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-rw-r--r--khtml/rendering/render_layer.cpp1830
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diff --git a/khtml/rendering/render_layer.cpp b/khtml/rendering/render_layer.cpp
deleted file mode 100644
index 2b7e93f1f..000000000
--- a/khtml/rendering/render_layer.cpp
+++ /dev/null
@@ -1,1830 +0,0 @@
-/*
- * Copyright (C) 2003 Apple Computer, Inc.
- * (C) 2006 Germain Garand <[email protected]>
- * (C) 2006 Allan Sandfeld Jense <[email protected]>
- *
- * Portions are Copyright (C) 1998 Netscape Communications Corporation.
- *
- * Other contributors:
- * Robert O'Callahan <[email protected]>
- * David Baron <[email protected]>
- * Christian Biesinger <[email protected]>
- * Randall Jesup <[email protected]>
- * Roland Mainz <[email protected]>
- * Josh Soref <[email protected]>
- * Boris Zbarsky <[email protected]>
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2.1 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
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- *
- * Alternatively, the contents of this file may be used under the terms
- * of either the Mozilla Public License Version 1.1, found at
- * http://www.mozilla.org/MPL/ (the "MPL") or the GNU General Public
- * License Version 2.0, found at http://www.fsf.org/copyleft/gpl.html
- * (the "GPL"), in which case the provisions of the MPL or the GPL are
- * applicable instead of those above. If you wish to allow use of your
- * version of this file only under the terms of one of those two
- * licenses (the MPL or the GPL) and not to allow others to use your
- * version of this file under the LGPL, indicate your decision by
- * deletingthe provisions above and replace them with the notice and
- * other provisions required by the MPL or the GPL, as the case may be.
- * If you do not delete the provisions above, a recipient may use your
- * version of this file under any of the LGPL, the MPL or the GPL.
- */
-
-//#define BOX_DEBUG
-
-#include "render_layer.h"
-#include <kdebug.h>
-#include <assert.h>
-#include "khtmlview.h"
-#include "render_canvas.h"
-#include "render_arena.h"
-#include "render_replaced.h"
-#include "xml/dom_docimpl.h"
-#include "xml/dom2_eventsimpl.h"
-#include "misc/htmltags.h"
-#include "html/html_blockimpl.h"
-#include "xml/dom_restyler.h"
-
-#include <tqscrollbar.h>
-#include <tqptrvector.h>
-#include <tqstyle.h>
-
-using namespace DOM;
-using namespace khtml;
-
-#ifdef APPLE_CHANGES
-TQScrollBar* RenderLayer::gScrollBar = 0;
-#endif
-
-#ifndef NDEBUG
-static bool inRenderLayerDetach;
-#endif
-
-void
-RenderScrollMediator::slotValueChanged()
-{
- m_layer->updateScrollPositionFromScrollbars();
-}
-
-RenderLayer::RenderLayer(RenderObject* object)
-: m_object( object ),
-m_parent( 0 ),
-m_previous( 0 ),
-m_next( 0 ),
-m_first( 0 ),
-m_last( 0 ),
-m_x( 0 ),
-m_y( 0 ),
-m_scrollX( 0 ),
-m_scrollY( 0 ),
-m_scrollWidth( 0 ),
-m_scrollHeight( 0 ),
-m_hBar( 0 ),
-m_vBar( 0 ),
-m_scrollMediator( 0 ),
-m_posZOrderList( 0 ),
-m_negZOrderList( 0 ),
-m_overflowList(0),
-m_zOrderListsDirty( true ),
-m_overflowListDirty(true),
-m_isOverflowOnly( shouldBeOverflowOnly() ),
-m_markedForRepaint( false ),
-m_hasOverlaidWidgets( false ),
-m_marquee( 0 )
-{
-}
-
-RenderLayer::~RenderLayer()
-{
- // Child layers will be deleted by their corresponding render objects, so
- // our destructor doesn't have to do anything.
- delete m_hBar;
- delete m_vBar;
- delete m_scrollMediator;
- delete m_posZOrderList;
- delete m_negZOrderList;
- delete m_overflowList;
- delete m_marquee;
-}
-
-void RenderLayer::updateLayerPosition()
-{
-
- // The canvas is sized to the docWidth/Height over in RenderCanvas::layout, so we
- // don't need to ever update our layer position here.
- if (renderer()->isCanvas())
- return;
-
- int x = m_object->xPos();
- int y = m_object->yPos() - m_object->borderTopExtra();
-
- if (!m_object->isPositioned()) {
- // We must adjust our position by walking up the render tree looking for the
- // nearest enclosing object with a layer.
- RenderObject* curr = m_object->parent();
- while (curr && !curr->layer()) {
- x += curr->xPos();
- y += curr->yPos();
- curr = curr->parent();
- }
- if (curr)
- y += curr->borderTopExtra();
- }
-
- if (m_object->isRelPositioned())
- static_cast<RenderBox*>(m_object)->relativePositionOffset(x, y);
-
- // Subtract our parent's scroll offset.
- if (m_object->isPositioned() && enclosingPositionedAncestor()) {
- RenderLayer* positionedParent = enclosingPositionedAncestor();
-
- // For positioned layers, we subtract out the enclosing positioned layer's scroll offset.
- positionedParent->subtractScrollOffset(x, y);
- positionedParent->checkInlineRelOffset(m_object, x, y);
- }
- else if (parent())
- parent()->subtractScrollOffset(x, y);
-
- setPos(x,y);
-}
-
-TQRegion RenderLayer::paintedRegion(RenderLayer* rootLayer)
-{
- updateZOrderLists();
- TQRegion r;
- if (m_negZOrderList) {
- uint count = m_negZOrderList->count();
- for (uint i = 0; i < count; i++) {
- RenderLayer* child = m_negZOrderList->at(i);
- r += child->paintedRegion(rootLayer);
- }
- }
- const RenderStyle *s= renderer()->style();
- if (s->visibility() == VISIBLE) {
- int x = 0; int y = 0;
- convertToLayerCoords(rootLayer,x,y);
- TQRect cr(x,y,width(),height());
- if ( s->backgroundImage() || s->backgroundColor().isValid() || s->hasBorder() ||
- renderer()->scrollsOverflow() || renderer()->isReplaced() ) {
- r += cr;
- } else {
- r += renderer()->visibleFlowRegion(x, y);
- }
- }
-
- if (m_posZOrderList) {
- uint count = m_posZOrderList->count();
- for (uint i = 0; i < count; i++) {
- RenderLayer* child = m_posZOrderList->at(i);
- r += child->paintedRegion(rootLayer);
- }
- }
- return r;
-}
-
-void RenderLayer::repaint( Priority p, bool markForRepaint )
-{
- if (markForRepaint && m_markedForRepaint)
- return;
- for (RenderLayer* child = firstChild(); child; child = child->nextSibling())
- child->repaint( p, markForRepaint );
- TQRect layerBounds, damageRect, fgrect;
- calculateRects(renderer()->canvas()->layer(), renderer()->viewRect(), layerBounds, damageRect, fgrect);
- m_visibleRect = damageRect.intersect( layerBounds );
- if (m_visibleRect.isValid())
- renderer()->canvas()->repaintViewRectangle( m_visibleRect.x(), m_visibleRect.y(), m_visibleRect.width(), m_visibleRect.height(), (p > NormalPriority) );
- if (markForRepaint)
- m_markedForRepaint = true;
-}
-
-void RenderLayer::updateLayerPositions(RenderLayer* rootLayer, bool doFullRepaint, bool checkForRepaint)
-{
- if (doFullRepaint) {
- m_object->repaint();
- checkForRepaint = doFullRepaint = false;
- }
-
- updateLayerPosition(); // For relpositioned layers or non-positioned layers,
- // we need to keep in sync, since we may have shifted relative
- // to our parent layer.
-
- if (m_hBar || m_vBar) {
- // Need to position the scrollbars.
- int x = 0;
- int y = 0;
- convertToLayerCoords(rootLayer, x, y);
- TQRect layerBounds = TQRect(x,y,width(),height());
- positionScrollbars(layerBounds);
- }
-
-#ifdef APPLE_CHANGES
- // FIXME: Child object could override visibility.
