| /* |
| * Copyright (C) 2021 Apple Inc. All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * |
| * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' |
| * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, |
| * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS |
| * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF |
| * THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #include "config.h" |
| #include "CSSCalcPrimitiveValueNode.h" |
| |
| #include "CSSCalcCategoryMapping.h" |
| #include "CSSPrimitiveValue.h" |
| #include "CSSPrimitiveValueMappings.h" |
| #include "CalcExpressionLength.h" |
| #include "CalcExpressionNumber.h" |
| #include "Logging.h" |
| #include <wtf/text/TextStream.h> |
| |
| namespace WebCore { |
| |
| Ref<CSSCalcPrimitiveValueNode> CSSCalcPrimitiveValueNode::create(Ref<CSSPrimitiveValue>&& value) |
| { |
| return adoptRef(*new CSSCalcPrimitiveValueNode(WTFMove(value))); |
| } |
| |
| RefPtr<CSSCalcPrimitiveValueNode> CSSCalcPrimitiveValueNode::create(double value, CSSUnitType type) |
| { |
| if (!std::isfinite(value)) |
| return nullptr; |
| return adoptRef(new CSSCalcPrimitiveValueNode(CSSPrimitiveValue::create(value, type))); |
| } |
| |
| String CSSCalcPrimitiveValueNode::customCSSText() const |
| { |
| return m_value->cssText(); |
| } |
| |
| CSSUnitType CSSCalcPrimitiveValueNode::primitiveType() const |
| { |
| return m_value->primitiveType(); |
| } |
| |
| CSSCalcPrimitiveValueNode::CSSCalcPrimitiveValueNode(Ref<CSSPrimitiveValue>&& value) |
| : CSSCalcExpressionNode(calcUnitCategory(value->primitiveType())) |
| , m_value(WTFMove(value)) |
| { |
| } |
| |
| // FIXME: Use calcUnitCategory? |
| bool CSSCalcPrimitiveValueNode::isNumericValue() const |
| { |
| return m_value->isLength() || m_value->isNumber() || m_value->isPercentage() || m_value->isAngle() |
| || m_value->isTime() || m_value->isResolution() || m_value->isFlex() || m_value->isFrequency(); |
| } |
| |
| bool CSSCalcPrimitiveValueNode::isNegative() const |
| { |
| return isNumericValue() && m_value->doubleValue() < 0.0; |
| } |
| |
| void CSSCalcPrimitiveValueNode::negate() |
| { |
| ASSERT(isNumericValue()); |
| m_value = CSSPrimitiveValue::create(0.0 - m_value->doubleValue(), m_value->primitiveType()); |
| } |
| |
| void CSSCalcPrimitiveValueNode::invert() |
| { |
| ASSERT(isNumericValue()); |
| if (!m_value->doubleValue()) { |
| m_value = CSSPrimitiveValue::create(std::numeric_limits<double>::infinity(), m_value->primitiveType()); |
| return; |
| } |
| |
| m_value = CSSPrimitiveValue::create(1.0 / m_value->doubleValue(), m_value->primitiveType()); |
| } |
| |
| void CSSCalcPrimitiveValueNode::add(const CSSCalcPrimitiveValueNode& node, UnitConversion unitConversion) |
| { |
| auto valueType = m_value->primitiveType(); |
| |
| switch (unitConversion) { |
| case UnitConversion::Invalid: |
| ASSERT_NOT_REACHED(); |
| break; |
| case UnitConversion::Preserve: |
| ASSERT(node.primitiveType() == valueType); |
| m_value = CSSPrimitiveValue::create(m_value->doubleValue() + node.doubleValue(valueType), valueType); |
| break; |
| case UnitConversion::Canonicalize: { |
| auto valueCategory = unitCategory(valueType); |
| // FIXME: It's awkward that canonicalUnitTypeForCategory() has special handling for CSSUnitCategory::Percent. |
| auto canonicalType = valueCategory == CSSUnitCategory::Percent ? CSSUnitType::CSS_PERCENTAGE : canonicalUnitTypeForCategory(valueCategory); |
| ASSERT(canonicalType != CSSUnitType::CSS_UNKNOWN); |
| double leftValue = m_value->doubleValue(canonicalType); |
| double rightValue = node.doubleValue(canonicalType); |
| m_value = CSSPrimitiveValue::create(leftValue + rightValue, canonicalType); |
| break; |
| } |
| } |
| } |
| |
| void CSSCalcPrimitiveValueNode::multiply(double multiplier) |
| { |
| auto valueType = m_value->primitiveType(); |
| ASSERT(hasDoubleValue(valueType)); |
| m_value = CSSPrimitiveValue::create(m_value->doubleValue(valueType) * multiplier, valueType); |
| } |
| |
| void CSSCalcPrimitiveValueNode::convertToUnitType(CSSUnitType unitType) |
| { |
