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

    /****************************************************************************
    **
    ** Copyright (C) 2005-2006 Trolltech ASA. All rights reserved.
    **
    ** This file is part of the example classes of the Qt Toolkit.
    **
    ** Licensees holding valid Qt Preview licenses may use this file in
    ** accordance with the Qt Preview License Agreement provided with the
    ** Software.
    **
    ** See http://www.trolltech.com/pricing.html or email sales@trolltech.com for
    ** information about Qt Commercial License Agreements.
    **
    ** Contact info@trolltech.com if any conditions of this licensing are
    ** not clear to you.
    **
    ** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
    ** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
    **
    ****************************************************************************/

    #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 {
                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);
    }