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2326 lines
87 KiB
2326 lines
87 KiB
/**
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* This file is part of the DOM implementation for KDE.
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*
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* Copyright (C) 1999-2003 Lars Knoll (knoll@kde.org)
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* (C) 1999 Antti Koivisto (koivisto@kde.org)
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* (C) 2002-2003 Apple Computer, Inc.
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* (C) 2005 Allan Sandfeld Jensen (kde@carewolf.com)
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* (C) 2006 Samuel Weinig (sam.weinig@gmail.com)
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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 Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 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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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public License
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* along with this library; see the file COPYING.LIB. If not, write to
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* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*
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*/
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// -------------------------------------------------------------------------
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//#define DEBUG_LAYOUT
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//#define CLIP_DEBUG
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#include <tqpainter.h>
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#include "misc/loader.h"
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#include "rendering/render_replaced.h"
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#include "rendering/render_canvas.h"
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#include "rendering/render_table.h"
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#include "rendering/render_inline.h"
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#include "rendering/render_block.h"
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#include "rendering/render_line.h"
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#include "rendering/render_layer.h"
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#include "misc/htmlhashes.h"
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#include "xml/dom_nodeimpl.h"
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#include "xml/dom_docimpl.h"
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#include "html/html_elementimpl.h"
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#include <tdehtmlview.h>
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#include <kdebug.h>
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#include <tdeglobal.h>
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#include <assert.h>
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using namespace DOM;
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using namespace tdehtml;
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#define TABLECELLMARGIN -0x4000
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RenderBox::RenderBox(DOM::NodeImpl* node)
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: RenderContainer(node)
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{
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m_minWidth = -1;
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m_maxWidth = -1;
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m_width = m_height = 0;
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m_x = 0;
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m_y = 0;
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m_marginTop = 0;
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m_marginBottom = 0;
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m_marginLeft = 0;
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m_marginRight = 0;
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m_staticX = 0;
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m_staticY = 0;
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m_placeHolderBox = 0;
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m_layer = 0;
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}
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RenderBlock* RenderBox::createAnonymousBlock()
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{
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RenderStyle *newStyle = new RenderStyle();
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newStyle->inheritFrom(style());
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newStyle->setDisplay(BLOCK);
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RenderBlock *newBox = new (renderArena()) RenderBlock(document() /* anonymous*/);
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newBox->setStyle(newStyle);
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return newBox;
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}
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void RenderBox::restructureParentFlow() {
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if (!parent() || parent()->childrenInline() == isInline())
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return;
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// We have gone from not affecting the inline status of the parent flow to suddenly
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// having an impact. See if there is a mismatch between the parent flow's
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// childrenInline() state and our state.
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if (!isInline()) {
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if (parent()->isRenderInline()) {
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// We have to split the parent flow.
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RenderInline* parentInline = static_cast<RenderInline*>(parent());
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RenderBlock* newBox = parentInline->createAnonymousBlock();
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RenderFlow* oldContinuation = parent()->continuation();
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parentInline->setContinuation(newBox);
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RenderObject* beforeChild = nextSibling();
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parent()->removeChildNode(this);
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parentInline->splitFlow(beforeChild, newBox, this, oldContinuation);
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}
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else if (parent()->isRenderBlock())
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static_cast<RenderBlock*>(parent())->makeChildrenNonInline();
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}
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else {
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// An anonymous block must be made to wrap this inline.
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RenderBlock* box = createAnonymousBlock();
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parent()->insertChildNode(box, this);
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box->appendChildNode(parent()->removeChildNode(this));
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}
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}
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static inline bool overflowAppliesTo(RenderObject* o)
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{
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// css 2.1-11.1.1
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// 1) overflow only applies to non-replaced block-level elements, table cells, and inline-block elements
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if (o->isRenderBlock() || o->isTableRow() || o->isTableSection())
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// 2) overflow on root applies to the viewport (cf. TDEHTMLView::layout)
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if (!o->isRoot())
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// 3) overflow on body may apply to the viewport...
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if (!o->isBody()
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// ...but only for HTML documents...
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|| !o->document()->isHTMLDocument()
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// ...and only when the root has a visible overflow
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|| !o->document()->documentElement()->renderer()
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|| !o->document()->documentElement()->renderer()->style()
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|| o->document()->documentElement()->renderer()->style()->hidesOverflow())
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return true;
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return false;
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}
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void RenderBox::setStyle(RenderStyle *_style)
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{
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bool affectsParent = style() && isFloatingOrPositioned() &&
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(!_style->isFloating() && _style->position() != ABSOLUTE && _style->position() != FIXED) &&
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parent() && (parent()->isBlockFlow() || parent()->isInlineFlow());
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RenderContainer::setStyle(_style);
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// The root always paints its background/border.
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if (isRoot())
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setShouldPaintBackgroundOrBorder(true);
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switch(_style->display())
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{
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case INLINE:
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case INLINE_BLOCK:
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case INLINE_TABLE:
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setInline(true);
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break;
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case RUN_IN:
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if (isInline() && parent() && parent()->childrenInline())
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break;
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default:
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setInline(false);
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}
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switch(_style->position())
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{
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case ABSOLUTE:
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case FIXED:
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setPositioned(true);
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break;
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default:
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setPositioned(false);
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if( !isTableCell() && _style->isFloating() )
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setFloating(true);
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if( _style->position() == RELATIVE )
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setRelPositioned(true);
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}
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if (overflowAppliesTo(this) && _style->hidesOverflow())
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setHasOverflowClip();
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if (requiresLayer()) {
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if (!m_layer) {
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m_layer = new (renderArena()) RenderLayer(this);
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m_layer->insertOnlyThisLayer();
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if (parent() && containingBlock())
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m_layer->updateLayerPosition();
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}
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}
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else if (m_layer && !isCanvas()) {
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m_layer->removeOnlyThisLayer();
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m_layer = 0;
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}
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if (m_layer)
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m_layer->styleChanged();
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if (style()->outlineWidth() > 0 && style()->outlineSize() > maximalOutlineSize(PaintActionOutline))
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static_cast<RenderCanvas*>(document()->renderer())->setMaximalOutlineSize(style()->outlineSize());
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if (affectsParent)
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restructureParentFlow();
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}
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RenderBox::~RenderBox()
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{
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//kdDebug( 6040 ) << "Element destructor: this=" << nodeName().string() << endl;
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}
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void RenderBox::detach()
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{
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RenderLayer* layer = m_layer;
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RenderArena* arena = renderArena();
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RenderContainer::detach();
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if (layer)
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layer->detach(arena);
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}
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InlineBox* RenderBox::createInlineBox(bool /*makePlaceHolderBox*/, bool /*isRootLineBox*/)
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{
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if (m_placeHolderBox)
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m_placeHolderBox->detach(renderArena());
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return (m_placeHolderBox = new (renderArena()) InlineBox(this));
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}
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void RenderBox::deleteInlineBoxes(RenderArena* arena)
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{
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if (m_placeHolderBox) {
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m_placeHolderBox->detach( arena ? arena : renderArena() );
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m_placeHolderBox = 0;
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}
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}
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short RenderBox::contentWidth() const
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{
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short w = m_width - style()->borderLeftWidth() - style()->borderRightWidth();
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w -= paddingLeft() + paddingRight();
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if (m_layer && scrollsOverflowY())
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w -= m_layer->verticalScrollbarWidth();
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//kdDebug( 6040 ) << "RenderBox::contentWidth(2) = " << w << endl;
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return w;
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}
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int RenderBox::contentHeight() const
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{
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int h = m_height - style()->borderTopWidth() - style()->borderBottomWidth();
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h -= paddingTop() + paddingBottom();
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if (m_layer && scrollsOverflowX())
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h -= m_layer->horizontalScrollbarHeight();
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return h;
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}
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void RenderBox::setPos( int xPos, int yPos )
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{
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m_x = xPos; m_y = yPos;
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}
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short RenderBox::width() const
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{
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return m_width;
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}
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int RenderBox::height() const
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{
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return m_height;
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}
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void RenderBox::setWidth( int width )
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{
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m_width = width;
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}
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void RenderBox::setHeight( int height )
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{
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m_height = height;
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}
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int RenderBox::calcBoxHeight(int h) const
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{
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if (style()->boxSizing() == CONTENT_BOX)
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h += borderTop() + borderBottom() + paddingTop() + paddingBottom();
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return h;
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}
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int RenderBox::calcBoxWidth(int w) const
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{
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if (style()->boxSizing() == CONTENT_BOX)
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w += borderLeft() + borderRight() + paddingLeft() + paddingRight();
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return w;
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}
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int RenderBox::calcContentHeight(int h) const
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{
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if (style()->boxSizing() == BORDER_BOX)
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h -= borderTop() + borderBottom() + paddingTop() + paddingBottom();
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return kMax(0, h);
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}
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int RenderBox::calcContentWidth(int w) const
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{
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if (style()->boxSizing() == BORDER_BOX)
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w -= borderLeft() + borderRight() + paddingLeft() + paddingRight();
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return kMax(0, w);
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}
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// --------------------- painting stuff -------------------------------
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void RenderBox::paint(PaintInfo& i, int _tx, int _ty)
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{
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_tx += m_x;
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_ty += m_y;
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if (hasOverflowClip() && m_layer)
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m_layer->subtractScrollOffset(_tx, _ty);
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// default implementation. Just pass things through to the children
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for(RenderObject* child = firstChild(); child; child = child->nextSibling())
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child->paint(i, _tx, _ty);
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}
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void RenderBox::paintRootBoxDecorations(PaintInfo& paintInfo, int _tx, int _ty)
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{
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//kdDebug( 6040 ) << renderName() << "::paintRootBoxDecorations()" << _tx << "/" << _ty << endl;
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const BackgroundLayer* bgLayer = style()->backgroundLayers();
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TQColor bgColor = style()->backgroundColor();
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if (document()->isHTMLDocument() && !style()->hasBackground()) {
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// Locate the <body> element using the DOM. This is easier than trying
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// to crawl around a render tree with potential :before/:after content and
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// anonymous blocks created by inline <body> tags etc. We can locate the <body>
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// render object very easily via the DOM.
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HTMLElementImpl* body = document()->body();
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RenderObject* bodyObject = (body && body->id() == ID_BODY) ? body->renderer() : 0;
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if (bodyObject) {
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bgLayer = bodyObject->style()->backgroundLayers();
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bgColor = bodyObject->style()->backgroundColor();
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}
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}
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if( !bgColor.isValid() && canvas()->view())
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bgColor = canvas()->view()->palette().active().color(TQColorGroup::Base);
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int w = width();
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int h = height();
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// kdDebug(0) << "width = " << w <<endl;
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int rw, rh;
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if (canvas()->view()) {
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rw = canvas()->view()->contentsWidth();
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rh = canvas()->view()->contentsHeight();
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} else {
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rw = canvas()->docWidth();
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rh = canvas()->docHeight();
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}
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// kdDebug(0) << "rw = " << rw <<endl;
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int bx = _tx - marginLeft();
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int by = _ty - marginTop();
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int bw = QMAX(w + marginLeft() + marginRight() + borderLeft() + borderRight(), rw);
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int bh = QMAX(h + marginTop() + marginBottom() + borderTop() + borderBottom(), rh);
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// CSS2 14.2:
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// " The background of the box generated by the root element covers the entire canvas."
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// hence, paint the background even in the margin areas (unlike for every other element!)
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// I just love these little inconsistencies .. :-( (Dirk)
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int my = kMax(by, paintInfo.r.y());
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paintBackgrounds(paintInfo.p, bgColor, bgLayer, my, paintInfo.r.height(), bx, by, bw, bh);
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if(style()->hasBorder())
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paintBorder( paintInfo.p, _tx, _ty, w, h, style() );
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}
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void RenderBox::paintBoxDecorations(PaintInfo& paintInfo, int _tx, int _ty)
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{
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//kdDebug( 6040 ) << renderName() << "::paintDecorations()" << endl;
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if(isRoot())
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return paintRootBoxDecorations(paintInfo, _tx, _ty);
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int w = width();
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int h = height() + borderTopExtra() + borderBottomExtra();
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_ty -= borderTopExtra();
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int my = kMax(_ty,paintInfo.r.y());
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int end = kMin( paintInfo.r.y() + paintInfo.r.height(), _ty + h );
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int mh = end - my;
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// The <body> only paints its background if the root element has defined a background
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// independent of the body. Go through the DOM to get to the root element's render object,
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// since the root could be inline and wrapped in an anonymous block.
