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| #include <QtWidgets>
#include "draglabel.h"
#include "dragwidget.h"
DragWidget::DragWidget(QWidget *parent)
: QWidget(parent)
{
setupAction();
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();
wordLabel->setAttribute(Qt::WA_DeleteOnClose);
x += wordLabel->width() + 2;
if (x >= 245) {
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 (event->source() == this) {
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();
newLabel->setAttribute(Qt::WA_DeleteOnClose);
position += QPoint(newLabel->width(), 0);
}
if (event->source() == this) {
event->setDropAction(Qt::MoveAction);
event->accept();
} else {
event->acceptProposedAction();
}
} else {
event->ignore();
}
foreach (QObject *child, children()) {
if (child->inherits("QWidget")) {
QWidget *widget = static_cast<QWidget *>(child);
if (!widget->isVisible())
widget->deleteLater();
}
}
}
void DragWidget::mousePressEvent(QMouseEvent *event)
{
QLabel *child = static_cast<QLabel*>(childAt(event->pos()));
if (!child)
return;
QPoint hotSpot = event->pos() - child->pos();
QMimeData *mimeData = new QMimeData;
mimeData->setText(child->text());
mimeData->setData("application/x-hotspot",
QByteArray::number(hotSpot.x()) + " " + QByteArray::number(hotSpot.y()));
QPixmap pixmap(child->size());
child->render(&pixmap);
QDrag *drag = new QDrag(this);
drag->setMimeData(mimeData);
drag->setPixmap(pixmap);
drag->setHotSpot(hotSpot);
Qt::DropAction dropAction = drag->exec(Qt::CopyAction | Qt::MoveAction, Qt::CopyAction);
if (dropAction == Qt::MoveAction)
child->close();
}
void DragWidget::mouseDoubleClickEvent(QMouseEvent *event)
{
QLabel *child = static_cast<QLabel*>(childAt(event->pos()));
if (!child)
return;
QPoint hotSpot = event->pos() - child->pos();
QMimeData *mimeData = new QMimeData;
mimeData->setText(child->text());
mimeData->setData("application/x-hotspot",
QByteArray::number(hotSpot.x()) + " " + QByteArray::number(hotSpot.y()));
QPixmap pixmap(child->size());
child->setTextInteractionFlags(Qt::TextEditorInteraction);
child->render(&pixmap);
/* Qt::TextFormat actiontext = child->setTextInteractionFlags(Qt::TextEditorInteraction);
if (actiontext == Qt::Key_Enter)
child->close();*/
QDrag *drag = new QDrag(this);
drag->setMimeData(mimeData);
drag->setPixmap(pixmap);
drag->setHotSpot(hotSpot);
/* Qt::DropAction dropAction = drag->exec(Qt::CopyAction | Qt::MoveAction, Qt::CopyAction);
if (dropAction == Qt::MoveAction)
child->close();*/
}
//Méthode pour définir l'action
void DragWidget::setupAction()
{
QAction *a;
a = new QAction(this);
a->setShortcut(Qt::CTRL + Qt::Key_P);
connect(a, SIGNAL(triggered()), this, SLOT(filePrintPreview()));
addAction(a);
}
//Méthode pour faire l'aperçu avant impression
void DragWidget::filePrintPreview()
{
#ifndef QT_NO_PRINTER
QPrinter *printer = new QPrinter(QPrinter::HighResolution);
printer->setPaperSize(QSizeF(8.5, 5.4), QPrinter::Inch);
QPrintPreviewDialog *preview = new QPrintPreviewDialog(printer, this);
connect(preview, SIGNAL(paintRequested(QPrinter*)), this, SLOT(printPreview(QPrinter*)));
preview->exec();
#endif
}
//Cette méthode permet de créer ce qu'on veut afficher dans l'aperçu avant impression
void DragWidget::printPreview(QPrinter *printer)
{
#ifdef QT_NO_PRINTER
Q_UNUSED(printer);
#else
textDocument = new QTextDocument;
textDocument->print(printer);
#endif
} |
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