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/*
Copyright (C) 2007 Eric Seidel <eric@webkit.org>
Copyright (C) 2007 Alexey Proskuryakov <ap@webkit.org>
Copyright (C) 2019 Apple Inc. All rights reserved.
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 "CSSComputedStyleDeclaration.h"
#include "CSSPrimitiveValueMappings.h"
#include "CSSPropertyNames.h"
#include "CSSValueList.h"
#include "CSSValuePool.h"
#include "Document.h"
#include "Element.h"
#include "RenderStyle.h"
#include "SVGRenderStyle.h"
#include <wtf/URL.h>
namespace WebCore {
static RefPtr<CSSPrimitiveValue> createCSSValue(GlyphOrientation orientation)
{
switch (orientation) {
case GlyphOrientation::Degrees0:
return CSSPrimitiveValue::create(0.0f, CSSUnitType::CSS_DEG);
case GlyphOrientation::Degrees90:
return CSSPrimitiveValue::create(90.0f, CSSUnitType::CSS_DEG);
case GlyphOrientation::Degrees180:
return CSSPrimitiveValue::create(180.0f, CSSUnitType::CSS_DEG);
case GlyphOrientation::Degrees270:
return CSSPrimitiveValue::create(270.0f, CSSUnitType::CSS_DEG);
case GlyphOrientation::Auto:
return nullptr;
}
RELEASE_ASSERT_NOT_REACHED();
}
static Ref<CSSValue> createCSSValue(const Vector<SVGLengthValue>& dashes)
{
if (dashes.isEmpty())
return CSSPrimitiveValue::create(CSSValueNone);
CSSValueListBuilder list;
for (auto& length : dashes) {
auto primitiveValue = length.toCSSPrimitiveValue();
// Computed lengths should always be in 'px' unit.
if (primitiveValue->isLength() && primitiveValue->primitiveType() != CSSUnitType::CSS_PX)
list.append(CSSPrimitiveValue::create(primitiveValue->resolveAsLengthDeprecated(), CSSUnitType::CSS_PX));
else
list.append(WTFMove(primitiveValue));
}
return CSSValueList::createCommaSeparated(WTFMove(list));
}
Ref<CSSValue> ComputedStyleExtractor::adjustSVGPaint(SVGPaintType paintType, const String& url, Ref<CSSValue> color) const
{
if (paintType >= SVGPaintType::URINone) {
CSSValueListBuilder values;
values.append(CSSPrimitiveValue::createURI(url));
if (paintType == SVGPaintType::URINone)
values.append(CSSPrimitiveValue::create(CSSValueNone));
else if (paintType == SVGPaintType::URICurrentColor || paintType == SVGPaintType::URIRGBColor)
values.append(color);
return CSSValueList::createSpaceSeparated(WTFMove(values));
}
if (paintType == SVGPaintType::None)
return CSSPrimitiveValue::create(CSSValueNone);
return color;
}
static RefPtr<CSSValue> svgMarkerValue(const String& marker, const Element* element)
{
if (marker.isEmpty())
return CSSPrimitiveValue::create(CSSValueNone);
if (URL(marker).isValid() || !element)
return CSSPrimitiveValue::createURI(marker);
auto resolvedURL = URL(element->document().baseURL(), marker);
return CSSPrimitiveValue::createURI(resolvedURL.string());
}
RefPtr<CSSValue> ComputedStyleExtractor::svgPropertyValue(CSSPropertyID propertyID) const
{
if (!m_element)
return nullptr;
auto* style = m_element->computedStyle();
if (!style)
return nullptr;
const SVGRenderStyle& svgStyle = style->svgStyle();
auto createColor = [&style](const Style::Color& color) {
auto resolvedColor = style->colorResolvingCurrentColor(color);
return CSSValuePool::singleton().createColorValue(resolvedColor);
};
switch (propertyID) {
case CSSPropertyClipRule:
return CSSPrimitiveValue::create(toCSSValueID(svgStyle.clipRule()));
case CSSPropertyFloodOpacity:
return CSSPrimitiveValue::create(svgStyle.floodOpacity());
case CSSPropertyStopOpacity:
return CSSPrimitiveValue::create(svgStyle.stopOpacity());
case CSSPropertyColorInterpolation:
return CSSPrimitiveValue::create(toCSSValueID(svgStyle.colorInterpolation()));
