render_style.cpp

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/*
 * This file is part of the DOM implementation for KDE.
 *
 * Copyright (C) 1999 Antti Koivisto ([e-mail])
 * Copyright (C) 2004 Apple Computer, Inc.
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Library General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Library General Public License for more details.
 *
 * You should have received a copy of the GNU Library General Public License
 * along with this library; see the file COPYING.LIB.  If not, write to
 * the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
 * Boston, MA 02111-1307, USA.
 *
 */

#include "xml/dom_stringimpl.h"

#include "render_style.h"
#include "css/cssstyleselector.h"
#include "render_arena.h"

#include "kdebug.h"

using namespace khtml;

using DOM::DOMStringImpl;
using DOM::DOMString;

StyleSurroundData::StyleSurroundData()
    : margin( Fixed ), padding( Variable )
{
}

StyleSurroundData::StyleSurroundData(const StyleSurroundData& o )
    : Shared<StyleSurroundData>(),
      offset( o.offset ), margin( o.margin ), padding( o.padding ),
      border( o.border )
{
}

bool StyleSurroundData::operator==(const StyleSurroundData& o) const
{
    return offset==o.offset && margin==o.margin &&
	padding==o.padding && border==o.border;
}

StyleBoxData::StyleBoxData()
    : z_index( 0 ), z_auto(true)
{
    // Initialize our min/max widths/heights.
    min_width = min_height = RenderStyle::initialMinSize();
    max_width = max_height = RenderStyle::initialMaxSize();
}

StyleBoxData::StyleBoxData(const StyleBoxData& o )
    : Shared<StyleBoxData>(),
      width( o.width ), height( o.height ),
      min_width( o.min_width ), max_width( o.max_width ),
      min_height ( o.min_height ), max_height( o.max_height ),
      z_index( o.z_index ), z_auto( o.z_auto )
{
}

bool StyleBoxData::operator==(const StyleBoxData& o) const
{
    return
	    width == o.width &&
	    height == o.height &&
	    min_width == o.min_width &&
	    max_width == o.max_width &&
	    min_height == o.min_height &&
	    max_height == o.max_height &&
	    z_index == o.z_index &&
        z_auto == o.z_auto;
}


StyleVisualData::StyleVisualData()
      : hasClip(false), 
      textDecoration(RenderStyle::initialTextDecoration()), 
      colspan( 1 ), counter_increment( 0 ), counter_reset( 0 )
#if !APPLE_CHANGES
      , palette( QApplication::palette() )
#endif
{
}

StyleVisualData::~StyleVisualData() {
}

StyleVisualData::StyleVisualData(const StyleVisualData& o )
    : Shared<StyleVisualData>(),
      clip( o.clip ), hasClip( o.hasClip ), textDecoration(o.textDecoration), colspan( o.colspan ),
      counter_increment( o.counter_increment ), counter_reset( o.counter_reset )
#if !APPLE_CHANGES
      , palette( o.palette )
#endif
{
}

BackgroundLayer::BackgroundLayer()
:m_image(RenderStyle::initialBackgroundImage()),
 m_bgAttachment(RenderStyle::initialBackgroundAttachment()),
 m_bgRepeat(RenderStyle::initialBackgroundRepeat()),
 m_next(0)
{
    m_imageSet = m_attachmentSet = m_repeatSet = m_xPosSet = m_yPosSet = false;     
}

BackgroundLayer::BackgroundLayer(const BackgroundLayer& o)
{
    m_next = o.m_next ? new BackgroundLayer(*o.m_next) : 0;
    m_image = o.m_image;
    m_xPosition = o.m_xPosition;
    m_yPosition = o.m_yPosition;
    m_bgAttachment = o.m_bgAttachment;
    m_bgRepeat = o.m_bgRepeat;
    m_imageSet = o.m_imageSet;
    m_attachmentSet = o.m_attachmentSet;
    m_repeatSet = o.m_repeatSet;
    m_xPosSet = o.m_xPosSet;
    m_yPosSet = o.m_yPosSet;
}

