C++ TransformOperations::operations方法代码示例

void WebKitCSSMatrix::setMatrixValue(const String& string, ExceptionCode& ec)
{
    CSSParser p(useStrictParsing());
    RefPtr<CSSMutableStyleDeclaration> styleDeclaration = CSSMutableStyleDeclaration::create();
    if (p.parseValue(styleDeclaration.get(), CSSPropertyWebkitTransform, string, true)) {
        // Convert to TransformOperations. This can fail if a property
        // requires style (i.e., param uses 'ems' or 'exs')
        PassRefPtr<CSSValue> val =  styleDeclaration->getPropertyCSSValue(CSSPropertyWebkitTransform);
        TransformOperations operations;
        if (!CSSStyleSelector::createTransformOperations(val.get(), 0, operations)) {
            ec = SYNTAX_ERR;
            return;
        }

        // Convert transform operations to a TransformationMatrix. This can fail
        // if a param has a percentage ('%')
        TransformationMatrix t;
        for (unsigned i = 0; i < operations.operations().size(); ++i) {
            if (operations.operations()[i].get()->apply(t, IntSize(0, 0))) {
                ec = SYNTAX_ERR;
                return;
            }
        }

        // set the matrix
        m_matrix = t;
    } else if (!string.isEmpty()) // There is something there but parsing failed
        ec = SYNTAX_ERR;
}

void WebKitCSSMatrix::setMatrixValue(const String& string, ExceptionCode& ec)
{
    RefPtr<CSSMutableStyleDeclaration> styleDeclaration = CSSMutableStyleDeclaration::create();
    if (CSSParser::parseValue(styleDeclaration.get(), CSSPropertyWebkitTransform, string, true, true)) {
        // Convert to TransformOperations. This can fail if a property 
        // requires style (i.e., param uses 'ems' or 'exs')
        RefPtr<CSSValue> value = styleDeclaration->getPropertyCSSValue(CSSPropertyWebkitTransform);

        // Check for a "none" or empty transform. In these cases we can use the default identity matrix.
        if (!value || (value->isPrimitiveValue() && (static_cast<CSSPrimitiveValue*>(value.get()))->getIdent() == CSSValueNone))
            return;

        TransformOperations operations;
        if (!CSSStyleSelector::createTransformOperations(value.get(), 0, 0, operations)) {
            ec = SYNTAX_ERR;
            return;
        }
        
        // Convert transform operations to a TransformationMatrix. This can fail
        // if a param has a percentage ('%')
        TransformationMatrix t;
        for (unsigned i = 0; i < operations.operations().size(); ++i) {
            if (operations.operations()[i].get()->apply(t, IntSize(0, 0))) {
                ec = SYNTAX_ERR;
                return;
            }
        }
        
        // set the matrix
        m_matrix = t;
    } else if (!string.isEmpty()) // There is something there but parsing failed
        ec = SYNTAX_ERR;
}

 Vector<RefPtr<TransformOperation>> concat(const TransformOperations& a,
                                           const TransformOperations& b) {
   Vector<RefPtr<TransformOperation>> result;
   result.reserveCapacity(a.size() + b.size());
   result.appendVector(a.operations());
   result.appendVector(b.operations());
   return result;
 }

bool TransformOperations::operationsMatch(const TransformOperations& other) const
{
    size_t numOperations = operations().size();
    // If the sizes of the function lists don't match, the lists don't match
    if (numOperations != other.operations().size())
        return false;
    
    // If the types of each function are not the same, the lists don't match
    for (size_t i = 0; i < numOperations; ++i) {
        if (!operations()[i]->isSameType(*other.operations()[i]))
            return false;
    }
    return true;
}

PassRefPtr<TransformOperation> InterpolatedTransformOperation::blend(const TransformOperation* from, double progress, bool blendToIdentity)
{
    if (from && !from->isSameType(*this))
        return this;

    TransformOperations thisOperations;
    thisOperations.operations().append(this);
    TransformOperations fromOperations;
    if (blendToIdentity)
        fromOperations.operations().append(IdentityTransformOperation::create());
    else
        fromOperations.operations().append(const_cast<TransformOperation*>(from));
    return InterpolatedTransformOperation::create(thisOperations, fromOperations, progress);
}