- if (checkForRepaint && (m_object->style()->visibility() == VISIBLE))
- m_object->repaintAfterLayoutIfNeeded(m_repaintRect, m_fullRepaintRect);
-#else
- if (checkForRepaint && m_markedForRepaint) {
- TQRect layerBounds, damageRect, fgrect;
- calculateRects(rootLayer, renderer()->viewRect(), layerBounds, damageRect, fgrect);
- TQRect vr = damageRect.intersect( layerBounds );
- if (vr != m_visibleRect && vr.isValid()) {
- renderer()->canvas()->repaintViewRectangle( vr.x(), vr.y(), vr.width(), vr.height() );
- m_visibleRect = vr;
- }
- }
- m_markedForRepaint = false;
-#endif
-
- for (RenderLayer* child = firstChild(); child; child = child->nextSibling())
- child->updateLayerPositions(rootLayer, doFullRepaint, checkForRepaint);
-
- // With all our children positioned, now update our marquee if we need to.
- if (m_marquee)
- m_marquee->updateMarqueePosition();
-}
-
-void RenderLayer::updateWidgetMasks(RenderLayer* rootLayer)
-{
- if (hasOverlaidWidgets() && !renderer()->canvas()->pagedMode()) {
- updateZOrderLists();
- uint count = m_posZOrderList ? m_posZOrderList->count() : 0;
- bool needUpdate = (count || !m_region.isNull());
- if (count) {
- TQScrollView* sv = m_object->document()->view();
- m_region = TQRect(0,0,sv->contentsWidth(),sv->contentsHeight());
-
- for (uint i = 0; i < count; i++) {
- RenderLayer* child = m_posZOrderList->at(i);
- if (child->zIndex() == 0 && child->renderer()->style()->position() == STATIC)
- continue; // we don't know the widget's exact stacking position within flow
- m_region -= child->paintedRegion(rootLayer);
- }
- } else {
- m_region = TQRegion();
- }
- if (needUpdate)
- renderer()->updateWidgetMasks();
- }
- for (RenderLayer* child = firstChild(); child; child = child->nextSibling())
- child->updateWidgetMasks(rootLayer);
-}
-
-short RenderLayer::width() const
-{
- int w = m_object->width();
- if (!m_object->hasOverflowClip())
- w = kMax(m_object->overflowWidth(), w);
- return w;
-}
-
-int RenderLayer::height() const
-{
- int h = m_object->height() + m_object->borderTopExtra() + m_object->borderBottomExtra();
- if (!m_object->hasOverflowClip())
- h = kMax(m_object->overflowHeight(), h);
- return h;
-}
-
-
-RenderLayer *RenderLayer::stackingContext() const
-{
- RenderLayer* curr = parent();
- for ( ; curr && !curr->m_object->isCanvas() &&
- curr->m_object->style()->hasAutoZIndex();
- curr = curr->parent());
- return curr;
-}
-
-RenderLayer* RenderLayer::enclosingPositionedAncestor() const
-{
- RenderLayer* curr = parent();
- for ( ; curr && !curr->m_object->isCanvas() &&
- !curr->m_object->isPositioned() && !curr->m_object->isRelPositioned();
- curr = curr->parent());
-
- return curr;
-}
-
-#ifdef APPLE_CHANGES
-bool RenderLayer::isTransparent()
-{
- return m_object->style()->opacity() < 1.0f;
-}
-
-RenderLayer* RenderLayer::transparentAncestor()
-{
- RenderLayer* curr = parent();
- for ( ; curr && curr->m_object->style()->opacity() == 1.0f; curr = curr->parent());
- return curr;
-}
-#endif
-
-void* RenderLayer::operator new(size_t sz, RenderArena* renderArena) throw()
-{
- return renderArena->allocate(sz);
-}
-
-void RenderLayer::operator delete(void* ptr, size_t sz)
-{
- assert(inRenderLayerDetach);
-
- // Stash size where detach can find it.
- *(size_t *)ptr = sz;
-}
-
-void RenderLayer::detach(RenderArena* renderArena)
-{
-#ifndef NDEBUG
- inRenderLayerDetach = true;
-#endif
- delete this;
-#ifndef NDEBUG
- inRenderLayerDetach = false;
-#endif
-
- // Recover the size left there for us by operator delete and free the memory.
- renderArena->free(*(size_t *)this, this);
-}
-
-void RenderLayer::addChild(RenderLayer *child, RenderLayer* beforeChild)
-{
- RenderLayer* prevSibling = beforeChild ? beforeChild->previousSibling() : lastChild();
- if (prevSibling) {
- child->setPreviousSibling(prevSibling);
- prevSibling->setNextSibling(child);
- }
- else
- setFirstChild(child);
-
- if (beforeChild) {
- beforeChild->setPreviousSibling(child);
- child->setNextSibling(beforeChild);
- }
- else
- setLastChild(child);
-
- child->setParent(this);
-
- if (child->isOverflowOnly())
- dirtyOverflowList();
- else {
- // Dirty the z-order list in which we are contained. The stackingContext() can be null in the
- // case where we're building up generated content layers. This is ok, since the lists will start
- // off dirty in that case anyway.
- RenderLayer* stackingContext = child->stackingContext();
- if (stackingContext)
- stackingContext->dirtyZOrderLists();
- }
-}
-
-RenderLayer* RenderLayer::removeChild(RenderLayer* oldChild)
-{
- // remove the child
- if (oldChild->previousSibling())
- oldChild->previousSibling()->setNextSibling(oldChild->nextSibling());
- if (oldChild->nextSibling())
- oldChild->nextSibling()->setPreviousSibling(oldChild->previousSibling());
-
- if (m_first == oldChild)
- m_first = oldChild->nextSibling();
- if (m_last == oldChild)
- m_last = oldChild->previousSibling();
-
- if (oldChild->isOverflowOnly())
- dirtyOverflowList();
- else {
- // Dirty the z-order list in which we are contained. When called via the
- // reattachment process in removeOnlyThisLayer, the layer may already be disconnected
- // from the main layer tree, so we need to null-check the |stackingContext| value.
- RenderLayer* stackingContext = oldChild->stackingContext();
- if (stackingContext)
- stackingContext->dirtyZOrderLists();
- }
-
- oldChild->setPreviousSibling(0);
- oldChild->setNextSibling(0);
- oldChild->setParent(0);
-
- return oldChild;
-}
-
-void RenderLayer::removeOnlyThisLayer()
-{
- if (!m_parent)
- return;
-
- // Remove us from the parent.
- RenderLayer* parent = m_parent;
- RenderLayer* nextSib = nextSibling();
- parent->removeChild(this);
-
- // Now walk our kids and reattach them to our parent.
- RenderLayer* current = m_first;
- while (current) {
- RenderLayer* next = current->nextSibling();
- removeChild(current);
- parent->addChild(current, nextSib);
- current = next;
- }
-
- detach(renderer()->renderArena());
-}
-
-void RenderLayer::insertOnlyThisLayer()
-{
- if (!m_parent && renderer()->parent()) {
- // We need to connect ourselves when our renderer() has a parent.
- // Find our enclosingLayer and add ourselves.
- RenderLayer* parentLayer = renderer()->parent()->enclosingLayer();
- if (parentLayer)
- parentLayer->addChild(this,
- renderer()->parent()->findNextLayer(parentLayer, renderer()));
- }
-
- // Remove all descendant layers from the hierarchy and add them to the new position.
- for (RenderObject* curr = renderer()->firstChild(); curr; curr = curr->nextSibling())
- curr->moveLayers(m_parent, this);
-}
-
-void RenderLayer::convertToLayerCoords(const RenderLayer* ancestorLayer, int& x, int& y) const
-{
- if (ancestorLayer == this)
- return;
-
- if (m_object->style()->position() == FIXED) {
- // Add in the offset of the view. We can obtain this by calling
- // absolutePosition() on the RenderCanvas.
