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dmplot/plots/main.cpp

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+/***************************************************************************
+**                                                                        **
+**  QCustomPlot, an easy to use, modern plotting widget for Qt            **
+**  Copyright (C) 2011-2021 Emanuel Eichhammer                            **
+**                                                                        **
+**  This program is free software: you can redistribute it and/or modify  **
+**  it under the terms of the GNU General Public License as published by  **
+**  the Free Software Foundation, either version 3 of the License, or     **
+**  (at your option) any later version.                                   **
+**                                                                        **
+**  This program is distributed in the hope that it will be useful,       **
+**  but WITHOUT ANY WARRANTY; without even the implied warranty of        **
+**  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         **
+**  GNU General Public License for more details.                          **
+**                                                                        **
+**  You should have received a copy of the GNU General Public License     **
+**  along with this program.  If not, see http://www.gnu.org/licenses/.   **
+**                                                                        **
+****************************************************************************
+**           Author: Emanuel Eichhammer                                   **
+**  Website/Contact: http://www.qcustomplot.com/                          **
+**             Date: 29.03.21                                             **
+**          Version: 2.1.0                                                **
+****************************************************************************/
+
+#include <QApplication>
+#include "mainwindow.h"
+
+int main(int argc, char *argv[])
+{
+#if QT_VERSION < QT_VERSION_CHECK(5, 0, 0)
+  QApplication::setGraphicsSystem("raster");
+#endif
+  QApplication a(argc, argv);
+  MainWindow w;
+  w.show();
+  
+  return a.exec();
+}

dmplot/plots/plot-examples.pro

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+#
+#  QCustomPlot Plot Examples
+#
+
+QT       += core gui
+greaterThan(QT_MAJOR_VERSION, 4): QT += widgets printsupport
+
+greaterThan(QT_MAJOR_VERSION, 4): CONFIG += c++11
+lessThan(QT_MAJOR_VERSION, 5): QMAKE_CXXFLAGS += -std=c++11
+
+TARGET = plot-examples
+TEMPLATE = app
+
+SOURCES += main.cpp\
+           mainwindow.cpp \
+         ../../qcustomplot.cpp
+
+HEADERS  += mainwindow.h \
+         ../../qcustomplot.h
+
+FORMS    += mainwindow.ui
+

dmplot/ui/dmplot.cpp

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+#include "dmplot.h"
+
+DMPlot::DMPlot(const QString& title,QWidget* parent)
+    :QDockWidget(title,parent)
+    ,plotWidget(new PlotWidget(this))
+{
+    auto frame = new QFrame(this);
+    auto layout = new QVBoxLayout;
+    frame->setLayout(layout);
+
+    layout->setMargin(0);
+    layout->addWidget(plotWidget);
+    setWidget(frame);
+
+    connect(this,&DMPlot::appendValuetoPlotSGL,plotWidget,&PlotWidget::appentDataDisplaySlot);
+
+}
+

dmplot/ui/dmplot.h

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+#ifndef DMPLOT_H
+#define DMPLOT_H
+
+#include"plotwidget.h"
+#include <QDockWidget>
+
+
+class DMPlot: public QDockWidget
+{
+    Q_OBJECT
+
+signals:
+    void appendValuetoPlotSGL(double value);
+
+public:
+    DMPlot(const QString& title,QWidget* parent = 0);
+protected:
+    PlotWidget* plotWidget;
+
+};
+
+#endif // DMPLOT_H