TEST(AnimationTranslationUtilTest, transformsWork)
{
    TransformOperations ops;
    WebTransformOperationsMock outOps;

    EXPECT_CALL(outOps, appendTranslate(2, 0, 0));
    EXPECT_CALL(outOps, appendRotate(0.1, 0.2, 0.3, 200000.4));
    EXPECT_CALL(outOps, appendScale(50.2, 100, -4));

    ops.operations().append(TranslateTransformOperation::create(Length(2, Fixed), Length(0, Fixed), TransformOperation::TranslateX));
    ops.operations().append(RotateTransformOperation::create(0.1, 0.2, 0.3, 200000.4, TransformOperation::Rotate3D));
    ops.operations().append(ScaleTransformOperation::create(50.2, 100, -4, TransformOperation::Scale3D));
    toWebTransformOperations(ops, &outOps);
}

ExceptionOr<void> WebKitCSSMatrix::setMatrixValue(const String& string)
{
    if (string.isEmpty())
        return { };

    auto styleDeclaration = MutableStyleProperties::create();
    if (CSSParser::parseValue(styleDeclaration, CSSPropertyTransform, string, true, HTMLStandardMode) == CSSParser::ParseResult::Error)
        return Exception { SYNTAX_ERR };

    // Convert to TransformOperations. This can fail if a property requires style (i.e., param uses 'ems' or 'exs')
    auto value = styleDeclaration->getPropertyCSSValue(CSSPropertyTransform);

    // Check for a "none" or empty transform. In these cases we can use the default identity matrix.
    if (!value || (is<CSSPrimitiveValue>(*value) && downcast<CSSPrimitiveValue>(*value).valueID() == CSSValueNone))
        return { };

    TransformOperations operations;
    if (!transformsForValue(*value, CSSToLengthConversionData(), operations))
        return Exception { SYNTAX_ERR };

    // Convert transform operations to a TransformationMatrix. This can fail if a parameter has a percentage ('%').
    TransformationMatrix matrix;
    for (auto& operation : operations.operations()) {
        if (operation->apply(matrix, IntSize(0, 0)))
            return Exception { SYNTAX_ERR };
    }
    m_matrix = matrix;
    return { };
}

TEST_F(AnimationCompositorAnimationsTest, isNotCandidateForCompositorAnimationTransformDependsOnBoxSize)
{
    TransformOperations ops;
    ops.operations().append(TranslateTransformOperation::create(Length(2, Fixed), Length(2, Fixed), TransformOperation::TranslateX));
    RefPtr<AnimatableValueKeyframe> goodKeyframe = createReplaceOpKeyframe(CSSPropertyTransform, AnimatableTransform::create(ops).get());
    EXPECT_TRUE(duplicateSingleKeyframeAndTestIsCandidateOnResult(goodKeyframe.get()));

    ops.operations().append(TranslateTransformOperation::create(Length(50, Percent), Length(2, Fixed), TransformOperation::TranslateX));
    RefPtr<AnimatableValueKeyframe> badKeyframe = createReplaceOpKeyframe(CSSPropertyTransform, AnimatableTransform::create(ops).get());
    EXPECT_FALSE(duplicateSingleKeyframeAndTestIsCandidateOnResult(badKeyframe.get()));

    TransformOperations ops2;
    Length calcLength = Length(100, Percent).blend(Length(100, Fixed), 0.5, ValueRangeAll);
    ops2.operations().append(TranslateTransformOperation::create(calcLength, Length(0, Fixed), TransformOperation::TranslateX));
    RefPtr<AnimatableValueKeyframe> badKeyframe2 = createReplaceOpKeyframe(CSSPropertyTransform, AnimatableTransform::create(ops2).get());
    EXPECT_FALSE(duplicateSingleKeyframeAndTestIsCandidateOnResult(badKeyframe2.get()));
}

  PassRefPtr<CSSTransformNonInterpolableValue> composite(
      const CSSTransformNonInterpolableValue& other,
      double otherProgress) {
    DCHECK(!isAdditive());
    if (other.m_isSingle) {
      DCHECK_EQ(otherProgress, 0);
      DCHECK(other.isAdditive());
      TransformOperations result;
      result.operations() = concat(transform(), other.transform());
      return create(std::move(result));
    }

