1/* 2 * Copyright (C) 2008 Apple Inc. All Rights Reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 1. Redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer. 9 * 2. Redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution. 12 * 13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY 14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR 17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY 21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 24 */ 25 26#include "config.h" 27#include "core/css/CSSMatrix.h" 28 29#include "CSSPropertyNames.h" 30#include "CSSValueKeywords.h" 31#include "bindings/v8/ExceptionState.h" 32#include "core/css/CSSParser.h" 33#include "core/css/CSSToLengthConversionData.h" 34#include "core/css/StylePropertySet.h" 35#include "core/css/resolver/TransformBuilder.h" 36#include "core/dom/ExceptionCode.h" 37#include "core/rendering/style/RenderStyle.h" 38#include "core/rendering/style/StyleInheritedData.h" 39#include "wtf/MathExtras.h" 40 41namespace WebCore { 42 43CSSMatrix::CSSMatrix(const TransformationMatrix& m) 44 : m_matrix(m) 45{ 46 ScriptWrappable::init(this); 47} 48 49CSSMatrix::CSSMatrix(const String& s, ExceptionState& exceptionState) 50{ 51 ScriptWrappable::init(this); 52 setMatrixValue(s, exceptionState); 53} 54 55void CSSMatrix::setMatrixValue(const String& string, ExceptionState& exceptionState) 56{ 57 if (string.isEmpty()) 58 return; 59 60 RefPtr<MutableStylePropertySet> styleDeclaration = MutableStylePropertySet::create(); 61 if (CSSParser::parseValue(styleDeclaration.get(), CSSPropertyWebkitTransform, string, true, HTMLStandardMode, 0)) { 62 // Convert to TransformOperations. This can fail if a property 63 // requires style (i.e., param uses 'ems' or 'exs') 64 RefPtr<CSSValue> value = styleDeclaration->getPropertyCSSValue(CSSPropertyWebkitTransform); 65 66 // Check for a "none" or empty transform. In these cases we can use the default identity matrix. 67 if (!value || (value->isPrimitiveValue() && (toCSSPrimitiveValue(value.get()))->getValueID() == CSSValueNone)) 68 return; 69 70 DEFINE_STATIC_REF(RenderStyle, defaultStyle, RenderStyle::createDefaultStyle()); 71 TransformOperations operations; 72 if (!TransformBuilder::createTransformOperations(value.get(), CSSToLengthConversionData(defaultStyle, defaultStyle), operations)) { 73 exceptionState.throwUninformativeAndGenericDOMException(SyntaxError); 74 return; 75 } 76 77 // Convert transform operations to a TransformationMatrix. This can fail 78 // if a param has a percentage ('%') 79 if (operations.dependsOnBoxSize()) 80 exceptionState.throwUninformativeAndGenericDOMException(SyntaxError); 81 TransformationMatrix t; 82 operations.apply(FloatSize(0, 0), t); 83 84 // set the matrix 85 m_matrix = t; 86 } else { // There is something there but parsing failed. 87 exceptionState.throwUninformativeAndGenericDOMException(SyntaxError); 88 } 89} 90 91// Perform a concatenation of the matrices (this * secondMatrix) 92PassRefPtr<CSSMatrix> CSSMatrix::multiply(CSSMatrix* secondMatrix) const 93{ 94 if (!secondMatrix) 95 return 0; 96 97 return CSSMatrix::create(TransformationMatrix(m_matrix).multiply(secondMatrix->m_matrix)); 98} 99 100PassRefPtr<CSSMatrix> CSSMatrix::inverse(ExceptionState& exceptionState) const 101{ 102 if (!m_matrix.isInvertible()) { 103 exceptionState.throwUninformativeAndGenericDOMException(NotSupportedError); 104 return 0; 105 } 106 107 return CSSMatrix::create(m_matrix.inverse()); 108} 109 110PassRefPtr<CSSMatrix> CSSMatrix::translate(double x, double y, double z) const 111{ 112 if (std::isnan(x)) 113 x = 0; 114 if (std::isnan(y)) 115 y = 0; 116 if (std::isnan(z)) 117 z = 0; 118 return CSSMatrix::create(TransformationMatrix(m_matrix).translate3d(x, y, z)); 119} 120 121PassRefPtr<CSSMatrix> CSSMatrix::scale(double scaleX, double scaleY, double scaleZ) const 122{ 123 if (std::isnan(scaleX)) 124 scaleX = 1; 125 if (std::isnan(scaleY)) 126 scaleY = scaleX; 127 if (std::isnan(scaleZ)) 128 scaleZ = 1; 129 return CSSMatrix::create(TransformationMatrix(m_matrix).scale3d(scaleX, scaleY, scaleZ)); 130} 131 132PassRefPtr<CSSMatrix> CSSMatrix::rotate(double rotX, double rotY, double rotZ) const 133{ 134 if (std::isnan(rotX)) 135 rotX = 0; 136 137 if (std::isnan(rotY) && std::isnan(rotZ)) { 138 rotZ = rotX; 139 rotX = 0; 140 rotY = 0; 141 } 142 143 if (std::isnan(rotY)) 144 rotY = 0; 145 if (std::isnan(rotZ)) 146 rotZ = 0; 147 return CSSMatrix::create(TransformationMatrix(m_matrix).rotate3d(rotX, rotY, rotZ)); 148} 149 150PassRefPtr<CSSMatrix> CSSMatrix::rotateAxisAngle(double x, double y, double z, double angle) const 151{ 152 if (std::isnan(x)) 153 x = 0; 154 if (std::isnan(y)) 155 y = 0; 156 if (std::isnan(z)) 157 z = 0; 158 if (std::isnan(angle)) 159 angle = 0; 160 if (!x && !y && !z) 161 z = 1; 162 return CSSMatrix::create(TransformationMatrix(m_matrix).rotate3d(x, y, z, angle)); 163} 164 165PassRefPtr<CSSMatrix> CSSMatrix::skewX(double angle) const 166{ 167 if (std::isnan(angle)) 168 angle = 0; 169 return CSSMatrix::create(TransformationMatrix(m_matrix).skewX(angle)); 170} 171 172PassRefPtr<CSSMatrix> CSSMatrix::skewY(double angle) const 173{ 174 if (std::isnan(angle)) 175 angle = 0; 176 return CSSMatrix::create(TransformationMatrix(m_matrix).skewY(angle)); 177} 178 179String CSSMatrix::toString() const 180{ 181 // FIXME - Need to ensure valid CSS floating point values (https://bugs.webkit.org/show_bug.cgi?id=20674) 182 if (m_matrix.isAffine()) 183 return String::format("matrix(%f, %f, %f, %f, %f, %f)", m_matrix.a(), m_matrix.b(), m_matrix.c(), m_matrix.d(), m_matrix.e(), m_matrix.f()); 184 return String::format("matrix3d(%f, %f, %f, %f, %f, %f, %f, %f, %f, %f, %f, %f, %f, %f, %f, %f)", 185 m_matrix.m11(), m_matrix.m12(), m_matrix.m13(), m_matrix.m14(), 186 m_matrix.m21(), m_matrix.m22(), m_matrix.m23(), m_matrix.m24(), 187 m_matrix.m31(), m_matrix.m32(), m_matrix.m33(), m_matrix.m34(), 188 m_matrix.m41(), m_matrix.m42(), m_matrix.m43(), m_matrix.m44()); 189} 190 191} // namespace WebCore 192