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SVGTransform.cpp
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1/*
2 Copyright (C) 2004, 2005 Nikolas Zimmermann <wildfox@kde.org>
3 2004, 2005 Rob Buis <buis@kde.org>
4
5 This file is part of the KDE project
6
7 This library is free software; you can redistribute it and/or
8 modify it under the terms of the GNU Library General Public
9 License as published by the Free Software Foundation; either
10 version 2 of the License, or (at your option) any later version.
11
12 This library is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 Library General Public License for more details.
16
17 You should have received a copy of the GNU Library General Public License
18 along with this library; see the file COPYING.LIB. If not, write to
19 the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
20 Boston, MA 02110-1301, USA.
21*/
22
23#include "config.h"
24#include "wtf/Platform.h"
25#if ENABLE(SVG)
26
27#include "FloatPoint.h"
28#include "FloatSize.h"
29#include "SVGAngle.h"
30#include "SVGSVGElement.h"
31#include "SVGTransform.h"
32
33#include <math.h>
34
35using namespace WebCore;
36
37SVGTransform::SVGTransform()
38 : m_type(SVG_TRANSFORM_UNKNOWN)
39 , m_angle(0)
40{
41}
42
43SVGTransform::SVGTransform(SVGTransformType type)
44 : m_type(type)
45 , m_angle(0)
46 , m_center(FloatPoint())
47 , m_matrix(AffineTransform())
48{
49}
50
51SVGTransform::SVGTransform(const AffineTransform& matrix)
52 : m_type(SVG_TRANSFORM_MATRIX)
53 , m_angle(0)
54 , m_matrix(matrix)
55{
56}
57
58SVGTransform::~SVGTransform()
59{
60}
61
62bool SVGTransform::isValid()
63{
64 return (m_type != SVG_TRANSFORM_UNKNOWN);
65}
66
67SVGTransform::SVGTransformType SVGTransform::type() const
68{
69 return m_type;
70}
71
72AffineTransform SVGTransform::matrix() const
73{
74 return m_matrix;
75}
76
77float SVGTransform::angle() const
78{
79 return m_angle;
80}
81
82FloatPoint SVGTransform::rotationCenter() const
83{
84 return m_center;
85}
86
87void SVGTransform::setMatrix(const AffineTransform& matrix)
88{
89 m_type = SVG_TRANSFORM_MATRIX;
90 m_angle = 0;
91
92 m_matrix = matrix;
93}
94
95void SVGTransform::setTranslate(float tx, float ty)
96{
97 m_type = SVG_TRANSFORM_TRANSLATE;
98 m_angle = 0;
99
100 m_matrix.reset();
101 m_matrix.translate(tx, ty);
102}
103
104FloatPoint SVGTransform::translate() const
105{
106 return FloatPoint::narrowPrecision(m_matrix.e(), m_matrix.f());
107}
108
109void SVGTransform::setScale(float sx, float sy)
110{
111 m_type = SVG_TRANSFORM_SCALE;
112 m_angle = 0;
113 m_center = FloatPoint();
114
115 m_matrix.reset();
116 m_matrix.scale(sx, sy);
117}
118
119FloatSize SVGTransform::scale() const
120{
121 return FloatSize::narrowPrecision(m_matrix.a(), m_matrix.d());
122}
123
124void SVGTransform::setRotate(float angle, float cx, float cy)
125{
126 m_type = SVG_TRANSFORM_ROTATE;
127 m_angle = angle;
128 m_center = FloatPoint(cx, cy);
129
130 // TODO: toString() implementation, which can show cx, cy (need to be stored?)
131 m_matrix.reset();
132 m_matrix.translate(cx, cy);
133 m_matrix.rotate(angle);
134 m_matrix.translate(-cx, -cy);
135}
136
137void SVGTransform::setSkewX(float angle)
138{
139 m_type = SVG_TRANSFORM_SKEWX;
140 m_angle = angle;
141
142 m_matrix.reset();
143 m_matrix.skewX(angle);
144}
145
146void SVGTransform::setSkewY(float angle)
147{
148 m_type = SVG_TRANSFORM_SKEWY;
149 m_angle = angle;
150
151 m_matrix.reset();
152 m_matrix.skewY(angle);
153}
154
155// vim:ts=4:noet
156#endif // ENABLE(SVG)
157
FloatPoint.h
FloatSize.h
SVGAngle.h
SVGSVGElement.h
SVGTransform.h
WebCore::AffineTransform
Definition: AffineTransform.h:47
WebCore::AffineTransform::reset
void reset()
Definition: AffineTransformQt.cpp:138
WebCore::FloatPoint
Definition: FloatPoint.h:61
WebCore::FloatSize
Definition: FloatSize.h:48
WebCore
Definition: CSSHelper.h:7
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