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Diffstat (limited to 'khtml/rendering/render_layer.cpp')
| -rw-r--r-- | khtml/rendering/render_layer.cpp | 1830 |
1 files changed, 0 insertions, 1830 deletions
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 <germain@ebooksfrance.org> - * (C) 2006 Allan Sandfeld Jense <kde@carewolf.com> - * - * Portions are Copyright (C) 1998 Netscape Communications Corporation. - * - * Other contributors: - * Robert O'Callahan <roc+@cs.cmu.edu> - * David Baron <dbaron@fas.harvard.edu> - * Christian Biesinger <cbiesinger@web.de> - * Randall Jesup <rjesup@wgate.com> - * Roland Mainz <roland.mainz@informatik.med.uni-giessen.de> - * Josh Soref <timeless@mac.com> - * Boris Zbarsky <bzbarsky@mit.edu> - * - * 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" |