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if (!isBody() || !document()->isHTMLDocument() || document()->documentElement()->renderer()->style()->hasBackground())
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paintBackgrounds(paintInfo.p, style()->backgroundColor(), style()->backgroundLayers(), my, mh, _tx, _ty, w, h);
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if(style()->hasBorder()) {
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paintBorder(paintInfo.p, _tx, _ty, w, h, style());
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}
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}
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void RenderBox::paintBackgrounds(TQPainter *p, const TQColor& c, const BackgroundLayer* bgLayer, int clipy, int cliph, int _tx, int _ty, int w, int height)
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{
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if (!bgLayer) return;
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paintBackgrounds(p, c, bgLayer->next(), clipy, cliph, _tx, _ty, w, height);
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paintBackground(p, c, bgLayer, clipy, cliph, _tx, _ty, w, height);
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}
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void RenderBox::paintBackground(TQPainter *p, const TQColor& c, const BackgroundLayer* bgLayer, int clipy, int cliph, int _tx, int _ty, int w, int height)
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{
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paintBackgroundExtended(p, c, bgLayer, clipy, cliph, _tx, _ty, w, height,
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borderLeft(), borderRight(), paddingLeft(), paddingRight());
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}
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static void calculateBackgroundSize(const BackgroundLayer* bgLayer, int& scaledWidth, int& scaledHeight)
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{
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CachedImage* bg = bgLayer->backgroundImage();
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if (bgLayer->isBackgroundSizeSet()) {
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Length bgWidth = bgLayer->backgroundSize().width;
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Length bgHeight = bgLayer->backgroundSize().height;
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if (bgWidth.isPercent())
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scaledWidth = scaledWidth * bgWidth.value() / 100;
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else if (bgWidth.isFixed())
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scaledWidth = bgWidth.value();
|
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else if (bgWidth.isVariable()) {
|
|
// If the width is auto and the height is not, we have to use the appropriate
|
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// scale to maintain our aspect ratio.
|
|
if (bgHeight.isPercent()) {
|
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int scaledH = scaledHeight * bgHeight.value() / 100;
|
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scaledWidth = bg->pixmap_size().width() * scaledH / bg->pixmap_size().height();
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} else if (bgHeight.isFixed())
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scaledWidth = bg->pixmap_size().width() * bgHeight.value() / bg->pixmap_size().height();
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}
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if (bgHeight.isPercent())
|
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scaledHeight = scaledHeight * bgHeight.value() / 100;
|
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else if (bgHeight.isFixed())
|
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scaledHeight = bgHeight.value();
|
|
else if (bgHeight.isVariable()) {
|
|
// If the height is auto and the width is not, we have to use the appropriate
|
|
// scale to maintain our aspect ratio.
|
|
if (bgWidth.isPercent())
|
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scaledHeight = bg->pixmap_size().height() * scaledWidth / bg->pixmap_size().width();
|
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else if (bgWidth.isFixed())
|
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scaledHeight = bg->pixmap_size().height() * bgWidth.value() / bg->pixmap_size().width();
|
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else if (bgWidth.isVariable()) {
|
|
// If both width and height are auto, we just want to use the image's
|
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// intrinsic size.
|
|
scaledWidth = bg->pixmap_size().width();
|
|
scaledHeight = bg->pixmap_size().height();
|
|
}
|
|
}
|
|
} else {
|
|
scaledWidth = bg->pixmap_size().width();
|
|
scaledHeight = bg->pixmap_size().height();
|
|
}
|
|
}
|
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void RenderBox::paintBackgroundExtended(TQPainter *p, const TQColor &c, const BackgroundLayer* bgLayer, int clipy, int cliph,
|
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int _tx, int _ty, int w, int h,
|
|
int bleft, int bright, int pleft, int pright)
|
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{
|
|
if ( cliph < 0 )
|
|
return;
|
|
|
|
if (bgLayer->backgroundClip() != BGBORDER) {
|
|
// Clip to the padding or content boxes as necessary.
|
|
bool includePadding = bgLayer->backgroundClip() == BGCONTENT;
|
|
int x = _tx + bleft + (includePadding ? pleft : 0);
|
|
int y = _ty + borderTop() + (includePadding ? paddingTop() : 0);
|
|
int width = w - bleft - bright - (includePadding ? pleft + pright : 0);
|
|
int height = h - borderTop() - borderBottom() - (includePadding ? paddingTop() + paddingBottom() : 0);
|
|
p->save();
|
|
p->setClipRect(TQRect(x, y, width, height), TQPainter::CoordPainter);
|
|
}
|
|
|
|
CachedImage* bg = bgLayer->backgroundImage();
|
|
bool shouldPaintBackgroundImage = bg && bg->pixmap_size() == bg->valid_rect().size() && !bg->isTransparent() && !bg->isErrorImage();
|
|
TQColor bgColor = c;
|
|
|
|
// Paint the color first underneath all images.
|
|
if (!bgLayer->next() && bgColor.isValid() && tqAlpha(bgColor.rgb()) > 0)
|
|
p->fillRect(_tx, clipy, w, cliph, bgColor);
|
|
|
|
// no progressive loading of the background image
|
|
if (shouldPaintBackgroundImage) {
|
|
int sx = 0;
|
|
int sy = 0;
|
|
int cw,ch;
|
|
int cx,cy;
|
|
int scaledImageWidth, scaledImageHeight;
|
|
|
|
// CSS2 chapter 14.2.1
|
|
|
|
if (bgLayer->backgroundAttachment()) {
|
|
//scroll
|
|
int hpab = 0, vpab = 0, left = 0, top = 0; // Init to 0 for background-origin of 'border'
|
|
if (bgLayer->backgroundOrigin() != BGBORDER) {
|
|
hpab += bleft + bright;
|
|
vpab += borderTop() + borderBottom();
|
|
left += bleft;
|
|
top += borderTop();
|
|
if (bgLayer->backgroundOrigin() == BGCONTENT) {
|
|
hpab += pleft + pright;
|
|
vpab += paddingTop() + paddingBottom();
|
|
left += pleft;
|
|
top += paddingTop();
|
|
}
|
|
}
|
|
|
|
int pw = w - hpab;
|
|
int ph = h - vpab;
|
|
scaledImageWidth = pw;
|
|
scaledImageHeight = ph;
|
|
calculateBackgroundSize(bgLayer, scaledImageWidth, scaledImageHeight);
|
|
|
|
EBackgroundRepeat bgr = bgLayer->backgroundRepeat();
|
|
if (bgr == NO_REPEAT || bgr == REPEAT_Y) {
|
|
cw = scaledImageWidth;
|
|
int xPosition = bgLayer->backgroundXPosition().minWidth(pw-scaledImageWidth);
|
|
if ( xPosition >= 0 ) {
|
|
cx = _tx + xPosition;
|
|
cw = kMin(scaledImageWidth, pw - xPosition);
|
|
}
|
|
else {
|
|
cx = _tx;
|
|
if (scaledImageWidth > 0) {
|
|
sx = -xPosition;
|
|
cw = kMin(scaledImageWidth+xPosition, pw);
|
|
}
|
|
}
|
|
cx += left;
|
|
} else {
|
|
// repeat over x
|
|
cw = w;
|
|
cx = _tx;
|
|
if (scaledImageWidth > 0) {
|
|
int xPosition = bgLayer->backgroundXPosition().minWidth(pw-scaledImageWidth);
|
|
sx = scaledImageWidth - (xPosition % scaledImageWidth);
|
|
sx -= left % scaledImageWidth;
|
|
}
|
|
}
|
|
if (bgr == NO_REPEAT || bgr == REPEAT_X) {
|
|
ch = scaledImageHeight;
|
|
int yPosition = bgLayer->backgroundYPosition().minWidth(ph - scaledImageHeight);
|
|
if ( yPosition >= 0 ) {
|
|
cy = _ty + yPosition;
|
|
ch = kMin(ch, ph - yPosition);
|
|
}
|
|
else {
|
|
cy = _ty;
|
|
if (scaledImageHeight > 0) {
|
|
sy = -yPosition;
|
|
ch = kMin(scaledImageHeight+yPosition, ph);
|
|
}
|
|
}
|
|
|
|
cy += top;
|
|
} else {
|
|
// repeat over y
|
|
ch = h;
|
|
cy = _ty;
|
|
if (scaledImageHeight > 0) {
|
|
int yPosition = bgLayer->backgroundYPosition().minWidth(ph - scaledImageHeight);
|
|
sy = scaledImageHeight - (yPosition % scaledImageHeight);
|
|
sy -= top % scaledImageHeight;
|
|
}
|
|
}
|
|
if (layer())
|
|
layer()->scrollOffset(sx, sy);
|
|
}
|
|
else
|
|
{
|
|
//fixed
|
|
TQRect vr = viewRect();
|
|
int pw = vr.width();
|
|
int ph = vr.height();
|
|
scaledImageWidth = pw;
|
|
scaledImageHeight = ph;
|
|
calculateBackgroundSize(bgLayer, scaledImageWidth, scaledImageHeight);
|
|
EBackgroundRepeat bgr = bgLayer->backgroundRepeat();
|
|
|
|
int xPosition = bgLayer->backgroundXPosition().minWidth(pw-scaledImageWidth);
|
|
if (bgr == NO_REPEAT || bgr == REPEAT_Y) {
|
|
cw = kMin(scaledImageWidth, pw - xPosition);
|
|
cx = vr.x() + xPosition;
|
|
} else {
|
|
cw = pw;
|
|
cx = vr.x();
|
|
if (scaledImageWidth > 0)
|
|
sx = scaledImageWidth - xPosition % scaledImageWidth;
|
|
}
|
|
|
|
int yPosition = bgLayer->backgroundYPosition().minWidth(ph-scaledImageHeight);
|
|
if (bgr == NO_REPEAT || bgr == REPEAT_X) {
|
|
ch = kMin(scaledImageHeight, ph - yPosition);
|
|
cy = vr.y() + yPosition;
|
|
} else {
|
|
ch = ph;
|
|
cy = vr.y();
|
|
if (scaledImageHeight > 0)
|
|
sy = scaledImageHeight - yPosition % scaledImageHeight;
|
|
}
|
|
|
|
TQRect fix(cx, cy, cw, ch);
|
|
TQRect ele(_tx, _ty, w, h);
|
|
TQRect b = fix.intersect(ele);
|
|
|
|
//kdDebug() <<" ele is " << ele << " b is " << b << " fix is " << fix << endl;
|
|
sx+=b.x()-cx;
|
|
sy+=b.y()-cy;
|
|
cx=b.x();cy=b.y();cw=b.width();ch=b.height();
|
|
}
|
|
// restrict painting to repaint-clip
|
|
if (cy < clipy) {
|
|
ch -= (clipy - cy);
|
|
sy += (clipy - cy);
|
|
cy = clipy;
|
|
}
|
|
ch = kMin(ch, cliph);
|
|
|
|
// kdDebug() << " clipy, cliph: " << clipy << ", " << cliph << endl;
|
|
// kdDebug() << " drawTiledPixmap(" << cx << ", " << cy << ", " << cw << ", " << ch << ", " << sx << ", " << sy << ")" << endl;
|
|
if (cw>0 && ch>0)
|
|
p->drawTiledPixmap(cx, cy, cw, ch, bg->tiled_pixmap(c, scaledImageWidth, scaledImageHeight), sx, sy);
|
|
|
|
}
|
|
|
|
if (bgLayer->backgroundClip() != BGBORDER)
|
|
p->restore(); // Undo the background clip
|
|
|
|
}
|
|
|
|
void RenderBox::outlineBox(TQPainter *p, int _tx, int _ty, const char *color)
|
|
{
|
|
p->setPen(TQPen(TQColor(color), 1, Qt::DotLine));
|
|
p->setBrush( Qt::NoBrush );
|
|
p->drawRect(_tx, _ty, m_width, m_height);
|
|
}
|
|
|
|
TQRect RenderBox::getOverflowClipRect(int tx, int ty)
|
|
{
|
|
// XXX When overflow-clip (CSS3) is implemented, we'll obtain the property
|
|
// here.
