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webkit / WebKit / b6a2ac4e6d983dc4f34b9df81e7e8d035c4af690 / . / WebCore / rendering / RenderObject.cpp
blob: 609ecc97d2b0e7af843d532408cd56739d7e75ff [file] [log] [blame]
/**
* This file is part of the html renderer for KDE.
*
* Copyright (C) 1999 Lars Knoll (knoll@kde.org)
* (C) 1999 Antti Koivisto (koivisto@kde.org)
* (C) 2000 Dirk Mueller (mueller@kde.org)
* Copyright (C) 2004, 2005, 2006 Apple Computer, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public License
* along with this library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*
*/
#include "config.h"
#include "RenderObject.h"
#include "CachedImage.h"
#include "Document.h"
#include "Element.h"
#include "EventNames.h"
#include "FloatRect.h"
#include "Frame.h"
#include "FrameView.h"
#include "GraphicsContext.h"
#include "IntPointArray.h"
#include "AccessibilityObjectCache.h"
#include "RenderBlock.h"
#include "RenderTable.h"
#include "RenderTableCell.h"
#include "RenderTableCol.h"
#include "RenderTableRow.h"
#include "RenderText.h"
#include "cssstyleselector.h"
#include "dom2_eventsimpl.h"
#include "Position.h"
#include "HTMLNames.h"
#include "RenderArena.h"
#include "RenderCanvas.h"
#include "RenderFlexibleBox.h"
#include "RenderInline.h"
#include "render_line.h"
#include "render_list.h"
#include "RenderTheme.h"
#include "VisiblePosition.h"
#include <qmatrix.h>
#include "TextEncoding.h"
#include <qtextstream.h>
namespace WebCore {
using namespace EventNames;
using namespace HTMLNames;
#ifndef NDEBUG
static void *baseOfRenderObjectBeingDeleted;
#endif
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 destroy can find it.
*(size_t *)ptr = sz;
}
RenderObject *RenderObject::createObject(Node* node, RenderStyle* style)
{
RenderObject *o = 0;
RenderArena* arena = node->document()->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:
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;
case BOX:
case INLINE_BOX:
o = new (arena) RenderFlexibleBox(node);
break;
}
return o;
}
#ifndef NDEBUG
struct RenderObjectCounter {
static int count;
~RenderObjectCounter() { if (count != 0) fprintf(stderr, "LEAK: %d RenderObject\n", count); }
};
int RenderObjectCounter::count;
static RenderObjectCounter renderObjectCounter;
#endif NDEBUG
RenderObject::RenderObject(Node* 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_posChildNeedsLayout( false ),
m_minMaxKnown( false ),
m_floating( false ),
m_positioned( false ),
m_relPositioned( false ),
m_paintBackground( false ),
m_isAnonymous( node == node->document() ),
m_recalcMinMax( false ),
m_isText( false ),
m_inline( true ),
m_replaced( false ),
m_isDragging( false ),
m_hasOverflowClip(false)
{
#ifndef NDEBUG
++RenderObjectCounter::count;
#endif
}
RenderObject::~RenderObject()
{
#ifndef NDEBUG
--RenderObjectCounter::count;
#endif
}
bool RenderObject::hasAncestor(const RenderObject *obj) const
{
for (const RenderObject *r = this; r; r = r->m_parent)
if (r == obj)
return true;
return false;
}
bool RenderObject::isRoot() const
{
return element() && element()->renderer() == this &&
element()->document()->documentElement() == element();
}
bool RenderObject::isBody() const
{
return element() && element()->renderer() == this && element()->hasTagName(bodyTag);
}
bool RenderObject::isHR() const
{
return element() && element()->hasTagName(hrTag);
}
bool RenderObject::isHTMLMarquee() const
{
return element() && element()->renderer() == this && element()->hasTagName(marqueeTag);
}
bool RenderObject::canHaveChildren() const
{
return false;
}
RenderFlow* RenderObject::continuation() const
{
return 0;
}
bool RenderObject::isInlineContinuation() const
{
return false;
}
void RenderObject::addChild(RenderObject* , RenderObject *)
{
KHTMLAssert(0);
}
RenderObject* RenderObject::removeChildNode(RenderObject* )
{
KHTMLAssert(0);
return 0;
}
void RenderObject::removeChild(RenderObject* )
{
KHTMLAssert(0);
}
void RenderObject::appendChildNode(RenderObject*)
{
KHTMLAssert(0);
}
void RenderObject::insertChildNode(RenderObject*, RenderObject*)
{
KHTMLAssert(0);
}
RenderObject *RenderObject::nextInPreOrder() const
{
if (RenderObject* o = firstChild())
return o;
return nextInPreOrderAfterChildren();
}
RenderObject* RenderObject::nextInPreOrderAfterChildren() const
{
RenderObject* o;
if (!(o = nextSibling())) {
o = parent();
while (o && !o->nextSibling())
o = o->parent();
if (o)
o = o->nextSibling();
}
return o;
}
RenderObject *RenderObject::previousInPreOrder() const
{
if (RenderObject* o = previousSibling()) {
while (o->lastChild())
o = o->lastChild();
return o;
}
return parent();
}
RenderObject* RenderObject::childAt(unsigned index) const
{
RenderObject* child = firstChild();
for (unsigned i = 0; child && i < index; i++)
child = child->nextSibling();
return child;
}
bool RenderObject::isEditable() const
{
RenderText *textRenderer = 0;
if (isText()) {
textRenderer = static_cast<RenderText *>(const_cast<RenderObject *>(this));
}
return style()->visibility() == VISIBLE &&
element() && element()->isContentEditable() &&
((isBlockFlow() && !firstChild()) ||
isReplaced() ||
isBR() ||
(textRenderer && textRenderer->firstTextBox()));
}
RenderObject *RenderObject::nextEditable() const
{
RenderObject *r = const_cast<RenderObject *>(this);
RenderObject *n = firstChild();
if (n) {
while (n) {
r = n;
n = n->firstChild();
}
if (r->isEditable())
return r;
else
return r->nextEditable();
}
n = r->nextSibling();
if (n) {
r = n;
while (n) {
r = n;
n = n->firstChild();
}
if (r->isEditable())
return r;
else
return r->nextEditable();
}
n = r->parent();
while (n) {
r = n;
n = r->nextSibling();
if (n) {
r = n;
n = r->firstChild();
while (n) {
r = n;
n = n->firstChild();
}
if (r->isEditable())
return r;
else
return r->nextEditable();
}
n = r->parent();
}
return 0;
}
RenderObject *RenderObject::previousEditable() const
{
RenderObject *r = const_cast<RenderObject *>(this);
RenderObject *n = firstChild();
if (n) {
while (n) {
r = n;
n = n->lastChild();
}
if (r->isEditable())
return r;
else
return r->previousEditable();
}
n = r->previousSibling();
if (n) {
r = n;
while (n) {
r = n;
n = n->lastChild();
}
if (r->isEditable())
return r;
else
return r->previousEditable();
}
n = r->parent();
while (n) {
r = n;
n = r->previousSibling();
if (n) {
r = n;
n = r->lastChild();
while (n) {
r = n;
n = n->lastChild();
}
if (r->isEditable())
return r;
else
return r->previousEditable();
}
n = r->parent();
}
return 0;
}
RenderObject *RenderObject::firstLeafChild() const
{
RenderObject *r = firstChild();
while (r) {
RenderObject *n = 0;
n = r->firstChild();
if (!n)
break;
r = n;
}
return r;
}
RenderObject *RenderObject::lastLeafChild() const
{
RenderObject *r = lastChild();
while (r) {
RenderObject *n = 0;
n = r->lastChild();
if (!n)
break;
r = n;
}
return r;
}
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;
WebCore::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: Descend into our siblings trying to find the next layer. If we do find
// a layer, and if its parent layer matches our desired parent layer, then we have
// a match.
for (RenderObject* curr = startPoint ? startPoint->nextSibling() : firstChild();
curr; curr = curr->nextSibling()) {
RenderLayer* nextLayer = curr->findNextLayer(parentLayer, 0, false);
if (nextLayer) {
if (nextLayer->parent() == parentLayer)
return nextLayer;
return 0;
}
}
// Step 2: If our layer is the desired parent layer, then we're finished. We didn't
// find anything.