- int xOff, yOff;
- m_object->absolutePosition(xOff, yOff, true);
- x += xOff;
- y += yOff;
- return;
- }
-
- RenderLayer* parentLayer;
- if (m_object->style()->position() == ABSOLUTE)
- parentLayer = enclosingPositionedAncestor();
- else
- parentLayer = parent();
-
- if (!parentLayer) return;
-
- parentLayer->convertToLayerCoords(ancestorLayer, x, y);
-
- x += xPos();
- y += yPos();
-}
-
-void RenderLayer::scrollOffset(int& x, int& y)
-{
- x += scrollXOffset();
- y += scrollYOffset();
-}
-
-void RenderLayer::subtractScrollOffset(int& x, int& y)
-{
- x -= scrollXOffset();
- y -= scrollYOffset();
-}
-
-void RenderLayer::checkInlineRelOffset(const RenderObject* o, int& x, int& y)
-{
- if(o->style()->position() != ABSOLUTE || !renderer()->isRelPositioned() || !renderer()->isInlineFlow())
- return;
-
- // Our renderer is an enclosing relpositioned inline, we need to add in the offset of the first line
- // box from the rest of the content, but only in the cases where we know our descendant is positioned
- // relative to the inline itself.
- assert( o->container() == m_object );
-
- RenderFlow* flow = static_cast<RenderFlow*>(m_object);
- int sx = 0, sy = 0;
- if (flow->firstLineBox()) {
- if (flow->style()->direction() == LTR)
- sx = flow->firstLineBox()->xPos();
- else
- sx = flow->lastLineBox()->xPos();
- sy = flow->firstLineBox()->yPos();
- } else {
- sx = flow->staticX(); // ###
- sy = flow->staticY();
- }
- bool isInlineType = o->style()->isOriginalDisplayInlineType();
-
- if (!o->hasStaticX())
- x += sx;
-
- // Despite the positioned child being a block display type inside an inline, we still keep
- // its x locked to our left. Arguably the correct behavior would be to go flush left to
- // the block that contains us, but that isn't what other browsers do.
- if (o->hasStaticX() && !isInlineType)
- // Avoid adding in the left border/padding of the containing block twice. Subtract it out.
- x += sx - (o->containingBlock()->borderLeft() + o->containingBlock()->paddingLeft());
-
- if (!o->hasStaticY())
- y += sy;
-}
-
-void RenderLayer::scrollToOffset(int x, int y, bool updateScrollbars, bool repaint)
-{
- if (renderer()->style()->overflowX() != OMARQUEE || !renderer()->hasOverflowClip()) {
- if (x < 0) x = 0;
- if (y < 0) y = 0;
-
- // Call the scrollWidth/Height functions so that the dimensions will be computed if they need
- // to be (for overflow:hidden blocks).
- // ### merge the scrollWidth()/scrollHeight() methods
- int maxX = m_scrollWidth - m_object->clientWidth();
- int maxY = m_scrollHeight - m_object->clientHeight();
-
- if (x > maxX) x = maxX;
- if (y > maxY) y = maxY;
- }
-
- // FIXME: Eventually, we will want to perform a blit. For now never
- // blit, since the check for blitting is going to be very
- // complicated (since it will involve testing whether our layer
- // is either occluded by another layer or clipped by an enclosing
- // layer or contains fixed backgrounds, etc.).
- m_scrollX = x;
- m_scrollY = y;
-
- // Update the positions of our child layers.
- RenderLayer* rootLayer = root();
- for (RenderLayer* child = firstChild(); child; child = child->nextSibling())
- child->updateLayerPositions(rootLayer);
-
- // Fire the scroll DOM event.
- m_object->element()->dispatchHTMLEvent(EventImpl::SCROLL_EVENT, true, false);
-
- // Just schedule a full repaint of our object.
- if (repaint)
- m_object->repaint(RealtimePriority);
-
- if (updateScrollbars) {
- if (m_hBar)
- m_hBar->setValue(m_scrollX);
- if (m_vBar)
- m_vBar->setValue(m_scrollY);
- }
-}
-
-void RenderLayer::updateScrollPositionFromScrollbars()
-{
- bool needUpdate = false;
- int newX = m_scrollX;
- int newY = m_scrollY;
-
- if (m_hBar) {
- newX = m_hBar->value();
- if (newX != m_scrollX)
- needUpdate = true;
- }
-
- if (m_vBar) {
- newY = m_vBar->value();
- if (newY != m_scrollY)
- needUpdate = true;
- }
-
- if (needUpdate)
- scrollToOffset(newX, newY, false);
-}
-
-void
-RenderLayer::showScrollbar(Qt::Orientation o, bool show)
-{
- TQScrollBar *sb = (o == Qt::Horizontal) ? m_hBar : m_vBar;
-
- if (show && !sb) {
- TQScrollView* scrollView = m_object->document()->view();
- sb = new TQScrollBar(o, scrollView, "__khtml");
- scrollView->addChild(sb, 0, -50000);
- sb->setBackgroundMode(TQWidget::NoBackground);
- sb->show();
- if (!m_scrollMediator)
- m_scrollMediator = new RenderScrollMediator(this);
- m_scrollMediator->connect(sb, TQT_SIGNAL(valueChanged(int)), TQT_SLOT(slotValueChanged()));
- }
- else if (!show && sb) {
- delete sb;
- sb = 0;
- }
-
- if (o == Qt::Horizontal)
- m_hBar = sb;
- else
- m_vBar = sb;
-}
-
-int RenderLayer::verticalScrollbarWidth()
-{
- if (!m_vBar)
- return 0;
-
-#ifdef APPLE_CHANGES
- return m_vBar->width();
-#else
- return m_vBar->style().pixelMetric(TQStyle::PM_ScrollBarExtent);
-#endif
-
-}
-
-int RenderLayer::horizontalScrollbarHeight()
-{
- if (!m_hBar)
- return 0;
-
-#ifdef APPLE_CHANGES
- return m_hBar->height();
-#else
- return m_hBar->style().pixelMetric(TQStyle::PM_ScrollBarExtent);
-#endif
-
-}
-
-void RenderLayer::positionScrollbars(const TQRect& absBounds)
-{
-#ifdef APPLE_CHANGES
- if (m_vBar) {
- scrollView->addChild(m_vBar, absBounds.x()+absBounds.width()-m_object->borderRight()-m_vBar->width(),
- absBounds.y()+m_object->borderTop());
- m_vBar->resize(m_vBar->width(), absBounds.height() -
- (m_object->borderTop()+m_object->borderBottom()) -
- (m_hBar ? m_hBar->height()-1 : 0));
- }
-
- if (m_hBar) {
- scrollView->addChild(m_hBar, absBounds.x()+m_object->borderLeft(),
- absBounds.y()+absBounds.height()-m_object->borderBottom()-m_hBar->height());
- m_hBar->resize(absBounds.width() - (m_object->borderLeft()+m_object->borderRight()) -
- (m_vBar ? m_vBar->width()-1 : 0), m_hBar->height());
- }
-#else
- int tx = absBounds.x();
- int ty = absBounds.y();
- int bl = m_object->borderLeft();
- int bt = m_object->borderTop();
- int w = width() - bl - m_object->borderRight();
- int h = height() - bt - m_object->borderBottom();
-
- if (w <= 0 || h <= 0 || (!m_vBar && !m_hBar))
- return;
-
- TQScrollView* scrollView = m_object->document()->view();
-
- tx += bl;
- ty += bt;
-
- TQScrollBar *b = m_hBar;
- if (!m_hBar)
- b = m_vBar;
- int sw = b->style().pixelMetric(TQStyle::PM_ScrollBarExtent);
-
- if (m_vBar) {
- TQRect vBarRect = TQRect(tx + w - sw + 1, ty, sw, h - (m_hBar ? sw : 0) + 1);
- m_vBar->resize(vBarRect.width(), vBarRect.height());
- scrollView->addChild(m_vBar, vBarRect.x(), vBarRect.y());
- }
-
- if (m_hBar) {
- TQRect hBarRect = TQRect(tx, ty + h - sw + 1, w - (m_vBar ? sw : 0) + 1, sw);
- m_hBar->resize(hBarRect.width(), hBarRect.height());
- scrollView->addChild(m_hBar, hBarRect.x(), hBarRect.y());
- }
-#endif
-}
-
-#define LINE_STEP 10
-#define PAGE_KEEP 40
-
-void RenderLayer::checkScrollbarsAfterLayout()
-{
- int rightPos = m_object->rightmostPosition(true);
- int bottomPos = m_object->lowestPosition(true);
-
-/* TODO
- m_scrollLeft = m_object->leftmostPosition(true);
- m_scrollTop = m_object->highestPosition(true);
-*/
-
- int clientWidth = m_object->clientWidth();
- int clientHeight = m_object->clientHeight();
- m_scrollWidth = clientWidth;
- m_scrollHeight = clientHeight;
-
- if (rightPos - m_object->borderLeft() > m_scrollWidth)
- m_scrollWidth = rightPos - m_object->borderLeft();
- if (bottomPos - m_object->borderTop() > m_scrollHeight)
- m_scrollHeight = bottomPos - m_object->borderTop();
-
- bool needHorizontalBar = rightPos > width();
- bool needVerticalBar = bottomPos > height();
-
- bool haveHorizontalBar = m_hBar && m_hBar->isEnabled();
- bool haveVerticalBar = m_vBar && m_vBar->isEnabled();
-
- bool hasOvf = m_object->hasOverflowClip();
-
- // overflow:scroll should just enable/disable.
