Commit 07d9b679 authored by darin's avatar darin

Remove accidentally-checked-in file.


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@14647 268f45cc-cd09-0410-ab3c-d52691b4dbfc
parent 4e52462e
/**
* This file is part of the HTML widget for KDE.
*
* Copyright (C) 1999 Lars Knoll (knoll@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 "RenderCanvas.h"
#include "Document.h"
#include "Element.h"
#include "FrameView.h"
#include "GraphicsContext.h"
namespace WebCore {
//#define BOX_DEBUG
RenderCanvas::RenderCanvas(Node* node, FrameView *view)
: RenderBlock(node)
{
// Clear our anonymous bit, set because RenderObject assumes
// any renderer with document as the node is anonymous.
setIsAnonymous(false);
// init RenderObject attributes
setInline(false);
m_view = view;
// try to contrain the width to the views width
m_minWidth = 0;
m_height = 0;
m_width = m_minWidth;
m_maxWidth = m_minWidth;
setPositioned(true); // to 0,0 :)
m_printingMode = false;
m_printImages = true;
m_maximalOutlineSize = 0;
m_selectionStart = 0;
m_selectionEnd = 0;
m_selectionStartPos = -1;
m_selectionEndPos = -1;
// Create a new root layer for our layer hierarchy.
m_layer = new (node->document()->renderArena()) RenderLayer(this);
}
RenderCanvas::~RenderCanvas()
{
}
void RenderCanvas::calcHeight()
{
if (!m_printingMode && m_view)
m_height = m_view->visibleHeight();
}
void RenderCanvas::calcWidth()
{
if (!m_printingMode && m_view)
m_width = m_view->visibleWidth();
m_marginLeft = 0;
m_marginRight = 0;
}
void RenderCanvas::calcMinMaxWidth()
{
KHTMLAssert( !minMaxKnown() );
RenderBlock::calcMinMaxWidth();
m_maxWidth = m_minWidth;
setMinMaxKnown();
}
void RenderCanvas::layout()
{
KHTMLAssert(!view()->inLayout());
if (m_printingMode)
m_minWidth = m_width;
setChildNeedsLayout(true);
setMinMaxKnown(false);
for (RenderObject *c = firstChild(); c; c = c->nextSibling())
c->setChildNeedsLayout(true);
if ( recalcMinMax() )
recalcMinMaxWidths();
RenderBlock::layout();
int docw = docWidth();
int doch = docHeight();
if (!m_printingMode) {
setWidth(m_view->visibleWidth());
setHeight(m_view->visibleHeight());
}
// ### we could maybe do the call below better and only pass true if the docsize changed.
layoutPositionedObjects( true );
layer()->setHeight(max(doch, m_height));
layer()->setWidth(max(docw, m_width));
setNeedsLayout(false);
}
bool RenderCanvas::absolutePosition(int &xPos, int &yPos, bool f)
{
if ( f && m_view) {
xPos = m_view->contentsX();
yPos = m_view->contentsY();
} else
xPos = yPos = 0;
return true;
}
void RenderCanvas::paint(PaintInfo& i, int _tx, int _ty)
{
#ifdef DEBUG_LAYOUT
kdDebug( 6040 ) << renderName() << "(RenderCanvas) " << this << " ::paintObject() w/h = (" << width() << "/" << height() << ")" << endl;
#endif
// Cache the print rect because the dirty rect could get changed during painting.
if (m_printingMode)
setPrintRect(i.r);
// 1. paint background, borders etc
if (i.phase == PaintPhaseBlockBackground) {
paintBoxDecorations(i, _tx, _ty);
return;
}
// 2. paint contents
for (RenderObject *child = firstChild(); child; child = child->nextSibling())
if (!child->layer() && !child->isFloating())
child->paint(i, _tx, _ty);
if (m_view) {
_tx += m_view->contentsX();
_ty += m_view->contentsY();
}
// 3. paint floats.
if (i.phase == PaintPhaseFloat)
paintFloats(i, _tx, _ty);
#ifdef BOX_DEBUG
outlineBox(i.p, _tx, _ty);
#endif
}
void RenderCanvas::paintBoxDecorations(PaintInfo& i, int _tx, int _ty)
{
// Check to see if we are enclosed by a transparent layer. If so, we cannot blit
// when scrolling, and we need to use slow repaints.