RenderLayer* ourLayer = layer();
if (parentLayer == ourLayer)
return 0;
// Step 3: If we have a layer, then return that layer. It will be checked against
// the desired parent layer in the for loop above.
if (ourLayer)
return ourLayer;
// 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()
{
RenderObject* curr = this;
while (curr) {
RenderLayer *layer = curr->layer();
if (layer)
return layer;
curr = curr->parent();
}
return 0;
}
bool RenderObject::requiresLayer()
{
return isRoot() || isPositioned() || isRelPositioned() || isTransparent() || hasOverflowClip();
}
RenderBlock* RenderObject::firstLineBlock() const
{
return 0;
}
void RenderObject::updateFirstLetter()
{}
int RenderObject::offsetLeft() const
{
int x = xPos();
if (!isPositioned()) {
if (isRelPositioned()) {
int y = 0;
((RenderBox*)this)->relativePositionOffset(x, y);
}
RenderObject* offsetPar = offsetParent();
RenderObject* curr = parent();
while (curr && curr != offsetPar) {
x += curr->xPos();
curr = curr->parent();
}
}
return x;
}
int RenderObject::offsetTop() const
{
int y = yPos();
if (!isPositioned()) {
if (isRelPositioned()) {
int x = 0;
((RenderBox*)this)->relativePositionOffset(x, y);
}
RenderObject* offsetPar = offsetParent();
RenderObject* curr = parent();
while (curr && curr != offsetPar) {
y += curr->yPos();
curr = curr->parent();
}
}
return y;
}
RenderObject* RenderObject::offsetParent() const
{
// FIXME: It feels like this function could almost be written using containing blocks.
bool skipTables = isPositioned() || isRelPositioned();
RenderObject* curr = parent();
while (curr && (!curr->element() ||
(!curr->isPositioned() && !curr->isRelPositioned() &&
!(!style()->htmlHacks() && skipTables ? curr->isRoot() : curr->isBody())))) {
if (!skipTables && curr->element() && (curr->isTableCell() || curr->isTable()))
break;
curr = curr->parent();
}
return curr;
}
// More IE extensions. clientWidth and clientHeight represent the interior of an object
// excluding border and scrollbar.
int
RenderObject::clientWidth() const
{
return width() - borderLeft() - borderRight() -
(includeScrollbarSize() ? layer()->verticalScrollbarWidth() : 0);
}
int
RenderObject::clientHeight() const
{
return height() - borderTop() - borderBottom() -
(includeScrollbarSize() ? layer()->horizontalScrollbarHeight() : 0);
}
// scrollWidth/scrollHeight will be the same as clientWidth/clientHeight unless the
// object has overflow:hidden/scroll/auto specified and also has overflow.
int
RenderObject::scrollWidth() const
{
return hasOverflowClip() ? layer()->scrollWidth() : overflowWidth();
}
int
RenderObject::scrollHeight() const
{
return hasOverflowClip() ? layer()->scrollHeight() : overflowHeight();
}
bool RenderObject::scroll(KWQScrollDirection direction, KWQScrollGranularity granularity, float multiplier)
{
RenderLayer *l = layer();
if (l != 0 && l->scroll(direction, granularity, multiplier)) {
return true;
}
RenderBlock *b = containingBlock();
if (b != 0 && !b->isCanvas()) {
return b->scroll(direction, granularity, multiplier);
}
return false;
}
bool
RenderObject::hasStaticX() const
{
return (style()->left().isAuto() && style()->right().isAuto()) ||
style()->left().isStatic() ||
style()->right().isStatic();
}
bool
RenderObject::hasStaticY() const
{
return (style()->top().isAuto() && style()->bottom().isAuto()) || style()->top().isStatic();
}
void RenderObject::markAllDescendantsWithFloatsForLayout(RenderObject*)
{
}
void RenderObject::setNeedsLayout(bool b, bool markParents)
{
bool alreadyNeededLayout = m_needsLayout;
m_needsLayout = b;
if (b) {
if (!alreadyNeededLayout && markParents)
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() == FixedPosition || last->style()->position() == AbsolutePosition)) {
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<const RenderTableCell *>(this)->table();
if (isCanvas())
return (RenderBlock*)this;
RenderObject *o = parent();
if (!isText() && m_style->position() == FixedPosition) {
while ( o && !o->isCanvas() )
o = o->parent();
}
else if (!isText() && m_style->position() == AbsolutePosition) {
while (o && (o->style()->position() == StaticPosition || (o->isInline() && !o->isReplaced()))
&& !o->isRoot() && !o->isCanvas()) {
// For relpositioned inlines, we return the nearest enclosing block. We don't try
// to return the inline itself. This allows us to avoid having a positioned objects
// list in all RenderInlines and lets us return a strongly-typed RenderBlock* result
// from this method. The container() method can actually be used to obtain the
// inline directly.
if (o->style()->position() == RelativePosition && o->isInline() && !o->isReplaced())
return o->containingBlock();
o = o->parent();
}
} else {
while (o && ((o->isInline() && !o->isReplaced()) || o->isTableRow() || o->isTableSection()
|| o->isTableCol() || o->isFrameSet()
#if SVG_SUPPORT
|| o->isKCanvasContainer()
#endif
))
o = o->parent();
}
if (!o || !o->isRenderBlock())
return 0; // Probably doesn't happen any more, but leave just in case. -dwh
return static_cast<RenderBlock*>(o);
}
int RenderObject::containingBlockWidth() const
{
// ###
return containingBlock()->contentWidth();
}
int RenderObject::containingBlockHeight() const
{
// ###
return containingBlock()->contentHeight();
}
bool RenderObject::mustRepaintBackgroundOrBorder() const
{
// If we don't have a background/border, then nothing to do.
if (!shouldPaintBackgroundOrBorder())
return false;
// Ok, let's check the background first.
const BackgroundLayer* bgLayer = style()->backgroundLayers();
if (bgLayer->next())
return true; // Nobody will use multiple background layers without wanting fancy positioning.
// Make sure we have a valid background image.
CachedImage* bg = bgLayer->backgroundImage();
bool shouldPaintBackgroundImage = bg && bg->canRender();
// These are always percents or auto.
if (shouldPaintBackgroundImage &&
(bgLayer->backgroundXPosition().value() != 0 || bgLayer->backgroundYPosition().value() != 0))
return true; // The background image will shift unpredictably if the size changes.
// Background is ok. Let's check border.
if (style()->hasBorder()) {
// Border images are not ok.
CachedImage* borderImage = style()->borderImage().image();
bool shouldPaintBorderImage = borderImage && borderImage->canRender();
if (shouldPaintBorderImage && borderImage->isLoaded())
return true; // If the image hasn't loaded, we're still using the normal border style.
