Benjamin Root answers my query concerning user-generated events : > To answer your question, take a look at how pick_event() is declared > in backend_bases.py: > > def pick_event(self, mouseevent, artist, **kwargs): > ... > self.callbacks.process(s, event) > > The function that "fires" the event is "self.callbacks.process(s, > event)", where "self" is the figure canvas. Dear Ben, thank you, but this is not exactly my problem. I don't want to call the callback myself, since the event should be "fired" from within a callback. I should have been more precise. Let's distil the problem. [This is a part of my current teaching...] I did already what you suggest here...
Imagine an animation, which consists in generating a trajectory, segment after segment (say, of a planet). Classically this is a loop, but when it runs, the rest of the program is blocked. So, instead, the code behaves as a Python generator, generates just one segment, and that's all. But it "yields" something, it posts an event, put it in a queue, and somebody else, the mainloop() or similar, pops it off the queue and re-launches the callback. (With generators, it calls the .next()). No timers, as in Timer or Funct animations... It must be "decentralized", no recursive calls. My callback from time to time creates another planet, or destroys an existent, and there are simultaneous trajectories on the screen, several concurrent events in the queue. And the system should remain reactive, interpret buttons, sliders, etc. I know how to do this by hand, how to write my own event loop, declare a queue, and how to add to my private "virtual" event handling also the callbacks of mouse events. But this is an overkill, I repeat the functionalities which are already there, the event queue in particular. I did it with wx. But Matplotlib protects the user from the concrete back-end, and I want to protect my students as well, so I look for a "GUI-neutral" solution. Thanks. Jerzy ------------------------------------------------------------------------------ Try before you buy = See our experts in action! The most comprehensive online learning library for Microsoft developers is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3, Metro Style Apps, more. Free future releases when you subscribe now! http://p.sf.net/sfu/learndevnow-dev2 _______________________________________________ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
