render_table.h"
#include "rendering/render_list.h"
#include "rendering/render_canvas.h"
#include "rendering/render_block.h"
#include "rendering/render_arena.h"
#include "rendering/render_layer.h"
#include "rendering/render_line.h"
#include "rendering/render_inline.h"
#include "rendering/render_text.h"
#include "rendering/render_replaced.h"
#include "rendering/render_generated.h"
#include "rendering/counter_tree.h"
#include "xml/dom_elementimpl.h"
#include "xml/dom_docimpl.h"
#include "dom/dom_doc.h"
#include "misc/htmlhashes.h"
#include "misc/loader.h"
#include <kdebug.h>
#include <kglobal.h>
#include <tqpainter.h>
#include "khtmlview.h"
#include <khtml_part.h>
#include <assert.h>
using namespace DOM;
using namespace khtml;
#define RED_LUMINOSITY 30
#define GREEN_LUMINOSITY 59
#define BLUE_LUMINOSITY 11
#define INTENSITY_FACTOR 25
#define LIGHT_FACTOR 0
#define LUMINOSITY_FACTOR 75
#define MAX_COLOR 255
#define COLOR_DARK_THRESHOLD 51
#define COLOR_LIGHT_THRESHOLD 204
#define COLOR_LITE_BS_FACTOR 45
#define COLOR_LITE_TS_FACTOR 70
#define COLOR_DARK_BS_FACTOR 30
#define COLOR_DARK_TS_FACTOR 50
#define LIGHT_GRAY qRgb(192, 192, 192)
#define DARK_GRAY qRgb(96, 96, 96)
#ifndef NDEBUG
static void *baseOfRenderObjectBeingDeleted;
#endif
//#define MASK_DEBUG
void* RenderObject::operator new(size_t sz, RenderArena* renderArena) throw()
{
return renderArena->allocate(sz);
}
void RenderObject::operator delete(void* ptr, size_t sz)
{
assert(baseOfRenderObjectBeingDeleted == ptr);
// Stash size where detach can find it.
*(size_t *)ptr = sz;
}
RenderObject *RenderObject::createObject(DOM::NodeImpl* node, RenderStyle* style)
{
RenderObject *o = 0;
khtml::RenderArena* arena = node->getDocument()->renderArena();
switch(style->display())
{
case NONE:
break;
case INLINE:
o = new (arena) RenderInline(node);
break;
case BLOCK:
o = new (arena) RenderBlock(node);
break;
case INLINE_BLOCK:
o = new (arena) RenderBlock(node);
break;
case LIST_ITEM:
o = new (arena) RenderListItem(node);
break;
case RUN_IN:
case COMPACT:
o = new (arena) RenderBlock(node);
break;
case TABLE:
case INLINE_TABLE:
style->setFlowAroundFloats(true);
o = new (arena) RenderTable(node);
break;
case TABLE_ROW_GROUP:
case TABLE_HEADER_GROUP:
case TABLE_FOOTER_GROUP:
o = new (arena) RenderTableSection(node);
break;
case TABLE_ROW:
o = new (arena) RenderTableRow(node);
break;
case TABLE_COLUMN_GROUP:
case TABLE_COLUMN:
o = new (arena) RenderTableCol(node);
break;
case TABLE_CELL:
o = new (arena) RenderTableCell(node);
break;
case TABLE_CAPTION:
o = new (arena) RenderBlock(node);
break;
}
return o;
}
RenderObject::RenderObject(DOM::NodeImpl* node)
: CachedObjectClient(),
m_style( 0 ),
m_node( node ),
m_parent( 0 ),
m_previous( 0 ),
m_next( 0 ),
m_verticalPosition( PositionUndefined ),
m_needsLayout( false ),
m_normalChildNeedsLayout( false ),
m_markedForRepaint( false ),
m_posChildNeedsLayout( false ),
m_minMaxKnown( false ),
m_floating( false ),
m_positioned( false ),
m_overhangingContents( false ),
m_relPositioned( false ),
m_paintBackground( false ),
m_isAnonymous( node->isDocumentNode() ),
m_recalcMinMax( false ),
m_isText( false ),
m_inline( true ),
m_attached( false ),
m_replaced( false ),
m_mouseInside( false ),
m_hasFirstLine( false ),
m_isSelectionBorder( false ),
m_isRoot( false ),
m_afterPageBreak( false ),
m_needsPageClear( false ),
m_containsPageBreak( false ),
m_hasOverflowClip( false ),
m_doNotDelete( false )
{
assert( node );
if (node->getDocument()->documentElement() == node) setIsRoot(true);
}
RenderObject::~RenderObject()
{
const BackgroundLayer* bgLayer = m_style->backgroundLayers();
while (bgLayer) {
if(bgLayer->backgroundImage())
bgLayer->backgroundImage()->deref(this);
bgLayer = bgLayer->next();
}
if (m_style)
m_style->deref();
}
RenderObject* RenderObject::objectBelow() const
{
RenderObject* obj = firstChild();
if ( !obj ) {
obj = nextSibling();
if ( !obj )
{
obj = parent();
while (obj && !obj->nextSibling())
obj = obj->parent();
if (obj)
obj = obj->nextSibling();
}
}
return obj;
}
RenderObject* RenderObject::objectAbove() const
{
RenderObject* obj = previousSibling();
if ( !obj )
return parent();
RenderObject* last = obj->lastChild();
while ( last )
{
obj = last;
last = last->lastChild();
}
return obj;
}
/*
bool RenderObject::isRoot() const
{
return !isAnonymous() &&
element()->getDocument()->documentElement() == element();
}*/
bool RenderObject::isHR() const
{
return element() && element()->id() == ID_HR;
}
bool RenderObject::isHTMLMarquee() const
{
return element() && element()->renderer() == this && element()->id() == ID_MARQUEE;
}
void RenderObject::addChild(RenderObject* , RenderObject *)
{
KHTMLAssert(0);
}
RenderObject* RenderObject::removeChildNode(RenderObject* )
{
KHTMLAssert(0);
return 0;
}
void RenderObject::removeChild(RenderObject *o )
{
setNeedsLayout(true);
removeChildNode( o );
}
void RenderObject::appendChildNode(RenderObject*)
{
KHTMLAssert(0);
}
void RenderObject::insertChildNode(RenderObject*, RenderObject*)
{
KHTMLAssert(0);
}
RenderObject *RenderObject::nextRenderer() const
{
if (firstChild())
return firstChild();
else if (nextSibling())
return nextSibling();
else {
const RenderObject *r = this;
while (r && !r->nextSibling())
r = r->parent();
if (r)
return r->nextSibling();
}
return 0;
}
RenderObject *RenderObject::previousRenderer() const
{
if (previousSibling()) {
RenderObject *r = previousSibling();
while (r->lastChild())
r = r->lastChild();
return r;
}
else if (parent()) {
return parent();
}
else {
return 0;
}
}
static void addLayers(RenderObject* obj, RenderLayer* parentLayer, RenderObject*& newObject,
RenderLayer*& beforeChild)
{
if (obj->layer()) {
if (!beforeChild && newObject) {
// We need to figure out the layer that follows newObject. We only do
// this the first time we find a child layer, and then we update the
// pointer values for newObject and beforeChild used by everyone else.
beforeChild = newObject->parent()->findNextLayer(parentLayer, newObject);
newObject = 0;
}
parentLayer->addChild(obj->layer(), beforeChild);
return;
}
for (RenderObject* curr = obj->firstChild(); curr; curr = curr->nextSibling())
addLayers(curr, parentLayer, newObject, beforeChild);
}
void RenderObject::addLayers(RenderLayer* parentLayer, RenderObject* newObject)
{
if (!parentLayer)
return;
RenderObject* object = newObject;
RenderLayer* beforeChild = 0;
::addLayers(this, parentLayer, object, beforeChild);
}
void RenderObject::removeLayers(RenderLayer* parentLayer)
{
if (!parentLayer)
return;
if (layer()) {
parentLayer->removeChild(layer());
return;
}
for (RenderObject* curr = firstChild(); curr; curr = curr->nextSibling())
curr->removeLayers(parentLayer);
}
void RenderObject::moveLayers(RenderLayer* oldParent, RenderLayer* newParent)
{
if (!newParent)
return;
if (layer()) {
if (oldParent)
oldParent->removeChild(layer());
newParent->addChild(layer());
return;
}
for (RenderObject* curr = firstChild(); curr; curr = curr->nextSibling())
curr->moveLayers(oldParent, newParent);
}
RenderLayer* RenderObject::findNextLayer(RenderLayer* parentLayer, RenderObject* startPoint,
bool checkParent)
{
// Error check the parent layer passed in. If it's null, we can't find anything.
if (!parentLayer)
return 0;
// Step 1: If our layer is a child of the desired parent, then return our layer.