|
|
int bl=borderLeft(),bt=borderTop(),bb=borderBottom(),br=borderRight();
|
|
int clipx = tx+bl;
|
|
int clipy = ty+bt;
|
|
int clipw = m_width-bl-br;
|
|
int cliph = m_height-bt-bb+borderTopExtra()+borderBottomExtra();
|
|
|
|
// Substract out scrollbars if we have them.
|
|
if (m_layer) {
|
|
clipw -= m_layer->verticalScrollbarWidth();
|
|
cliph -= m_layer->horizontalScrollbarHeight();
|
|
}
|
|
|
|
return TQRect(clipx,clipy,clipw,cliph);
|
|
}
|
|
|
|
TQRect RenderBox::getClipRect(int tx, int ty)
|
|
{
|
|
int bl=borderLeft(),bt=borderTop(),bb=borderBottom(),br=borderRight();
|
|
// ### what about paddings?
|
|
int clipw = m_width-bl-br;
|
|
int cliph = m_height-bt-bb;
|
|
|
|
bool rtl = (style()->direction() == RTL);
|
|
|
|
int clipleft = 0;
|
|
int clipright = clipw;
|
|
int cliptop = 0;
|
|
int clipbottom = cliph;
|
|
|
|
if ( style()->hasClip() && style()->position() == ABSOLUTE ) {
|
|
// the only case we use the clip property according to CSS 2.1
|
|
if (!style()->clipLeft().isVariable()) {
|
|
int c = style()->clipLeft().width(clipw);
|
|
if ( rtl )
|
|
clipleft = clipw - c;
|
|
else
|
|
clipleft = c;
|
|
}
|
|
if (!style()->clipRight().isVariable()) {
|
|
int w = style()->clipRight().width(clipw);
|
|
if ( rtl ) {
|
|
clipright = clipw - w;
|
|
} else {
|
|
clipright = w;
|
|
}
|
|
}
|
|
if (!style()->clipTop().isVariable())
|
|
cliptop = style()->clipTop().width(cliph);
|
|
if (!style()->clipBottom().isVariable())
|
|
clipbottom = style()->clipBottom().width(cliph);
|
|
}
|
|
int clipx = tx + clipleft;
|
|
int clipy = ty + cliptop;
|
|
clipw = clipright-clipleft;
|
|
cliph = clipbottom-cliptop;
|
|
|
|
//kdDebug( 6040 ) << "setting clip("<<clipx<<","<<clipy<<","<<clipw<<","<<cliph<<")"<<endl;
|
|
|
|
return TQRect(clipx,clipy,clipw,cliph);
|
|
}
|
|
|
|
void RenderBox::close()
|
|
{
|
|
setNeedsLayoutAndMinMaxRecalc();
|
|
}
|
|
|
|
short RenderBox::containingBlockWidth() const
|
|
{
|
|
if (isCanvas() && canvas()->view())
|
|
{
|
|
if (canvas()->pagedMode())
|
|
return canvas()->width();
|
|
else
|
|
return canvas()->view()->visibleWidth();
|
|
}
|
|
|
|
RenderBlock* cb = containingBlock();
|
|
if (isRenderBlock() && cb->isTable() && static_cast<RenderTable*>(cb)->caption() == this) {
|
|
//captions are not affected by table border or padding
|
|
return cb->width();
|
|
}
|
|
if (usesLineWidth())
|
|
return cb->lineWidth(m_y);
|
|
else
|
|
return cb->contentWidth();
|
|
}
|
|
|
|
bool RenderBox::absolutePosition(int &_xPos, int &_yPos, bool f) const
|
|
{
|
|
if ( style()->position() == FIXED )
|
|
f = true;
|
|
RenderObject *o = container();
|
|
if( o && o->absolutePosition(_xPos, _yPos, f))
|
|
{
|
|
if ( o->layer() ) {
|
|
if (o->hasOverflowClip())
|
|
o->layer()->subtractScrollOffset( _xPos, _yPos );
|
|
if (isPositioned())
|
|
o->layer()->checkInlineRelOffset(this, _xPos, _yPos);
|
|
}
|
|
|
|
if(!isInline() || isReplaced()) {
|
|
_xPos += xPos(),
|
|
_yPos += yPos();
|
|
}
|
|
|
|
if(isRelPositioned())
|
|
relativePositionOffset(_xPos, _yPos);
|
|
return true;
|
|
}
|
|
else
|
|
{
|
|
_xPos = 0;
|
|
_yPos = 0;
|
|
return false;
|
|
}
|
|
}
|
|
|
|
void RenderBox::position(InlineBox* box, int /*from*/, int /*len*/, bool /*reverse*/)
|
|
{
|
|
if (isPositioned()) {
|
|
// Cache the x position only if we were an INLINE type originally.
|
|
bool wasInline = style()->isOriginalDisplayInlineType();
|
|
|
|
if (wasInline && hasStaticX()) {
|
|
// The value is cached in the xPos of the box. We only need this value if
|
|
// our object was inline originally, since otherwise it would have ended up underneath
|
|
// the inlines.
|
|
m_staticX = box->xPos();
|
|
}
|
|
else if (!wasInline && hasStaticY()) {
|
|
// Our object was a block originally, so we make our normal flow position be
|
|
// just below the line box (as though all the inlines that came before us got
|
|
// wrapped in an anonymous block, which is what would have happened had we been
|
|
// in flow). This value was cached in the yPos() of the box.
|
|
m_staticY = box->yPos();
|
|
}
|
|
}
|
|
else if (isReplaced())
|
|
setPos( box->xPos(), box->yPos() );
|
|
}
|
|
|
|
void RenderBox::repaint(Priority prior)
|
|
{
|
|
int ow = style() ? style()->outlineSize() : 0;
|
|
if( isInline() && !isReplaced() )
|
|
{
|
|
RenderObject* p = parent();
|
|
Q_ASSERT(p);
|
|
while( p->isInline() && !p->isReplaced() )
|
|
p = p->parent();
|
|
int xoff = p->hasOverflowClip() ? 0 : p->overflowLeft();
|
|
int yoff = p->hasOverflowClip() ? 0 : p->overflowTop();
|
|
p->repaintRectangle( -ow + xoff, -ow + yoff, p->effectiveWidth()+ow*2, p->effectiveHeight()+ow*2, prior);
|
|
}
|
|
else
|
|
{
|
|
int xoff = hasOverflowClip() ? 0 : overflowLeft();
|
|
int yoff = hasOverflowClip() ? 0 : overflowTop();
|
|
repaintRectangle( -ow + xoff, -ow + yoff, effectiveWidth()+ow*2, effectiveHeight()+ow*2, prior);
|
|
}
|
|
}
|
|
|
|
void RenderBox::repaintRectangle(int x, int y, int w, int h, Priority p, bool f)
|
|
{
|
|
x += m_x;
|
|
y += m_y;
|
|
|
|
// Apply the relative position offset when invalidating a rectangle. The layer
|
|
// is translated, but the render box isn't, so we need to do this to get the
|
|
// right dirty rect. Since this is called from RenderObject::setStyle, the relative position
|
|
// flag on the RenderObject has been cleared, so use the one on the style().
|
|
if (style()->position() == RELATIVE && m_layer)
|
|
relativePositionOffset(x,y);
|
|
|
|
if (style()->position() == FIXED) f=true;
|
|
|
|
// kdDebug( 6040 ) << "RenderBox(" <<this << ", " << renderName() << ")::repaintRectangle (" << x << "/" << y << ") (" << w << "/" << h << ")" << endl;
|
|
RenderObject *o = container();
|
|
if( o ) {
|
|
if (o->layer()) {
|
|
if (o->style()->hidesOverflow() && o->layer() && !o->isInlineFlow())
|
|
o->layer()->subtractScrollOffset(x,y); // For overflow:auto/scroll/hidden.
|
|
if (style()->position() == ABSOLUTE)
|
|
o->layer()->checkInlineRelOffset(this,x,y);
|
|
}
|
|
o->repaintRectangle(x, y, w, h, p, f);
|
|
}
|
|
}
|
|
|
|
void RenderBox::relativePositionOffset(int &tx, int &ty) const
|
|
{
|
|
if(!style()->left().isVariable())
|
|
tx += style()->left().width(containingBlockWidth());
|
|
else if(!style()->right().isVariable())
|
|
tx -= style()->right().width(containingBlockWidth());
|
|
if(!style()->top().isVariable())
|
|
{
|
|
if (!style()->top().isPercent()
|
|
|| containingBlock()->style()->height().isFixed())
|
|
ty += style()->top().width(containingBlockHeight());
|
|
}
|
|
else if(!style()->bottom().isVariable())
|
|
{
|
|
if (!style()->bottom().isPercent()
|
|
|| containingBlock()->style()->height().isFixed())
|
|
ty -= style()->bottom().width(containingBlockHeight());
|
|
}
|
|
}
|
|
|
|
void RenderBox::calcWidth()
|
|
{
|
|
#ifdef DEBUG_LAYOUT
|
|
kdDebug( 6040 ) << "RenderBox("<<renderName()<<")::calcWidth()" << endl;
|
|
#endif
|
|
if (isPositioned())
|
|
{
|
|
calcAbsoluteHorizontal();
|
|
}
|
|
else
|
|
{
|
|
bool treatAsReplaced = isReplaced() && !isInlineBlockOrInlineTable();
|
|
Length w;
|
|
if (treatAsReplaced)
|
|
w = Length( calcReplacedWidth(), Fixed );
|
|
else
|
|
w = style()->width();
|
|
|
|
Length ml = style()->marginLeft();
|
|
Length mr = style()->marginRight();
|
|
|
|
int cw = containingBlockWidth();
|
|
if (cw<0) cw = 0;
|
|
|
|
m_marginLeft = 0;
|
|
m_marginRight = 0;
|
|
|
|
if (isInline() && !isInlineBlockOrInlineTable())
|
|
{
|
|
// just calculate margins
|
|
m_marginLeft = ml.minWidth(cw);
|
|
m_marginRight = mr.minWidth(cw);
|
|
if (treatAsReplaced)
|
|
{
|
|
m_width = calcBoxWidth(w.width(cw));
|
|
m_width = KMAX(m_width, m_minWidth);
|
|
}
|
|
|
|
return;
|
|
}
|
|
else
|
|
{
|
|
LengthType widthType, minWidthType, maxWidthType;
|
|
if (treatAsReplaced) {
|
|
m_width = calcBoxWidth(w.width(cw));
|
|
widthType = w.type();
|
|
} else {
|
|
m_width = calcWidthUsing(Width, cw, widthType);
|
|
int minW = calcWidthUsing(MinWidth, cw, minWidthType);
|
|
int maxW = style()->maxWidth().value() == UNDEFINED ?
|
|
m_width : calcWidthUsing(MaxWidth, cw, maxWidthType);
|
|
|
|
if (m_width > maxW) {
|
|
m_width = maxW;
|
|
widthType = maxWidthType;
|
|
}
|
|
if (m_width < minW) {
|
|
m_width = minW;
|
|
widthType = minWidthType;
|
|
}
|
|
}
|
|
|
|
if (widthType == Variable) {
|
|
// kdDebug( 6040 ) << "variable" << endl;
|
|
m_marginLeft = ml.minWidth(cw);
|
|
m_marginRight = mr.minWidth(cw);
|
|
}
|
|
else
|
|
{
|
|
// kdDebug( 6040 ) << "non-variable " << w.type << ","<< w.value << endl;
|
|
calcHorizontalMargins(ml,mr,cw);
|
|
}
|
|
}
|
|
|
|
if (cw && cw != m_width + m_marginLeft + m_marginRight && !isFloating() && !isInline())
|
|
{
|
|
if (containingBlock()->style()->direction()==LTR)
|
|
m_marginRight = cw - m_width - m_marginLeft;
|
|
else
|
|
m_marginLeft = cw - m_width - m_marginRight;
|
|
}
|
|
}
|
|
|
|
#ifdef DEBUG_LAYOUT
|
|
kdDebug( 6040 ) << "RenderBox::calcWidth(): m_width=" << m_width << " containingBlockWidth()=" << containingBlockWidth() << endl;
|
|
kdDebug( 6040 ) << "m_marginLeft=" << m_marginLeft << " m_marginRight=" << m_marginRight << endl;
|
|
#endif
|
|
}
|
|
|
|
int RenderBox::calcWidthUsing(WidthType widthType, int cw, LengthType& lengthType)
|
|
{
|
|
int width = m_width;
|
|
Length w;
|
|
if (widthType == Width)
|
|
w = style()->width();
|
|
else if (widthType == MinWidth)
|
|
w = style()->minWidth();
|
|
else
|
|
w = style()->maxWidth();
|
|
|
|
lengthType = w.type();
|
|
|
|
if (lengthType == Variable) {
|
|
int marginLeft = style()->marginLeft().minWidth(cw);
|
|
int marginRight = style()->marginRight().minWidth(cw);
|
|
if (cw) width = cw - marginLeft - marginRight;
|
|
|
|
// size to max width?
