bool ShadowStyleInterpolation::usesDefaultStyleInterpolation(const CSSValue& start, const CSSValue& end)
{
if (start.isValueList() && end.isValueList() && toCSSValueList(start).length() == toCSSValueList(end).length()) {
const CSSValueList* startList = toCSSValueList(&start);
const CSSValueList* endList = toCSSValueList(&end);
for (size_t i = 0; i < toCSSValueList(start).length(); i++) {
if (startList->item(i)->isShadowValue() && endList->item(i)->isShadowValue()
&& toCSSShadowValue(startList->item(i))->style != toCSSShadowValue(endList->item(i))->style)
return true;
}
}
return false;
}
bool DeferredLegacyStyleInterpolation::interpolationRequiresStyleResolve(const CSSValue& value)
{
// FIXME: should not require resolving styles for inherit/initial/unset.
if (value.isCSSWideKeyword())
return true;
if (value.isBasicShapeCircleValue())
return interpolationRequiresStyleResolve(toCSSBasicShapeCircleValue(value));
if (value.isBasicShapeEllipseValue())
return interpolationRequiresStyleResolve(toCSSBasicShapeEllipseValue(value));
if (value.isBasicShapePolygonValue())
return interpolationRequiresStyleResolve(toCSSBasicShapePolygonValue(value));
if (value.isBasicShapeInsetValue())
return interpolationRequiresStyleResolve(toCSSBasicShapeInsetValue(value));
if (value.isPrimitiveValue())
return interpolationRequiresStyleResolve(toCSSPrimitiveValue(value));
if (value.isQuadValue())
return interpolationRequiresStyleResolve(toCSSQuadValue(value));
if (value.isValueList())
return interpolationRequiresStyleResolve(toCSSValueList(value));
if (value.isValuePair())
return interpolationRequiresStyleResolve(toCSSValuePair(value));
if (value.isImageValue())
return interpolationRequiresStyleResolve(toCSSImageValue(value));
if (value.isShadowValue())
return interpolationRequiresStyleResolve(toCSSShadowValue(value));
if (value.isSVGDocumentValue())
return interpolationRequiresStyleResolve(toCSSSVGDocumentValue(value));
// FIXME: consider other custom types.
return true;
}
CSSValueList* CSSVariablesDeclaration::getParsedVariable(const String& variableName)
{
CSSValue* result = m_variablesMap.get(variableName).get();
if (result->isValueList())
return static_cast<CSSValueList*>(result);
return 0;
}
FontFace* FontFace::create(Document* document, const StyleRuleFontFace* fontFaceRule)
{
const StylePropertySet& properties = fontFaceRule->properties();
// Obtain the font-family property and the src property. Both must be defined.
CSSValue* family = properties.getPropertyCSSValue(CSSPropertyFontFamily);
if (!family || (!family->isFontFamilyValue() && !family->isPrimitiveValue()))
return nullptr;
CSSValue* src = properties.getPropertyCSSValue(CSSPropertySrc);
if (!src || !src->isValueList())
return nullptr;
FontFace* fontFace = new FontFace(document);
if (fontFace->setFamilyValue(*family)
&& fontFace->setPropertyFromStyle(properties, CSSPropertyFontStyle)
&& fontFace->setPropertyFromStyle(properties, CSSPropertyFontWeight)
&& fontFace->setPropertyFromStyle(properties, CSSPropertyFontStretch)
&& fontFace->setPropertyFromStyle(properties, CSSPropertyUnicodeRange)
&& fontFace->setPropertyFromStyle(properties, CSSPropertyFontVariant)
&& fontFace->setPropertyFromStyle(properties, CSSPropertyFontFeatureSettings)
&& fontFace->setPropertyFromStyle(properties, CSSPropertyFontDisplay)