RenderLayer* ourLayer = layer();
if (ourLayer && ourLayer->parent() == parentLayer)
return ourLayer;
// Step 2: If we don't have a layer, or our layer is the desired parent, then descend
// into our siblings trying to find the next layer whose parent is the desired parent.
if (!ourLayer || ourLayer == parentLayer) {
for (RenderObject* curr = startPoint ? startPoint->nextSibling() : firstChild();
curr; curr = curr->nextSibling()) {
RenderLayer* nextLayer = curr->findNextLayer(parentLayer, 0, false);
if (nextLayer)
return nextLayer;
}
}
// Step 3: If our layer is the desired parent layer, then we're finished. We didn't
// find anything.
if (parentLayer == ourLayer)
return 0;
// Step 4: If |checkParent| is set, climb up to our parent and check its siblings that
// follow us to see if we can locate a layer.
if (checkParent && parent())
return parent()->findNextLayer(parentLayer, this, true);
return 0;
}
RenderLayer* RenderObject::enclosingLayer() const
{
const RenderObject* curr = this;
while (curr) {
RenderLayer *layer = curr->layer();
if (layer)
return layer;
curr = curr->parent();
}
return 0;
}
RenderLayer* RenderObject::enclosingStackingContext() const
{
RenderLayer* l = enclosingLayer();
while (l && !l->isStackingContext())
l = l->parent();
return l;
}
int RenderObject::offsetLeft() const
{
if ( isPositioned() )
return xPos();
if ( isBody() && style()->htmlHacks() )
return 0;
int x = xPos();
if (isRelPositioned()) {
int y = 0;
static_cast<const RenderBox*>(this)->relativePositionOffset(x, y);
}
RenderObject* offsetPar = offsetParent();
for( RenderObject* curr = parent();
curr && curr != offsetPar;
curr = curr->parent() )
x += curr->xPos();
if ( offsetPar && offsetPar->isBody() && style()->htmlHacks() )
x += offsetPar->xPos();
return x;
}
int RenderObject::offsetTop() const
{
if ( isPositioned() )
return yPos();
if ( isBody() && style()->htmlHacks() )
return 0;
int y = yPos();
if (isRelPositioned()) {
int x = 0;
static_cast<const RenderBox*>(this)->relativePositionOffset(x, y);
}
RenderObject* offsetPar = offsetParent();
for( RenderObject* curr = parent();
curr && curr != offsetPar;
curr = curr->parent() )
y += curr->yPos();
if ( offsetPar && offsetPar->isBody() && style()->htmlHacks() )
y += offsetPar->yPos();
return y;
}
RenderObject* RenderObject::offsetParent() const
{
if (isBody())
return 0;
// can't really use containing blocks here (#113280)
bool skipTables = isPositioned() || isRelPositioned();
bool strict = !style()->htmlHacks();
RenderObject* curr = parent();
while (curr && (!curr->element() ||
(!curr->isPositioned() && !curr->isRelPositioned() &&
!(strict && skipTables ? curr->isRoot() : curr->isBody())))) {
if (!skipTables && curr->element() && (curr->isTableCell() || curr->isTable()))
break;
curr = curr->parent();
}
return curr;
}
// IE extensions.
// clientWidth and clientHeight represent the interior of an object
short RenderObject::clientWidth() const
{
return width() - borderLeft() - borderRight() -
(layer() ? layer()->verticalScrollbarWidth() : 0);
}
int RenderObject::clientHeight() const
{
return height() - borderTop() - borderBottom() -
(layer() ? layer()->horizontalScrollbarHeight() : 0);
}
// scrollWidth/scrollHeight is the size including the overflow area
short RenderObject::scrollWidth() const
{
return (hasOverflowClip() && layer()) ? layer()->scrollWidth() : overflowWidth() - overflowLeft();
}
int RenderObject::scrollHeight() const
{
return (hasOverflowClip() && layer()) ? layer()->scrollHeight() : overflowHeight() - overflowTop();
}
bool RenderObject::hasStaticX() const
{
return (style()->left().isVariable() && style()->right().isVariable());
}
bool RenderObject::hasStaticY() const
{
return (style()->top().isVariable() && style()->bottom().isVariable());
}
void RenderObject::setPixmap(const TQPixmap&, const TQRect& /*r*/, CachedImage* image)
{
//repaint bg when it finished loading
if(image && parent() && style() && style()->backgroundLayers()->containsImage(image)) {
isBody() ? canvas()->repaint() : repaint();
}
}
void RenderObject::setNeedsLayout(bool b, bool markParents)
{
bool alreadyNeededLayout = m_needsLayout;
m_needsLayout = b;
if (b) {
if (!alreadyNeededLayout && markParents && m_parent) {
dirtyFormattingContext( false );
markContainingBlocksForLayout();
}
}
else {
m_posChildNeedsLayout = false;
m_normalChildNeedsLayout = false;
}
}
void RenderObject::setChildNeedsLayout(bool b, bool markParents)
{
bool alreadyNeededLayout = m_normalChildNeedsLayout;
m_normalChildNeedsLayout = b;
if (b) {
if (!alreadyNeededLayout && markParents)
markContainingBlocksForLayout();
}
else {
m_posChildNeedsLayout = false;
m_normalChildNeedsLayout = false;
}
}
void RenderObject::markContainingBlocksForLayout()
{
RenderObject *o = container();
RenderObject *last = this;
while (o) {
if (!last->isText() && (last->style()->position() == FIXED || last->style()->position() == ABSOLUTE)) {
if (o->m_posChildNeedsLayout)
return;
o->m_posChildNeedsLayout = true;
}
else {
if (o->m_normalChildNeedsLayout)
return;
o->m_normalChildNeedsLayout = true;
}
last = o;
o = o->container();
}
last->scheduleRelayout();
}
RenderBlock *RenderObject::containingBlock() const
{
if(isTableCell())
return static_cast<RenderBlock*>( parent()->parent()->parent() );
if (isCanvas())
return const_cast<RenderBlock*>( static_cast<const RenderBlock*>(this) );
RenderObject *o = parent();
if(m_style->position() == FIXED) {
while ( o && !o->isCanvas() )
o = o->parent();
}
else if(m_style->position() == ABSOLUTE) {
while (o &&
( o->style()->position() == STATIC || ( o->isInline() && !o->isReplaced() ) ) && !o->isCanvas()) {
// for relpos inlines, return the nearest block - it will host the positioned objects list
if (o->isInline() && !o->isReplaced() && o->style()->position() == RELATIVE)
return o->containingBlock();
o = o->parent();
}
} else {
while(o && ( ( o->isInline() && !o->isReplaced() ) || o->isTableRow() || o->isTableSection() ||
o->isTableCol() || o->isFrameSet() ) )
o = o->parent();
}
// this is just to make sure we return a valid element.
// the case below should never happen...
if(!o || !o->isRenderBlock()) {
if(!isCanvas()) {
#ifndef NDEBUG
kdDebug( 6040 ) << this << ": " << renderName() << "(RenderObject): No containingBlock!" << endl;
kdDebug( 6040 ) << kdBacktrace() << endl;
const RenderObject* p = this;
while (p->parent()) p = p->parent();
p->printTree();
#endif
}
return 0L;
}
return static_cast<RenderBlock*>( o );
}
short RenderObject::containingBlockWidth() const
{
// ###
return containingBlock()->contentWidth();
}
int RenderObject::containingBlockHeight() const
{
// ###
return containingBlock()->contentHeight();
}
bool RenderObject::sizesToMaxWidth() const
{
// Marquees in WinIE are like a mixture of blocks and inline-blocks. They size as though they're blocks,
// but they allow text to sit on the same line as the marquee.
if (isFloating() || isCompact() ||
(isInlineBlockOrInlineTable() && !isHTMLMarquee()) ||
(element() && (element()->id() == ID_BUTTON || element()->id() == ID_LEGEND)))
return true;
// Children of a horizontal marquee do not fill the container by default.
// FIXME: Need to deal with MAUTO value properly. It could be vertical.
if (parent()->style()->overflowX() == OMARQUEE) {
EMarqueeDirection dir = parent()->style()->marqueeDirection();
if (dir == MAUTO || dir == MFORWARD || dir == MBACKWARD || dir == MLEFT || dir == MRIGHT)
return true;
}
#ifdef APPLE_CHANGES // ### what the heck is a flexbox?