}
return false;
}
void RenderObject::drawBorder(GraphicsContext* p, int x1, int y1, int x2, int y2,
BorderSide s, Color c, const Color& 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)
{
// FIXME: The original KHTML did XOR here -- what do we want to do instead?
c = Color::white;
}
else {
if (style == INSET || style == OUTSET || style == RIDGE || style == GROOVE)
c.setRgb(238, 238, 238);
else
c = textcolor;
}
}
switch(style)
{
case BNONE:
case BHIDDEN:
return;
case DOTTED:
p->setPen(Pen(c, width == 1 ? 0 : width, Pen::DotLine));
/* nobreak; */
case DASHED:
if(style == DASHED)
p->setPen(Pen(c, width == 1 ? 0 : width, Pen::DashLine));
if (width > 0)
switch(s)
{
case BSBottom:
case BSTop:
p->drawLine(IntPoint(x1, (y1+y2)/2), IntPoint(x2, (y1+y2)/2));
break;
case BSRight:
case BSLeft:
p->drawLine(IntPoint((x1+x2)/2, y1), IntPoint((x1+x2)/2, y2));
break;
}
break;
case DOUBLE:
{
int third = (width+1)/3;
if (adjbw1 == 0 && adjbw2 == 0)
{
p->setPen(Pen::NoPen);
p->setBrush(c);
switch(s)
{
case BSTop:
case BSBottom:
p->drawRect(IntRect(x1, y1 , x2-x1, third));
p->drawRect(IntRect(x1, y2-third, x2-x1, third));
break;
case BSLeft:
p->drawRect(IntRect(x1 , y1+1, third, y2-y1-1));
p->drawRect(IntRect(x2-third, y1+1, third, y2-y1-1));
break;
case BSRight:
p->drawRect(IntRect(x1 , y1+1, third, y2-y1-1));
p->drawRect(IntRect(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:
if(s == BSTop || s == BSLeft)
c = c.dark();
/* nobreak; */
case OUTSET:
if(style == OUTSET && (s == BSBottom || s == BSRight))
c = c.dark();
/* nobreak; */
case SOLID:
IntPointArray quad(4);
p->setPen(Pen::NoPen);
p->setBrush(c);
ASSERT(x2 >= x1);
ASSERT(y2 >= y1);
if (adjbw1==0 && adjbw2 == 0) {
p->drawRect(IntRect(x1,y1,x2-x1,y2-y1));
return;
}
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;
}
}
bool RenderObject::paintBorderImage(GraphicsContext* p, int _tx, int _ty, int w, int h, const RenderStyle* style)
{
CachedImage* borderImage = style->borderImage().image();
if (!borderImage->isLoaded())
return true; // Never paint a border image incrementally, but don't paint the fallback borders either.
// If we have a border radius, the border image gets clipped to the rounded rect.
bool clipped = false;
if (style->hasBorderRadius()) {
IntRect clipRect(_tx, _ty, w, h);
p->save();
p->addRoundedRectClip(clipRect,
style->borderTopLeftRadius(), style->borderTopRightRadius(),
style->borderBottomLeftRadius(), style->borderBottomRightRadius());
clipped = true;
}
int imageWidth = borderImage->image()->width();
int imageHeight = borderImage->image()->height();
int topSlice = kMin(imageHeight, style->borderImage().m_slices.top.calcValue(borderImage->image()->height()));
int bottomSlice = kMin(imageHeight, style->borderImage().m_slices.bottom.calcValue(borderImage->image()->height()));
int leftSlice = kMin(imageWidth, style->borderImage().m_slices.left.calcValue(borderImage->image()->width()));
int rightSlice = kMin(imageWidth, style->borderImage().m_slices.right.calcValue(borderImage->image()->width()));
EBorderImageRule hRule = style->borderImage().horizontalRule();
EBorderImageRule vRule = style->borderImage().verticalRule();
bool drawLeft = leftSlice > 0 && style->borderLeftWidth() > 0;
bool drawTop = topSlice > 0 && style->borderTopWidth() > 0;
bool drawRight = rightSlice > 0 && style->borderRightWidth() > 0;
bool drawBottom = bottomSlice > 0 && style->borderBottomWidth() > 0;
bool drawMiddle = (imageWidth - leftSlice - rightSlice) > 0 && (w - style->borderLeftWidth() - style->borderRightWidth()) > 0 &&
(imageHeight - topSlice - bottomSlice) > 0 && (h - style->borderTopWidth() - style->borderBottomWidth()) > 0;
if (drawLeft) {
// Paint the top and bottom left corners.
// The top left corner rect is (_tx, _ty, leftWidth, topWidth)
// The rect to use from within the image is obtained from our slice, and is (0, 0, leftSlice, topSlice)
if (drawTop)
p->drawImage(borderImage->image(), IntRect(_tx, _ty, style->borderLeftWidth(), style->borderTopWidth()),
0, 0, leftSlice, topSlice);
// The bottom left corner rect is (_tx, _ty + h - bottomWidth, leftWidth, bottomWidth)
// The rect to use from within the image is (0, imageHeight - bottomSlice, leftSlice, botomSlice)
if (drawBottom)
p->drawImage(borderImage->image(), IntRect(_tx, _ty + h - style->borderBottomWidth(), style->borderLeftWidth(), style->borderBottomWidth()),
0, imageHeight - bottomSlice, leftSlice, bottomSlice);
// Paint the left edge.
// Have to scale and tile into the border rect.
p->drawScaledAndTiledImage(borderImage->image(), IntRect(_tx, _ty + style->borderTopWidth(), style->borderLeftWidth(),
h - style->borderTopWidth() - style->borderBottomWidth()),
0, topSlice, leftSlice, imageHeight - topSlice - bottomSlice,
Image::StretchTile, (Image::TileRule)vRule);
}
if (drawRight) {
// Paint the top and bottom right corners
// The top right corner rect is (_tx + w - rightWidth, _ty, rightWidth, topWidth)
// The rect to use from within the image is obtained from our slice, and is (imageWidth - rightSlice, 0, rightSlice, topSlice)
if (drawTop)
p->drawImage(borderImage->image(), IntRect(_tx + w - style->borderRightWidth(), _ty, style->borderRightWidth(), style->borderTopWidth()),
imageWidth - rightSlice, 0, rightSlice, topSlice);
// The bottom right corner rect is (_tx + w - rightWidth, _ty + h - bottomWidth, rightWidth, bottomWidth)
// The rect to use from within the image is (imageWidth - rightSlice, imageHeight - bottomSlice, rightSlice, botomSlice)
if (drawBottom)
p->drawImage(borderImage->image(), IntRect(_tx + w - style->borderRightWidth(), _ty + h - style->borderBottomWidth(), style->borderRightWidth(), style->borderBottomWidth()),
imageWidth - rightSlice, imageHeight - bottomSlice, rightSlice, bottomSlice);
// Paint the right edge.
p->drawScaledAndTiledImage(borderImage->image(), IntRect(_tx + w - style->borderRightWidth(), _ty + style->borderTopWidth(), style->borderRightWidth(),
h - style->borderTopWidth() - style->borderBottomWidth()),
imageWidth - rightSlice, topSlice, rightSlice, imageHeight - topSlice - bottomSlice,
Image::StretchTile, (Image::TileRule)vRule);
}
// Paint the top edge.
if (drawTop)
p->drawScaledAndTiledImage(borderImage->image(), IntRect(_tx + style->borderLeftWidth(), _ty, w - style->borderLeftWidth() - style->borderRightWidth(), style->borderTopWidth()),
leftSlice, 0, imageWidth - rightSlice - leftSlice, topSlice,
(Image::TileRule)hRule, Image::StretchTile);
// Paint the bottom edge.
if (drawBottom)
p->drawScaledAndTiledImage(borderImage->image(), IntRect(_tx + style->borderLeftWidth(), _ty + h - style->borderBottomWidth(),
w - style->borderLeftWidth() - style->borderRightWidth(), style->borderBottomWidth()),
leftSlice, imageHeight - bottomSlice, imageWidth - rightSlice - leftSlice, bottomSlice,
(Image::TileRule)hRule, Image::StretchTile);
// Paint the middle.
if (drawMiddle)
p->drawScaledAndTiledImage(borderImage->image(), IntRect(_tx + style->borderLeftWidth(), _ty + style->borderTopWidth(), w - style->borderLeftWidth() - style->borderRightWidth(),
h - style->borderTopWidth() - style->borderBottomWidth()),
leftSlice, topSlice, imageWidth - rightSlice - leftSlice, imageHeight - topSlice - bottomSlice,
(Image::TileRule)hRule, (Image::TileRule)vRule);
// Clear the clip for the border radius.
if (clipped)
p->restore();
return true;
}
void RenderObject::paintBorder(GraphicsContext* p, int _tx, int _ty, int w, int h, const RenderStyle* style, bool begin, bool end)
{
CachedImage* borderImage = style->borderImage().image();
bool shouldPaintBackgroundImage = borderImage && borderImage->canRender();
if (shouldPaintBackgroundImage)
shouldPaintBackgroundImage = paintBorderImage(p, _tx, _ty, w, h, style);
if (shouldPaintBackgroundImage)
return;
const Color& tc = style->borderTopColor();
const Color& bc = style->borderBottomColor();
const Color& lc = style->borderLeftColor();
const Color& 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;
// Need sufficient width and height to contain border radius curves. Sanity check our top/bottom
// values and our width/height values to make sure the curves can all fit. If not, then we won't paint
// any border radii.
