dropsitewindow.cpp Example File
draganddrop/dropsite/dropsitewindow.cpp

 /****************************************************************************
 **
 ** Copyright (C) 2010 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 <QtGui>

 #include "droparea.h"
 #include "dropsitewindow.h"

 DropSiteWindow::DropSiteWindow()
 {
     abstractLabel = new QLabel(tr("This example accepts drags from other "
                                   "applications and displays the MIME types "
                                   "provided by the drag object."));
     abstractLabel->setWordWrap(true);
     abstractLabel->adjustSize();

     dropArea = new DropArea;
     connect(dropArea, SIGNAL(changed(const QMimeData*)),
             this, SLOT(updateFormatsTable(const QMimeData*)));

     QStringList labels;
     labels << tr("Format") << tr("Content");

     formatsTable = new QTableWidget;
     formatsTable->setColumnCount(2);
     formatsTable->setEditTriggers(QAbstractItemView::NoEditTriggers);
     formatsTable->setHorizontalHeaderLabels(labels);
     formatsTable->horizontalHeader()->setStretchLastSection(true);

     clearButton = new QPushButton(tr("Clear"));
     quitButton = new QPushButton(tr("Quit"));

     buttonBox = new QDialogButtonBox;
     buttonBox->addButton(clearButton, QDialogButtonBox::ActionRole);
     buttonBox->addButton(quitButton, QDialogButtonBox::RejectRole);

     connect(quitButton, SIGNAL(pressed()), this, SLOT(close()));
     connect(clearButton, SIGNAL(pressed()), dropArea, SLOT(clear()));

     QVBoxLayout *mainLayout = new QVBoxLayout;
     mainLayout->addWidget(abstractLabel);
     mainLayout->addWidget(dropArea);
     mainLayout->addWidget(formatsTable);
     mainLayout->addWidget(buttonBox);
     setLayout(mainLayout);

     setWindowTitle(tr("Drop Site"));
     setMinimumSize(350, 500);
 }

 void DropSiteWindow::updateFormatsTable(const QMimeData *mimeData)
 {
     formatsTable->setRowCount(0);
     if (!mimeData)
         return;

     foreach (QString format, mimeData->formats()) {
         QTableWidgetItem *formatItem = new QTableWidgetItem(format);
         formatItem->setFlags(Qt::ItemIsEnabled);
         formatItem->setTextAlignment(Qt::AlignTop | Qt::AlignLeft);

         QString text;
         if (format == "text/plain") {
             text = mimeData->text().simplified();
         } else if (format == "text/html") {
             text = mimeData->html().simplified();
         } else if (format == "text/uri-list") {
             QList<QUrl> urlList = mimeData->urls();
             for (int i = 0; i < urlList.size() && i < 32; ++i)
                 text.append(urlList[i].toString() + " ");
         } else {
             QByteArray data = mimeData->data(format);
             for (int i = 0; i < data.size() && i < 32; ++i) {
                 QString hex = QString("%1").arg(uchar(data[i]), 2, 16,
                                                 QChar('0'))
                                            .toUpper();
                 text.append(hex + " ");
             }
         }

         int row = formatsTable->rowCount();
         formatsTable->insertRow(row);
         formatsTable->setItem(row, 0, new QTableWidgetItem(format));
         formatsTable->setItem(row, 1, new QTableWidgetItem(text));
     }

     formatsTable->resizeColumnToContents(0);
 }