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#include "config.h"
21
22#include "core/svg/SVGPathSegListSource.h"
23
24#include "core/svg/SVGPathSegArc.h"
25#include "core/svg/SVGPathSegCurvetoCubic.h"
26#include "core/svg/SVGPathSegCurvetoCubicSmooth.h"
27#include "core/svg/SVGPathSegCurvetoQuadratic.h"
28#include "core/svg/SVGPathSegLinetoHorizontal.h"
29#include "core/svg/SVGPathSegLinetoVertical.h"
30
31namespace blink {
32
33SVGPathSegListSource::SVGPathSegListSource(SVGPathSegList::ConstIterator itBegin, SVGPathSegList::ConstIterator itEnd)
34    : m_itCurrent(itBegin)
35    , m_itEnd(itEnd)
36{
37}
38
39bool SVGPathSegListSource::hasMoreData() const
40{
41    return m_itCurrent != m_itEnd;
42}
43
44bool SVGPathSegListSource::parseSVGSegmentType(SVGPathSegType& pathSegType)
45{
46    m_segment = *m_itCurrent;
47    pathSegType = static_cast<SVGPathSegType>(m_segment->pathSegType());
48    ++m_itCurrent;
49    return true;
50}
51
52SVGPathSegType SVGPathSegListSource::nextCommand(SVGPathSegType)
53{
54    m_segment = *m_itCurrent;
55    SVGPathSegType pathSegType = static_cast<SVGPathSegType>(m_segment->pathSegType());
56    ++m_itCurrent;
57    return pathSegType;
58}
59
60bool SVGPathSegListSource::parseMoveToSegment(FloatPoint& targetPoint)
61{
62    ASSERT(m_segment);
63    ASSERT(m_segment->pathSegType() == PathSegMoveToAbs || m_segment->pathSegType() == PathSegMoveToRel);
64    SVGPathSegSingleCoordinate* moveTo = static_cast<SVGPathSegSingleCoordinate*>(m_segment.get());
65    targetPoint = FloatPoint(moveTo->x(), moveTo->y());
66    return true;
67}
68
69bool SVGPathSegListSource::parseLineToSegment(FloatPoint& targetPoint)
70{
71    ASSERT(m_segment);
72    ASSERT(m_segment->pathSegType() == PathSegLineToAbs || m_segment->pathSegType() == PathSegLineToRel);
73    SVGPathSegSingleCoordinate* lineTo = static_cast<SVGPathSegSingleCoordinate*>(m_segment.get());
74    targetPoint = FloatPoint(lineTo->x(), lineTo->y());
75    return true;
76}
77
78bool SVGPathSegListSource::parseLineToHorizontalSegment(float& x)
79{
80    ASSERT(m_segment);
81    ASSERT(m_segment->pathSegType() == PathSegLineToHorizontalAbs || m_segment->pathSegType() == PathSegLineToHorizontalRel);
82    SVGPathSegLinetoHorizontal* horizontal = static_cast<SVGPathSegLinetoHorizontal*>(m_segment.get());
83    x = horizontal->x();
84    return true;
85}
86
87bool SVGPathSegListSource::parseLineToVerticalSegment(float& y)
88{
89    ASSERT(m_segment);
90    ASSERT(m_segment->pathSegType() == PathSegLineToVerticalAbs || m_segment->pathSegType() == PathSegLineToVerticalRel);
91    SVGPathSegLinetoVertical* vertical = static_cast<SVGPathSegLinetoVertical*>(m_segment.get());
92    y = vertical->y();
93    return true;
94}
95
96bool SVGPathSegListSource::parseCurveToCubicSegment(FloatPoint& point1, FloatPoint& point2, FloatPoint& targetPoint)
97{
98    ASSERT(m_segment);
99    ASSERT(m_segment->pathSegType() == PathSegCurveToCubicAbs || m_segment->pathSegType() == PathSegCurveToCubicRel);
100    SVGPathSegCurvetoCubic* cubic = static_cast<SVGPathSegCurvetoCubic*>(m_segment.get());
101    point1 = FloatPoint(cubic->x1(), cubic->y1());
102    point2 = FloatPoint(cubic->x2(), cubic->y2());
103    targetPoint = FloatPoint(cubic->x(), cubic->y());
104    return true;
105}
106
107bool SVGPathSegListSource::parseCurveToCubicSmoothSegment(FloatPoint& point2, FloatPoint& targetPoint)
108{
109    ASSERT(m_segment);
110    ASSERT(m_segment->pathSegType() == PathSegCurveToCubicSmoothAbs || m_segment->pathSegType() == PathSegCurveToCubicSmoothRel);
111    SVGPathSegCurvetoCubicSmooth* cubicSmooth = static_cast<SVGPathSegCurvetoCubicSmooth*>(m_segment.get());
112    point2 = FloatPoint(cubicSmooth->x2(), cubicSmooth->y2());
113    targetPoint = FloatPoint(cubicSmooth->x(), cubicSmooth->y());
114    return true;
115}
116
117bool SVGPathSegListSource::parseCurveToQuadraticSegment(FloatPoint& point1, FloatPoint& targetPoint)
118{
119    ASSERT(m_segment);
120    ASSERT(m_segment->pathSegType() == PathSegCurveToQuadraticAbs || m_segment->pathSegType() == PathSegCurveToQuadraticRel);
121    SVGPathSegCurvetoQuadratic* quadratic = static_cast<SVGPathSegCurvetoQuadratic*>(m_segment.get());
122    point1 = FloatPoint(quadratic->x1(), quadratic->y1());
123    targetPoint = FloatPoint(quadratic->x(), quadratic->y());
124    return true;
125}
126
127bool SVGPathSegListSource::parseCurveToQuadraticSmoothSegment(FloatPoint& targetPoint)
128{
129    ASSERT(m_segment);
130    ASSERT(m_segment->pathSegType() == PathSegCurveToQuadraticSmoothAbs || m_segment->pathSegType() == PathSegCurveToQuadraticSmoothRel);
131    SVGPathSegSingleCoordinate* quadraticSmooth = static_cast<SVGPathSegSingleCoordinate*>(m_segment.get());
132    targetPoint = FloatPoint(quadraticSmooth->x(), quadraticSmooth->y());
133    return true;
134}
135
136bool SVGPathSegListSource::parseArcToSegment(float& rx, float& ry, float& angle, bool& largeArc, bool& sweep, FloatPoint& targetPoint)
137{
138    ASSERT(m_segment);
139    ASSERT(m_segment->pathSegType() == PathSegArcAbs || m_segment->pathSegType() == PathSegArcRel);
140    SVGPathSegArc* arcTo = static_cast<SVGPathSegArc*>(m_segment.get());
141    rx = arcTo->r1();
142    ry = arcTo->r2();
143    angle = arcTo->angle();
144    largeArc = arcTo->largeArcFlag();
145    sweep = arcTo->sweepFlag();
146    targetPoint = FloatPoint(arcTo->x(), arcTo->y());
147    return true;
148}
149
150}
151