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-rw-r--r--examples/draganddrop/puzzle/example.jpgbin0 -> 42654 bytes
-rw-r--r--examples/draganddrop/puzzle/main.cpp55
-rw-r--r--examples/draganddrop/puzzle/mainwindow.cpp151
-rw-r--r--examples/draganddrop/puzzle/mainwindow.h77
-rw-r--r--examples/draganddrop/puzzle/pieceslist.cpp122
-rw-r--r--examples/draganddrop/puzzle/pieceslist.h62
-rw-r--r--examples/draganddrop/puzzle/puzzle.pro20
-rw-r--r--examples/draganddrop/puzzle/puzzle.qrc5
-rw-r--r--examples/draganddrop/puzzle/puzzlewidget.cpp205
-rw-r--r--examples/draganddrop/puzzle/puzzlewidget.h86
10 files changed, 783 insertions, 0 deletions
diff --git a/examples/draganddrop/puzzle/example.jpg b/examples/draganddrop/puzzle/example.jpg
new file mode 100644
index 0000000..e09fb70
--- /dev/null
+++ b/examples/draganddrop/puzzle/example.jpg
Binary files differ
diff --git a/examples/draganddrop/puzzle/main.cpp b/examples/draganddrop/puzzle/main.cpp
new file mode 100644
index 0000000..e0e5cc1
--- /dev/null
+++ b/examples/draganddrop/puzzle/main.cpp
@@ -0,0 +1,55 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the examples of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain
+** additional rights. These rights are described in the Nokia Qt LGPL
+** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include <QApplication>
+
+#include "mainwindow.h"
+
+int main(int argc, char *argv[])
+{
+ Q_INIT_RESOURCE(puzzle);
+
+ QApplication app(argc, argv);
+ MainWindow window;
+ window.openImage(":/images/example.jpg");
+ window.show();
+ return app.exec();
+}
diff --git a/examples/draganddrop/puzzle/mainwindow.cpp b/examples/draganddrop/puzzle/mainwindow.cpp
new file mode 100644
index 0000000..f998882
--- /dev/null
+++ b/examples/draganddrop/puzzle/mainwindow.cpp
@@ -0,0 +1,151 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the examples of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain
+** additional rights. These rights are described in the Nokia Qt LGPL
+** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include <QtGui>
+#include <stdlib.h>
+
+#include "mainwindow.h"
+#include "pieceslist.h"
+#include "puzzlewidget.h"
+
+MainWindow::MainWindow(QWidget *parent)
+ : QMainWindow(parent)
+{
+ setupMenus();
+ setupWidgets();
+
+ setSizePolicy(QSizePolicy(QSizePolicy::Fixed, QSizePolicy::Fixed));
+ setWindowTitle(tr("Puzzle"));
+}
+
+void MainWindow::openImage(const QString &path)
+{
+ QString fileName = path;
+
+ if (fileName.isNull())
+ fileName = QFileDialog::getOpenFileName(this,
+ tr("Open Image"), "", "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);
+
+ piecesList->clear();
+
+ for (int y = 0; y < 5; ++y) {
+ for (int x = 0; x < 5; ++x) {
+ QPixmap pieceImage = puzzleImage.copy(x*80, y*80, 80, 80);
+ 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..."));
+ openAction->setShortcut(QKeySequence(tr("Ctrl+O")));
+
+ QAction *exitAction = fileMenu->addAction(tr("E&xit"));
+ exitAction->setShortcut(QKeySequence(tr("Ctrl+Q")));
+
+ QMenu *gameMenu = menuBar()->addMenu(tr("&Game"));
+
+ QAction *restartAction = gameMenu->addAction(tr("&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 PiecesList;
+ puzzleWidget = new PuzzleWidget;
+
+ connect(puzzleWidget, SIGNAL(puzzleCompleted()),
+ this, SLOT(setCompleted()), Qt::QueuedConnection);
+
+ frameLayout->addWidget(piecesList);
+ frameLayout->addWidget(puzzleWidget);
+ setCentralWidget(frame);
+}
diff --git a/examples/draganddrop/puzzle/mainwindow.h b/examples/draganddrop/puzzle/mainwindow.h
new file mode 100644
index 0000000..edfbb12
--- /dev/null
+++ b/examples/draganddrop/puzzle/mainwindow.h
@@ -0,0 +1,77 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the examples of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain
+** additional rights. These rights are described in the Nokia Qt LGPL
+** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef MAINWINDOW_H
+#define MAINWINDOW_H
+
+#include <QPixmap>
+#include <QMainWindow>
+
+class PiecesList;
+class PuzzleWidget;
+QT_BEGIN_NAMESPACE
+class QListWidgetItem;
+QT_END_NAMESPACE
+
+class MainWindow : public QMainWindow
+{
+ Q_OBJECT
+
+public:
+ MainWindow(QWidget *parent = 0);
+
+public slots:
+ void openImage(const QString &path = QString());
+ void setupPuzzle();
+
+private slots:
+ void setCompleted();
+
+private:
