Hi,
I’ve been thinking about this a bit more and I think the issue may relate
specifically to the following lines:
dialog = processing.createAlgorithmDialog("script:atobroute",{})
dialog.show()
I think the issue is that the dialog.show() opens the script dialog but that
dialog then has interactive options where you can select a point from the map
canvas. It is when you try to select the coordinates that QGIS crashes.
I think I tried using .exec_ instead of .show but of course the dialog opens
and closes straight away. I think the issue may be that my plugin is waiting
for the user to dismiss the dialog but is unhappy when it is hidden by the
select from canvas tool.
I’ve slept since I wrote the script but I think the select from map is default
functionality and the fields are defined as
self.addParameter(QgsProcessingParameterPoint(self.ORIG, 'Origin
coordinates',None,True))
Is there a better way to open a script from a button on the toolbar. Ideally I
want to simply replicate the behaviour of just double clicking the script from
the processing toolbox.
Thanks,
Paul
From: Paul Wittle
Sent: 21 April 2021 09:16
To: [email protected]
Subject: RE: [QGIS-Developer] Odd error
Hi,
Yes I used plugin builder as a base for the plugin. Here is the code in
question:
#Create the routing toolbar
self.routebar = self.iface.addToolBar("Routing Tools")
self.routebar.setObjectName(u'Routing Tools')
text = QLabel(
QCoreApplication.translate('CouncilPlugin', 'Routing Tools:')
)
#No action to connect to this!
self.routebar.addWidget(text)
route1 = QAction(
QIcon(':/plugins/council_plugin/AtoB.png'),
QCoreApplication.translate('CouncilPlugin', 'Route from A to B'),
self.iface.mainWindow()
)
route1.triggered.connect(self.AtoB)
self.routebar.addAction(route1)
#Routing Tools
def AtoB(self):
self.CheckRoutingTools() #Always check the scripts are up to date first
dialog = processing.createAlgorithmDialog("script:atobroute",{})
dialog.show()
I don’t think it gives an error message. QGIS just disappears and you have to
re-open it.
Thanks,
Paul
From: [email protected]<mailto:[email protected]>
<[email protected]<mailto:[email protected]>>
Sent: 21 April 2021 09:11
To: Paul Wittle
<[email protected]<mailto:[email protected]>>
Subject: Re: [QGIS-Developer] Odd error
Hei!
Have you bilt the plugin using "plugin builder?
Could you send the error message?
Cheers,
Robert
On Wed, Apr 21, 2021 at 10:00 AM, Paul Wittle
<[email protected]<mailto:[email protected]>>
wrote:
Hi,
I have a python script that I wrote which routes from point A to B using the
default tools in QGIS. If I go to the processing toolbox and open the dialog it
runs fine and everything is great.
I also have a python plugin and I put a button in a toolbar to open the same
script. It loads the dialog but when you try to run it the whole thing crashes
out and QGIS disables my plugin.
Does anyone have any suggestions as to what I might have done wrong?
I’m assuming the issue is related to how I’m calling the script from my plugin
rather than the script itself as it runs independently from the processing
toolbox fine 😊
Any suggestions would be appreciated.
Paul Wittle
[cid:[email protected]]<https://www.dorsetcouncil.gov.uk/>
Business Solutions Analyst (GIS)
ICT Operations
Dorset Council
01305 228473
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