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|
QPoint p;
line::line() : QWidget()
{ setMinimumSize(1000,400);
setAcceptDrops(true);
int j=0,k=0;
for(int i=0;i<10;i++)
{
QTextEdit *text1=new QTextEdit(this);
text1->setGeometry(0+j+k,100,80,150);
text1->setText("text");
j=j+text1->width();
k=2;
QLabel *lab = new QLabel(this);
lab->setPixmap(QPixmap("line.png"));
lab->setGeometry(j,100,2,150);
lab->show();
}
}
void line::dragEnterEvent(QDragEnterEvent *event)
{
if (event->mimeData()->hasFormat("application/x-dnditemdata")) {
if (event->source() == this) {
event->setDropAction(Qt::MoveAction);
p = event->pos();
event->accept();
} else {
event->acceptProposedAction();
}
} else {
event->ignore();
}
}
void line::dragMoveEvent(QDragMoveEvent *event)
{
if (event->mimeData()->hasFormat("application/x-dnditemdata")) {
if (event->source() == this) {
event->setDropAction(Qt::MoveAction);
event->accept();
} else {
event->acceptProposedAction();
}
} else {
event->ignore();
}
}
void line::dropEvent(QDropEvent *event)
{
if (event->mimeData()->hasFormat("application/x-dnditemdata")) {
QByteArray itemData = event->mimeData()->data("application/x-dnditemdata");
QDataStream dataStream(&itemData, QIODevice::ReadOnly);
QPixmap pixmap;
QPoint offset;
dataStream >> pixmap >> offset;
int x=event->pos().x();
int y=p.x();
int a=(y-x);
int w1=childAt((y-5),100)->width();
int w2=childAt((y+5),100)->width();
if(a<0)
{ childAt((y-5),100)->resize((w1+ a),150);
childAt((y+5),100)->resize((w2+a),150);
childAt((y+5),100)->move(x,100);
}
else
{ childAt((y+5),100)->resize((w2-a),150);
childAt((y+5),100)->move(x,100);
childAt((y-5),100)->resize((w1-a),150);
}
QLabel *newIcon = new QLabel(this);
newIcon->setPixmap(pixmap);
newIcon->move(((event->pos().x())-offset.x()),100);
newIcon->show();
newIcon->setAttribute(Qt::WA_DeleteOnClose);
if (event->source() == this) {
event->setDropAction(Qt::MoveAction);
event->accept();}
else {
event->acceptProposedAction();}
} else {
event->ignore();
}
}
//! [1]
void line::mousePressEvent(QMouseEvent *event)
{
QLabel *child = static_cast<QLabel*>(childAt(event->pos()));
if (!child)
return;
QPixmap pixmap = *child->pixmap();
QByteArray itemData;
QDataStream dataStream(&itemData, QIODevice::WriteOnly);
dataStream << pixmap << QPoint(event->pos() - child->pos());
//! [1]
//! [2]
QMimeData *mimeData = new QMimeData;
mimeData->setData("application/x-dnditemdata", itemData);
//! [2]
//! [3]
QDrag *drag = new QDrag(this);
drag->setMimeData(mimeData);
drag->setPixmap(pixmap);
drag->setHotSpot(event->pos() - child->pos());
//! [3]
QPixmap tempPixmap = pixmap;
QPainter painter;
painter.begin(&tempPixmap);
painter.fillRect(pixmap.rect(), QColor(127, 127, 127, 127));
painter.end();
child->setPixmap(tempPixmap);
if (drag->exec(Qt::CopyAction | Qt::MoveAction, Qt::CopyAction) == Qt::MoveAction)
child->close();
else {
child->show();
child->setPixmap(pixmap);
}
} |