+ void setupMenus();
+ void setupWidgets();
+
+ QPixmap puzzleImage;
+ PiecesList *piecesList;
+ PuzzleWidget *puzzleWidget;
+};
+
+#endif
diff --git a/examples/draganddrop/puzzle/pieceslist.cpp b/examples/draganddrop/puzzle/pieceslist.cpp
new file mode 100644
index 0000000..77d06fb
--- /dev/null
+++ b/examples/draganddrop/puzzle/pieceslist.cpp
@@ -0,0 +1,122 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the examples of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain
+** additional rights. These rights are described in the Nokia Qt LGPL
+** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include <QtGui>
+
+#include "pieceslist.h"
+
+PiecesList::PiecesList(QWidget *parent)
+ : QListWidget(parent)
+{
+ setDragEnabled(true);
+ setViewMode(QListView::IconMode);
+ setIconSize(QSize(60, 60));
+ setSpacing(10);
+ setAcceptDrops(true);
+ setDropIndicatorShown(true);
+}
+
+void PiecesList::dragEnterEvent(QDragEnterEvent *event)
+{
+ if (event->mimeData()->hasFormat("image/x-puzzle-piece"))
+ event->accept();
+ else
+ event->ignore();
+}
+
+void PiecesList::dragMoveEvent(QDragMoveEvent *event)
+{
+ if (event->mimeData()->hasFormat("image/x-puzzle-piece")) {
+ event->setDropAction(Qt::MoveAction);
+ event->accept();
+ } else
+ event->ignore();
+}
+
+void PiecesList::dropEvent(QDropEvent *event)
+{
+ if (event->mimeData()->hasFormat("image/x-puzzle-piece")) {
+ QByteArray pieceData = event->mimeData()->data("image/x-puzzle-piece");
+ QDataStream dataStream(&pieceData, QIODevice::ReadOnly);
+ QPixmap pixmap;
+ QPoint location;
+ dataStream >> pixmap >> location;
+
+ addPiece(pixmap, location);
+
+ event->setDropAction(Qt::MoveAction);
+ event->accept();
+ } else
+ event->ignore();
+}
+
+void PiecesList::addPiece(QPixmap pixmap, QPoint location)
+{
+ QListWidgetItem *pieceItem = new QListWidgetItem(this);
+ pieceItem->setIcon(QIcon(pixmap));
+ pieceItem->setData(Qt::UserRole, QVariant(pixmap));
+ pieceItem->setData(Qt::UserRole+1, location);
+ pieceItem->setFlags(Qt::ItemIsEnabled | Qt::ItemIsSelectable
+ | Qt::ItemIsDragEnabled);
+}
+
+void PiecesList::startDrag(Qt::DropActions /*supportedActions*/)
+{
+ QListWidgetItem *item = currentItem();
+
+ QByteArray itemData;
+ QDataStream dataStream(&itemData, QIODevice::WriteOnly);
+ QPixmap pixmap = qVariantValue<QPixmap>(item->data(Qt::UserRole));
+ QPoint location = item->data(Qt::UserRole+1).toPoint();
+
+ dataStream << pixmap << location;
+
+ QMimeData *mimeData = new QMimeData;
+ mimeData->setData("image/x-puzzle-piece", itemData);
+
+ QDrag *drag = new QDrag(this);
+ drag->setMimeData(mimeData);
+ drag->setHotSpot(QPoint(pixmap.width()/2, pixmap.height()/2));
+ drag->setPixmap(pixmap);
+
+ if (drag->exec(Qt::MoveAction) == Qt::MoveAction)
+ delete takeItem(row(item));
+}
diff --git a/examples/draganddrop/puzzle/pieceslist.h b/examples/draganddrop/puzzle/pieceslist.h
new file mode 100644
index 0000000..26685e3
--- /dev/null
+++ b/examples/draganddrop/puzzle/pieceslist.h
@@ -0,0 +1,62 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the examples of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain
+** additional rights. These rights are described in the Nokia Qt LGPL
+** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef PIECESLIST_H
+#define PIECESLIST_H
+
+#include <QListWidget>
+
+class PiecesList : public QListWidget
+{
+ Q_OBJECT
+
+public:
+ PiecesList(QWidget *parent = 0);
+ void addPiece(QPixmap pixmap, QPoint location);
+
+protected:
+ void dragEnterEvent(QDragEnterEvent *event);
+ void dragMoveEvent(QDragMoveEvent *event);
+ void dropEvent(QDropEvent *event);
+ void startDrag(Qt::DropActions supportedActions);
+};
+
+#endif
diff --git a/examples/draganddrop/puzzle/puzzle.pro b/examples/draganddrop/puzzle/puzzle.pro
new file mode 100644
index 0000000..26d2350
--- /dev/null
+++ b/examples/draganddrop/puzzle/puzzle.pro
@@ -0,0 +1,20 @@
+HEADERS = mainwindow.h \
+ pieceslist.h \
+ puzzlewidget.h
+RESOURCES = puzzle.qrc
+SOURCES = main.cpp \
+ mainwindow.cpp \
+ pieceslist.cpp \
+ puzzlewidget.cpp
+
+# install
+target.path = $$[QT_INSTALL_EXAMPLES]/draganddrop/puzzle
+sources.files = $$SOURCES $$HEADERS $$RESOURCES *.pro *.jpg
+sources.path = $$[QT_INSTALL_EXAMPLES]/draganddrop/puzzle
+INSTALLS += target sources
+
+wince*: {
+ addFile.sources = example.jpg
+ addFile.path = .
