Enable basic drag and drop support for the Places Panel

The dropping has not been implemented yet, however in the context of
this step the creating of the drag-pixmap is now forwarded to
the item-widgets. This allows creating some optimized dragging-pixmaps
e.g. for the details-view, where only the name and icon should
be provided as drag-pixmap.

1 files changed, 26 insertions, 0 deletions

diff --git a/src/kitemviews/kstandarditemlistwidget.cpp b/src/kitemviews/kstandarditemlistwidget.cpp
index 3f470b8cf..0cd11d363 100644
--- a/src/kitemviews/kstandarditemlistwidget.cpp
+++ b/src/kitemviews/kstandarditemlistwidget.cpp
@@ -405,6 +405,32 @@ QRectF KStandardItemListWidget::selectionToggleRect() const
     return QRectF(pos, QSizeF(toggleSize, toggleSize));
 }
 
+QPixmap KStandardItemListWidget::createDragPixmap(const QStyleOptionGraphicsItem* option,
+                                                  QWidget* widget)
+{
+    QPixmap pixmap = KItemListWidget::createDragPixmap(option, widget);
+    if (m_layout != DetailsLayout || styleOption().extendedSelectionRegion) {
+        return pixmap;
+    }
+
+    // Only return the content of the text-column as pixmap
+    const int leftClip = m_pixmapPos.x();
+
+    const TextInfo* textInfo = m_textInfo.value("text");
+    const int rightClip = textInfo->pos.x() +
+                          textInfo->staticText.size().width() +
+                          2 * styleOption().padding;
+
+    QPixmap clippedPixmap(rightClip - leftClip + 1, pixmap.height());
+    clippedPixmap.fill(Qt::transparent);
+
+    QPainter painter(&clippedPixmap);
+    painter.drawPixmap(-leftClip, 0, pixmap);
+
+    return clippedPixmap;
+}
+
+
 KItemListWidgetInformant* KStandardItemListWidget::createInformant()
 {
     return new KStandardItemListWidgetInformant();