&& !fontFace->family().isEmpty()
&& fontFace->traits().bitfield()) {
fontFace->initCSSFontFace(document, src);
return fontFace;
}
return nullptr;
}
InterpolationValue CSSTransformInterpolationType::maybeConvertValue(
const CSSValue& value,
const StyleResolverState& state,
ConversionCheckers& conversionCheckers) const {
if (value.isValueList()) {
CSSLengthArray lengthArray;
for (const CSSValue* item : toCSSValueList(value)) {
const CSSFunctionValue& transformFunction = toCSSFunctionValue(*item);
if (transformFunction.functionType() == CSSValueMatrix ||
transformFunction.functionType() == CSSValueMatrix3d) {
lengthArray.typeFlags.set(CSSPrimitiveValue::UnitTypePixels);
continue;
}
for (const CSSValue* argument : transformFunction) {
const CSSPrimitiveValue& primitiveValue =
toCSSPrimitiveValue(*argument);
if (!primitiveValue.isLength())
continue;
primitiveValue.accumulateLengthArray(lengthArray);
}
}
std::unique_ptr<InterpolationType::ConversionChecker> lengthUnitsChecker =
LengthUnitsChecker::maybeCreate(std::move(lengthArray), state);
if (lengthUnitsChecker)
conversionCheckers.append(std::move(lengthUnitsChecker));
}
TransformOperations transform;
TransformBuilder::createTransformOperations(
value, state.cssToLengthConversionData(), transform);
return convertTransform(std::move(transform));
}
void CSSToStyleMap::mapNinePieceImage(StyleResolverState& state, CSSPropertyID property, CSSValue* value, NinePieceImage& image)
{
// If we're not a value list, then we are "none" and don't need to alter the empty image at all.
if (!value || !value->isValueList())
return;
// Retrieve the border image value.
CSSValueList* borderImage = toCSSValueList(value);
// Set the image (this kicks off the load).
CSSPropertyID imageProperty;
if (property == CSSPropertyWebkitBorderImage)
imageProperty = CSSPropertyBorderImageSource;
else if (property == CSSPropertyWebkitMaskBoxImage)
imageProperty = CSSPropertyWebkitMaskBoxImageSource;
else
imageProperty = property;
for (unsigned i = 0 ; i < borderImage->length() ; ++i) {
CSSValue* current = borderImage->item(i);
if (current->isImageValue() || current->isImageGeneratorValue() || current->isImageSetValue())
image.setImage(state.styleImage(imageProperty, current));
else if (current->isBorderImageSliceValue())
mapNinePieceImageSlice(state, current, image);
else if (current->isValueList()) {
CSSValueList* slashList = toCSSValueList(current);
size_t length = slashList->length();
// Map in the image slices.
if (length && slashList->item(0)->isBorderImageSliceValue())
mapNinePieceImageSlice(state, slashList->item(0), image);
// Map in the border slices.
if (length > 1)
image.setBorderSlices(mapNinePieceImageQuad(state, slashList->item(1)));
// Map in the outset.
if (length > 2)
image.setOutset(mapNinePieceImageQuad(state, slashList->item(2)));
} else if (current->isPrimitiveValue()) {
// Set the appropriate rules for stretch/round/repeat of the slices.
mapNinePieceImageRepeat(state, current, image);
}
}
if (property == CSSPropertyWebkitBorderImage) {
// We have to preserve the legacy behavior of -webkit-border-image and make the border slices
// also set the border widths. We don't need to worry about percentages, since we don't even support
// those on real borders yet.
