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

[Michael Barton]

Vasek,

mapdisp_window.mouse['end'] returns a tuple with the window xy coodinates of the mouse click position on a LeftUp event (releasing the mouse button). 

mapdisp_window.Pixel2Cell(self.mouse['end']) will return a tuple with the geographic xy coordinates of the mouse click position.

No need to edit mapdisp_window.py

Getting the 3D coordinates is different.

Michael
____________________
C. Michael Barton
Director, Center for Social Dynamics & Complexity 
Professor of Anthropology, School of Human Evolution & Social Change
Arizona State University

voice: 	480-965-6262 (SHESC), 480-727-9746 (CSDC)
fax:          480-965-7671 (SHESC),  480-727-0709 (CSDC)
www: http://www.public.asu.edu/~cmbarton, http://csdc.asu.edu











On Aug 18, 2011, at 12:57 AM, Wenzeslaus wrote:

> Michael,
> 
> as far as I know, now if you want to get mouse click coordinates from
> MapDisplay (MapWindow) you have to edit file mapdisp_window.py (for 2D
> mode) and nviz_mapdisp.py (if you also want coordinates from 3D).
> 
> With my suggested API there is no need to edit these 'core files'. You
> simply register your handler. And it can be done even if you are
> writing a addon and you can not change 'core files'.
> 
> I don't think that we should change existing code. Some functions
> (features) are very connected to MapWindow and very complex and
> writing code just into 'core files' is the best solution. But in my
> opinion suggested API is the best solution for simple tasks like 'get
> mouse click coordinates to MyDialog'.
> 
> Vasek
> 
> 
> On 17 August 2011 23:21, Michael Barton <Michael.Barton at asu.edu> wrote:
>> I need to look at this in more detail, but at first glance, it add another method that does things that are already done by other methods.
>> 
>> Michael
>> ______________________________
>> C. Michael Barton
>> Director, Center for Social Dynamics & Complexity
>> Professor of Anthropology, School of Human Evolution & Social Change
>> Arizona State University
>> Tempe, AZ  85287-2402
>> USA
>> 
>> voice:  480-965-6262 (SHESC), 480-727-9746 (CSDC)
>> fax:          480-965-7671(SHESC), 480-727-0709 (CSDC)
>> www:    http://csdc.asu.edu, http://shesc.asu.edu
>>                http://www.public.asu.edu/~cmbarton
>> 
>> On Aug 17, 2011, at 2:13 PM, Wenzeslaus wrote:
>> 
>>> Hi Michael,
>>> 
>>> it is file with patch
>>> mapdisplay_mouse_events.diff
>>> and simple example how to use API also in diff file
>>> mapdisplay_mouse_events_example.diff
>>> 
>>> I'm not sure why, but mailing list thinks that MIME type text/x-patch
>>> is a binary file. Then it produces the text and links you see. Some
>>> mail clients can handle it and instead of links they displays
>>> attachments but some cannot.
>>> 
>>> I don't understand it completely and I don't know how to avoid it.
>>> I'll try to attach the patch with txt suffix to find out how it works.
>>> 
>>> Vasek
>>> 
>>> 
>>> On 17 August 2011 20:06, Michael Barton <michael.barton at asu.edu> wrote:
>>>> Vasek,
>>>> 
>>>> What are the *.bin files that download from your html links?
>>>> 
>>>> Michael
>>> <mapdisplay_mouse_events.txt>
>> 
>>