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/*
Copyright (C) 2004, 2005, 2007 Nikolas Zimmermann <zimmermann@kde.org>
2004, 2005, 2010 Rob Buis <buis@kde.org>
Copyright (C) Research In Motion Limited 2010. All rights reserved.
Based on khtml code by:
Copyright (C) 1999 Antti Koivisto (koivisto@kde.org)
Copyright (C) 1999-2003 Lars Knoll (knoll@kde.org)
Copyright (C) 2002-2003 Dirk Mueller (mueller@kde.org)
Copyright (C) 2002 Apple 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., 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA.
*/
#include "config.h"
#include "SVGRenderStyle.h"
#include "CSSPrimitiveValue.h"
#include "CSSValueList.h"
#include "IntRect.h"
#include "NodeRenderStyle.h"
#include "SVGElement.h"
#include <wtf/NeverDestroyed.h>
namespace WebCore {
static const SVGRenderStyle& defaultSVGStyle()
{
static NeverDestroyed<DataRef<SVGRenderStyle>> style(SVGRenderStyle::createDefaultStyle());
return *style.get();
}
DEFINE_ALLOCATOR_WITH_HEAP_IDENTIFIER(SVGRenderStyle);
Ref<SVGRenderStyle> SVGRenderStyle::createDefaultStyle()
{
return adoptRef(*new SVGRenderStyle(CreateDefault));
}
SVGRenderStyle::SVGRenderStyle()
: m_fillData(defaultSVGStyle().m_fillData)
, m_strokeData(defaultSVGStyle().m_strokeData)
, m_textData(defaultSVGStyle().m_textData)
, m_inheritedResourceData(defaultSVGStyle().m_inheritedResourceData)
, m_stopData(defaultSVGStyle().m_stopData)
, m_miscData(defaultSVGStyle().m_miscData)
, m_layoutData(defaultSVGStyle().m_layoutData)
, m_nonInheritedResourceData(defaultSVGStyle().m_nonInheritedResourceData)
{
setBitDefaults();
}
SVGRenderStyle::SVGRenderStyle(CreateDefaultType)
: m_fillData(StyleFillData::create())
, m_strokeData(StyleStrokeData::create())
, m_textData(StyleTextData::create())
, m_inheritedResourceData(StyleInheritedResourceData::create())
, m_stopData(StyleStopData::create())
, m_miscData(StyleMiscData::create())
, m_layoutData(StyleLayoutData::create())
, m_nonInheritedResourceData(StyleResourceData::create())
{
setBitDefaults();
}
inline SVGRenderStyle::SVGRenderStyle(const SVGRenderStyle& other)
: RefCounted<SVGRenderStyle>()
, m_inheritedFlags(other.m_inheritedFlags)
, m_nonInheritedFlags(other.m_nonInheritedFlags)
, m_fillData(other.m_fillData)
, m_strokeData(other.m_strokeData)
, m_textData(other.m_textData)
, m_inheritedResourceData(other.m_inheritedResourceData)
, m_stopData(other.m_stopData)
, m_miscData(other.m_miscData)
, m_layoutData(other.m_layoutData)
, m_nonInheritedResourceData(other.m_nonInheritedResourceData)
{
}
Ref<SVGRenderStyle> SVGRenderStyle::copy() const
{
return adoptRef(*new SVGRenderStyle(*this));
}
SVGRenderStyle::~SVGRenderStyle() = default;
bool SVGRenderStyle::operator==(const SVGRenderStyle& other) const
{
return m_fillData == other.m_fillData
&& m_strokeData == other.m_strokeData
&& m_textData == other.m_textData
&& m_stopData == other.m_stopData
&& m_miscData == other.m_miscData
&& m_layoutData == other.m_layoutData
&& m_inheritedResourceData == other.m_inheritedResourceData
&& m_nonInheritedResourceData == other.m_nonInheritedResourceData
&& m_inheritedFlags == other.m_inheritedFlags
&& m_nonInheritedFlags == other.m_nonInheritedFlags;
}
bool SVGRenderStyle::inheritedEqual(const SVGRenderStyle& other) const
{
return m_fillData == other.m_fillData
&& m_strokeData == other.m_strokeData
&& m_textData == other.m_textData
&& m_inheritedResourceData == other.m_inheritedResourceData
&& m_inheritedFlags == other.m_inheritedFlags;
}
void SVGRenderStyle::inheritFrom(const SVGRenderStyle& other)
{
m_fillData = other.m_fillData;
m_strokeData = other.m_strokeData;
m_textData = other.m_textData;
m_inheritedResourceData = other.m_inheritedResourceData;
m_inheritedFlags = other.m_inheritedFlags;
}
void SVGRenderStyle::copyNonInheritedFrom(const SVGRenderStyle& other)
{
m_nonInheritedFlags = other.m_nonInheritedFlags;
m_stopData = other.m_stopData;
m_miscData = other.m_miscData;
m_layoutData = other.m_layoutData;
m_nonInheritedResourceData = other.m_nonInheritedResourceData;
}
StyleDifference SVGRenderStyle::diff(const SVGRenderStyle& other) const
{
// NOTE: All comparisions that may return StyleDifference::Layout have to go before those who return StyleDifference::Repaint
// If kerning changes, we need a relayout, to force SVGCharacterData to be recalculated in the SVGRootInlineBox.
