main.cpp
167 lines
| 5.5 KiB
| text/x-c
|
CppLexer
Miikka Heikkinen
|
r2820 | /**************************************************************************** | ||
| ** | ||||
| ** Copyright (C) 2015 The Qt Company Ltd | ||||
| ** All rights reserved. | ||||
| ** For any questions to The Qt Company, please use contact form at http://qt.io | ||||
| ** | ||||
| ** This file is part of the Qt Charts module. | ||||
| ** | ||||
| ** Licensees holding valid commercial license for Qt may use this file in | ||||
| ** accordance with the Qt License Agreement provided with the Software | ||||
| ** or, alternatively, in accordance with the terms contained in a written | ||||
| ** agreement between you and The Qt Company. | ||||
| ** | ||||
| ** If you have questions regarding the use of this file, please use | ||||
| ** contact form at http://qt.io | ||||
| ** | ||||
| ****************************************************************************/ | ||||
| #include "datasource.h" | ||||
| #include <QtWidgets/QApplication> | ||||
| #include <QtWidgets/QMainWindow> | ||||
| #include <QtCharts/QChartView> | ||||
| #include <QtCharts/QLineSeries> | ||||
| #include <QtCharts/QScatterSeries> | ||||
| #include <QtCharts/QValueAxis> | ||||
| #include <QtCharts/QLogValueAxis> | ||||
| #include <QtWidgets/QLabel> | ||||
| // Uncomment to use logarithmic axes instead of regular value axes | ||||
| //#define USE_LOG_AXIS | ||||
| // Uncomment to use regular series instead of OpenGL accelerated series | ||||
| //#define DONT_USE_GL_SERIES | ||||
| // Uncomment to add a simple regular series (thick line) and a matching OpenGL series (thinner line) | ||||
| // to verify the series have same visible geometry. | ||||
| //#define ADD_SIMPLE_SERIES | ||||
| QT_CHARTS_USE_NAMESPACE | ||||
| int main(int argc, char *argv[]) | ||||
| { | ||||
| QApplication a(argc, argv); | ||||
| QStringList colors; | ||||
| colors << "red" << "blue" << "green" << "black"; | ||||
| QChart *chart = new QChart(); | ||||
| chart->legend()->hide(); | ||||
| #ifdef USE_LOG_AXIS | ||||
| QLogValueAxis *axisX = new QLogValueAxis; | ||||
| QLogValueAxis *axisY = new QLogValueAxis; | ||||
| #else | ||||
| QValueAxis *axisX = new QValueAxis; | ||||
| QValueAxis *axisY = new QValueAxis; | ||||
| #endif | ||||
| chart->addAxis(axisX, Qt::AlignBottom); | ||||
| chart->addAxis(axisY, Qt::AlignLeft); | ||||
| const int seriesCount = 10; | ||||
| #ifdef DONT_USE_GL_SERIES | ||||
| const int pointCount = 100; | ||||
| chart->setTitle("Unaccelerated Series"); | ||||
| #else | ||||
| const int pointCount = 10000; | ||||
| chart->setTitle("OpenGL Accelerated Series"); | ||||
| #endif | ||||
| QList<QXYSeries *> seriesList; | ||||
| for (int i = 0; i < seriesCount; i++) { | ||||
| QXYSeries *series = 0; | ||||
| int colorIndex = i % colors.size(); | ||||
| if (i % 2) { | ||||
| series = new QScatterSeries; | ||||
| QScatterSeries *scatter = static_cast<QScatterSeries *>(series); | ||||
| scatter->setColor(QColor(colors.at(colorIndex))); | ||||
| scatter->setMarkerSize(qreal(colorIndex + 2) / 2.0); | ||||
| // Scatter pen doesn't have affect in OpenGL drawing, but if you disable OpenGL drawing | ||||
