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1831 lines
60 KiB
1831 lines
60 KiB
/*
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* Copyright (C) 2003 Apple Computer, Inc.
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* (C) 2006 Germain Garand <germain@ebooksfrance.org>
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* (C) 2006 Allan Sandfeld Jense <kde@carewolf.com>
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*
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* Portions are Copyright (C) 1998 Netscape Communications Corporation.
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*
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* Other contributors:
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* Robert O'Callahan <roc+@cs.cmu.edu>
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* David Baron <dbaron@fas.harvard.edu>
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* Christian Biesinger <cbiesinger@web.de>
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* Randall Jesup <rjesup@wgate.com>
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* Roland Mainz <roland.mainz@informatik.med.uni-giessen.de>
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* Josh Soref <timeless@mac.com>
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* Boris Zbarsky <bzbarsky@mit.edu>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*
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* Alternatively, the contents of this file may be used under the terms
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* of either the Mozilla Public License Version 1.1, found at
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* http://www.mozilla.org/MPL/ (the "MPL") or the GNU General Public
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* License Version 2.0, found at http://www.fsf.org/copyleft/gpl.html
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* (the "GPL"), in which case the provisions of the MPL or the GPL are
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* applicable instead of those above. If you wish to allow use of your
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* version of this file only under the terms of one of those two
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* licenses (the MPL or the GPL) and not to allow others to use your
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* version of this file under the LGPL, indicate your decision by
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* deletingthe provisions above and replace them with the notice and
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* other provisions required by the MPL or the GPL, as the case may be.
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* If you do not delete the provisions above, a recipient may use your
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* version of this file under any of the LGPL, the MPL or the GPL.
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*/
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//#define BOX_DEBUG
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#include "render_layer.h"
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#include <kdebug.h>
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#include <assert.h>
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#include "khtmlview.h"
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#include "render_canvas.h"
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#include "render_arena.h"
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#include "render_replaced.h"
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#include "xml/dom_docimpl.h"
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#include "xml/dom2_eventsimpl.h"
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#include "misc/htmltags.h"
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#include "html/html_blockimpl.h"
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#include "xml/dom_restyler.h"
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#include <tqscrollbar.h>
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#include <tqptrvector.h>
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#include <tqstyle.h>
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using namespace DOM;
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using namespace khtml;
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#ifdef APPLE_CHANGES
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TQScrollBar* RenderLayer::gScrollBar = 0;
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#endif
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#ifndef NDEBUG
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static bool inRenderLayerDetach;
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#endif
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void
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RenderScrollMediator::slotValueChanged()
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{
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m_layer->updateScrollPositionFromScrollbars();
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}
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RenderLayer::RenderLayer(RenderObject* object)
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: m_object( object ),
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m_parent( 0 ),
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m_previous( 0 ),
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m_next( 0 ),
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m_first( 0 ),
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m_last( 0 ),
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m_x( 0 ),
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m_y( 0 ),
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m_scrollX( 0 ),
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m_scrollY( 0 ),
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m_scrollWidth( 0 ),
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m_scrollHeight( 0 ),
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m_hBar( 0 ),
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m_vBar( 0 ),
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m_scrollMediator( 0 ),
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m_posZOrderList( 0 ),
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m_negZOrderList( 0 ),
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m_overflowList(0),
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m_zOrderListsDirty( true ),
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m_overflowListDirty(true),
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m_isOverflowOnly( shouldBeOverflowOnly() ),
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m_markedForRepaint( false ),
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m_hasOverlaidWidgets( false ),
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m_marquee( 0 )
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{
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}
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RenderLayer::~RenderLayer()
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{
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// Child layers will be deleted by their corresponding render objects, so
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// our destructor doesn't have to do anything.
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delete m_hBar;
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delete m_vBar;
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delete m_scrollMediator;
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delete m_posZOrderList;
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delete m_negZOrderList;
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delete m_overflowList;
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delete m_marquee;
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}
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void RenderLayer::updateLayerPosition()
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{
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// The canvas is sized to the docWidth/Height over in RenderCanvas::layout, so we
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// don't need to ever update our layer position here.
