QNX: Prevent rendering when app is minimized

Windows will only be exposed and hence rendered when they are not
minimized. This will save useless computations and hence battery.

Change-Id: I83166cc6c3d89e878106c998a35890dd7788ed8a
Reviewed-by: Fabian Bumberger <fbumberger@rim.com>
Reviewed-by: Rafael Roquetto <rafael.roquetto@kdab.com>

1 files changed, 6 insertions, 0 deletions

diff --git a/src/plugins/platforms/qnx/qqnxscreen.cpp b/src/plugins/platforms/qnx/qqnxscreen.cpp
index 7959617443..d940b35861 100644
--- a/src/plugins/platforms/qnx/qqnxscreen.cpp
+++ b/src/plugins/platforms/qnx/qqnxscreen.cpp
@@ -646,6 +646,9 @@ void QQnxScreen::activateWindowGroup(const QByteArray &id)
     if (!window)
         return;
 
+    Q_FOREACH (QQnxWindow *childWindow, m_childWindows)
+        childWindow->setExposed(true);
+
     QWindowSystemInterface::handleWindowActivated(window);
 }
 
@@ -656,6 +659,9 @@ void QQnxScreen::deactivateWindowGroup(const QByteArray &id)
     if (!rootWindow() || id != rootWindow()->groupName())
         return;
 
+    Q_FOREACH (QQnxWindow *childWindow, m_childWindows)
+        childWindow->setExposed(false);
+
     QWindowSystemInterface::handleWindowActivated(0);
 }