|
|
if (sizesToMaxWidth()) {
|
|
width = KMAX(width, (int)m_minWidth);
|
|
width = KMIN(width, (int)m_maxWidth);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
width = calcBoxWidth(w.width(cw));
|
|
}
|
|
|
|
return width;
|
|
}
|
|
|
|
void RenderBox::calcHorizontalMargins(const Length& ml, const Length& mr, int cw)
|
|
{
|
|
if (isFloating() || isInline()) // Inline blocks/tables and floats don't have their margins increased.
|
|
{
|
|
m_marginLeft = ml.minWidth(cw);
|
|
m_marginRight = mr.minWidth(cw);
|
|
}
|
|
else
|
|
{
|
|
if ( (ml.isVariable() && mr.isVariable() && m_width<cw) ||
|
|
(!ml.isVariable() && !mr.isVariable() &&
|
|
containingBlock()->style()->textAlign() == TDEHTML_CENTER) )
|
|
{
|
|
m_marginLeft = (cw - m_width)/2;
|
|
if (m_marginLeft<0) m_marginLeft=0;
|
|
m_marginRight = cw - m_width - m_marginLeft;
|
|
}
|
|
else if ( (mr.isVariable() && m_width<cw) ||
|
|
(!ml.isVariable() && containingBlock()->style()->direction() == RTL &&
|
|
containingBlock()->style()->textAlign() == TDEHTML_LEFT))
|
|
{
|
|
m_marginLeft = ml.width(cw);
|
|
m_marginRight = cw - m_width - m_marginLeft;
|
|
}
|
|
else if ( (ml.isVariable() && m_width<cw) ||
|
|
(!mr.isVariable() && containingBlock()->style()->direction() == LTR &&
|
|
containingBlock()->style()->textAlign() == TDEHTML_RIGHT))
|
|
{
|
|
m_marginRight = mr.width(cw);
|
|
m_marginLeft = cw - m_width - m_marginRight;
|
|
}
|
|
else
|
|
{
|
|
// this makes auto margins 0 if we failed a m_width<cw test above (css2.1, 10.3.3)
|
|
m_marginLeft = ml.minWidth(cw);
|
|
m_marginRight = mr.minWidth(cw);
|
|
}
|
|
}
|
|
}
|
|
|
|
void RenderBox::calcHeight()
|
|
{
|
|
|
|
#ifdef DEBUG_LAYOUT
|
|
kdDebug( 6040 ) << "RenderBox::calcHeight()" << endl;
|
|
#endif
|
|
|
|
//cell height is managed by table, inline elements do not have a height property.
|
|
if ( isTableCell() || (isInline() && !isReplaced()) )
|
|
return;
|
|
|
|
if (isPositioned())
|
|
calcAbsoluteVertical();
|
|
else
|
|
{
|
|
calcVerticalMargins();
|
|
|
|
// For tables, calculate margins only
|
|
if (isTable())
|
|
return;
|
|
|
|
Length h;
|
|
bool treatAsReplaced = isReplaced() && !isInlineBlockOrInlineTable();
|
|
bool checkMinMaxHeight = false;
|
|
|
|
if ( treatAsReplaced )
|
|
h = Length( calcReplacedHeight(), Fixed );
|
|
else {
|
|
h = style()->height();
|
|
checkMinMaxHeight = true;
|
|
}
|
|
|
|
int height;
|
|
if (checkMinMaxHeight) {
|
|
height = calcHeightUsing(style()->height());
|
|
if (height == -1)
|
|
height = m_height;
|
|
int minH = calcHeightUsing(style()->minHeight()); // Leave as -1 if unset.
|
|
int maxH = style()->maxHeight().value() == UNDEFINED ? height : calcHeightUsing(style()->maxHeight());
|
|
if (maxH == -1)
|
|
maxH = height;
|
|
height = kMin(maxH, height);
|
|
height = kMax(minH, height);
|
|
}
|
|
else {
|
|
// The only times we don't check min/max height are when a fixed length has
|
|
// been given as an override. Just use that.
|
|
height = calcBoxHeight(h.value());
|
|
}
|
|
|
|
if (height<m_height && !overhangingContents() && !hasOverflowClip())
|
|
setOverhangingContents();
|
|
|
|
m_height = height;
|
|
}
|
|
|
|
// Unfurling marquees override with the furled height.
|
|
if (style()->overflowX() == OMARQUEE && m_layer && m_layer->marquee() &&
|
|
m_layer->marquee()->isUnfurlMarquee() && !m_layer->marquee()->isHorizontal()) {
|
|
m_layer->marquee()->setEnd(m_height);
|
|
m_height = kMin(m_height, m_layer->marquee()->unfurlPos());
|
|
}
|
|
|
|
}
|
|
|
|
int RenderBox::calcHeightUsing(const Length& h)
|
|
{
|
|
int height = -1;
|
|
if (!h.isVariable()) {
|
|
if (h.isFixed())
|
|
height = h.value();
|
|
else if (h.isPercent())
|
|
height = calcPercentageHeight(h);
|
|
if (height != -1) {
|
|
height = calcBoxHeight(height);
|
|
return height;
|
|
}
|
|
}
|
|
return height;
|
|
}
|
|
|
|
int RenderBox::calcImplicitHeight() const {
|
|
assert(hasImplicitHeight());
|
|
|
|
RenderBlock* cb = containingBlock();
|
|
// padding-box height
|
|
int ch = cb->height() - cb->borderTop() + cb->borderBottom();
|
|
int top = style()->top().width(ch);
|
|
int bottom = style()->bottom().width(ch);
|
|
|
|
return ch - top - bottom;
|
|
}
|
|
|
|
int RenderBox::calcPercentageHeight(const Length& height, bool treatAsReplaced) const
|
|
{
|
|
int result = -1;
|
|
RenderBlock* cb = containingBlock();
|
|
// In quirk mode, table cells violate what the CSS spec says to do with heights.
|
|
if (cb->isTableCell() && style()->htmlHacks()) {
|
|
result = static_cast<RenderTableCell*>(cb)->cellPercentageHeight();
|
|
}
|
|
|
|
// Otherwise we only use our percentage height if our containing block had a specified
|
|
// height.
|
|
else if (cb->style()->height().isFixed())
|
|
result = cb->calcContentHeight(cb->style()->height().value());
|
|
else if (cb->style()->height().isPercent()) {
|
|
// We need to recur and compute the percentage height for our containing block.
|
|
result = cb->calcPercentageHeight(cb->style()->height(), treatAsReplaced);
|
|
if (result != -1)
|
|
result = cb->calcContentHeight(result);
|
|
}
|
|
else if (cb->isCanvas()) {
|
|
if (!canvas()->pagedMode())
|
|
result = static_cast<RenderCanvas*>(cb)->viewportHeight();
|
|
else
|
|
result = static_cast<RenderCanvas*>(cb)->height();
|
|
result -= cb->style()->borderTopWidth() - cb->style()->borderBottomWidth();
|
|
result -= cb->paddingTop() + cb->paddingBottom();
|
|
}
|
|
else if (cb->isBody() && style()->htmlHacks() &&
|
|
cb->style()->height().isVariable() && !cb->isFloatingOrPositioned()) {
|
|
int margins = cb->collapsedMarginTop() + cb->collapsedMarginBottom();
|
|
int visHeight = canvas()->viewportHeight();
|
|
RenderObject* p = cb->parent();
|
|
result = visHeight - (margins + p->marginTop() + p->marginBottom() +
|
|
p->borderTop() + p->borderBottom() +
|
|
p->paddingTop() + p->paddingBottom());
|
|
}
|
|
else if (cb->isRoot() && style()->htmlHacks() && cb->style()->height().isVariable()) {
|
|
int visHeight = canvas()->viewportHeight();
|
|
result = visHeight - (marginTop() + marginBottom() +
|
|
borderTop() + borderBottom() +
|
|
paddingTop() + paddingBottom());
|
|
}
|
|
else if (cb->isAnonymousBlock() || treatAsReplaced && style()->htmlHacks()) {
|
|
// IE quirk.
|
|
result = cb->calcPercentageHeight(cb->style()->height(), treatAsReplaced);
|
|
}
|
|
else if (cb->hasImplicitHeight()) {
|
|
result = cb->calcImplicitHeight();
|
|
}
|
|
|
|
if (result != -1) {
|
|
result = height.width(result);
|
|
if (cb->isTableCell() && style()->boxSizing() != BORDER_BOX) {
|
|
result -= (borderTop() + paddingTop() + borderBottom() + paddingBottom());
|
|
result = kMax(0, result);
|
|
}
|
|
}
|
|
return result;
|
|
}
|
|
|
|
short RenderBox::calcReplacedWidth() const
|
|
{
|
|
int width = calcReplacedWidthUsing(Width);
|
|
int minW = calcReplacedWidthUsing(MinWidth);
|
|
int maxW = style()->maxWidth().value() == UNDEFINED ? width : calcReplacedWidthUsing(MaxWidth);
|
|
|
|
if (width > maxW)
|
|
width = maxW;
|
|
|
|
if (width < minW)
|
|
width = minW;
|
|
|
|
return width;
|
|
}
|
|
|
|
int RenderBox::calcReplacedWidthUsing(WidthType widthType) const
|
|
{
|
|
Length w;
|
|
if (widthType == Width)
|
|
w = style()->width();
|
|
else if (widthType == MinWidth)
|
|
w = style()->minWidth();
|
|
else
|
|
w = style()->maxWidth();
|
|
|
|
switch (w.type()) {
|
|
case Fixed:
|
|
return w.value();
|
|
case Percent:
|
|
{
|
|
const int cw = containingBlockWidth();
|
|
if (cw > 0) {
|
|
int result = w.minWidth(cw);
|
|
return result;
|
|
}
|
|
}
|
|
// fall through
|
|
default:
|
|
return intrinsicWidth();
|
|
}
|
|
}
|
|
|
|
int RenderBox::calcReplacedHeight() const
|
|
{
|
|
int height = calcReplacedHeightUsing(Height);
|
|
int minH = calcReplacedHeightUsing(MinHeight);
|
|
int maxH = style()->maxHeight().value() == UNDEFINED ? height : calcReplacedHeightUsing(MaxHeight);
|
|
|
|
if (height > maxH)
|
|
height = maxH;
|
|
|
|
if (height < minH)
|
|
height = minH;
|
|
|
|
return height;
|
|
}
|
|
|
|
int RenderBox::calcReplacedHeightUsing(HeightType heightType) const
|
|
{
|
|
Length h;
|
|
if (heightType == Height)
|
|
h = style()->height();
|
|
else if (heightType == MinHeight)
|
|
h = style()->minHeight();
|
|
else
|
|
h = style()->maxHeight();
|
|
switch( h.type() ) {
|
|
case Fixed:
|
|
return h.value();
|
|
case Percent:
|
|
{
|
|
int th = calcPercentageHeight(h, true);
|
|
if (th != -1)
|
|
return th;
|
|
// fall through
|
|
}
|
|
default:
|
|
return intrinsicHeight();
|
|
};
|
|
}
|
|
|
|
int RenderBox::availableHeight() const
|
|
{
|
|
return availableHeightUsing(style()->height());
|
|
}
|
|
|
|
int RenderBox::availableHeightUsing(const Length& h) const
|
|
{
|
|
if (h.isFixed())
|
|
return calcContentHeight(h.value());
|
|
|
|
if (isCanvas())
|
|
if (static_cast<const RenderCanvas*>(this)->pagedMode())
|
|
return static_cast<const RenderCanvas*>(this)->pageHeight();
|
|
else
|
|
return static_cast<const RenderCanvas*>(this)->viewportHeight();
|
|
|
|
// We need to stop here, since we don't want to increase the height of the table
|
|
// artificially. We're going to rely on this cell getting expanded to some new
|
|
// height, and then when we lay out again we'll use the calculation below.
