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Diffstat (limited to 'examples/widgets/draganddrop/puzzle/pieceslist.cpp')
-rw-r--r-- | examples/widgets/draganddrop/puzzle/pieceslist.cpp | 134 |
1 files changed, 0 insertions, 134 deletions
diff --git a/examples/widgets/draganddrop/puzzle/pieceslist.cpp b/examples/widgets/draganddrop/puzzle/pieceslist.cpp deleted file mode 100644 index 7846d37ed2..0000000000 --- a/examples/widgets/draganddrop/puzzle/pieceslist.cpp +++ /dev/null @@ -1,134 +0,0 @@ -/**************************************************************************** -** -** 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 "pieceslist.h" - -#include <QDrag> -#include <QDragEnterEvent> -#include <QMimeData> - -PiecesList::PiecesList(int pieceSize, QWidget *parent) - : QListWidget(parent), m_PieceSize(pieceSize) -{ - setDragEnabled(true); - setViewMode(QListView::IconMode); - setIconSize(QSize(m_PieceSize, m_PieceSize)); - setSpacing(10); - setAcceptDrops(true); - setDropIndicatorShown(true); -} - -void PiecesList::dragEnterEvent(QDragEnterEvent *event) -{ - if (event->mimeData()->hasFormat(PiecesList::puzzleMimeType())) - event->accept(); - else - event->ignore(); -} - -void PiecesList::dragMoveEvent(QDragMoveEvent *event) -{ - if (event->mimeData()->hasFormat(PiecesList::puzzleMimeType())) { - event->setDropAction(Qt::MoveAction); - event->accept(); - } else { - event->ignore(); - } -} - -void PiecesList::dropEvent(QDropEvent *event) -{ - if (event->mimeData()->hasFormat(PiecesList::puzzleMimeType())) { - QByteArray pieceData = event->mimeData()->data(PiecesList::puzzleMimeType()); - 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(const QPixmap &pixmap, const 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 = qvariant_cast<QPixmap>(item->data(Qt::UserRole)); - QPoint location = item->data(Qt::UserRole+1).toPoint(); - - dataStream << pixmap << location; - - QMimeData *mimeData = new QMimeData; - mimeData->setData(PiecesList::puzzleMimeType(), 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)); -} |