WebCore/svg/SVGTransform.cpp
changeset 0 4f2f89ce4247
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/WebCore/svg/SVGTransform.cpp	Fri Sep 17 09:02:29 2010 +0300
@@ -0,0 +1,153 @@
+/*
+    Copyright (C) 2004, 2005 Nikolas Zimmermann <wildfox@kde.org>
+                  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 <math.h>
+
+using namespace WebCore;
+
+SVGTransform::SVGTransform()
+    : m_type(SVG_TRANSFORM_UNKNOWN)
+    , m_angle(0)
+{
+}
+
+SVGTransform::SVGTransform(SVGTransformType type)
+    : m_type(type)
+    , m_angle(0)
+    , m_center(FloatPoint())
+    , m_matrix(AffineTransform())
+{
+}
+
+SVGTransform::SVGTransform(const AffineTransform& matrix)
+    : m_type(SVG_TRANSFORM_MATRIX)
+    , m_angle(0)
+    , m_matrix(matrix)
+{
+}
+
+SVGTransform::~SVGTransform()
+{
+}
+
+bool SVGTransform::isValid()
+{
+    return (m_type != SVG_TRANSFORM_UNKNOWN);
+}
+
+SVGTransform::SVGTransformType SVGTransform::type() const
+{
+    return m_type;
+}
+
+AffineTransform SVGTransform::matrix() const
+{
+    return m_matrix;
+}
+
+float SVGTransform::angle() const
+{
+    return m_angle;
+}
+
+FloatPoint SVGTransform::rotationCenter() const
+{
+    return m_center;
+}
+
+void SVGTransform::setMatrix(AffineTransform matrix)
+{
+    m_type = SVG_TRANSFORM_MATRIX;
+    m_angle = 0;
+
+    m_matrix = matrix;
+}
+
+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);
+}
+
+#endif // ENABLE(SVG)
+