From db552079bebc5ac7273ad8389a3dfd738445dbfc Mon Sep 17 00:00:00 2001
From: =?utf8?q?Rafael=20Fern=C3=A1ndez=20L=C3=B3pez?= <ereslibre@kde.org>
Date: Tue, 18 Sep 2007 16:33:17 +0000
Subject: [PATCH] Fix selections problems (like flickering). Click on category
 select/deselects all items inside it. Ctrl+Click categories lets you add
 categories to already created selections, as well as inverting selections
 inside the same category.

CCMAIL: peter.penz@gmx.at

svn path=/trunk/KDE/kdebase/apps/; revision=714051
---
 src/kcategorizedview.cpp | 27 ++++++++++++++++++++-------
 1 file changed, 20 insertions(+), 7 deletions(-)

diff --git a/src/kcategorizedview.cpp b/src/kcategorizedview.cpp
index e88e6a383..e1597849a 100644
--- a/src/kcategorizedview.cpp
+++ b/src/kcategorizedview.cpp
@@ -768,20 +768,22 @@ void KCategorizedView::setSelection(const QRect &rect,
     if (!flags)
         return;
 
-    selectionModel()->clear();
-
     if (flags & QItemSelectionModel::Clear)
     {
-        d->lastSelection = QItemSelection();
+        if (!rect.intersects(d->categoryVisualRect(d->hoveredCategory)))
+        {
+            d->lastSelection = QItemSelection();
+        }
     }
 
-    QModelIndexList dirtyIndexes = d->intersectionSet(rect);
+    selectionModel()->clear();
 
-    QItemSelection selection;
+    QModelIndexList dirtyIndexes = d->intersectionSet(rect);
 
     if (!dirtyIndexes.count())
     {
-        if (d->lastSelection.count())
+        if (!d->lastSelection.isEmpty() &&
+            (rect.intersects(d->categoryVisualRect(d->hoveredCategory)) || d->mouseButtonPressed))
         {
             selectionModel()->select(d->lastSelection, flags);
         }
@@ -789,6 +791,8 @@ void KCategorizedView::setSelection(const QRect &rect,
         return;
     }
 
+    QItemSelection selection;
+
     if (!d->mouseButtonPressed)
     {
         selection = QItemSelection(dirtyIndexes[0], dirtyIndexes[0]);
@@ -924,6 +928,7 @@ void KCategorizedView::mouseReleaseEvent(QMouseEvent *event)
     initialPressPosition.setX(initialPressPosition.x() + horizontalOffset());
 
     QItemSelection selection;
+    QItemSelection deselection;
 
     if (initialPressPosition == d->initialPressPosition)
     {
@@ -935,10 +940,18 @@ void KCategorizedView::mouseReleaseEvent(QMouseEvent *event)
                 {
                     QModelIndex selectIndex = index.model()->index(index.row(), 0);
 
-                    selection << QItemSelectionRange(selectIndex);
+                    if (!d->lastSelection.contains(selectIndex))
+                    {
+                        selection << QItemSelectionRange(selectIndex);
+                    }
+                    else
+                    {
+                        deselection << QItemSelectionRange(selectIndex);
+                    }
                 }
 
                 selectionModel()->select(selection, QItemSelectionModel::Select);
+                selectionModel()->select(deselection, QItemSelectionModel::Deselect);
 
                 break;
             }
-- 
2.47.3