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authorTitta Heikkala <titta.heikkala@digia.com>2014-07-01 07:10:00 +0300
committerTitta Heikkala <titta.heikkala@theqtcompany.com>2014-10-14 13:04:52 +0300
commitc544258484ff4fd5d2b88402fbaa5d154b89a3a2 (patch)
tree7659625abb566dec55d3783ed820b928542d9b2b /examples/charts/qmloscilloscope/datasource.cpp
parent76339f714f088645e911cee65bdb66055fe029aa (diff)
Qt Charts project file structure change
Charts repository structure is changed to follow the structure of a Qt Add-On module. The task includes following changes: - All macros and definitions named 'commercial' have been renamed. - Compile errors related to QString and qSort usage have been fixed. - Old demos are moved under examples. The QML examples now support only Qt Quick 2.0, the support for Qt Quick 1 is removed. - The QML examples with multiple views are updated so that they are usable also with touch devices. - Unnecessary version checks are removed from examples. - The build stamp has been removed as it was only meant for Charts development purposes and it's no longer needed. Also development build related debug prints are removed as __DATE__ can't be used for all OS thus it doesn't make much sense. - Documentation structure has been updated based on the new module structure. The raw HTML files have been removed. Demos are combined to examples. - Unnecessary .qdocinc files are no longer needed. The content is moved to the corresponding .cpp files. - The Charts widget designer plugin is updated according to the module change. - The test cases updated according to the project structure change. Tests are added also for version 2.0. - cmake modules generation is not needed with Qt 5.4 and Qt Charts so it's disabled. - The new module name and version are updated to the plugin.qmltypes file. Task-number: QTRD-2844, QTRD-3217, QTRD-3218, QTRD-3277, QTRD-3228, QTRD-2526, QTRD-3233, QTRD-3222 Change-Id: Ib7fb26057cde710ffaf6bc780c8bf52a16f45160 Reviewed-by: Miikka Heikkinen <miikka.heikkinen@theqtcompany.com>
Diffstat (limited to 'examples/charts/qmloscilloscope/datasource.cpp')
-rw-r--r--examples/charts/qmloscilloscope/datasource.cpp91
1 files changed, 91 insertions, 0 deletions
diff --git a/examples/charts/qmloscilloscope/datasource.cpp b/examples/charts/qmloscilloscope/datasource.cpp
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+++ b/examples/charts/qmloscilloscope/datasource.cpp
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+/****************************************************************************
+**
+** Copyright (C) 2014 Digia Plc
+** All rights reserved.
+** For any questions to Digia, please use contact form at http://qt.digia.com
+**
+** This file is part of the Qt Enterprise Charts Add-on.
+**
+** $QT_BEGIN_LICENSE$
+** Licensees holding valid Qt Enterprise licenses may use this file in
+** accordance with the Qt Enterprise License Agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and Digia.
+**
+** If you have questions regarding the use of this file, please use
+** contact form at http://qt.digia.com
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "datasource.h"
+#include <QXYSeries>
+#include <QAreaSeries>
+#include <QtQuick/QQuickView>
+#include <QtQuick/QQuickItem>
+#include <QDebug>
+#include <qmath.h>
+
+QT_CHARTS_USE_NAMESPACE
+
+Q_DECLARE_METATYPE(QAbstractSeries *)
+Q_DECLARE_METATYPE(QAbstractAxis *)
+
+DataSource::DataSource(QQuickView *appViewer, QObject *parent) :
+ QObject(parent),
+ m_appViewer(appViewer),
+ m_index(-1)
+{
+ qRegisterMetaType<QAbstractSeries*>();
+ qRegisterMetaType<QAbstractAxis*>();
+
+ generateData(0, 5, 1024);
+}
+
+void DataSource::update(QAbstractSeries *series)
+{
+ if (series) {
+ QXYSeries *xySeries = static_cast<QXYSeries *>(series);
+ m_index++;
+ if (m_index > m_data.count() - 1)
+ m_index = 0;
+
+ QList<QPointF> points = m_data.at(m_index);
+ // Use replace instead of clear + append, it's optimized for performance
+ xySeries->replace(points);
+ }
+}
+
+void DataSource::generateData(int type, int rowCount, int colCount)
+{
+ // Remove previous data
+ foreach (QList<QPointF> row, m_data)
+ row.clear();
+ m_data.clear();
+
+ // Append the new data depending on the type
+ for (int i(0); i < rowCount; i++) {
+ QList<QPointF> points;
+ for (int j(0); j < colCount; j++) {
+ qreal x(0);
+ qreal y(0);
+ switch (type) {
+ case 0:
+ // data with sin + random component
+ y = qSin(3.14159265358979 / 50 * j) + 0.5 + (qreal) rand() / (qreal) RAND_MAX;
+ x = j;
+ break;
+ case 1:
+ // linear data
+ x = j;
+ y = (qreal) i / 10;
+ break;
+ default:
+ // unknown, do nothing
+ break;
+ }
+ points.append(QPointF(x, y));
+ }
+ m_data.append(points);
+ }
+}