IconView: Deselect items that are hidden by the filter

during selectAll and invertSelection
This resolves bug 2750

Signed-off-by: Slávek Banko <slavek.banko@axis.cz>
(cherry picked from commit 057d9fe7a4)

src/iconview/qiconview.cpp

@@ -3867,11 +3867,11 @@ void QIconView::selectAll( bool select )
 	        rr = rr.unite( item->rect() );
 	        changed = TRUE;
 	    }
-	    else {
-	        if ( FALSE != item->isSelected() ) {
-	            item->setSelected( FALSE, TRUE );
-	            changed = TRUE;
-	        }
+	}
+	else {
+	    if ( FALSE != item->isSelected() ) {
+	        item->setSelected( FALSE, TRUE );
+	        changed = TRUE;
 	    }
 	}
     }
@@ -3901,8 +3901,16 @@ void QIconView::invertSelection()
     bool b = signalsBlocked();
     blockSignals( TRUE );
     QIconViewItem *item = d->firstItem;
-    for ( ; item; item = item->next )
-	item->setSelected( !item->isSelected(), TRUE );
+    for ( ; item; item = item->next ) {
+        if (item->isVisible()) {
+            item->setSelected( !item->isSelected(), TRUE );
+        }
+        else {
+            if ( FALSE != item->isSelected() ) {
+                item->setSelected( FALSE, TRUE );
+            }
+        }
+    }
     blockSignals( b );
     emit selectionChanged();
 }