+ DEPLOYMENT += addFile
+}
diff --git a/examples/draganddrop/puzzle/puzzle.qrc b/examples/draganddrop/puzzle/puzzle.qrc
new file mode 100644
index 0000000..4076cec
--- /dev/null
+++ b/examples/draganddrop/puzzle/puzzle.qrc
@@ -0,0 +1,5 @@
+<!DOCTYPE RCC><RCC version="1.0">
+<qresource prefix="/images">
+ <file>example.jpg</file>
+</qresource>
+</RCC>
diff --git a/examples/draganddrop/puzzle/puzzlewidget.cpp b/examples/draganddrop/puzzle/puzzlewidget.cpp
new file mode 100644
index 0000000..8548db5
--- /dev/null
+++ b/examples/draganddrop/puzzle/puzzlewidget.cpp
@@ -0,0 +1,205 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the examples of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain
+** additional rights. These rights are described in the Nokia Qt LGPL
+** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include <QtGui>
+
+#include "puzzlewidget.h"
+
+PuzzleWidget::PuzzleWidget(QWidget *parent)
+ : QWidget(parent)
+{
+ setAcceptDrops(true);
+ setMinimumSize(400, 400);
+ setMaximumSize(400, 400);
+}
+
+void PuzzleWidget::clear()
+{
+ pieceLocations.clear();
+ piecePixmaps.clear();
+ pieceRects.clear();
+ highlightedRect = QRect();
+ inPlace = 0;
+ update();
+}
+
+void PuzzleWidget::dragEnterEvent(QDragEnterEvent *event)
+{
+ if (event->mimeData()->hasFormat("image/x-puzzle-piece"))
+ event->accept();
+ else
+ event->ignore();
+}
+
+void PuzzleWidget::dragLeaveEvent(QDragLeaveEvent *event)
+{
+ QRect updateRect = highlightedRect;
+ highlightedRect = QRect();
+ update(updateRect);
+ event->accept();
+}
+
+void PuzzleWidget::dragMoveEvent(QDragMoveEvent *event)
+{
+ QRect updateRect = highlightedRect.unite(targetSquare(event->pos()));
+
+ if (event->mimeData()->hasFormat("image/x-puzzle-piece")
+ && findPiece(targetSquare(event->pos())) == -1) {
+
+ highlightedRect = targetSquare(event->pos());
+ event->setDropAction(Qt::MoveAction);
+ event->accept();
+ } else {
+ highlightedRect = QRect();
+ event->ignore();
+ }
+
+ update(updateRect);
+}
+
+void PuzzleWidget::dropEvent(QDropEvent *event)
+{
+ if (event->mimeData()->hasFormat("image/x-puzzle-piece")
+ && findPiece(targetSquare(event->pos())) == -1) {
+
+ QByteArray pieceData = event->mimeData()->data("image/x-puzzle-piece");
+ QDataStream dataStream(&pieceData, QIODevice::ReadOnly);
+ QRect square = targetSquare(event->pos());
+ QPixmap pixmap;
+ QPoint location;
+ dataStream >> pixmap >> location;
+
+ pieceLocations.append(location);
+ piecePixmaps.append(pixmap);
+ pieceRects.append(square);
+
+ highlightedRect = QRect();
+ update(square);
+
+ event->setDropAction(Qt::MoveAction);
+ event->accept();
+
+ if (location == QPoint(square.x()/80, square.y()/80)) {
+ inPlace++;
+ if (inPlace == 25)
+ emit puzzleCompleted();
+ }
+ } else {
+ highlightedRect = QRect();
+ event->ignore();
+ }
+}
+
+int PuzzleWidget::findPiece(const QRect &pieceRect) const
+{
+ for (int i = 0; i < pieceRects.size(); ++i) {
+ if (pieceRect == pieceRects[i]) {
+ return i;
+ }
+ }
+ return -1;
+}
+
+void PuzzleWidget::mousePressEvent(QMouseEvent *event)
+{