    DCHECK(other.m_isStartAdditive || other.m_isEndAdditive);
    TransformOperations start;
    start.operations() = other.m_isStartAdditive
                             ? concat(transform(), other.m_start)
                             : other.m_start.operations();
    TransformOperations end;
    end.operations() = other.m_isEndAdditive ? concat(transform(), other.m_end)
                                             : other.m_end.operations();
    return create(end.blend(start, otherProgress));
  }

TransformOperations TransformOperations::blendByMatchingOperations(const TransformOperations& from, const double& progress) const
{
    TransformOperations result;

    unsigned fromSize = from.operations().size();
    unsigned toSize = operations().size();
    unsigned size = max(fromSize, toSize);
    for (unsigned i = 0; i < size; i++) {
        RefPtr<TransformOperation> fromOperation = (i < fromSize) ? from.operations()[i].get() : 0;
        RefPtr<TransformOperation> toOperation = (i < toSize) ? operations()[i].get() : 0;
        RefPtr<TransformOperation> blendedOperation = toOperation ? toOperation->blend(fromOperation.get(), progress) : (fromOperation ? fromOperation->blend(0, progress, true) : 0);
        if (blendedOperation)
            result.operations().append(blendedOperation);
        else {
            RefPtr<TransformOperation> identityOperation = IdentityTransformOperation::create();
            if (progress > 0.5)
                result.operations().append(toOperation ? toOperation : identityOperation);
            else
                result.operations().append(fromOperation ? fromOperation : identityOperation);
        }
    }

    return result;
}

TransformOperations TransformOperations::blendByUsingMatrixInterpolation(const TransformOperations& from, double progress, const LayoutSize& size) const
{
    TransformOperations result;

    // Convert the TransformOperations into matrices
    TransformationMatrix fromTransform;
    TransformationMatrix toTransform;
    from.apply(size, fromTransform);
    apply(size, toTransform);

    toTransform.blend(fromTransform, progress);

    // Append the result
    result.operations().append(Matrix3DTransformOperation::create(toTransform));

    return result;
}

bool ArgumentCoder<TransformOperations>::decode(ArgumentDecoder* decoder, TransformOperations& transformOperations)
{
    uint32_t operationsSize;
    if (!decoder->decodeUInt32(operationsSize))
        return false;

    for (size_t i = 0; i < operationsSize; ++i) {
        TransformOperation::OperationType operationType;
        if (!decoder->decodeEnum(operationType))
            return false;

        switch (operationType) {
        case TransformOperation::SCALE_X:
        case TransformOperation::SCALE_Y:
        case TransformOperation::SCALE:
        case TransformOperation::SCALE_Z:
        case TransformOperation::SCALE_3D: {
            double x, y, z;
            if (!decoder->decode(x))
                return false;
            if (!decoder->decode(y))
                return false;
            if (!decoder->decode(z))
                return false;
            transformOperations.operations().append(ScaleTransformOperation::create(x, y, z, operationType));
            break;
        }
        case TransformOperation::TRANSLATE_X:
        case TransformOperation::TRANSLATE_Y:
        case TransformOperation::TRANSLATE:
        case TransformOperation::TRANSLATE_Z:
        case TransformOperation::TRANSLATE_3D: {
            Length x, y, z;
            if (!ArgumentCoder<Length>::decode(decoder, x))
                return false;
            if (!ArgumentCoder<Length>::decode(decoder, y))
                return false;
            if (!ArgumentCoder<Length>::decode(decoder, z))
                return false;
            transformOperations.operations().append(TranslateTransformOperation::create(x, y, z, operationType));
            break;
        }
        case TransformOperation::ROTATE:
        case TransformOperation::ROTATE_X:
        case TransformOperation::ROTATE_Y:
        case TransformOperation::ROTATE_3D: {
            double x, y, z, angle;
            if (!decoder->decode(x))
                return false;
            if (!decoder->decode(y))
                return false;
            if (!decoder->decode(z))
                return false;
            if (!decoder->decode(angle))
                return false;
            transformOperations.operations().append(RotateTransformOperation::create(x, y, z, angle, operationType));
            break;
        }
        case TransformOperation::SKEW_X:
        case TransformOperation::SKEW_Y:
        case TransformOperation::SKEW: {
            double angleX, angleY;
            if (!decoder->decode(angleX))
                return false;
            if (!decoder->decode(angleY))
                return false;
            transformOperations.operations().append(SkewTransformOperation::create(angleX, angleY, operationType));
            break;
        }
        case TransformOperation::MATRIX: {
            TransformationMatrix matrix;
            if (!ArgumentCoder<TransformationMatrix>::decode(decoder, matrix))
                return false;
            transformOperations.operations().append(MatrixTransformOperation::create(matrix));
            break;
        }
        case TransformOperation::MATRIX_3D: {
            TransformationMatrix matrix;
            if (!ArgumentCoder<TransformationMatrix>::decode(decoder, matrix))
                return false;
            transformOperations.operations().append(Matrix3DTransformOperation::create(matrix));
            break;
        }
        case TransformOperation::PERSPECTIVE: {
            Length perspective;
            if (!ArgumentCoder<Length>::decode(decoder, perspective))
                return false;
            transformOperations.operations().append(PerspectiveTransformOperation::create(perspective));
            break;
        }
        case TransformOperation::IDENTITY:
            transformOperations.operations().append(IdentityTransformOperation::create());
            break;
        case TransformOperation::NONE:
            ASSERT_NOT_REACHED();
            break;
        }
    }
    return true;
}