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if (renderer()->isCanvas())
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return;
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int x = m_object->xPos();
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int y = m_object->yPos() - m_object->borderTopExtra();
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if (!m_object->isPositioned()) {
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// We must adjust our position by walking up the render tree looking for the
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// nearest enclosing object with a layer.
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RenderObject* curr = m_object->parent();
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while (curr && !curr->layer()) {
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x += curr->xPos();
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y += curr->yPos();
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curr = curr->parent();
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}
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if (curr)
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y += curr->borderTopExtra();
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}
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if (m_object->isRelPositioned())
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static_cast<RenderBox*>(m_object)->relativePositionOffset(x, y);
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// Subtract our parent's scroll offset.
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if (m_object->isPositioned() && enclosingPositionedAncestor()) {
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RenderLayer* positionedParent = enclosingPositionedAncestor();
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// For positioned layers, we subtract out the enclosing positioned layer's scroll offset.
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positionedParent->subtractScrollOffset(x, y);
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positionedParent->checkInlineRelOffset(m_object, x, y);
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}
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else if (parent())
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parent()->subtractScrollOffset(x, y);
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setPos(x,y);
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}
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TQRegion RenderLayer::paintedRegion(RenderLayer* rootLayer)
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{
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updateZOrderLists();
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TQRegion r;
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if (m_negZOrderList) {
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uint count = m_negZOrderList->count();
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for (uint i = 0; i < count; i++) {
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RenderLayer* child = m_negZOrderList->tqat(i);
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r += child->paintedRegion(rootLayer);
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}
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}
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const RenderStyle *s= renderer()->style();
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if (s->visibility() == VISIBLE) {
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int x = 0; int y = 0;
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convertToLayerCoords(rootLayer,x,y);
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TQRect cr(x,y,width(),height());
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if ( s->backgroundImage() || s->backgroundColor().isValid() || s->hasBorder() ||
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renderer()->scrollsOverflow() || renderer()->isReplaced() ) {
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r += cr;
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} else {
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r += renderer()->visibleFlowRegion(x, y);
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}
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}
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if (m_posZOrderList) {
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uint count = m_posZOrderList->count();
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for (uint i = 0; i < count; i++) {
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RenderLayer* child = m_posZOrderList->tqat(i);
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r += child->paintedRegion(rootLayer);
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}
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}
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return r;
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}
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void RenderLayer::tqrepaint( Priority p, bool markForRepaint )
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{
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if (markForRepaint && m_markedForRepaint)
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return;
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for (RenderLayer* child = firstChild(); child; child = child->nextSibling())
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child->tqrepaint( p, markForRepaint );
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TQRect layerBounds, damageRect, fgrect;
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calculateRects(renderer()->canvas()->layer(), renderer()->viewRect(), layerBounds, damageRect, fgrect);
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m_visibleRect = damageRect.intersect( layerBounds );
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if (m_visibleRect.isValid())
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renderer()->canvas()->repaintViewRectangle( m_visibleRect.x(), m_visibleRect.y(), m_visibleRect.width(), m_visibleRect.height(), (p > NormalPriority) );
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if (markForRepaint)
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m_markedForRepaint = true;
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}
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void RenderLayer::updateLayerPositions(RenderLayer* rootLayer, bool doFullRepaint, bool checkForRepaint)
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{
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if (doFullRepaint) {
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m_object->tqrepaint();
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checkForRepaint = doFullRepaint = false;
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}
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updateLayerPosition(); // For relpositioned layers or non-positioned layers,
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// we need to keep in sync, since we may have shifted relative
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// to our parent layer.
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if (m_hBar || m_vBar) {
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// Need to position the scrollbars.
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int x = 0;
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int y = 0;
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convertToLayerCoords(rootLayer, x, y);
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TQRect layerBounds = TQRect(x,y,width(),height());
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positionScrollbars(layerBounds);
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}
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#ifdef APPLE_CHANGES
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// FIXME: Child object could override visibility.
