Length ViewportStyleResolver::viewportLengthValue(CSSPropertyID id) const
{
ASSERT(id == CSSPropertyMaxHeight
|| id == CSSPropertyMinHeight
|| id == CSSPropertyMaxWidth
|| id == CSSPropertyMinWidth);
CSSValue* value = m_propertySet->getPropertyCSSValue(id);
if (!value || !value->isPrimitiveValue())
return Length(); // auto
CSSPrimitiveValue* primitiveValue = toCSSPrimitiveValue(value);
if (primitiveValue->getValueID() == CSSValueInternalExtendToZoom)
return Length(ExtendToZoom);
ComputedStyle* documentStyle = m_document->mutableComputedStyle();
// If we have viewport units the conversion will mark the document style as having viewport units.
bool documentStyleHasViewportUnits = documentStyle->hasViewportUnits();
documentStyle->setHasViewportUnits(false);
CSSToLengthConversionData::FontSizes fontSizes(documentStyle, documentStyle);
CSSToLengthConversionData::ViewportSize viewportSize(m_document->layoutView());
if (primitiveValue->getValueID() == CSSValueAuto)
return Length(Auto);
Length result = primitiveValue->convertToLength(CSSToLengthConversionData(documentStyle, fontSizes, viewportSize, 1.0f));
if (documentStyle->hasViewportUnits())
m_document->setHasViewportUnits();
documentStyle->setHasViewportUnits(documentStyleHasViewportUnits);
return result;
}
void StyleBuilderFunctions::applyValueCSSPropertyVerticalAlign(StyleResolverState& state, CSSValue* value)
{
CSSPrimitiveValue* primitiveValue = toCSSPrimitiveValue(value);
if (primitiveValue->getValueID())
state.style()->setVerticalAlign(*primitiveValue);
else
state.style()->setVerticalAlignLength(primitiveValue->convertToLength(state.cssToLengthConversionData()));
}
float SVGLengthContext::resolveValue(const CSSPrimitiveValue& primitiveValue,
SVGLengthMode mode) const {
const ComputedStyle* style = computedStyleForLengthResolving(m_context);
if (!style)
return 0;
const ComputedStyle* rootStyle = rootElementStyle(m_context);
if (!rootStyle)
return 0;
CSSToLengthConversionData conversionData = CSSToLengthConversionData(
style, rootStyle, m_context->document().layoutViewItem(), 1.0f);
Length length = primitiveValue.convertToLength(conversionData);
return valueForLength(length, 1.0f, mode);
}
void CSSToStyleMap::mapFillYPosition(StyleResolverState& state, FillLayer* layer, CSSValue* value)
{
if (value->isInitialValue()) {
layer->setYPosition(FillLayer::initialFillYPosition(layer->type()));
return;
}
if (!value->isPrimitiveValue())
return;
CSSPrimitiveValue* primitiveValue = toCSSPrimitiveValue(value);
Pair* pair = primitiveValue->getPairValue();
if (pair)
primitiveValue = pair->second();
Length length = primitiveValue->convertToLength(state.cssToLengthConversionData());
layer->setYPosition(length);
if (pair)
layer->setBackgroundYOrigin(*(pair->first()));
}
void StyleBuilderFunctions::applyValueCSSPropertyTextIndent(StyleResolverState& state, CSSValue* value)
{
Length lengthOrPercentageValue;
TextIndentLine textIndentLineValue = ComputedStyle::initialTextIndentLine();
TextIndentType textIndentTypeValue = ComputedStyle::initialTextIndentType();
for (auto& listValue : toCSSValueList(*value)) {
CSSPrimitiveValue* primitiveValue = toCSSPrimitiveValue(listValue.get());
if (!primitiveValue->getValueID())
lengthOrPercentageValue = primitiveValue->convertToLength(state.cssToLengthConversionData());
else if (primitiveValue->getValueID() == CSSValueEachLine)
textIndentLineValue = TextIndentEachLine;
else if (primitiveValue->getValueID() == CSSValueHanging)
textIndentTypeValue = TextIndentHanging;
else
ASSERT_NOT_REACHED();
}
state.style()->setTextIndent(lengthOrPercentageValue);
state.style()->setTextIndentLine(textIndentLineValue);
