Widgets/GraphicsView examples: cleanup

Cleanup GraphicsView examples with the help of clang-tidy
 - modernize-use-nullptr
 - modernize-use-default-member-init
 - modernize-use-override.IgnoreDestructors
 - Some QList -> QVector changes
 - use nullptr
 - use normalized includes, remove unused includes
 - fix style

Change-Id: I79347e55bfde52f6ae7749cc7093fbd442044020
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@qt.io>

1 files changed, 7 insertions, 8 deletions

diff --git a/examples/widgets/graphicsview/dragdroprobot/robot.cpp b/examples/widgets/graphicsview/dragdroprobot/robot.cpp
index cc70366872..7457dabf8a 100644
--- a/examples/widgets/graphicsview/dragdroprobot/robot.cpp
+++ b/examples/widgets/graphicsview/dragdroprobot/robot.cpp
@@ -48,13 +48,17 @@
 **
 ****************************************************************************/
 
-#include <QtWidgets>
-
 #include "robot.h"
 
+#include <QGraphicsSceneDragDropEvent>
+#include <QMimeData>
+#include <QPainter>
+#include <QParallelAnimationGroup>
+#include <QPropertyAnimation>
+
 //! [0]
 RobotPart::RobotPart(QGraphicsItem *parent)
-    : QGraphicsObject(parent), color(Qt::lightGray), dragOver(false)
+    : QGraphicsObject(parent), color(Qt::lightGray) 
 {
     setAcceptDrops(true);
 }
@@ -157,11 +161,6 @@ void RobotHead::dropEvent(QGraphicsSceneDragDropEvent *event)
 }
 //! [8]
 
-RobotTorso::RobotTorso(QGraphicsItem *parent)
-    : RobotPart(parent)
-{
-}
-
 QRectF RobotTorso::boundingRect() const
 {
     return QRectF(-30, -20, 60, 60);