// Flexible horizontal boxes lay out children at their maxwidths. Also vertical boxes
// that don't stretch their kids lay out their children at their maxwidths.
if (parent()->isFlexibleBox() &&
(parent()->style()->boxOrient() == HORIZONTAL || parent()->style()->boxAlign() != BSTRETCH))
return true;
#endif
return false;
}
// from Mozilla's nsCSSColorUtils.cpp
static int brightness(int red, int green, int blue)
{
int intensity = (red + green + blue) / 3;
int luminosity =
((RED_LUMINOSITY * red) / 100) +
((GREEN_LUMINOSITY * green) / 100) +
((BLUE_LUMINOSITY * blue) / 100);
return ((intensity * INTENSITY_FACTOR) +
(luminosity * LUMINOSITY_FACTOR)) / 100;
}
static void calc3DColor(TQColor &color, bool darken)
{
int rb = color.red();
int gb = color.green();
int bb = color.blue();
int brightness_ = brightness(rb,gb,bb);
int f0, f1;
if (brightness_ < COLOR_DARK_THRESHOLD) {
f0 = COLOR_DARK_BS_FACTOR;
f1 = COLOR_DARK_TS_FACTOR;
} else if (brightness_ > COLOR_LIGHT_THRESHOLD) {
f0 = COLOR_LITE_BS_FACTOR;
f1 = COLOR_LITE_TS_FACTOR;
} else {
f0 = COLOR_DARK_BS_FACTOR +
(brightness_ *
(COLOR_LITE_BS_FACTOR - COLOR_DARK_BS_FACTOR) / MAX_COLOR);
f1 = COLOR_DARK_TS_FACTOR +
(brightness_ *
(COLOR_LITE_TS_FACTOR - COLOR_DARK_TS_FACTOR) / MAX_COLOR);
}
if (darken) {
int r = rb - (f0 * rb / 100);
int g = gb - (f0 * gb / 100);
int b = bb - (f0 * bb / 100);
if ((r == rb) && (g == gb) && (b == bb))
color = (color == Qt::black) ? DARK_GRAY : Qt::black;
else
color.setRgb(r, g, b);
} else {
int r = kMin(rb + (f1 * (MAX_COLOR - rb) / 100), 255);
int g = kMin(gb + (f1 * (MAX_COLOR - gb) / 100), 255);
int b = kMin(bb + (f1 * (MAX_COLOR - bb) / 100), 255);
if ((r == rb) && (g == gb) && (b == bb))
color = (color == Qt::white) ? LIGHT_GRAY : Qt::white;
else
color.setRgb(r, g, b);
}
}
void RenderObject::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)
{
int width = (s==BSTop||s==BSBottom?y2-y1:x2-x1);
if(style == DOUBLE && width < 3)
style = SOLID;
if(!c.isValid()) {
if(invalidisInvert)
{
p->setRasterOp(Qt::XorROP);
c = Qt::white;
}
else {
if(style == INSET || style == OUTSET || style == RIDGE || style ==
GROOVE)
c = Qt::white;
else
c = textcolor;
}
}
switch(style)
{
case BNATIVE:
case BNONE:
case BHIDDEN:
// should not happen
if(invalidisInvert && p->rasterOp() == Qt::XorROP)
p->setRasterOp(Qt::CopyROP);
return;
case DOTTED:
if ( width == 1 ) {
// workaround Qt brokenness
p->setPen(TQPen(c, width, Qt::SolidLine));
switch(s) {
case BSBottom:
case BSTop:
for ( ; x1 < x2; x1 += 2 )
p->drawPoint( x1, y1 );
break;
case BSRight:
case BSLeft:
for ( ; y1 < y2; y1 += 2 )
p->drawPoint( x1, y1 );
}
break;
}
p->setPen(TQPen(c, width, Qt::DotLine));
/* nobreak; */
case DASHED:
if(style == DASHED)
p->setPen(TQPen(c, width == 1 ? 0 : width, width == 1 ? Qt::DotLine : Qt::DashLine));
if (width > 0)
switch(s) {
case BSBottom:
case BSTop:
p->drawLine(x1, (y1+y2)/2, x2, (y1+y2)/2);
break;
case BSRight:
case BSLeft:
p->drawLine((x1+x2)/2, y1, (x1+x2)/2, y2);
break;
}
break;
case DOUBLE:
{
int third = (width+1)/3;
if (adjbw1 == 0 && adjbw2 == 0)
{
p->setPen(Qt::NoPen);
p->setBrush(c);
switch(s)
{
case BSTop:
case BSBottom:
p->drawRect(x1, y1 , x2-x1, third);
p->drawRect(x1, y2-third, x2-x1, third);
break;
case BSLeft:
p->drawRect(x1 , y1+1, third, y2-y1-1);
p->drawRect(x2-third, y1+1, third, y2-y1-1);
break;
case BSRight:
p->drawRect(x1 , y1+1, third, y2-y1-1);
p->drawRect(x2-third, y1+1, third, y2-y1-1);
break;
}
}
else
{
int adjbw1bigthird;
if (adjbw1>0) adjbw1bigthird = adjbw1+1;
else adjbw1bigthird = adjbw1 - 1;
adjbw1bigthird /= 3;
int adjbw2bigthird;
if (adjbw2>0) adjbw2bigthird = adjbw2 + 1;
else adjbw2bigthird = adjbw2 - 1;
adjbw2bigthird /= 3;
switch(s)
{
case BSTop:
drawBorder(p, x1+kMax((-adjbw1*2+1)/3,0), y1 , x2-kMax((-adjbw2*2+1)/3,0), y1 + third, s, c, textcolor, SOLID, adjbw1bigthird, adjbw2bigthird);
drawBorder(p, x1+kMax(( adjbw1*2+1)/3,0), y2 - third, x2-kMax(( adjbw2*2+1)/3,0), y2 , s, c, textcolor, SOLID, adjbw1bigthird, adjbw2bigthird);
break;
case BSLeft:
drawBorder(p, x1 , y1+kMax((-adjbw1*2+1)/3,0), x1+third, y2-kMax((-adjbw2*2+1)/3,0), s, c, textcolor, SOLID, adjbw1bigthird, adjbw2bigthird);
drawBorder(p, x2 - third, y1+kMax(( adjbw1*2+1)/3,0), x2 , y2-kMax(( adjbw2*2+1)/3,0), s, c, textcolor, SOLID, adjbw1bigthird, adjbw2bigthird);
break;
case BSBottom:
drawBorder(p, x1+kMax(( adjbw1*2+1)/3,0), y1 , x2-kMax(( adjbw2*2+1)/3,0), y1+third, s, c, textcolor, SOLID, adjbw1bigthird, adjbw2bigthird);
drawBorder(p, x1+kMax((-adjbw1*2+1)/3,0), y2-third, x2-kMax((-adjbw2*2+1)/3,0), y2 , s, c, textcolor, SOLID, adjbw1bigthird, adjbw2bigthird);
break;
case BSRight:
drawBorder(p, x1 , y1+kMax(( adjbw1*2+1)/3,0), x1+third, y2-kMax(( adjbw2*2+1)/3,0), s, c, textcolor, SOLID, adjbw1bigthird, adjbw2bigthird);
drawBorder(p, x2-third, y1+kMax((-adjbw1*2+1)/3,0), x2 , y2-kMax((-adjbw2*2+1)/3,0), s, c, textcolor, SOLID, adjbw1bigthird, adjbw2bigthird);
break;
default:
break;
}
}
break;
}
case RIDGE:
case GROOVE:
{
EBorderStyle s1;
EBorderStyle s2;
if (style==GROOVE)
{
s1 = INSET;
s2 = OUTSET;
}
else
{
s1 = OUTSET;
s2 = INSET;
}
int adjbw1bighalf;
int adjbw2bighalf;
if (adjbw1>0) adjbw1bighalf=adjbw1+1;
else adjbw1bighalf=adjbw1-1;
adjbw1bighalf/=2;
if (adjbw2>0) adjbw2bighalf=adjbw2+1;
else adjbw2bighalf=adjbw2-1;
adjbw2bighalf/=2;
switch (s)
{
case BSTop:
drawBorder(p, x1+kMax(-adjbw1 ,0)/2, y1 , x2-kMax(-adjbw2,0)/2, (y1+y2+1)/2, s, c, textcolor, s1, adjbw1bighalf, adjbw2bighalf);
drawBorder(p, x1+kMax( adjbw1+1,0)/2, (y1+y2+1)/2, x2-kMax( adjbw2+1,0)/2, y2 , s, c, textcolor, s2, adjbw1/2, adjbw2/2);
break;
case BSLeft:
drawBorder(p, x1 , y1+kMax(-adjbw1 ,0)/2, (x1+x2+1)/2, y2-kMax(-adjbw2,0)/2, s, c, textcolor, s1, adjbw1bighalf, adjbw2bighalf);
drawBorder(p, (x1+x2+1)/2, y1+kMax( adjbw1+1,0)/2, x2 , y2-kMax( adjbw2+1,0)/2, s, c, textcolor, s2, adjbw1/2, adjbw2/2);
break;
case BSBottom:
drawBorder(p, x1+kMax( adjbw1 ,0)/2, y1 , x2-kMax( adjbw2,0)/2, (y1+y2+1)/2, s, c, textcolor, s2, adjbw1bighalf, adjbw2bighalf);
drawBorder(p, x1+kMax(-adjbw1+1,0)/2, (y1+y2+1)/2, x2-kMax(-adjbw2+1,0)/2, y2 , s, c, textcolor, s1, adjbw1/2, adjbw2/2);
break;
case BSRight:
drawBorder(p, x1 , y1+kMax( adjbw1 ,0)/2, (x1+x2+1)/2, y2-kMax( adjbw2,0)/2, s, c, textcolor, s2, adjbw1bighalf, adjbw2bighalf);
drawBorder(p, (x1+x2+1)/2, y1+kMax(-adjbw1+1,0)/2, x2 , y2-kMax(-adjbw2+1,0)/2, s, c, textcolor, s1, adjbw1/2, adjbw2/2);
break;
}
break;
}
case INSET:
case OUTSET:
calc3DColor(c, (style == OUTSET && (s == BSBottom || s == BSRight)) ||