+ QRect square = targetSquare(event->pos());
+ int found = findPiece(square);
+
+ if (found == -1)
+ return;
+
+ QPoint location = pieceLocations[found];
+ QPixmap pixmap = piecePixmaps[found];
+ pieceLocations.removeAt(found);
+ piecePixmaps.removeAt(found);
+ pieceRects.removeAt(found);
+
+ if (location == QPoint(square.x()/80, square.y()/80))
+ inPlace--;
+
+ update(square);
+
+ QByteArray itemData;
+ QDataStream dataStream(&itemData, QIODevice::WriteOnly);
+
+ dataStream << pixmap << location;
+
+ QMimeData *mimeData = new QMimeData;
+ mimeData->setData("image/x-puzzle-piece", itemData);
+
+ QDrag *drag = new QDrag(this);
+ drag->setMimeData(mimeData);
+ drag->setHotSpot(event->pos() - square.topLeft());
+ drag->setPixmap(pixmap);
+
+ if (!(drag->exec(Qt::MoveAction) == Qt::MoveAction)) {
+ pieceLocations.insert(found, location);
+ piecePixmaps.insert(found, pixmap);
+ pieceRects.insert(found, square);
+ update(targetSquare(event->pos()));
+
+ if (location == QPoint(square.x()/80, square.y()/80))
+ inPlace++;
+ }
+}
+
+void PuzzleWidget::paintEvent(QPaintEvent *event)
+{
+ QPainter painter;
+ painter.begin(this);
+ painter.fillRect(event->rect(), Qt::white);
+
+ if (highlightedRect.isValid()) {
+ painter.setBrush(QColor("#ffcccc"));
+ painter.setPen(Qt::NoPen);
+ painter.drawRect(highlightedRect.adjusted(0, 0, -1, -1));
+ }
+
+ for (int i = 0; i < pieceRects.size(); ++i) {
+ painter.drawPixmap(pieceRects[i], piecePixmaps[i]);
+ }
+ painter.end();
+}
+
+const QRect PuzzleWidget::targetSquare(const QPoint &position) const
+{
+ return QRect(position.x()/80 * 80, position.y()/80 * 80, 80, 80);
+}
diff --git a/examples/draganddrop/puzzle/puzzlewidget.h b/examples/draganddrop/puzzle/puzzlewidget.h
new file mode 100644
index 0000000..312e25f
--- /dev/null
+++ b/examples/draganddrop/puzzle/puzzlewidget.h
@@ -0,0 +1,86 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the examples of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain
+** additional rights. These rights are described in the Nokia Qt LGPL
+** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef PUZZLEWIDGET_H
+#define PUZZLEWIDGET_H
+
+#include <QList>
+#include <QPoint>
+#include <QPixmap>
+#include <QWidget>
+
+QT_BEGIN_NAMESPACE
+class QDragEnterEvent;
+class QDropEvent;
+class QMouseEvent;
+QT_END_NAMESPACE
+
+class PuzzleWidget : public QWidget
+{
+ Q_OBJECT
+
+public:
+ PuzzleWidget(QWidget *parent = 0);
+ void clear();
+
+signals:
+ void puzzleCompleted();
+
+protected:
+ void dragEnterEvent(QDragEnterEvent *event);
+ void dragLeaveEvent(QDragLeaveEvent *event);
+ void dragMoveEvent(QDragMoveEvent *event);
+ void dropEvent(QDropEvent *event);
+ void mousePressEvent(QMouseEvent *event);
+ void paintEvent(QPaintEvent *event);
+
+private:
+ int findPiece(const QRect &pieceRect) const;
+ const QRect targetSquare(const QPoint &position) const;
+
+ QList<QPixmap> piecePixmaps;
+ QList<QRect> pieceRects;
+ QList<QPoint> pieceLocations;
+ QRect highlightedRect;
+ int inPlace;
+};
+
+#endif
generated by cgit v0.12 at 2024-12-25 17:55:52 (GMT)