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Re: Strange eeschema behavior at zoom 0.7


On 3/30/2011 2:11 PM, jean-pierre charras wrote:
> Le 30/03/2011 16:31, Wayne Stambaugh a écrit :
>> On 3/30/2011 8:41 AM, jp.charras wrote:
>>> Wayne,
>>> can you have a look to Eeschema ?
>>> At zoom level 0.7 (and just for this value!) :
>>> - screen is incorrectly redrawn when scrolling.
>>> - There is an offset between position of mouse cursor and graphic cursor (try
>>> the smallest grid size).
>>> This is also true for libedit
>>> When loading from lib "device" the component "C", zoom is set to 0.6, and
>>> defaults are easy to see.
>>> But at Zoom 0.5 or 1, no problem.
>>> Seems Window specific (I did not see any problem under Linux Ubuntu 10.1).
>>> Tested with wxMSW 2.8.11 and 2.8.12
>>> But with wxWidgets 2.9.1, no problem.
>>> Unfortunately wxWidgets 2.9.1 creates other issues.
>> I'll take a look at it when I get a chance.  I've seen this behavior but I'm
>> not sure what to do about it.  I'm reasonably sure it has something to do with
>> blit scaling behavior on windows.  The problem seems to occur whenever the
>> scaling factor is factional like the zoom levels you mentioned.  For some
>> reason wxMSW doesn't handle this properly.  I don't know if the problem lies
>> with wxWidgets or Windows.
>> Wayne
> Wayne,
> Do not spend your time about this.
> This is certainly a bug in wxMSW, fixed in 2.9.1.
> My concerns was just a bug inside Kicad.
> I'll commit a workaround ASAP.


Thanks.  I was just looking at the problem and realized that it could also be a
scrolling issue.  Maybe you should post a bug report against wxWidgets 2.8.12
so that it can be fixed in the next release of the 2.8 branch.   I haven't
heard anything about version 3 of wxWidgets being released any time soon.