third_party/WebKit/Source/core/svg/SVGPathTraversalStateBuilder.h

   1 /*
   2  * Copyright (C) 2007 Eric Seidel <eric@webkit.org>
   3  * Copyright (C) Research In Motion Limited 2010. All rights reserved.
   4  *
   5  * This library is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU Library General Public
   7  * License as published by the Free Software Foundation; either
   8  * version 2 of the License, or (at your option) any later version.
   9  *
  10  * This library is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13  * Library General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU Library General Public License
  16  * along with this library; see the file COPYING.LIB.  If not, write to
  17  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  18  * Boston, MA 02110-1301, USA.
  19  */
  20
  21 #ifndef SVGPathTraversalStateBuilder_h
  22 #define SVGPathTraversalStateBuilder_h
  23
  24 #include "core/svg/SVGPathConsumer.h"
  25 #include "platform/graphics/PathTraversalState.h"
  26
  27 namespace blink {
  28
  29 class FloatPoint;
  30
  31 class SVGPathTraversalStateBuilder final : public SVGPathConsumer {
  32 public:
  33     SVGPathTraversalStateBuilder(PathTraversalState::PathTraversalAction, float desiredLength = 0);
  34
  35     unsigned pathSegmentIndex() const { return m_segmentIndex; }
  36     float totalLength();
  37     FloatPoint currentPoint();
  38
  39     void incrementPathSegmentCount() override;
  40     bool continueConsuming() override;
  41
  42 private:
  43     void emitSegment(const PathSegmentData&) override;
  44
  45     PathTraversalState m_traversalState;
  46     unsigned m_segmentIndex;
  47 };
  48
  49 } // namespace blink
  50
  51 #endif // SVGPathTraversalStateBuilder_h