bool render_radii = false;
IntSize topLeft = style->borderTopLeftRadius();
IntSize topRight = style->borderTopRightRadius();
IntSize bottomLeft = style->borderBottomLeftRadius();
IntSize bottomRight = style->borderBottomRightRadius();
if (style->hasBorderRadius()) {
int requiredWidth = kMax(topLeft.width() + topRight.width(), bottomLeft.width() + bottomRight.width());
int requiredHeight = kMax(topLeft.height() + bottomLeft.height(), topRight.height() + bottomRight.height());
render_radii = (requiredWidth <= w && requiredHeight <= h);
}
// Clip to the rounded rectangle.
if (render_radii) {
p->save();
p->addRoundedRectClip(IntRect(_tx, _ty, w, h), topLeft, topRight, bottomLeft, bottomRight);
}
if (render_t) {
bool ignore_left = (render_radii && topLeft.width() > 0) ||
((tc == lc) && (tt == lt) &&
(ts >= OUTSET) &&
(ls == DOTTED || ls == DASHED || ls == SOLID || ls == OUTSET));
bool ignore_right = (render_radii && topRight.width() > 0) ||
((tc == rc) && (tt == rt) &&
(ts >= OUTSET) &&
(rs == DOTTED || rs == DASHED || rs == SOLID || rs == INSET));
int x = _tx;
int x2 = _tx + w;
if (render_radii) {
x += topLeft.width();
x2 -= topRight.width();
}
drawBorder(p, x, _ty, x2, _ty + style->borderTopWidth(), BSTop, tc, style->color(), ts,
ignore_left ? 0 : style->borderLeftWidth(),
ignore_right? 0 : style->borderRightWidth());
}
if (render_b) {
bool ignore_left = (render_radii && bottomLeft.width() > 0) ||
((bc == lc) && (bt == lt) &&
(bs >= OUTSET) &&
(ls == DOTTED || ls == DASHED || ls == SOLID || ls == OUTSET));
bool ignore_right = (render_radii && bottomRight.width() > 0) ||
((bc == rc) && (bt == rt) &&
(bs >= OUTSET) &&
(rs == DOTTED || rs == DASHED || rs == SOLID || rs == INSET));
int x = _tx;
int x2 = _tx + w;
if (render_radii) {
x += bottomLeft.width();
x2 -= bottomRight.width();
}
drawBorder(p, x, _ty + h - style->borderBottomWidth(), x2, _ty + h, BSBottom, bc, style->color(), bs,
ignore_left ? 0 :style->borderLeftWidth(),
ignore_right? 0 :style->borderRightWidth());
}
if (render_l) {
bool ignore_top = (render_radii && topLeft.height() > 0) ||
((tc == lc) && (tt == lt) &&
(ls >= OUTSET) &&
(ts == DOTTED || ts == DASHED || ts == SOLID || ts == OUTSET));
bool ignore_bottom = (render_radii && bottomLeft.height() > 0) ||
((bc == lc) && (bt == lt) &&
(ls >= OUTSET) &&
(bs == DOTTED || bs == DASHED || bs == SOLID || bs == INSET));
int y = _ty;
int y2 = _ty + h;
if (render_radii) {
y += topLeft.height();
y2 -= bottomLeft.height();
}
drawBorder(p, _tx, y, _tx + style->borderLeftWidth(), y2, BSLeft, lc, style->color(), ls,
ignore_top?0:style->borderTopWidth(),
ignore_bottom?0:style->borderBottomWidth());
}
if (render_r) {
bool ignore_top = (render_radii && topRight.height() > 0) ||
((tc == rc) && (tt == rt) &&
(rs >= DOTTED || rs == INSET) &&
(ts == DOTTED || ts == DASHED || ts == SOLID || ts == OUTSET));
bool ignore_bottom = (render_radii && bottomRight.height() > 0) ||
((bc == rc) && (bt == rt) &&
(rs >= DOTTED || rs == INSET) &&
(bs == DOTTED || bs == DASHED || bs == SOLID || bs == INSET));
int y = _ty;
int y2 = _ty + h;
if (render_radii) {
y += topRight.height();
y2 -= bottomRight.height();
}
drawBorder(p, _tx + w - style->borderRightWidth(), y, _tx + w, y2, BSRight, rc, style->color(), rs,
ignore_top?0:style->borderTopWidth(),
ignore_bottom?0:style->borderBottomWidth());
}
if (render_radii)
p->restore(); // Undo the clip.
}
DeprecatedValueList<IntRect> RenderObject::lineBoxRects()
{
return DeprecatedValueList<IntRect>();
}
void RenderObject::absoluteRects(DeprecatedValueList<IntRect>& rects, int _tx, int _ty)
{
// For blocks inside inlines, we go ahead and include margins so that we run right up to the
// inline boxes above and below us (thus getting merged with them to form a single irregular
// shape).
if (continuation()) {
rects.append(IntRect(_tx, _ty - collapsedMarginTop(),
width(), height()+collapsedMarginTop()+collapsedMarginBottom()));
continuation()->absoluteRects(rects,
_tx - xPos() + continuation()->containingBlock()->xPos(),
_ty - yPos() + continuation()->containingBlock()->yPos());
}
else
rects.append(IntRect(_tx, _ty, width(), height() + borderTopExtra() + borderBottomExtra()));
}
IntRect RenderObject::absoluteBoundingBoxRect()
{
int x = 0, y = 0;
absolutePosition(x, y);
DeprecatedValueList<IntRect> rects;
absoluteRects(rects, x, y);
if (rects.isEmpty())
return IntRect();
DeprecatedValueList<IntRect>::ConstIterator it = rects.begin();
IntRect result = *it;
while (++it != rects.end())
result.unite(*it);
return result;
}
void RenderObject::addAbsoluteRectForLayer(IntRect& result)
{
if (layer())
result.unite(absoluteBoundingBoxRect());
for (RenderObject* current = firstChild(); current; current = current->nextSibling())
current->addAbsoluteRectForLayer(result);
}
IntRect RenderObject::paintingRootRect(IntRect& topLevelRect)
{
IntRect result = absoluteBoundingBoxRect();
topLevelRect = result;
for (RenderObject* current = firstChild(); current; current = current->nextSibling())
current->addAbsoluteRectForLayer(result);
return result;
}
void RenderObject::addFocusRingRects(GraphicsContext* p, int _tx, int _ty)
{
// For blocks inside inlines, we go ahead and include margins so that we run right up to the
// inline boxes above and below us (thus getting merged with them to form a single irregular
// shape).
if (continuation()) {
p->addFocusRingRect(IntRect(_tx, _ty - collapsedMarginTop(), width(), height()+collapsedMarginTop()+collapsedMarginBottom()));
continuation()->addFocusRingRects(p,
_tx - xPos() + continuation()->containingBlock()->xPos(),
_ty - yPos() + continuation()->containingBlock()->yPos());
}
else
p->addFocusRingRect(IntRect(_tx, _ty, width(), height()));
}
void RenderObject::paintOutline(GraphicsContext* p, int _tx, int _ty, int w, int h, const RenderStyle* style)
{
int ow = style->outlineWidth();
if(!ow) return;
EBorderStyle os = style->outlineStyle();
if (os <= BHIDDEN)
return;
Color oc = style->outlineColor();
if (!oc.isValid())
oc = style->color();
int offset = style->outlineOffset();
if (style->outlineStyleIsAuto()) {
if (!theme()->supportsFocusRing(style)) {
// Only paint the focus ring by hand if the theme isn't able to draw the focus ring.
p->initFocusRing(ow, offset);
addFocusRingRects(p, _tx, _ty);
p->drawFocusRing(oc);
p->clearFocusRing();
}
return;
}
_tx -= offset;
_ty -= offset;
w += 2*offset;
h += 2*offset;
drawBorder(p, _tx-ow, _ty-ow, _tx, _ty+h+ow, BSLeft,
Color(oc), style->color(),
os, ow, ow, true);
drawBorder(p, _tx-ow, _ty-ow, _tx+w+ow, _ty, BSTop,
Color(oc), style->color(),
os, ow, ow, true);
drawBorder(p, _tx+w, _ty-ow, _tx+w+ow, _ty+h+ow, BSRight,
Color(oc), style->color(),
os, ow, ow, true);
drawBorder(p, _tx-ow, _ty+h, _tx+w+ow, _ty+h+ow, BSBottom,
Color(oc), style->color(),
os, ow, ow, true);
}
void RenderObject::paint(PaintInfo& i, int tx, int ty)
{
}
void RenderObject::repaint(bool immediate)
{
// Can't use canvas(), since we might be unrooted.