(style == INSET && ( s == BSTop || s == BSLeft ) ) );
/* nobreak; */
case SOLID:
p->setPen(Qt::NoPen);
p->setBrush(c);
Q_ASSERT(x2>=x1);
Q_ASSERT(y2>=y1);
if (adjbw1==0 && adjbw2 == 0) {
p->drawRect(x1,y1,x2-x1,y2-y1);
return;
}
TQPointArray quad(4);
switch(s) {
case BSTop:
quad.setPoints(4,
x1+kMax(-adjbw1,0), y1,
x1+kMax( adjbw1,0), y2,
x2-kMax( adjbw2,0), y2,
x2-kMax(-adjbw2,0), y1);
break;
case BSBottom:
quad.setPoints(4,
x1+kMax( adjbw1,0), y1,
x1+kMax(-adjbw1,0), y2,
x2-kMax(-adjbw2,0), y2,
x2-kMax( adjbw2,0), y1);
break;
case BSLeft:
quad.setPoints(4,
x1, y1+kMax(-adjbw1,0),
x1, y2-kMax(-adjbw2,0),
x2, y2-kMax( adjbw2,0),
x2, y1+kMax( adjbw1,0));
break;
case BSRight:
quad.setPoints(4,
x1, y1+kMax( adjbw1,0),
x1, y2-kMax( adjbw2,0),
x2, y2-kMax(-adjbw2,0),
x2, y1+kMax(-adjbw1,0));
break;
}
p->drawConvexPolygon(quad);
break;
}
if(invalidisInvert && p->rasterOp() == Qt::XorROP)
p->setRasterOp(Qt::CopyROP);
}
void RenderObject::paintBorder(TQPainter *p, int _tx, int _ty, int w, int h, const RenderStyle* style, bool begin, bool end)
{
const TQColor& tc = style->borderTopColor();
const TQColor& bc = style->borderBottomColor();
const TQColor& lc = style->borderLeftColor();
const TQColor& rc = style->borderRightColor();
bool tt = style->borderTopIsTransparent();
bool bt = style->borderBottomIsTransparent();
bool rt = style->borderRightIsTransparent();
bool lt = style->borderLeftIsTransparent();
EBorderStyle ts = style->borderTopStyle();
EBorderStyle bs = style->borderBottomStyle();
EBorderStyle ls = style->borderLeftStyle();
EBorderStyle rs = style->borderRightStyle();
bool render_t = ts > BHIDDEN && !tt;
bool render_l = ls > BHIDDEN && begin && !lt;
bool render_r = rs > BHIDDEN && end && !rt;
bool render_b = bs > BHIDDEN && !bt;
if(render_t) {
bool ignore_left =
(tc == lc) && (tt == lt) &&
(ts >= OUTSET) &&
(ls == DOTTED || ls == DASHED || ls == SOLID || ls == OUTSET);
bool ignore_right =
(tc == rc) && (tt == rt) &&
(ts >= OUTSET) &&
(rs == DOTTED || rs == DASHED || rs == SOLID || rs == INSET);
drawBorder(p, _tx, _ty, _tx + w, _ty + style->borderTopWidth(), BSTop, tc, style->color(), ts,
ignore_left?0:style->borderLeftWidth(),
ignore_right?0:style->borderRightWidth());
}
if(render_b) {
bool ignore_left =
(bc == lc) && (bt == lt) &&
(bs >= OUTSET) &&
(ls == DOTTED || ls == DASHED || ls == SOLID || ls == OUTSET);
bool ignore_right =
(bc == rc) && (bt == rt) &&
(bs >= OUTSET) &&
(rs == DOTTED || rs == DASHED || rs == SOLID || rs == INSET);
drawBorder(p, _tx, _ty + h - style->borderBottomWidth(), _tx + w, _ty + h, BSBottom, bc, style->color(), bs,
ignore_left?0:style->borderLeftWidth(),
ignore_right?0:style->borderRightWidth());
}
if(render_l)
{
bool ignore_top =
(tc == lc) && (tt == lt) &&
(ls >= OUTSET) &&
(ts == DOTTED || ts == DASHED || ts == SOLID || ts == OUTSET);
bool ignore_bottom =
(bc == lc) && (bt == lt) &&
(ls >= OUTSET) &&
(bs == DOTTED || bs == DASHED || bs == SOLID || bs == INSET);
drawBorder(p, _tx, _ty, _tx + style->borderLeftWidth(), _ty + h, BSLeft, lc, style->color(), ls,
ignore_top?0:style->borderTopWidth(),
ignore_bottom?0:style->borderBottomWidth());
}
if(render_r)
{
bool ignore_top =
(tc == rc) && (tt == rt) &&
(rs >= DOTTED || rs == INSET) &&
(ts == DOTTED || ts == DASHED || ts == SOLID || ts == OUTSET);
bool ignore_bottom =
(bc == rc) && (bt == rt) &&
(rs >= DOTTED || rs == INSET) &&
(bs == DOTTED || bs == DASHED || bs == SOLID || bs == INSET);
drawBorder(p, _tx + w - style->borderRightWidth(), _ty, _tx + w, _ty + h, BSRight, rc, style->color(), rs,
ignore_top?0:style->borderTopWidth(),
ignore_bottom?0:style->borderBottomWidth());
}
}
void RenderObject::paintOutline(TQPainter *p, int _tx, int _ty, int w, int h, const RenderStyle* style)
{
int ow = style->outlineWidth();
if(!ow) return;
const TQColor& oc = style->outlineColor();
EBorderStyle os = style->outlineStyle();
int offset = style->outlineOffset();
#ifdef APPLE_CHANGES
if (style->outlineStyleIsAuto()) {
p->initFocusRing(ow, offset, oc);
addFocusRingRects(p, _tx, _ty);
p->drawFocusRing();
p->clearFocusRing();
return;
}
#endif
_tx -= offset;
_ty -= offset;
w += 2*offset;
h += 2*offset;
drawBorder(p, _tx-ow, _ty-ow, _tx, _ty+h+ow, BSLeft,
TQColor(oc), style->color(),
os, ow, ow, true);
drawBorder(p, _tx-ow, _ty-ow, _tx+w+ow, _ty, BSTop,
TQColor(oc), style->color(),
os, ow, ow, true);
drawBorder(p, _tx+w, _ty-ow, _tx+w+ow, _ty+h+ow, BSRight,
TQColor(oc), style->color(),
os, ow, ow, true);
drawBorder(p, _tx-ow, _ty+h, _tx+w+ow, _ty+h+ow, BSBottom,
TQColor(oc), style->color(),
os, ow, ow, true);
}
void RenderObject::paint( PaintInfo&, int /*tx*/, int /*ty*/)
{
}
void RenderObject::repaintRectangle(int x, int y, int w, int h, Priority p, bool f)
{
if(parent()) parent()->repaintRectangle(x, y, w, h, p, f);
}
#ifdef ENABLE_DUMP
TQString RenderObject::information() const
{
TQString str;
int x; int y;
absolutePosition(x,y);
x += inlineXPos();
y += inlineYPos();
TQTextStream ts( &str, IO_WriteOnly );
ts << renderName()
<< "(" << (style() ? style()->refCount() : 0) << ")"
<< ": " << (void*)this << " ";
ts << "{" << x << " " << y << "} ";
if (isInline()) ts << "il ";
if (childrenInline()) ts << "ci ";
if (isFloating()) ts << "fl ";
if (isAnonymous()) ts << "an ";
if (isRelPositioned()) ts << "rp ";
if (isPositioned()) ts << "ps ";
if (isReplaced()) ts << "rp ";
if (overhangingContents()) ts << "oc ";
if (needsLayout()) ts << "nl ";
if (minMaxKnown()) ts << "mmk ";
if (m_recalcMinMax) ts << "rmm ";
if (mouseInside()) ts << "mi ";
if (style() && style()->zIndex()) ts << "zI: " << style()->zIndex();
if (style() && style()->hasAutoZIndex()) ts << "zI: auto ";
if (element()) {
if (element()->active()) ts << "act ";
if (element()->hasAnchor()) ts << "anchor ";
if (element()->focused()) ts << "focus ";
ts << " <" << getTagName(element()->id()) << ">";
} else if (isPseudoAnonymous() && style() && style()->styleType() != RenderStyle::NOPSEUDO) {
ts << " <" << getTagName(node()->id());
TQString pseudo;
switch (style()->styleType()) {
case RenderStyle::FIRST_LETTER:
pseudo = ":first-letter"; break;
case RenderStyle::BEFORE:
pseudo = ":before"; break;
case RenderStyle::AFTER:
pseudo = ":after"; break;
default:
pseudo = ":pseudo-element";
}
ts << pseudo;
ts << ">";
}
ts << " (" << xPos() << "," << yPos() << "," << width() << "," << height() << ")"
<< " [" << minWidth() << "-" << maxWidth() << "]"
<< " { mT: " << marginTop() << " qT: " << isTopMarginQuirk()
<< " mB: " << marginBottom() << " qB: " << isBottomMarginQuirk()
<< "}"
<< (isTableCell() ?