|
|
if (isTableCell() && (h.isVariable() || h.isPercent())) {
|
|
const RenderTableCell* tableCell = static_cast<const RenderTableCell*>(this);
|
|
return tableCell->cellPercentageHeight() -
|
|
(borderTop()+borderBottom()+paddingTop()+paddingBottom());
|
|
}
|
|
|
|
if (h.isPercent())
|
|
return calcContentHeight(h.width(containingBlock()->availableHeight()));
|
|
|
|
// Check for implicit height
|
|
if (hasImplicitHeight())
|
|
return calcImplicitHeight();
|
|
|
|
return containingBlock()->availableHeight();
|
|
}
|
|
|
|
int RenderBox::availableWidth() const
|
|
{
|
|
return availableWidthUsing(style()->width());
|
|
}
|
|
|
|
int RenderBox::availableWidthUsing(const Length& w) const
|
|
{
|
|
if (w.isFixed())
|
|
return calcContentWidth(w.value());
|
|
|
|
if (isCanvas())
|
|
return static_cast<const RenderCanvas*>(this)->viewportWidth();
|
|
|
|
if (w.isPercent())
|
|
return calcContentWidth(w.width(containingBlock()->availableWidth()));
|
|
|
|
return containingBlock()->availableWidth();
|
|
}
|
|
|
|
void RenderBox::calcVerticalMargins()
|
|
{
|
|
if( isTableCell() ) {
|
|
// table margins are basically infinite
|
|
m_marginTop = TABLECELLMARGIN;
|
|
m_marginBottom = TABLECELLMARGIN;
|
|
return;
|
|
}
|
|
|
|
Length tm = style()->marginTop();
|
|
Length bm = style()->marginBottom();
|
|
|
|
// margins are calculated with respect to the _width_ of
|
|
// the containing block (8.3)
|
|
int cw = containingBlock()->contentWidth();
|
|
|
|
m_marginTop = tm.minWidth(cw);
|
|
m_marginBottom = bm.minWidth(cw);
|
|
}
|
|
|
|
void RenderBox::setStaticX(short staticX)
|
|
{
|
|
m_staticX = staticX;
|
|
}
|
|
|
|
void RenderBox::setStaticY(int staticY)
|
|
{
|
|
m_staticY = staticY;
|
|
}
|
|
|
|
void RenderBox::calcAbsoluteHorizontal()
|
|
{
|
|
if (isReplaced()) {
|
|
calcAbsoluteHorizontalReplaced();
|
|
return;
|
|
}
|
|
|
|
// QUESTIONS
|
|
// FIXME 1: Which RenderObject's 'direction' property should used: the
|
|
// containing block (cb) as the spec seems to imply, the parent (parent()) as
|
|
// was previously done in calculating the static distances, or ourself, which
|
|
// was also previously done for deciding what to override when you had
|
|
// over-constrained margins? Also note that the container block is used
|
|
// in similar situations in other parts of the RenderBox class (see calcWidth()
|
|
// and calcHorizontalMargins()). For now we are using the parent for quirks
|
|
// mode and the containing block for strict mode.
|
|
|
|
// FIXME 2: Can perhaps optimize out cases when max-width/min-width are greater
|
|
// than or less than the computed m_width. Be careful of box-sizing and
|
|
// percentage issues.
|
|
|
|
// The following is based off of the W3C Working Draft from April 11, 2006 of
|
|
// CSS 2.1: Section 10.3.7 "Absolutely positioned, non-replaced elements"
|
|
// <http://www.w3.org/TR/CSS21/visudet.html#abs-non-replaced-width>
|
|
// (block-style-comments in this function and in calcAbsoluteHorizontalValues()
|
|
// correspond to text from the spec)
|
|
|
|
|
|
// We don't use containingBlock(), since we may be positioned by an enclosing
|
|
// relative positioned inline.
|
|
const RenderObject* containerBlock = container();
|
|
|
|
// FIXME: This is incorrect for cases where the container block is a relatively
|
|
// positioned inline.
|
|
const int containerWidth = containingBlockWidth() + containerBlock->paddingLeft() + containerBlock->paddingRight();
|
|
|
|
// To match WinIE, in quirks mode use the parent's 'direction' property
|
|
// instead of the the container block's.
|
|
EDirection containerDirection = (style()->htmlHacks()) ? parent()->style()->direction() : containerBlock->style()->direction();
|
|
|
|
const int bordersPlusPadding = borderLeft() + borderRight() + paddingLeft() + paddingRight();
|
|
const Length marginLeft = style()->marginLeft();
|
|
const Length marginRight = style()->marginRight();
|
|
Length left = style()->left();
|
|
Length right = style()->right();
|
|
|
|
/*---------------------------------------------------------------------------*\
|
|
* For the purposes of this section and the next, the term "static position"
|
|
* (of an element) refers, roughly, to the position an element would have had
|
|
* in the normal flow. More precisely:
|
|
*
|
|
* * The static position for 'left' is the distance from the left edge of the
|
|
* containing block to the left margin edge of a hypothetical box that would
|
|
* have been the first box of the element if its 'position' property had
|
|
* been 'static' and 'float' had been 'none'. The value is negative if the
|
|
* hypothetical box is to the left of the containing block.
|
|
* * The static position for 'right' is the distance from the right edge of the
|
|
* containing block to the right margin edge of the same hypothetical box as
|
|
* above. The value is positive if the hypothetical box is to the left of the
|
|
* containing block's edge.
|
|
*
|
|
* But rather than actually calculating the dimensions of that hypothetical box,
|
|
* user agents are free to make a guess at its probable position.
|
|
*
|
|
* For the purposes of calculating the static position, the containing block of
|
|
* fixed positioned elements is the initial containing block instead of the
|
|
* viewport, and all scrollable boxes should be assumed to be scrolled to their
|
|
* origin.
|
|
\*---------------------------------------------------------------------------*/
|
|
|
|
// Calculate the static distance if needed.
|
|
if (left.isVariable() && right.isVariable()) {
|
|
if (containerDirection == LTR) {
|
|
// 'm_staticX' should already have been set through layout of the parent.
|
|
int staticPosition = m_staticX - containerBlock->borderLeft();
|
|
for (RenderObject* po = parent(); po && po != containerBlock; po = po->parent())
|
|
staticPosition += po->xPos();
|
|
left = Length(staticPosition, Fixed);
|
|
} else {
|
|
RenderObject* po = parent();
|
|
// 'm_staticX' should already have been set through layout of the parent.
|
|
int staticPosition = m_staticX + containerWidth + containerBlock->borderRight() - po->width();
|
|
for (; po && po != containerBlock; po = po->parent())
|
|
staticPosition -= po->xPos();
|
|
right = Length(staticPosition, Fixed);
|
|
}
|
|
}
|
|
|
|
// Calculate constraint equation values for 'width' case.
|
|
calcAbsoluteHorizontalValues(style()->width(), containerBlock, containerDirection,
|
|
containerWidth, bordersPlusPadding,
|
|
left, right, marginLeft, marginRight,
|
|
m_width, m_marginLeft, m_marginRight, m_x);
|
|
// Calculate constraint equation values for 'max-width' case.calcContentWidth(width.width(containerWidth));
|
|
if (style()->maxWidth().value() != UNDEFINED) {
|
|
short maxWidth;
|
|
short maxMarginLeft;
|
|
short maxMarginRight;
|
|
short maxXPos;
|
|
|
|
calcAbsoluteHorizontalValues(style()->maxWidth(), containerBlock, containerDirection,
|
|
containerWidth, bordersPlusPadding,
|
|
left, right, marginLeft, marginRight,
|
|
maxWidth, maxMarginLeft, maxMarginRight, maxXPos);
|
|
|
|
if (m_width > maxWidth) {
|
|
m_width = maxWidth;
|
|
m_marginLeft = maxMarginLeft;
|
|
m_marginRight = maxMarginRight;
|
|
m_x = maxXPos;
|
|
}
|
|
}
|
|
|
|
// Calculate constraint equation values for 'min-width' case.
|
|
if (style()->minWidth().value()) {
|
|
short minWidth;
|
|
short minMarginLeft;
|
|
short minMarginRight;
|
|
short minXPos;
|
|
|
|
calcAbsoluteHorizontalValues(style()->minWidth(), containerBlock, containerDirection,
|
|
containerWidth, bordersPlusPadding,
|
|
left, right, marginLeft, marginRight,
|
|
minWidth, minMarginLeft, minMarginRight, minXPos);
|
|
|
|
if (m_width < minWidth) {
|
|
m_width = minWidth;
|
|
m_marginLeft = minMarginLeft;
|
|
m_marginRight = minMarginRight;
|
|
m_x = minXPos;
|
|
}
|
|
}
|
|
|
|
// Put m_width into correct form.
|
|
m_width += bordersPlusPadding;
|
|
}
|
|
|
|
void RenderBox::calcAbsoluteHorizontalValues(Length width, const RenderObject* containerBlock, EDirection containerDirection,
|
|
const int containerWidth, const int bordersPlusPadding,
|
|
const Length left, const Length right, const Length marginLeft, const Length marginRight,
|
|
short& widthValue, short& marginLeftValue, short& marginRightValue, short& xPos)
|
|
{
|
|
// 'left' and 'right' cannot both be 'auto' because one would of been
|
|
// converted to the static postion already
|
|
assert(!(left.isVariable() && right.isVariable()));
|
|
|
|
int leftValue = 0;
|
|
|
|
bool widthIsAuto = width.isVariable();
|
|
bool leftIsAuto = left.isVariable();
|
|
bool rightIsAuto = right.isVariable();
|
|
|
|
if (!leftIsAuto && !widthIsAuto && !rightIsAuto) {
|
|
/*-----------------------------------------------------------------------*\
|
|
* If none of the three is 'auto': If both 'margin-left' and 'margin-
|
|
* right' are 'auto', solve the equation under the extra constraint that
|
|
* the two margins get equal values, unless this would make them negative,
|
|
* in which case when direction of the containing block is 'ltr' ('rtl'),
|
|
* set 'margin-left' ('margin-right') to zero and solve for 'margin-right'
|
|
* ('margin-left'). If one of 'margin-left' or 'margin-right' is 'auto',
|
|
* solve the equation for that value. If the values are over-constrained,
|
|
* ignore the value for 'left' (in case the 'direction' property of the
|
|
* containing block is 'rtl') or 'right' (in case 'direction' is 'ltr')
|
|
* and solve for that value.
|
|
\*-----------------------------------------------------------------------*/
|
|
// NOTE: It is not necessary to solve for 'right' in the over constrained
|
|
// case because the value is not used for any further calculations.
|
|
|
|
leftValue = left.width(containerWidth);
|
|
widthValue = calcContentWidth(width.width(containerWidth));
|
|
|
|
const int availableSpace = containerWidth - (leftValue + widthValue + right.width(containerWidth) + bordersPlusPadding);
|
|
|
|
// Margins are now the only unknown
|
|
if (marginLeft.isVariable() && marginRight.isVariable()) {
|
|
// Both margins auto, solve for equality
|
|
if (availableSpace >= 0) {
|
|
marginLeftValue = availableSpace / 2; // split the diference
|
|
marginRightValue = availableSpace - marginLeftValue; // account for odd valued differences
|
|
} else {
|
|
// see FIXME 1
|
|
if (containerDirection == LTR) {
|
|
marginLeftValue = 0;
|
|
marginRightValue = availableSpace; // will be negative
|
|
} else {
|
|
marginLeftValue = availableSpace; // will be negative
|
|
marginRightValue = 0;
|
|
}
|
|
}
|
|
} else if (marginLeft.isVariable()) {
|
|
// Solve for left margin
|
|
marginRightValue = marginRight.width(containerWidth);
|
|
marginLeftValue = availableSpace - marginRightValue;
|
|
} else if (marginRight.isVariable()) {
|
|
// Solve for right margin
|
|
marginLeftValue = marginLeft.width(containerWidth);
|
|
marginRightValue = availableSpace - marginLeftValue;
|
|
} else {
|
|
// Over-constrained, solve for left if direction is RTL
|
|
marginLeftValue = marginLeft.width(containerWidth);
|
|
marginRightValue = marginRight.width(containerWidth);
|
|
|
|
// see FIXME 1 -- used to be "this->style()->direction()"
|
|
if (containerDirection == RTL)
|
|
leftValue = (availableSpace + leftValue) - marginLeftValue - marginRightValue;
|
|
}
|
|
} else {
|
|
/*--------------------------------------------------------------------*\
|
|
* Otherwise, set 'auto' values for 'margin-left' and 'margin-right'
|
|
* to 0, and pick the one of the following six rules that applies.