- if (hasOvf && m_object->style()->overflowX() == OSCROLL)
- m_hBar->setEnabled(needHorizontalBar);
- if (hasOvf && m_object->style()->overflowY() == OSCROLL)
- m_vBar->setEnabled(needVerticalBar);
-
- // overflow:auto may need to lay out again if scrollbars got added/removed.
- bool scrollbarsChanged = (hasOvf && m_object->style()->overflowX() == OAUTO && haveHorizontalBar != needHorizontalBar)
- || (hasOvf && m_object->style()->overflowY() == OAUTO && haveVerticalBar != needVerticalBar);
- if (scrollbarsChanged) {
- if (m_object->style()->overflowX() == OAUTO) {
- showScrollbar(Qt::Horizontal, needHorizontalBar);
- if (m_hBar)
- m_hBar->setEnabled(true);
- }
- if (m_object->style()->overflowY() == OAUTO) {
- showScrollbar(Qt::Vertical, needVerticalBar);
- if (m_vBar)
- m_vBar->setEnabled(true);
- }
-
- m_object->setNeedsLayout(true);
- if (m_object->isRenderBlock())
- static_cast<RenderBlock*>(m_object)->layoutBlock(true);
- else
- m_object->layout();
- return;
- }
-
- // Set up the range (and page step/line step).
- if (m_hBar) {
- int pageStep = (clientWidth-PAGE_KEEP);
- if (pageStep < 0) pageStep = clientWidth;
- m_hBar->setSteps(LINE_STEP, pageStep);
-#ifdef APPLE_CHANGES
- m_hBar->setKnobProportion(clientWidth, m_scrollWidth);
-#else
- m_hBar->setRange(0, needHorizontalBar ? m_scrollWidth-clientWidth : 0);
-#endif
- }
- if (m_vBar) {
- int pageStep = (clientHeight-PAGE_KEEP);
- if (pageStep < 0) pageStep = clientHeight;
- m_vBar->setSteps(LINE_STEP, pageStep);
-#ifdef APPLE_CHANGES
- m_vBar->setKnobProportion(clientHeight, m_scrollHeight);
-#else
- m_vBar->setRange(0, needVerticalBar ? m_scrollHeight-clientHeight : 0);
-#endif
- }
-}
-
-void RenderLayer::paintScrollbars(RenderObject::PaintInfo& pI)
-{
-#ifdef APPLE_CHANGES
- if (m_hBar)
- m_hBar->paint(p, damageRect);
- if (m_vBar)
- m_vBar->paint(p, damageRect);
-#else
- if (!m_object->element())
- return;
-
- TQScrollView* scrollView = m_object->document()->view();
- if (m_hBar) {
- int x = m_hBar->x();
- int y = m_hBar->y();
- scrollView->viewportToContents(x, y, x, y);
- RenderWidget::paintWidget(pI, m_hBar, x, y);
- }
- if (m_vBar) {
- int x = m_vBar->x();
- int y = m_vBar->y();
- scrollView->viewportToContents(x, y, x, y);
- RenderWidget::paintWidget(pI, m_vBar, x, y);
- }
-#endif
-}
-
-void RenderLayer::paint(TQPainter *p, const TQRect& damageRect, bool selectionOnly)
-{
- paintLayer(this, p, damageRect, selectionOnly);
-}
-
-static void setClip(TQPainter* p, const TQRect& paintDirtyRect, const TQRect& clipRect)
-{
- if (paintDirtyRect == clipRect)
- return;
- p->save();
-
-#ifdef APPLE_CHANGES
- p->addClip(clipRect);
-#else
-
- TQRect clippedRect = p->xForm(clipRect);
- TQRegion creg(clippedRect);
- TQRegion old = p->clipRegion();
- if (!old.isNull())
- creg = old.intersect(creg);
- p->setClipRegion(creg);
-#endif
-
-}
-
-static void restoreClip(TQPainter* p, const TQRect& paintDirtyRect, const TQRect& clipRect)
-{
- if (paintDirtyRect == clipRect)
- return;
- p->restore();
-}
-
-void RenderLayer::paintLayer(RenderLayer* rootLayer, TQPainter *p,
- const TQRect& paintDirtyRect, bool selectionOnly)
-{
- // Calculate the clip rects we should use.
- TQRect layerBounds, damageRect, clipRectToApply;
- calculateRects(rootLayer, paintDirtyRect, layerBounds, damageRect, clipRectToApply);
- int x = layerBounds.x();
- int y = layerBounds.y();
-
- // Ensure our lists are up-to-date.
- updateZOrderLists();
- updateOverflowList();
-
-#ifdef APPLE_CHANGES
- // Set our transparency if we need to.
- if (isTransparent())
- p->beginTransparencyLayer(renderer()->style()->opacity());
-#endif
-
- // We want to paint our layer, but only if we intersect the damage rect.
- bool shouldPaint = intersectsDamageRect(layerBounds, damageRect);
- if (shouldPaint && !selectionOnly) {
- // Paint our background first, before painting any child layers.
- if (!damageRect.isEmpty()) {
- // Establish the clip used to paint our background.
- setClip(p, paintDirtyRect, damageRect);
-
- // Paint the background.
- RenderObject::PaintInfo paintInfo(p, damageRect, PaintActionElementBackground);
- renderer()->paint(paintInfo,
- x - renderer()->xPos(), y - renderer()->yPos() + renderer()->borderTopExtra());
-
- // Position our scrollbars.
- positionScrollbars(layerBounds);
-
- // Our scrollbar widgets paint exactly when we tell them to, so that they work properly with
- // z-index. We paint after we painted the background/border, so that the scrollbars will
- // sit above the background/border.
- paintScrollbars(paintInfo);
-
- // Restore the clip.
- restoreClip(p, paintDirtyRect, damageRect);
- }
- }
-
- // Now walk the sorted list of children with negative z-indices.
- if (m_negZOrderList) {
- uint count = m_negZOrderList->count();
- for (uint i = 0; i < count; i++) {
- RenderLayer* child = m_negZOrderList->at(i);
- child->paintLayer(rootLayer, p, paintDirtyRect, selectionOnly);
- }
- }
-
- // Now establish the appropriate clip and paint our child RenderObjects.
- if (shouldPaint && !clipRectToApply.isEmpty()) {
- // Set up the clip used when painting our children.
- setClip(p, paintDirtyRect, clipRectToApply);
-
- RenderObject::PaintInfo paintInfo(p, clipRectToApply, PaintActionSelection);
-
- int tx = x - renderer()->xPos();
- int ty = y - renderer()->yPos() + renderer()->borderTopExtra();
-
- if (selectionOnly)
- renderer()->paint(paintInfo, tx, ty);
- else {
- paintInfo.phase = PaintActionChildBackgrounds;
- renderer()->paint(paintInfo, tx, ty);
- paintInfo.phase = PaintActionFloat;
- renderer()->paint(paintInfo, tx, ty);
- paintInfo.phase = PaintActionForeground;
- renderer()->paint(paintInfo, tx, ty);
- RenderCanvas *rc = static_cast<RenderCanvas*>(renderer()->document()->renderer());
- if (rc->maximalOutlineSize()) {
- paintInfo.phase = PaintActionOutline;
- renderer()->paint(paintInfo, tx, ty);
- }
- if (rc->selectionStart() && rc->selectionEnd()) {
- paintInfo.phase = PaintActionSelection;
- renderer()->paint(paintInfo, tx, ty);
- }
- }
-
- // Now restore our clip.
