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 "core/svg/SVGPoint.h"
26
27namespace blink {
28
29class PathTraversalState;
30
31class SVGPathTraversalStateBuilder FINAL : public SVGPathConsumer {
32public:
33    SVGPathTraversalStateBuilder();
34
35    unsigned pathSegmentIndex();
36    float totalLength();
37    FloatPoint currentPoint();
38
39    void setCurrentTraversalState(PathTraversalState* traversalState) { m_traversalState = traversalState; }
40    void setDesiredLength(float);
41    virtual void incrementPathSegmentCount() OVERRIDE;
42    virtual bool continueConsuming() OVERRIDE;
43    virtual void cleanup() OVERRIDE { m_traversalState = 0; }
44
45private:
46    // Used in UnalteredParsing/NormalizedParsing modes.
47    virtual void moveTo(const FloatPoint&, bool closed, PathCoordinateMode) OVERRIDE;
48    virtual void lineTo(const FloatPoint&, PathCoordinateMode) OVERRIDE;
49    virtual void curveToCubic(const FloatPoint&, const FloatPoint&, const FloatPoint&, PathCoordinateMode) OVERRIDE;
50    virtual void closePath() OVERRIDE;
51
52private:
53    // Not used for PathTraversalState.
54    virtual void lineToHorizontal(float, PathCoordinateMode) OVERRIDE { ASSERT_NOT_REACHED(); }
55    virtual void lineToVertical(float, PathCoordinateMode) OVERRIDE { ASSERT_NOT_REACHED(); }
56    virtual void curveToCubicSmooth(const FloatPoint&, const FloatPoint&, PathCoordinateMode) OVERRIDE { ASSERT_NOT_REACHED(); }
57    virtual void curveToQuadratic(const FloatPoint&, const FloatPoint&, PathCoordinateMode) OVERRIDE { ASSERT_NOT_REACHED(); }
58    virtual void curveToQuadraticSmooth(const FloatPoint&, PathCoordinateMode) OVERRIDE { ASSERT_NOT_REACHED(); }
59    virtual void arcTo(float, float, float, bool, bool, const FloatPoint&, PathCoordinateMode) OVERRIDE { ASSERT_NOT_REACHED(); }
60
61    PathTraversalState* m_traversalState;
62};
63
64} // namespace blink
65
66#endif // SVGPathTraversalStateBuilder_h
67