BackgroundLayer::~BackgroundLayer()
{
    delete m_next;
}

BackgroundLayer& BackgroundLayer::operator=(const BackgroundLayer& o) {
    if (m_next != o.m_next) {
        delete m_next;
        m_next = o.m_next ? new BackgroundLayer(*o.m_next) : 0;
    }
    
    m_image = o.m_image;
    m_xPosition = o.m_xPosition;
    m_yPosition = o.m_yPosition;
    m_bgAttachment = o.m_bgAttachment;
    m_bgRepeat = o.m_bgRepeat;
    
    m_imageSet = o.m_imageSet;
    m_attachmentSet = o.m_attachmentSet;
    m_repeatSet = o.m_repeatSet;
    m_xPosSet = o.m_xPosSet;
    m_yPosSet = o.m_yPosSet;
    
    return *this;
}

bool BackgroundLayer::operator==(const BackgroundLayer& o) const {
    return m_image == o.m_image && m_xPosition == o.m_xPosition && m_yPosition == o.m_yPosition &&
           m_bgAttachment == o.m_bgAttachment && m_bgRepeat == o.m_bgRepeat && 
           m_imageSet == o.m_imageSet && m_attachmentSet == o.m_attachmentSet && m_repeatSet == o.m_repeatSet &&
           m_xPosSet == o.m_xPosSet && m_yPosSet == o.m_yPosSet &&
           ((m_next && o.m_next) ? *m_next == *o.m_next : m_next == o.m_next);
}

void BackgroundLayer::fillUnsetProperties()
{
    BackgroundLayer* curr;
    for (curr = this; curr && curr->isBackgroundImageSet(); curr = curr->next());
    if (curr && curr != this) {
        // We need to fill in the remaining values with the pattern specified.
        for (BackgroundLayer* pattern = this; curr; curr = curr->next()) {
            curr->m_image = pattern->m_image;
            pattern = pattern->next();
            if (pattern == curr || !pattern)
                pattern = this;
        }
    }
    
    for (curr = this; curr && curr->isBackgroundXPositionSet(); curr = curr->next());
    if (curr && curr != this) {
        // We need to fill in the remaining values with the pattern specified.
        for (BackgroundLayer* pattern = this; curr; curr = curr->next()) {
            curr->m_xPosition = pattern->m_xPosition;
            pattern = pattern->next();
            if (pattern == curr || !pattern)
                pattern = this;
        }
    }
    
    for (curr = this; curr && curr->isBackgroundYPositionSet(); curr = curr->next());
    if (curr && curr != this) {
        // We need to fill in the remaining values with the pattern specified.
        for (BackgroundLayer* pattern = this; curr; curr = curr->next()) {
            curr->m_yPosition = pattern->m_yPosition;
            pattern = pattern->next();
            if (pattern == curr || !pattern)
                pattern = this;
        }
    }
    
    for (curr = this; curr && curr->isBackgroundAttachmentSet(); curr = curr->next());
    if (curr && curr != this) {
        // We need to fill in the remaining values with the pattern specified.
        for (BackgroundLayer* pattern = this; curr; curr = curr->next()) {
            curr->m_bgAttachment = pattern->m_bgAttachment;
            pattern = pattern->next();
            if (pattern == curr || !pattern)
                pattern = this;
        }
    }
    
    for (curr = this; curr && curr->isBackgroundRepeatSet(); curr = curr->next());
    if (curr && curr != this) {
        // We need to fill in the remaining values with the pattern specified.
        for (BackgroundLayer* pattern = this; curr; curr = curr->next()) {
            curr->m_bgRepeat = pattern->m_bgRepeat;
            pattern = pattern->next();
            if (pattern == curr || !pattern)
                pattern = this;
        }
    }
}

void BackgroundLayer::cullEmptyLayers()
{
    BackgroundLayer *next;
    for (BackgroundLayer *p = this; p; p = next) {
        next = p->m_next;
        if (next && !next->isBackgroundImageSet() &&
            !next->isBackgroundXPositionSet() && !next->isBackgroundYPositionSet() &&
            !next->isBackgroundAttachmentSet() && !next->isBackgroundRepeatSet()) {
            delete next;
            p->m_next = 0;
            break;
        }
    }
}

StyleBackgroundData::StyleBackgroundData()
{}

StyleBackgroundData::StyleBackgroundData(const StyleBackgroundData& o)
    : Shared<StyleBackgroundData>(), m_background(o.m_background), m_outline(o.m_outline)
{}

bool StyleBackgroundData::operator==(const StyleBackgroundData& o) const
{
    return m_background == o.m_background && m_color == o.m_color && m_outline == o.m_outline;
}

StyleMarqueeData::StyleMarqueeData()
{
    increment = RenderStyle::initialMarqueeIncrement();
    speed = RenderStyle::initialMarqueeSpeed();
    direction = RenderStyle::initialMarqueeDirection();
    behavior = RenderStyle::initialMarqueeBehavior();
    loops = RenderStyle::initialMarqueeLoopCount();
}

