mainwindow.cpp Example File

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  #include "mainwindow.h"
  #include "vulkanwindow.h"
  #include <QApplication>
  #include <QLabel>
  #include <QPushButton>
  #include <QLCDNumber>
  #include <QCheckBox>
  #include <QGridLayout>

  MainWindow::MainWindow(VulkanWindow *vulkanWindow)
  {
      QWidget *wrapper = QWidget::createWindowContainer(vulkanWindow);
      wrapper->setFocusPolicy(Qt::StrongFocus);
      wrapper->setFocus();

      infoLabel = new QLabel;
      infoLabel->setFrameStyle(QFrame::Box | QFrame::Raised);
      infoLabel->setAlignment(Qt::AlignCenter);
      infoLabel->setText(tr("This example demonstrates instanced drawing\nof a mesh loaded from a file.\n"
                            "Uses a Phong material with a single light.\n"
                            "Also demonstrates dynamic uniform buffers\nand a bit of threading with QtConcurrent.\n"
                            "Uses 4x MSAA when available.\n"
                            "Comes with an FPS camera.\n"
                            "Hit [Shift+]WASD to walk and strafe.\nPress and move mouse to look around.\n"
                            "Click Add New to increase the number of instances."));

      meshSwitch = new QCheckBox(tr("&Use Qt logo"));
      meshSwitch->setFocusPolicy(Qt::NoFocus); // do not interfere with vulkanWindow's keyboard input

      counterLcd = new QLCDNumber(5);
      counterLcd->setSegmentStyle(QLCDNumber::Filled);
      counterLcd->display(m_count);

      newButton = new QPushButton(tr("&Add new"));
      newButton->setFocusPolicy(Qt::NoFocus);
      quitButton = new QPushButton(tr("&Quit"));
      quitButton->setFocusPolicy(Qt::NoFocus);
      pauseButton = new QPushButton(tr("&Pause"));
      pauseButton->setFocusPolicy(Qt::NoFocus);

      connect(quitButton, &QPushButton::clicked, qApp, &QCoreApplication::quit);
      connect(newButton, &QPushButton::clicked, vulkanWindow, [=] {
          vulkanWindow->addNew();
          m_count = vulkanWindow->instanceCount();
          counterLcd->display(m_count);
      });
      connect(pauseButton, &QPushButton::clicked, vulkanWindow, &VulkanWindow::togglePaused);
      connect(meshSwitch, &QCheckBox::clicked, vulkanWindow, &VulkanWindow::meshSwitched);

      QGridLayout *layout = new QGridLayout;
      layout->addWidget(infoLabel, 0, 2);
      layout->addWidget(meshSwitch, 1, 2);
      layout->addWidget(createLabel(tr("INSTANCES")), 2, 2);
      layout->addWidget(counterLcd, 3, 2);
      layout->addWidget(newButton, 4, 2);
      layout->addWidget(pauseButton, 5, 2);
      layout->addWidget(quitButton, 6, 2);
      layout->addWidget(wrapper, 0, 0, 7, 2);
      setLayout(layout);
  }

  QLabel *MainWindow::createLabel(const QString &text)
  {
      QLabel *lbl = new QLabel(text);
      lbl->setAlignment(Qt::AlignHCenter | Qt::AlignBottom);
      return lbl;
  }