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      1 /*
      2  * Copyright (C) 2002, 2003 The Karbon Developers
      3  * Copyright (C) 2006 Alexander Kellett <lypanov (at) kde.org>
      4  * Copyright (C) 2006, 2007 Rob Buis <buis (at) kde.org>
      5  * Copyright (C) 2007, 2009 Apple Inc. All rights reserved.
      6  * Copyright (C) Research In Motion Limited 2010. All rights reserved.
      7  *
      8  * This library is free software; you can redistribute it and/or
      9  * modify it under the terms of the GNU Library General Public
     10  * License as published by the Free Software Foundation; either
     11  * version 2 of the License, or (at your option) any later version.
     12  *
     13  * This library is distributed in the hope that it will be useful,
     14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
     15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
     16  * Library General Public License for more details.
     17  *
     18  * You should have received a copy of the GNU Library General Public License
     19  * along with this library; see the file COPYING.LIB.  If not, write to
     20  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
     21  * Boston, MA 02110-1301, USA.
     22  */
     23 
     24 #include "config.h"
     25 
     26 #if ENABLE(SVG)
     27 #include "SVGPathBuilder.h"
     28 
     29 namespace WebCore {
     30 
     31 SVGPathBuilder::SVGPathBuilder()
     32     : m_path(0)
     33 {
     34 }
     35 
     36 void SVGPathBuilder::moveTo(const FloatPoint& targetPoint, bool closed, PathCoordinateMode mode)
     37 {
     38     ASSERT(m_path);
     39     m_current = mode == AbsoluteCoordinates ? targetPoint : m_current + targetPoint;
     40     if (closed && !m_path->isEmpty())
     41         m_path->closeSubpath();
     42     m_path->moveTo(m_current);
     43 }
     44 
     45 void SVGPathBuilder::lineTo(const FloatPoint& targetPoint, PathCoordinateMode mode)
     46 {
     47     ASSERT(m_path);
     48     m_current = mode == AbsoluteCoordinates ? targetPoint : m_current + targetPoint;
     49     m_path->addLineTo(m_current);
     50 }
     51 
     52 void SVGPathBuilder::curveToCubic(const FloatPoint& point1, const FloatPoint& point2, const FloatPoint& targetPoint, PathCoordinateMode mode)
     53 {
     54     ASSERT(m_path);
     55     if (mode == RelativeCoordinates) {
     56         m_path->addBezierCurveTo(m_current + point1, m_current + point2, m_current + targetPoint);
     57         m_current += targetPoint;
     58     } else {
     59         m_current = targetPoint;
     60         m_path->addBezierCurveTo(point1, point2, m_current);
     61     }
     62 }
     63 
     64 void SVGPathBuilder::closePath()
     65 {
     66     ASSERT(m_path);
     67     m_path->closeSubpath();
     68 }
     69 
     70 }
     71 
     72 #endif // ENABLE(SVG)
     73