[QGIS-Developer] Reading current measurement with python

[Simon Gröchenig]

Hi,

> As I don't have the context explaining why you need this

I try to "save" measurements as annotation or linestring/area layer in order to see measurements in layouts.

Currently, I copy (linear) measurements and use the coordinates from QGuiApplication.clipboard() to draw a temporary linestring. I would like to skip copying the measurements. Also, I would like to "save" area measurements where copy is not supported by the measurement gui.

Any ideas?

Simon


-----Ursprüngliche Nachricht-----
Von: Jacky Volpes <jacky.volpes at oslandia.com> 
Gesendet: Freitag, 6. Oktober 2023 15:00
An: qgis-developer at lists.osgeo.org
Cc: Simon Gröchenig <groechenig at zt-gis.at>
Betreff: Re: [QGIS-Developer] Reading current measurement with python

Hi Simon,

Ok, I understand your question now.

Unfortunately, the measurement tool is not accessible with the python API.

As I don't have the context explaining why you need this, I can propose you to find another way for your process, or, if you really need to get the measurement value, here is a code snippet that finds the text within the measurement dialog (I don't recommend you to use this in a production environment though, or you might have unexpected behaviors if something changes in the dialog implementation).


measurementDialogs = [d for d in
iface.mainWindow().findChildren(QDialog, "QgsMeasureBase") if d.isVisible()] if len(measurementDialogs) == 1:
     measurementDialog = measurementDialogs[0]
     totalTextLineEdit = measurementDialog.findChild(QLineEdit, "editTotal")
     if totalTextLineEdit is not None:
         print(totalTextLineEdit.text())


Best regards,

Jacky Volpes

Ingénieur SIG - Oslandia

--

Le 04/10/2023 à 10:15, Simon Gröchenig a écrit :
> Hi Jacky,
>
> thanks for your help and for pointing me to this code snippet.
>
> However, I see that the measurement tools are instances of QgsMapTool with an QAction (and not QgsMapToolDigitizeFeature) and therefore mapTool().pointsZM() is not available.
>
> Now I wonder if I can utilize the QgsRubberBand
>
> Best regards
> Simon
>
>
> ------------------------------
>
> Message: 2
> Date: Mon, 2 Oct 2023 08:56:58 +0200
> From: Jacky Volpes <jacky.volpes at oslandia.com>
> To: qgis-developer at lists.osgeo.org
> Subject: Re: [QGIS-Developer] Reading current measurement with python
> Message-ID: <352a9e94-9010-4f39-8738-89323a87a15a at oslandia.com>
> Content-Type: text/plain; charset="utf-8"; Format="flowed"
>
> Hi,
>
> You can have a look at this snippet:
> https://lists.osgeo.org/pipermail/qgis-developer/2023-May/065789.html
>
> Regards,
>
> --
>
> Jacky Volpes
>
> Ing?nieur SIG - Oslandia
>
> --
>
> Le 02/10/2023 ? 07:05, Simon Gr?chenig via QGIS-Developer a ?crit?:
>> Hi list,
>>
>> is it possible to get the current line/area measurement with Python?
>>
>> Simon
>>
>>
>> _______________________________________________
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