T38G interface does not redraw correctly

[cptjack]

The interface of the T38G does not redraw correctly after a YealinkIPPhoneImageScreen in fullscreen mode. The background and line labels don't get refreshed properly. This issue occurs when you go from a fullscreen YealinkIPPhoneImageScreen XML to an XML that does not occupy the whole screen.

For example:

• Fullscreen.xml -> Regular.xml
• Fullscreen.xml -> Text.xml
  

Will produce these results:
       

It can be easily reproduced using these 3 XML files that point to eachother. Everything works fine, unless the fullscreen image is shown and you press another softkey.

text.xml

Code:

<YealinkIPPhoneTextScreen Beep="no" Timeout="120" LockIn="no">
<Title>Test Title</Title><Text>Test Text</Text>
<SoftKey index = "1"><Label>Regular</Label><URI>http://10.1.0.30/voip/yealink/regular.xml</URI></SoftKey>
<SoftKey index = "2"><Label>Fullscreen</Label><URI>http://10.1.0.30/voip/yealink/fullscreen.xml</URI></SoftKey>
<SoftKey index = "3"><Label>Text</Label><URI>http://10.1.0.30/voip/yealink/text.xml</URI></SoftKey>
<SoftKey index = "4"><Label>Exit</Label><URI>Key:CANCEL</URI></SoftKey>
</YealinkIPPhoneTextScreen>

regular.xml

Code:

<YealinkIPPhoneImageScreen doneAction="" Beep="no" Timeout="120" LockIn="no" mode="regular">
<Image horizontalAlign="right" verticalAlign="top">http://10.1.0.30/voip/test.jpg</Image>
<SoftKey index = "1"><Label>Regular</Label><URI>http://10.1.0.30/voip/yealink/regular.xml</URI></SoftKey>
<SoftKey index = "2"><Label>Fullscreen</Label><URI>http://10.1.0.30/voip/yealink/fullscreen.xml</URI></SoftKey>
<SoftKey index = "3"><Label>Text</Label><URI>http://10.1.0.30/voip/yealink/text.xml</URI></SoftKey>
<SoftKey index = "4"><Label>Exit</Label><URI>Key:CANCEL</URI></SoftKey>
</YealinkIPPhoneImageScreen>

fullscreen.xml

Code:

<YealinkIPPhoneImageScreen doneAction="" Beep="no" Timeout="120" LockIn="no" mode="fullscreen">
<Image horizontalAlign="right" verticalAlign="top">http://10.1.0.30/voip/test.jpg</Image>
<SoftKey index = "1"><Label>Regular</Label><URI>http://10.1.0.30/voip/yealink/regular.xml</URI></SoftKey>
<SoftKey index = "2"><Label>Fullscreen</Label><URI>http://10.1.0.30/voip/yealink/fullscreen.xml</URI></SoftKey>
<SoftKey index = "3"><Label>Text</Label><URI>http://10.1.0.30/voip/yealink/text.xml</URI></SoftKey>
<SoftKey index = "4"><Label>Exit</Label><URI>Key:CANCEL</URI></SoftKey>
</YealinkIPPhoneImageScreen>

This is the way it should look: