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