mainwindow.cpp Example File

draganddrop/puzzle/mainwindow.cpp
/**************************************************************************** ** ** Copyright (C) 2016 The Qt Company Ltd. ** Contact: https://www.qt.io/licensing/ ** ** This file is part of the examples of the Qt Toolkit. ** ** $QT_BEGIN_LICENSE:BSD$ ** Commercial License Usage ** Licensees holding valid commercial Qt licenses may use this file in ** accordance with the commercial license agreement provided with the ** Software or, alternatively, in accordance with the terms contained in ** a written agreement between you and The Qt Company. For licensing terms ** and conditions see https://www.qt.io/terms-conditions. For further ** information use the contact form at https://www.qt.io/contact-us. ** ** BSD License Usage ** Alternatively, you may use this file under the terms of the BSD license ** as follows: ** ** "Redistribution and use in source and binary forms, with or without ** modification, are permitted provided that the following conditions are ** met: ** * Redistributions of source code must retain the above copyright ** notice, this list of conditions and the following disclaimer. ** * Redistributions in binary form must reproduce the above copyright ** notice, this list of conditions and the following disclaimer in ** the documentation and/or other materials provided with the ** distribution. ** * Neither the name of The Qt Company Ltd nor the names of its ** contributors may be used to endorse or promote products derived ** from this software without specific prior written permission. ** ** ** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT ** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR ** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT ** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, ** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT ** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, ** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY ** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT ** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE ** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE." ** ** $QT_END_LICENSE$ ** ****************************************************************************/
#include "mainwindow.h" #include "pieceslist.h" #include "puzzlewidget.h" #include <QtWidgets> #include <stdlib.h> MainWindow::MainWindow(QWidget *parent) : QMainWindow(parent) { setupMenus(); setupWidgets(); 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::Close); 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->width(), puzzleWidget->height(), Qt::IgnoreAspectRatio, Qt::SmoothTransformation); piecesList->clear(); for (int y = 0; y < 5; ++y) { for (int x = 0; x < 5; ++x) { int pieceSize = puzzleWidget->pieceSize(); QPixmap pieceImage = puzzleImage.copy(x * pieceSize, y * pieceSize, pieceSize, pieceSize); piecesList->addPiece(pieceImage, QPoint(x, y)); } } qsrand(QCursor::pos().x() ^ QCursor::pos().y()); for (int i = 0; i < piecesList->count(); ++i) { if (int(2.0*qrand()/(RAND_MAX+1.0)) == 1) { QListWidgetItem *item = piecesList->takeItem(i); piecesList->insertItem(0, item); } } puzzleWidget->clear(); } void MainWindow::setupMenus() { QMenu *fileMenu = menuBar()->addMenu(tr("&File")); QAction *openAction = fileMenu->addAction(tr("&Open..."), this, &MainWindow::openImage); openAction->setShortcuts(QKeySequence::Open); QAction *exitAction = fileMenu->addAction(tr("E&xit"), qApp, &QCoreApplication::quit); exitAction->setShortcuts(QKeySequence::Quit); QMenu *gameMenu = menuBar()->addMenu(tr("&Game")); gameMenu->addAction(tr("&Restart"), this, &MainWindow::setupPuzzle); } void MainWindow::setupWidgets() { QFrame *frame = new QFrame; QHBoxLayout *frameLayout = new QHBoxLayout(frame); puzzleWidget = new PuzzleWidget(400); piecesList = new PiecesList(puzzleWidget->pieceSize(), this); connect(puzzleWidget, &PuzzleWidget::puzzleCompleted, this, &MainWindow::setCompleted, Qt::QueuedConnection); frameLayout->addWidget(piecesList); frameLayout->addWidget(puzzleWidget); setCentralWidget(frame); }