dmplot/ui/mainwindow.h

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+/***************************************************************************
+**                                                                        **
+**  QCustomPlot, an easy to use, modern plotting widget for Qt            **
+**  Copyright (C) 2011-2021 Emanuel Eichhammer                            **
+**                                                                        **
+**  This program is free software: you can redistribute it and/or modify  **
+**  it under the terms of the GNU General Public License as published by  **
+**  the Free Software Foundation, either version 3 of the License, or     **
+**  (at your option) any later version.                                   **
+**                                                                        **
+**  This program is distributed in the hope that it will be useful,       **
+**  but WITHOUT ANY WARRANTY; without even the implied warranty of        **
+**  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         **
+**  GNU General Public License for more details.                          **
+**                                                                        **
+**  You should have received a copy of the GNU General Public License     **
+**  along with this program.  If not, see http://www.gnu.org/licenses/.   **
+**                                                                        **
+****************************************************************************
+**           Author: Emanuel Eichhammer                                   **
+**  Website/Contact: http://www.qcustomplot.com/                          **
+**             Date: 29.03.21                                             **
+**          Version: 2.1.0                                                **
+****************************************************************************/
+
+/************************************************************************************************************
+**                                                                                                         **
+**  This is the example code for QCustomPlot.                                                              **
+**                                                                                                         **
+**  It demonstrates basic and some advanced capabilities of the widget. The interesting code is inside     **
+**  the "setup(...)Demo" functions of MainWindow.                                                          **
+**                                                                                                         **
+**  In order to see a demo in action, call the respective "setup(...)Demo" function inside the             **
+**  MainWindow constructor. Alternatively you may call setupDemo(i) where i is the index of the demo       **
+**  you want (for those, see MainWindow constructor comments). All other functions here are merely a       **
+**  way to easily create screenshots of all demos for the website. I.e. a timer is set to successively     **
+**  setup all the demos and make a screenshot of the window area and save it in the ./screenshots          **
+**  directory.                                                                                             **
+**                                                                                                         **
+*************************************************************************************************************/
+
+#ifndef MAINWINDOW_H
+#define MAINWINDOW_H
+
+#include <QMainWindow>
+#include <QTimer>
+#include "../../qcustomplot.h" // the header file of QCustomPlot. Don't forget to add it to your project, if you use an IDE, so it gets compiled.
+
+namespace Ui {
+class MainWindow;
+}
+
+class MainWindow : public QMainWindow
+{
+  Q_OBJECT
+  
+public:
+  explicit MainWindow(QWidget *parent = 0);
+  ~MainWindow();
+  
+  void setupDemo(int demoIndex);
+  void setupQuadraticDemo(QCustomPlot *customPlot);
+  void setupSimpleDemo(QCustomPlot *customPlot);
+  void setupSincScatterDemo(QCustomPlot *customPlot);
+  void setupScatterStyleDemo(QCustomPlot *customPlot);
+  void setupLineStyleDemo(QCustomPlot *customPlot);
+  void setupScatterPixmapDemo(QCustomPlot *customPlot);
+  void setupDateDemo(QCustomPlot *customPlot);
+  void setupTextureBrushDemo(QCustomPlot *customPlot);
+  void setupMultiAxisDemo(QCustomPlot *customPlot);
+  void setupLogarithmicDemo(QCustomPlot *customPlot);
+  void setupRealtimeDataDemo(QCustomPlot *customPlot);
+  void setupParametricCurveDemo(QCustomPlot *customPlot);
+  void setupBarChartDemo(QCustomPlot *customPlot);
+  void setupStatisticalDemo(QCustomPlot *customPlot);
+  void setupSimpleItemDemo(QCustomPlot *customPlot);
+  void setupItemDemo(QCustomPlot *customPlot);
+  void setupStyledDemo(QCustomPlot *customPlot);
+  void setupAdvancedAxesDemo(QCustomPlot *customPlot);
+  void setupColorMapDemo(QCustomPlot *customPlot);
+  void setupFinancialDemo(QCustomPlot *customPlot);
+  void setupPolarPlotDemo(QCustomPlot *customPlot);
+  
+  void setupPlayground(QCustomPlot *customPlot);
+  
+private slots:
+  void realtimeDataSlot();
+  void bracketDataSlot();
+  void screenShot();
+  void allScreenShots();
+  
+private:
+  Ui::MainWindow *ui;
+  QString demoName;
+  QTimer dataTimer;
+  QCPItemTracer *itemDemoPhaseTracer;
+  int currentDemoIndex;
+};
+
+#endif // MAINWINDOW_H

dmplot/ui/mainwindow.ui

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+<?xml version="1.0" encoding="UTF-8"?>
+<ui version="4.0">
+ <class>MainWindow</class>
+ <widget class="QMainWindow" name="MainWindow">
+  <property name="geometry">
+   <rect>
+    <x>0</x>
+    <y>0</y>
+    <width>548</width>
+    <height>420</height>
+   </rect>
+  </property>
+  <property name="windowTitle">
+   <string>QCustomPlot plot examples</string>
+  </property>
+  <widget class="QWidget" name="centralWidget">
+   <layout class="QVBoxLayout" name="verticalLayout">
+    <item>
+     <widget class="QCustomPlot" name="customPlot" native="true"/>
+    </item>
+   </layout>
+  </widget>
+  <widget class="QStatusBar" name="statusBar"/>
+ </widget>
+ <layoutdefault spacing="6" margin="11"/>
+ <customwidgets>
+  <customwidget>
+   <class>QCustomPlot</class>
+   <extends>QWidget</extends>
+   <header location="global">qcustomplot.h</header>
+   <container>1</container>
+  </customwidget>
+ </customwidgets>
+ <resources/>
+ <connections/>
+</ui>