( TQString::fromLatin1(" [r=") +
TQString::number( static_cast<const RenderTableCell *>(this)->row() ) +
TQString::fromLatin1(" c=") +
TQString::number( static_cast<const RenderTableCell *>(this)->col() ) +
TQString::fromLatin1(" rs=") +
TQString::number( static_cast<const RenderTableCell *>(this)->rowSpan() ) +
TQString::fromLatin1(" cs=") +
TQString::number( static_cast<const RenderTableCell *>(this)->colSpan() ) +
TQString::fromLatin1("]") ) : TQString::null );
if ( layer() )
ts << " layer=" << layer();
if ( continuation() )
ts << " continuation=" << continuation();
if (isText())
ts << " \"" << TQConstString(static_cast<const RenderText *>(this)->text(), kMin(static_cast<const RenderText *>(this)->length(), 10u)).string() << "\"";
return str;
}
void RenderObject::printTree(int indent) const
{
TQString ind;
ind.fill(' ', indent);
kdDebug() << ind << information() << endl;
RenderObject *child = firstChild();
while( child != 0 )
{
child->printTree(indent+2);
child = child->nextSibling();
}
}
static TQTextStream &operator<<(TQTextStream &ts, const TQRect &r)
{
return ts << "at (" << r.x() << "," << r.y() << ") size " << r.width() << "x" << r.height();
}
//A bit like getTagName, but handles XML, too.
static TQString lookupTagName(NodeImpl* node) {
return node->getDocument()->getName(NodeImpl::ElementId, node->id()).string();
}
void RenderObject::dump(TQTextStream &ts, const TQString &ind) const
{
if ( !layer() )
ts << endl;
ts << ind << renderName();
if (style() && style()->zIndex()) {
ts << " zI: " << style()->zIndex();
}
if (element()) {
TQString tagName(lookupTagName(element()));
if (!tagName.isEmpty()) {
ts << " {" << tagName << "}";
}
} else if (isPseudoAnonymous() && style() && style()->styleType() != RenderStyle::NOPSEUDO) {
TQString pseudo;
TQString tagName(lookupTagName(node()));
switch (style()->styleType()) {
case RenderStyle::FIRST_LETTER:
pseudo = ":first-letter"; break;
case RenderStyle::BEFORE:
pseudo = ":before"; break;
case RenderStyle::AFTER:
pseudo = ":after"; break;
default:
pseudo = ":pseudo-element";
}
ts << " {" << tagName << pseudo << "}";
}
TQRect r(xPos(), yPos(), width(), height());
ts << " " << r;
if ( parent() )
ts << style()->createDiff( *parent()->style() );
if (isAnonymous()) { ts << " anonymousBox"; }
if (isFloating()) { ts << " floating"; }
if (isPositioned()) { ts << " positioned"; }
if (isRelPositioned()) { ts << " relPositioned"; }
if (isText()) { ts << " text"; }
if (isInline()) { ts << " inline"; }
if (isReplaced()) { ts << " replaced"; }
if (shouldPaintBackgroundOrBorder()) { ts << " paintBackground"; }
if (needsLayout()) { ts << " needsLayout"; }
if (minMaxKnown()) { ts << " minMaxKnown"; }
if (overhangingContents()) { ts << " overhangingContents"; }
if (hasFirstLine()) { ts << " hasFirstLine"; }
if (afterPageBreak()) { ts << " afterPageBreak"; }
}
#endif
void RenderObject::selectionStartEnd(int& spos, int& epos)
{
if (parent())
parent()->selectionStartEnd(spos, epos);
}
void RenderObject::setStyle(RenderStyle *style)
{
if (m_style == style)
return;
RenderStyle::Diff d = m_style ? m_style->diff( style ) : RenderStyle::Layout;
//qDebug("m_style: %p new style, diff=%d", m_style, d);
Priority pri = NormalPriority;
if (m_style) {
pri = HighPriority;
if ( d >= RenderStyle::Visible && !isText() && m_parent &&
( d == RenderStyle::Position ||
m_style->outlineWidth() > style->outlineWidth() ||
(!m_style->hidesOverflow() && style->hidesOverflow()) ||
( m_style->hasClip() && !(m_style->clip() == style->clip()) ) ) ) {
// schedule a repaint with the old style
if (layer() && !isInlineFlow())
layer()->repaint(pri);
else
repaint(pri);
}
if ( ( isFloating() && m_style->floating() != style->floating() ) ||
( isPositioned() && m_style->position() != style->position() &&
style->position() != ABSOLUTE && style->position() != FIXED ) )
removeFromObjectLists();
if ( layer() ) {
if ( ( m_style->hasAutoZIndex() != style->hasAutoZIndex() ||
m_style->zIndex() != style->zIndex() ||
m_style->visibility() != style->visibility() ) ) {
layer()->stackingContext()->dirtyZOrderLists();
layer()->dirtyZOrderLists();
}
}
// reset style flags
m_floating = false;
m_positioned = false;
m_relPositioned = false;
m_paintBackground = false;
m_hasOverflowClip = false;
}
// only honour z-index for non-static objects
// ### and objects with opacity
if ( style->position() == STATIC ) {
if ( isRoot() )
style->setZIndex( 0 );
else
style->setHasAutoZIndex();
}
RenderStyle *oldStyle = m_style;
m_style = style;
updateBackgroundImages(oldStyle);
m_style->ref();
if (oldStyle)
oldStyle->deref();
setShouldPaintBackgroundOrBorder(m_style->hasBorder() || m_style->hasBackground());
m_hasFirstLine = (style->getPseudoStyle(RenderStyle::FIRST_LINE) != 0);
if (m_parent) {
if (d == RenderStyle::Position && !attemptDirectLayerTranslation())
d = RenderStyle::Layout;
if ( d > RenderStyle::Position) {
// we must perform a full layout
if (!isText() && d == RenderStyle::CbLayout) {
dirtyFormattingContext( true );
}
setNeedsLayoutAndMinMaxRecalc();
} else if (!isText() && d >= RenderStyle::Visible) {
// a repaint is enough
if (layer()) {
if (canvas() && canvas()->needsWidgetMasks()) {
// update our widget masks
RenderLayer *p, *d = 0;
for (p=layer()->parent();p;p=p->parent())
if (p->hasOverlaidWidgets()) d=p;
if (d) // deepest
d->updateWidgetMasks( canvas()->layer() );
}
}
if (layer() && !isInlineFlow())
layer()->repaint(pri);
else
repaint(pri);
}
}
}
bool RenderObject::attemptDirectLayerTranslation()
{
// When the difference between two successive styles is only 'Position'
// we may attempt to save a layout by directly updating the object position.
KHTMLAssert( m_style->position() != STATIC );
if (!layer())
return false;
setInline(m_style->isDisplayInlineType());
setPositioned(m_style->position() != RELATIVE);
setRelPositioned(m_style->position() == RELATIVE);
int oldXPos = xPos();
int oldYPos = yPos();
int oldWidth = width();
int oldHeight = height();
calcWidth();
calcHeight();
if (oldWidth != width() || oldHeight != height()) {
// implicit size change or overconstrained dimensions:
// we'll need a layout.
setWidth(oldWidth);
setHeight(oldHeight);
// kdDebug() << "Layer translation failed for " << information() << endl;
return false;
}
layer()->updateLayerPosition();
if (m_style->position() != FIXED) {
bool needsDocSizeUpdate = true;
RenderObject *cb = container();
while (cb) {
if (cb->hasOverflowClip() && cb->layer()) {
cb->layer()->checkScrollbarsAfterLayout();
needsDocSizeUpdate = false;
break;
}
cb = cb->container();
}
if (needsDocSizeUpdate && canvas()) {
bool posXOffset = (xPos()-oldXPos >= 0);
bool posYOffset = (yPos()-oldYPos >= 0);
canvas()->updateDocSizeAfterLayerTranslation(this, posXOffset, posYOffset);
}
}
// success
return true;
}
void RenderObject::dirtyFormattingContext( bool checkContainer )
{
if (m_markedForRepaint && !checkContainer)
return;
m_markedForRepaint = true;
if (layer() && (style()->position() == FIXED || style()->position() == ABSOLUTE))
return;
if (m_parent && (checkContainer || style()->width().isVariable() || style()->height().isVariable() ||
!(isFloating() || flowAroundFloats() || isTableCell())))
m_parent->dirtyFormattingContext(false);
}
void RenderObject::repaintDuringLayout()
{
if (canvas()->needsFullRepaint() || isText())
return;
if (layer() && !isInlineFlow()) {
layer()->repaint( NormalPriority, true );
} else {
repaint();
canvas()->deferredRepaint( this );
}
}
void RenderObject::setOverhangingContents(bool p)
{
if (m_overhangingContents == p)
return;
RenderBlock *cb = containingBlock();
if (p)
{
m_overhangingContents = true;
KHTMLAssert( cb != this || isCanvas());
if (cb && cb != this)
cb->setOverhangingContents();
}
else
{
RenderObject *n;
bool c=false;
for( n = firstChild(); n != 0; n = n->nextSibling() )
{
if (n->isPositioned() || n->overhangingContents())
c=true;
}
if (c)
return;
else
{
m_overhangingContents = false;
KHTMLAssert( cb != this );
if (cb && cb != this)
cb->setOverhangingContents(false);
}
}
}
void RenderObject::updateBackgroundImages(RenderStyle* oldStyle)
{
// FIXME: This will be slow when a large number of images is used. Fix by using a dict.
const BackgroundLayer* oldLayers = oldStyle ? oldStyle->backgroundLayers() : 0;
const BackgroundLayer* newLayers = m_style ? m_style->backgroundLayers() : 0;
for (const BackgroundLayer* currOld = oldLayers; currOld; currOld = currOld->next()) {
if (currOld->backgroundImage() && (!newLayers || !newLayers->containsImage(currOld->backgroundImage())))
currOld->backgroundImage()->deref(this);
}
for (const BackgroundLayer* currNew = newLayers; currNew; currNew = currNew->next()) {
if (currNew->backgroundImage() && (!oldLayers || !oldLayers->containsImage(currNew->backgroundImage())))
currNew->backgroundImage()->ref(this);
}
}
TQRect RenderObject::viewRect() const
{
return containingBlock()->viewRect();
}
bool RenderObject::absolutePosition(int &xPos, int &yPos, bool f) const
{
RenderObject* p = parent();
if (p) {
p->absolutePosition(xPos, yPos, f);
if ( p->hasOverflowClip() )
p->layer()->subtractScrollOffset( xPos, yPos );
return true;
}
else
{
xPos = yPos = 0;
return false;
}
}
void RenderObject::caretPos(int /*offset*/, int /*flags*/, int &_x, int &_y, int &width, int &height)
{
_x = _y = height = -1;
width = 1; // the caret has a default width of one pixel. If you want
// to check for validity, only test the x-coordinate for >= 0.
