framelesshelper/examples/QMainWindow/main.cpp

120 lines
5.1 KiB
C++

/*
* MIT License
*
* Copyright (C) 2020 by wangwenx190 (Yuhang Zhao)
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#include "../../framelesswindowsmanager.h"
#include "ui_MainWindow.h"
#include "ui_TitleBar.h"
#include <QApplication>
#include <QStyleOption>
#include <QWidget>
int main(int argc, char *argv[])
{
QCoreApplication::setAttribute(Qt::AA_DontCreateNativeWidgetSiblings);
// High DPI scaling is enabled by default from Qt 6
#if (QT_VERSION < QT_VERSION_CHECK(6, 0, 0))
// Windows: we are using the manifest file to get maximum compatibility
// because some APIs are not supprted on old systems such as Windows 7
// and Windows 8. And once we have set the DPI awareness level in the
// manifest file, any attemptation to try to change it through API will
// fail. In other words, Qt won't be able to enable or disable high DPI
// scaling or change the DPI awareness level once we have set it in the
// manifest file. So the following two lines are uesless actually (However,
// they are still useful on other platforms).
QGuiApplication::setAttribute(Qt::AA_EnableHighDpiScaling);
QGuiApplication::setAttribute(Qt::AA_UseHighDpiPixmaps);
#if (QT_VERSION >= QT_VERSION_CHECK(5, 14, 0))
// Don't round the scale factor.
// This will break QWidget applications because they can't render correctly.
// Qt Quick applications won't have this issue.
QGuiApplication::setHighDpiScaleFactorRoundingPolicy(
Qt::HighDpiScaleFactorRoundingPolicy::PassThrough);
#endif
#endif
QApplication application(argc, argv);
QMainWindow *mainWindow = new QMainWindow;
Ui::MainWindow appMainWindow;
appMainWindow.setupUi(mainWindow);
QWidget *widget = new QWidget;
Ui::TitleBar titleBarWidget;
titleBarWidget.setupUi(widget);
QMenuBar *menuBar = mainWindow->menuBar();
titleBarWidget.horizontalLayout->insertWidget(1, menuBar);
menuBar->setMaximumHeight(20);
mainWindow->setMenuWidget(widget);
QObject::connect(mainWindow,
&QMainWindow::windowIconChanged,
titleBarWidget.iconButton,
&QPushButton::setIcon);
QObject::connect(mainWindow,
&QMainWindow::windowTitleChanged,
titleBarWidget.titleLabel,
&QLabel::setText);
QObject::connect(titleBarWidget.closeButton,
&QPushButton::clicked,
mainWindow,
&QMainWindow::close);
QObject::connect(titleBarWidget.minimizeButton,
&QPushButton::clicked,
mainWindow,
&QMainWindow::showMinimized);
QObject::connect(titleBarWidget.maximizeButton,
&QPushButton::clicked,
[mainWindow, titleBarWidget]() {
if (mainWindow->isMaximized()) {
mainWindow->showNormal();
titleBarWidget.maximizeButton->setToolTip(QObject::tr("Maximize"));
} else {
mainWindow->showMaximized();
titleBarWidget.maximizeButton->setToolTip(QObject::tr("Restore"));
}
});
QStyleOption option;
option.initFrom(mainWindow);
const QIcon icon = mainWindow->style()->standardIcon(QStyle::SP_ComputerIcon, &option);
mainWindow->setWindowIcon(icon);
mainWindow->setWindowTitle(QObject::tr("Hello, World!"));
mainWindow->createWinId(); // Qt's internal function, make sure it's a top level window.
const QWindow *win = mainWindow->windowHandle();
FramelessWindowsManager::addWindow(win);
FramelessWindowsManager::addIgnoreObject(win, titleBarWidget.minimizeButton);
FramelessWindowsManager::addIgnoreObject(win, titleBarWidget.maximizeButton);
FramelessWindowsManager::addIgnoreObject(win, titleBarWidget.closeButton);
FramelessWindowsManager::addIgnoreObject(win, appMainWindow.menubar);
mainWindow->resize(800, 600);
mainWindow->show();
return QApplication::exec();
}