Hi Wayne,

is Windows using WX_OVERLAY?
I didn’t think so… but I never looked for that.

The extra redraw events are only generated in case of WX_OVERLAY, which I 
thought is only used for OSX.
The only part of the changes that are not inside some WX_OVERLAY #ifdef's are 
the changes from XOR-mode to DEFAULT mode in drawing some things (rev. 5203 in 
my branch).
This, however, should have no side-effect otherwise I guess it wouldn’t have 
worked before?

Your screenshot very much looks like the one Nick mentioned recently:
  https://launchpadlibrarian.net/187456875/kicadBug.png

Are you sure that you see these artifacts only with my changes?


Regards,
Bernhard

On 16.11.2014, at 15:08, Wayne Stambaugh <[email protected]> wrote:

> Hey Bernhard,
> 
> I just finished building and testing your changes.  Something has
> definitely changed in the rendering.  I get a lot of redraw artifacts
> (see screen shots) with your changes that I do not get with the current
> product branch.  It's possible that some extra refresh events are
> occurring that are causing the problem.  I still have to test this on
> Linux as well but I am reluctant to merge your changes until we can
> resolve the windows rendering issue.
> 
> Wayne
> 
> On 11/16/2014 7:43 AM, Bernhard Stegmaier wrote:
>> Hi Wayne,
>> 
>> yes, it was behind that changes.
>> Updated to 5288.
>> 
>> 
>> Thanks,
>> Bernhard
>> 
>>> On 16.11.2014, at 02:10, Wayne Stambaugh <[email protected]> wrote:
>>> 
>>> On 11/15/2014 11:13 AM, Bernhard Stegmaier wrote:
>>>> Hi all,
>>>> 
>>>> eeschema still has some not so bad but nevertheless annoying redraw bugs 
>>>> on OS X (using WX_OVERLAY), e.g., doing a rotate during a move.
>>>> 
>>>> In the branch
>>>> lp:~stegmaier/kicad/kicad-eeredraw
>>>> https://code.launchpad.net/~stegmaier/kicad/kicad-eeredraw
>>>> I reworked current WX_OVERLAY handling to fix this (this branch does not 
>>>> contain any other changes).
>>>> 
>>>> The general idea of the rework is that the drawing code wants to draw some 
>>>> item if the drawing mode is DEFAULT. If the drawing code wants to remove 
>>>> an item it uses XOR mode. This is nothing new, it is done that way at many 
>>>> places but not consistently in all spots.
>>>> For WX_OVERLAY if some item is to be removed a complete redraw is 
>>>> triggered (this might not be the most smart approach, but the easiest one 
>>>> and I did not see any real big performance impact).
>>>> 
>>>> Rework consists of 3 parts:
>>>> (1) Remove different WX_OVERLAY specific fixes/workaround being not 
>>>> consistently used (rev. 5202).
>>>> (2) Only when WX_OVERLAY is being used: push down the remove/repaint check 
>>>> to all draw methods (rev. 5201).
>>>> (3) Change drawing mode consistently to use DEFAULT for drawing and XOR 
>>>> for removing an item (rev. 5203).
>>>> 
>>>> I have tested the changes quite some while on OS X and did not notice any 
>>>> redraw artifacts any longer.
>>>> 
>>>> Since part (3) also affects other platforms, changes have to be tested not 
>>>> only on OS X. 
>>>> However, there should be no change in behavior on platform not using 
>>>> WX_OVERLAY (in theory).
>>>> 
>>>> It would be great if this could get merged to main branch.
>>>> 
>>>> 
>>>> Regards,
>>>> Bernhard
>>>> 
>>> 
>>> Bernhard,
>>> 
>>> Please sync this branch with the latest product branch so I can build
>>> and test it on windows.  I'm getting the Boost 1.57 avhttp build error
>>> so you must be a few revision behind.
>>> 
>>> Thanks,
>>> 
>>> Wayne
>>> 
>>> 
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>> 
>> 
> 
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