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
28 #include "CSSParser.h"
29 #include "CSSStyleSelector.h"
30 #include "CSSMutableStyleDeclaration.h"
31 #include "CSSPropertyNames.h"
32 #include "ExceptionCode.h"
33 #include "RenderStyle.h"
34 #include "WebKitCSSMatrix.h"
35
36 namespace WebCore {
37
WebKitCSSMatrix()38 WebKitCSSMatrix::WebKitCSSMatrix()
39 : StyleBase(0)
40 {
41 }
42
WebKitCSSMatrix(const WebKitCSSMatrix & m)43 WebKitCSSMatrix::WebKitCSSMatrix(const WebKitCSSMatrix& m)
44 : StyleBase(0)
45 , m_matrix(m.m_matrix)
46 {
47 }
48
WebKitCSSMatrix(const TransformationMatrix & m)49 WebKitCSSMatrix::WebKitCSSMatrix(const TransformationMatrix& m)
50 : StyleBase(0)
51 , m_matrix(m)
52 {
53 }
54
WebKitCSSMatrix(const String & s,ExceptionCode & ec)55 WebKitCSSMatrix::WebKitCSSMatrix(const String& s, ExceptionCode& ec)
56 : StyleBase(0)
57 {
58 setMatrixValue(s, ec);
59 }
60
~WebKitCSSMatrix()61 WebKitCSSMatrix::~WebKitCSSMatrix()
62 {
63 }
64
setMatrixValue(const String & string,ExceptionCode & ec)65 void WebKitCSSMatrix::setMatrixValue(const String& string, ExceptionCode& ec)
66 {
67 CSSParser p(useStrictParsing());
68 RefPtr<CSSMutableStyleDeclaration> styleDeclaration = CSSMutableStyleDeclaration::create();
69 if (p.parseValue(styleDeclaration.get(), CSSPropertyWebkitTransform, string, true)) {
70 // Convert to TransformOperations. This can fail if a property
71 // requires style (i.e., param uses 'ems' or 'exs')
72 PassRefPtr<CSSValue> val = styleDeclaration->getPropertyCSSValue(CSSPropertyWebkitTransform);
73 TransformOperations operations;
74 if (!CSSStyleSelector::createTransformOperations(val.get(), 0, operations)) {
75 ec = SYNTAX_ERR;
76 return;
77 }
78
79 // Convert transform operations to a TransformationMatrix. This can fail
80 // if a param has a percentage ('%')
81 TransformationMatrix t;
82 for (unsigned i = 0; i < operations.operations().size(); ++i) {
83 if (operations.operations()[i].get()->apply(t, IntSize(0, 0))) {
84 ec = SYNTAX_ERR;
85 return;
86 }
87 }
88
89 // set the matrix
90 m_matrix = t;
91 } else if (!string.isEmpty()) // There is something there but parsing failed
92 ec = SYNTAX_ERR;
93 }
94
95 // This is a multRight (this = this * secondMatrix)
multiply(WebKitCSSMatrix * secondMatrix)96 PassRefPtr<WebKitCSSMatrix> WebKitCSSMatrix::multiply(WebKitCSSMatrix* secondMatrix)
97 {
98 TransformationMatrix tmp(m_matrix);
99 tmp.multiply(secondMatrix->m_matrix);
100 return WebKitCSSMatrix::create(tmp);
101 }
102
inverse(ExceptionCode & ec)103 PassRefPtr<WebKitCSSMatrix> WebKitCSSMatrix::inverse(ExceptionCode& ec)
104 {
105 if (!m_matrix.isInvertible()) {
106 ec = NOT_SUPPORTED_ERR;
107 return 0;
108 }
109
110 return WebKitCSSMatrix::create(m_matrix.inverse());
111 }
112
translate(float x,float y)113 PassRefPtr<WebKitCSSMatrix> WebKitCSSMatrix::translate(float x, float y)
114 {
115 if (isnan(x))
116 x = 0;
117 if (isnan(y))
118 y = 0;
119 return WebKitCSSMatrix::create(m_matrix.translate(x, y));
120 }
121
scale(float scaleX,float scaleY)122 PassRefPtr<WebKitCSSMatrix> WebKitCSSMatrix::scale(float scaleX, float scaleY)
123 {
124 if (isnan(scaleX))
125 scaleX = 1;
126 if (isnan(scaleY))
127 scaleY = scaleX;
128 return WebKitCSSMatrix::create(m_matrix.scale(scaleX,scaleY));
129 }
130
rotate(float rot)131 PassRefPtr<WebKitCSSMatrix> WebKitCSSMatrix::rotate(float rot)
132 {
133 if (isnan(rot))
134 rot = 0;
135 return WebKitCSSMatrix::create(m_matrix.rotate(rot));
136 }
137
toString()138 String WebKitCSSMatrix::toString()
139 {
140 return String::format("matrix(%f, %f, %f, %f, %f, %f)",
141 m_matrix.a(), m_matrix.b(), m_matrix.c(), m_matrix.d(), m_matrix.e(), m_matrix.f());
142 }
143
144 } // namespace WebCore
145