From e4cf250a28e155030c6d9dc6369517b82ddbe45c Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E7=9F=B3=E5=8D=9A=E6=96=87?= <sbw@sbw.so>
Date: Tue, 9 Jan 2018 17:09:29 +0800
Subject: [PATCH] fix app preview is empty

Change-Id: I0aa375b0bd7bd6745a7e5c3e3fb60bfa47415853
---
 frame/item/components/previewcontainer.cpp | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/frame/item/components/previewcontainer.cpp b/frame/item/components/previewcontainer.cpp
index 0cf9201c4..2d719e3b0 100644
--- a/frame/item/components/previewcontainer.cpp
+++ b/frame/item/components/previewcontainer.cpp
@@ -165,6 +165,10 @@ void PreviewContainer::appendSnapWidget(const WId wid)
     m_windowListLayout->addWidget(snap);
 
     m_snapshots.insert(wid, snap);
+
+    // refresh if visible
+    if (isVisible())
+        snap->fetchSnapshot();
 }
 
 void PreviewContainer::enterEvent(QEvent *e)