|
|
*
|
|
* 1. 'left' and 'width' are 'auto' and 'right' is not 'auto', then the
|
|
* width is shrink-to-fit. Then solve for 'left'
|
|
*
|
|
* OMIT RULE 2 AS IT SHOULD NEVER BE HIT
|
|
* ------------------------------------------------------------------
|
|
* 2. 'left' and 'right' are 'auto' and 'width' is not 'auto', then if
|
|
* the 'direction' property of the containing block is 'ltr' set
|
|
* 'left' to the static position, otherwise set 'right' to the
|
|
* static position. Then solve for 'left' (if 'direction is 'rtl')
|
|
* or 'right' (if 'direction' is 'ltr').
|
|
* ------------------------------------------------------------------
|
|
*
|
|
* 3. 'width' and 'right' are 'auto' and 'left' is not 'auto', then the
|
|
* width is shrink-to-fit . Then solve for 'right'
|
|
* 4. 'left' is 'auto', 'width' and 'right' are not 'auto', then solve
|
|
* for 'left'
|
|
* 5. 'width' is 'auto', 'left' and 'right' are not 'auto', then solve
|
|
* for 'width'
|
|
* 6. 'right' is 'auto', 'left' and 'width' are not 'auto', then solve
|
|
* for 'right'
|
|
*
|
|
* Calculation of the shrink-to-fit width is similar to calculating the
|
|
* width of a table cell using the automatic table layout algorithm.
|
|
* Roughly: calculate the preferred width by formatting the content
|
|
* without breaking lines other than where explicit line breaks occur,
|
|
* and also calculate the preferred minimum width, e.g., by trying all
|
|
* possible line breaks. CSS 2.1 does not define the exact algorithm.
|
|
* Thirdly, calculate the available width: this is found by solving
|
|
* for 'width' after setting 'left' (in case 1) or 'right' (in case 3)
|
|
* to 0.
|
|
*
|
|
* Then the shrink-to-fit width is:
|
|
* kMin(kMax(preferred minimum width, available width), preferred width).
|
|
\*--------------------------------------------------------------------*/
|
|
// NOTE: For rules 3 and 6 it is not necessary to solve for 'right'
|
|
// because the value is not used for any further calculations.
|
|
|
|
// Calculate margins, 'auto' margins are ignored.
|
|
marginLeftValue = marginLeft.minWidth(containerWidth);
|
|
marginRightValue = marginRight.minWidth(containerWidth);
|
|
|
|
const int availableSpace = containerWidth - (marginLeftValue + marginRightValue + bordersPlusPadding);
|
|
|
|
// FIXME: Is there a faster way to find the correct case?
|
|
// Use rule/case that applies.
|
|
if (leftIsAuto && widthIsAuto && !rightIsAuto) {
|
|
// RULE 1: (use shrink-to-fit for width, and solve of left)
|
|
int rightValue = right.width(containerWidth);
|
|
|
|
// FIXME: would it be better to have shrink-to-fit in one step?
|
|
int preferredWidth = m_maxWidth - bordersPlusPadding;
|
|
int preferredMinWidth = m_minWidth - bordersPlusPadding;
|
|
int availableWidth = availableSpace - rightValue;
|
|
widthValue = kMin(kMax(preferredMinWidth, availableWidth), preferredWidth);
|
|
leftValue = availableSpace - (widthValue + rightValue);
|
|
} else if (!leftIsAuto && widthIsAuto && rightIsAuto) {
|
|
// RULE 3: (use shrink-to-fit for width, and no need solve of right)
|
|
leftValue = left.width(containerWidth);
|
|
|
|
// FIXME: would it be better to have shrink-to-fit in one step?
|
|
int preferredWidth = m_maxWidth - bordersPlusPadding;
|
|
int preferredMinWidth = m_minWidth - bordersPlusPadding;
|
|
int availableWidth = availableSpace - leftValue;
|
|
widthValue = kMin(kMax(preferredMinWidth, availableWidth), preferredWidth);
|
|
} else if (leftIsAuto && !width.isVariable() && !rightIsAuto) {
|
|
// RULE 4: (solve for left)
|
|
widthValue = calcContentWidth(width.width(containerWidth));
|
|
leftValue = availableSpace - (widthValue + right.width(containerWidth));
|
|
} else if (!leftIsAuto && widthIsAuto && !rightIsAuto) {
|
|
// RULE 5: (solve for width)
|
|
leftValue = left.width(containerWidth);
|
|
widthValue = availableSpace - (leftValue + right.width(containerWidth));
|
|
} else if (!leftIsAuto&& !widthIsAuto && rightIsAuto) {
|
|
// RULE 6: (no need solve for right)
|
|
leftValue = left.width(containerWidth);
|
|
widthValue = calcContentWidth(width.width(containerWidth));
|
|
}
|
|
}
|
|
|
|
// Use computed values to calculate the horizontal position.
|
|
xPos = leftValue + marginLeftValue + containerBlock->borderLeft();
|
|
}
|
|
|
|
|
|
void RenderBox::calcAbsoluteVertical()
|
|
{
|
|
if (isReplaced()) {
|
|
calcAbsoluteVerticalReplaced();
|
|
return;
|
|
}
|
|
|
|
// The following is based off of the W3C Working Draft from April 11, 2006 of
|
|
// CSS 2.1: Section 10.6.4 "Absolutely positioned, non-replaced elements"
|
|
// <http://www.w3.org/TR/2005/WD-CSS21-20050613/visudet.html#abs-non-replaced-height>
|
|
// (block-style-comments in this function and in calcAbsoluteVerticalValues()
|
|
// correspond to text from the spec)
|
|
|
|
|
|
// We don't use containingBlock(), since we may be positioned by an enclosing relpositioned inline.
|
|
const RenderObject* containerBlock = container();
|
|
const int containerHeight = containerBlock->height() - containerBlock->borderTop() - containerBlock->borderBottom();
|
|
|
|
const int bordersPlusPadding = borderTop() + borderBottom() + paddingTop() + paddingBottom();
|
|
const Length marginTop = style()->marginTop();
|
|
const Length marginBottom = style()->marginBottom();
|
|
Length top = style()->top();
|
|
Length bottom = style()->bottom();
|
|
|
|
/*---------------------------------------------------------------------------*\
|
|
* For the purposes of this section and the next, the term "static position"
|
|
* (of an element) refers, roughly, to the position an element would have had
|
|
* in the normal flow. More precisely, the static position for 'top' is the
|
|
* distance from the top edge of the containing block to the top margin edge
|
|
* of a hypothetical box that would have been the first box of the element if
|
|
* its 'position' property had been 'static' and 'float' had been 'none'. The
|
|
* value is negative if the hypothetical box is above the containing block.
|
|
*
|
|
* But rather than actually calculating the dimensions of that hypothetical
|
|
* box, user agents are free to make a guess at its probable position.
|
|
*
|
|
* For the purposes of calculating the static position, the containing block
|
|
* of fixed positioned elements is the initial containing block instead of
|
|
* the viewport.
|
|
\*---------------------------------------------------------------------------*/
|
|
|
|
// Calculate the static distance if needed.
|
|
if (top.isVariable() && bottom.isVariable()) {
|
|
// m_staticY should already have been set through layout of the parent()
|
|
int staticTop = m_staticY - containerBlock->borderTop();
|
|
for (RenderObject* po = parent(); po && po != containerBlock; po = po->parent()) {
|
|
staticTop += po->yPos();
|
|
}
|
|
top.setValue(Fixed, staticTop);
|
|
}
|
|
|
|
|
|
int height; // Needed to compute overflow.
|
|
|
|
// Calculate constraint equation values for 'height' case.
|
|
calcAbsoluteVerticalValues(style()->height(), containerBlock, containerHeight, bordersPlusPadding,
|
|
top, bottom, marginTop, marginBottom,
|
|
height, m_marginTop, m_marginBottom, m_y);
|
|
|
|
// Avoid doing any work in the common case (where the values of min-height and max-height are their defaults).
|
|
// see FIXME 2
|
|
|
|
// Calculate constraint equation values for 'max-height' case.
|
|
if (style()->maxHeight().value() != UNDEFINED) {
|
|
int maxHeight;
|
|
short maxMarginTop;
|
|
short maxMarginBottom;
|
|
int maxYPos;
|
|
|
|
calcAbsoluteVerticalValues(style()->maxHeight(), containerBlock, containerHeight, bordersPlusPadding,
|
|
top, bottom, marginTop, marginBottom,
|
|
maxHeight, maxMarginTop, maxMarginBottom, maxYPos);
|
|
|
|
if (height > maxHeight) {
|
|
height = maxHeight;
|
|
m_marginTop = maxMarginTop;
|
|
m_marginBottom = maxMarginBottom;
|
|
m_y = maxYPos;
|
|
}
|
|
}
|
|
|
|
// Calculate constraint equation values for 'min-height' case.
|
|
if (style()->minHeight().value()) {
|
|
int minHeight;
|
|
short minMarginTop;
|
|
short minMarginBottom;
|
|
int minYPos;
|
|
|
|
calcAbsoluteVerticalValues(style()->minHeight(), containerBlock, containerHeight, bordersPlusPadding,
|
|
top, bottom, marginTop, marginBottom,
|
|
minHeight, minMarginTop, minMarginBottom, minYPos);
|
|
|
|
if (height < minHeight) {
|
|
height = minHeight;
|
|
m_marginTop = minMarginTop;
|
|
m_marginBottom = minMarginBottom;
|
|
m_y = minYPos;
|
|
}
|
|
}
|
|
|
|
height += bordersPlusPadding;
|
|
|
|
// Set final height value.
|
|
m_height = height;
|
|
}
|
|
|
|
void RenderBox::calcAbsoluteVerticalValues(Length height, const RenderObject* containerBlock,
|
|
const int containerHeight, const int bordersPlusPadding,
|
|
const Length top, const Length bottom, const Length marginTop, const Length marginBottom,
|
|
int& heightValue, short& marginTopValue, short& marginBottomValue, int& yPos)
|
|
{
|
|
// 'top' and 'bottom' cannot both be 'auto' because 'top would of been
|
|
// converted to the static position in calcAbsoluteVertical()
|
|
assert(!(top.isVariable() && bottom.isVariable()));
|
|
|
|
int contentHeight = m_height - bordersPlusPadding;
|
|
|
|
int topValue = 0;
|
|
|
|
bool heightIsAuto = height.isVariable();
|
|
bool topIsAuto = top.isVariable();
|
|
bool bottomIsAuto = bottom.isVariable();
|
|
|
|
if (isTable() && heightIsAuto) {
|
|
// Height is never unsolved for tables. "auto" means shrink to fit.
|
|
// Use our height instead.
|
|
heightValue = contentHeight;
|
|
heightIsAuto = false;
|
|
} else if (!heightIsAuto) {
|
|
heightValue = calcContentHeight(height.width(containerHeight));
|
|
if (contentHeight > heightValue) {
|
|
if (!isTable())
|
|
contentHeight = heightValue;
|
|
else
|
|
heightValue = contentHeight;
|
|
}
|
|
}
|
|
|
|
|
|
if (!topIsAuto && !heightIsAuto && !bottomIsAuto) {
|
|
/*-----------------------------------------------------------------------*\
|
|
* If none of the three are 'auto': If both 'margin-top' and 'margin-
|
|
* bottom' are 'auto', solve the equation under the extra constraint that
|
|
* the two margins get equal values. If one of 'margin-top' or 'margin-
|
|
* bottom' is 'auto', solve the equation for that value. If the values
|
|
* are over-constrained, ignore the value for 'bottom' and solve for that
|
|
* value.
|
|
\*-----------------------------------------------------------------------*/
|
|
// NOTE: It is not necessary to solve for 'bottom' in the over constrained
|
|
// case because the value is not used for any further calculations.
