From c40190856107cb46cb113b135b2dd67435372f17 Mon Sep 17 00:00:00 2001
From: wang-bin <wbsecg1@gmail.com>
Date: Sun, 11 Nov 2012 00:58:46 +0800
Subject: [PATCH] QGraphicsItem::update() may not cause a redraw

---
 src/GraphicsItemRenderer.cpp | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/GraphicsItemRenderer.cpp b/src/GraphicsItemRenderer.cpp
index a4b521bd..696a88ff 100644
--- a/src/GraphicsItemRenderer.cpp
+++ b/src/GraphicsItemRenderer.cpp
@@ -17,6 +17,7 @@
 ******************************************************************************/
 
 #include <QtAV/GraphicsItemRenderer.h>
+#include <QGraphicsScene>
 #include <QtGui/QPainter>
 
 namespace QtAV {
@@ -33,7 +34,8 @@ GraphicsItemRenderer::~GraphicsItemRenderer()
 int GraphicsItemRenderer::write(const QByteArray &data)
 {
     int s = ImageRenderer::write(data);
-    update();
+    scene()->update(sceneBoundingRect());
+    //update(); //does not cause an immediate paint. my not redraw.
     return s;
 }