| // this makes the marker border visible and gives comparable marker size to OpenGL | ||||
| // scatter points. | ||||
| scatter->setPen(QPen("black")); | ||||
| } else { | ||||
| series = new QLineSeries; | ||||
| series->setPen(QPen(QBrush(QColor(colors.at(colorIndex))), | ||||
| qreal(colorIndex + 2) / 2.0)); | ||||
| } | ||||
| seriesList.append(series); | ||||
| #ifdef DONT_USE_GL_SERIES | ||||
| series->setUseOpenGL(false); | ||||
| #else | ||||
| //![1] | ||||
| series->setUseOpenGL(true); | ||||
| //![1] | ||||
| #endif | ||||
| chart->addSeries(series); | ||||
| series->attachAxis(axisX); | ||||
| series->attachAxis(axisY); | ||||
| } | ||||
| if (axisX->type() == QAbstractAxis::AxisTypeLogValue) | ||||
| axisX->setRange(0.1, 20.0); | ||||
| else | ||||
| axisX->setRange(0, 20.0); | ||||
| if (axisY->type() == QAbstractAxis::AxisTypeLogValue) | ||||
| axisY->setRange(0.1, 10.0); | ||||
| else | ||||
| axisY->setRange(0, 10.0); | ||||
| #ifdef ADD_SIMPLE_SERIES | ||||
| QLineSeries *simpleRasterSeries = new QLineSeries; | ||||
| *simpleRasterSeries << QPointF(0.001, 0.001) | ||||
| << QPointF(2.5, 8.0) | ||||
| << QPointF(5.0, 4.0) | ||||
| << QPointF(7.5, 9.0) | ||||
| << QPointF(10.0, 0.001) | ||||
| << QPointF(12.5, 2.0) | ||||
| << QPointF(15.0, 1.0) | ||||
| << QPointF(17.5, 6.0) | ||||
| << QPointF(20.0, 10.0); | ||||
| simpleRasterSeries->setUseOpenGL(false); | ||||
| simpleRasterSeries->setPen(QPen(QBrush("magenta"), 8)); | ||||
| chart->addSeries(simpleRasterSeries); | ||||
| simpleRasterSeries->attachAxis(axisX); | ||||
| simpleRasterSeries->attachAxis(axisY); | ||||
| QLineSeries *simpleGLSeries = new QLineSeries; | ||||
| simpleGLSeries->setUseOpenGL(true); | ||||
| simpleGLSeries->setPen(QPen(QBrush("black"), 2)); | ||||
| simpleGLSeries->replace(simpleRasterSeries->points()); | ||||
| chart->addSeries(simpleGLSeries); | ||||
| simpleGLSeries->attachAxis(axisX); | ||||
| simpleGLSeries->attachAxis(axisY); | ||||
| #endif | ||||
| QChartView *chartView = new QChartView(chart); | ||||
| QMainWindow window; | ||||
| window.setCentralWidget(chartView); | ||||
| window.resize(600, 400); | ||||
| window.show(); | ||||
| DataSource dataSource; | ||||
| dataSource.generateData(seriesCount, 10, pointCount); | ||||
| QLabel *fpsLabel = new QLabel(&window); | ||||
| QLabel *countLabel = new QLabel(&window); | ||||
| QString countText = QStringLiteral("Total point count: %1"); | ||||
| countLabel->setText(countText.arg(pointCount * seriesCount)); | ||||
| countLabel->resize(window.width(), countLabel->height()); | ||||
| fpsLabel->move(10,2); | ||||
| fpsLabel->raise(); | ||||
| fpsLabel->show(); | ||||
| countLabel->move(10, 14); | ||||
| fpsLabel->raise(); | ||||
| countLabel->show(); | ||||
| // We can get more than one changed event per frame, so do async update. | ||||
| // This also allows the application to be responsive. | ||||
| QObject::connect(chart->scene(), &QGraphicsScene::changed, | ||||
| &dataSource, &DataSource::handleSceneChanged); | ||||
| dataSource.startUpdates(seriesList, fpsLabel); | ||||
| return a.exec(); | ||||
| } | ||||