|
|
|
|
topValue = top.width(containerHeight);
|
|
|
|
const int availableSpace = containerHeight - (topValue + heightValue + bottom.width(containerHeight) + bordersPlusPadding);
|
|
|
|
// Margins are now the only unknown
|
|
if (marginTop.isVariable() && marginBottom.isVariable()) {
|
|
// Both margins auto, solve for equality
|
|
// NOTE: This may result in negative values.
|
|
marginTopValue = availableSpace / 2; // split the diference
|
|
marginBottomValue = availableSpace - marginTopValue; // account for odd valued differences
|
|
} else if (marginTop.isVariable()) {
|
|
// Solve for top margin
|
|
marginBottomValue = marginBottom.width(containerHeight);
|
|
marginTopValue = availableSpace - marginBottomValue;
|
|
} else if (marginBottom.isVariable()) {
|
|
// Solve for bottom margin
|
|
marginTopValue = marginTop.width(containerHeight);
|
|
marginBottomValue = availableSpace - marginTopValue;
|
|
} else {
|
|
// Over-constrained, (no need solve for bottom)
|
|
marginTopValue = marginTop.width(containerHeight);
|
|
marginBottomValue = marginBottom.width(containerHeight);
|
|
}
|
|
} else {
|
|
/*--------------------------------------------------------------------*\
|
|
* Otherwise, set 'auto' values for 'margin-top' and 'margin-bottom'
|
|
* to 0, and pick the one of the following six rules that applies.
|
|
*
|
|
* 1. 'top' and 'height' are 'auto' and 'bottom' is not 'auto', then
|
|
* the height is based on the content, and solve for 'top'.
|
|
*
|
|
* OMIT RULE 2 AS IT SHOULD NEVER BE HIT
|
|
* ------------------------------------------------------------------
|
|
* 2. 'top' and 'bottom' are 'auto' and 'height' is not 'auto', then
|
|
* set 'top' to the static position, and solve for 'bottom'.
|
|
* ------------------------------------------------------------------
|
|
*
|
|
* 3. 'height' and 'bottom' are 'auto' and 'top' is not 'auto', then
|
|
* the height is based on the content, and solve for 'bottom'.
|
|
* 4. 'top' is 'auto', 'height' and 'bottom' are not 'auto', and
|
|
* solve for 'top'.
|
|
* 5. 'height' is 'auto', 'top' and 'bottom' are not 'auto', and
|
|
* solve for 'height'.
|
|
* 6. 'bottom' is 'auto', 'top' and 'height' are not 'auto', and
|
|
* solve for 'bottom'.
|
|
\*--------------------------------------------------------------------*/
|
|
// NOTE: For rules 3 and 6 it is not necessary to solve for 'bottom'
|
|
// because the value is not used for any further calculations.
|
|
|
|
// Calculate margins, 'auto' margins are ignored.
|
|
marginTopValue = marginTop.minWidth(containerHeight);
|
|
marginBottomValue = marginBottom.minWidth(containerHeight);
|
|
|
|
const int availableSpace = containerHeight - (marginTopValue + marginBottomValue + bordersPlusPadding);
|
|
|
|
// Use rule/case that applies.
|
|
if (topIsAuto && heightIsAuto && !bottomIsAuto) {
|
|
// RULE 1: (height is content based, solve of top)
|
|
heightValue = contentHeight;
|
|
topValue = availableSpace - (heightValue + bottom.width(containerHeight));
|
|
}
|
|
else if (topIsAuto && !heightIsAuto && bottomIsAuto) {
|
|
// RULE 2: (shouldn't happen)
|
|
}
|
|
else if (!topIsAuto && heightIsAuto && bottomIsAuto) {
|
|
// RULE 3: (height is content based, no need solve of bottom)
|
|
heightValue = contentHeight;
|
|
topValue = top.width(containerHeight);
|
|
} else if (topIsAuto && !heightIsAuto && !bottomIsAuto) {
|
|
// RULE 4: (solve of top)
|
|
topValue = availableSpace - (heightValue + bottom.width(containerHeight));
|
|
} else if (!topIsAuto && heightIsAuto && !bottomIsAuto) {
|
|
// RULE 5: (solve of height)
|
|
topValue = top.width(containerHeight);
|
|
heightValue = kMax(0, availableSpace - (topValue + bottom.width(containerHeight)));
|
|
} else if (!topIsAuto && !heightIsAuto && bottomIsAuto) {
|
|
// RULE 6: (no need solve of bottom)
|
|
topValue = top.width(containerHeight);
|
|
}
|
|
}
|
|
|
|
// Use computed values to calculate the vertical position.
|
|
yPos = topValue + marginTopValue + containerBlock->borderTop();
|
|
}
|
|
|
|
void RenderBox::calcAbsoluteHorizontalReplaced()
|
|
{
|
|
// The following is based off of the W3C Working Draft from April 11, 2006 of
|
|
// CSS 2.1: Section 10.3.8 "Absolutly positioned, replaced elements"
|
|
// <http://www.w3.org/TR/2005/WD-CSS21-20050613/visudet.html#abs-replaced-width>
|
|
// (block-style-comments in this function correspond to text from the spec and
|
|
// the numbers correspond to numbers in spec)
|
|
|
|
// We don't use containingBlock(), since we may be positioned by an enclosing relpositioned inline.
|
|
const RenderObject* containerBlock = container();
|
|
|
|
// FIXME: This is incorrect for cases where the container block is a relatively
|
|
// positioned inline.
|
|
const int containerWidth = containingBlockWidth() + containerBlock->paddingLeft() + containerBlock->paddingRight();
|
|
|
|
// To match WinIE, in quirks mode use the parent's 'direction' property
|
|
// instead of the the container block's.
|
|
EDirection containerDirection = (style()->htmlHacks()) ? parent()->style()->direction() : containerBlock->style()->direction();
|
|
|
|
// Variables to solve.
|
|
Length left = style()->left();
|
|
Length right = style()->right();
|
|
Length marginLeft = style()->marginLeft();
|
|
Length marginRight = style()->marginRight();
|
|
|
|
|
|
/*-----------------------------------------------------------------------*\
|
|
* 1. The used value of 'width' is determined as for inline replaced
|
|
* elements.
|
|
\*-----------------------------------------------------------------------*/
|
|
// NOTE: This value of width is FINAL in that the min/max width calculations
|
|
// are dealt with in calcReplacedWidth(). This means that the steps to produce
|
|
// correct max/min in the non-replaced version, are not necessary.
|
|
m_width = calcReplacedWidth() + borderLeft() + borderRight() + paddingLeft() + paddingRight();
|
|
const int availableSpace = containerWidth - m_width;
|
|
|
|
/*-----------------------------------------------------------------------*\
|
|
* 2. If both 'left' and 'right' have the value 'auto', then if 'direction'
|
|
* of the containing block is 'ltr', set 'left' to the static position;
|
|
* else if 'direction' is 'rtl', set 'right' to the static position.
|
|
\*-----------------------------------------------------------------------*/
|
|
if (left.isVariable() && right.isVariable()) {
|
|
// see FIXME 1
|
|
if (containerDirection == LTR) {
|
|
// 'm_staticX' should already have been set through layout of the parent.
|
|
int staticPosition = m_staticX - containerBlock->borderLeft();
|
|
for (RenderObject* po = parent(); po && po != containerBlock; po = po->parent())
|
|
staticPosition += po->xPos();
|
|
left.setValue(Fixed, staticPosition);
|
|
} else {
|
|
RenderObject* po = parent();
|
|
// 'm_staticX' should already have been set through layout of the parent.
|
|
int staticPosition = m_staticX + containerWidth + containerBlock->borderRight() - po->width();
|
|
for (; po && po != containerBlock; po = po->parent())
|
|
staticPosition -= po->xPos();
|
|
right.setValue(Fixed, staticPosition);
|
|
}
|
|
}
|
|
|
|
/*-----------------------------------------------------------------------*\
|
|
* 3. If 'left' or 'right' are 'auto', replace any 'auto' on 'margin-left'
|
|
* or 'margin-right' with '0'.
|
|
\*-----------------------------------------------------------------------*/
|
|
if (left.isVariable() || right.isVariable()) {
|
|
if (marginLeft.isVariable())
|
|
marginLeft.setValue(Fixed, 0);
|
|
if (marginRight.isVariable())
|
|
marginRight.setValue(Fixed, 0);
|
|
}
|
|
|
|
/*-----------------------------------------------------------------------*\
|
|
* 4. If at this point both 'margin-left' and 'margin-right' are still
|
|
* 'auto', solve the equation under the extra constraint that the two
|
|
* margins must get equal values, unless this would make them negative,
|
|
* in which case when the direction of the containing block is 'ltr'
|
|
* ('rtl'), set 'margin-left' ('margin-right') to zero and solve for
|
|
* 'margin-right' ('margin-left').
|
|
\*-----------------------------------------------------------------------*/
|
|
int leftValue = 0;
|
|
int rightValue = 0;
|
|
|
|
if (marginLeft.isVariable() && marginRight.isVariable()) {
|
|
// 'left' and 'right' cannot be 'auto' due to step 3
|
|
assert(!(left.isVariable() && right.isVariable()));
|
|
|
|
leftValue = left.width(containerWidth);
|
|
rightValue = right.width(containerWidth);
|
|
|
|
int difference = availableSpace - (leftValue + rightValue);
|
|
if (difference > 0) {
|
|
m_marginLeft = difference / 2; // split the diference
|
|
m_marginRight = difference - m_marginLeft; // account for odd valued differences
|
|
} else {
|
|
// see FIXME 1
|
|
if (containerDirection == LTR) {
|
|
m_marginLeft = 0;
|
|
m_marginRight = difference; // will be negative
|
|
} else {
|
|
m_marginLeft = difference; // will be negative
|
|
m_marginRight = 0;
|
|
}
|
|
}
|
|
|
|
/*-----------------------------------------------------------------------*\
|
|
* 5. If at this point there is an 'auto' left, solve the equation for
|
|
* that value.
|
|
\*-----------------------------------------------------------------------*/
|
|
} else if (left.isVariable()) {
|
|
m_marginLeft = marginLeft.width(containerWidth);
|
|
m_marginRight = marginRight.width(containerWidth);
|
|
rightValue = right.width(containerWidth);
|
|
|
|
// Solve for 'left'
|
|
leftValue = availableSpace - (rightValue + m_marginLeft + m_marginRight);
|
|
} else if (right.isVariable()) {
|
|
m_marginLeft = marginLeft.width(containerWidth);
|
|
m_marginRight = marginRight.width(containerWidth);
|
|
leftValue = left.width(containerWidth);
|
|
|
|
// Solve for 'right'
|
|
rightValue = availableSpace - (leftValue + m_marginLeft + m_marginRight);
|
|
} else if (marginLeft.isVariable()) {
|
|
m_marginRight = marginRight.width(containerWidth);
|
|
leftValue = left.width(containerWidth);
|
|
rightValue = right.width(containerWidth);
|
|
|
|
// Solve for 'margin-left'
|
|
m_marginLeft = availableSpace - (leftValue + rightValue + m_marginRight);
|
|
} else if (marginRight.isVariable()) {
|
|
m_marginLeft = marginLeft.width(containerWidth);
|
|
leftValue = left.width(containerWidth);
|
|
rightValue = right.width(containerWidth);
|
|
|
|
// Solve for 'margin-right'
|
|
m_marginRight = availableSpace - (leftValue + rightValue + m_marginLeft);
|
|
}
|
|
|
|
/*-----------------------------------------------------------------------*\
|
|
* 6. If at this point the values are over-constrained, ignore the value
|
|
* for either 'left' (in case the 'direction' property of the
|
|
* containing block is 'rtl') or 'right' (in case 'direction' is
|
|
* 'ltr') and solve for that value.
|
|
\*-----------------------------------------------------------------------*/
|
|
else {
|
|
m_marginLeft = marginLeft.width(containerWidth);
|
|
m_marginRight = marginRight.width(containerWidth);
|
|
if (containerDirection == LTR) {
|
|
leftValue = left.width(containerWidth);
|
|
rightValue = availableSpace - (leftValue + m_marginLeft + m_marginRight);
|
|
}
|
|
else {
|
|
rightValue = right.width(containerWidth);
|
|
leftValue = availableSpace - (rightValue + m_marginLeft + m_marginRight);
|
|
}
|
|
}
|
|
|
|
int totalWidth = m_width + leftValue + rightValue + m_marginLeft + m_marginRight;
|
|
if (totalWidth > containerWidth && (containerDirection == RTL))
|
|
leftValue = containerWidth - (totalWidth - leftValue);
|
|
|
|
// Use computed values to calculate the horizontal position.
