Qt 5.7Qt Data VisualizationSurface Examplemain.cpp Example File
Qt 5.7.1 Reference Documentation

main.cpp Example File

surface/main.cpp 

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  ** Copyright (C) 2016 The Qt Company Ltd.
  ** Contact: https://www.qt.io/licensing/
  **
  ** This file is part of the Qt Data Visualization module of the Qt Toolkit.
  **
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  ** the Free Software Foundation and appearing in the file LICENSE.GPL3
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  #include "surfacegraph.h"

  #include <QtWidgets/QApplication>
  #include <QtWidgets/QWidget>
  #include <QtWidgets/QHBoxLayout>
  #include <QtWidgets/QVBoxLayout>
  #include <QtWidgets/QPushButton>
  #include <QtWidgets/QRadioButton>
  #include <QtWidgets/QSlider>
  #include <QtWidgets/QGroupBox>
  #include <QtWidgets/QComboBox>
  #include <QtWidgets/QLabel>
  #include <QtWidgets/QMessageBox>
  #include <QtGui/QPainter>
  #include <QtGui/QScreen>

  int main(int argc, char **argv)
  {
      QApplication app(argc, argv);
      Q3DSurface *graph = new Q3DSurface();
      QWidget *container = QWidget::createWindowContainer(graph);

      if (!graph->hasContext()) {
          QMessageBox msgBox;
          msgBox.setText("Couldn't initialize the OpenGL context.");
          msgBox.exec();
          return -1;
      }

      QSize screenSize = graph->screen()->size();
      container->setMinimumSize(QSize(screenSize.width() / 2, screenSize.height() / 1.6));
      container->setMaximumSize(screenSize);
      container->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
      container->setFocusPolicy(Qt::StrongFocus);

      QWidget *widget = new QWidget;
      QHBoxLayout *hLayout = new QHBoxLayout(widget);
      QVBoxLayout *vLayout = new QVBoxLayout();
      hLayout->addWidget(container, 1);
      hLayout->addLayout(vLayout);
      vLayout->setAlignment(Qt::AlignTop);

      widget->setWindowTitle(QStringLiteral("Surface example"));

      QGroupBox *modelGroupBox = new QGroupBox(QStringLiteral("Model"));

      QRadioButton *sqrtSinModelRB = new QRadioButton(widget);
      sqrtSinModelRB->setText(QStringLiteral("Sqrt && Sin"));
      sqrtSinModelRB->setChecked(false);

      QRadioButton *heightMapModelRB = new QRadioButton(widget);
      heightMapModelRB->setText(QStringLiteral("Height Map"));
      heightMapModelRB->setChecked(false);

      QVBoxLayout *modelVBox = new QVBoxLayout;
      modelVBox->addWidget(sqrtSinModelRB);
      modelVBox->addWidget(heightMapModelRB);
      modelGroupBox->setLayout(modelVBox);

      QGroupBox *selectionGroupBox = new QGroupBox(QStringLiteral("Selection Mode"));

      QRadioButton *modeNoneRB = new QRadioButton(widget);
      modeNoneRB->setText(QStringLiteral("No selection"));
      modeNoneRB->setChecked(false);

      QRadioButton *modeItemRB = new QRadioButton(widget);
      modeItemRB->setText(QStringLiteral("Item"));
      modeItemRB->setChecked(false);

      QRadioButton *modeSliceRowRB = new QRadioButton(widget);
      modeSliceRowRB->setText(QStringLiteral("Row Slice"));
      modeSliceRowRB->setChecked(false);

      QRadioButton *modeSliceColumnRB = new QRadioButton(widget);
      modeSliceColumnRB->setText(QStringLiteral("Column Slice"));
      modeSliceColumnRB->setChecked(false);

      QVBoxLayout *selectionVBox = new QVBoxLayout;
      selectionVBox->addWidget(modeNoneRB);
      selectionVBox->addWidget(modeItemRB);
      selectionVBox->addWidget(modeSliceRowRB);
      selectionVBox->addWidget(modeSliceColumnRB);
      selectionGroupBox->setLayout(selectionVBox);

      QSlider *axisMinSliderX = new QSlider(Qt::Horizontal, widget);
      axisMinSliderX->setMinimum(0);
      axisMinSliderX->setTickInterval(1);
      axisMinSliderX->setEnabled(true);
      QSlider *axisMaxSliderX = new QSlider(Qt::Horizontal, widget);
      axisMaxSliderX->setMinimum(1);
      axisMaxSliderX->setTickInterval(1);
      axisMaxSliderX->setEnabled(true);
      QSlider *axisMinSliderZ = new QSlider(Qt::Horizontal, widget);
      axisMinSliderZ->setMinimum(0);
      axisMinSliderZ->setTickInterval(1);
      axisMinSliderZ->setEnabled(true);
      QSlider *axisMaxSliderZ = new QSlider(Qt::Horizontal, widget);
      axisMaxSliderZ->setMinimum(1);
      axisMaxSliderZ->setTickInterval(1);
      axisMaxSliderZ->setEnabled(true);

