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Improved oscilloscope demo functionality
Tero Ahola -
r1785:bb11155e67e1
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1 /****************************************************************************
2 **
3 ** Copyright (C) 2012 Digia Plc
4 ** All rights reserved.
5 ** For any questions to Digia, please use contact form at http://qt.digia.com
6 **
7 ** This file is part of the Qt Commercial Charts Add-on.
8 **
9 ** $QT_BEGIN_LICENSE$
10 ** Licensees holding valid Qt Commercial licenses may use this file in
11 ** accordance with the Qt Commercial License Agreement provided with the
12 ** Software or, alternatively, in accordance with the terms contained in
13 ** a written agreement between you and Digia.
14 **
15 ** If you have questions regarding the use of this file, please use
16 ** contact form at http://qt.digia.com
17 ** $QT_END_LICENSE$
18 **
19 ****************************************************************************/
20
21 import QtQuick 1.0
22
23 Column {
24 spacing: 5
25 signal openGLEnabled(bool enabled)
26 signal animationsEnabled(bool enabled)
27 signal seriesTypeChanged(string type)
28 signal refreshRateChanged(variant rate);
29 signal signalSourceChanged(string source, int signalCount, int sampleCount);
30
31 Text {
32 text: "Oscilloscope"
33 font.pointSize: 18
34 }
35
36 MultiButton {
37 id: signalSourceButton
38 text: "Signal source: "
39 items: ["sin", "linear"]
40 currentSelection: 0
41 onSelectionChanged: signalSourceChanged(
42 selection,
43 5,
44 sampleCountButton.items[sampleCountButton.currentSelection]);
45 }
46
47 MultiButton {
48 id: sampleCountButton
49 text: "Samples: "
50 items: [6, 128, 1024, 10000]
51 currentSelection: 2
52 onSelectionChanged: signalSourceChanged(
53 signalSourceButton.items[signalSourceButton.currentSelection],
54 5,
55 selection);
56 }
57
58 MultiButton {
59 text: "Graph: "
60 items: ["line", "spline", "scatter"]
61 currentSelection: 0
62 onSelectionChanged: seriesTypeChanged(items[currentSelection]);
63 }
64
65 MultiButton {
66 text: "Refresh rate: "
67 items: [1, 24, 60, 100]
68 currentSelection: 2
69 onSelectionChanged: refreshRateChanged(items[currentSelection]);
70 }
71
72 MultiButton {
73 text: "OpenGL: "
74 items: ["OFF", "ON"]
75 currentSelection: 0
76 onSelectionChanged: openGLEnabled(currentSelection == 1);
77 }
78
79 MultiButton {
80 text: "Animations: "
81 items: ["OFF", "ON"]
82 currentSelection: 0
83 onSelectionChanged: animationsEnabled(currentSelection == 1);
84 }
85 }
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@@ -0,0 +1,47
1 /****************************************************************************
2 **
3 ** Copyright (C) 2012 Digia Plc
4 ** All rights reserved.
5 ** For any questions to Digia, please use contact form at http://qt.digia.com
6 **
7 ** This file is part of the Qt Commercial Charts Add-on.
8 **
9 ** $QT_BEGIN_LICENSE$
10 ** Licensees holding valid Qt Commercial licenses may use this file in
11 ** accordance with the Qt Commercial License Agreement provided with the
12 ** Software or, alternatively, in accordance with the terms contained in
13 ** a written agreement between you and Digia.
14 **
15 ** If you have questions regarding the use of this file, please use
16 ** contact form at http://qt.digia.com
17 ** $QT_END_LICENSE$
18 **
19 ****************************************************************************/
20
21 import QtQuick 1.0
22
23 Rectangle {
24 id: button
25 width: 105
26 height: 33
27 border.color: "gray"
28 radius: 5
29 property string text: "Option: "
30 property variant items: ["first"]
31 property int currentSelection: 0
32 signal selectionChanged(variant selection)
33
34 Text {
35 id: buttonText
36 anchors.centerIn: parent
37 text: button.text + button.items[currentSelection]
38 }
39
40 MouseArea {
41 anchors.fill: parent
42 onClicked: {
43 currentSelection = (currentSelection + 1) % items.length;
44 selectionChanged(button.items[currentSelection]);
45 }
46 }
47 }
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@@ -0,0 +1,98
1 /****************************************************************************
2 **
3 ** Copyright (C) 2012 Digia Plc
4 ** All rights reserved.
5 ** For any questions to Digia, please use contact form at http://qt.digia.com
6 **
7 ** This file is part of the Qt Commercial Charts Add-on.
8 **
9 ** $QT_BEGIN_LICENSE$
10 ** Licensees holding valid Qt Commercial licenses may use this file in
11 ** accordance with the Qt Commercial License Agreement provided with the
12 ** Software or, alternatively, in accordance with the terms contained in
13 ** a written agreement between you and Digia.