RenderObject* o = this;
while ( o->parent() ) o = o->parent();
if (!o->isCanvas())
return;
RenderCanvas* c = static_cast<RenderCanvas*>(o);
if (c->printingMode())
return; // Don't repaint if we're printing.
c->repaintViewRectangle(getAbsoluteRepaintRect(), immediate);
}
void RenderObject::repaintRectangle(const IntRect& r, bool immediate)
{
// Can't use canvas(), since we might be unrooted.
RenderObject* o = this;
while ( o->parent() ) o = o->parent();
if (!o->isCanvas())
return;
RenderCanvas* c = static_cast<RenderCanvas*>(o);
if (c->printingMode())
return; // Don't repaint if we're printing.
IntRect absRect(r);
computeAbsoluteRepaintRect(absRect);
c->repaintViewRectangle(absRect, immediate);
}
bool RenderObject::repaintAfterLayoutIfNeeded(const IntRect& oldBounds, const IntRect& oldFullBounds)
{
RenderCanvas* c = canvas();
if (c->printingMode())
return false; // Don't repaint if we're printing.
IntRect newBounds, newFullBounds;
getAbsoluteRepaintRectIncludingFloats(newBounds, newFullBounds);
if (newBounds == oldBounds && !selfNeedsLayout())
return false;
bool fullRepaint = selfNeedsLayout() || newBounds.location() != oldBounds.location() || mustRepaintBackgroundOrBorder();
if (fullRepaint) {
c->repaintViewRectangle(oldFullBounds);
if (newBounds != oldBounds)
c->repaintViewRectangle(newFullBounds);
return true;
}
// We didn't move, but we did change size. Invalidate the delta, which will consist of possibly
// two rectangles (but typically only one).
int width = abs(newBounds.width() - oldBounds.width());
if (width)
c->repaintViewRectangle(IntRect(kMin(newBounds.x() + newBounds.width(), oldBounds.x() + oldBounds.width()) - borderRight(),
newBounds.y(),
width + borderRight(),
kMax(newBounds.height(), oldBounds.height())));
int height = abs(newBounds.height() - oldBounds.height());
if (height)
c->repaintViewRectangle(IntRect(newBounds.x(),
kMin(newBounds.bottom(), oldBounds.bottom()) - borderBottom(),
kMax(newBounds.width(), oldBounds.width()),
height + borderBottom()));
return false;
}
void RenderObject::repaintDuringLayoutIfMoved(int x, int y)
{
}
void RenderObject::repaintFloatingDescendants()
{
}
bool RenderObject::checkForRepaintDuringLayout() const
{
return !document()->view()->needsFullRepaint() && !layer();
}
void RenderObject::repaintObjectsBeforeLayout()
{
if (!needsLayout() || isText())
return;
bool blockWithInlineChildren = (isRenderBlock() && !isTable() && normalChildNeedsLayout() && childrenInline());
if (selfNeedsLayout()) {
repaint();
if (blockWithInlineChildren)
return;
}
for (RenderObject* current = firstChild(); current; current = current->nextSibling()) {
if (!current->isPositioned()) // RenderBlock subclass method handles walking the positioned objects.
current->repaintObjectsBeforeLayout();
}
}
IntRect RenderObject::getAbsoluteRepaintRectWithOutline(int ow)
{
IntRect r(getAbsoluteRepaintRect());
r.inflate(ow);
if (continuation() && !isInline())
r.inflateY(collapsedMarginTop());
if (isInlineFlow())
for (RenderObject* curr = firstChild(); curr; curr = curr->nextSibling())
if (!curr->isText())
r.unite(curr->getAbsoluteRepaintRectWithOutline(ow));
return r;
}
IntRect RenderObject::getAbsoluteRepaintRect()
{
if (parent())
return parent()->getAbsoluteRepaintRect();
return IntRect();
}
void RenderObject::getAbsoluteRepaintRectIncludingFloats(IntRect& bounds, IntRect& fullBounds)
{
bounds = fullBounds = getAbsoluteRepaintRect();
}
void RenderObject::computeAbsoluteRepaintRect(IntRect& r, bool f)
{
if (parent())
return parent()->computeAbsoluteRepaintRect(r, f);
}
void RenderObject::dirtyLinesFromChangedChild(RenderObject* child)
{
}
#ifndef NDEBUG
DeprecatedString RenderObject::information() const
{
DeprecatedString str;
QTextStream ts(&str);
ts << renderName()
<< "(" << (style() ? style()->refCount() : 0) << ")"
<< ": " << (void*)this << " ";
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 (needsLayout()) ts << "nl ";
if (m_recalcMinMax) ts << "rmm ";
if (style() && style()->zIndex()) ts << "zI: " << style()->zIndex();
if (element()) {
if (element()->active())
ts << "act ";
if (element()->isLink())
ts << "anchor ";
if (element()->focused())
ts << "focus ";
ts << " <" << element()->localName().deprecatedString() << ">";
ts << " (" << xPos() << "," << yPos() << "," << width() << "," << height() << ")";
if (isTableCell()) {
const RenderTableCell* cell = static_cast<const RenderTableCell *>(this);
ts << " [r=" << cell->row() << " c=" + cell->col() << " rs=" + cell->rowSpan() << " cs=" + cell->colSpan() << "]";
}
}
return str;
}
void RenderObject::dump(QTextStream *stream, DeprecatedString ind) const
{
if (isAnonymous()) { *stream << " anonymous"; }
if (isFloating()) { *stream << " floating"; }
if (isPositioned()) { *stream << " positioned"; }
if (isRelPositioned()) { *stream << " relPositioned"; }
if (isText()) { *stream << " text"; }
if (isInline()) { *stream << " inline"; }
if (isReplaced()) { *stream << " replaced"; }
if (shouldPaintBackgroundOrBorder()) { *stream << " paintBackground"; }
if (needsLayout()) { *stream << " needsLayout"; }
if (minMaxKnown()) { *stream << " minMaxKnown"; }
*stream << endl;
RenderObject *child = firstChild();
while( child != 0 )
{
*stream << ind << child->renderName() << ": ";
child->dump(stream,ind+" ");
child = child->nextSibling();
}
}
void RenderObject::showTree() const
{
if (element())
element()->showTree();
}
void showTree(const RenderObject *ro)
{
if (ro)
ro->showTree();
}
#endif
static Node *selectStartNode(const RenderObject *object)
{
Node *node = 0;
bool forcedOn = false;
for (const RenderObject *curr = object; curr; curr = curr->parent()) {
if (curr->style()->userSelect() == SELECT_TEXT)
forcedOn = true;
if (!forcedOn && curr->style()->userSelect() == SELECT_NONE)
return 0;
if (!node)
node = curr->element();
}
// somewhere up the render tree there must be an element!
