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1 | /**************************************************************************** |
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1 | /**************************************************************************** | |
2 | ** |
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2 | ** | |
3 | ** Copyright (C) 2013 Digia Plc |
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3 | ** Copyright (C) 2013 Digia Plc | |
4 | ** All rights reserved. |
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4 | ** All rights reserved. | |
5 | ** For any questions to Digia, please use contact form at http://qt.digia.com |
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5 | ** For any questions to Digia, please use contact form at http://qt.digia.com | |
6 | ** |
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6 | ** | |
7 | ** This file is part of the Qt Enterprise Charts Add-on. |
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7 | ** This file is part of the Qt Enterprise Charts Add-on. | |
8 | ** |
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8 | ** | |
9 | ** $QT_BEGIN_LICENSE$ |
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9 | ** $QT_BEGIN_LICENSE$ | |
10 | ** Licensees holding valid Qt Enterprise licenses may use this file in |
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10 | ** Licensees holding valid Qt Enterprise licenses may use this file in | |
11 | ** accordance with the Qt Enterprise License Agreement provided with the |
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11 | ** accordance with the Qt Enterprise License Agreement provided with the | |
12 | ** Software or, alternatively, in accordance with the terms contained in |
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12 | ** Software or, alternatively, in accordance with the terms contained in | |
13 | ** a written agreement between you and Digia. |
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13 | ** a written agreement between you and Digia. | |
14 | ** |
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14 | ** | |
15 | ** If you have questions regarding the use of this file, please use |
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15 | ** If you have questions regarding the use of this file, please use | |
16 | ** contact form at http://qt.digia.com |
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16 | ** contact form at http://qt.digia.com | |
17 | ** $QT_END_LICENSE$ |
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17 | ** $QT_END_LICENSE$ | |
18 | ** |
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18 | ** | |
19 | ****************************************************************************/ |
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19 | ****************************************************************************/ | |
20 |
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20 | |||
21 | #include "chart.h" |
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21 | #include "chart.h" | |
22 | #include <QGesture> |
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22 | #include <QGesture> | |
23 | #include <QGraphicsScene> |
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23 | #include <QGraphicsScene> | |
24 | #include <QGraphicsView> |
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24 | #include <QGraphicsView> | |
25 |
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25 | |||
26 | Chart::Chart(QGraphicsItem *parent, Qt::WindowFlags wFlags) |
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26 | Chart::Chart(QGraphicsItem *parent, Qt::WindowFlags wFlags) | |
27 | : QChart(QChart::ChartTypeCartesian, parent, wFlags) |
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27 | : QChart(QChart::ChartTypeCartesian, parent, wFlags) | |
28 | { |
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28 | { | |
29 | // Seems that QGraphicsView (QChartView) does not grab gestures. |
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29 | // Seems that QGraphicsView (QChartView) does not grab gestures. | |
30 | // They can only be grabbed here in the QGraphicsWidget (QChart). |
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30 | // They can only be grabbed here in the QGraphicsWidget (QChart). | |
31 | grabGesture(Qt::PanGesture); |
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31 | grabGesture(Qt::PanGesture); | |
32 | grabGesture(Qt::PinchGesture); |
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32 | grabGesture(Qt::PinchGesture); | |
33 | } |
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33 | } | |
34 |
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34 | |||
35 | Chart::~Chart() |
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35 | Chart::~Chart() | |
36 | { |
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36 | { | |
37 |
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37 | |||
38 | } |
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38 | } | |
39 |
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39 | |||
40 | //![1] |
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40 | //![1] | |
41 | bool Chart::sceneEvent(QEvent *event) |
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41 | bool Chart::sceneEvent(QEvent *event) | |
42 | { |
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42 | { | |
43 | if (event->type() == QEvent::Gesture) |
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43 | if (event->type() == QEvent::Gesture) | |
44 | return gestureEvent(static_cast<QGestureEvent *>(event)); |
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44 | return gestureEvent(static_cast<QGestureEvent *>(event)); | |
45 | return QChart::event(event); |
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45 | return QChart::event(event); | |
46 | } |
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46 | } | |
47 |
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47 | |||
48 | bool Chart::gestureEvent(QGestureEvent *event) |
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48 | bool Chart::gestureEvent(QGestureEvent *event) | |
49 | { |
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49 | { | |
50 | if (QGesture *gesture = event->gesture(Qt::PanGesture)) { |
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50 | if (QGesture *gesture = event->gesture(Qt::PanGesture)) { | |
51 | QPanGesture *pan = static_cast<QPanGesture *>(gesture); |
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51 | QPanGesture *pan = static_cast<QPanGesture *>(gesture); | |
52 | QChart::scroll(pan->delta().x(), pan->delta().y()); |
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52 | QChart::scroll(-(pan->delta().x()), pan->delta().y()); | |
53 | } |
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53 | } | |
54 |
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54 | |||
55 | if (QGesture *gesture = event->gesture(Qt::PinchGesture)) { |
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55 | if (QGesture *gesture = event->gesture(Qt::PinchGesture)) { | |
56 | QPinchGesture *pinch = static_cast<QPinchGesture *>(gesture); |
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56 | QPinchGesture *pinch = static_cast<QPinchGesture *>(gesture); | |
57 | if (pinch->changeFlags() & QPinchGesture::ScaleFactorChanged) |
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57 | if (pinch->changeFlags() & QPinchGesture::ScaleFactorChanged) | |
58 | QChart::zoom(pinch->scaleFactor()); |
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58 | QChart::zoom(pinch->scaleFactor()); | |
59 | } |
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59 | } | |
60 |
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60 | |||
61 | return true; |
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61 | return true; | |
62 | } |
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62 | } | |
63 | //![1] |
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63 | //![1] |
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