Only store modified columns widths after the mouse button was released

This prevents that the new widths are written to disk multiple times in
quick succession, which can make column resizing quite slow.

BUG: 351846
REVIEW: 351846
FIXED-IN: 15.08.1

2 files changed, 4 insertions, 6 deletions

diff --git a/src/views/dolphinview.cpp b/src/views/dolphinview.cpp
index d3023585a..07b40dceb 100644
--- a/src/views/dolphinview.cpp
+++ b/src/views/dolphinview.cpp
@@ -177,8 +177,8 @@ DolphinView::DolphinView(const QUrl& url, QWidget* parent) :
             this, &DolphinView::slotVisibleRolesChangedByHeader);
     connect(m_view, &DolphinItemListView::roleEditingCanceled,
             this, &DolphinView::slotRoleEditingCanceled);
-    connect(m_view->header(), &KItemListHeader::columnWidthChanged,
-            this, &DolphinView::slotHeaderColumnWidthChanged);
+    connect(m_view->header(), &KItemListHeader::columnWidthChangeFinished,
+            this, &DolphinView::slotHeaderColumnWidthChangeFinished);
 
     KItemListSelectionManager* selectionManager = controller->selectionManager();
     connect(selectionManager, &KItemListSelectionManager::selectionChanged,
@@ -971,10 +971,8 @@ void DolphinView::slotHeaderContextMenuRequested(const QPointF& pos)
     delete menu;
 }
 
-void DolphinView::slotHeaderColumnWidthChanged(const QByteArray& role, qreal current, qreal previous)
+void DolphinView::slotHeaderColumnWidthChangeFinished(const QByteArray& role, qreal current)
 {
-    Q_UNUSED(previous);
-
     const QList<QByteArray> visibleRoles = m_view->visibleRoles();
 
     ViewProperties props(viewPropertiesUrl());
diff --git a/src/views/dolphinview.h b/src/views/dolphinview.h
index 24b560f10..d1a5d5005 100644
--- a/src/views/dolphinview.h
+++ b/src/views/dolphinview.h
@@ -566,7 +566,7 @@ private slots:
     void slotItemContextMenuRequested(int index, const QPointF& pos);
     void slotViewContextMenuRequested(const QPointF& pos);
     void slotHeaderContextMenuRequested(const QPointF& pos);
-    void slotHeaderColumnWidthChanged(const QByteArray& role, qreal current, qreal previous);
+    void slotHeaderColumnWidthChangeFinished(const QByteArray& role, qreal current);
     void slotItemHovered(int index);
     void slotItemUnhovered(int index);
     void slotItemDropEvent(int index, QGraphicsSceneDragDropEvent* event);