| /* |
| * Copyright (C) 1999 Lars Knoll (knoll@kde.org) |
| * (C) 2004-2005 Allan Sandfeld Jensen (kde@carewolf.com) |
| * Copyright (C) 2006, 2007 Nicholas Shanks (webkit@nickshanks.com) |
| * Copyright (C) 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013 Apple Inc. |
| * All rights reserved. |
| * Copyright (C) 2007 Alexey Proskuryakov <ap@webkit.org> |
| * Copyright (C) 2007, 2008 Eric Seidel <eric@webkit.org> |
| * Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved. |
| * (http://www.torchmobile.com/) |
| * Copyright (c) 2011, Code Aurora Forum. All rights reserved. |
| * Copyright (C) Research In Motion Limited 2011. All rights reserved. |
| * Copyright (C) 2012 Google 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 "core/css/resolver/TransformBuilder.h" |
| |
| #include "core/css/CSSFunctionValue.h" |
| #include "core/css/CSSPrimitiveValueMappings.h" |
| #include "platform/heap/Handle.h" |
| #include "platform/transforms/Matrix3DTransformOperation.h" |
| #include "platform/transforms/MatrixTransformOperation.h" |
| #include "platform/transforms/PerspectiveTransformOperation.h" |
| #include "platform/transforms/RotateTransformOperation.h" |
| #include "platform/transforms/ScaleTransformOperation.h" |
| #include "platform/transforms/SkewTransformOperation.h" |
| #include "platform/transforms/TransformationMatrix.h" |
| #include "platform/transforms/TranslateTransformOperation.h" |
| |
| namespace blink { |
| |
| static Length convertToFloatLength( |
| const CSSPrimitiveValue& primitiveValue, |
| const CSSToLengthConversionData& conversionData) { |
| return primitiveValue.convertToLength(conversionData); |
| } |
| |
| static TransformOperation::OperationType getTransformOperationType( |
| CSSValueID type) { |
| switch (type) { |
| case CSSValueScale: |
| return TransformOperation::Scale; |
| case CSSValueScaleX: |
| return TransformOperation::ScaleX; |
| case CSSValueScaleY: |
| return TransformOperation::ScaleY; |
| case CSSValueScaleZ: |
| return TransformOperation::ScaleZ; |
| case CSSValueScale3d: |
| return TransformOperation::Scale3D; |
| case CSSValueTranslate: |
| return TransformOperation::Translate; |
| case CSSValueTranslateX: |
| return TransformOperation::TranslateX; |
| case CSSValueTranslateY: |
| return TransformOperation::TranslateY; |
| case CSSValueTranslateZ: |
| return TransformOperation::TranslateZ; |
| case CSSValueTranslate3d: |
| return TransformOperation::Translate3D; |
| case CSSValueRotate: |
| return TransformOperation::Rotate; |
| case CSSValueRotateX: |
| return TransformOperation::RotateX; |
| case CSSValueRotateY: |
| return TransformOperation::RotateY; |
| case CSSValueRotateZ: |
| return TransformOperation::RotateZ; |
| case CSSValueRotate3d: |
| return TransformOperation::Rotate3D; |
| case CSSValueSkew: |
| return TransformOperation::Skew; |
| case CSSValueSkewX: |
| return TransformOperation::SkewX; |
| case CSSValueSkewY: |
| return TransformOperation::SkewY; |
| case CSSValueMatrix: |
| return TransformOperation::Matrix; |
| case CSSValueMatrix3d: |
| return TransformOperation::Matrix3D; |
| case CSSValuePerspective: |
| return TransformOperation::Perspective; |
| default: |
| ASSERT_NOT_REACHED(); |
| // FIXME: We shouldn't have a type None since we never create them |
| return TransformOperation::None; |
| } |
| } |
| |
| bool TransformBuilder::hasRelativeLengths(const CSSValueList& valueList) { |
| for (auto& value : valueList) { |
| const CSSFunctionValue* transformValue = toCSSFunctionValue(value.get()); |
| |
| for (const CSSValue* item : *transformValue) { |
| const CSSPrimitiveValue& primitiveValue = toCSSPrimitiveValue(*item); |
| |
| // TODO(hs1217.lee) : to prevent relative unit like calc(10px + 1em). |
| // but when calc() not take parameter of ralative unit like calc(1px +1 |
| // px), |
| // shoud be return false; |
| if (primitiveValue.isCalculated()) { |
| return true; |
| } |
| |
| if (CSSPrimitiveValue::isRelativeUnit( |
| primitiveValue.typeWithCalcResolved())) { |
| return true; |
| } |
| } |
| } |
| return false; |
| } |
| |
| 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(); |
| 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)); |
| 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; |
| } |
| |
| } // namespace blink |