- restoreClip(p, paintDirtyRect, clipRectToApply);
- }
-
- // Paint any child layers that have overflow.
- if (m_overflowList)
- for (TQValueList<RenderLayer*>::iterator it = m_overflowList->begin(); it != m_overflowList->end(); ++it)
- (*it)->paintLayer(rootLayer, p, paintDirtyRect, selectionOnly);
-
- // Now walk the sorted list of children with positive z-indices.
- if (m_posZOrderList) {
- uint count = m_posZOrderList->count();
- for (uint i = 0; i < count; i++) {
- RenderLayer* child = m_posZOrderList->at(i);
- child->paintLayer(rootLayer, p, paintDirtyRect, selectionOnly);
- }
- }
-
-#ifdef BOX_DEBUG
- {
- int ax=0;
- int ay=0;
- renderer()->absolutePosition( ax, ay );
- p->setPen(TQPen(TQColor("yellow"), 1, Qt::DotLine));
- p->setBrush( Qt::NoBrush );
- p->drawRect(ax, ay, width(), height());
- }
-#endif
-
-#ifdef APPLE_CHANGES
- // End our transparency layer
- if (isTransparent())
- p->endTransparencyLayer();
-#endif
-}
-
-bool RenderLayer::nodeAtPoint(RenderObject::NodeInfo& info, int x, int y)
-{
-#ifdef APPLE_CHANGES
- // Clear our our scrollbar variable
- RenderLayer::gScrollBar = 0;
-#endif
-
- int stx = m_x;
- int sty = m_y;
-
-#ifdef __GNUC__
-#warning HACK
-#endif
- if (renderer()->isCanvas()) {
- stx += static_cast<RenderCanvas*>(renderer())->view()->contentsX();
- sty += static_cast<RenderCanvas*>(renderer())->view()->contentsY();
- }
-
- TQRect damageRect(stx,sty, width(), height());
- RenderLayer* insideLayer = nodeAtPointForLayer(this, info, x, y, damageRect);
-
- // Now determine if the result is inside an anchor.
- DOM::NodeImpl* node = info.innerNode();
- while (node) {
- if (node->hasAnchor() && !info.URLElement())
- info.setURLElement(node);
- node = node->parentNode();
- }
-
- // Next set up the correct :hover/:active state along the new chain.
- updateHoverActiveState(info);
-
- // Now return whether we were inside this layer (this will always be true for the root
- // layer).
- return insideLayer;
-}
-
-RenderLayer* RenderLayer::nodeAtPointForLayer(RenderLayer* rootLayer, RenderObject::NodeInfo& info,
- int xMousePos, int yMousePos, const TQRect& hitTestRect)
-{
- // Calculate the clip rects we should use.
- TQRect layerBounds, bgRect, fgRect;
- calculateRects(rootLayer, hitTestRect, layerBounds, bgRect, fgRect);
-
- // Ensure our lists are up-to-date.
- updateZOrderLists();
- updateOverflowList();
-
- // This variable tracks which layer the mouse ends up being inside. The minute we find an insideLayer,
- // we are done and can return it.
- RenderLayer* insideLayer = 0;
-
- // Begin by walking our list of positive layers from highest z-index down to the lowest
- // z-index.
- if (m_posZOrderList) {
- uint count = m_posZOrderList->count();
- for (int i = count-1; i >= 0; i--) {
- RenderLayer* child = m_posZOrderList->at(i);
- insideLayer = child->nodeAtPointForLayer(rootLayer, info, xMousePos, yMousePos, hitTestRect);
- if (insideLayer)
- return insideLayer;
- }
- }
-
- // Now check our overflow objects.
- if (m_overflowList) {
- TQValueList<RenderLayer*>::iterator it = m_overflowList->end();
- for (--it; it != m_overflowList->end(); --it) {
- insideLayer = (*it)->nodeAtPointForLayer(rootLayer, info, xMousePos, yMousePos, hitTestRect);
- if (insideLayer)
- return insideLayer;
- }
- }
-
- // Next we want to see if the mouse pos is inside the child RenderObjects of the layer.
- if (containsPoint(xMousePos, yMousePos, fgRect) &&
- renderer()->nodeAtPoint(info, xMousePos, yMousePos,
- layerBounds.x() - renderer()->xPos(),
- layerBounds.y() - renderer()->yPos() + m_object->borderTopExtra(),
- HitTestChildrenOnly)) {
- if (info.innerNode() != m_object->element())
- return this;
- }
-
- // Now check our negative z-index children.
- if (m_negZOrderList) {
- uint count = m_negZOrderList->count();
- for (int i = count-1; i >= 0; i--) {
- RenderLayer* child = m_negZOrderList->at(i);
- insideLayer = child->nodeAtPointForLayer(rootLayer, info, xMousePos, yMousePos, hitTestRect);
- if (insideLayer)
- return insideLayer;
- }
- }
-
- // Next we want to see if the mouse pos is inside this layer but not any of its children.
- if (containsPoint(xMousePos, yMousePos, bgRect) &&
- renderer()->nodeAtPoint(info, xMousePos, yMousePos,
- layerBounds.x() - renderer()->xPos(),
- layerBounds.y() - renderer()->yPos() + m_object->borderTopExtra(),
- HitTestSelfOnly))
- return this;
-
- // No luck.
- return 0;
-}
-
-void RenderLayer::calculateClipRects(const RenderLayer* rootLayer, TQRect& overflowClipRect,
- TQRect& posClipRect, TQRect& fixedClipRect)
-{
- if (parent())
- parent()->calculateClipRects(rootLayer, overflowClipRect, posClipRect, fixedClipRect);
-
- switch (m_object->style()->position()) {
- // A fixed object is essentially the root of its containing block hierarchy, so when
- // we encounter such an object, we reset our clip rects to the fixedClipRect.
- case FIXED:
- posClipRect = fixedClipRect;
- overflowClipRect = fixedClipRect;
- break;
- case ABSOLUTE:
- overflowClipRect = posClipRect;
- break;
- case RELATIVE:
- posClipRect = overflowClipRect;
- break;
- default:
- break;
- }
-
- // Update the clip rects that will be passed to child layers.
- if (m_object->hasOverflowClip() || m_object->hasClip()) {
- // This layer establishes a clip of some kind.
- int x = 0;
- int y = 0;
- convertToLayerCoords(rootLayer, x, y);
-
- if (m_object->hasOverflowClip()) {
- TQRect newOverflowClip = m_object->getOverflowClipRect(x,y);
- overflowClipRect = newOverflowClip.intersect(overflowClipRect);
- if (m_object->isPositioned() || m_object->isRelPositioned())
- posClipRect = newOverflowClip.intersect(posClipRect);
- }
- if (m_object->hasClip()) {
- TQRect newPosClip = m_object->getClipRect(x,y);
- posClipRect = posClipRect.intersect(newPosClip);
- overflowClipRect = overflowClipRect.intersect(newPosClip);
- fixedClipRect = fixedClipRect.intersect(newPosClip);
- }
- }
-}
-
-void RenderLayer::calculateRects(const RenderLayer* rootLayer, const TQRect& paintDirtyRect, TQRect& layerBounds,
- TQRect& backgroundRect, TQRect& foregroundRect)
-{
- TQRect overflowClipRect = paintDirtyRect;
- TQRect posClipRect = paintDirtyRect;
- TQRect fixedClipRect = paintDirtyRect;
- if (parent())
- parent()->calculateClipRects(rootLayer, overflowClipRect, posClipRect, fixedClipRect);
-
- int x = 0;
- int y = 0;
- convertToLayerCoords(rootLayer, x, y);
- layerBounds = TQRect(x,y,width(),height());
-
- backgroundRect = m_object->style()->position() == FIXED ? fixedClipRect :
- (m_object->isPositioned() ? posClipRect : overflowClipRect);
- foregroundRect = backgroundRect;
-
- // Update the clip rects that will be passed to child layers.
