Is there a way to cancel waveform image rendering process? about dswaveformimage HOT 2 CLOSED

Hmm very good question. As it stands, I don't see a straightforward way to achieve this unfortunately.

The analysis - which is the expensive part - is currently not implemented as an NSOperation. That would be the ideal approach to make these cancellable I'd say spontaneously. This would require a non-trivial (although relatively straightforward) amount of refactoring. To work properly it would also require to be implemented as part of the library itself, so just wrapping NSOperation outside the lib as it is right now wouldn't help.

I'll add this on my to do list, but don't think this will be done anytime soon I'm afraid.

Coincidentally, there is a fork out there that I've noticed a while ago: https://github.com/iruirc/DSWaveformImage which - among quite a few other unrelated things - implements an NSOperation approach. So one alternative approach for you might be to create your own fork and do something similar.

Sorry I don't have a better answer than this right now :/

(I'd of course be more than happy to merge changes in that direction if you'd end up forking and implementing these).

from dswaveformimage.

Thank you for your answer! :)

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