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/*
* Copyright (C) 2004, 2005 Nikolas Zimmermann <zimmermann@kde.org>
* Copyright (C) 2004, 2005 Rob Buis <buis@kde.org>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public License
* along with this library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#include "config.h"
#if ENABLE(SVG)
#include "FloatPoint.h"
#include "FloatSize.h"
#include "SVGAngle.h"
#include "SVGSVGElement.h"
#include "SVGTransform.h"
#include <wtf/MathExtras.h>
namespace WebCore {
SVGTransform::SVGTransform()
: m_type(SVG_TRANSFORM_UNKNOWN)
, m_angle(0)
{
}
SVGTransform::SVGTransform(SVGTransformType type)
: m_type(type)
, m_angle(0)
{
}
SVGTransform::SVGTransform(const AffineTransform& matrix)
: m_type(SVG_TRANSFORM_MATRIX)
, m_angle(0)
, m_matrix(matrix)
{
}
void SVGTransform::setMatrix(const AffineTransform& matrix)
{
m_type = SVG_TRANSFORM_MATRIX;
m_angle = 0;
m_matrix = matrix;
}
void SVGTransform::updateMatrix()
{
// The underlying matrix has been changed, alter the transformation type.
// Spec: In case the matrix object is changed directly (i.e., without using the methods on the SVGTransform interface itself)
// then the type of the SVGTransform changes to SVG_TRANSFORM_MATRIX.
m_type = SVG_TRANSFORM_MATRIX;
m_angle = 0;
}
void SVGTransform::setTranslate(float tx, float ty)
{
m_type = SVG_TRANSFORM_TRANSLATE;
m_angle = 0;
m_matrix.makeIdentity();
m_matrix.translate(tx, ty);
}
FloatPoint SVGTransform::translate() const
{
return FloatPoint::narrowPrecision(m_matrix.e(), m_matrix.f());
}
void SVGTransform::setScale(float sx, float sy)
{
m_type = SVG_TRANSFORM_SCALE;
m_angle = 0;
m_center = FloatPoint();
m_matrix.makeIdentity();
m_matrix.scaleNonUniform(sx, sy);
}
FloatSize SVGTransform::scale() const
{
return FloatSize::narrowPrecision(m_matrix.a(), m_matrix.d());
}
void SVGTransform::setRotate(float angle, float cx, float cy)
{
m_type = SVG_TRANSFORM_ROTATE;
m_angle = angle;
m_center = FloatPoint(cx, cy);
// TODO: toString() implementation, which can show cx, cy (need to be stored?)
m_matrix.makeIdentity();
m_matrix.translate(cx, cy);
m_matrix.rotate(angle);
m_matrix.translate(-cx, -cy);
}
void SVGTransform::setSkewX(float angle)
{
m_type = SVG_TRANSFORM_SKEWX;
m_angle = angle;
m_matrix.makeIdentity();
m_matrix.skewX(angle);
}
void SVGTransform::setSkewY(float angle)
{
m_type = SVG_TRANSFORM_SKEWY;
m_angle = angle;
m_matrix.makeIdentity();
m_matrix.skewY(angle);
}
} // namespace WebCore
#endif // ENABLE(SVG)
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