[mythtv] Adding A Clock To The Watch Recordings Screen

[Kevin Kuphal]

ben levitt wrote:

>I'm trying to add a clock UIType so that Myth themes can include a
>clock in themed dialogs.
>
>I'm doing this because I want a clock on the watch recordings screen,
>so I'll know if I should watch another MythBusters, or go to sleep. 
>:]
>
>I created a subclass of UITextType called UITimeType.  It runs a timer
>that is correctly calling back to the UITimeType's animate method
>every second.  This method is correctly updating the text of the
>UITimeType, and calling refresh();
>
>The remaining problem is that the clock only updates on the screen
>when I manually cause an overlapping UIType to refresh, for example,
>by scrolling up/down in the recording list.
>
>How can I force the UITimeType to update itself on the screen every
>time its timer calls its animate() method?
>
>Do I need to get ahold of the MythDialog and tell it to refresh the
>bounds of my UITimeType, as the UIAnimatedImageType seems to do?  If
>so, how the heck is UIAnimatedImageType's m_window getting set?
>  
>
Typically things are redrawn on the screen during an updateRect call.  
You might want to look at the timer code in playbackbox that updates the 
preview video.  It runs on a timer and paints that part of the screen.  
Typically the code calls the theme subsystem to get the Rect for a 
particular UI element, then updates that as appropriate.  Your Rect 
could get updated in a timer that fires every second and then repaints 
that part of the screen only.

Kevin

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