- if (m_object->hasOverflowClip() || m_object->hasClip()) {
- // This layer establishes a clip of some kind.
- if (m_object->hasOverflowClip())
- foregroundRect = foregroundRect.intersect(m_object->getOverflowClipRect(x,y));
-
- if (m_object->hasClip()) {
- // Clip applies to *us* as well, so go ahead and update the damageRect.
- TQRect newPosClip = m_object->getClipRect(x,y);
- backgroundRect = backgroundRect.intersect(newPosClip);
- foregroundRect = foregroundRect.intersect(newPosClip);
- }
-
- // If we establish a clip at all, then go ahead and make sure our background
- // rect is intersected with our layer's bounds.
- backgroundRect = backgroundRect.intersect(layerBounds);
- }
-}
-
-bool RenderLayer::intersectsDamageRect(const TQRect& layerBounds, const TQRect& damageRect) const
-{
- return (renderer()->isCanvas() || renderer()->isRoot() || renderer()->isBody() ||
- (renderer()->hasOverhangingFloats() && !renderer()->hasOverflowClip()) ||
- (renderer()->isInline() && !renderer()->isReplaced()) ||
- layerBounds.intersects(damageRect));
-}
-
-bool RenderLayer::containsPoint(int x, int y, const TQRect& damageRect) const
-{
- return (renderer()->isCanvas() || renderer()->isRoot() || renderer()->isBody() ||
- renderer()->hasOverhangingFloats() ||
- (renderer()->isInline() && !renderer()->isReplaced()) ||
- damageRect.contains(x, y));
-}
-
-// 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.
-static RenderObject* hoverAncestor(RenderObject* obj)
-{
- return (!obj->isInline() && obj->continuation()) ? obj->continuation() : obj->parent();
-}
-
-static RenderObject* commonAncestor(RenderObject* obj1, RenderObject* obj2)
-{
- if (!obj1 || !obj2)
- return 0;
-
- for (RenderObject* currObj1 = obj1; currObj1; currObj1 = hoverAncestor(currObj1))
- for (RenderObject* currObj2 = obj2; currObj2; currObj2 = hoverAncestor(currObj2))
- if (currObj1 == currObj2)
- return currObj1;
-
- return 0;
-}
-
-
-void RenderLayer::updateHoverActiveState(RenderObject::NodeInfo& info)
-{
- // We don't update :hover/:active state when the info is marked as readonly.
- if (info.readonly())
- return;
-
- DOM::NodeImpl *e = m_object->element();
- DOM::DocumentImpl *doc = e ? e->getDocument() : 0;
- if (!doc) return;
-
- // Check to see if the hovered node has changed. If not, then we don't need to
- // do anything.
- DOM::NodeImpl* oldHoverNode = doc->hoverNode();
- DOM::NodeImpl* newHoverNode = info.innerNode();
-
- if (oldHoverNode == newHoverNode && (!oldHoverNode || oldHoverNode->active() == info.active()))
- return;
-
- // Update our current hover node.
- doc->setHoverNode(newHoverNode);
- if (info.active())
- doc->setActiveNode(newHoverNode);
- else
- doc->setActiveNode(0);
-
- // We have two different objects. Fetch their renderers.
- RenderObject* oldHoverObj = oldHoverNode ? oldHoverNode->renderer() : 0;
- RenderObject* newHoverObj = newHoverNode ? newHoverNode->renderer() : 0;
-
- // Locate the common ancestor render object for the two renderers.
- RenderObject* ancestor = commonAncestor(oldHoverObj, newHoverObj);
-
- // The old hover path only needs to be cleared up to (and not including) the common ancestor;
- for (RenderObject* curr = oldHoverObj; curr && curr != ancestor; curr = hoverAncestor(curr)) {
- curr->setMouseInside(false);
- if (curr->element()) {
- curr->element()->setActive(false);
- curr->element()->setHovered(false);
- }
- }
-
- // Now set the hover state for our new object up to the root.
- for (RenderObject* curr = newHoverObj; curr; curr = hoverAncestor(curr)) {
- curr->setMouseInside(true);
- if (curr->element()) {
- curr->element()->setActive(info.active());
- curr->element()->setHovered(true);
- }
- }
-}
-
-// Sort the buffer from lowest z-index to highest. The common scenario will have
-// most z-indices equal, so we optimize for that case (i.e., the list will be mostly
-// sorted already).
-static void sortByZOrder(TQPtrVector<RenderLayer>* buffer,
- TQPtrVector<RenderLayer>* mergeBuffer,
- uint start, uint end)
-{
- if (start >= end)
- return; // Sanity check.
-
- if (end - start <= 6) {
- // Apply a bubble sort for smaller lists.
- for (uint i = end-1; i > start; i--) {
- bool sorted = true;
- for (uint j = start; j < i; j++) {
- RenderLayer* elt = buffer->at(j);
- RenderLayer* elt2 = buffer->at(j+1);
- if (elt->zIndex() > elt2->zIndex()) {
- sorted = false;
- buffer->insert(j, elt2);
- buffer->insert(j+1, elt);
- }
- }
- if (sorted)
- return;
- }
- }
- else {
- // Peform a merge sort for larger lists.
- uint mid = (start+end)/2;
- sortByZOrder(buffer, mergeBuffer, start, mid);
- sortByZOrder(buffer, mergeBuffer, mid, end);
-
- RenderLayer* elt = buffer->at(mid-1);
- RenderLayer* elt2 = buffer->at(mid);
-
- // Handle the fast common case (of equal z-indices). The list may already
- // be completely sorted.
- if (elt->zIndex() <= elt2->zIndex())
- return;
-
- // We have to merge sort. Ensure our merge buffer is big enough to hold
- // all the items.
- mergeBuffer->resize(end - start);
- uint i1 = start;
- uint i2 = mid;
-
- elt = buffer->at(i1);
- elt2 = buffer->at(i2);
-
- while (i1 < mid || i2 < end) {
- if (i1 < mid && (i2 == end || elt->zIndex() <= elt2->zIndex())) {
- mergeBuffer->insert(mergeBuffer->count(), elt);
- i1++;
- if (i1 < mid)
- elt = buffer->at(i1);
- }
- else {
- mergeBuffer->insert(mergeBuffer->count(), elt2);
- i2++;
- if (i2 < end)
- elt2 = buffer->at(i2);
- }
- }
-
- for (uint i = start; i < end; i++)
- buffer->insert(i, mergeBuffer->at(i-start));
-
- mergeBuffer->clear();
- }
-}
-
-void RenderLayer::dirtyZOrderLists()
-{
- if (m_posZOrderList)
- m_posZOrderList->clear();
- if (m_negZOrderList)
- m_negZOrderList->clear();
- m_zOrderListsDirty = true;
-}
-
-void RenderLayer::dirtyOverflowList()
-{
- if (m_overflowList)
- m_overflowList->clear();
- m_overflowListDirty = true;
-}
-
-void RenderLayer::updateZOrderLists()
-{
- if (!isStackingContext() || !m_zOrderListsDirty)
- return;
-
- for (RenderLayer* child = firstChild(); child; child = child->nextSibling())
- child->collectLayers(m_posZOrderList, m_negZOrderList);
-
- // Sort the two lists.
- if (m_posZOrderList) {
- TQPtrVector<RenderLayer> mergeBuffer;
- sortByZOrder(m_posZOrderList, &mergeBuffer, 0, m_posZOrderList->count());
- }
- if (m_negZOrderList) {
- TQPtrVector<RenderLayer> mergeBuffer;
- sortByZOrder(m_negZOrderList, &mergeBuffer, 0, m_negZOrderList->count());
- }
-
- m_zOrderListsDirty = false;
-}
-
-void RenderLayer::updateOverflowList()
-{
- if (!m_overflowListDirty)
- return;
-
- for (RenderLayer* child = firstChild(); child; child = child->nextSibling()) {
- if (child->isOverflowOnly()) {
- if (!m_overflowList)
- m_overflowList = new TQValueList<RenderLayer*>;
- m_overflowList->append(child);
- }
- }
-
- m_overflowListDirty = false;
-}
-
-void RenderLayer::collectLayers(TQPtrVector<RenderLayer>*& posBuffer, TQPtrVector<RenderLayer>*& negBuffer)
-{
- // FIXME: A child render object or layer could override visibility. Don't remove this
- // optimization though until RenderObject's nodeAtPoint is patched to understand what to do
- // when visibility is overridden by a child.
