mainwindow.cpp Example File

itemviews/puzzle/mainwindow.cpp
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#include "mainwindow.h" #include "piecesmodel.h" #include "puzzlewidget.h" #include <QtWidgets> #include <stdlib.h> MainWindow::MainWindow(QWidget *parent) : QMainWindow(parent) { setupMenus(); setupWidgets(); model = new PiecesModel(puzzleWidget->pieceSize(), this); piecesList->setModel(model); setSizePolicy(QSizePolicy(QSizePolicy::Fixed, QSizePolicy::Fixed)); setWindowTitle(tr("Puzzle")); } void MainWindow::openImage() { const QString fileName = QFileDialog::getOpenFileName(this, tr("Open Image"), QString(), tr("Image Files (*.png *.jpg *.bmp)")); if (!fileName.isEmpty()) loadImage(fileName); } void MainWindow::loadImage(const QString &fileName) { QPixmap newImage; if (!newImage.load(fileName)) { QMessageBox::warning(this, tr("Open Image"), tr("The image file could not be loaded."), QMessageBox::Cancel); return; } puzzleImage = newImage; setupPuzzle(); } void MainWindow::setCompleted() { QMessageBox::information(this, tr("Puzzle Completed"), tr("Congratulations! You have completed the puzzle!\n" "Click OK to start again."), QMessageBox::Ok); setupPuzzle(); } void MainWindow::setupPuzzle() { int size = qMin(puzzleImage.width(), puzzleImage.height()); puzzleImage = puzzleImage.copy((puzzleImage.width() - size) / 2, (puzzleImage.height() - size) / 2, size, size).scaled(puzzleWidget->imageSize(), puzzleWidget->imageSize(), Qt::IgnoreAspectRatio, Qt::SmoothTransformation); qsrand(QCursor::pos().x() ^ QCursor::pos().y()); model->addPieces(puzzleImage); puzzleWidget->clear(); } void MainWindow::setupMenus() { QMenu *fileMenu = menuBar()->addMenu(tr("&File")); QAction *openAction = fileMenu->addAction(tr("&Open...")); openAction->setShortcuts(QKeySequence::Open); QAction *exitAction = fileMenu->addAction(tr("E&xit")); exitAction->setShortcuts(QKeySequence::Quit); QMenu *gameMenu = menuBar()->addMenu(tr("&Game")); QAction *restartAction = gameMenu->addAction(tr("&Restart")); connect(openAction, &QAction::triggered, this, &MainWindow::openImage); connect(exitAction, &QAction::triggered, qApp, &QCoreApplication::quit); connect(restartAction, &QAction::triggered, this, &MainWindow::setupPuzzle); } void MainWindow::setupWidgets() { QFrame *frame = new QFrame; QHBoxLayout *frameLayout = new QHBoxLayout(frame); puzzleWidget = new PuzzleWidget(400); piecesList = new QListView; piecesList->setDragEnabled(true); piecesList->setViewMode(QListView::IconMode); piecesList->setIconSize(QSize(puzzleWidget->pieceSize() - 20, puzzleWidget->pieceSize() - 20)); piecesList->setGridSize(QSize(puzzleWidget->pieceSize(), puzzleWidget->pieceSize())); piecesList->setSpacing(10); piecesList->setMovement(QListView::Snap); piecesList->setAcceptDrops(true); piecesList->setDropIndicatorShown(true); PiecesModel *model = new PiecesModel(puzzleWidget->pieceSize(), this); piecesList->setModel(model); connect(puzzleWidget, &PuzzleWidget::puzzleCompleted, this, &MainWindow::setCompleted, Qt::QueuedConnection); frameLayout->addWidget(piecesList); frameLayout->addWidget(puzzleWidget); setCentralWidget(frame); }