mainwindow.cpp Example File | Qt GUI 5.12.9

- Qt 5.12
- Qt GUI
- Hello Vulkan Cubes Example
- mainwindow.cpp Example File
- Qt 5.12.9 Reference Documentation

# mainwindow.cpp Example File

hellovulkancubes/mainwindow.cpp

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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;
     }