}
int RenderObject::paddingTop() const
{
int w = 0;
Length padding = m_style->paddingTop();
if (padding.isPercent())
w = containingBlock()->contentWidth();
w = padding.minWidth(w);
if ( isTableCell() && padding.isVariable() )
w = static_cast<const RenderTableCell *>(this)->table()->cellPadding();
return w;
}
int RenderObject::paddingBottom() const
{
int w = 0;
Length padding = style()->paddingBottom();
if (padding.isPercent())
w = containingBlock()->contentWidth();
w = padding.minWidth(w);
if ( isTableCell() && padding.isVariable() )
w = static_cast<const RenderTableCell *>(this)->table()->cellPadding();
return w;
}
int RenderObject::paddingLeft() const
{
int w = 0;
Length padding = style()->paddingLeft();
if (padding.isPercent())
w = containingBlock()->contentWidth();
w = padding.minWidth(w);
if ( isTableCell() && padding.isVariable() )
w = static_cast<const RenderTableCell *>(this)->table()->cellPadding();
return w;
}
int RenderObject::paddingRight() const
{
int w = 0;
Length padding = style()->paddingRight();
if (padding.isPercent())
w = containingBlock()->contentWidth();
w = padding.minWidth(w);
if ( isTableCell() && padding.isVariable() )
w = static_cast<const RenderTableCell *>(this)->table()->cellPadding();
return w;
}
RenderObject *RenderObject::container() const
{
// This method is extremely similar to containingBlock(), but with a few notable
// exceptions.
// (1) It can be used on orphaned subtrees, i.e., it can be called safely even when
// the object is not part of the primary document subtree yet.
// (2) For normal flow elements, it just returns the parent.
// (3) For absolute positioned elements, it will return a relative positioned inline.
// containingBlock() simply skips relpositioned inlines and lets an enclosing block handle
// the layout of the positioned object. This does mean that calcAbsoluteHorizontal and
// calcAbsoluteVertical have to use container().
EPosition pos = m_style->position();
RenderObject *o = 0;
if( pos == FIXED ) {
// container() can be called on an object that is not in the
// tree yet. We don't call canvas() since it will assert if it
// can't get back to the canvas. Instead we just walk as high up
// as we can. If we're in the tree, we'll get the root. If we
// aren't we'll get the root of our little subtree (most likely
// we'll just return 0).
o = parent();
while ( o && o->parent() ) o = o->parent();
}
else if ( pos == ABSOLUTE ) {
// Same goes here. We technically just want our containing block, but
// we may not have one if we're part of an uninstalled subtree. We'll
// climb as high as we can though.
o = parent();
while (o && o->style()->position() == STATIC && !o->isCanvas())
o = o->parent();
}
else
o = parent();
return o;
}
DOM::DocumentImpl* RenderObject::document() const
{
return m_node->getDocument();
}
void RenderObject::remove()
{
if ( parent() )
//have parent, take care of the tree integrity
parent()->removeChild(this);
}
void RenderObject::removeFromObjectLists()
{
// in destruction mode, don't care.
if ( !document()->renderer() ) return;
if (isFloating()) {
RenderBlock* outermostBlock = containingBlock();
for (RenderBlock* p = outermostBlock; p && !p->isCanvas() && p->containsFloat(this);) {
outermostBlock = p;
if (p->isFloatingOrPositioned())
break;
p = p->containingBlock();
}
if (outermostBlock)
outermostBlock->markAllDescendantsWithFloatsForLayout(this);
}
if (isPositioned()) {
RenderObject *p;
for (p = parent(); p; p = p->parent()) {
if (p->isRenderBlock())
static_cast<RenderBlock*>(p)->removePositionedObject(this);
}
}
}
RenderArena* RenderObject::renderArena() const
{
return m_node->getDocument()->renderArena();
}
void RenderObject::detach()
{
detachCounters();
deleteInlineBoxes();
remove();
// make sure our DOM-node don't think we exist
if ( node() && node()->renderer() == this)
node()->setRenderer(0);
// by default no refcounting
arenaDelete(renderArena(), this);
}
void RenderObject::arenaDelete(RenderArena *arena, void *base)
{
#ifndef NDEBUG
void *savedBase = baseOfRenderObjectBeingDeleted;
baseOfRenderObjectBeingDeleted = base;
#endif
delete this;
#ifndef NDEBUG
baseOfRenderObjectBeingDeleted = savedBase;
#endif
// Recover the size left there for us by operator delete and free the memory.
arena->free(*(size_t *)base, base);
}
void RenderObject::arenaDelete(RenderArena *arena)
{
// static_cast unfortunately doesn't work, since we multiple inherit
// in eg. RenderWidget.
arenaDelete(arena, dynamic_cast<void *>(this));
}
FindSelectionResult RenderObject::checkSelectionPoint( int _x, int _y, int _tx, int _ty, DOM::NodeImpl*& node, int & offset, SelPointState &state )
{
#if 0
NodeInfo info(true, false);
if ( nodeAtPoint( info, _x, _y, _tx, _ty ) && info.innerNode() )
{
RenderObject* r = info.innerNode()->renderer();
if ( r ) {
if ( r == this ) {
node = info.innerNode();
offset = 0; // we have no text...
return SelectionPointInside;
}
else
return r->checkSelectionPoint( _x, _y, _tx, _ty, node, offset, state );
}
}
//kdDebug(6030) << "nodeAtPoint Failed. Fallback - hmm, SelectionPointAfter" << endl;
node = 0;
offset = 0;
return SelectionPointAfter;
#endif
int off = offset;
DOM::NodeImpl* nod = node;
for (RenderObject *child = firstChild(); child; child=child->nextSibling()) {
// ignore empty text boxes, they produce totally bogus information
// for caret navigation (LS)
if (child->isText() && !static_cast<RenderText *>(child)->inlineTextBoxCount())
continue;
// kdDebug(6040) << "iterating " << (child ? child->renderName() : "") << "@" << child << (child->isText() ? " contains: \"" + TQConstString(static_cast<RenderText *>(child)->text(), kMin(static_cast<RenderText *>(child)->length(), 10u)).string() + "\"" : TQString::null) << endl;
// kdDebug(6040) << "---------- checkSelectionPoint recursive -----------" << endl;
khtml::FindSelectionResult pos = child->checkSelectionPoint(_x, _y, _tx+xPos(), _ty+yPos(), nod, off, state);
// kdDebug(6040) << "-------- end checkSelectionPoint recursive ---------" << endl;
// kdDebug(6030) << this << " child->findSelectionNode returned result=" << pos << " nod=" << nod << " off=" << off << endl;
switch(pos) {
case SelectionPointBeforeInLine:
case SelectionPointInside:
//kdDebug(6030) << "RenderObject::checkSelectionPoint " << this << " returning SelectionPointInside offset=" << offset << endl;
node = nod;
offset = off;
return SelectionPointInside;
case SelectionPointBefore:
//x,y is before this element -> stop here
if ( state.m_lastNode ) {
node = state.m_lastNode;
offset = state.m_lastOffset;
//kdDebug(6030) << "RenderObject::checkSelectionPoint " << this << " before this child "
// << node << "-> returning SelectionPointInside, offset=" << offset << endl;
return SelectionPointInside;
} else {
node = nod;
offset = off;
//kdDebug(6030) << "RenderObject::checkSelectionPoint " << this << " before us -> returning SelectionPointBefore " << node << "/" << offset << endl;
return SelectionPointBefore;
}
break;
case SelectionPointAfter:
if (state.m_afterInLine) break;
// fall through
case SelectionPointAfterInLine:
if (pos == SelectionPointAfterInLine) state.m_afterInLine = true;
//kdDebug(6030) << "RenderObject::checkSelectionPoint: selection after: " << nod << " offset: " << off << " afterInLine: " << state.m_afterInLine << endl;
state.m_lastNode = nod;
state.m_lastOffset = off;
// No "return" here, obviously. We must keep looking into the children.
break;
}
}
// If we are after the last child, return lastNode/lastOffset
// But lastNode can be 0L if there is no child, for instance.
