1 /*
2 Copyright (C) 2004, 2005 Nikolas Zimmermann <wildfox@kde.org>
3 2004, 2005 Rob Buis <buis@kde.org>
4
5 This library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Library General Public
7 License as published by the Free Software Foundation; either
8 version 2 of the License, or (at your option) any later version.
9
10 This library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Library General Public License for more details.
14
15 You should have received a copy of the GNU Library General Public License
16 along with this library; see the file COPYING.LIB. If not, write to
17 the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
18 Boston, MA 02110-1301, USA.
19 */
20
21 #include "config.h"
22 #if ENABLE(SVG)
23
24 #include "FloatPoint.h"
25 #include "FloatSize.h"
26 #include "SVGAngle.h"
27 #include "SVGSVGElement.h"
28 #include "SVGTransform.h"
29
30 #include <math.h>
31
32 using namespace WebCore;
33
SVGTransform()34 SVGTransform::SVGTransform()
35 : m_type(SVG_TRANSFORM_UNKNOWN)
36 , m_angle(0)
37 {
38 }
39
SVGTransform(SVGTransformType type)40 SVGTransform::SVGTransform(SVGTransformType type)
41 : m_type(type)
42 , m_angle(0)
43 , m_center(FloatPoint())
44 , m_matrix(AffineTransform())
45 {
46 }
47
SVGTransform(const AffineTransform & matrix)48 SVGTransform::SVGTransform(const AffineTransform& matrix)
49 : m_type(SVG_TRANSFORM_MATRIX)
50 , m_angle(0)
51 , m_matrix(matrix)
52 {
53 }
54
~SVGTransform()55 SVGTransform::~SVGTransform()
56 {
57 }
58
isValid()59 bool SVGTransform::isValid()
60 {
61 return (m_type != SVG_TRANSFORM_UNKNOWN);
62 }
63
type() const64 SVGTransform::SVGTransformType SVGTransform::type() const
65 {
66 return m_type;
67 }
68
matrix() const69 AffineTransform SVGTransform::matrix() const
70 {
71 return m_matrix;
72 }
73
angle() const74 float SVGTransform::angle() const
75 {
76 return m_angle;
77 }
78
rotationCenter() const79 FloatPoint SVGTransform::rotationCenter() const
80 {
81 return m_center;
82 }
83
setMatrix(AffineTransform matrix)84 void SVGTransform::setMatrix(AffineTransform matrix)
85 {
86 m_type = SVG_TRANSFORM_MATRIX;
87 m_angle = 0;
88
89 m_matrix = matrix;
90 }
91
setTranslate(float tx,float ty)92 void SVGTransform::setTranslate(float tx, float ty)
93 {
94 m_type = SVG_TRANSFORM_TRANSLATE;
95 m_angle = 0;
96
97 m_matrix.makeIdentity();
98 m_matrix.translate(tx, ty);
99 }
100
translate() const101 FloatPoint SVGTransform::translate() const
102 {
103 return FloatPoint::narrowPrecision(m_matrix.e(), m_matrix.f());
104 }
105
setScale(float sx,float sy)106 void SVGTransform::setScale(float sx, float sy)
107 {
108 m_type = SVG_TRANSFORM_SCALE;
109 m_angle = 0;
110 m_center = FloatPoint();
111
112 m_matrix.makeIdentity();
113 m_matrix.scaleNonUniform(sx, sy);
114 }
115
scale() const116 FloatSize SVGTransform::scale() const
117 {
118 return FloatSize::narrowPrecision(m_matrix.a(), m_matrix.d());
119 }
120
setRotate(float angle,float cx,float cy)121 void SVGTransform::setRotate(float angle, float cx, float cy)
122 {
123 m_type = SVG_TRANSFORM_ROTATE;
124 m_angle = angle;
125 m_center = FloatPoint(cx, cy);
126
127 // TODO: toString() implementation, which can show cx, cy (need to be stored?)
128 m_matrix.makeIdentity();
129 m_matrix.translate(cx, cy);
130 m_matrix.rotate(angle);
131 m_matrix.translate(-cx, -cy);
132 }
133
setSkewX(float angle)134 void SVGTransform::setSkewX(float angle)
135 {
136 m_type = SVG_TRANSFORM_SKEWX;
137 m_angle = angle;
138
139 m_matrix.makeIdentity();
140 m_matrix.skewX(angle);
141 }
142
setSkewY(float angle)143 void SVGTransform::setSkewY(float angle)
144 {
145 m_type = SVG_TRANSFORM_SKEWY;
146 m_angle = angle;
147
148 m_matrix.makeIdentity();
149 m_matrix.skewY(angle);
150 }
151
152 #endif // ENABLE(SVG)
153
154