ASSERT(node);
return node;
}
bool RenderObject::canSelect() const
{
return selectStartNode(this) != 0;
}
bool RenderObject::shouldSelect() const
{
if (Node *node = selectStartNode(this))
return EventTargetNodeCast(node)->dispatchHTMLEvent(selectstartEvent, true, true);
return false;
}
Color RenderObject::selectionColor(GraphicsContext* p) const
{
Color color;
if (style()->userSelect() != SELECT_NONE) {
RenderStyle* pseudoStyle = getPseudoStyle(RenderStyle::SELECTION);
if (pseudoStyle && pseudoStyle->backgroundColor().isValid())
color = pseudoStyle->backgroundColor();
else
color = p->selectedTextBackgroundColor();
}
return color;
}
Node* RenderObject::draggableNode(bool dhtmlOK, bool uaOK, int x, int y, bool& dhtmlWillDrag) const
{
if (!dhtmlOK && !uaOK)
return 0;
const RenderObject* curr = this;
while (curr) {
Node *elt = curr->element();
if (elt && elt->nodeType() == Node::TEXT_NODE) {
// Since there's no way for the author to address the -khtml-user-drag style for a text node,
// we use our own judgement.
if (uaOK && canvas()->view()->frame()->shouldDragAutoNode(curr->node(), x, y)) {
dhtmlWillDrag = false;
return curr->node();
} else if (curr->shouldSelect()) {
// In this case we have a click in the unselected portion of text. If this text is
// selectable, we want to start the selection process instead of looking for a parent
// to try to drag.
return 0;
}
} else {
EUserDrag dragMode = curr->style()->userDrag();
if (dhtmlOK && dragMode == DRAG_ELEMENT) {
dhtmlWillDrag = true;
return curr->node();
} else if (uaOK && dragMode == DRAG_AUTO
&& canvas()->view()->frame()->shouldDragAutoNode(curr->node(), x, y))
{
dhtmlWillDrag = false;
return curr->node();
}
}
curr = curr->parent();
}
return 0;
}
void RenderObject::selectionStartEnd(int& spos, int& epos)
{
canvas()->selectionStartEnd(spos, epos);
}
RenderBlock* RenderObject::createAnonymousBlock()
{
RenderStyle *newStyle = new (renderArena()) RenderStyle();
newStyle->inheritFrom(m_style);
newStyle->setDisplay(BLOCK);
RenderBlock *newBox = new (renderArena()) RenderBlock(document() /* anonymous box */);
newBox->setStyle(newStyle);
return newBox;
}
void RenderObject::handleDynamicFloatPositionChange()
{
// We have gone from not affecting the inline status of the parent flow to suddenly
// having an impact. See if there is a mismatch between the parent flow's
// childrenInline() state and our state.
setInline(style()->isDisplayInlineType());
if (isInline() != parent()->childrenInline()) {
if (!isInline()) {
if (parent()->isRenderInline()) {
// We have to split the parent flow.
RenderInline* parentInline = static_cast<RenderInline*>(parent());
RenderBlock* newBox = parentInline->createAnonymousBlock();
RenderFlow* oldContinuation = parent()->continuation();
parentInline->setContinuation(newBox);
RenderObject* beforeChild = nextSibling();
parent()->removeChildNode(this);
parentInline->splitFlow(beforeChild, newBox, this, oldContinuation);
}
else if (parent()->isRenderBlock())
static_cast<RenderBlock*>(parent())->makeChildrenNonInline();
}
else {
// An anonymous block must be made to wrap this inline.
RenderBlock* box = createAnonymousBlock();
parent()->insertChildNode(box, this);
box->appendChildNode(parent()->removeChildNode(this));
}
}
}
void RenderObject::setStyle(RenderStyle *style)
{
if (m_style == style)
return;
bool affectsParentBlock = false;
RenderStyle::Diff d = RenderStyle::Equal;
if (m_style) {
// If our z-index changes value or our visibility changes,
// we need to dirty our stacking context's z-order list.
if (style) {
#if __APPLE__
if (m_style->visibility() != style->visibility() ||
m_style->zIndex() != style->zIndex() ||
m_style->hasAutoZIndex() != style->hasAutoZIndex())
document()->setDashboardRegionsDirty(true);
#endif
if ((m_style->hasAutoZIndex() != style->hasAutoZIndex() ||
m_style->zIndex() != style->zIndex() ||
m_style->visibility() != style->visibility()) && layer()) {
layer()->stackingContext()->dirtyZOrderLists();
if (m_style->hasAutoZIndex() != style->hasAutoZIndex() ||
m_style->visibility() != style->visibility())
layer()->dirtyZOrderLists();
}
}
d = m_style->diff(style);
// If we have no layer(), just treat a RepaintLayer hint as a normal Repaint.
if (d == RenderStyle::RepaintLayer && !layer())
d = RenderStyle::Repaint;
// The background of the root element or the body element could propagate up to
// the canvas. Just dirty the entire canvas when our style changes substantially.
if (d >= RenderStyle::Repaint && element() &&
(element()->hasTagName(htmlTag) || element()->hasTagName(bodyTag)))
canvas()->repaint();
else if (m_parent && !isText()) {
// Do a repaint with the old style first, e.g., for example if we go from
// having an outline to not having an outline.
if (d == RenderStyle::RepaintLayer) {
layer()->repaintIncludingDescendants();
if (!(m_style->clip() == style->clip()))
layer()->clearClipRects();
}
else if (d == RenderStyle::Repaint)
repaint();
}
// When a layout hint happens, we go ahead and do a repaint of the layer, since the layer could
// end up being destroyed.
if (d == RenderStyle::Layout && layer() &&
(m_style->position() != style->position() ||
m_style->zIndex() != style->zIndex() ||
m_style->hasAutoZIndex() != style->hasAutoZIndex() ||
!(m_style->clip() == style->clip()) ||
m_style->hasClip() != style->hasClip() ||
m_style->opacity() != style->opacity()))
layer()->repaintIncludingDescendants();
// When a layout hint happens and an object's position style changes, we have to do a layout
// to dirty the render tree using the old position value now.
if (d == RenderStyle::Layout && m_parent && m_style->position() != style->position())
markContainingBlocksForLayout();
if (isFloating() && (m_style->floating() != style->floating()))
// For changes in float styles, we need to conceivably remove ourselves
// from the floating objects list.
removeFromObjectLists();
else if (isPositioned() && (style->position() != AbsolutePosition && style->position() != FixedPosition))
// For changes in positioning styles, we need to conceivably remove ourselves
// from the positioned objects list.
removeFromObjectLists();
affectsParentBlock = m_style && isFloatingOrPositioned() &&
(!style->isFloating() && style->position() != AbsolutePosition && style->position() != FixedPosition)
&& parent() && (parent()->isBlockFlow() || parent()->isInlineFlow());
// reset style flags
m_floating = false;
m_positioned = false;
m_relPositioned = false;
m_paintBackground = false;
m_hasOverflowClip = false;
}
RenderStyle *oldStyle = m_style;
m_style = style;
updateBackgroundImages(oldStyle);
if (m_style)
m_style->ref();
if (oldStyle)
oldStyle->deref(renderArena());
setShouldPaintBackgroundOrBorder(m_style->hasBorder() || m_style->hasBackground() || m_style->hasAppearance());
if (affectsParentBlock)
handleDynamicFloatPositionChange();
// No need to ever schedule repaints from a style change of a text run, since
// we already did this for the parent of the text run.
if (d == RenderStyle::Layout && m_parent)
setNeedsLayoutAndMinMaxRecalc();
else if (m_parent && !isText() && (d == RenderStyle::RepaintLayer || d == RenderStyle::Repaint))
// Do a repaint with the new style now, e.g., for example if we go from
// not having an outline to having an outline.