Element* elt = element()->document()->ownerElement();
if (view() && elt) {
RenderLayer* layer = elt->renderer()->enclosingLayer();
if (layer->isTransparent() || layer->transparentAncestor())
view()->useSlowRepaints();
}
if ((firstChild() && firstChild()->style()->visibility() == VISIBLE) || !view())
return;
// This code typically only executes if the root element's visibility has been set to hidden.
// Only fill with white if we're the root document, since iframes/frames with
// no background in the child document should show the parent's background.
if (elt || view()->isTransparent())
view()->useSlowRepaints(); // The parent must show behind the child.
else
i.p->fillRect(i.r, Color(Color::white));
}
void RenderCanvas::repaintViewRectangle(const IntRect& ur, bool immediate)
{
if (m_printingMode || ur.width() == 0 || ur.height() == 0) return;
IntRect vr = viewRect();
if (m_view && ur.intersects(vr)) {
// We always just invalidate the root view, since we could be an iframe that is clipped out
// or even invisible.
IntRect r = intersection(ur, vr);
Element* elt = element()->document()->ownerElement();
if (!elt)
m_view->repaintRectangle(r, immediate);
else {
// Subtract out the contentsX and contentsY offsets to get our coords within the viewing
// rectangle.
r.move(-m_view->contentsX(), -m_view->contentsY());
RenderObject* obj = elt->renderer();
// FIXME: Hardcoded offsets here are not good.
int yFrameOffset = m_view->hasBorder() ? 2 : 0;
int xFrameOffset = m_view->hasBorder() ? 1 : 0;
r.move(obj->borderLeft() + obj->paddingLeft() + xFrameOffset,
obj->borderTop() + obj->paddingTop() + yFrameOffset);
obj->repaintRectangle(r, immediate);
}
}
}
IntRect RenderCanvas::getAbsoluteRepaintRect()
{
IntRect result;
if (m_view && !m_printingMode)
result = IntRect(m_view->contentsX(), m_view->contentsY(),
m_view->visibleWidth(), m_view->visibleHeight());
return result;
}
void RenderCanvas::computeAbsoluteRepaintRect(IntRect& r, bool f)
{
if (m_printingMode)
return;
if (f && m_view)
r.move(m_view->contentsX(), m_view->contentsY());
}
void RenderCanvas::absoluteRects(DeprecatedValueList<IntRect>& rects, int _tx, int _ty)
{
rects.append(IntRect(_tx, _ty, m_layer->width(), m_layer->height()));
}
RenderObject* rendererAfterPosition(RenderObject* object, unsigned offset)
{
if (!object)
return 0;
RenderObject* child = object->childAt(offset);
return child ? child : object->nextInPreOrderAfterChildren();
}
IntRect RenderCanvas::selectionRect() const
{
typedef HashMap<RenderObject*, SelectionInfo*> SelectionMap;
SelectionMap selectedObjects;
RenderObject* os = m_selectionStart;
RenderObject* stop = rendererAfterPosition(m_selectionEnd, m_selectionEndPos);
while (os && os != stop) {
if ((os->canBeSelectionLeaf() || os == m_selectionStart || os == m_selectionEnd) && os->selectionState() != SelectionNone) {
// Blocks are responsible for painting line gaps and margin gaps. They must be examined as well.
// assert(!selectedObjects.get(os));
selectedObjects.set(os, new SelectionInfo(os));
RenderBlock* cb = os->containingBlock();
while (cb && !cb->isCanvas()) {
SelectionInfo* blockInfo = selectedObjects.get(cb);
if (blockInfo)
break;
selectedObjects.set(cb, new SelectionInfo(cb));
cb = cb->containingBlock();
}
}
os = os->nextInPreOrder();
}
// Now create a single bounding box rect that encloses the whole selection.
IntRect selRect;
SelectionMap::iterator end = selectedObjects.end();
for (SelectionMap::iterator i = selectedObjects.begin(); i != end; ++i) {
SelectionInfo* info = i->second;
selRect.unite(info->rect());
delete info;
}
return selRect;
}
void RenderCanvas::setSelection(RenderObject *s, int sp, RenderObject *e, int ep)
{
// Make sure both our start and end objects are defined.
