Set the Details View colummns width to the preferred column width, by double-clicking the header grips.

BUG: 293315
FIXED-IN: 4.13
REVIEW: 115503

2 files changed, 17 insertions, 0 deletions

diff --git a/src/kitemviews/private/kitemlistheaderwidget.cpp b/src/kitemviews/private/kitemlistheaderwidget.cpp
index b55ba1eb5..1f210ab5a 100644
--- a/src/kitemviews/private/kitemlistheaderwidget.cpp
+++ b/src/kitemviews/private/kitemlistheaderwidget.cpp
@@ -327,6 +327,22 @@ void KItemListHeaderWidget::mouseMoveEvent(QGraphicsSceneMouseEvent* event)
     }
 }
 
+void KItemListHeaderWidget::mouseDoubleClickEvent(QGraphicsSceneMouseEvent* event)
+{
+    QGraphicsItem::mouseDoubleClickEvent(event);
+
+    const int roleIndex = roleIndexAt(event->pos());
+    if (roleIndex >= 0 && isAboveRoleGrip(event->pos(), roleIndex)) {
+        const QByteArray role = m_columns.at(roleIndex);
+
+        qreal previousWidth = columnWidth(role);
+        setColumnWidth(role, preferredColumnWidth(role));
+        qreal currentWidth = columnWidth(role);
+
+        emit columnWidthChanged(role, currentWidth, previousWidth);
+    }
+}
+
 void KItemListHeaderWidget::hoverEnterEvent(QGraphicsSceneHoverEvent* event)
 {
     QGraphicsWidget::hoverEnterEvent(event);
diff --git a/src/kitemviews/private/kitemlistheaderwidget.h b/src/kitemviews/private/kitemlistheaderwidget.h
index f8bba977b..b99f45f35 100644
--- a/src/kitemviews/private/kitemlistheaderwidget.h
+++ b/src/kitemviews/private/kitemlistheaderwidget.h
@@ -100,6 +100,7 @@ protected:
     virtual void mousePressEvent(QGraphicsSceneMouseEvent* event);
     virtual void mouseReleaseEvent(QGraphicsSceneMouseEvent* event);
     virtual void mouseMoveEvent(QGraphicsSceneMouseEvent* event);
+    virtual void mouseDoubleClickEvent(QGraphicsSceneMouseEvent* event);
     virtual void hoverEnterEvent(QGraphicsSceneHoverEvent* event);
     virtual void hoverLeaveEvent(QGraphicsSceneHoverEvent* event);
     virtual void hoverMoveEvent(QGraphicsSceneHoverEvent* event);