state.style()->setTextIndentType(textIndentTypeValue);
}
static Length convertToFloatLength(
const CSSPrimitiveValue& primitiveValue,
const CSSToLengthConversionData& conversionData) {
return primitiveValue.convertToLength(conversionData);
}
FilterOperations FilterOperationResolver::createFilterOperations(StyleResolverState& state, const CSSValue& inValue)
{
FilterOperations operations;
if (inValue.isPrimitiveValue()) {
ASSERT(toCSSPrimitiveValue(inValue).getValueID() == CSSValueNone);
return operations;
}
const CSSToLengthConversionData& conversionData = state.cssToLengthConversionData();
for (auto& currValue : toCSSValueList(inValue)) {
CSSFunctionValue* filterValue = toCSSFunctionValue(currValue.get());
FilterOperation::OperationType operationType = filterOperationForType(filterValue->functionType());
countFilterUse(operationType, state.document());
ASSERT(filterValue->length() <= 1);
if (operationType == FilterOperation::REFERENCE) {
CSSSVGDocumentValue* svgDocumentValue = toCSSSVGDocumentValue(filterValue->item(0));
KURL url = state.document().completeURL(svgDocumentValue->url());
RawPtr<ReferenceFilterOperation> operation = ReferenceFilterOperation::create(svgDocumentValue->url(), AtomicString(url.fragmentIdentifier()));
if (SVGURIReference::isExternalURIReference(svgDocumentValue->url(), state.document())) {
if (!svgDocumentValue->loadRequested())
state.elementStyleResources().addPendingSVGDocument(operation.get(), svgDocumentValue);
else if (svgDocumentValue->cachedSVGDocument())
ReferenceFilterBuilder::setDocumentResourceReference(operation.get(), adoptPtr(new DocumentResourceReference(svgDocumentValue->cachedSVGDocument())));
}
operations.operations().append(operation);
continue;
}
CSSPrimitiveValue* firstValue = filterValue->length() && filterValue->item(0)->isPrimitiveValue() ? toCSSPrimitiveValue(filterValue->item(0)) : nullptr;
switch (filterValue->functionType()) {
case CSSValueGrayscale:
case CSSValueSepia:
case CSSValueSaturate: {
double amount = 1;
if (filterValue->length() == 1) {
amount = firstValue->getDoubleValue();
if (firstValue->isPercentage())
amount /= 100;
}
operations.operations().append(BasicColorMatrixFilterOperation::create(amount, operationType));
break;
}
case CSSValueHueRotate: {
double angle = 0;
if (filterValue->length() == 1)
angle = firstValue->computeDegrees();
operations.operations().append(BasicColorMatrixFilterOperation::create(angle, operationType));
break;
}
case CSSValueInvert:
case CSSValueBrightness:
case CSSValueContrast:
case CSSValueOpacity: {
double amount = (filterValue->functionType() == CSSValueBrightness) ? 0 : 1;
if (filterValue->length() == 1) {
amount = firstValue->getDoubleValue();
if (firstValue->isPercentage())
amount /= 100;
}
operations.operations().append(BasicComponentTransferFilterOperation::create(amount, operationType));
break;
}
case CSSValueBlur: {
Length stdDeviation = Length(0, Fixed);
if (filterValue->length() >= 1)
stdDeviation = firstValue->convertToLength(conversionData);
operations.operations().append(BlurFilterOperation::create(stdDeviation));
break;
}
case CSSValueDropShadow: {
CSSShadowValue* item = toCSSShadowValue(filterValue->item(0));
IntPoint location(item->x->computeLength<int>(conversionData), item->y->computeLength<int>(conversionData));
int blur = item->blur ? item->blur->computeLength<int>(conversionData) : 0;
Color shadowColor = Color::black;
if (item->color)
shadowColor = state.document().textLinkColors().colorFromCSSValue(*item->color, state.style()->color());
operations.operations().append(DropShadowFilterOperation::create(location, blur, shadowColor));
break;
}
default:
ASSERT_NOT_REACHED();
break;
}
}
return operations;
}