repaint();
}
void RenderObject::setStyleInternal(RenderStyle* st)
{
if (m_style == st)
return;
if (m_style)
m_style->deref(renderArena());
m_style = st;
if (m_style)
m_style->ref();
}
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);
}
CachedImage* oldBorderImage = oldStyle ? oldStyle->borderImage().image() : 0;
CachedImage* newBorderImage = m_style ? m_style->borderImage().image() : 0;
if (oldBorderImage != newBorderImage) {
if (oldBorderImage)
oldBorderImage->deref(this);
if (newBorderImage)
newBorderImage->ref(this);
}
}
IntRect RenderObject::viewRect() const
{
return canvas()->viewRect();
}
bool RenderObject::absolutePosition(int &xPos, int &yPos, bool f)
{
RenderObject* o = parent();
if (o) {
o->absolutePosition(xPos, yPos, f);
yPos += o->borderTopExtra();
if (o->hasOverflowClip())
o->layer()->subtractScrollOffset(xPos, yPos);
return true;
}
else
{
xPos = yPos = 0;
return false;
}
}
IntRect RenderObject::caretRect(int offset, EAffinity affinity, int *extraWidthToEndOfLine)
{
if (extraWidthToEndOfLine)
*extraWidthToEndOfLine = 0;
return IntRect();
}
int RenderObject::paddingTop() const
{
int w = 0;
Length padding = m_style->paddingTop();
if (padding.isPercent())
w = containingBlock()->contentWidth();
w = padding.calcMinValue(w);
if ( isTableCell() && padding.isAuto() )
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.calcMinValue(w);
if ( isTableCell() && padding.isAuto() )
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.calcMinValue(w);
if ( isTableCell() && padding.isAuto() )
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.calcMinValue(w);
if ( isTableCell() && padding.isAuto() )
w = static_cast<const RenderTableCell *>(this)->table()->cellPadding();
return w;
}
int RenderObject::tabWidth() const
{
if (style()->collapseWhiteSpace())
return 0;
return containingBlock()->tabWidth(true);
}
RenderCanvas* RenderObject::canvas() const
{
return static_cast<RenderCanvas*>(document()->renderer());
}
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 (!isText() && pos == FixedPosition) {
// 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 (!isText() && pos == AbsolutePosition) {
// 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() == StaticPosition && !o->isRoot() && !o->isCanvas())
o = o->parent();
}
else
o = parent();
return o;
}
// This code has been written to anticipate the addition of CSS3-::outside and ::inside generated
// content (and perhaps XBL). That's why it uses the render tree and not the DOM tree.
RenderObject* RenderObject::hoverAncestor() const
{
return (!isInline() && continuation()) ? continuation() : parent();
}
bool RenderObject::isSelectionBorder() const
{
SelectionState st = selectionState();
return st == SelectionStart || st == SelectionEnd || st == SelectionBoth;
}
void RenderObject::removeFromObjectLists()
{
if (isFloating()) {
RenderBlock* outermostBlock = containingBlock();
for (RenderBlock* p = outermostBlock; p && !p->isCanvas(); p = p->containingBlock()) {
if (p->containsFloat(this))
outermostBlock = p;
}
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
{
Document* doc = document();
return doc ? doc->renderArena() : 0;
}
void RenderObject::remove()
{
document()->getAccObjectCache()->remove(this);
removeFromObjectLists();
if (parent())
parent()->removeChild(this);
deleteLineBoxWrapper();
}
bool RenderObject::documentBeingDestroyed() const
{
return !document()->renderer();
}
void RenderObject::destroy()
{
// By default no ref-counting. RenderWidget::destroy() doesn't call
// this function because it needs to do ref-counting. If anything
// in this function changes, be sure to fix RenderWidget::destroy() as well.
remove();
arenaDelete(document()->renderArena(), this);
}
void RenderObject::arenaDelete(RenderArena *arena, void *base)
{
if (m_style->backgroundImage())
m_style->backgroundImage()->deref(this);
if (m_style)
m_style->deref(arena);
#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);
}
VisiblePosition RenderObject::positionForCoordinates(int x, int y)
{
return VisiblePosition(element(), caretMinOffset(), DOWNSTREAM);
}
bool RenderObject::isDragging() const
{
return m_isDragging;
}
void RenderObject::updateDragState(bool dragOn)
{
bool valueChanged = (dragOn != m_isDragging);
m_isDragging = dragOn;
if (valueChanged && style()->affectedByDragRules())
element()->setChanged();
for (RenderObject* curr = firstChild(); curr; curr = curr->nextSibling())
curr->updateDragState(dragOn);
if (continuation())
continuation()->updateDragState(dragOn);
}
bool RenderObject::hitTest(NodeInfo& info, int x, int y, int tx, int ty, HitTestFilter hitTestFilter)
{
bool inside = false;
if (hitTestFilter != HitTestSelf) {
// First test the foreground layer (lines and inlines).
inside = nodeAtPoint(info, x, y, tx, ty, HitTestForeground);
// Test floats next.
if (!inside)
inside = nodeAtPoint(info, x, y, tx, ty, HitTestFloat);
// Finally test to see if the mouse is in the background (within a child block's background).
if (!inside)
inside = nodeAtPoint(info, x, y, tx, ty, HitTestChildBlockBackgrounds);
}
// See if the mouse is inside us but not any of our descendants
if (hitTestFilter != HitTestDescendants && !inside)
inside = nodeAtPoint(info, x, y, tx, ty, HitTestBlockBackground);
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());
}
bool RenderObject::nodeAtPoint(NodeInfo& info, int _x, int _y, int _tx, int _ty,
HitTestAction hitTestAction)
{
return false;
}
short RenderObject::verticalPositionHint( bool firstLine ) const
{
short vpos = m_verticalPosition;
if ( m_verticalPosition == PositionUndefined || firstLine ) {
vpos = getVerticalPosition( firstLine );
if ( !firstLine )
m_verticalPosition = vpos;
}
return vpos;
}
short RenderObject::getVerticalPosition( bool firstLine ) const
{
if (!isInline())
return 0;
// This method determines the vertical position for inline elements.
int vpos = 0;
EVerticalAlign va = style()->verticalAlign();
if ( va == TOP ) {
vpos = PositionTop;
} else if ( va == BOTTOM ) {
vpos = PositionBottom;
} else if ( va == LENGTH ) {
vpos = -style()->verticalAlignLength().calcValue( lineHeight( firstLine ) );
} else {
bool checkParent = parent()->isInline() && !parent()->isInlineBlockOrInlineTable() && parent()->style()->verticalAlign() != TOP && parent()->style()->verticalAlign() != BOTTOM;
vpos = checkParent ? parent()->verticalPositionHint( firstLine ) : 0;
// don't allow elements nested inside text-top to have a different valignment.
if ( va == BASELINE )
return vpos;
const Font &f = parent()->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) - f.ascent();
else if (va == MIDDLE)
vpos += - (int)(f.xHeight()/2) - lineHeight( firstLine )/2 + baselinePosition( firstLine );
else if (va == TEXT_BOTTOM) {
vpos += f.descent();
if (!isReplaced())
vpos -= font(firstLine).descent();
} else if ( va == BASELINE_MIDDLE )
vpos += - lineHeight( firstLine )/2 + baselinePosition( firstLine );
}
return vpos;
}
short RenderObject::lineHeight( bool firstLine, bool ) const
{
RenderStyle* s = style(firstLine);
Length lh = s->lineHeight();
// its "unset", choose nice default
if (lh.value() < 0)
return s->font().lineSpacing();
if (lh.isPercent())
return lh.calcMinValue(s->fontSize());
// its fixed
return lh.value();
}
short RenderObject::baselinePosition(bool firstLine, bool isRootLineBox) const
{
const Font& f = font(firstLine);
return f.ascent() + (lineHeight(firstLine, isRootLineBox) - f.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
if (m_recalcMinMax)
updateFirstLetter();
RenderObject *child = firstChild();
while( child ) {
int cmin = 0;
int cmax = 0;
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. Also do this for blocks or tables that
// are inline (i.e., inline-block and inline-table).
