1/*
2 * Copyright (C) 2002, 2003 The Karbon Developers
3 * Copyright (C) 2006 Alexander Kellett <lypanov@kde.org>
4 * Copyright (C) 2006, 2007 Rob Buis <buis@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#ifndef SVGPathConsumer_h
25#define SVGPathConsumer_h
26
27#include "platform/geometry/FloatPoint.h"
28#include "wtf/FastAllocBase.h"
29#include "wtf/Noncopyable.h"
30
31namespace blink {
32
33enum PathCoordinateMode {
34    AbsoluteCoordinates,
35    RelativeCoordinates
36};
37
38enum PathParsingMode {
39    NormalizedParsing,
40    UnalteredParsing
41};
42
43class SVGPathConsumer {
44    WTF_MAKE_NONCOPYABLE(SVGPathConsumer); WTF_MAKE_FAST_ALLOCATED;
45public:
46    SVGPathConsumer() { }
47    virtual void incrementPathSegmentCount() = 0;
48    virtual bool continueConsuming() = 0;
49    virtual void cleanup() = 0;
50
51    // Used in UnalteredParsing/NormalizedParsing modes.
52    virtual void moveTo(const FloatPoint&, bool closed, PathCoordinateMode) = 0;
53    virtual void lineTo(const FloatPoint&, PathCoordinateMode) = 0;
54    virtual void curveToCubic(const FloatPoint&, const FloatPoint&, const FloatPoint&, PathCoordinateMode) = 0;
55    virtual void closePath() = 0;
56
57    // Only used in UnalteredParsing mode.
58    virtual void lineToHorizontal(float, PathCoordinateMode) = 0;
59    virtual void lineToVertical(float, PathCoordinateMode) = 0;
60    virtual void curveToCubicSmooth(const FloatPoint&, const FloatPoint&, PathCoordinateMode) = 0;
61    virtual void curveToQuadratic(const FloatPoint&, const FloatPoint&, PathCoordinateMode) = 0;
62    virtual void curveToQuadraticSmooth(const FloatPoint&, PathCoordinateMode) = 0;
63    virtual void arcTo(float, float, float, bool largeArcFlag, bool sweepFlag, const FloatPoint&, PathCoordinateMode) = 0;
64
65protected:
66    virtual ~SVGPathConsumer() { }
67};
68
69} // namespace blink
70
71#endif // SVGPathConsumer_h
72