if ( state.m_lastNode )
{
node = state.m_lastNode;
offset = state.m_lastOffset;
}
//kdDebug(6030) << "fallback - SelectionPointAfter node=" << node << " offset=" << offset << endl;
return SelectionPointAfter;
}
bool RenderObject::mouseInside() const
{
if (!m_mouseInside && continuation())
return continuation()->mouseInside();
return m_mouseInside;
}
bool RenderObject::nodeAtPoint(NodeInfo& info, int _x, int _y, int _tx, int _ty, HitTestAction hitTestAction, bool inside)
{
int tx = _tx + xPos();
int ty = _ty + yPos();
inside |= ( style()->visibility() != HIDDEN &&
(_y >= ty) && (_y < ty + height()) && (_x >= tx) && (_x < tx + width())) || isRoot() || isBody();
bool inOverflowRect = inside;
if ( !inOverflowRect ) {
int ol = overflowLeft();
int ot = overflowTop();
TQRect overflowRect( tx+ol, ty+ot, overflowWidth()-ol, overflowHeight()-ot );
inOverflowRect = overflowRect.contains( _x, _y );
}
// ### table should have its own, more performant method
if (hitTestAction != HitTestSelfOnly &&
(( !isRenderBlock() ||
!static_cast<RenderBlock*>( this )->isPointInScrollbar( _x, _y, _tx, _ty )) &&
(overhangingContents() || inOverflowRect || isInline() || isRoot() || isCanvas() ||
isTableRow() || isTableSection() || inside || mouseInside() ))) {
if ( hitTestAction == HitTestChildrenOnly )
inside = false;
if ( hasOverflowClip() && layer() )
layer()->subtractScrollOffset(tx, ty);
for (RenderObject* child = lastChild(); child; child = child->previousSibling())
if (!child->layer() && child->nodeAtPoint(info, _x, _y, tx, ty, HitTestAll))
inside = true;
}
if (inside)
setInnerNode(info);
return inside;
}
void RenderObject::setInnerNode(NodeInfo& info)
{
if (!info.innerNode() && !isInline() && continuation()) {
// We are in the margins of block elements that are part of a continuation. In
// this case we're actually still inside the enclosing inline element that was
// split. Go ahead and set our inner node accordingly.
info.setInnerNode(continuation()->element());
if (!info.innerNonSharedNode())
info.setInnerNonSharedNode(continuation()->element());
}
if (!info.innerNode() && element())
info.setInnerNode(element());
if(!info.innerNonSharedNode() && element())
info.setInnerNonSharedNode(element());
}
short RenderObject::verticalPositionHint( bool firstLine ) const
{
short vpos = m_verticalPosition;
if ( m_verticalPosition == PositionUndefined || firstLine ) {
vpos = getVerticalPosition( firstLine );
if ( !firstLine )
const_cast<RenderObject *>(this)->m_verticalPosition = vpos;
}
return vpos;
}
short RenderObject::getVerticalPosition( bool firstLine, RenderObject* ref ) const
{
// vertical align for table cells has a different meaning
int vpos = 0;
if ( !isTableCell() && isInline() ) {
EVerticalAlign va = style()->verticalAlign();
if ( va == TOP ) {
vpos = PositionTop;
} else if ( va == BOTTOM ) {
vpos = PositionBottom;
} else {
if (!ref) ref = parent();
bool checkParent = ref->isInline() && !ref->isReplacedBlock() &&
!( ref->style()->verticalAlign() == TOP || ref->style()->verticalAlign() == BOTTOM );
vpos = checkParent ? ref->verticalPositionHint( firstLine ) : 0;
// don't allow elements nested inside text-top to have a different valignment.
if ( va == BASELINE )
return vpos;
else if ( va == LENGTH )
return vpos - style()->verticalAlignLength().width( lineHeight( firstLine ) );
const TQFont &f = ref->font( firstLine );
int fontsize = f.pixelSize();
if ( va == SUB )
vpos += fontsize/5 + 1;
else if ( va == SUPER )
vpos -= fontsize/3 + 1;
else if ( va == TEXT_TOP ) {
vpos += baselinePosition( firstLine ) - (TQFontMetrics(f).ascent() + TQFontMetrics(f).leading()/2);
} else if ( va == MIDDLE ) {
TQRect b = TQFontMetrics(f).boundingRect('x');
vpos += -b.height()/2 - lineHeight( firstLine )/2 + baselinePosition( firstLine );
} else if ( va == TEXT_BOTTOM ) {
vpos += TQFontMetrics(f).descent() + TQFontMetrics(f).leading()/2;
if ( !isReplaced() )
vpos -= fontMetrics(firstLine).descent();
} else if ( va == BASELINE_MIDDLE )
vpos += - lineHeight( firstLine )/2 + baselinePosition( firstLine );
}
}
return vpos;
}
short RenderObject::lineHeight( bool firstLine ) const
{
// Inline blocks are replaced elements. Otherwise, just pass off to
// the base class. If we're being queried as though we're the root line
// box, then the fact that we're an inline-block is irrelevant, and we behave
// just like a block.
if (isReplaced() && (!isInlineBlockOrInlineTable() || !needsLayout()))
return height()+marginTop()+marginBottom();
Length lh;
if( firstLine && hasFirstLine() ) {
RenderStyle *pseudoStyle = style()->getPseudoStyle(RenderStyle::FIRST_LINE);
if ( pseudoStyle )
lh = pseudoStyle->lineHeight();
}
else
lh = style()->lineHeight();
// its "unset", choose nice default
if ( lh.value() < 0 )
return style()->fontMetrics().lineSpacing();
if ( lh.isPercent() )
return lh.minWidth( style()->font().pixelSize() );
// its fixed
return lh.value();
}
short RenderObject::baselinePosition( bool firstLine ) const
{
// Inline blocks are replaced elements. Otherwise, just pass off to
// the base class. If we're being queried as though we're the root line
// box, then the fact that we're an inline-block is irrelevant, and we behave
// just like a block.
if (isReplaced() && (!isInlineBlockOrInlineTable() || !needsLayout()))
return height()+marginTop()+marginBottom();
const TQFontMetrics &fm = fontMetrics( firstLine );
return fm.ascent() + ( lineHeight( firstLine) - fm.height() ) / 2;
}
void RenderObject::invalidateVerticalPositions()
{
m_verticalPosition = PositionUndefined;
RenderObject *child = firstChild();
while( child ) {
child->invalidateVerticalPositions();
child = child->nextSibling();
}
}
void RenderObject::recalcMinMaxWidths()
{
KHTMLAssert( m_recalcMinMax );
#ifdef DEBUG_LAYOUT
kdDebug( 6040 ) << renderName() << " recalcMinMaxWidths() this=" << this <<endl;
#endif
RenderObject *child = firstChild();
int cmin=0;
int cmax=0;
while( child ) {
bool test = false;
if ( ( m_minMaxKnown && child->m_recalcMinMax ) || !child->m_minMaxKnown ) {
cmin = child->minWidth();
cmax = child->maxWidth();
test = true;
}
if ( child->m_recalcMinMax )
child->recalcMinMaxWidths();
if ( !child->m_minMaxKnown )
child->calcMinMaxWidth();
if ( m_minMaxKnown && test && (cmin != child->minWidth() || cmax != child->maxWidth()) )
m_minMaxKnown = false;
child = child->nextSibling();
}
// we need to recalculate, if the contains inline children, as the change could have
// happened somewhere deep inside the child tree
if ( ( !isInline() || isReplacedBlock() ) && childrenInline() )
m_minMaxKnown = false;
if ( !m_minMaxKnown )
calcMinMaxWidth();
m_recalcMinMax = false;
}
void RenderObject::scheduleRelayout(RenderObject *clippedObj)
{
if (!isCanvas()) return;
KHTMLView *view = static_cast<RenderCanvas *>(this)->view();
if ( view )
view->scheduleRelayout(clippedObj);
}
void RenderObject::removeLeftoverAnonymousBoxes()
{
}
InlineBox* RenderObject::createInlineBox(bool /*makePlaceHolderBox*/, bool /*isRootLineBox*/)
{
KHTMLAssert(false);
return 0;
}
void RenderObject::getTextDecorationColors(int decorations, TQColor& underline, TQColor& overline,
TQColor& linethrough, bool quirksMode)
{
RenderObject* curr = this;
do {
RenderStyle *st = curr->style();
int currDecs = st->textDecoration();
if (currDecs) {
if (currDecs & UNDERLINE) {
decorations &= ~UNDERLINE;
underline = st->color();
}
if (currDecs & OVERLINE) {
decorations &= ~OVERLINE;
overline = st->color();
}
if (currDecs & LINE_THROUGH) {
decorations &= ~LINE_THROUGH;
linethrough = st->color();
}
}
curr = curr->parent();
if (curr && curr->isRenderBlock() && curr->continuation())
curr = curr->continuation();
} while (curr && decorations && (!quirksMode || !curr->element() ||
(curr->element()->id() != ID_A && curr->element()->id() != ID_FONT)));
// If we bailed out, use the element we bailed out at (typically a <font> or <a> element).