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if (checkForRepaint && (m_object->style()->visibility() == VISIBLE))
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m_object->repaintAfterLayoutIfNeeded(m_repaintRect, m_fullRepaintRect);
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#else
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if (checkForRepaint && m_markedForRepaint) {
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TQRect layerBounds, damageRect, fgrect;
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calculateRects(rootLayer, renderer()->viewRect(), layerBounds, damageRect, fgrect);
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TQRect vr = damageRect.intersect( layerBounds );
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if (vr != m_visibleRect && vr.isValid()) {
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renderer()->canvas()->repaintViewRectangle( vr.x(), vr.y(), vr.width(), vr.height() );
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m_visibleRect = vr;
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}
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}
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m_markedForRepaint = false;
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#endif
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for (RenderLayer* child = firstChild(); child; child = child->nextSibling())
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child->updateLayerPositions(rootLayer, doFullRepaint, checkForRepaint);
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// With all our children positioned, now update our marquee if we need to.
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if (m_marquee)
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m_marquee->updateMarqueePosition();
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}
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void RenderLayer::updateWidgetMasks(RenderLayer* rootLayer)
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{
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if (hasOverlaidWidgets() && !renderer()->canvas()->pagedMode()) {
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updateZOrderLists();
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uint count = m_posZOrderList ? m_posZOrderList->count() : 0;
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bool needUpdate = (count || !m_region.isNull());
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if (count) {
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TQScrollView* sv = m_object->document()->view();
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m_region = TQRect(0,0,sv->contentsWidth(),sv->contentsHeight());
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for (uint i = 0; i < count; i++) {
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RenderLayer* child = m_posZOrderList->tqat(i);
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if (child->zIndex() == 0 && child->renderer()->style()->position() == STATIC)
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continue; // we don't know the widget's exact stacking position within flow
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m_region -= child->paintedRegion(rootLayer);
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}
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} else {
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m_region = TQRegion();
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}
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if (needUpdate)
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renderer()->updateWidgetMasks();
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}
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for (RenderLayer* child = firstChild(); child; child = child->nextSibling())
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child->updateWidgetMasks(rootLayer);
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}
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short RenderLayer::width() const
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{
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int w = m_object->width();
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if (!m_object->hasOverflowClip())
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w = kMax(m_object->overflowWidth(), w);
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return w;
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}
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int RenderLayer::height() const
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{
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int h = m_object->height() + m_object->borderTopExtra() + m_object->borderBottomExtra();
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if (!m_object->hasOverflowClip())
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h = kMax(m_object->overflowHeight(), h);
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return h;
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}
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RenderLayer *RenderLayer::stackingContext() const
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{
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RenderLayer* curr = parent();
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for ( ; curr && !curr->m_object->isCanvas() &&
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curr->m_object->style()->hasAutoZIndex();
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curr = curr->parent());
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return curr;
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}
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RenderLayer* RenderLayer::enclosingPositionedAncestor() const
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{
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RenderLayer* curr = parent();
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for ( ; curr && !curr->m_object->isCanvas() &&
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!curr->m_object->isPositioned() && !curr->m_object->isRelPositioned();
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curr = curr->parent());
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return curr;
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}
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#ifdef APPLE_CHANGES
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bool RenderLayer::isTransparent()
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{
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return m_object->style()->opacity() < 1.0f;
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}
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RenderLayer* RenderLayer::transparentAncestor()
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{
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RenderLayer* curr = parent();
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for ( ; curr && curr->m_object->style()->opacity() == 1.0f; curr = curr->parent());
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return curr;
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}
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#endif
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void* RenderLayer::operator new(size_t sz, RenderArena* renderArena) throw()
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{
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return renderArena->allocate(sz);
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}
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void RenderLayer::operator delete(void* ptr, size_t sz)
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{
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assert(inRenderLayerDetach);
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// Stash size where detach can find it.