|
|
m_x = leftValue + m_marginLeft + containerBlock->borderLeft();
|
|
}
|
|
|
|
void RenderBox::calcAbsoluteVerticalReplaced()
|
|
{
|
|
// The following is based off of the W3C Working Draft from April 11, 2006 of
|
|
// CSS 2.1: Section 10.6.5 "Absolutly positioned, replaced elements"
|
|
// <http://www.w3.org/TR/2005/WD-CSS21-20050613/visudet.html#abs-replaced-height>
|
|
// (block-style-comments in this function correspond to text from the spec and
|
|
// the numbers correspond to numbers in spec)
|
|
|
|
// We don't use containingBlock(), since we may be positioned by an enclosing relpositioned inline.
|
|
const RenderObject* containerBlock = container();
|
|
const int containerHeight = containerBlock->height() - containerBlock->borderTop() - containerBlock->borderBottom();
|
|
|
|
// Variables to solve.
|
|
Length top = style()->top();
|
|
Length bottom = style()->bottom();
|
|
Length marginTop = style()->marginTop();
|
|
Length marginBottom = style()->marginBottom();
|
|
|
|
|
|
/*-----------------------------------------------------------------------*\
|
|
* 1. The used value of 'height' is determined as for inline replaced
|
|
* elements.
|
|
\*-----------------------------------------------------------------------*/
|
|
// NOTE: This value of height is FINAL in that the min/max height calculations
|
|
// are dealt with in calcReplacedHeight(). This means that the steps to produce
|
|
// correct max/min in the non-replaced version, are not necessary.
|
|
m_height = calcReplacedHeight() + borderTop() + borderBottom() + paddingTop() + paddingBottom();
|
|
const int availableSpace = containerHeight - m_height;
|
|
|
|
/*-----------------------------------------------------------------------*\
|
|
* 2. If both 'top' and 'bottom' have the value 'auto', replace 'top'
|
|
* with the element's static position.
|
|
\*-----------------------------------------------------------------------*/
|
|
if (top.isVariable() && bottom.isVariable()) {
|
|
// m_staticY should already have been set through layout of the parent().
|
|
int staticTop = m_staticY - containerBlock->borderTop();
|
|
for (RenderObject* po = parent(); po && po != containerBlock; po = po->parent()) {
|
|
staticTop += po->yPos();
|
|
}
|
|
top.setValue(Fixed, staticTop);
|
|
}
|
|
|
|
/*-----------------------------------------------------------------------*\
|
|
* 3. If 'bottom' is 'auto', replace any 'auto' on 'margin-top' or
|
|
* 'margin-bottom' with '0'.
|
|
\*-----------------------------------------------------------------------*/
|
|
// FIXME: The spec. says that this step should only be taken when bottom is
|
|
// auto, but if only top is auto, this makes step 4 impossible.
|
|
if (top.isVariable() || bottom.isVariable()) {
|
|
if (marginTop.isVariable())
|
|
marginTop.setValue(Fixed, 0);
|
|
if (marginBottom.isVariable())
|
|
marginBottom.setValue(Fixed, 0);
|
|
}
|
|
|
|
/*-----------------------------------------------------------------------*\
|
|
* 4. If at this point both 'margin-top' and 'margin-bottom' are still
|
|
* 'auto', solve the equation under the extra constraint that the two
|
|
* margins must get equal values.
|
|
\*-----------------------------------------------------------------------*/
|
|
int topValue = 0;
|
|
int bottomValue = 0;
|
|
|
|
if (marginTop.isVariable() && marginBottom.isVariable()) {
|
|
// 'top' and 'bottom' cannot be 'auto' due to step 2 and 3 combinded.
|
|
assert(!(top.isVariable() || bottom.isVariable()));
|
|
|
|
topValue = top.width(containerHeight);
|
|
bottomValue = bottom.width(containerHeight);
|
|
|
|
int difference = availableSpace - (topValue + bottomValue);
|
|
// NOTE: This may result in negative values.
|
|
m_marginTop = difference / 2; // split the difference
|
|
m_marginBottom = difference - m_marginTop; // account for odd valued differences
|
|
|
|
/*-----------------------------------------------------------------------*\
|
|
* 5. If at this point there is only one 'auto' left, solve the equation
|
|
* for that value.
|
|
\*-----------------------------------------------------------------------*/
|
|
} else if (top.isVariable()) {
|
|
m_marginTop = marginTop.width(containerHeight);
|
|
m_marginBottom = marginBottom.width(containerHeight);
|
|
bottomValue = bottom.width(containerHeight);
|
|
|
|
// Solve for 'top'
|
|
topValue = availableSpace - (bottomValue + m_marginTop + m_marginBottom);
|
|
} else if (bottom.isVariable()) {
|
|
m_marginTop = marginTop.width(containerHeight);
|
|
m_marginBottom = marginBottom.width(containerHeight);
|
|
topValue = top.width(containerHeight);
|
|
|
|
// Solve for 'bottom'
|
|
// NOTE: It is not necessary to solve for 'bottom' because we don't ever
|
|
// use the value.
|
|
} else if (marginTop.isVariable()) {
|
|
m_marginBottom = marginBottom.width(containerHeight);
|
|
topValue = top.width(containerHeight);
|
|
bottomValue = bottom.width(containerHeight);
|
|
|
|
// Solve for 'margin-top'
|
|
m_marginTop = availableSpace - (topValue + bottomValue + m_marginBottom);
|
|
} else if (marginBottom.isVariable()) {
|
|
m_marginTop = marginTop.width(containerHeight);
|
|
topValue = top.width(containerHeight);
|
|
bottomValue = bottom.width(containerHeight);
|
|
|
|
// Solve for 'margin-bottom'
|
|
m_marginBottom = availableSpace - (topValue + bottomValue + m_marginTop);
|
|
}
|
|
|
|
/*-----------------------------------------------------------------------*\
|
|
* 6. If at this point the values are over-constrained, ignore the value
|
|
* for 'bottom' and solve for that value.
|
|
\*-----------------------------------------------------------------------*/
|
|
else {
|
|
m_marginTop = marginTop.width(containerHeight);
|
|
m_marginBottom = marginBottom.width(containerHeight);
|
|
topValue = top.width(containerHeight);
|
|
|
|
// Solve for 'bottom'
|
|
// NOTE: It is not necessary to solve for 'bottom' because we don't ever
|
|
// use the value.
|
|
}
|
|
|
|
// Use computed values to calculate the vertical position.
|
|
m_y = topValue + m_marginTop + containerBlock->borderTop();
|
|
}
|
|
|
|
int RenderBox::highestPosition(bool /*includeOverflowInterior*/, bool includeSelf) const
|
|
{
|
|
return includeSelf ? 0 : m_height;
|
|
}
|
|
|
|
int RenderBox::lowestPosition(bool /*includeOverflowInterior*/, bool includeSelf) const
|
|
{
|
|
return includeSelf ? m_height : 0;
|
|
}
|
|
|
|
int RenderBox::rightmostPosition(bool /*includeOverflowInterior*/, bool includeSelf) const
|
|
{
|
|
return includeSelf ? m_width : 0;
|
|
}
|
|
|
|
int RenderBox::leftmostPosition(bool /*includeOverflowInterior*/, bool includeSelf) const
|
|
{
|
|
return includeSelf ? 0 : m_width;
|
|
}
|
|
|
|
int RenderBox::pageTopAfter(int y) const
|
|
{
|
|
RenderObject* cb = container();
|
|
if (cb)
|
|
return cb->pageTopAfter(y+yPos()) - yPos();
|
|
else
|
|
return 0;
|
|
}
|
|
|
|
int RenderBox::crossesPageBreak(int t, int b) const
|
|
{
|
|
RenderObject* cb = container();
|
|
if (cb)
|
|
return cb->crossesPageBreak(yPos()+t, yPos()+b);
|
|
else
|
|
return false;
|
|
}
|
|
|
|
void RenderBox::caretPos(int /*offset*/, int flags, int &_x, int &_y, int &width, int &height)
|
|
{
|
|
#if 0
|
|
_x = -1;
|
|
|
|
// propagate it downwards to its children, someone will feel responsible
|
|
RenderObject *child = firstChild();
|
|
// if (child) kdDebug(6040) << "delegating caretPos to " << child->renderName() << endl;
|
|
if (child) child->caretPos(offset, override, _x, _y, width, height);
|
|
|
|
// if not, use the extents of this box. offset 0 means left, offset 1 means
|
|
// right
|
|
if (_x == -1) {
|
|
//kdDebug(6040) << "no delegation" << endl;
|
|
_x = xPos() + (offset == 0 ? 0 : m_width);
|
|
_y = yPos();
|
|
height = m_height;
|
|
width = override && offset == 0 ? m_width : 1;
|
|
|
|
// If height of box is smaller than font height, use the latter one,
|
|
// otherwise the caret might become invisible.
|
|
// FIXME: ignoring :first-line, missing good reason to take care of
|
|
int fontHeight = style()->fontMetrics().height();
|
|
if (fontHeight > height)
|
|
height = fontHeight;
|
|
|
|
int absx, absy;
|
|
|
|
RenderObject *cb = containingBlock();
|
|
|
|
if (cb && cb != this && cb->absolutePosition(absx,absy)) {
|
|
//kdDebug(6040) << "absx=" << absx << " absy=" << absy << endl;
|
|
_x += absx;
|
|
_y += absy;
|
|
} else {
|
|
// we don't know our absolute position, and there is no point returning
|
|
// just a relative one
|
|
_x = _y = -1;
|
|
}
|
|
}
|
|
#endif
|
|
|
|
_x = xPos();
|
|
_y = yPos();
|
|
// kdDebug(6040) << "_x " << _x << " _y " << _y << endl;
|
|
width = 1; // no override is indicated in boxes
|
|
|
|
RenderBlock *cb = containingBlock();
|
|
|
|
// Place caret outside the border
|
|
if (flags & CFOutside) {
|
|
|
|
RenderStyle *s = element() && element()->parent()
|
|
&& element()->parent()->renderer()
|
|
? element()->parent()->renderer()->style()
|
|
: cb->style();
|
|
|
|
const TQFontMetrics &fm = s->fontMetrics();
|
|
height = fm.height();
|
|
|
|
bool rtl = s->direction() == RTL;
|
|
bool outsideEnd = flags & CFOutsideEnd;
|
|
|
|
if (outsideEnd) {
|
|
_x += this->width();
|
|
} else {
|
|
_x--;
|
|
}
|
|
|
|
int hl = fm.leading() / 2;
|
|
if (!isReplaced() || style()->display() == BLOCK) {
|
|
if (!outsideEnd ^ rtl)
|
|
_y -= hl;
|
|
else
|
|
_y += kMax(this->height() - fm.ascent() - hl, 0);
|
|
} else {
|
|
_y += baselinePosition(false) - fm.ascent() - hl;
|
|
}
|
|
|
|
// Place caret inside the element
|
|
} else {
|
|
const TQFontMetrics &fm = style()->fontMetrics();
|
|
height = fm.height();
|
|
|
|
RenderStyle *s = style();
|
|
|
|
_x += borderLeft() + paddingLeft();
|
|
_y += borderTop() + paddingTop();
|
|
|
|
// ### regard direction
|
|
switch (s->textAlign()) {
|
|
case LEFT:
|
|
case TDEHTML_LEFT:
|
|
case TAAUTO: // ### find out what this does
|
|
case JUSTIFY:
|
|
break;
|
|
case CENTER:
|
|
case TDEHTML_CENTER:
|
|
_x += contentWidth() / 2;
|
|
break;
|
|
case TDEHTML_RIGHT:
|
|
case RIGHT:
|
|
_x += contentWidth();
|
|
break;
|
|
}
|
|
}
|
|
|
|
int absx, absy;
|
|
if (cb && cb != this && cb->absolutePosition(absx,absy)) {
|
|
// kdDebug(6040) << "absx=" << absx << " absy=" << absy << endl;
|
|
_x += absx;
|
|
_y += absy;
|
|
} else {
|
|
// we don't know our absolute position, and there is no point returning
|
|
// just a relative one
|
|
_x = _y = -1;
|
|
}
|
|
}
|
|
|
|
#undef DEBUG_LAYOUT
|