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Fixes zoomline chart example
Michal Klocek -
r226:538ea0469912
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@@ -1,63 +1,63
1 #include "chartwidget.h"
1 #include "chartwidget.h"
2 #include <QMouseEvent>
2 #include <QMouseEvent>
3
3
4 ChartWidget::ChartWidget(QWidget *parent)
4 ChartWidget::ChartWidget(QWidget *parent)
5 : QChartView(parent),
5 : QChartView(parent),
6 m_rubberBand(QRubberBand::Rectangle,this)
6 m_rubberBand(QRubberBand::Rectangle,this)
7 {
7 {
8 }
8 }
9
9
10 void ChartWidget::mousePressEvent(QMouseEvent *event)
10 void ChartWidget::mousePressEvent(QMouseEvent *event)
11 {
11 {
12 if(event->button()!=Qt::LeftButton) return;
12 if(event->button()!=Qt::LeftButton) return;
13
13
14 int margin = this->margin();
14 int margin = this->margin();
15
15
16 QRect rect(margin,margin,width()-2*margin,height()-2*margin);
16 QRect rect(margin,margin,width()-2*margin,height()-2*margin);
17
17
18 m_origin = event->pos();
18 m_origin = event->pos();
19
19
20 if (!rect.contains(m_origin)) return;
20 if (!rect.contains(m_origin)) return;
21
21
22 m_rubberBand.setGeometry(QRect(m_origin, QSize()));
22 m_rubberBand.setGeometry(QRect(m_origin, QSize()));
23 m_rubberBand.show();
23 m_rubberBand.show();
24
24
25 event->accept();
25 event->accept();
26 }
26 }
27
27
28 void ChartWidget::mouseMoveEvent(QMouseEvent *event)
28 void ChartWidget::mouseMoveEvent(QMouseEvent *event)
29 {
29 {
30 if(m_rubberBand.isVisible())
30 if(m_rubberBand.isVisible())
31 m_rubberBand.setGeometry(QRect(m_origin, event->pos()).normalized());
31 m_rubberBand.setGeometry(QRect(m_origin, event->pos()).normalized());
32 }
32 }
33
33
34 void ChartWidget::mouseReleaseEvent(QMouseEvent *event)
34 void ChartWidget::mouseReleaseEvent(QMouseEvent *event)
35 {
35 {
36 if( event->button()==Qt::LeftButton && m_rubberBand.isVisible()) {
36 if( event->button()==Qt::LeftButton && m_rubberBand.isVisible()) {
37 m_rubberBand.hide();
37 m_rubberBand.hide();
38
38
39 QRect rect = m_rubberBand.geometry();
39 QRect rect = m_rubberBand.geometry();
40 zoomInToRect(rect);
40 zoomIn(rect);
41 event->accept();
41 event->accept();
42 }
42 }
43
43
44 if(event->button()==Qt::RightButton) {
44 if(event->button()==Qt::RightButton) {
45 zoomOut();
45 zoomOut();
46 }
46 }
47 }
47 }
48
48
49
49
50 void ChartWidget::keyPressEvent(QKeyEvent *event)
50 void ChartWidget::keyPressEvent(QKeyEvent *event)
51 {
51 {
52 switch (event->key()) {
52 switch (event->key()) {
53 case Qt::Key_Plus:
53 case Qt::Key_Plus:
54 zoomIn();
54 zoomIn();
55 break;
55 break;
56 case Qt::Key_Minus:
56 case Qt::Key_Minus:
57 zoomOut();
57 zoomOut();
58 break;
58 break;
59 default:
59 default:
60 QGraphicsView::keyPressEvent(event);
60 QGraphicsView::keyPressEvent(event);
61 break;
61 break;
62 }
62 }
63 }
63 }
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