dmplot/ui/plotwidget.cpp

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+#include "plotwidget.h"
+#include "ui_plotwidget.h"
+#include <QDebug>
+#if QT_VERSION < QT_VERSION_CHECK(6, 0, 0)
+#  include <QDesktopWidget>
+#endif
+#include <QScreen>
+#include <QMessageBox>
+#include <QMetaEnum>
+
+PlotWidget::PlotWidget(QWidget *parent) :
+  QMainWindow(parent),
+  ui(new Ui::PlotWidget)
+{
+  ui->setupUi(this);
+  setGeometry(400, 250, 542, 390);
+  setupItemDemo(ui->customPlot);
+  statusBar()->clearMessage();
+  ui->customPlot->replot();
+}
+
+
+void PlotWidget::setupItemDemo(QCustomPlot *customPlot)
+{
+  customPlot->setInteractions(QCP::iRangeDrag | QCP::iRangeZoom);
+  QCPGraph *graph = customPlot->addGraph();
+
+  graph->setData(x, y);
+  graph->setPen(QPen(Qt::blue));
+  graph->rescaleKeyAxis();
+  customPlot->yAxis->setRange(-1.45, 1.65);
+  customPlot->xAxis->setRange(1,500);
+  customPlot->xAxis->grid()->setZeroLinePen(Qt::NoPen);
+}
+
+
+void PlotWidget::appentDataDisplaySlot(double yValue)
+{
+  double secs = QCPAxisTickerDateTime::dateTimeToKey(QDateTime::currentDateTime());  
+
+
+  if(0!=xNum)
+  {
+      y.append(yValue);
+      x.insert(0,xNum);
+      xNum--;
+  }
+  else
+  {
+      y.remove(0);
+      y.append(yValue);
+  }
+  ui->customPlot->graph()->setData(x,y);
+  ui->customPlot->replot();
+
+  // calculate frames per second:
+//  double key = secs;
+//  static double lastFpsKey;
+//  static int frameCount;
+//  ++frameCount;
+//  if (key-lastFpsKey > 2) // average fps over 2 seconds
+//  {
+//    ui->statusBar->showMessage(
+//          QString("%1 FPS, Total Data points: %2")
+//          .arg(frameCount/(key-lastFpsKey), 0, 'f', 0)
+//          .arg(ui->customPlot->graph(0)->data()->size())
+//          , 0);
+//    lastFpsKey = key;
+//    frameCount = 0;
+//  }
+}
+
+
+PlotWidget::~PlotWidget()
+{
+  delete ui;
+}
+
+void PlotWidget::setPlotDataCount(int value)
+{
+    n = value;
+}
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dmplot/ui/plotwidget.h

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+#ifndef POLTWIDGET_H
+#define POLTWIDGET_H
+
+
+#include <QMainWindow>
+#include <QTimer>
+#include "qcustomplot.h"
+
+namespace Ui {
+class PlotWidget;
+}
+
+class PlotWidget : public QMainWindow
+{
+  Q_OBJECT
+
+public:
+  explicit PlotWidget(QWidget *parent = 0);
+  ~PlotWidget();
+  void setupItemDemo(QCustomPlot *customPlot);
+
+public slots:
+  void appentDataDisplaySlot(double yValue=0);
+  void setPlotDataCount(int value);
+
+private:
+  Ui::PlotWidget *ui;
+  int n{500};
+  int xNum{n};
+  QVector<double> x, y;
+};
+
+#endif // POLTWIDGET_H

dmplot/ui/plotwidget.ui

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+<?xml version="1.0" encoding="UTF-8"?>
+<ui version="4.0">
+ <class>PlotWidget</class>
+ <widget class="QMainWindow" name="PlotWidget">
+  <property name="geometry">
+   <rect>
+    <x>0</x>
+    <y>0</y>
+    <width>238</width>
+    <height>239</height>
+   </rect>
+  </property>
+  <property name="windowTitle">
+   <string>QCustomPlot plot examples</string>
+  </property>
+  <widget class="QWidget" name="centralWidget">
+   <layout class="QVBoxLayout" name="verticalLayout">
+    <item>
+     <widget class="QCustomPlot" name="customPlot" native="true"/>
+    </item>
+   </layout>
+  </widget>
+  <widget class="QStatusBar" name="statusBar"/>
+ </widget>
+ <layoutdefault spacing="6" margin="11"/>
+ <customwidgets>
+  <customwidget>
+   <class>QCustomPlot</class>
+   <extends>QWidget</extends>
+   <header location="global">qcustomplot.h</header>
+   <container>1</container>
+  </customwidget>
+ </customwidgets>
+ <resources/>
+ <connections/>
+</ui>