On Jul 22, 2015, at 6:09 AM, Bob Gustafson <bobgus@xxxxxxx
<mailto:bobgus@xxxxxxx>> wrote:
If you do a Google search on:
XOR draw mode on OS X
There are a lot of notes and bug reports.
This one might have some useful hints:
http://stackoverflow.com/questions/8951679/drawing-with-xor-in-quartz
Hope this helps
Bob G
On 07/22/2015 12:47 AM, Bernhard Stegmaier wrote:
On 22 Jul 2015, at 05:10, Garth Corral <gcorral@xxxxxxxxx> wrote:
On Jul 21, 2015, at 1:30 PM, Wayne Stambaugh <stambaughw@xxxxxxxxx
<mailto:stambaughw@xxxxxxxxx>> wrote:
On 7/21/2015 4:19 PM, Bernhard Stegmaier wrote:
OK, got it… the crosshair is only shown in some modes (didn’t
really use
GAL up to now).
Yes, works also for me in GAL mode and not in default canvas.
I'm not sure why this doesn't work in the default canvas. Someone
should probably take a look at it. I'm guessing it has something
to do
with the overlays used on OSX.
Um, perhaps it has something to do with this:
#ifdef __WXMAC__
m_defaultCursor = m_currentCursor = wxCURSOR_CROSS;
m_showCrossHair = false;
#else
m_defaultCursor = m_currentCursor = wxCURSOR_ARROW;
m_showCrossHair = true;
#endif
I’m assuming that this was done due to overlay issues as Wayne
suggests.
You don’t have a XOR-drawing mode on OS X with wxWidgets, so the
usual redraw-to-delete doesn’t work here.
If you want to delete something you have to completely repaint the
canvas or revert the the last state saved in the overlay (which is
faster than a complete redraw but still not as fast as just drawing
two lines).
If I haven’t tried yet, but if you just remove that ifdef I guess
deletion of the crosshair won’t work at all (you would just fill up
the canvas with crosshairs). Or, it could be quite slow (there is
already now some noticeable lag when quickly moving around objects).
However, I can give it a try on the weekend...
So, the real issue is not to have a XOR draw mode on OS X, which is
quite the base of every drawing stuff in the default canvas of
pcbnew and eeschema. Using this overlay hack is just a workaround
with many problems (especially causing all those redraw issues in
eeschema)...
Regards,
Bernhard
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