/****************************************************************************
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 ** Copyright (C) 2005-2007 Trolltech ASA. All rights reserved.
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 ** This file is part of the example classes of the Qt Toolkit.
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 ** review the following information:
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 ** additional rights. These rights are described in the Trolltech GPL
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 ** In addition, as a special exception, Trolltech, as the sole copyright
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 ** Trolltech ASA (c) 2007
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 ** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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 ****************************************************************************/
 
 #include <QtGui>
 #include <stdlib.h>
 
 #include "mainwindow.h"
 #include "piecesmodel.h"
 #include "puzzlewidget.h"
 
 MainWindow::MainWindow(QWidget *parent)
     : QMainWindow(parent)
 {
     setupMenus();
     setupWidgets();
     model = new PiecesModel(this);
     piecesList->setModel(model);
 
     setSizePolicy(QSizePolicy(QSizePolicy::Fixed, QSizePolicy::Fixed));
     setWindowTitle(tr("Puzzle"));
 }
 
 void MainWindow::openImage(const QString &amp;path)
 {
     QString fileName = path;
 
     if (fileName.isNull())
         fileName = QFileDialog::getOpenFileName(this,
             tr("Open Image"), "", tr("Image Files (*.png *.jpg *.bmp)"));
 
     if (!fileName.isEmpty()) {
         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(400,
             400, Qt::IgnoreAspectRatio, Qt::SmoothTransformation);
 
     qsrand(QCursor::pos().x() ^ QCursor::pos().y());
 
     model->addPieces(puzzleImage);
     puzzleWidget->clear();
 }
 
 void MainWindow::setupMenus()
 {
     QMenu *fileMenu = menuBar()->addMenu(tr("&amp;File"));
 
     QAction *openAction = fileMenu->addAction(tr("&amp;Open..."));
     openAction->setShortcut(QKeySequence(tr("Ctrl+O")));
 
     QAction *exitAction = fileMenu->addAction(tr("E&amp;xit"));
     exitAction->setShortcut(QKeySequence(tr("Ctrl+Q")));
 
     QMenu *gameMenu = menuBar()->addMenu(tr("&amp;Game"));
 
     QAction *restartAction = gameMenu->addAction(tr("&amp;Restart"));
 
     connect(openAction, SIGNAL(triggered()), this, SLOT(openImage()));
     connect(exitAction, SIGNAL(triggered()), qApp, SLOT(quit()));
     connect(restartAction, SIGNAL(triggered()), this, SLOT(setupPuzzle()));
 }
 
 void MainWindow::setupWidgets()
 {
     QFrame *frame = new QFrame;
     QHBoxLayout *frameLayout = new QHBoxLayout(frame);
 
     piecesList = new QListView;
     piecesList->setDragEnabled(true);
     piecesList->setViewMode(QListView::IconMode);
     piecesList->setIconSize(QSize(60, 60));
     piecesList->setGridSize(QSize(80, 80));
     piecesList->setSpacing(10);
     piecesList->setMovement(QListView::Snap);
     piecesList->setAcceptDrops(true);
     piecesList->setDropIndicatorShown(true);
 
     PiecesModel *model = new PiecesModel(this);
     piecesList->setModel(model);
 
     puzzleWidget = new PuzzleWidget;
 
     connect(puzzleWidget, SIGNAL(puzzleCompleted()),
             this, SLOT(setCompleted()), Qt::QueuedConnection);
 
     frameLayout->addWidget(piecesList);
     frameLayout->addWidget(puzzleWidget);
     setCentralWidget(frame);
 }