87274e272d
- Maemo/Symbian are no longer supported and QWidget-based examples are no longer supposed to run on mobile platforms, so, remove any Maemo/Symbian or mobile-specific code from source files and profiles. - Remove Maemo/Symbian vibration examples. - Change Q_WS_MAC/WIN to Q_OS_MAC/WIN where appropriate. Reviewed-by: Casper van Donderen <casper.vandonderen@nokia.com> Change-Id: I488a0adadb98934567aa6416206a80465c9c3a81 Reviewed-by: Friedemann Kleint <Friedemann.Kleint@nokia.com> Reviewed-by: Casper van Donderen <casper.vandonderen@nokia.com>
169 lines
5.3 KiB
C++
169 lines
5.3 KiB
C++
/****************************************************************************
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**
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** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
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** All rights reserved.
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** Contact: Nokia Corporation (qt-info@nokia.com)
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**
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** This file is part of the examples of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:BSD$
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** You may use this file under the terms of the BSD license as follows:
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**
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** "Redistribution and use in source and binary forms, with or without
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** modification, are permitted provided that the following conditions are
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** met:
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** * Redistributions of source code must retain the above copyright
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** notice, this list of conditions and the following disclaimer.
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** * Redistributions in binary form must reproduce the above copyright
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** notice, this list of conditions and the following disclaimer in
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** the documentation and/or other materials provided with the
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** distribution.
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** * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor
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** the names of its contributors may be used to endorse or promote
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** products derived from this software without specific prior written
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** permission.
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**
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** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#include <QtWidgets>
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#include "dragwidget.h"
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//! [0]
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DragWidget::DragWidget(QWidget *parent)
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: QFrame(parent)
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{
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setMinimumSize(200, 200);
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setFrameStyle(QFrame::Sunken | QFrame::StyledPanel);
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setAcceptDrops(true);
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QLabel *boatIcon = new QLabel(this);
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boatIcon->setPixmap(QPixmap(":/images/boat.png"));
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boatIcon->move(10, 10);
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boatIcon->show();
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boatIcon->setAttribute(Qt::WA_DeleteOnClose);
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QLabel *carIcon = new QLabel(this);
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carIcon->setPixmap(QPixmap(":/images/car.png"));
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carIcon->move(100, 10);
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carIcon->show();
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carIcon->setAttribute(Qt::WA_DeleteOnClose);
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QLabel *houseIcon = new QLabel(this);
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houseIcon->setPixmap(QPixmap(":/images/house.png"));
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houseIcon->move(10, 80);
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houseIcon->show();
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houseIcon->setAttribute(Qt::WA_DeleteOnClose);
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}
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//! [0]
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void DragWidget::dragEnterEvent(QDragEnterEvent *event)
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{
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if (event->mimeData()->hasFormat("application/x-dnditemdata")) {
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if (event->source() == this) {
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event->setDropAction(Qt::MoveAction);
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event->accept();
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} else {
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event->acceptProposedAction();
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}
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} else {
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event->ignore();
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}
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}
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void DragWidget::dragMoveEvent(QDragMoveEvent *event)
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{
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if (event->mimeData()->hasFormat("application/x-dnditemdata")) {
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if (event->source() == this) {
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event->setDropAction(Qt::MoveAction);
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event->accept();
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} else {
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event->acceptProposedAction();
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}
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} else {
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event->ignore();
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}
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}
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void DragWidget::dropEvent(QDropEvent *event)
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{
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if (event->mimeData()->hasFormat("application/x-dnditemdata")) {
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QByteArray itemData = event->mimeData()->data("application/x-dnditemdata");
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QDataStream dataStream(&itemData, QIODevice::ReadOnly);
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QPixmap pixmap;
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QPoint offset;
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dataStream >> pixmap >> offset;
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QLabel *newIcon = new QLabel(this);
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newIcon->setPixmap(pixmap);
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newIcon->move(event->pos() - offset);
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newIcon->show();
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newIcon->setAttribute(Qt::WA_DeleteOnClose);
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if (event->source() == this) {
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event->setDropAction(Qt::MoveAction);
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event->accept();
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} else {
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event->acceptProposedAction();
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}
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} else {
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event->ignore();
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}
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}
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//! [1]
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void DragWidget::mousePressEvent(QMouseEvent *event)
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{
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QLabel *child = static_cast<QLabel*>(childAt(event->pos()));
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if (!child)
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return;
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QPixmap pixmap = *child->pixmap();
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QByteArray itemData;
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QDataStream dataStream(&itemData, QIODevice::WriteOnly);
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dataStream << pixmap << QPoint(event->pos() - child->pos());
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//! [1]
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//! [2]
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QMimeData *mimeData = new QMimeData;
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mimeData->setData("application/x-dnditemdata", itemData);
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//! [2]
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//! [3]
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QDrag *drag = new QDrag(this);
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drag->setMimeData(mimeData);
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drag->setPixmap(pixmap);
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drag->setHotSpot(event->pos() - child->pos());
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//! [3]
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QPixmap tempPixmap = pixmap;
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QPainter painter;
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painter.begin(&tempPixmap);
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painter.fillRect(pixmap.rect(), QColor(127, 127, 127, 127));
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painter.end();
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child->setPixmap(tempPixmap);
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if (drag->exec(Qt::CopyAction | Qt::MoveAction, Qt::CopyAction) == Qt::MoveAction)
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child->close();
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else {
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child->show();
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child->setPixmap(pixmap);
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}
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}
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