- if (renderer()->style()->visibility() != VISIBLE)
- return;
-
- // Overflow layers are just painted by their enclosing layers, so they don't get put in zorder lists.
- if (!isOverflowOnly()) {
-
- // Determine which buffer the child should be in.
- TQPtrVector<RenderLayer>*& buffer = (zIndex() >= 0) ? posBuffer : negBuffer;
-
- // Create the buffer if it doesn't exist yet.
- if (!buffer)
- buffer = new TQPtrVector<RenderLayer>();
-
- // Resize by a power of 2 when our buffer fills up.
- if (buffer->count() == buffer->size())
- buffer->resize(2*(buffer->size()+1));
-
- // Append ourselves at the end of the appropriate buffer.
- buffer->insert(buffer->count(), this);
- }
-
- // Recur into our children to collect more layers, but only if we don't establish
- // a stacking context.
- if (!isStackingContext()) {
- for (RenderLayer* child = firstChild(); child; child = child->nextSibling())
- child->collectLayers(posBuffer, negBuffer);
- }
-}
-
-#ifdef ENABLE_DUMP
-#ifndef KDE_USE_FINAL
-static TQTextStream &operator<<(TQTextStream &ts, const TQRect &r)
-{
- return ts << "at (" << r.x() << "," << r.y() << ") size " << r.width() << "x" << r.height();
-}
-#endif
-
-static void write(TQTextStream &ts, RenderObject& o, const TQString& indent )
-{
- o.dump(ts, indent);
-
- for (RenderObject *child = o.firstChild(); child; child = child->nextSibling()) {
- if (child->layer()) continue;
- write( ts, *child, indent + " " );
- }
-}
-
-static void write(TQTextStream &ts, const RenderLayer &l,
- const TQRect& layerBounds, const TQRect& backgroundClipRect, const TQRect& clipRect,
- int layerType = 0, const TQString& indent = TQString::null)
-
-{
- ts << indent << "layer";
-
- ts << " at (" << l.xPos() << "," << l.yPos() << ") size " << l.width() << "x" << l.height();
-
- if (layerBounds != layerBounds.intersect(backgroundClipRect)) {
- ts << " backgroundClip " << backgroundClipRect;
- }
- if (layerBounds != layerBounds.intersect(clipRect)) {
- ts << " clip " << clipRect;
- }
-
- if (layerType == -1)
- ts << " layerType: background only";
- else if (layerType == 1)
- ts << " layerType: foreground only";
-
- ts << "\n";
-
- if (layerType != -1)
- write( ts, *l.renderer(), indent + " " );
-
- ts << "\n";
-}
-
-static void writeLayers(TQTextStream &ts, const RenderLayer* rootLayer, RenderLayer* l,
- const TQRect& paintDirtyRect, const TQString& indent)
-{
- // Calculate the clip rects we should use.
- TQRect layerBounds, damageRect, clipRectToApply;
- l->calculateRects(rootLayer, paintDirtyRect, layerBounds, damageRect, clipRectToApply);
-
- // Ensure our lists are up-to-date.
- l->updateZOrderLists();
- l->updateOverflowList();
-
- bool shouldPaint = l->intersectsDamageRect(layerBounds, damageRect);
- TQPtrVector<RenderLayer>* negList = l->negZOrderList();
- TQValueList<RenderLayer*>* ovfList = l->overflowList();
- if (shouldPaint && negList && negList->count() > 0)
- write(ts, *l, layerBounds, damageRect, clipRectToApply, -1, indent);
-
- if (negList) {
- for (unsigned i = 0; i != negList->count(); ++i)
- writeLayers(ts, rootLayer, negList->at(i), paintDirtyRect, indent );
- }
-
- if (shouldPaint)
- write(ts, *l, layerBounds, damageRect, clipRectToApply, negList && negList->count() > 0, indent);
-
- if (ovfList) {
- for (TQValueList<RenderLayer*>::iterator it = ovfList->begin(); it != ovfList->end(); ++it)
- writeLayers(ts, rootLayer, *it, paintDirtyRect, indent);
- }
-
- TQPtrVector<RenderLayer>* posList = l->posZOrderList();
- if (posList) {
- for (unsigned i = 0; i != posList->count(); ++i)
- writeLayers(ts, rootLayer, posList->at(i), paintDirtyRect, indent);
- }
-}
-
-
-void RenderLayer::dump(TQTextStream &ts, const TQString &ind)
-{
- assert( renderer()->isCanvas() );
-
- writeLayers(ts, this, this, TQRect(xPos(), yPos(), width(), height()), ind);
-}
-
-
-#endif
-
-bool RenderLayer::shouldBeOverflowOnly() const
-{
- return renderer()->style() && renderer()->hasOverflowClip() &&
- !renderer()->isPositioned() && !renderer()->isRelPositioned();
- /* && !isTransparent(); */
-}
-
-void RenderLayer::styleChanged()
-{
- bool isOverflowOnly = shouldBeOverflowOnly();
- if (isOverflowOnly != m_isOverflowOnly) {
- m_isOverflowOnly = isOverflowOnly;
- RenderLayer* p = parent();
- RenderLayer* sc = stackingContext();
- if (p)
- p->dirtyOverflowList();
- if (sc)
- sc->dirtyZOrderLists();
- }
-
- if (m_object->hasOverflowClip() &&
- m_object->style()->overflowX() == OMARQUEE && m_object->style()->marqueeBehavior() != MNONE) {
- if (!m_marquee)
- m_marquee = new Marquee(this);
- m_marquee->updateMarqueeStyle();
- }
- else if (m_marquee) {
- delete m_marquee;
- m_marquee = 0;
- }
-}
-
-void RenderLayer::suspendMarquees()
-{
- if (m_marquee)
- m_marquee->suspend();
-
- for (RenderLayer* curr = firstChild(); curr; curr = curr->nextSibling())
- curr->suspendMarquees();
-}
-
-// --------------------------------------------------------------------------
-// Marquee implementation
-
-Marquee::Marquee(RenderLayer* l)
-:m_layer(l), m_currentLoop(0), m_totalLoops(0), m_timerId(0), m_start(0), m_end(0), m_speed(0), m_unfurlPos(0), m_reset(false),
- m_suspended(false), m_stopped(false), m_whiteSpace(NORMAL), m_direction(MAUTO)
-{
-}
-
-int Marquee::marqueeSpeed() const
-{
- int result = m_layer->renderer()->style()->marqueeSpeed();
- DOM::NodeImpl* elt = m_layer->renderer()->element();
- if (elt && elt->id() == ID_MARQUEE) {
- HTMLMarqueeElementImpl* marqueeElt = static_cast<HTMLMarqueeElementImpl*>(elt);
- result = kMax(result, marqueeElt->minimumDelay());
- }
- return result;
-}
-
-EMarqueeDirection Marquee::direction() const
-{
- // FIXME: Support the CSS3 "auto" value for determining the direction of the marquee.
- // For now just map MAUTO to MBACKWARD
- EMarqueeDirection result = m_layer->renderer()->style()->marqueeDirection();
- EDirection dir = m_layer->renderer()->style()->direction();
- if (result == MAUTO)
- result = MBACKWARD;
- if (result == MFORWARD)
- result = (dir == LTR) ? MRIGHT : MLEFT;
- if (result == MBACKWARD)
- result = (dir == LTR) ? MLEFT : MRIGHT;
-
- // Now we have the real direction. Next we check to see if the increment is negative.
- // If so, then we reverse the direction.
