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 "WebKitCSSMatrix.h"
28
29 #include "CSSParser.h"
30 #include "CSSStyleSelector.h"
31 #include "CSSMutableStyleDeclaration.h"
32 #include "CSSPropertyNames.h"
33 #include "ExceptionCode.h"
34 #include "RenderStyle.h"
35 #include <wtf/MathExtras.h>
36
37 namespace WebCore {
38
WebKitCSSMatrix()39 WebKitCSSMatrix::WebKitCSSMatrix()
40 : StyleBase(0)
41 {
42 }
43
WebKitCSSMatrix(const WebKitCSSMatrix & m)44 WebKitCSSMatrix::WebKitCSSMatrix(const WebKitCSSMatrix& m)
45 : StyleBase(0)
46 , m_matrix(m.m_matrix)
47 {
48 }
49
WebKitCSSMatrix(const TransformationMatrix & m)50 WebKitCSSMatrix::WebKitCSSMatrix(const TransformationMatrix& m)
51 : StyleBase(0)
52 , m_matrix(m)
53 {
54 }
55
WebKitCSSMatrix(const String & s,ExceptionCode & ec)56 WebKitCSSMatrix::WebKitCSSMatrix(const String& s, ExceptionCode& ec)
57 : StyleBase(0)
58 {
59 setMatrixValue(s, ec);
60 }
61
~WebKitCSSMatrix()62 WebKitCSSMatrix::~WebKitCSSMatrix()
63 {
64 }
65
setMatrixValue(const String & string,ExceptionCode & ec)66 void WebKitCSSMatrix::setMatrixValue(const String& string, ExceptionCode& ec)
67 {
68 CSSParser p(useStrictParsing());
69 RefPtr<CSSMutableStyleDeclaration> styleDeclaration = CSSMutableStyleDeclaration::create();
70 if (p.parseValue(styleDeclaration.get(), CSSPropertyWebkitTransform, string, true)) {
71 // Convert to TransformOperations. This can fail if a property
72 // requires style (i.e., param uses 'ems' or 'exs')
73 PassRefPtr<CSSValue> val = styleDeclaration->getPropertyCSSValue(CSSPropertyWebkitTransform);
74 TransformOperations operations;
75 if (!CSSStyleSelector::createTransformOperations(val.get(), 0, 0, operations)) {
76 ec = SYNTAX_ERR;
77 return;
78 }
79
80 // Convert transform operations to a TransformationMatrix. This can fail
81 // if a param has a percentage ('%')
82 TransformationMatrix t;
83 for (unsigned i = 0; i < operations.operations().size(); ++i) {
84 if (operations.operations()[i].get()->apply(t, IntSize(0, 0))) {
85 ec = SYNTAX_ERR;
86 return;
87 }
88 }
89
90 // set the matrix
91 m_matrix = t;
92 } else if (!string.isEmpty()) // There is something there but parsing failed
93 ec = SYNTAX_ERR;
94 }
95
96 // This is a multRight (this = this * secondMatrix)
multiply(WebKitCSSMatrix * secondMatrix) const97 PassRefPtr<WebKitCSSMatrix> WebKitCSSMatrix::multiply(WebKitCSSMatrix* secondMatrix) const
98 {
99 if (!secondMatrix)
100 return 0;
101
102 TransformationMatrix tmp(m_matrix);
103 tmp.multiply(secondMatrix->m_matrix);
104 return WebKitCSSMatrix::create(tmp);
105 }
106
inverse(ExceptionCode & ec) const107 PassRefPtr<WebKitCSSMatrix> WebKitCSSMatrix::inverse(ExceptionCode& ec) const
108 {
109 if (!m_matrix.isInvertible()) {
110 ec = NOT_SUPPORTED_ERR;
111 return 0;
112 }
113
114 return WebKitCSSMatrix::create(m_matrix.inverse());
115 }
116
translate(double x,double y,double z) const117 PassRefPtr<WebKitCSSMatrix> WebKitCSSMatrix::translate(double x, double y, double z) const
118 {
119 if (isnan(x))
120 x = 0;
121 if (isnan(y))
122 y = 0;
123 if (isnan(z))
124 z = 0;
125 return WebKitCSSMatrix::create(TransformationMatrix(m_matrix).translate3d(x, y, z));
126 }
127
scale(double scaleX,double scaleY,double scaleZ) const128 PassRefPtr<WebKitCSSMatrix> WebKitCSSMatrix::scale(double scaleX, double scaleY, double scaleZ) const
129 {
130 if (isnan(scaleX))
131 scaleX = 1;
132 if (isnan(scaleY))
133 scaleY = scaleX;
134 if (isnan(scaleZ))
135 scaleZ = 1;
136 return WebKitCSSMatrix::create(TransformationMatrix(m_matrix).scale3d(scaleX, scaleY, scaleZ));
137 }
138
rotate(double rotX,double rotY,double rotZ) const139 PassRefPtr<WebKitCSSMatrix> WebKitCSSMatrix::rotate(double rotX, double rotY, double rotZ) const
140 {
141 if (isnan(rotX))
142 rotX = 0;
143
144 if (isnan(rotY) && isnan(rotZ)) {
145 rotZ = rotX;
146 rotX = 0;
147 rotY = 0;
148 }
149
150 if (isnan(rotY))
151 rotY = 0;
152 if (isnan(rotZ))
153 rotZ = 0;
154 return WebKitCSSMatrix::create(TransformationMatrix(m_matrix).rotate3d(rotX, rotY, rotZ));
155 }
156
rotateAxisAngle(double x,double y,double z,double angle) const157 PassRefPtr<WebKitCSSMatrix> WebKitCSSMatrix::rotateAxisAngle(double x, double y, double z, double angle) const
158 {
159 if (isnan(x))
160 x = 0;
161 if (isnan(y))
162 y = 0;
163 if (isnan(z))
164 z = 0;
165 if (isnan(angle))
166 angle = 0;
167 if (x == 0 && y == 0 && z == 0)
168 z = 1;
169 return WebKitCSSMatrix::create(TransformationMatrix(m_matrix).rotate3d(x, y, z, angle));
170 }
171
172
toString() const173 String WebKitCSSMatrix::toString() const
174 {
175 // FIXME - Need to ensure valid CSS floating point values (https://bugs.webkit.org/show_bug.cgi?id=20674)
176 if (m_matrix.isAffine())
177 return String::format("matrix(%f, %f, %f, %f, %f, %f)",
178 m_matrix.a(), m_matrix.b(), m_matrix.c(), m_matrix.d(), m_matrix.e(), m_matrix.f());
179 return String::format("matrix3d(%f, %f, %f, %f, %f, %f, %f, %f, %f, %f, %f, %f, %f, %f, %f, %f)",
180 m_matrix.m11(), m_matrix.m12(), m_matrix.m13(), m_matrix.m14(),
181 m_matrix.m21(), m_matrix.m22(), m_matrix.m23(), m_matrix.m24(),
182 m_matrix.m31(), m_matrix.m32(), m_matrix.m33(), m_matrix.m34(),
183 m_matrix.m41(), m_matrix.m42(), m_matrix.m43(), m_matrix.m44());
184 }
185
186 } // namespace WebCore
187