add: customTabwidget set drag action.

Gui/Control/cusTableWidget.cpp

@@ -0,0 +1,67 @@
+#include "cusTableWidget.h"
+#include <QDrag>
+#include <QMimeData>
+#include <QPainter>
+
+CustomTableWidget::CustomTableWidget(QWidget* parent)
+{
+}
+
+CustomTableWidget::~CustomTableWidget()
+{
+}
+
+void CustomTableWidget::dropEvent(QDropEvent* event)
+{
+    if (!event->mimeData()->hasFormat("application/x-custom-data")) {
+        event->ignore();
+        return;
+    }
+
+    QModelIndex index = indexAt(event->pos());
+    if (!index.isValid()) {
+        event->ignore();
+        return;
+    }
+
+    QString data = QString::fromUtf8(event->mimeData()->data("application/x-custom-data"));
+    QStringList items = data.split(",");
+
+    //emit customDropRequested(items.first(), index.row(), index.column(), event->source());
+
+    event->acceptProposedAction();
+}
+
+void CustomTableWidget::dragMoveEvent(QDragMoveEvent* event)
+{
+    const QTableWidget* source = qobject_cast<const QTableWidget*>(event->source());
+    if (source == this) {
+        event->ignore();
+        return;
+    }
+    if (event->mimeData()->hasFormat("application/x-custom-data")) {
+        event->setDropAction(Qt::MoveAction);
+        event->acceptProposedAction();
+    } else {
+        event->ignore();
+    }
+}
+
+void CustomTableWidget::startDrag(Qt::DropActions supportedActions)
+{
+    QDrag* drag = new QDrag(this);
+    QMimeData* mimeData = new QMimeData;
+
+    QStringList selectedTexts;
+    foreach (QTableWidgetItem* item, selectedItems()) {
+        selectedTexts << item->text();
+    }
+    mimeData->setData("application/x-custom-data", selectedTexts.join(",").toUtf8());
+    drag->setMimeData(mimeData);
+    QPixmap pixmap(100, 50);
+    pixmap.fill(Qt::lightGray);
+    QPainter painter(&pixmap);
+    painter.drawText(pixmap.rect(), Qt::AlignCenter, QString("%1 ITEM").arg(selectedTexts.count()));
+    drag->setPixmap(pixmap);
+    drag->exec(supportedActions);
+}