Map Widget - how does it actually work?

[Prothero-ELS]

Graham,
My demo stack was enhanced a lot by Hermann but I don’t know where it is, after a cursory search. He added a bunch of other capabilities, but I felt a quick look at the Google map docs would make it easy to add them. His expanded version may be in the examples repository. I didn’t check it.

My main problem was to calculate the bounding lat/lons of the displayed map.

Good luck with it.

William Prothero
https://earthlearningsolutions.org

> On May 29, 2020, at 11:24 PM, Graham Samuel via use-livecode <use-livecode at lists.runrev.com> wrote:
> 
> Bill, thanks for all this. I will study it today (it’s breakfast time in France as I write this).
> 
> I did some internet searching to look at the underlying Apple Map system - which is used for the LC version of the Map widget for iOS - and its API. It’s rich and complex, so the widget just scratches the surface of the available functionality, 
> 
> This saddened my a bit, but then I reflected on the enormous simplification that LC represents for a developer compared with what you’d have to learn and apply before getting anywhere at all coding a mobile app ‘outside’ LC. It really is quite alarming. I was a geek once, and learned and applied some very obscure languages within very primitive and obscure systems, but I have zero taste for that sort of thing now. As a further example, take a quick look at what Apple say to attract you to their Swift language. They want to tell you it’s easy and fun - I think one can have a contrary opinion, especially if one has never coded in Objective-C or anything like it. [That was a pro-LiveCode rant, in case you didn’t notice.]
> 
> Graham
> 
>> On 30 May 2020, at 00:44, prothero--- via use-livecode <use-livecode at lists.runrev.com> wrote:
>> 
>> Graham:
>> If that doesn’t have everything, I have a zip file at:
>> http://earthlearningsolutions.org/google-static-maps-demo/ <http://earthlearningsolutions.org/google-static-maps-demo/>
>> William A. Prothero
>> Santa Barbara, CA. 93105
>> http://earthlearningsolutions.org/
>> 
>>>> On May 29, 2020, at 3:42 PM, William Prothero via use-livecode <use-livecode at lists.runrev.com> wrote:
>>> 
>>> Graham:
>>> Here is a link to an example that I, with lots of help from Hermann created. Maybe it will be useful. All done in livecode, so it should work. Haven’t tried it since 2017, tho.
>>> Bill
>>> 
>>> https://www.dropbox.com/s/kg5l80bi82u1sap/google-maps-demo.livecode?dl=0 <https://www.dropbox.com/s/kg5l80bi82u1sap/google-maps-demo.livecode?dl=0>
>>> 
>>> William A. Prothero
>>> https://earthlearningsolutions.org
>>> 
>>>> On May 25, 2020, at 1:57 PM, Graham Samuel via use-livecode <use-livecode at lists.runrev.com> wrote:
>>>> 
>>>> Back to my problems with inadequate documentation on widgets. The Map widget is probably very powerful, but the Dictionary entry simple tells you the names of the parameters. I can’t work out anything about the format of the data you can feed in, or what it looks like when it comes out. There isn’t even enough info to start a meaningful experiment, IMHO.
>>>> 
>>>> Does anyone know of a source of helpful documentation on this? I am as ever interested in the iOS version.
>>>> 
>>>> Thanks for any info.
>>>> 
>>>> Graham
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