if ((!isInline() || isInlineBlockOrInlineTable()) && childrenInline())
m_minMaxKnown = false;
if ( !m_minMaxKnown )
calcMinMaxWidth();
m_recalcMinMax = false;
}
void RenderObject::scheduleRelayout()
{
if (!isCanvas()) return;
FrameView *view = static_cast<RenderCanvas *>(this)->view();
if (view)
view->scheduleRelayout();
}
void RenderObject::removeLeftoverAnonymousBoxes()
{
}
InlineBox* RenderObject::createInlineBox(bool, bool isRootLineBox, bool)
{
KHTMLAssert(!isRootLineBox);
return new (renderArena()) InlineBox(this);
}
void RenderObject::dirtyLineBoxes(bool, bool)
{
}
InlineBox* RenderObject::inlineBoxWrapper() const
{
return 0;
}
void RenderObject::setInlineBoxWrapper(InlineBox* b)
{
}
void RenderObject::deleteLineBoxWrapper()
{
}
RenderStyle* RenderObject::firstLineStyle() const
{
RenderStyle *s = m_style;
const RenderObject* obj = isText() ? parent() : this;
if (obj->isBlockFlow()) {
RenderBlock* firstLineBlock = obj->firstLineBlock();
if (firstLineBlock)
s = firstLineBlock->getPseudoStyle(RenderStyle::FIRST_LINE, style());
} else if (!obj->isAnonymous() && obj->isInlineFlow()) {
RenderStyle* parentStyle = obj->parent()->firstLineStyle();
if (parentStyle != obj->parent()->style()) {
// A first-line style is in effect. We need to cache a first-line style
// for ourselves.
style()->setHasPseudoStyle(RenderStyle::FIRST_LINE_INHERITED);
s = obj->getPseudoStyle(RenderStyle::FIRST_LINE_INHERITED, parentStyle);
}
}
return s;
}
RenderStyle* RenderObject::getPseudoStyle(RenderStyle::PseudoId pseudo, RenderStyle* parentStyle) const
{
if (!style()->hasPseudoStyle(pseudo))
return 0;
if (!parentStyle)
parentStyle = style();
RenderStyle* result = style()->getPseudoStyle(pseudo);
if (result)
return result;
Node* node = element();
if (isText())
node = element()->parentNode();
if (!node)
return 0;
if (pseudo == RenderStyle::FIRST_LINE_INHERITED)
result = document()->styleSelector()->createStyleForElement(static_cast<Element*>(node), parentStyle, false);
else
result = document()->styleSelector()->createPseudoStyleForElement(pseudo, static_cast<Element*>(node), parentStyle);
if (result) {
style()->addPseudoStyle(result);
result->deref(document()->renderArena());
}
return result;
}
void RenderObject::getTextDecorationColors(int decorations, Color& underline, Color& overline,
Color& linethrough, bool quirksMode)
{
RenderObject* curr = this;
do {
int currDecs = curr->style()->textDecoration();
if (currDecs) {
if (currDecs & UNDERLINE) {
decorations &= ~UNDERLINE;
underline = curr->style()->color();
}
if (currDecs & OVERLINE) {
decorations &= ~OVERLINE;
overline = curr->style()->color();
}
if (currDecs & LINE_THROUGH) {
decorations &= ~LINE_THROUGH;
linethrough = curr->style()->color();
}
}
curr = curr->parent();
if (curr && curr->isRenderBlock() && curr->continuation())
curr = curr->continuation();
} while (curr && decorations && (!quirksMode || !curr->element() ||
(!curr->element()->hasTagName(aTag) && !curr->element()->hasTagName(fontTag))));
// If we bailed out, use the element we bailed out at (typically a <font> or <a> element).
if (decorations && curr) {
if (decorations & UNDERLINE)
underline = curr->style()->color();
if (decorations & OVERLINE)
overline = curr->style()->color();
if (decorations & LINE_THROUGH)
linethrough = curr->style()->color();
}
}
void RenderObject::updateWidgetPosition()
{
}
DeprecatedValueList<DashboardRegionValue> RenderObject::computeDashboardRegions()
{
DeprecatedValueList<DashboardRegionValue> regions;
collectDashboardRegions(regions);
return regions;
}
void RenderObject::addDashboardRegions (DeprecatedValueList<DashboardRegionValue>& regions)
{
// Convert the style regions to absolute coordinates.
if (style()->visibility() != VISIBLE)
return;
DeprecatedValueList<StyleDashboardRegion> styleRegions = style()->dashboardRegions();
if (styleRegions.count() > 0) {
unsigned i, count = styleRegions.count();
for (i = 0; i < count; i++){
StyleDashboardRegion styleRegion = styleRegions[i];
int w = width();
int h = height();
DashboardRegionValue region;
region.label = styleRegion.label;
region.bounds = IntRect (
styleRegion.offset.left.value(),
styleRegion.offset.top.value(),
w - styleRegion.offset.left.value() - styleRegion.offset.right.value(),
h - styleRegion.offset.top.value() - styleRegion.offset.bottom.value());
region.type = styleRegion.type;
region.clip = region.bounds;
computeAbsoluteRepaintRect(region.clip);
if (region.clip.height() < 0) {
region.clip.setHeight(0);
region.clip.setWidth(0);
}
int x, y;
absolutePosition(x, y);
region.bounds.setX(x + styleRegion.offset.left.value());
region.bounds.setY(y + styleRegion.offset.top.value());
regions.append(region);
}
}
}
void RenderObject::collectDashboardRegions (DeprecatedValueList<DashboardRegionValue>& regions)
{
// RenderTexts don't have their own style, they just use their parent's style,
// so we don't want to include them.
if (isText())
return;
addDashboardRegions (regions);
for (RenderObject* curr = firstChild(); curr; curr = curr->nextSibling()) {
curr->collectDashboardRegions(regions);
}
}
void RenderObject::collectBorders(DeprecatedValueList<CollapsedBorderValue>& borderStyles)
{
for (RenderObject* curr = firstChild(); curr; curr = curr->nextSibling())
curr->collectBorders(borderStyles);
}
bool RenderObject::avoidsFloats() const
{
return isReplaced() || isTable() || hasOverflowClip() || isHR() || isFlexibleBox();
}
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 (avoidsFloats() && (style()->width().isAuto() || isHR() || (style()->htmlHacks() && !isTable())));
}
QChar RenderObject::backslashAsCurrencySymbol() const
{
if (Node *node = element())
if (Decoder *decoder = node->document()->decoder())
return decoder->encoding().backslashAsCurrencySymbol();
return '\\';
}
void RenderObject::imageChanged(CachedImage *image)
{
// Repaint when the background image or border image finishes loading.
// This is needed for RenderBox objects, and also for table objects that hold
// backgrounds that are then respected by the table cells (which are RenderBox
// subclasses). It would be even better to find a more elegant way of doing this that
// would avoid putting this function and the CachedObjectClient base class into RenderObject.
if (image && image->canRender() && parent()) {
if (canvas() && element() && (element()->hasTagName(htmlTag) || element()->hasTagName(bodyTag)))
canvas()->repaint(); // repaint the entire canvas since the background gets propagated up
else
repaint(); // repaint object, which is a box or a container with boxes inside it
}
}
bool RenderObject::willRenderImage(CachedImage*)
{
// Without visibility we won't render (and therefore don't care about animation).
if (style()->visibility() != VISIBLE)
return false;
// If we're not in a window (i.e., we're dormant from being put in the b/f cache or in a background tab)
// then we don't want to render either.
return !document()->inPageCache() && document()->view()->inWindow();
}
int RenderObject::maximalOutlineSize(PaintAction p) const
{
if (p != PaintActionOutline)
return 0;
return static_cast<RenderCanvas*>(document()->renderer())->maximalOutlineSize();
}
int RenderObject::caretMinOffset() const
{
return 0;
}
int RenderObject::caretMaxOffset() const
{
return 0;
}
unsigned RenderObject::caretMaxRenderedOffset() const
{
return 0;
}
int RenderObject::previousOffset (int current) const
{
int previousOffset = current - 1;
return previousOffset;
}
int RenderObject::nextOffset (int current) const
{
int nextOffset = current + 1;
return nextOffset;
}
InlineBox *RenderObject::inlineBox(int offset, EAffinity affinity)
{
return inlineBoxWrapper();
}
#if SVG_SUPPORT
FloatRect RenderObject::relativeBBox(bool) const
{
return FloatRect();
}
QMatrix RenderObject::localTransform() const
{
return QMatrix(1, 0, 0, 1, xPos(), yPos());
}
void RenderObject::setLocalTransform(const QMatrix&)
{
ASSERT(false);
}
QMatrix RenderObject::absoluteTransform() const
{
if (parent())
return localTransform() * parent()->absoluteTransform();
return localTransform();
}
#endif
}