- Length increment = m_layer->renderer()->style()->marqueeIncrement();
- if (increment.value() < 0)
- result = static_cast<EMarqueeDirection>(-result);
-
- return result;
-}
-
-bool Marquee::isHorizontal() const
-{
- return direction() == MLEFT || direction() == MRIGHT;
-}
-
-bool Marquee::isUnfurlMarquee() const
-{
- EMarqueeBehavior behavior = m_layer->renderer()->style()->marqueeBehavior();
- return (behavior == MUNFURL);
-}
-
-int Marquee::computePosition(EMarqueeDirection dir, bool stopAtContentEdge)
-{
- RenderObject* o = m_layer->renderer();
- RenderStyle* s = o->style();
- if (isHorizontal()) {
- bool ltr = s->direction() == LTR;
- int clientWidth = o->clientWidth();
- int contentWidth = ltr ? o->rightmostPosition(true, false) : o->leftmostPosition(true, false);
- if (ltr)
- contentWidth += (o->paddingRight() - o->borderLeft());
- else {
- contentWidth = o->width() - contentWidth;
- contentWidth += (o->paddingLeft() - o->borderRight());
- }
- if (dir == MRIGHT) {
- if (stopAtContentEdge)
- return kMax(0, ltr ? (contentWidth - clientWidth) : (clientWidth - contentWidth));
- else
- return ltr ? contentWidth : clientWidth;
- }
- else {
- if (stopAtContentEdge)
- return kMin(0, ltr ? (contentWidth - clientWidth) : (clientWidth - contentWidth));
- else
- return ltr ? -clientWidth : -contentWidth;
- }
- }
- else {
- int contentHeight = m_layer->renderer()->lowestPosition(true, false) -
- m_layer->renderer()->borderTop() + m_layer->renderer()->paddingBottom();
- int clientHeight = m_layer->renderer()->clientHeight();
- if (dir == MUP) {
- if (stopAtContentEdge)
- return kMin(contentHeight - clientHeight, 0);
- else
- return -clientHeight;
- }
- else {
- if (stopAtContentEdge)
- return kMax(contentHeight - clientHeight, 0);
- else
- return contentHeight;
- }
- }
-}
-
-void Marquee::start()
-{
- if (m_timerId || m_layer->renderer()->style()->marqueeIncrement().value() == 0)
- return;
-
- if (!m_suspended && !m_stopped) {
- if (isUnfurlMarquee()) {
- bool forward = direction() == MDOWN || direction() == MRIGHT;
- bool isReversed = (forward && m_currentLoop % 2) || (!forward && !(m_currentLoop % 2));
- m_unfurlPos = isReversed ? m_end : m_start;
- m_layer->renderer()->setChildNeedsLayout(true);
- }
- else {
- if (isHorizontal())
- m_layer->scrollToOffset(m_start, 0, false, false);
- else
- m_layer->scrollToOffset(0, m_start, false, false);
- }
- }
- else
- m_suspended = false;
-
- m_stopped = false;
- m_timerId = startTimer(speed());
-}
-
-void Marquee::suspend()
-{
- if (m_timerId) {
- killTimer(m_timerId);
- m_timerId = 0;
- }
-
- m_suspended = true;
-}
-
-void Marquee::stop()
-{
- if (m_timerId) {
- killTimer(m_timerId);
- m_timerId = 0;
- }
-
- m_stopped = true;
-}
-
-void Marquee::updateMarqueePosition()
-{
- bool activate = (m_totalLoops <= 0 || m_currentLoop < m_totalLoops);
- if (activate) {
- if (isUnfurlMarquee()) {
- if (m_unfurlPos < m_start) {
- m_unfurlPos = m_start;
- m_layer->renderer()->setChildNeedsLayout(true);
- }
- else if (m_unfurlPos > m_end) {
- m_unfurlPos = m_end;
- m_layer->renderer()->setChildNeedsLayout(true);
- }
- }
- else {
- EMarqueeBehavior behavior = m_layer->renderer()->style()->marqueeBehavior();
- m_start = computePosition(direction(), behavior == MALTERNATE);
- m_end = computePosition(reverseDirection(), behavior == MALTERNATE || behavior == MSLIDE);
- }
- if (!m_stopped) start();
- }
-}
-
-void Marquee::updateMarqueeStyle()
-{
- RenderStyle* s = m_layer->renderer()->style();
-
- if (m_direction != s->marqueeDirection() || (m_totalLoops != s->marqueeLoopCount() && m_currentLoop >= m_totalLoops))
- m_currentLoop = 0; // When direction changes or our loopCount is a smaller number than our current loop, reset our loop.
-
- m_totalLoops = s->marqueeLoopCount();
- m_direction = s->marqueeDirection();
- m_whiteSpace = s->whiteSpace();
-
- if (m_layer->renderer()->isHTMLMarquee()) {
- // Hack for WinIE. In WinIE, a value of 0 or lower for the loop count for SLIDE means to only do
- // one loop.
- if (m_totalLoops <= 0 && (s->marqueeBehavior() == MSLIDE || s->marqueeBehavior() == MUNFURL))
- m_totalLoops = 1;
-
- // Hack alert: Set the white-space value to nowrap for horizontal marquees with inline children, thus ensuring
- // all the text ends up on one line by default. Limit this hack to the <marquee> element to emulate
- // WinIE's behavior. Someone using CSS3 can use white-space: nowrap on their own to get this effect.
- // Second hack alert: Set the text-align back to auto. WinIE completely ignores text-align on the
- // marquee element.
- // FIXME: Bring these up with the CSS WG.
- if (isHorizontal() && m_layer->renderer()->childrenInline()) {
- s->setWhiteSpace(NOWRAP);
- s->setTextAlign(TAAUTO);
- }
- }
-
- if (speed() != marqueeSpeed()) {
- m_speed = marqueeSpeed();
- if (m_timerId) {
- killTimer(m_timerId);
- m_timerId = startTimer(speed());
- }
- }
-
- // Check the loop count to see if we should now stop.
- bool activate = (m_totalLoops <= 0 || m_currentLoop < m_totalLoops);
- if (activate && !m_timerId)
- m_layer->renderer()->setNeedsLayout(true);
- else if (!activate && m_timerId) {
- // Destroy the timer.
- killTimer(m_timerId);
- m_timerId = 0;
- }
-}
-
-void Marquee::timerEvent(TQTimerEvent* /*evt*/)
-{
- if (m_layer->renderer()->needsLayout())
- return;
-
- if (m_reset) {
- m_reset = false;
- if (isHorizontal())
- m_layer->scrollToXOffset(m_start);
- else
- m_layer->scrollToYOffset(m_start);
- return;
- }
-
- RenderStyle* s = m_layer->renderer()->style();
-
- int endPoint = m_end;
- int range = m_end - m_start;
- int newPos;
- if (range == 0)
- newPos = m_end;
- else {
- bool addIncrement = direction() == MUP || direction() == MLEFT;
- bool isReversed = s->marqueeBehavior() == MALTERNATE && m_currentLoop % 2;
- if (isUnfurlMarquee()) {
- isReversed = (!addIncrement && m_currentLoop % 2) || (addIncrement && !(m_currentLoop % 2));
- addIncrement = !isReversed;
- }
- if (isReversed) {
- // We're going in the reverse direction.
- endPoint = m_start;
- range = -range;
- if (!isUnfurlMarquee())
- addIncrement = !addIncrement;
- }
- bool positive = range > 0;
- int clientSize = isUnfurlMarquee() ? abs(range) :
- (isHorizontal() ? m_layer->renderer()->clientWidth() : m_layer->renderer()->clientHeight());
- int increment = kMax(1, abs(m_layer->renderer()->style()->marqueeIncrement().width(clientSize)));
- int currentPos = isUnfurlMarquee() ? m_unfurlPos :
- (isHorizontal() ? m_layer->scrollXOffset() : m_layer->scrollYOffset());
- newPos = currentPos + (addIncrement ? increment : -increment);
- if (positive)
- newPos = kMin(newPos, endPoint);
- else
- newPos = kMax(newPos, endPoint);
- }
-
- if (newPos == endPoint) {
- m_currentLoop++;
- if (m_totalLoops > 0 && m_currentLoop >= m_totalLoops) {
- killTimer(m_timerId);
- m_timerId = 0;
- }
- else if (s->marqueeBehavior() != MALTERNATE && s->marqueeBehavior() != MUNFURL)
- m_reset = true;
- }
-
- if (isUnfurlMarquee()) {
- m_unfurlPos = newPos;
- m_layer->renderer()->setChildNeedsLayout(true);
- }
- else {
- if (isHorizontal())
- m_layer->scrollToXOffset(newPos);
- else
- m_layer->scrollToYOffset(newPos);
- }
-}
-
-#include "render_layer.moc"