case CSSPropertyColorInterpolationFilters:
return CSSPrimitiveValue::create(toCSSValueID(svgStyle.colorInterpolationFilters()));
case CSSPropertyFillOpacity:
return CSSPrimitiveValue::create(svgStyle.fillOpacity());
case CSSPropertyFillRule:
return CSSPrimitiveValue::create(toCSSValueID(svgStyle.fillRule()));
case CSSPropertyShapeRendering:
return CSSPrimitiveValue::create(toCSSValueID(svgStyle.shapeRendering()));
case CSSPropertyStrokeOpacity:
return CSSPrimitiveValue::create(svgStyle.strokeOpacity());
case CSSPropertyAlignmentBaseline:
return CSSPrimitiveValue::create(toCSSValueID(svgStyle.alignmentBaseline()));
case CSSPropertyDominantBaseline:
return CSSPrimitiveValue::create(toCSSValueID(svgStyle.dominantBaseline()));
case CSSPropertyTextAnchor:
return CSSPrimitiveValue::create(toCSSValueID(svgStyle.textAnchor()));
case CSSPropertyFloodColor:
return createColor(svgStyle.floodColor());
case CSSPropertyLightingColor:
return createColor(svgStyle.lightingColor());
case CSSPropertyStopColor:
return createColor(svgStyle.stopColor());
case CSSPropertyFill:
return adjustSVGPaint(svgStyle.fillPaintType(), svgStyle.fillPaintUri(), createColor(svgStyle.fillPaintColor()));
case CSSPropertyMarkerEnd:
return svgMarkerValue(svgStyle.markerEndResource(), m_element.get());
case CSSPropertyMarkerMid:
return svgMarkerValue(svgStyle.markerMidResource(), m_element.get());
case CSSPropertyMarkerStart:
return svgMarkerValue(svgStyle.markerStartResource(), m_element.get());
case CSSPropertyStroke:
return adjustSVGPaint(svgStyle.strokePaintType(), svgStyle.strokePaintUri(), createColor(svgStyle.strokePaintColor()));
case CSSPropertyStrokeDasharray:
return createCSSValue(svgStyle.strokeDashArray());
case CSSPropertyBaselineShift: {
switch (svgStyle.baselineShift()) {
case BaselineShift::Baseline:
return CSSPrimitiveValue::create(CSSValueBaseline);
case BaselineShift::Super:
return CSSPrimitiveValue::create(CSSValueSuper);
case BaselineShift::Sub:
return CSSPrimitiveValue::create(CSSValueSub);
case BaselineShift::Length: {
auto computedValue = svgStyle.baselineShiftValue().toCSSPrimitiveValue(m_element.get());
if (computedValue->isLength() && computedValue->primitiveType() != CSSUnitType::CSS_PX)
return CSSPrimitiveValue::create(computedValue->resolveAsLengthDeprecated(), CSSUnitType::CSS_PX);
return computedValue;
}
}
ASSERT_NOT_REACHED();
return nullptr;
}
case CSSPropertyBufferedRendering:
return CSSPrimitiveValue::create(toCSSValueID(svgStyle.bufferedRendering()));
case CSSPropertyGlyphOrientationHorizontal:
return createCSSValue(svgStyle.glyphOrientationHorizontal());
case CSSPropertyGlyphOrientationVertical: {
if (RefPtr<CSSPrimitiveValue> value = createCSSValue(svgStyle.glyphOrientationVertical()))
return value;
if (svgStyle.glyphOrientationVertical() == GlyphOrientation::Auto)
return CSSPrimitiveValue::create(CSSValueAuto);
return nullptr;
}
case CSSPropertyVectorEffect:
return CSSPrimitiveValue::create(toCSSValueID(svgStyle.vectorEffect()));
case CSSPropertyMaskType:
return CSSPrimitiveValue::create(toCSSValueID(svgStyle.maskType()));
case CSSPropertyMarker:
// this property is not yet implemented in the engine
break;
default:
// If you crash here, it's because you added a css property and are not handling it
// in either this switch statement or the one in CSSComputedStyleDeclaration::getPropertyCSSValue
ASSERT_WITH_MESSAGE(0, "unimplemented propertyID: %d", propertyID);
}
return nullptr;
}
}
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