Well. Now for some reason my select by expression tool is not selecting any
features, so need to figure out why that is happening before implementing this
change. I did not make any changes that I can see that would have caused this.
From: Jacky Volpes <jacky.vol...@oslandia.com>
Sent: Monday, August 5, 2024 5:14 AM
To: Catania, Luke A ERDC-RDE-GRL-VA CIV <luke.a.cata...@erdc.dren.mil>;
'qgis-developer' <qgis-developer@lists.osgeo.org>
Subject: Re: [QGIS-Developer] Rotating selected features programmatically
Hi Luke,
My guess is that when more than one feature is selected, and the rotation is
ended, geometryChanged signal is emitted for each rotated feature.
element_layer_rotated() is run when the first geometryChanged signal is
emitted, and is disconnected, and the layer is saved, and the other
geometryChanged signals don't trigger anything.
NB: self.vector_layer.editBuffer().geometryChanged.disconnect() is risky,
if other slots are connected, prefer
self.vector_layer.editBuffer().geometryChanged.disconnect(self.element_layer_rotated)
Regards,
--
Jacky Volpes
Ingénieur développeur SIG - Oslandia
Le 01/08/2024 à 20:29, Catania, Luke A ERDC-RDE-GRL-VA CIV a écrit :
def rotateFeature(self):
"""Find the rotate feature action in QGIS toolbar and trigger it so the
user can rotate the element.
"""
# We want to detect when the rotation is complete with a
geometryChanged signal so we can commit the changes and
# end the edit session.
self.vector_layer.editBuffer().geometryChanged.connect(self.element_layer_rotated)
# Get all actions so we can search for the mActionRotateFeature action.
actions = iface.mainWindow().findChildren(QAction)
action = [x for x in actions if
x.objectName()=='mActionRotateFeature'][0]
expression = '"Element_Nb" = '
expression = expression + "\'" + f'{self.element_number}' + "\'"
QgsMessageLog.logMessage(f"expression: {expression}", "StandoffLayers",
Qgis.Info)
processing.run("qgis:selectbyexpression",
{'INPUT':self.vector_layer,
'EXPRESSION': expression,
'METHOD':0
}
)
# Inititates rotate feature action allowing to select a snap to value.
action.trigger()
QgsMessageLog.logMessage(f"Rotate Feature Action Triggered",
"ElementPlacementTool", Qgis.Info)
def element_layer_rotated(self):
"""When the rotate action is triggered it seems to ignore the
ElementPlacementTool events, so in order to end the edit session
we need to detect a geometryChanged event after the rotation is
complete.
"""
QgsMessageLog.logMessage(f"Element Layer Rotated:
{self.vector_layer.name()}", "ElementPlacementTool", Qgis.Info)
# Disconnect from the signal so we can just commit the changes.
self.vector_layer.editBuffer().geometryChanged.disconnect()
# Save changes and end edit mode
self.vector_layer.commitChanges()
self.vector_layer.endEditCommand()
self.deactivate()
From: Jacky Volpes <jacky.vol...@oslandia.com><mailto:jacky.vol...@oslandia.com>
Sent: Thursday, August 1, 2024 8:26 AM
To: Catania, Luke A ERDC-RDE-GRL-VA CIV
<luke.a.cata...@erdc.dren.mil><mailto:luke.a.cata...@erdc.dren.mil>;
'qgis-developer'
<qgis-developer@lists.osgeo.org><mailto:qgis-developer@lists.osgeo.org>
Subject: Re: [QGIS-Developer] Rotating selected features programmatically
Hi Luke,
Please provide a PyQGIS code snippet to reproduce. It will be more convenient
to comment and suggest modifications.
Thanks,
--
Jacky Volpes
Ingénieur développeur SIG - Oslandia
Le 26/07/2024 à 22:06, Catania, Luke A ERDC-RDE-GRL-VA CIV via QGIS-Developer a
écrit :
I am using the select by expression tool through python to select my features
and then I trigger rotation through python I see both selected features
rotating, but when I click to end the rotation, it only rotated one of the
features and left the other one as is. If I do this through the QGIS using the
selection by expression in the selection toolbar and the rotate in the advanced
digitizing tool bar rotating both features works fine.
Any Ideas?
Luke
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