dropsitewindow.cpp Example File
draganddrop/dropsite/dropsitewindow.cpp
/****************************************************************************
**
** Copyright (C) 2005-2005 Trolltech AS. All rights reserved.
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** This file is part of the documentation of the Qt Toolkit.
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#include <QtGui>
#include "dropsitewindow.h"
DropSiteWindow::DropSiteWindow(QWidget *parent)
: QWidget(parent)
{
abstractLabel = new QLabel(tr("The Drop Site example accepts drops from other "
"applications, and displays the MIME formats "
"provided by the drag object."));
abstractLabel->setWordWrap(true);
abstractLabel->adjustSize();
dropSiteWidget = new DropSiteWidget;
connect(dropSiteWidget, SIGNAL(changed(const QMimeData*)),
this, SLOT(updateSupportedFormats(const QMimeData*)));
supportedFormats = new QTableWidget(0, 2);
QStringList labels;
labels << tr("Format") << tr("Content");
supportedFormats->setHorizontalHeaderLabels(labels);
supportedFormats->horizontalHeader()->setStretchLastSection(true);
quitButton = new QPushButton(tr("Quit"));
connect(quitButton, SIGNAL(pressed()), this, SLOT(close()));
clearButton = new QPushButton(tr("Clear"));
connect(clearButton, SIGNAL(pressed()), dropSiteWidget, SLOT(clear()));
QHBoxLayout *buttonLayout = new QHBoxLayout;
buttonLayout->addStretch();
buttonLayout->addWidget(clearButton);
buttonLayout->addWidget(quitButton);
buttonLayout->addStretch();
layout = new QVBoxLayout;
layout->addWidget(abstractLabel);
layout->addWidget(dropSiteWidget);
layout->addWidget(supportedFormats);
layout->addLayout(buttonLayout);
setLayout(layout);
setMinimumSize(350, 500);
setWindowTitle(tr("Drop Site"));
}
void DropSiteWindow::resizeEvent(QResizeEvent *event)
{
supportedFormats->resizeColumnToContents(0);
QWidget::resizeEvent(event);
}
void DropSiteWindow::updateSupportedFormats(const QMimeData *mimeData)
{
supportedFormats->setRowCount(0);
if (!mimeData)
return;
QStringList formats = mimeData->formats();
foreach (QString format, formats)
{
QTableWidgetItem *formatItem = new QTableWidgetItem(format);
formatItem->setFlags(Qt::ItemIsEnabled);
formatItem->setTextAlignment(Qt::AlignTop);
QByteArray data = mimeData->data(format);
QTableWidgetItem *dataItem;
QString text = dropSiteWidget->createPlainText(data, format);
qApp->processEvents();
if (!text.isEmpty()) {
dataItem = new QTableWidgetItem(text);
} else {
QString hexdata = "";
foreach (uint byte, data) {
if (hexdata.length() < 128) {
QString hex = QString("%1").arg(byte, 2, 16, QLatin1Char('0')).toUpper();
hexdata.append(hex + " ");
}
}
dataItem = new QTableWidgetItem(hexdata);
}
dataItem->setFlags(Qt::ItemIsEnabled);
int row = supportedFormats->rowCount();
supportedFormats->insertRow(row);
supportedFormats->setItem(row, 0, formatItem);
supportedFormats->setItem(row, 1, dataItem);
QTableWidgetItem *index = new QTableWidgetItem(tr("%1").arg(row + 1));
supportedFormats->setVerticalHeaderItem(row, index);
}
supportedFormats->resizeColumnToContents(0);
}