[GRASS-dev] Re: wxGUI: MapDisplay mouse events

[Michael Barton]

Vasek,

What are the *.bin files that download from your html links?

Michael
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C. Michael Barton 
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Professor of Anthropology, School of Human Evolution & Social Change
Arizona State University
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On Aug 18, 2011, at 9:00 AM, grass-dev-request at lists.osgeo.org wrote:

> Date: Tue, 16 Aug 2011 19:44:11 +0200
> From: Wenzeslaus <wenzeslaus at gmail.com>
> Subject: [GRASS-dev] Re: wxGUI: MapDisplay mouse events
> To: grass-dev at lists.osgeo.org
> Message-ID:
> 	<CABo5uVvujWSzK4CQrKefUxZ7H7bziSs1orYVC6tXiQ_1STFErg at mail.gmail.com>
> Content-Type: text/plain; charset="utf-8"
> 
> Hi list,
> 
> I have suggestion about processing mouse events from MapDisplay
> (BufferedWindow, GLWindow). In mapdisplay_mouse_events.diff is
> implementation of API which should be enough generic to be used by
> more than one module.
> 
> You can bind your own handler to MapDisplay (MapWindow to be precise)
> MouseEvents by public API. It is no longer necessary to edit code in
> *mapdisp*.py files. (It is the main advantage.)
> 
> I have attached test code (mapdisplay_mouse_events_example.diff). It
> gets coordinates from MapDisplay. I think it is
> something like Margarita needs in her rstream module. Example is also
> included in doc string.
> 
> Suggested code works with both 2D (BufferedWindow) and 3D (GLWindow)
> and with multiple MapDisplays.  It is also possible to override
> current cursor.
> 
> It doesn't work with Digitizer (VDigitWindow) (no errors but functions
> report unsuccessful binds).
> 
> The handler can be also unbound with this API. However all other
> handlers will be unbounded (and only MapWindow handlers will be
> bounded again). Unbind only one handler is not possible in wxPython.
> 
> I'm not sure how to handle standard behaviour of mouse events in
> MapWindow and its subclasses. Now, functions connected with
> mouse['use'] are disabled by setting mouse['use'] to other value. But
> there are also other aproaches. Functions can be disabled in wxPython
> way by Unbind() or we can let functions to do what they do usualy, but
> it will be very confusing, I think.
> 
> Vasek
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