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50
51#include "mainwindow.h"
52#include "pieceslist.h"
53#include "puzzlewidget.h"
54
55#include <QtWidgets>
56#include <stdlib.h>
57
58MainWindow::MainWindow(QWidget *parent)
59 : QMainWindow(parent)
60{
61 setupMenus();
62 setupWidgets();
63
64 setSizePolicy(QSizePolicy(QSizePolicy::Fixed, QSizePolicy::Fixed));
65 setWindowTitle(tr(s: "Puzzle"));
66}
67
68void MainWindow::openImage()
69{
70 const QString directory =
71 QStandardPaths::standardLocations(type: QStandardPaths::PicturesLocation).value(i: 0, defaultValue: QDir::homePath());
72 QFileDialog dialog(this, tr(s: "Open Image"), directory);
73 dialog.setAcceptMode(QFileDialog::AcceptOpen);
74 dialog.setFileMode(QFileDialog::ExistingFile);
75 QStringList mimeTypeFilters;
76 for (const QByteArray &mimeTypeName : QImageReader::supportedMimeTypes())
77 mimeTypeFilters.append(t: mimeTypeName);
78 mimeTypeFilters.sort();
79 dialog.setMimeTypeFilters(mimeTypeFilters);
80 dialog.selectMimeTypeFilter(filter: "image/jpeg");
81 if (dialog.exec() == QDialog::Accepted)
82 loadImage(path: dialog.selectedFiles().constFirst());
83}
84
85void MainWindow::loadImage(const QString &fileName)
86{
87 QPixmap newImage;
88 if (!newImage.load(fileName)) {
89 QMessageBox::warning(parent: this, title: tr(s: "Open Image"),
90 text: tr(s: "The image file could not be loaded."),
91 buttons: QMessageBox::Close);
92 return;
93 }
94 puzzleImage = newImage;
95 setupPuzzle();
96}
97
98void MainWindow::setCompleted()
99{
100 QMessageBox::information(parent: this, title: tr(s: "Puzzle Completed"),
101 text: tr(s: "Congratulations! You have completed the puzzle!\n"
102 "Click OK to start again."),
103 button0: QMessageBox::Ok);
104
105 setupPuzzle();
106}
107
108void MainWindow::setupPuzzle()
109{
110 int size = qMin(a: puzzleImage.width(), b: puzzleImage.height());
111 puzzleImage = puzzleImage.copy(ax: (puzzleImage.width() - size) / 2,
112 ay: (puzzleImage.height() - size) / 2, awidth: size, aheight: size).scaled(w: puzzleWidget->width(),
113 h: puzzleWidget->height(), aspectMode: Qt::IgnoreAspectRatio, mode: Qt::SmoothTransformation);
114
115 piecesList->clear();
116
117 for (int y = 0; y < 5; ++y) {
118 for (int x = 0; x < 5; ++x) {
119 int pieceSize = puzzleWidget->pieceSize();
120 QPixmap pieceImage = puzzleImage.copy(ax: x * pieceSize, ay: y * pieceSize, awidth: pieceSize, aheight: pieceSize);
121 piecesList->addPiece(pixmap: pieceImage, location: QPoint(x, y));
122 }
123 }
124
125 for (int i = 0; i < piecesList->count(); ++i) {
126 if (QRandomGenerator::global()->bounded(highest: 2) == 1) {
127 QListWidgetItem *item = piecesList->takeItem(row: i);
128 piecesList->insertItem(row: 0, item);
129 }
130 }
131
132 puzzleWidget->clear();
133}
134
135void MainWindow::setupMenus()
136{
137 QMenu *fileMenu = menuBar()->addMenu(title: tr(s: "&File"));
138
139 QAction *openAction = fileMenu->addAction(text: tr(s: "&Open..."), object: this, slot: &MainWindow::openImage);
140 openAction->setShortcuts(QKeySequence::Open);
141
142 QAction *exitAction = fileMenu->addAction(text: tr(s: "E&xit"), qApp, slot: &QCoreApplication::quit);
143 exitAction->setShortcuts(QKeySequence::Quit);
144
145 QMenu *gameMenu = menuBar()->addMenu(title: tr(s: "&Game"));
146
147 gameMenu->addAction(text: tr(s: "&Restart"), object: this, slot: &MainWindow::setupPuzzle);
148}
149
150void MainWindow::setupWidgets()
151{
152 QFrame *frame = new QFrame;
153 QHBoxLayout *frameLayout = new QHBoxLayout(frame);
154 puzzleWidget = new PuzzleWidget(400);
155
156 piecesList = new PiecesList(puzzleWidget->pieceSize(), this);
157
158
159 connect(sender: puzzleWidget, signal: &PuzzleWidget::puzzleCompleted,
160 receiver: this, slot: &MainWindow::setCompleted, type: Qt::QueuedConnection);
161
162 frameLayout->addWidget(piecesList);
163 frameLayout->addWidget(puzzleWidget);
164 setCentralWidget(frame);
165}
166

source code of qtbase/examples/widgets/draganddrop/puzzle/mainwindow.cpp