if (decorations && curr) {
RenderStyle *st = curr->style();
if (decorations & UNDERLINE)
underline = st->color();
if (decorations & OVERLINE)
overline = st->color();
if (decorations & LINE_THROUGH)
linethrough = st->color();
}
}
int RenderObject::maximalOutlineSize(PaintAction p) const
{
if (p != PaintActionOutline)
return 0;
return static_cast<RenderCanvas*>(document()->renderer())->maximalOutlineSize();
}
void RenderObject::collectBorders(TQValueList<CollapsedBorderValue>& borderStyles)
{
for (RenderObject* curr = firstChild(); curr; curr = curr->nextSibling())
curr->collectBorders(borderStyles);
}
bool RenderObject::flowAroundFloats() const
{
return isReplaced() || hasOverflowClip() || style()->flowAroundFloats();
}
bool RenderObject::usesLineWidth() const
{
// 1. All auto-width objects that avoid floats should always use lineWidth
// 2. For objects with a specified width, we match WinIE's behavior:
// (a) tables use contentWidth
// (b) <hr>s use lineWidth
// (c) all other objects use lineWidth in quirks mode and contentWidth in strict mode.
return (flowAroundFloats() && (style()->width().isVariable() || isHR() || (style()->htmlHacks() && !isTable())));
}
bool RenderObject::hasCounter(const TQString& counter) const
{
if (style() && (!isText() || isCounter())) {
if (lookupCounter(counter)) return true;
if (style()->hasCounterReset(counter)) {
return true;
}
else if (style()->hasCounterIncrement(counter)) {
return true;
}
}
if (counter == "list-item") {
if (isListItem()) return true;
if (element() && (
element()->id() == ID_OL ||
element()->id() == ID_UL ||
element()->id() == ID_MENU ||
element()->id() == ID_DIR))
return true;
} else
if (counter == "-khtml-quotes" && isQuote()) {
return (static_cast<const RenderQuote*>(this)->quoteCount() != 0);
}
return false;
}
CounterNode* RenderObject::getCounter(const TQString& counter, bool view, bool counters)
{
// kdDebug( 6040 ) << renderName() << " getCounter(" << counter << ")" << endl;
if (!style()) return 0;
if (isText() && !isCounter()) return 0;
CounterNode *i = lookupCounter(counter);
if (i) return i;
int val = 0;
if (style()->hasCounterReset(counter) || isRoot()) {
i = new CounterReset(this);
val = style()->counterReset(counter);
if (style()->hasCounterIncrement(counter)) {
val += style()->counterIncrement(counter);
}
// kdDebug( 6040 ) << renderName() << " counter-reset: " << counter << " " << val << endl;
}
else
if (style()->hasCounterIncrement(counter)) {
i = new CounterNode(this);
val = style()->counterIncrement(counter);
// kdDebug( 6040 ) << renderName() << " counter-increment: " << counter << " " << val << endl;
}
else if (counter == "list-item") {
if (isListItem()) {
if (element() && element()->id() == ID_LI) {
DOMString v = static_cast<ElementImpl*>(element())->getAttribute(ATTR_VALUE);
if ( !v.isEmpty() ) {
i = new CounterReset(this);
val = v.toInt();
// kdDebug( 6040 ) << renderName() << " counter-reset: " << counter << " " << val << endl;
}
}
if (!i) {
i = new CounterNode(this);
val = 1;
// kdDebug( 6040 ) << renderName() << " counter-increment: " << counter << " " << val << endl;
}
}
else
if (element() && element()->id() == ID_OL) {
i = new CounterReset(this);
DOMString v = static_cast<ElementImpl*>(element())->getAttribute(ATTR_START);
if ( !v.isEmpty() )
val = v.toInt()-1;
else
val = 0;
// kdDebug( 6040 ) << renderName() << " counter-reset: " << counter << " " << val << endl;
}
else
if (element() &&
(element()->id() == ID_UL ||
element()->id() == ID_MENU||
element()->id() == ID_DIR))
{
i = new CounterReset(this);
val = 0;
// kdDebug( 6040 ) << renderName() << " counter-reset: " << counter << " " << val << endl;
}
}
else if (counter == "-khtml-quotes" && isQuote()) {
i = new CounterNode(this);
val = static_cast<RenderQuote*>(this)->quoteCount();
}
if (!i) {
i = new CounterNode(this);
val = 0;
// kdDebug( 6040 ) << renderName() << " counter-increment: " << counter << " " << val << endl;
}
i->setValue(val);
if (view) i->setIsVisual();
if (counters) i->setHasCounters();
insertCounter(counter, i);
if (!isRoot()) {
CounterNode *last=0, *current=0;
RenderObject *n = previousSibling();
while(n) {
if (n->hasCounter(counter)) {
current = n->getCounter(counter);
break;
}
else
n = n->previousSibling();
}
last = current;
CounterNode *sibling = current;
// counter-reset on same render-level is our counter-parent
if (last) {
// Found render-sibling, now search for later counter-siblings among its render-children
n = n->lastChild();
while (n) {
if (n->hasCounter(counter)) {
current = n->getCounter(counter);
if (last->parent() == current->parent() || sibling == current->parent()) {
last = current;
// If the current counter is not the last, search deeper
if (current->nextSibling()) {
n = n->lastChild();
continue;
}
else
break;
}
}
n = n->previousSibling();
}
if (sibling->isReset())
{
if (last != sibling)
sibling->insertAfter(i, last);
else
sibling->insertAfter(i, 0);
}
else if (last->parent())
last->parent()->insertAfter(i, last);
}
else if (parent()) {
// Nothing found among siblings, let our parent search
last = parent()->getCounter(counter, false);
if (last->isReset())
last->insertAfter(i, 0);
else if (last->parent())
last->parent()->insertAfter(i, last);
}
}
return i;
}
CounterNode* RenderObject::lookupCounter(const TQString& counter) const
{
TQDict<khtml::CounterNode>* counters = document()->counters(this);
if (counters)
return counters->find(counter);
else
return 0;
}
void RenderObject::detachCounters()
{
TQDict<khtml::CounterNode>* counters = document()->counters(this);
if (!counters) return;
TQDictIterator<khtml::CounterNode> i(*counters);
while (i.current()) {
(*i)->remove();
delete (*i);
++i;
}
document()->removeCounters(this);
}
void RenderObject::insertCounter(const TQString& counter, CounterNode* val)
{
TQDict<khtml::CounterNode>* counters = document()->counters(this);
if (!counters) {
counters = new TQDict<khtml::CounterNode>(11);
document()->setCounters(this, counters);
}
counters->insert(counter, val);
}
void RenderObject::updateWidgetMasks() {
for (RenderObject* curr = firstChild(); curr; curr = curr->nextSibling()) {
if ( curr->isWidget() && static_cast<RenderWidget*>(curr)->needsMask() ) {
TQWidget* w = static_cast<RenderWidget*>(curr)->widget();
if (!w)
return;
RenderLayer* l = curr->enclosingStackingContext();
TQRegion r = l ? l->getMask() : TQRegion();
int x,y;
if (!r.isNull() && curr->absolutePosition(x,y)) {
int pbx = curr->borderLeft()+curr->paddingLeft();
int pby = curr->borderTop()+curr->paddingTop();
x+= pbx;
y+= pby;
r = r.intersect(TQRect(x,y,
curr->width()-pbx-curr->borderRight()-curr->paddingRight(),
curr->height()-pby-curr->borderBottom()-curr->paddingBottom()));
#ifdef MASK_DEBUG
TQMemArray<TQRect> ar = r.rects();
kdDebug(6040) << "|| Setting widget mask for " << curr->information() << endl;
for (int i = 0; i < ar.size() ; ++i) {
kdDebug(6040) << " " << ar[i] << endl;
}
#endif
r.translate(-x,-y);
w->setMask(r);
} else {
w->clearMask();
}
}
else if (!curr->layer() || !curr->layer()->isStackingContext())
curr->updateWidgetMasks();
}
}
TQRegion RenderObject::visibleFlowRegion(int x, int y) const
{
TQRegion r;
for (RenderObject* ro=firstChild();ro;ro=ro->nextSibling()) {
if( !ro->layer() && !ro->isInlineFlow() && ro->style()->visibility() == VISIBLE) {
const RenderStyle *s = ro->style();
if (ro->isRelPositioned())
static_cast<const RenderBox*>(ro)->relativePositionOffset(x,y);
if ( s->backgroundImage() || s->backgroundColor().isValid() || s->hasBorder() )
r += TQRect(x + ro->effectiveXPos(),y + ro->effectiveYPos(), ro->effectiveWidth(), ro->effectiveHeight());
else
r += ro->visibleFlowRegion(x+ro->xPos(), y+ro->yPos());
}
}
return r;
}
#undef RED_LUMINOSITY
#undef GREEN_LUMINOSITY
#undef BLUE_LUMINOSITY
#undef INTENSITY_FACTOR
#undef LIGHT_FACTOR
#undef LUMINOSITY_FACTOR
#undef MAX_COLOR
#undef COLOR_DARK_THRESHOLD
#undef COLOR_LIGHT_THRESHOLD
#undef COLOR_LITE_BS_FACTOR
#undef COLOR_LITE_TS_FACTOR
#undef COLOR_DARK_BS_FACTOR
#undef COLOR_DARK_TS_FACTOR
#undef LIGHT_GRAY
#undef DARK_GRAY
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