| @@ -1,130 +1,134 | |||
|
|
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 | QTCOMMERCIALCHART_BEGIN_NAMESPACE |
|
|
29 | 29 | |
|
|
30 | 30 | const qreal mouseEventMinWidth(12); |
|
|
31 | 31 | |
|
|
32 | 32 | LineChartItem::LineChartItem(QLineSeries* series,ChartPresenter *presenter): |
|
|
33 | 33 | 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 | QObject::connect(series, SIGNAL(visibleChanged()), this, SLOT(handleUpdated())); |
|
|
41 | 41 | handleUpdated(); |
|
|
42 | 42 | } |
|
|
43 | 43 | |
|
|
44 | 44 | QRectF LineChartItem::boundingRect() const |
|
|
45 | 45 | { |
|
|
46 | 46 | return m_rect; |
|
|
47 | 47 | } |
|
|
48 | 48 | |
|
|
49 | 49 | QPainterPath LineChartItem::shape() const |
|
|
50 | 50 | { |
|
|
51 | 51 | return m_path; |
|
|
52 | 52 | } |
|
|
53 | 53 | |
|
|
54 | 54 | void LineChartItem::updateGeometry() |
|
|
55 | 55 | { |
|
|
56 | 56 | m_points = geometryPoints(); |
|
|
57 | 57 | |
|
|
58 | 58 | if(m_points.size()==0) |
|
|
59 | 59 | { |
|
|
60 | 60 | prepareGeometryChange(); |
|
|
61 | 61 | m_path = QPainterPath(); |
|
|
62 | 62 | m_rect = QRect(); |
|
|
63 | 63 | return; |
|
|
64 | 64 | } |
|
|
65 | 65 | |
|
|
66 | 66 | QPainterPath linePath(m_points.at(0)); |
|
|
67 | 67 | |
|
|
68 | 68 | if(m_pointsVisible) { |
|
|
69 | 69 | |
|
|
70 | 70 | int size = m_linePen.width(); |
|
|
71 | 71 | linePath.addEllipse(m_points.at(0),size,size); |
|
|
72 | 72 | for(int i=1; i< m_points.size();i++) { |
|
|
73 | 73 | linePath.lineTo(m_points.at(i)); |
|
|
74 | 74 | linePath.addEllipse(m_points.at(i),size,size); |
|
|
75 | 75 | } |
|
|
76 | 76 | |
|
|
77 | 77 | } else { |
|
|
78 | 78 | |
|
|
79 | 79 | for(int i=1; i< m_points.size();i++) { |
|
|
80 | 80 | linePath.lineTo(m_points.at(i)); |
|
|
81 | 81 | } |
|
|
82 | 82 | } |
|
|
83 | 83 | |
|
|
84 | 84 | m_linePath=linePath; |
|
|
85 | 85 | QPainterPathStroker stroker; |
|
|
86 | stroker.setWidth(m_linePen.width()); | |
|
|
86 | stroker.setWidth(m_linePen.width()*1.42); | |
|
|
87 | stroker.setJoinStyle(m_linePen.joinStyle()); | |
|
|
88 | stroker.setCapStyle(m_linePen.capStyle()); | |
|
|
89 | stroker.setMiterLimit(m_linePen.miterLimit()); | |
|
|
87 | 90 | |
|
|
88 | 91 | prepareGeometryChange(); |
|
|
89 | 92 | |
|
|
90 | 93 | m_path = stroker.createStroke(linePath); |
|
|
91 | 94 | m_rect = m_path.boundingRect(); |
|
|
92 | 95 | |
|
|
93 | 96 | setPos(origin()); |
|
|
94 | 97 | } |
|
|
95 | 98 | |
|
|
96 | 99 | void LineChartItem::handleUpdated() |
|
|
97 | 100 | { |
|
|
98 | 101 | setVisible(m_series->isVisible()); |
|
|
99 | 102 | m_pointsVisible = m_series->pointsVisible(); |
|
|
100 | 103 | m_linePen = m_series->pen(); |
|
|
101 | 104 | update(); |
|
|
102 | 105 | } |
|
|
103 | 106 | |
|
|
104 | 107 | void LineChartItem::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget) |
|
|
105 | 108 | { |
|
|
106 | 109 | Q_UNUSED(widget) |
|
|
107 | 110 | Q_UNUSED(option) |
|
|
108 | 111 | |
|
|
109 | 112 | painter->setPen(m_linePen); |
|
|
113 | ||
|
|
110 | 114 | painter->setBrush(m_linePen.color()); |
|
|
111 | 115 | painter->setClipRect(clipRect()); |
|
|
112 | 116 | |
|
|
113 | 117 | if (m_pointsVisible) { |
|
|
114 | 118 | painter->drawPath(m_linePath); |
|
|
115 | 119 | } |
|
|
116 | 120 | else { |
|
|
117 | 121 | for (int i(1); i < m_points.size();i++) |
|
|
118 | 122 | painter->drawLine(m_points.at(i-1), m_points.at(i)); |
|
|
119 | 123 | } |
|
|
120 | 124 | } |
|
|
121 | 125 | |
|
|
122 | 126 | void LineChartItem::mousePressEvent(QGraphicsSceneMouseEvent *event) |
|
|
123 | 127 | { |
|
|
124 | 128 | emit XYChart::clicked(calculateDomainPoint(event->pos())); |
|
|
125 | 129 | QGraphicsItem::mousePressEvent(event); |
|
|
126 | 130 | } |
|
|
127 | 131 | |
|
|
128 | 132 | #include "moc_linechartitem_p.cpp" |
|
|
129 | 133 | |
|
|
130 | 134 | QTCOMMERCIALCHART_END_NAMESPACE |
General Comments 0
You need to be logged in to leave comments.
Login now