StyleMarqueeData::StyleMarqueeData(const StyleMarqueeData& o)
:Shared<StyleMarqueeData>(), increment(o.increment), speed(o.speed), loops(o.loops),
 behavior(o.behavior), direction(o.direction) 
{}

bool StyleMarqueeData::operator==(const StyleMarqueeData& o) const
{
    return (increment == o.increment && speed == o.speed && direction == o.direction &&
            behavior == o.behavior && loops == o.loops);
}

StyleFlexibleBoxData::StyleFlexibleBoxData()
: Shared<StyleFlexibleBoxData>()
{
    flex = RenderStyle::initialBoxFlex();
    flex_group = RenderStyle::initialBoxFlexGroup();
    ordinal_group = RenderStyle::initialBoxOrdinalGroup();
    align = RenderStyle::initialBoxAlign();
    pack = RenderStyle::initialBoxPack();
    orient = RenderStyle::initialBoxOrient();
    lines = RenderStyle::initialBoxLines();
}

StyleFlexibleBoxData::StyleFlexibleBoxData(const StyleFlexibleBoxData& o)
: Shared<StyleFlexibleBoxData>()
{
    flex = o.flex;
    flex_group = o.flex_group;
    ordinal_group = o.ordinal_group;
    align = o.align;
    pack = o.pack;
    orient = o.orient;
    lines = o.lines;
}

bool StyleFlexibleBoxData::operator==(const StyleFlexibleBoxData& o) const
{
    return flex == o.flex && flex_group == o.flex_group &&
           ordinal_group == o.ordinal_group && align == o.align &&
           pack == o.pack && orient == o.orient && lines == o.lines;
}

StyleCSS3NonInheritedData::StyleCSS3NonInheritedData()
:Shared<StyleCSS3NonInheritedData>(), 
#if APPLE_CHANGES
lineClamp(RenderStyle::initialLineClamp()),
#endif
opacity(RenderStyle::initialOpacity()),
userDrag(RenderStyle::initialUserDrag()),
userSelect(RenderStyle::initialUserSelect()),
textOverflow(RenderStyle::initialTextOverflow()),
marginTopCollapse(MCOLLAPSE),
marginBottomCollapse(MCOLLAPSE)
#ifndef KHTML_NO_XBL
, bindingURI(0)
#endif
{
}

StyleCSS3NonInheritedData::StyleCSS3NonInheritedData(const StyleCSS3NonInheritedData& o)
:Shared<StyleCSS3NonInheritedData>(), 
#if APPLE_CHANGES
lineClamp(o.lineClamp),
#endif
opacity(o.opacity), flexibleBox(o.flexibleBox), marquee(o.marquee),
userDrag(o.userDrag), userSelect(o.userSelect), textOverflow(o.textOverflow),
marginTopCollapse(o.marginTopCollapse), marginBottomCollapse(o.marginBottomCollapse)
{
#ifndef KHTML_NO_XBL
    bindingURI = o.bindingURI ? o.bindingURI->copy() : 0;
#endif
}

StyleCSS3NonInheritedData::~StyleCSS3NonInheritedData()
{
#ifndef KHTML_NO_XBL
    delete bindingURI;
#endif
}

#ifndef KHTML_NO_XBL
bool StyleCSS3NonInheritedData::bindingsEquivalent(const StyleCSS3NonInheritedData& o) const
{
    if (this == &o) return true;
    if (!bindingURI && o.bindingURI || bindingURI && !o.bindingURI)
        return false;
    if (bindingURI && o.bindingURI && (*bindingURI != *o.bindingURI))
        return false;
    return true;
}
#endif

bool StyleCSS3NonInheritedData::operator==(const StyleCSS3NonInheritedData& o) const
{
    return opacity == o.opacity && flexibleBox == o.flexibleBox && marquee == o.marquee &&
           userDrag == o.userDrag && userSelect == o.userSelect && textOverflow == o.textOverflow &&
           marginTopCollapse == o.marginTopCollapse && marginBottomCollapse == o.marginBottomCollapse
#ifndef KHTML_NO_XBL
           && bindingsEquivalent(o)
#endif
#if APPLE_CHANGES
           && lineClamp == o.lineClamp && m_dashboardRegions == o.m_dashboardRegions
#endif