if (m_textData != other.m_textData)
return StyleDifference::Layout;
// If resources change, we need a relayout, as the presence of resources influences the repaint rect.
if (m_nonInheritedResourceData != other.m_nonInheritedResourceData)
return StyleDifference::Layout;
// If markers change, we need a relayout, as marker boundaries are cached in RenderSVGPath.
if (m_inheritedResourceData != other.m_inheritedResourceData)
return StyleDifference::Layout;
// All text related properties influence layout.
if (m_inheritedFlags.textAnchor != other.m_inheritedFlags.textAnchor
|| m_inheritedFlags.glyphOrientationHorizontal != other.m_inheritedFlags.glyphOrientationHorizontal
|| m_inheritedFlags.glyphOrientationVertical != other.m_inheritedFlags.glyphOrientationVertical
|| m_nonInheritedFlags.flagBits.alignmentBaseline != other.m_nonInheritedFlags.flagBits.alignmentBaseline
|| m_nonInheritedFlags.flagBits.dominantBaseline != other.m_nonInheritedFlags.flagBits.dominantBaseline
|| m_nonInheritedFlags.flagBits.baselineShift != other.m_nonInheritedFlags.flagBits.baselineShift)
return StyleDifference::Layout;
// Text related properties influence layout.
bool miscNotEqual = m_miscData != other.m_miscData;
if (miscNotEqual && m_miscData->baselineShiftValue != other.m_miscData->baselineShiftValue)
return StyleDifference::Layout;
// The x or y properties require relayout.
if (m_layoutData != other.m_layoutData)
return StyleDifference::Layout;
// Some stroke properties, requires relayouts, as the cached stroke boundaries need to be recalculated.
if (m_strokeData != other.m_strokeData) {
if (m_strokeData->paintType != other.m_strokeData->paintType
|| m_strokeData->paintColor != other.m_strokeData->paintColor
|| m_strokeData->paintUri != other.m_strokeData->paintUri
|| m_strokeData->dashArray != other.m_strokeData->dashArray
|| m_strokeData->dashOffset != other.m_strokeData->dashOffset
|| m_strokeData->visitedLinkPaintColor != other.m_strokeData->visitedLinkPaintColor
|| m_strokeData->visitedLinkPaintUri != other.m_strokeData->visitedLinkPaintUri
|| m_strokeData->visitedLinkPaintType != other.m_strokeData->visitedLinkPaintType)
return StyleDifference::Layout;
// Only the stroke-opacity case remains, where we only need a repaint.
ASSERT(m_strokeData->opacity != other.m_strokeData->opacity);
return StyleDifference::Repaint;
}
// vector-effect changes require a re-layout.
if (m_nonInheritedFlags.flagBits.vectorEffect != other.m_nonInheritedFlags.flagBits.vectorEffect)
return StyleDifference::Layout;
// NOTE: All comparisions below may only return StyleDifference::Repaint
// Painting related properties only need repaints.
if (miscNotEqual) {
if (m_miscData->floodColor != other.m_miscData->floodColor
|| m_miscData->floodOpacity != other.m_miscData->floodOpacity
|| m_miscData->lightingColor != other.m_miscData->lightingColor)
return StyleDifference::Repaint;
}
// If fill data changes, we just need to repaint. Fill boundaries are not influenced by this, only by the Path, that RenderSVGPath contains.
if (m_fillData->paintType != other.m_fillData->paintType || m_fillData->paintColor != other.m_fillData->paintColor
|| m_fillData->paintUri != other.m_fillData->paintUri || m_fillData->opacity != other.m_fillData->opacity)
return StyleDifference::Repaint;
// If gradient stops change, we just need to repaint. Style updates are already handled through RenderSVGGradientSTop.
if (m_stopData != other.m_stopData)
return StyleDifference::Repaint;
// Changes of these flags only cause repaints.
if (m_inheritedFlags.shapeRendering != other.m_inheritedFlags.shapeRendering
|| m_inheritedFlags.clipRule != other.m_inheritedFlags.clipRule
|| m_inheritedFlags.fillRule != other.m_inheritedFlags.fillRule
|| m_inheritedFlags.colorInterpolation != other.m_inheritedFlags.colorInterpolation
|| m_inheritedFlags.colorInterpolationFilters != other.m_inheritedFlags.colorInterpolationFilters)
return StyleDifference::Repaint;
if (m_nonInheritedFlags.flagBits.bufferedRendering != other.m_nonInheritedFlags.flagBits.bufferedRendering)
return StyleDifference::Repaint;
if (m_nonInheritedFlags.flagBits.maskType != other.m_nonInheritedFlags.flagBits.maskType)
return StyleDifference::Repaint;
return StyleDifference::Equal;
}
}