bool TransformBuilder::createTransformOperations(CSSValue* inValue, const CSSToLengthConversionData& conversionData, TransformOperations& outOperations)
{
    if (!inValue || !inValue->isValueList()) {
        outOperations.clear();
        return false;
    }

    TransformOperations operations;
    for (CSSValueListIterator i = inValue; i.hasMore(); i.advance()) {
        CSSValue* currValue = i.value();

        if (!currValue->isTransformValue())
            continue;

        CSSTransformValue* transformValue = toCSSTransformValue(i.value());
        if (!transformValue->length())
            continue;

        bool haveNonPrimitiveValue = false;
        for (unsigned j = 0; j < transformValue->length(); ++j) {
            if (!transformValue->item(j)->isPrimitiveValue()) {
                haveNonPrimitiveValue = true;
                break;
            }
        }
        if (haveNonPrimitiveValue)
            continue;

        CSSPrimitiveValue* firstValue = toCSSPrimitiveValue(transformValue->item(0));

        switch (transformValue->operationType()) {
        case CSSTransformValue::ScaleTransformOperation:
        case CSSTransformValue::ScaleXTransformOperation:
        case CSSTransformValue::ScaleYTransformOperation: {
            double sx = 1.0;
            double sy = 1.0;
            if (transformValue->operationType() == CSSTransformValue::ScaleYTransformOperation)
                sy = firstValue->getDoubleValue();
            else {
                sx = firstValue->getDoubleValue();
                if (transformValue->operationType() != CSSTransformValue::ScaleXTransformOperation) {
                    if (transformValue->length() > 1) {
                        CSSPrimitiveValue* secondValue = toCSSPrimitiveValue(transformValue->item(1));
                        sy = secondValue->getDoubleValue();
                    } else
                        sy = sx;
                }
            }
            operations.operations().append(ScaleTransformOperation::create(sx, sy, 1.0, getTransformOperationType(transformValue->operationType())));
            break;
        }
        case CSSTransformValue::ScaleZTransformOperation:
        case CSSTransformValue::Scale3DTransformOperation: {
            double sx = 1.0;
            double sy = 1.0;
            double sz = 1.0;
            if (transformValue->operationType() == CSSTransformValue::ScaleZTransformOperation)
                sz = firstValue->getDoubleValue();
            else if (transformValue->operationType() == CSSTransformValue::ScaleYTransformOperation)
                sy = firstValue->getDoubleValue();
            else {
                sx = firstValue->getDoubleValue();
                if (transformValue->operationType() != CSSTransformValue::ScaleXTransformOperation) {
                    if (transformValue->length() > 2) {
                        CSSPrimitiveValue* thirdValue = toCSSPrimitiveValue(transformValue->item(2));
                        sz = thirdValue->getDoubleValue();
                    }
                    if (transformValue->length() > 1) {
                        CSSPrimitiveValue* secondValue = toCSSPrimitiveValue(transformValue->item(1));
                        sy = secondValue->getDoubleValue();
                    } else
                        sy = sx;
                }
            }
            operations.operations().append(ScaleTransformOperation::create(sx, sy, sz, getTransformOperationType(transformValue->operationType())));
            break;
        }
        case CSSTransformValue::TranslateTransformOperation:
        case CSSTransformValue::TranslateXTransformOperation:
        case CSSTransformValue::TranslateYTransformOperation: {
            Length tx = Length(0, Fixed);
            Length ty = Length(0, Fixed);
            if (transformValue->operationType() == CSSTransformValue::TranslateYTransformOperation)
                ty = convertToFloatLength(firstValue, conversionData);
            else {
                tx = convertToFloatLength(firstValue, conversionData);
                if (transformValue->operationType() != CSSTransformValue::TranslateXTransformOperation) {
                    if (transformValue->length() > 1) {
                        CSSPrimitiveValue* secondValue = toCSSPrimitiveValue(transformValue->item(1));
                        ty = convertToFloatLength(secondValue, conversionData);
                    }
                }
            }

