qt5base-lts/examples/vulkan/hellovulkancubes/mainwindow.cpp

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/****************************************************************************
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** Copyright (C) 2017 The Qt Company Ltd.
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** This file is part of the examples of the Qt Toolkit.
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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;
}