// Check www.msnbc.com and try clicking around to find the case where this happened.
if ((s && !e) || (e && !s))
return;
// Just return if the selection hasn't changed.
if (m_selectionStart == s && m_selectionStartPos == sp &&
m_selectionEnd == e && m_selectionEndPos == ep)
return;
// Record the old selected objects. These will be used later
// when we compare against the new selected objects.
int oldStartPos = m_selectionStartPos;
int oldEndPos = m_selectionEndPos;
// Objects each have a single selection rect to examine.
typedef HashMap<RenderObject*, SelectionInfo*> SelectedObjectMap;
SelectedObjectMap oldSelectedObjects;
SelectedObjectMap newSelectedObjects;
// Blocks contain selected objects and fill gaps between them, either on the left, right, or in between lines and blocks.
// In order to get the repaint rect right, we have to examine left, middle, and right rects individually, since otherwise
// the union of those rects might remain the same even when changes have occurred.
typedef HashMap<RenderBlock*, BlockSelectionInfo*> SelectedBlockMap;
SelectedBlockMap oldSelectedBlocks;
SelectedBlockMap newSelectedBlocks;
RenderObject* os = m_selectionStart;
RenderObject* stop = rendererAfterPosition(m_selectionEnd, m_selectionEndPos);
while (os && os != stop) {
if ((os->canBeSelectionLeaf() || os == m_selectionStart || os == m_selectionEnd) && os->selectionState() != SelectionNone) {
// Blocks are responsible for painting line gaps and margin gaps. They must be examined as well.
oldSelectedObjects.set(os, new SelectionInfo(os));
RenderBlock* cb = os->containingBlock();
while (cb && !cb->isCanvas()) {
BlockSelectionInfo* blockInfo = oldSelectedBlocks.get(cb);
if (blockInfo)
break;
oldSelectedBlocks.set(cb, new BlockSelectionInfo(cb));
cb = cb->containingBlock();
}
}
os = os->nextInPreOrder();
}
// Now clear the selection.
SelectedObjectMap::iterator oldObjectsEnd = oldSelectedObjects.end();
for (SelectedObjectMap::iterator i = oldSelectedObjects.begin(); i != oldObjectsEnd; ++i)
i->first->setSelectionState(SelectionNone);
// set selection start and end
m_selectionStart = s;
m_selectionStartPos = sp;
m_selectionEnd = e;
m_selectionEndPos = ep;
// Update the selection status of all objects between m_selectionStart and m_selectionEnd
if (s && s == e)
s->setSelectionState(SelectionBoth);
else {
if (s)
s->setSelectionState(SelectionStart);
if (e)
e->setSelectionState(SelectionEnd);
}
RenderObject* o = s;
stop = rendererAfterPosition(e, ep);
while (o && o != stop) {
if (o != s && o != e && o->canBeSelectionLeaf())
o->setSelectionState(SelectionInside);
o = o->nextInPreOrder();
}
// Now that the selection state has been updated for the new objects, walk them again and
// put them in the new objects list.
o = s;
while (o && o != stop) {
if ((o->canBeSelectionLeaf() || o == s || o == e) && o->selectionState() != SelectionNone) {
newSelectedObjects.set(o, new SelectionInfo(o));
RenderBlock* cb = o->containingBlock();
while (cb && !cb->isCanvas()) {
BlockSelectionInfo* blockInfo = newSelectedBlocks.get(cb);
if (blockInfo)
break;
newSelectedBlocks.set(cb, new BlockSelectionInfo(cb));
cb = cb->containingBlock();
}
}
o = o->nextInPreOrder();
}
if (!m_view)
return;
// Have any of the old selected objects changed compared to the new selection?
for (SelectedObjectMap::iterator i = oldSelectedObjects.begin(); i != oldObjectsEnd; ++i) {
RenderObject* obj = i->first;
SelectionInfo* newInfo = newSelectedObjects.get(obj);
SelectionInfo* oldInfo = i->second;
if (!newInfo || oldInfo->rect() != newInfo->rect() || oldInfo->state() != newInfo->state() ||
(m_selectionStart == obj && oldStartPos != m_selectionStartPos) ||
(m_selectionEnd == obj && oldEndPos != m_selectionEndPos)) {
m_view->updateContents(oldInfo->rect());
if (newInfo) {
m_view->updateContents(newInfo->rect());
newSelectedObjects.remove(obj);
delete newInfo;
}
}
delete oldInfo;
}
// Any new objects that remain were not found in the old objects dict, and so they need to be updated.
