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Fix last post remove in qlineseries
Michal Klocek -
r1269:56c7db037465
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1 1 /****************************************************************************
2 2 **
3 3 ** Copyright (C) 2012 Digia Plc
4 4 ** All rights reserved.
5 5 ** For any questions to Digia, please use contact form at http://qt.digia.com
6 6 **
7 7 ** This file is part of the Qt Commercial Charts Add-on.
8 8 **
9 9 ** $QT_BEGIN_LICENSE$
10 10 ** Licensees holding valid Qt Commercial licenses may use this file in
11 11 ** accordance with the Qt Commercial License Agreement provided with the
12 12 ** Software or, alternatively, in accordance with the terms contained in
13 13 ** a written agreement between you and Digia.
14 14 **
15 15 ** If you have questions regarding the use of this file, please use
16 16 ** contact form at http://qt.digia.com
17 17 ** $QT_END_LICENSE$
18 18 **
19 19 ****************************************************************************/
20 20
21 21 #include "linechartitem_p.h"
22 22 #include "qlineseries.h"
23 23 #include "qlineseries_p.h"
24 24 #include "chartpresenter_p.h"
25 25 #include <QPainter>
26 26 #include <QGraphicsSceneMouseEvent>
27 27
28 28
29 29 QTCOMMERCIALCHART_BEGIN_NAMESPACE
30 30
31 31 //TODO: optimize : remove points which are not visible
32 32
33 33 LineChartItem::LineChartItem(QLineSeries* series,ChartPresenter *presenter):XYChart(series,presenter),
34 34 QGraphicsItem(presenter ? presenter->rootItem() : 0),
35 35 m_series(series),
36 36 m_pointsVisible(false)
37 37 {
38 38 setZValue(ChartPresenter::LineChartZValue);
39 39 QObject::connect(series->d_func(),SIGNAL(updated()),this,SLOT(handleUpdated()));
40 40 handleUpdated();
41 41 }
42 42
43 43 QRectF LineChartItem::boundingRect() const
44 44 {
45 45 return m_rect;
46 46 }
47 47
48 48 QPainterPath LineChartItem::shape() const
49 49 {
50 50 return m_path;
51 51 }
52 52
53 53 void LineChartItem::updateGeometry()
54 54 {
55 55 const QVector<QPointF>& points = geometryPoints();
56 56
57 57 if(points.size()==0)
58 58 {
59 prepareGeometryChange();
59 60 m_path = QPainterPath();
61 m_rect = QRect();
60 62 return;
61 63 }
62 64
63 65 QPainterPath linePath(points.at(0));
64 66
65 67 for(int i=1; i< points.size();i++) {
66 68 linePath.lineTo(points.at(i));
67 69 }
68 70
69 71 prepareGeometryChange();
70 72 m_path = linePath;
71 73 m_rect = linePath.boundingRect();
72 74 setPos(origin());
73 75 }
74 76
75 77 void LineChartItem::handleUpdated()
76 78 {
77 79 m_pointsVisible = m_series->pointsVisible();
78 80 m_linePen = m_series->pen();
79 81 m_pointPen = m_series->pen();
80 82 m_pointPen.setWidthF(2*m_pointPen.width());
81 83 update();
82 84 }
83 85
84 86 //painter
85 87
86 88 void LineChartItem::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget)
87 89 {
88 90 Q_UNUSED(widget)
89 91 Q_UNUSED(option)
90 92
91 93 painter->save();
92 94 painter->setPen(m_linePen);
93 95 painter->setClipRect(clipRect());
94 96 painter->drawPath(m_path);
95 97 if(m_pointsVisible){
96 98 painter->setPen(m_pointPen);
97 99 painter->drawPoints(geometryPoints());
98 100 }
99 101 painter->restore();
100 102 }
101 103
102 104 void LineChartItem::mousePressEvent(QGraphicsSceneMouseEvent *event)
103 105 {
104 106 emit XYChart::clicked(calculateDomainPoint(event->pos()));
105 107 }
106 108
107 109 #include "moc_linechartitem_p.cpp"
108 110
109 111 QTCOMMERCIALCHART_END_NAMESPACE
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