if (image.borderSlices().top().isLength() && image.borderSlices().top().length().isFixed())
state.style()->setBorderTopWidth(image.borderSlices().top().length().value());
if (image.borderSlices().right().isLength() && image.borderSlices().right().length().isFixed())
state.style()->setBorderRightWidth(image.borderSlices().right().length().value());
if (image.borderSlices().bottom().isLength() && image.borderSlices().bottom().length().isFixed())
state.style()->setBorderBottomWidth(image.borderSlices().bottom().length().value());
if (image.borderSlices().left().isLength() && image.borderSlices().left().length().isFixed())
state.style()->setBorderLeftWidth(image.borderSlices().left().length().value());
}
}
FontFace* FontFace::create(ExecutionContext* context, const AtomicString& family, const String& source, const FontFaceDescriptors& descriptors)
{
FontFace* fontFace = new FontFace(context, family, descriptors);
CSSValue* src = parseCSSValue(toDocument(context), source, CSSPropertySrc);
if (!src || !src->isValueList())
fontFace->setError(DOMException::create(SyntaxError, "The source provided ('" + source + "') could not be parsed as a value list."));
fontFace->initCSSFontFace(toDocument(context), src);
return fontFace;
}
PassRefPtr<FilterStyleInterpolation::FilterListStyleInterpolation> FilterStyleInterpolation::maybeCreateList(const CSSValue& start, const CSSValue& end, CSSPropertyID property)
{
if (start.isCSSWideKeyword() || end.isCSSWideKeyword())
return nullptr;
ASSERT(start.isValueList() || toCSSPrimitiveValue(start).getValueID() == CSSValueNone);
ASSERT(end.isValueList() || toCSSPrimitiveValue(end).getValueID() == CSSValueNone);
if (!start.isValueList() && !end.isValueList())
return nullptr;
return maybeCreateFromList(
start.isValueList() ? toCSSValueList(start) : *CSSValueList::createSpaceSeparated(),
end.isValueList() ? toCSSValueList(end) : *CSSValueList::createSpaceSeparated(),
property);
}
static bool computationallyIndependent(const CSSValue& value) {
DCHECK(!value.isCSSWideKeyword());
if (value.isVariableReferenceValue())
return !toCSSVariableReferenceValue(value)
.variableDataValue()
->needsVariableResolution();
if (value.isValueList()) {
for (const CSSValue* innerValue : toCSSValueList(value)) {
if (!computationallyIndependent(*innerValue))
return false;
}
return true;
}
if (value.isPrimitiveValue()) {
const CSSPrimitiveValue& primitiveValue = toCSSPrimitiveValue(value);
if (!primitiveValue.isLength() &&
!primitiveValue.isCalculatedPercentageWithLength())
return true;
CSSPrimitiveValue::CSSLengthArray lengthArray;
primitiveValue.accumulateLengthArray(lengthArray);
for (size_t i = 0; i < lengthArray.values.size(); i++) {
if (lengthArray.typeFlags.get(i) &&
i != CSSPrimitiveValue::UnitTypePixels &&
i != CSSPrimitiveValue::UnitTypePercentage)
return false;
}
return true;
}
// TODO(timloh): Images and transform-function values can also contain
// lengths.
return true;
}
void RuleFeatureSet::updateInvalidationSetsForContentAttribute(const RuleData& ruleData)
{
const StylePropertySet& propertySet = ruleData.rule()->properties();
int propertyIndex = propertySet.findPropertyIndex(CSSPropertyContent);
if (propertyIndex == -1)
return;
StylePropertySet::PropertyReference contentProperty = propertySet.propertyAt(propertyIndex);
CSSValue* contentValue = contentProperty.value();
if (!contentValue->isValueList())
return;
for (auto& item : toCSSValueList(*contentValue)) {
if (!item->isFunctionValue())
continue;
CSSFunctionValue* functionValue = toCSSFunctionValue(item.get());
if (functionValue->functionType() != CSSValueAttr)
continue;
ensureAttributeInvalidationSet(AtomicString(toCSSPrimitiveValue(functionValue->item(0))->getStringValue())).setInvalidatesSelf();
