mainwidget.cpp Example File

gestures/imagegestures/mainwidget.cpp
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 #include "imagewidget.h"
 #include "mainwidget.h"

 #include <QScreen>
 #include <QApplication>
 #include <QDesktopWidget>
 #include <QDir>

 MainWidget::MainWidget(QWidget *parent)
     : QMainWindow(parent)
     , imageWidget(new ImageWidget(this))
 {
     setCentralWidget(imageWidget);
     const QRect screenGeometry = QApplication::desktop()->availableGeometry();
     QRect geometry(QPoint(0, 0), QSize(screenGeometry.width() * 3 / 4, screenGeometry.height() * 3 / 4));
     geometry.moveCenter(screenGeometry.center());
     setGeometry(geometry);
 }

 void MainWidget::openDirectory(const QString &path)
 {
     setWindowTitle(QDir::toNativeSeparators(path));
     imageWidget->openDirectory(path);
 }

 void MainWidget::grabGestures(const QList<Qt::GestureType> &gestures)
 {
     imageWidget->grabGestures(gestures);
 }