[haiku-bugs] Re: [Haiku] #9457: API for Obtaining Cursor Shape Bitmap and Change Notification
- From: "jackburton" <trac@xxxxxxxxxxxx>
- Date: Thu, 14 Feb 2013 10:19:51 -0000
#9457: API for Obtaining Cursor Shape Bitmap and Change Notification
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Reporter: AGMS | Owner: axeld
Type: enhancement | Status: new
Priority: normal | Milestone: R1
Component: Servers/app_server | Version: R1/Development
Resolution: | Keywords: cursor, vnc
Blocked By: | Blocking:
Has a Patch: 0 | Platform: All
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Comment (by jackburton):
Replying to [comment:1 axeld]:
> And finally, having dirty rects would definitely be faster -- to improve
user responsiveness, you could still prioritize (or even divide) those
rectangles.
Indeed. There should be an api (in BScreen, I guess), where an application
can subscribe to these drawing events, and the app_server would send a
BMessage with a list of BRects which have been touched by drawing
operations. I think this has been proposed eons ago (also by me and Marc
Flerackers, IIRC :-) ) but we never managed to implement this.
The "hard" part would be avoid slowing down drawing in app_server while
sending the messages. Having a dedicated thread which sends the messages
would be the best option, probably.
--
Ticket URL: <http://dev.haiku-os.org/ticket/9457#comment:2>
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