            operations.operations().append(TranslateTransformOperation::create(tx, ty, 0, getTransformOperationType(transformValue->operationType())));
            break;
        }
        case CSSTransformValue::TranslateZTransformOperation:
        case CSSTransformValue::Translate3DTransformOperation: {
            Length tx = Length(0, Fixed);
//.........这里部分代码省略.........

bool TransformBuilder::createTransformOperations(CSSValue* inValue, RenderStyle* style, RenderStyle* rootStyle, TransformOperations& outOperations)
{
    if (!inValue || !inValue->isValueList()) {
        outOperations.clear();
        return false;
    }

    float zoomFactor = style ? style->effectiveZoom() : 1;
    TransformOperations operations;
    for (CSSValueListIterator i = inValue; i.hasMore(); i.advance()) {
        CSSValue* currValue = i.value();

        if (!currValue->isCSSTransformValue())
            continue;

        CSSTransformValue* transformValue = static_cast<CSSTransformValue*>(i.value());
        if (!transformValue->length())
            continue;

        bool haveNonPrimitiveValue = false;
        for (unsigned j = 0; j < transformValue->length(); ++j) {
            if (!transformValue->itemWithoutBoundsCheck(j)->isPrimitiveValue()) {
                haveNonPrimitiveValue = true;
                break;
            }
        }
        if (haveNonPrimitiveValue)
            continue;

        CSSPrimitiveValue* firstValue = toCSSPrimitiveValue(transformValue->itemWithoutBoundsCheck(0));

        switch (transformValue->operationType()) {
        case CSSTransformValue::ScaleTransformOperation:
        case CSSTransformValue::ScaleXTransformOperation:
        case CSSTransformValue::ScaleYTransformOperation: {
            double sx = 1.0;
            double sy = 1.0;
            if (transformValue->operationType() == CSSTransformValue::ScaleYTransformOperation)
                sy = firstValue->getDoubleValue();
            else {
                sx = firstValue->getDoubleValue();
                if (transformValue->operationType() != CSSTransformValue::ScaleXTransformOperation) {
                    if (transformValue->length() > 1) {
                        CSSPrimitiveValue* secondValue = toCSSPrimitiveValue(transformValue->itemWithoutBoundsCheck(1));
                        sy = secondValue->getDoubleValue();
                    } else
                        sy = sx;
                }
            }
            operations.operations().append(ScaleTransformOperation::create(sx, sy, 1.0, getTransformOperationType(transformValue->operationType())));
            break;
        }
        case CSSTransformValue::ScaleZTransformOperation:
        case CSSTransformValue::Scale3DTransformOperation: {
            double sx = 1.0;
            double sy = 1.0;
            double sz = 1.0;
            if (transformValue->operationType() == CSSTransformValue::ScaleZTransformOperation)
                sz = firstValue->getDoubleValue();
            else if (transformValue->operationType() == CSSTransformValue::ScaleYTransformOperation)
                sy = firstValue->getDoubleValue();
            else {
                sx = firstValue->getDoubleValue();
                if (transformValue->operationType() != CSSTransformValue::ScaleXTransformOperation) {
                    if (transformValue->length() > 2) {
                        CSSPrimitiveValue* thirdValue = toCSSPrimitiveValue(transformValue->itemWithoutBoundsCheck(2));
                        sz = thirdValue->getDoubleValue();
                    }
                    if (transformValue->length() > 1) {
                        CSSPrimitiveValue* secondValue = toCSSPrimitiveValue(transformValue->itemWithoutBoundsCheck(1));
                        sy = secondValue->getDoubleValue();
                    } else
                        sy = sx;
                }
            }
            operations.operations().append(ScaleTransformOperation::create(sx, sy, sz, getTransformOperationType(transformValue->operationType())));
            break;
        }
        case CSSTransformValue::TranslateTransformOperation:
        case CSSTransformValue::TranslateXTransformOperation:
        case CSSTransformValue::TranslateYTransformOperation: {
            Length tx = Length(0, Fixed);
            Length ty = Length(0, Fixed);
            if (transformValue->operationType() == CSSTransformValue::TranslateYTransformOperation)
                ty = convertToFloatLength(firstValue, style, rootStyle, zoomFactor);
            else {
                tx = convertToFloatLength(firstValue, style, rootStyle, zoomFactor);
                if (transformValue->operationType() != CSSTransformValue::TranslateXTransformOperation) {
                    if (transformValue->length() > 1) {
                        CSSPrimitiveValue* secondValue = toCSSPrimitiveValue(transformValue->itemWithoutBoundsCheck(1));
                        ty = convertToFloatLength(secondValue, style, rootStyle, zoomFactor);
                    }
                }
            }

