diff -r 000000000000 -r 1918ee327afb examples/draganddrop/dropsite/droparea.cpp --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/examples/draganddrop/dropsite/droparea.cpp Mon Jan 11 14:00:40 2010 +0000 @@ -0,0 +1,127 @@ +/**************************************************************************** +** +** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). +** All rights reserved. +** Contact: Nokia Corporation (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 Technology Preview License Agreement accompanying +** this package. +** +** 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 1.1, included in the file LGPL_EXCEPTION.txt in this package. +** +** If you have questions regarding the use of this file, please contact +** Nokia at qt-info@nokia.com. +** +** +** +** +** +** +** +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include + +#include "droparea.h" + +//! [DropArea constructor] +DropArea::DropArea(QWidget *parent) + : QLabel(parent) +{ + setMinimumSize(200, 200); + setFrameStyle(QFrame::Sunken | QFrame::StyledPanel); + setAlignment(Qt::AlignCenter); + setAcceptDrops(true); + setAutoFillBackground(true); + clear(); +} +//! [DropArea constructor] + +//! [dragEnterEvent() function] +void DropArea::dragEnterEvent(QDragEnterEvent *event) +{ + setText(tr("")); + setBackgroundRole(QPalette::Highlight); + + event->acceptProposedAction(); + emit changed(event->mimeData()); +} +//! [dragEnterEvent() function] + +//! [dragMoveEvent() function] +void DropArea::dragMoveEvent(QDragMoveEvent *event) +{ + event->acceptProposedAction(); +} +//! [dragMoveEvent() function] + +//! [dropEvent() function part1] +void DropArea::dropEvent(QDropEvent *event) +{ + const QMimeData *mimeData = event->mimeData(); +//! [dropEvent() function part1] + +//! [dropEvent() function part2] + if (mimeData->hasImage()) { + setPixmap(qvariant_cast(mimeData->imageData())); + } else if (mimeData->hasHtml()) { + setText(mimeData->html()); + setTextFormat(Qt::RichText); + } else if (mimeData->hasText()) { + setText(mimeData->text()); + setTextFormat(Qt::PlainText); + } else if (mimeData->hasUrls()) { + QList urlList = mimeData->urls(); + QString text; + for (int i = 0; i < urlList.size() && i < 32; ++i) { + QString url = urlList.at(i).path(); + text += url + QString("\n"); + } + setText(text); + } else { + setText(tr("Cannot display data")); + } +//! [dropEvent() function part2] + +//! [dropEvent() function part3] + setBackgroundRole(QPalette::Dark); + event->acceptProposedAction(); +} +//! [dropEvent() function part3] + +//! [dragLeaveEvent() function] +void DropArea::dragLeaveEvent(QDragLeaveEvent *event) +{ + clear(); + event->accept(); +} +//! [dragLeaveEvent() function] + +//! [clear() function] +void DropArea::clear() +{ + setText(tr("")); + setBackgroundRole(QPalette::Dark); + + emit changed(); +} +//! [clear() function]