14 **
15 ** If you have questions regarding the use of this file, please use
16 ** contact form at http://qt.digia.com
17 ** $QT_END_LICENSE$
18 **
19 ****************************************************************************/
20
21 import QtQuick 1.0
22 import QtCommercial.Chart 1.0
23
24 ChartView {
25 id: chartView
26 animationOptions: ChartView.NoAnimation
27
28 ValuesAxis {
29 id: axisY
30 min: -1
31 max: 3
32 }
33
34 ValuesAxis {
35 id: axisX
36 min: 0
37 max: 1000
38 }
39
40 LineSeries {
41 id: lineSeries1
42 name: "signal 1"
43 }
44 LineSeries {
45 id: lineSeries2
46 name: "signal 2"
47 }
48
49 Component.onCompleted: {
50 chartView.setAxisX(axisX, lineSeries1);
51 chartView.setAxisY(axisY, lineSeries1);
52 chartView.setAxisX(axisX, lineSeries2);
53 chartView.setAxisY(axisY, lineSeries2);
54 }
55
56 Timer {
57 id: refreshTimer
58 interval: 1 / 60 * 1000 // 60 Hz
59 running: true
60 repeat: true
61 onTriggered: {
62 dataSource.update(chartView.series(0));
63 dataSource.update(chartView.series(1));
64 }
65 }
66
67 function changeSeriesType(type) {
68 chartView.series(1).destroy();
69 chartView.series(0).destroy();
70 var seriesCount = 2;
71 for (var i = 0; i < seriesCount; i++) {
72 var series;
73 if (type == "line") {
74 series = scopeView.createSeries(ChartView.SeriesTypeLine, "signal " + (i + 1));
75 } else if (type == "spline") {
76 series = chartView.createSeries(ChartView.SeriesTypeSpline, "signal " + (i + 1));
77 } else {
78 series = chartView.createSeries(ChartView.SeriesTypeScatter, "signal " + (i + 1));
79 series.markerSize = 3;
80 series.borderColor = "transparent";
81 }
82 chartView.setAxisX(axisX, series);
83 chartView.setAxisY(axisY, series);
84 }
85 }
86
87 function setAnimations(enabled) {
88 if (enabled)
89 scopeView.animationOptions = ChartView.SeriesAnimations;
90 else
91 scopeView.animationOptions = ChartView.NoAnimation;
92 }
93
94 function changeRefreshRate(rate) {
95 console.log("rate " + rate);
96 refreshTimer.interval = 1 / Number(rate) * 1000;
97 }
98 }
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@@ -20,36 +20,76
20 20
21 21 #include "datasource.h"
22 22 #include <QXYSeries>
23 #include <QAreaSeries>
24 #include <QAbstractScrollArea>
25 #include <QGLWidget>
23 26 #include <QDebug>
24 27
25 28 QTCOMMERCIALCHART_USE_NAMESPACE
26 29
27 DataSource::DataSource(QObject *parent) :
30 DataSource::DataSource(QAbstractScrollArea *appViewer, QObject *parent) :
31 m_appViewer(appViewer),
28 32 QObject(parent),
29 m_index(0)
33 m_index(-1)
30 34 {
31 const int rowCount = 5;
32 const int colCount = 1024;
35 // generate
36 generateData(0, 5, 1024);
37 }
38
39 void DataSource::update(QAbstractSeries *series)
40 {
41 QXYSeries *xySeries = qobject_cast<QXYSeries *>(series);
42 Q_ASSERT(xySeries);
43
44 m_index++;
45 if (m_index > m_data.count() - 1)
46 m_index = 0;
47
48 QList<QPointF> points = m_data.at(m_index);
49 // Use replace instead of clear + append, it's optimized for performance
50 xySeries->replace(points);
51 }
52
53 void DataSource::generateData(int type, int rowCount, int colCount)
54 {
55 qDebug() << "DataSource::generateData:" << type << rowCount << colCount;
33 56
57 // Remove previous data
58 foreach (QList<QPointF> row, m_data)
59 row.clear();
60 m_data.clear();
61
62 // Append the new data depending on the type
34 63 for (int i(0); i < rowCount; i++) {
35 64 QList<QPointF> points;
36 65 for (int j(0); j < colCount; j++) {
37 qreal x = j;
38 qreal y = sin(3.14159265358979 / 50 * x) + 0.5 + (qreal) rand() / (qreal) RAND_MAX;
66 qreal x(0);
67 qreal y(0);
68 switch (type) {
69 case 0:
70 // data with sin + random component
71 y = sin(3.14159265358979 / 50 * j) + 0.5 + (qreal) rand() / (qreal) RAND_MAX;
72 x = j;
73 break;
74 case 1:
75 // linear data
76 x = j;
77 y = (qreal) i / 10;
78 break;
79 default:
80 // unknown, do nothing
81 break;
82 }
39 83 points.append(QPointF(x, y));
40 84 }
41 85 m_data.append(points);
42 86 }
43 87 }
44 88
45 void DataSource::update(QAbstractSeries *series)
89 void DataSource::setOpenGL(bool enabled)
46 90 {
47 QXYSeries *xySeries = qobject_cast<QXYSeries *>(series);
