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/****************************************************************************
**
** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
** Contact: Qt Software Information (qt-info@nokia.com)
**
** This file is part of the example classes of the Qt Toolkit.
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#include <QtGui>
#include "draglabel.h"
#include "dragwidget.h"
DragWidget::DragWidget(QWidget *parent)
: QWidget(parent)
{
QFile dictionaryFile(":/dictionary/words.txt");
dictionaryFile.open(QIODevice::ReadOnly);
QTextStream inputStream(&dictionaryFile);
int x = 5;
int y = 5;
while (!inputStream.atEnd()) {
QString word;
inputStream >> word;
if (!word.isEmpty()) {
DragLabel *wordLabel = new DragLabel(word, this);
wordLabel->move(x, y);
wordLabel->show();
x += wordLabel->width() + 2;
if (x >= 195) {
x = 5;
y += wordLabel->height() + 2;
}
}
}
QPalette newPalette = palette();
newPalette.setColor(QPalette::Window, Qt::white);
setPalette(newPalette);
setAcceptDrops(true);
setMinimumSize(400, qMax(200, y));
setWindowTitle(tr("Draggable Text"));
}
void DragWidget::dragEnterEvent(QDragEnterEvent *event)
{
if (event->mimeData()->hasText()) {
if (children().contains(event->source())) {
event->setDropAction(Qt::MoveAction);
event->accept();
} else {
event->acceptProposedAction();
}
} else {
event->ignore();
}
}
void DragWidget::dropEvent(QDropEvent *event)
{
if (event->mimeData()->hasText()) {
const QMimeData *mime = event->mimeData();
QStringList pieces = mime->text().split(QRegExp("\\s+"),
QString::SkipEmptyParts);
QPoint position = event->pos();
QPoint hotSpot;
QList<QByteArray> hotSpotPos = mime->data("application/x-hotspot").split(' ');
if (hotSpotPos.size() == 2) {
hotSpot.setX(hotSpotPos.first().toInt());
hotSpot.setY(hotSpotPos.last().toInt());
}
foreach (QString piece, pieces) {
DragLabel *newLabel = new DragLabel(piece, this);
newLabel->move(position - hotSpot);
newLabel->show();
position += QPoint(newLabel->width(), 0);
}
if (children().contains(event->source())) {
event->setDropAction(Qt::MoveAction);
event->accept();
} else {
event->acceptProposedAction();
}
} else {
event->ignore();
}
}
Copyright © 2009 Nokia Corporation and/or its subsidiary(-ies) | Trademarks | Qt 4.5.0 |