1/*
2 * Copyright (C) Research In Motion Limited 2010. All rights reserved.
3 * Copyright (C) 2015 Apple Inc. 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#pragma once
22
23#include "SVGPathConsumer.h"
24
25namespace WebCore {
26
27enum FloatBlendMode {
28 BlendHorizontal,
29 BlendVertical
30};
31
32class SVGPathSource;
33
34class SVGPathBlender {
35 WTF_MAKE_NONCOPYABLE(SVGPathBlender); WTF_MAKE_FAST_ALLOCATED;
36public:
37
38 static bool addAnimatedPath(SVGPathSource& from, SVGPathSource& to, SVGPathConsumer&, unsigned repeatCount);
39 static bool blendAnimatedPath(SVGPathSource& from, SVGPathSource& to, SVGPathConsumer&, float);
40
41 static bool canBlendPaths(SVGPathSource& from, SVGPathSource& to);
42
43private:
44 SVGPathBlender(SVGPathSource&, SVGPathSource&, SVGPathConsumer* = nullptr);
45
46 bool canBlendPaths();
47
48 bool addAnimatedPath(unsigned repeatCount);
49 bool blendAnimatedPath(float progress);
50
51 bool blendMoveToSegment(float progress);
52 bool blendLineToSegment(float progress);
53 bool blendLineToHorizontalSegment(float progress);
54 bool blendLineToVerticalSegment(float progress);
55 bool blendCurveToCubicSegment(float progress);
56 bool blendCurveToCubicSmoothSegment(float progress);
57 bool blendCurveToQuadraticSegment(float progress);
58 bool blendCurveToQuadraticSmoothSegment(float progress);
59 bool blendArcToSegment(float progress);
60
61 float blendAnimatedDimensonalFloat(float from, float to, FloatBlendMode, float progress);
62 FloatPoint blendAnimatedFloatPoint(const FloatPoint& from, const FloatPoint& to, float progress);
63
64 SVGPathSource& m_fromSource;
65 SVGPathSource& m_toSource;
66 SVGPathConsumer* m_consumer; // A null consumer indicates that we're just checking blendability.
67
68 FloatPoint m_fromCurrentPoint;
69 FloatPoint m_toCurrentPoint;
70
71 PathCoordinateMode m_fromMode { AbsoluteCoordinates };
72 PathCoordinateMode m_toMode { AbsoluteCoordinates };
73 unsigned m_addTypesCount { 0 };
74 bool m_isInFirstHalfOfAnimation { false };
75};
76
77} // namespace WebCore
78