jssvgmatrixcustom.cpp

来自「linux下开源浏览器WebKit的源码,市面上的很多商用浏览器都是移植自Web」· C++ 代码 · 共 61 行

/*
 * Copyright (C) 2006, 2007, 2008 Nikolas Zimmermann <[e-mail]>
 *
 * 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 "JSSVGMatrix.h"

#include "TransformationMatrix.h"
#include "SVGException.h"

using namespace JSC;

namespace WebCore {

JSValuePtr JSSVGMatrix::inverse(ExecState* exec, const ArgList&)
{
    TransformationMatrix imp(*impl());
    JSC::JSValuePtr result = toJS(exec, JSSVGStaticPODTypeWrapper<TransformationMatrix>::create(imp.inverse()).get(), m_context.get());

    if (!imp.isInvertible())
        setDOMException(exec, SVGException::SVG_MATRIX_NOT_INVERTABLE);

    return result;
}

JSValuePtr JSSVGMatrix::rotateFromVector(ExecState* exec, const ArgList& args)
{
    TransformationMatrix imp(*impl());
 
    float x = args.at(exec, 0).toFloat(exec);
    float y = args.at(exec, 1).toFloat(exec);

    JSC::JSValuePtr result = toJS(exec, JSSVGStaticPODTypeWrapper<TransformationMatrix>::create(imp.rotateFromVector(x, y)).get(), m_context.get());

    if (x == 0.0 || y == 0.0)
        setDOMException(exec, SVGException::SVG_INVALID_VALUE_ERR);

    return result;
}

}

#endif // ENABLE(SVG)