            if (tx.isUndefined() || ty.isUndefined())
                return false;

            operations.operations().append(TranslateTransformOperation::create(tx, ty, Length(0, Fixed), getTransformOperationType(transformValue->operationType())));
            break;
//.........这里部分代码省略.........

void ArgumentCoder<TransformOperations>::encode(ArgumentEncoder& encoder, const TransformOperations& transformOperations)
{
    encoder << static_cast<uint32_t>(transformOperations.size());
    for (const auto& operation : transformOperations.operations()) {
        encoder.encodeEnum(operation->type());

        switch (operation->type()) {
        case TransformOperation::SCALE_X:
        case TransformOperation::SCALE_Y:
        case TransformOperation::SCALE:
        case TransformOperation::SCALE_Z:
        case TransformOperation::SCALE_3D: {
            const auto& scaleOperation = downcast<ScaleTransformOperation>(*operation);
            encoder << scaleOperation.x();
            encoder << scaleOperation.y();
            encoder << scaleOperation.z();
            break;
        }
        case TransformOperation::TRANSLATE_X:
        case TransformOperation::TRANSLATE_Y:
        case TransformOperation::TRANSLATE:
        case TransformOperation::TRANSLATE_Z:
        case TransformOperation::TRANSLATE_3D: {
            const auto& translateOperation = downcast<TranslateTransformOperation>(*operation);
            ArgumentCoder<Length>::encode(encoder, translateOperation.x());
            ArgumentCoder<Length>::encode(encoder, translateOperation.y());
            ArgumentCoder<Length>::encode(encoder, translateOperation.z());
            break;
        }
        case TransformOperation::ROTATE:
        case TransformOperation::ROTATE_X:
        case TransformOperation::ROTATE_Y:
        case TransformOperation::ROTATE_3D: {
            const auto& rotateOperation = downcast<RotateTransformOperation>(*operation);
            encoder << rotateOperation.x();
            encoder << rotateOperation.y();
            encoder << rotateOperation.z();
            encoder << rotateOperation.angle();
            break;
        }
        case TransformOperation::SKEW_X:
        case TransformOperation::SKEW_Y:
        case TransformOperation::SKEW: {
            const auto& skewOperation = downcast<SkewTransformOperation>(*operation);
            encoder << skewOperation.angleX();
            encoder << skewOperation.angleY();
            break;
        }
        case TransformOperation::MATRIX:
            ArgumentCoder<TransformationMatrix>::encode(encoder, downcast<MatrixTransformOperation>(*operation).matrix());
            break;
        case TransformOperation::MATRIX_3D:
            ArgumentCoder<TransformationMatrix>::encode(encoder, downcast<Matrix3DTransformOperation>(*operation).matrix());
            break;
        case TransformOperation::PERSPECTIVE:
            ArgumentCoder<Length>::encode(encoder, downcast<PerspectiveTransformOperation>(*operation).perspective());
            break;
        case TransformOperation::IDENTITY:
            break;
        case TransformOperation::NONE:
            ASSERT_NOT_REACHED();
            break;
        }
    }
}