48 Q_ASSERT(xySeries);
49
50 QList<QPointF> points = m_data.at(m_index);
51 //xySeries->clear();
52 //xySeries->append(points);
53 xySeries->replace(points);
54 m_index = (m_index + 1) % m_data.count();
91 if (enabled)
92 m_appViewer->setViewport(new QGLWidget());
93 else
94 m_appViewer->setViewport(0);
55 95 }
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@@ -24,20 +24,25
24 24 #include <QObject>
25 25 #include <QAbstractSeries>
26 26
27 class QAbstractScrollArea;
28
27 29 QTCOMMERCIALCHART_USE_NAMESPACE
28 30
29 31 class DataSource : public QObject
30 32 {
31 33 Q_OBJECT
32 34 public:
33 explicit DataSource(QObject *parent = 0);
35 explicit DataSource(QAbstractScrollArea *appViewer, QObject *parent = 0);
34 36
35 37 signals:
36 38
37 39 public slots:
40 void generateData(int type, int rowCount, int colCount);
38 41 void update(QAbstractSeries *series);
42 void setOpenGL(bool enabled);
39 43
40 44 private:
45 QAbstractScrollArea *m_appViewer;
41 46 QList<QList<QPointF> > m_data;
42 47 int m_index;
43 48 };
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@@ -21,7 +21,6
21 21 #include <QtGui/QApplication>
22 22 #include <QDeclarativeEngine>
23 23 #include <QDeclarativeContext>
24 #include <QGLWidget>
25 24 #include "qmlapplicationviewer.h"
26 25 #include "datasource.h"
27 26
@@ -30,12 +29,11 Q_DECL_EXPORT int main(int argc, char *argv[])
30 29 QScopedPointer<QApplication> app(createApplication(argc, argv));
31 30 QScopedPointer<QmlApplicationViewer> viewer(QmlApplicationViewer::create());
32 31
33 DataSource dataSource;
32 DataSource dataSource(viewer.data());
34 33 viewer->rootContext()->setContextProperty("dataSource", &dataSource);
35 34
36 35 viewer->setOrientation(QmlApplicationViewer::ScreenOrientationAuto);
37 36 viewer->setSource(QUrl("qrc:/qml/qmloscilloscope/main.qml"));
38 viewer->setViewport(new QGLWidget());
39 37 viewer->showExpanded();
40 38
41 39 return app->exec();
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@@ -19,54 +19,38
19 19 ****************************************************************************/
20 20
21 21 import QtQuick 1.0
22 import QtCommercial.Chart 1.0
23 22
24 23 Rectangle {
24 id: main
25 25 width: 400
26 26 height: 300
27 27
28 ChartView {
29 id: chartView
30 anchors.fill: parent
31 title: "Oscilloscope"
32 animationOptions: ChartView.NoAnimation
33
34 ValuesAxis {
35 id: axisY
36 min: -1
37 max: 3
38 }
39
40 ValuesAxis {
41 id: axisX
42 min: 0
43 max: 1000
44 }
45
46 LineSeries {
47 id: lineSeries1
48 name: "signal 1"
49 }
50 LineSeries {
51 id: lineSeries2
52 name: "signal 2"
53 }
54 }
55
56 Timer {
57 interval: 16 // 60 Hz
58 running: true
59 repeat: true
60 onTriggered: {
61 dataSource.update(lineSeries1);
62 dataSource.update(lineSeries2);
28 ControlPanel {
29 id: controlPanel
30 anchors.top: parent.top
31 anchors.topMargin: 10
32 anchors.bottom: parent.bottom
33 anchors.left: parent.left
34 anchors.leftMargin: 10
35
36 onSignalSourceChanged: {
37 if (source == "sin")
38 dataSource.generateData(0, signalCount, sampleCount);
39 else
40 dataSource.generateData(1, signalCount, sampleCount);
63 41 }
42 onOpenGLEnabled: dataSource.setOpenGL(enabled);
43 onAnimationsEnabled: scopeView.setAnimations(enabled);
44 onSeriesTypeChanged: scopeView.changeSeriesType(type);
45 onRefreshRateChanged: scopeView.changeRefreshRate(rate);
64 46 }
65 47
66 Component.onCompleted: {
67 chartView.setAxisX(axisX, lineSeries1);
68 chartView.setAxisY(axisY, lineSeries1);
69 chartView.setAxisX(axisX, lineSeries2);
70 chartView.setAxisY(axisY, lineSeries2);
48 ScopeView {
49 id: scopeView
50 anchors.top: parent.top
51 anchors.bottom: parent.bottom
52 anchors.right: parent.right
53 anchors.left: controlPanel.right
54 height: main.height
71 55 }
72 56 }
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@@ -1,5 +1,8
1 1 <RCC>
2 2 <qresource prefix="/">
3 3 <file>qml/qmloscilloscope/main.qml</file>
4 <file>qml/qmloscilloscope/ControlPanel.qml</file>
5 <file>qml/qmloscilloscope/ScopeView.qml</file>
6 <file>qml/qmloscilloscope/MultiButton.qml</file>
4 7 </qresource>
5 8 </RCC>
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