      QComboBox *themeList = new QComboBox(widget);
      themeList->addItem(QStringLiteral("Qt"));
      themeList->addItem(QStringLiteral("Primary Colors"));
      themeList->addItem(QStringLiteral("Digia"));
      themeList->addItem(QStringLiteral("Stone Moss"));
      themeList->addItem(QStringLiteral("Army Blue"));
      themeList->addItem(QStringLiteral("Retro"));
      themeList->addItem(QStringLiteral("Ebony"));
      themeList->addItem(QStringLiteral("Isabelle"));

      QGroupBox *colorGroupBox = new QGroupBox(QStringLiteral("Custom gradient"));

      QLinearGradient grBtoY(0, 0, 1, 100);
      grBtoY.setColorAt(1.0, Qt::black);
      grBtoY.setColorAt(0.67, Qt::blue);
      grBtoY.setColorAt(0.33, Qt::red);
      grBtoY.setColorAt(0.0, Qt::yellow);
      QPixmap pm(24, 100);
      QPainter pmp(&pm);
      pmp.setBrush(QBrush(grBtoY));
      pmp.setPen(Qt::NoPen);
      pmp.drawRect(0, 0, 24, 100);
      QPushButton *gradientBtoYPB = new QPushButton(widget);
      gradientBtoYPB->setIcon(QIcon(pm));
      gradientBtoYPB->setIconSize(QSize(24, 100));

      QLinearGradient grGtoR(0, 0, 1, 100);
      grGtoR.setColorAt(1.0, Qt::darkGreen);
      grGtoR.setColorAt(0.5, Qt::yellow);
      grGtoR.setColorAt(0.2, Qt::red);
      grGtoR.setColorAt(0.0, Qt::darkRed);
      pmp.setBrush(QBrush(grGtoR));
      pmp.drawRect(0, 0, 24, 100);
      QPushButton *gradientGtoRPB = new QPushButton(widget);
      gradientGtoRPB->setIcon(QIcon(pm));
      gradientGtoRPB->setIconSize(QSize(24, 100));

      QHBoxLayout *colorHBox = new QHBoxLayout;
      colorHBox->addWidget(gradientBtoYPB);
      colorHBox->addWidget(gradientGtoRPB);
      colorGroupBox->setLayout(colorHBox);

      vLayout->addWidget(modelGroupBox);
      vLayout->addWidget(selectionGroupBox);
      vLayout->addWidget(new QLabel(QStringLiteral("Column range")));
      vLayout->addWidget(axisMinSliderX);
      vLayout->addWidget(axisMaxSliderX);
      vLayout->addWidget(new QLabel(QStringLiteral("Row range")));
      vLayout->addWidget(axisMinSliderZ);
      vLayout->addWidget(axisMaxSliderZ);
      vLayout->addWidget(new QLabel(QStringLiteral("Theme")));
      vLayout->addWidget(themeList);
      vLayout->addWidget(colorGroupBox);

      widget->show();

      SurfaceGraph *modifier = new SurfaceGraph(graph);

      QObject::connect(heightMapModelRB, &QRadioButton::toggled,
                       modifier, &SurfaceGraph::enableHeightMapModel);
      QObject::connect(sqrtSinModelRB, &QRadioButton::toggled,
                       modifier, &SurfaceGraph::enableSqrtSinModel);
      QObject::connect(modeNoneRB, &QRadioButton::toggled,
                       modifier, &SurfaceGraph::toggleModeNone);
      QObject::connect(modeItemRB,  &QRadioButton::toggled,
                       modifier, &SurfaceGraph::toggleModeItem);
      QObject::connect(modeSliceRowRB,  &QRadioButton::toggled,
                       modifier, &SurfaceGraph::toggleModeSliceRow);
      QObject::connect(modeSliceColumnRB,  &QRadioButton::toggled,
                       modifier, &SurfaceGraph::toggleModeSliceColumn);
      QObject::connect(axisMinSliderX, &QSlider::valueChanged,
                       modifier, &SurfaceGraph::adjustXMin);
      QObject::connect(axisMaxSliderX, &QSlider::valueChanged,
                       modifier, &SurfaceGraph::adjustXMax);
      QObject::connect(axisMinSliderZ, &QSlider::valueChanged,
                       modifier, &SurfaceGraph::adjustZMin);
      QObject::connect(axisMaxSliderZ, &QSlider::valueChanged,
                       modifier, &SurfaceGraph::adjustZMax);
      QObject::connect(themeList, SIGNAL(currentIndexChanged(int)),
                       modifier, SLOT(changeTheme(int)));
      QObject::connect(gradientBtoYPB, &QPushButton::pressed,
                       modifier, &SurfaceGraph::setBlackToYellowGradient);
      QObject::connect(gradientGtoRPB, &QPushButton::pressed,
                       modifier, &SurfaceGraph::setGreenToRedGradient);

      modifier->setAxisMinSliderX(axisMinSliderX);
      modifier->setAxisMaxSliderX(axisMaxSliderX);
      modifier->setAxisMinSliderZ(axisMinSliderZ);
      modifier->setAxisMaxSliderZ(axisMaxSliderZ);

      sqrtSinModelRB->setChecked(true);
      modeItemRB->setChecked(true);
      themeList->setCurrentIndex(2);

      return app.exec();
  }

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