}
}
TransformOperations TransformBuilder::createTransformOperations(
const CSSValue& inValue,
const CSSToLengthConversionData& conversionData) {
TransformOperations operations;
if (!inValue.isValueList()) {
DCHECK_EQ(toCSSIdentifierValue(inValue).getValueID(), CSSValueNone);
return operations;
}
float zoomFactor = conversionData.zoom();
for (auto& value : toCSSValueList(inValue)) {
const CSSFunctionValue* transformValue = toCSSFunctionValue(value.get());
TransformOperation::OperationType transformType =
getTransformOperationType(transformValue->functionType());
const CSSPrimitiveValue& firstValue =
toCSSPrimitiveValue(transformValue->item(0));
switch (transformType) {
case TransformOperation::Scale:
case TransformOperation::ScaleX:
case TransformOperation::ScaleY: {
double sx = 1.0;
double sy = 1.0;
if (transformType == TransformOperation::ScaleY) {
sy = firstValue.getDoubleValue();
} else {
sx = firstValue.getDoubleValue();
if (transformType != TransformOperation::ScaleX) {
if (transformValue->length() > 1) {
const CSSPrimitiveValue& secondValue =
toCSSPrimitiveValue(transformValue->item(1));
sy = secondValue.getDoubleValue();
} else {
sy = sx;
}
}
}
operations.operations().append(
ScaleTransformOperation::create(sx, sy, 1.0, transformType));
break;
}
case TransformOperation::ScaleZ:
case TransformOperation::Scale3D: {
double sx = 1.0;
double sy = 1.0;
double sz = 1.0;
if (transformType == TransformOperation::ScaleZ) {
sz = firstValue.getDoubleValue();
} else {
sx = firstValue.getDoubleValue();
sy = toCSSPrimitiveValue(transformValue->item(1)).getDoubleValue();
sz = toCSSPrimitiveValue(transformValue->item(2)).getDoubleValue();
}
operations.operations().append(
ScaleTransformOperation::create(sx, sy, sz, transformType));
break;
}
case TransformOperation::Translate:
case TransformOperation::TranslateX:
case TransformOperation::TranslateY: {
Length tx = Length(0, Fixed);
Length ty = Length(0, Fixed);
if (transformType == TransformOperation::TranslateY)
ty = convertToFloatLength(firstValue, conversionData);
else {
tx = convertToFloatLength(firstValue, conversionData);
if (transformType != TransformOperation::TranslateX) {
if (transformValue->length() > 1) {
const CSSPrimitiveValue& secondValue =
toCSSPrimitiveValue(transformValue->item(1));
ty = convertToFloatLength(secondValue, conversionData);
}
}
}
operations.operations().append(
TranslateTransformOperation::create(tx, ty, 0, transformType));
break;
}
case TransformOperation::TranslateZ:
case TransformOperation::Translate3D: {
Length tx = Length(0, Fixed);
Length ty = Length(0, Fixed);
double tz = 0;
if (transformType == TransformOperation::TranslateZ) {
tz = firstValue.computeLength<double>(conversionData);
} else {
tx = convertToFloatLength(firstValue, conversionData);
ty = convertToFloatLength(
toCSSPrimitiveValue(transformValue->item(1)), conversionData);
tz = toCSSPrimitiveValue(transformValue->item(2))
.computeLength<double>(conversionData);
}
operations.operations().append(
TranslateTransformOperation::create(tx, ty, tz, transformType));
break;
}
case TransformOperation::RotateX:
case TransformOperation::RotateY:
case TransformOperation::RotateZ: {
double angle = firstValue.computeDegrees();
if (transformValue->length() == 1) {
double x = transformType == TransformOperation::RotateX;
double y = transformType == TransformOperation::RotateY;
double z = transformType == TransformOperation::RotateZ;
operations.operations().append(
RotateTransformOperation::create(x, y, z, angle, transformType));
} else {
// For SVG 'transform' attributes we generate 3-argument rotate()
// functions.
