main.cpp Example File

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  #include "customitemgraph.h"

  #include <QtWidgets/QApplication>
  #include <QtWidgets/QWidget>
  #include <QtWidgets/QHBoxLayout>
  #include <QtWidgets/QVBoxLayout>
  #include <QtWidgets/QCheckBox>
  #include <QtWidgets/QLabel>
  #include <QtWidgets/QMessageBox>

  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;
      }

      container->setMinimumSize(QSize(800, 600));
      container->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
      container->setFocusPolicy(Qt::StrongFocus);

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

      QFont font = QFont("Century Gothic", 14);
      QLabel *label = new QLabel("Show:");
      font.setBold(true);
      label->setFont(font);
      vLayoutLeft->addWidget(label);

      font.setBold(false);
      QCheckBox *checkboxOne = new QCheckBox("Oil Rig 1");
      checkboxOne->setChecked(true);
      checkboxOne->setFont(font);
      vLayoutLeft->addWidget(checkboxOne);

      QCheckBox *checkboxTwo = new QCheckBox("Oil Rig 2");
      checkboxTwo->setChecked(true);
      checkboxTwo->setFont(font);
      vLayoutLeft->addWidget(checkboxTwo);

      QCheckBox *checkboxThree = new QCheckBox("Refinery");
      checkboxThree->setFont(font);
      vLayoutLeft->addWidget(checkboxThree);

      QLabel *label2 = new QLabel("Visuals:");
      font.setBold(true);
      label2->setFont(font);
      vLayoutRight->addWidget(label2);

      QCheckBox *checkboxOneRight = new QCheckBox("See-Through");
      font.setBold(false);
      checkboxOneRight->setFont(font);
      vLayoutRight->addWidget(checkboxOneRight);

      QCheckBox *checkboxTwoRight = new QCheckBox("Highlight Oil");
      checkboxTwoRight->setFont(font);
      vLayoutRight->addWidget(checkboxTwoRight);

      QCheckBox *checkboxThreeRight = new QCheckBox("Shadows");
      checkboxThreeRight->setFont(font);
      checkboxThreeRight->setChecked(true);
      vLayoutRight->addWidget(checkboxThreeRight);

      QLabel *label3 = new QLabel("Selection:");
      font.setBold(true);
      label3->setFont(font);
      vLayoutRight->addWidget(label3);

      QLabel *label4 = new QLabel("Nothing");
      font.setBold(false);
      font.setPointSize(11);
      label4->setFont(font);
      vLayoutRight->addWidget(label4);

      widget->setWindowTitle(QStringLiteral("Custom Items Example"));

      widget->show();

      CustomItemGraph *modifier = new CustomItemGraph(graph, label4);

      QObject::connect(checkboxOne, &QCheckBox::stateChanged,
                       modifier, &CustomItemGraph::toggleItemOne);
      QObject::connect(checkboxTwo, &QCheckBox::stateChanged,
                       modifier, &CustomItemGraph::toggleItemTwo);
      QObject::connect(checkboxThree, &QCheckBox::stateChanged,
                       modifier, &CustomItemGraph::toggleItemThree);

      QObject::connect(checkboxOneRight, &QCheckBox::stateChanged,
                       modifier, &CustomItemGraph::toggleSeeThrough);
      QObject::connect(checkboxTwoRight, &QCheckBox::stateChanged,
                       modifier, &CustomItemGraph::toggleOilHighlight);
      QObject::connect(checkboxThreeRight, &QCheckBox::stateChanged,
                       modifier, &CustomItemGraph::toggleShadows);

      return app.exec();
  }