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*(size_t *)ptr = sz;
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}
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void RenderLayer::detach(RenderArena* renderArena)
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{
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#ifndef NDEBUG
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inRenderLayerDetach = true;
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#endif
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delete this;
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#ifndef NDEBUG
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inRenderLayerDetach = false;
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#endif
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// Recover the size left there for us by operator delete and free the memory.
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renderArena->free(*(size_t *)this, this);
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}
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void RenderLayer::addChild(RenderLayer *child, RenderLayer* beforeChild)
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{
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RenderLayer* prevSibling = beforeChild ? beforeChild->previousSibling() : lastChild();
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if (prevSibling) {
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child->setPreviousSibling(prevSibling);
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prevSibling->setNextSibling(child);
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}
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else
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setFirstChild(child);
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if (beforeChild) {
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beforeChild->setPreviousSibling(child);
|
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child->setNextSibling(beforeChild);
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}
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else
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setLastChild(child);
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child->setParent(this);
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if (child->isOverflowOnly())
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dirtyOverflowList();
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else {
|
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// Dirty the z-order list in which we are contained. The stackingContext() can be null in the
|
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// case where we're building up generated content layers. This is ok, since the lists will start
|
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// off dirty in that case anyway.
|
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RenderLayer* stackingContext = child->stackingContext();
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if (stackingContext)
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stackingContext->dirtyZOrderLists();
|
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}
|
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}
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RenderLayer* RenderLayer::removeChild(RenderLayer* oldChild)
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{
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// remove the child
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if (oldChild->previousSibling())
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oldChild->previousSibling()->setNextSibling(oldChild->nextSibling());
|
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if (oldChild->nextSibling())
|
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oldChild->nextSibling()->setPreviousSibling(oldChild->previousSibling());
|
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if (m_first == oldChild)
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m_first = oldChild->nextSibling();
|
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if (m_last == oldChild)
|
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m_last = oldChild->previousSibling();
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|
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if (oldChild->isOverflowOnly())
|
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dirtyOverflowList();
|
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else {
|
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// 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();
|
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if (stackingContext)
|
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stackingContext->dirtyZOrderLists();
|
|
}
|
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|
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oldChild->setPreviousSibling(0);
|
|
oldChild->setNextSibling(0);
|
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oldChild->setParent(0);
|
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|
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return oldChild;
|
|
}
|
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|
|
void RenderLayer::removeOnlyThisLayer()
|
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{
|
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if (!m_parent)
|
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return;
|
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|
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// 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);
|
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current = next;
|
|
}
|
|
|
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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,
|
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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 tqrepaint)
|
|
{
|
|
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 tqrepaint of our object.
|
|
if (tqrepaint)
|
|
m_object->tqrepaint(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->tqstyle().tqpixelMetric(TQStyle::PM_ScrollBarExtent);
|
|
#endif
|
|
|
|
}
|
|
|
|
int RenderLayer::horizontalScrollbarHeight()
|
|
{
|
|
if (!m_hBar)
|
|
return 0;
|
|
|
|
#ifdef APPLE_CHANGES
|
|
return m_hBar->height();
|
|
#else
|
|
return m_hBar->tqstyle().tqpixelMetric(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->tqstyle().tqpixelMetric(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->tqat(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->tqat(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->tqat(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->tqat(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->tqat(j);
|
|
RenderLayer* elt2 = buffer->tqat(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->tqat(mid-1);
|
|
RenderLayer* elt2 = buffer->tqat(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->tqat(i1);
|
|
elt2 = buffer->tqat(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->tqat(i1);
|
|
}
|
|
else {
|
|
mergeBuffer->insert(mergeBuffer->count(), elt2);
|
|
i2++;
|
|
if (i2 < end)
|
|
elt2 = buffer->tqat(i2);
|
|
}
|
|
}
|
|
|
|
for (uint i = start; i < end; i++)
|
|
buffer->insert(i, mergeBuffer->tqat(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->tqat(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->tqat(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"
|