89 lines
2.3 KiB
C++
89 lines
2.3 KiB
C++
|
#include "qttreewidget.h"
|
|||
|
|
#include <QApplication>
|
|||
|
|
#include <QMouseEvent>
|
|||
|
|
#include <QDragEnterEvent>
|
|||
|
|
#include <QDropEvent>
|
|||
|
|
#include <QDataStream>
|
|||
|
|
#include <QMimeData>
|
|||
|
|
#include <QDrag>
|
|||
|
|
#include <QPoint>
|
|||
|
|
#include <QTreeWidgetItem>
|
|||
|
|
#include <QPainter>
|
|||
|
|
|
|||
|
|
#define DRAG_DATA QStringLiteral("drag/treeitem")
|
|||
|
|
|
|||
|
|
QtTreeWidget::QtTreeWidget(QWidget* parent) : QTreeWidget(parent)
|
|||
|
|
{
|
|||
|
|
this->setDropIndicatorShown(true);
|
|||
|
|
this->setDragEnabled(true);
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
QtTreeWidget::~QtTreeWidget()
|
|||
|
|
{
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
void QtTreeWidget::dragEnterEvent(QDragEnterEvent* event)
|
|||
|
|
{
|
|||
|
|
if (event->mimeData()->hasFormat(DRAG_DATA))
|
|||
|
|
event->accept();
|
|||
|
|
else
|
|||
|
|
{
|
|||
|
|
event->ignore();
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
void QtTreeWidget::dragMoveEvent(QDragMoveEvent* event)
|
|||
|
|
{
|
|||
|
|
if (event->mimeData()->hasFormat(DRAG_DATA))
|
|||
|
|
{
|
|||
|
|
event->setDropAction(Qt::MoveAction);
|
|||
|
|
event->accept();
|
|||
|
|
}
|
|||
|
|
else
|
|||
|
|
{
|
|||
|
|
event->ignore();
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
void QtTreeWidget::startDrag(Qt::DropActions supportedActions)
|
|||
|
|
{
|
|||
|
|
QTreeWidgetItem* item = currentItem();
|
|||
|
|
if (NULL == item || item->childCount())
|
|||
|
|
return;
|
|||
|
|
QByteArray itemData;
|
|||
|
|
QDataStream dataStream(&itemData, QIODevice::WriteOnly);
|
|||
|
|
QIcon icon = item->icon(0);
|
|||
|
|
//QSize size = icon.availableSizes().at(0);
|
|||
|
|
QSize size = QSize(35, 35);
|
|||
|
|
QPixmap pixmap = icon.pixmap(0, size);
|
|||
|
|
dataStream << pixmap << item->text(0) << "列表属性自行添加";
|
|||
|
|
QMimeData* mimeData = new QMimeData;
|
|||
|
|
mimeData->setData(DRAG_DATA, itemData);
|
|||
|
|
QDrag* drag = new QDrag(this);
|
|||
|
|
QPixmap pixmapDrag = SetDragCurorPixmap(pixmap, item->text(0));
|
|||
|
|
drag->setMimeData(mimeData);
|
|||
|
|
drag->setHotSpot(QPoint(pixmapDrag.width() / 2, pixmapDrag.height() / 2));
|
|||
|
|
drag->setPixmap(pixmapDrag);
|
|||
|
|
drag->exec(Qt::MoveAction | Qt::CopyAction | Qt::ActionMask);
|
|||
|
|
//删除
|
|||
|
|
delete drag;
|
|||
|
|
drag = NULL;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
QPixmap QtTreeWidget::SetDragCurorPixmap(QPixmap pixmap, QString strText)
|
|||
|
|
{
|
|||
|
|
QPixmap pixmapItem(200, 42);
|
|||
|
|
pixmapItem.fill(Qt::transparent);
|
|||
|
|
QPainter painter(&pixmapItem);
|
|||
|
|
QFont font("Microsoft YaHei");
|
|||
|
|
font.setPixelSize(17);
|
|||
|
|
painter.setFont(font);
|
|||
|
|
painter.setPen("#333333");
|
|||
|
|
painter.setBrush(QColor("#ffffff"));
|
|||
|
|
painter.drawRect(1, 1, pixmapItem.width() - 2, pixmapItem.height() - 2);
|
|||
|
|
painter.drawPixmap(10, (pixmapItem.height() - pixmap.height() - 2) / 2, pixmap);
|
|||
|
|
//绘制文本
|
|||
|
|
painter.drawText(pixmap.width() + 20, 0, pixmapItem.width() - pixmap.width() - 20, pixmapItem.height(), Qt::AlignVCenter, strText);
|
|||
|
|
return pixmapItem;
|
|||
|
|
}
|