Qt 5.8 | Qt Data Visualization | Surface Example | main.cpp Example File

Qt 5.8.0 Reference Documentation

# main.cpp Example File

surface/main.cpp

      /****************************************************************************
      **
      ** 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.
      **
      ** $QT_BEGIN_LICENSE:GPL$
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      ** Alternatively, this file may be used under the terms of the GNU
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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();
      }