FigureCanvasMac.flush_events() raises NotImplementedError

[ddale]

Original report at SourceForge, opened Thu Mar 10 10:39:14 2011

FigureCanvasMac seems like it should be a "backend with GUI", but it doesn't implement flush_events(). Seems like it should pass, if nothing else.

SourceForge History

• On Fri Mar 25 18:54:33 2011, by pivanov314: assigned_to: 100

[dmcdougall]

I'm not sure there's a Cocoa API for this:

http://www.cocoabuilder.com/archive/cocoa/149352-flushing-events.html
http://cocoadev.com/wiki/FlushAppEventQueue

It appears that event polling was phased out after OS 9. Perhaps a pass is the best option here.

[mdehoon]

Actually why is a flush_events method needed? It is not used in the matplotlib source code. Perhaps it is better to remove flush_events altogether?

[efiring]

@mdehoon, flush_events dates back to February, 2008 as part of the official API for gui backends, so even though we don't use it internally or in examples, we can't just rip it out. It appears to be carefully implemented in the other gui backends, and at least for them it seems to be a reasonable method to have available. Therefore I think that adding it to the macosx backend as a no-op (if indeed there is not equivalent functionality available) would be the simplest way to solve the problem and close this issue.

[mdehoon]

OK, I'll add it then. This can be done on MacOSX using NSView displayIfNeeded.
If somebody could please accept pull request #2233 , then I'll create a new pull request for flush_events.

[efiring]

On 2013/07/22 1:49 PM, mdehoon wrote:

If somebody could please accept pull request #2233
#2233 , then I'll
create a new pull request for flush_events.

Done.

[mdehoon]

@efiring Thanks. Pull request #2245 adds a flush_events method to the MacOSX backend.

[dmcdougall]

Resolved by #2245.