SelectedObjectMap::iterator newObjectsEnd = newSelectedObjects.end();
for (SelectedObjectMap::iterator i = newSelectedObjects.begin(); i != newObjectsEnd; ++i) {
SelectionInfo* newInfo = i->second;
m_view->updateContents(newInfo->rect());
delete newInfo;
}
// Have any of the old blocks changed?
SelectedBlockMap::iterator oldBlocksEnd = oldSelectedBlocks.end();
for (SelectedBlockMap::iterator i = oldSelectedBlocks.begin(); i != oldBlocksEnd; ++i) {
RenderBlock* block = i->first;
BlockSelectionInfo* newInfo = newSelectedBlocks.get(block);
BlockSelectionInfo* oldInfo = i->second;
if (!newInfo || oldInfo->rects() != newInfo->rects() || oldInfo->state() != newInfo->state()) {
m_view->updateContents(oldInfo->rects());
if (newInfo) {
m_view->updateContents(newInfo->rects());
newSelectedBlocks.remove(block);
delete newInfo;
}
}
delete oldInfo;
}
// Any new blocks that remain were not found in the old blocks dict, and so they need to be updated.
SelectedBlockMap::iterator newBlocksEnd = newSelectedBlocks.end();
for (SelectedBlockMap::iterator i = newSelectedBlocks.begin(); i != newBlocksEnd; ++i) {
BlockSelectionInfo* newInfo = i->second;
m_view->updateContents(newInfo->rects());
delete newInfo;
}
}
void RenderCanvas::clearSelection()
{
setSelection(0, -1, 0, -1);
}
void RenderCanvas::selectionStartEnd(int& spos, int& epos)
{
spos = m_selectionStartPos;
epos = m_selectionEndPos;
}
void RenderCanvas::updateWidgetPositions()
{
RenderObjectSet::iterator end = m_widgets.end();
for (RenderObjectSet::iterator it = m_widgets.begin(); it != end; ++it) {
(*it)->updateWidgetPosition();
}
}
void RenderCanvas::addWidget(RenderObject *o)
{
m_widgets.add(o);
}
void RenderCanvas::removeWidget(RenderObject *o)
{
m_widgets.remove(o);
}
IntRect RenderCanvas::viewRect() const
{
if (m_printingMode)
return IntRect(0, 0, m_width, m_height);
if (m_view)
return IntRect(m_view->contentsX(),
m_view->contentsY(),
m_view->visibleWidth(),
m_view->visibleHeight());
return IntRect();
}
int RenderCanvas::docHeight() const
{
int h;
if (m_printingMode || !m_view)
h = m_height;
else
h = m_view->visibleHeight();
int lowestPos = lowestPosition();
if( lowestPos > h )
h = lowestPos;
// FIXME: This doesn't do any margin collapsing.
// Instead of this dh computation we should keep the result
// when we call RenderBlock::layout.
int dh = 0;
for (RenderObject *c = firstChild(); c; c = c->nextSibling()) {
dh += c->height() + c->marginTop() + c->marginBottom();
}
if( dh > h )
h = dh;
return h;
}
int RenderCanvas::docWidth() const
{
int w;
if (m_printingMode || !m_view)
w = m_width;
else
w = m_view->visibleWidth();
int rightmostPos = rightmostPosition();
if( rightmostPos > w )
w = rightmostPos;
for (RenderObject *c = firstChild(); c; c = c->nextSibling()) {
int dw = c->width() + c->marginLeft() + c->marginRight();
if( dw > w )
w = dw;
}
return w;
}
// The idea here is to take into account what object is moving the pagination point, and
// thus choose the best place to chop it.
void RenderCanvas::setBestTruncatedAt(int y, RenderObject *forRenderer, bool forcedBreak)
{
// Nobody else can set a page break once we have a forced break.
if (m_forcedPageBreak) return;
// Forced breaks always win over unforced breaks.
if (forcedBreak) {
m_forcedPageBreak = true;
m_bestTruncatedAt = y;
return;
}
// prefer the widest object who tries to move the pagination point
int width = forRenderer->width();
if (width > m_truncatorWidth) {
m_truncatorWidth = width;
m_bestTruncatedAt = y;
}
}
}
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