DCHECK_EQ(transformValue->length(), 3u);
const CSSPrimitiveValue& secondValue =
toCSSPrimitiveValue(transformValue->item(1));
const CSSPrimitiveValue& thirdValue =
toCSSPrimitiveValue(transformValue->item(2));
operations.operations().append(
RotateAroundOriginTransformOperation::create(
angle, secondValue.computeLength<double>(conversionData),
thirdValue.computeLength<double>(conversionData)));
}
break;
}
case TransformOperation::Rotate3D: {
const CSSPrimitiveValue& secondValue =
toCSSPrimitiveValue(transformValue->item(1));
const CSSPrimitiveValue& thirdValue =
toCSSPrimitiveValue(transformValue->item(2));
const CSSPrimitiveValue& fourthValue =
toCSSPrimitiveValue(transformValue->item(3));
double x = firstValue.getDoubleValue();
double y = secondValue.getDoubleValue();
double z = thirdValue.getDoubleValue();
double angle = fourthValue.computeDegrees();
operations.operations().append(
RotateTransformOperation::create(x, y, z, angle, transformType));
break;
}
case TransformOperation::Skew:
case TransformOperation::SkewX:
case TransformOperation::SkewY: {
double angleX = 0;
double angleY = 0;
double angle = firstValue.computeDegrees();
if (transformType == TransformOperation::SkewY)
angleY = angle;
else {
angleX = angle;
if (transformType == TransformOperation::Skew) {
if (transformValue->length() > 1) {
const CSSPrimitiveValue& secondValue =
toCSSPrimitiveValue(transformValue->item(1));
angleY = secondValue.computeDegrees();
}
}
}
operations.operations().append(
SkewTransformOperation::create(angleX, angleY, transformType));
break;
}
case TransformOperation::Matrix: {
double a = firstValue.getDoubleValue();
double b =
toCSSPrimitiveValue(transformValue->item(1)).getDoubleValue();
double c =
toCSSPrimitiveValue(transformValue->item(2)).getDoubleValue();
double d =
toCSSPrimitiveValue(transformValue->item(3)).getDoubleValue();
double e =
zoomFactor *
toCSSPrimitiveValue(transformValue->item(4)).getDoubleValue();
double f =
zoomFactor *
toCSSPrimitiveValue(transformValue->item(5)).getDoubleValue();
operations.operations().append(
MatrixTransformOperation::create(a, b, c, d, e, f));
break;
}
case TransformOperation::Matrix3D: {
TransformationMatrix matrix(
toCSSPrimitiveValue(transformValue->item(0)).getDoubleValue(),
toCSSPrimitiveValue(transformValue->item(1)).getDoubleValue(),
toCSSPrimitiveValue(transformValue->item(2)).getDoubleValue(),
toCSSPrimitiveValue(transformValue->item(3)).getDoubleValue(),
toCSSPrimitiveValue(transformValue->item(4)).getDoubleValue(),
toCSSPrimitiveValue(transformValue->item(5)).getDoubleValue(),
toCSSPrimitiveValue(transformValue->item(6)).getDoubleValue(),
toCSSPrimitiveValue(transformValue->item(7)).getDoubleValue(),
toCSSPrimitiveValue(transformValue->item(8)).getDoubleValue(),
toCSSPrimitiveValue(transformValue->item(9)).getDoubleValue(),
toCSSPrimitiveValue(transformValue->item(10)).getDoubleValue(),
toCSSPrimitiveValue(transformValue->item(11)).getDoubleValue(),
toCSSPrimitiveValue(transformValue->item(12)).getDoubleValue(),
toCSSPrimitiveValue(transformValue->item(13)).getDoubleValue(),
toCSSPrimitiveValue(transformValue->item(14)).getDoubleValue(),
toCSSPrimitiveValue(transformValue->item(15)).getDoubleValue());
matrix.zoom(zoomFactor);
operations.operations().append(
Matrix3DTransformOperation::create(matrix));
break;
}
case TransformOperation::Perspective: {
double p = firstValue.computeLength<double>(conversionData);
ASSERT(p >= 0);
operations.operations().append(
PerspectiveTransformOperation::create(p));
break;
}
default:
ASSERT_NOT_REACHED();
break;
}
}
return operations;
}
static PassRefPtr<CustomFilterOperation> createCustomFilterOperationWithInlineSyntax(CSSFilterValue* filterValue, StyleResolverState& state)
{
