Hi Pablo,

We would like a self-contained test case, that we can compile.  It does not need to be your exact code, just something 
that represents it.
It is quite possible that "tearing" will occur, with an unaccelerated driver, but we would be surprised if there was 
flickering.
If you can send us the test case that we can compile and run, we will give the best solution we can think of.

Regards,
Derek

-----Original Message-----
From: Pablo Cepedal [mailto:community-noreply@qnx.com] 
Sent: November-12-12 12:15 PM
To: photon-graphics
Subject: Re: RE: RE: RE: RE: Widget flicks if not rectangular

Hi. I've tried reparenting the labels into PtOSContainer but I can still see the screen/image sweeping.


The app is something like this:

1) A window created in PhAB that contains:
	- PtOSContainer
		- PtRaw (PtOSContainer's child)
		- PtLabel (PtOSContainer's child)
		
2) A timer_cb that ticks every 200 ms. This cb does the following:
	2.1) Updates the app state (data input).
	2.2) Render function (that makes conversions from data input (GPS) and screen)
		This function makes some calculations and uses the Photon primitives:
		
		First:
		// Fills a rectangle the same size of the screen with a certain color
		PgSetFillColor();
		PgDrawRect(r, Pg_DRAW_FILL);
		
		Then:
		// Draws the polygons and lines needed.
		PgDrawPolygon()
		PgSetStrokeColor()
		PgDrawLine()
		...
		
	2.3) Damages the PtRaw widget.
	
3) The draw_function that runs with every PtDamageWidget() does this:
	3.1) Sets the label's text with: PtSetResource(ABW_speed_label, Pt_ARG_TEXT_STRING, speed, strlen(speed));
	3.2) PgDrawPhImage(&pos, VidImg1, NULL)... where:
		- &pos is a PhPoint_t {0,0}
		- VidImg1 is the image that was formerly modified with every 200 ms loop in PmMemoryContext_t and flushed into the 
PtRaw widget.
		

The idea of this is to show some GPS map (along with some other data, generated in item 2.2) and to put some controls 
and labels on top of that graphic.
Please let me know if this is enough or if you need some more details/code.

Thanks for your time.



_______________________________________________

Photon microGUI
http://community.qnx.com/sf/go/post97108
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