| ASSERT(unitCategory(unitType) == unitCategory(m_value->primitiveType())); |
| double newValue = m_value->doubleValue(unitType); |
| m_value = CSSPrimitiveValue::create(newValue, unitType); |
| } |
| |
| void CSSCalcPrimitiveValueNode::canonicalizeUnit() |
| { |
| auto category = calculationCategoryForCombination(m_value->primitiveType()); |
| if (category == CalculationCategory::Other) |
| return; |
| |
| auto canonicalType = canonicalUnitTypeForCalculationCategory(category); |
| if (canonicalType == m_value->primitiveType()) |
| return; |
| |
| double newValue = m_value->doubleValue(canonicalType); |
| m_value = CSSPrimitiveValue::create(newValue, canonicalType); |
| } |
| |
| std::unique_ptr<CalcExpressionNode> CSSCalcPrimitiveValueNode::createCalcExpression(const CSSToLengthConversionData& conversionData) const |
| { |
| switch (category()) { |
| case CalculationCategory::Number: |
| return makeUnique<CalcExpressionNumber>(m_value->floatValue()); |
| case CalculationCategory::Length: |
| return makeUnique<CalcExpressionLength>(Length(m_value->computeLength<float>(conversionData), LengthType::Fixed)); |
| case CalculationCategory::Percent: |
| case CalculationCategory::PercentLength: { |
| return makeUnique<CalcExpressionLength>(m_value->convertToLength<FixedFloatConversion | PercentConversion>(conversionData)); |
| } |
| // Only types that could be part of a Length expression can be converted |
| // to a CalcExpressionNode. CalculationCategory::PercentNumber makes no sense as a Length. |
| case CalculationCategory::PercentNumber: |
| case CalculationCategory::Angle: |
| case CalculationCategory::Time: |
| case CalculationCategory::Frequency: |
| case CalculationCategory::Other: |
| ASSERT_NOT_REACHED(); |
| } |
| ASSERT_NOT_REACHED(); |
| return nullptr; |
| } |
| |
| double CSSCalcPrimitiveValueNode::doubleValue(CSSUnitType unitType) const |
| { |
| if (hasDoubleValue(unitType)) { |
| // FIXME: This should ASSERT(unitCategory(m_value->primitiveType()) == unitCategory(unitType)), but only when all callers are fixed (e.g. webkit.org/b/204826). |
| if (unitCategory(m_value->primitiveType()) != unitCategory(unitType)) { |
| LOG_WITH_STREAM(Calc, stream << "Calling doubleValue() with unit " << unitType << " on a node of unit type " << m_value->primitiveType() << " which is incompatible"); |
| return 0; |
| } |
| |
| return m_value->doubleValue(unitType); |
| } |
| ASSERT_NOT_REACHED(); |
| return 0; |
| } |
| |
| double CSSCalcPrimitiveValueNode::computeLengthPx(const CSSToLengthConversionData& conversionData) const |
| { |
| switch (category()) { |
| case CalculationCategory::Length: |
| return m_value->computeLength<double>(conversionData); |
| case CalculationCategory::Percent: |
| case CalculationCategory::Number: |
| return m_value->doubleValue(); |
| case CalculationCategory::PercentLength: |
| case CalculationCategory::PercentNumber: |
| case CalculationCategory::Angle: |
| case CalculationCategory::Time: |
| case CalculationCategory::Frequency: |
| case CalculationCategory::Other: |
| ASSERT_NOT_REACHED(); |
| break; |
| } |
| ASSERT_NOT_REACHED(); |
| return 0; |
| } |
| |
| void CSSCalcPrimitiveValueNode::collectDirectComputationalDependencies(HashSet<CSSPropertyID>& values) const |
| { |
| m_value->collectDirectComputationalDependencies(values); |
| } |
| |
| void CSSCalcPrimitiveValueNode::collectDirectRootComputationalDependencies(HashSet<CSSPropertyID>& values) const |
| { |
| m_value->collectDirectRootComputationalDependencies(values); |
| } |
| |
| bool CSSCalcPrimitiveValueNode::isZero() const |
| { |
| return !m_value->doubleValue(); |
| } |
| |
| bool CSSCalcPrimitiveValueNode::equals(const CSSCalcExpressionNode& other) const |
| { |
| if (type() != other.type()) |
| return false; |
| |
| return compareCSSValue(m_value, static_cast<const CSSCalcPrimitiveValueNode&>(other).m_value); |
| } |
| |
| void CSSCalcPrimitiveValueNode::dump(TextStream& ts) const |
| { |
| ts << "value " << m_value->customCSSText() << " (category: " << category() << ", type: " << primitiveType() << ")"; |
| } |
| |
| } |