1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
|
/****************************************************************************
**
** Copyright (C) 2012 Digia Plc
** All rights reserved.
** For any questions to Digia, please use contact form at http://qt.digia.com
**
** This file is part of the Qt Commercial Charts Add-on.
**
** $QT_BEGIN_LICENSE$
** Licensees holding valid Qt Commercial licenses may use this file in
** accordance with the Qt Commercial License Agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Digia.
**
** If you have questions regarding the use of this file, please use
** contact form at http://qt.digia.com
** $QT_END_LICENSE$
**
****************************************************************************/
#include "splinechartitem_p.h"
#include "qsplineseries_p.h"
#include "chartpresenter_p.h"
#include "chartanimator_p.h"
#include <QPainter>
#include <QDebug>
QTCOMMERCIALCHART_BEGIN_NAMESPACE
SplineChartItem::SplineChartItem(QSplineSeries *series, ChartPresenter *presenter) :
XYChartItem(series, presenter),
m_series(series),
m_pointsVisible(false)
{
setZValue(ChartPresenter::LineChartZValue);
QObject::connect(m_series->d_func(),SIGNAL(updated()),this,SLOT(handleUpdated()));
handleUpdated();
}
QRectF SplineChartItem::boundingRect() const
{
return m_rect;
}
QPainterPath SplineChartItem::shape() const
{
return m_path;
}
void SplineChartItem::updateLayout(QVector<QPointF> &oldPoints, QVector<QPointF> &newPoints,int index)
{
QVector<QPointF> controlPoints;
if(newPoints.count()>=2){
controlPoints.resize(newPoints.count()*2-2);
}
for (int i = 0; i < newPoints.size() - 1; i++) {
controlPoints[2*i] = calculateGeometryControlPoint(2 * i);
controlPoints[2 * i + 1] = calculateGeometryControlPoint(2 * i + 1);
}
if (controlPoints.count()<2) {
setLayout(newPoints,controlPoints);
return;
}
if (animator()) {
animator()->updateLayout(this,oldPoints,newPoints,m_controlPoints,controlPoints,index);
} else {
setLayout(newPoints,controlPoints);
}
}
QPointF SplineChartItem::calculateGeometryControlPoint(int index) const
{
return XYChartItem::calculateGeometryPoint(m_series->controlPoint(index));
}
void SplineChartItem::setLayout(QVector<QPointF> &points)
{
// Dummy implementation because of a bug in Clang compiler
if (points.size() < 2) {
m_path = QPainterPath();
}
XYChartItem::setLayout(points);
}
void SplineChartItem::setLayout(QVector<QPointF> &points, QVector<QPointF> &controlPoints)
{
if ((points.size()<2) || (controlPoints.size()<2)) {
m_path = QPainterPath();
XYChartItem::setLayout(points);
m_controlPoints=controlPoints;
return;
}
Q_ASSERT(points.count()*2-2 == controlPoints.count());
QPainterPath splinePath(points.at(0));
for (int i = 0; i < points.size() - 1; i++) {
const QPointF& point = points.at(i + 1);
splinePath.cubicTo(controlPoints[2*i],controlPoints[2 * i + 1],point);
}
prepareGeometryChange();
m_path = splinePath;
m_rect = splinePath.boundingRect();
XYChartItem::setLayout(points);
m_controlPoints=controlPoints;
}
//handlers
void SplineChartItem::handleUpdated()
{
m_pointsVisible = m_series->pointsVisible();
m_linePen = m_series->pen();
m_pointPen = m_series->pen();
m_pointPen.setWidthF(2*m_pointPen.width());
update();
}
//painter
void SplineChartItem::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget)
{
Q_UNUSED(widget)
Q_UNUSED(option)
qDebug()<<__FUNCTION__;
painter->save();
painter->setClipRect(clipRect());
painter->setPen(m_linePen);
painter->drawPath(m_path);
if (m_pointsVisible) {
painter->setPen(m_pointPen);
painter->drawPoints(points());
}
painter->restore();
}
#include "moc_splinechartitem_p.cpp"
QTCOMMERCIALCHART_END_NAMESPACE
|
