1/*
2 * Copyright (C) Research In Motion Limited 2010. All rights reserved.
3 *
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Library General Public
6 * License as published by the Free Software Foundation; either
7 * version 2 of the License, or (at your option) any later version.
8 *
9 * This library is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
12 * Library General Public License for more details.
13 *
14 * You should have received a copy of the GNU Library General Public License
15 * along with this library; see the file COPYING.LIB.  If not, write to
16 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
17 * Boston, MA 02110-1301, USA.
18 */
19
20#ifndef SVGMarkerLayoutInfo_h
21#define SVGMarkerLayoutInfo_h
22
23#if ENABLE(SVG)
24#include "AffineTransform.h"
25#include "RenderObject.h"
26#include "SVGMarkerData.h"
27#include <wtf/Noncopyable.h>
28
29namespace WebCore {
30
31class Path;
32class RenderSVGResourceMarker;
33
34struct MarkerLayout {
35    MarkerLayout(RenderSVGResourceMarker* markerObj = 0, AffineTransform matrixObj = AffineTransform())
36        : marker(markerObj)
37        , matrix(matrixObj)
38    {
39        ASSERT(marker);
40    }
41
42    RenderSVGResourceMarker* marker;
43    AffineTransform matrix;
44};
45
46class SVGMarkerLayoutInfo {
47    WTF_MAKE_NONCOPYABLE(SVGMarkerLayoutInfo);
48public:
49    SVGMarkerLayoutInfo();
50    ~SVGMarkerLayoutInfo();
51
52    FloatRect calculateBoundaries(RenderSVGResourceMarker* startMarker, RenderSVGResourceMarker* midMarker, RenderSVGResourceMarker* endMarker, float strokeWidth, const Path&);
53    void drawMarkers(PaintInfo&);
54
55    // Used by static inline helper functions in SVGMarkerLayoutInfo.cpp
56    SVGMarkerData& markerData() { return m_markerData; }
57    RenderSVGResourceMarker* midMarker() const { return m_midMarker; }
58    int& elementIndex() { return m_elementIndex; }
59    void addLayoutedMarker(RenderSVGResourceMarker*, const FloatPoint& origin, float angle);
60    void clear();
61
62private:
63    RenderSVGResourceMarker* m_midMarker;
64
65    // Used while layouting markers
66    int m_elementIndex;
67    SVGMarkerData m_markerData;
68    float m_strokeWidth;
69
70    // Holds the final computed result
71    Vector<MarkerLayout> m_layout;
72};
73
74}
75
76#endif
77#endif
78