CSSValue* shadersValue = filterValue->itemWithoutBoundsCheck(0);
ASSERT_WITH_SECURITY_IMPLICATION(shadersValue->isValueList());
CSSValueList* shadersList = toCSSValueList(shadersValue);
unsigned shadersListLength = shadersList->length();
ASSERT(shadersListLength);
CSSShaderValue* vertexShader = 0;
CSSShaderValue* fragmentShader = 0;
if (shadersList->itemWithoutBoundsCheck(0)->isShaderValue())
vertexShader = toCSSShaderValue(shadersList->itemWithoutBoundsCheck(0));
CustomFilterProgramType programType = ProgramTypeBlendsElementTexture;
CustomFilterProgramMixSettings mixSettings;
if (shadersListLength > 1) {
CSSValue* fragmentShaderOrMixFunction = shadersList->itemWithoutBoundsCheck(1);
if (fragmentShaderOrMixFunction->isMixFunctionValue()) {
CSSMixFunctionValue* mixFunction = toCSSMixFunctionValue(fragmentShaderOrMixFunction);
CSSValueListIterator iterator(mixFunction);
ASSERT(mixFunction->length());
if (iterator.value()->isShaderValue())
fragmentShader = toCSSShaderValue(iterator.value());
iterator.advance();
ASSERT(mixFunction->length() <= 3);
while (iterator.hasMore()) {
CSSPrimitiveValue* primitiveValue = toCSSPrimitiveValue(iterator.value());
if (CSSParser::isBlendMode(primitiveValue->getValueID()))
mixSettings.blendMode = *primitiveValue;
else if (CSSParser::isCompositeOperator(primitiveValue->getValueID()))
mixSettings.compositeOperator = *primitiveValue;
else
ASSERT_NOT_REACHED();
iterator.advance();
}
} else {
programType = ProgramTypeNoElementTexture;
if (fragmentShaderOrMixFunction->isShaderValue())
fragmentShader = toCSSShaderValue(fragmentShaderOrMixFunction);
}
}
if (!vertexShader && !fragmentShader)
return 0;
unsigned meshRows = 1;
unsigned meshColumns = 1;
CustomFilterMeshType meshType = MeshTypeAttached;
CSSValue* parametersValue = 0;
if (filterValue->length() > 1) {
CSSValueListIterator iterator(filterValue->itemWithoutBoundsCheck(1));
// The second value might be the mesh box or the list of parameters:
// If it starts with a number or any of the mesh-box identifiers it is
// the mesh-box list, if not it means it is the parameters list.
if (iterator.hasMore() && iterator.isPrimitiveValue()) {
CSSPrimitiveValue* primitiveValue = toCSSPrimitiveValue(iterator.value());
if (primitiveValue->isNumber()) {
// If only one integer value is specified, it will set both
// the rows and the columns.
meshColumns = meshRows = primitiveValue->getIntValue();
iterator.advance();
// Try to match another number for the rows.
if (iterator.hasMore() && iterator.isPrimitiveValue()) {
CSSPrimitiveValue* primitiveValue = toCSSPrimitiveValue(iterator.value());
if (primitiveValue->isNumber()) {
meshRows = primitiveValue->getIntValue();
iterator.advance();
}
}
}
}
if (iterator.hasMore() && iterator.isPrimitiveValue()) {
CSSPrimitiveValue* primitiveValue = toCSSPrimitiveValue(iterator.value());
if (primitiveValue->getValueID() == CSSValueDetached) {
meshType = MeshTypeDetached;
iterator.advance();
}
}
if (!iterator.index()) {
// If no value was consumed from the mesh value, then it is just a parameter list, meaning that we end up
// having just two CSSListValues: list of shaders and list of parameters.
ASSERT(filterValue->length() == 2);
parametersValue = filterValue->itemWithoutBoundsCheck(1);
}
}
if (filterValue->length() > 2 && !parametersValue)
parametersValue = filterValue->itemWithoutBoundsCheck(2);
CustomFilterParameterList parameterList;
if (parametersValue && !parseCustomFilterParameterList(parametersValue, parameterList, state))
return 0;
RefPtr<CustomFilterProgram> program = createCustomFilterProgram(vertexShader, fragmentShader, programType, mixSettings, meshType, state);
return CustomFilterOperation::create(program.release(), parameterList, meshRows, meshColumns, meshType);
}
