mirror of
https://github.com/qgis/QGIS.git
synced 2025-02-27 00:33:48 -05:00
drop old processing provider example which is not compatible QGIS 3
This commit is contained in:
Etienne Trimaille
Nyall Dawson
parent
7aa7248b97
commit
fa843f8705
@ -6,6 +6,5 @@ ADD_SUBDIRECTORY(grass7)
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ADD_SUBDIRECTORY(otb)
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ADD_SUBDIRECTORY(otb)
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ADD_SUBDIRECTORY(saga)
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ADD_SUBDIRECTORY(saga)
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ADD_SUBDIRECTORY(qgis)
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ADD_SUBDIRECTORY(qgis)
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ADD_SUBDIRECTORY(exampleprovider)
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PLUGIN_INSTALL(processing algs ${PY_FILES})
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PLUGIN_INSTALL(processing algs ${PY_FILES})
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@ -1,4 +0,0 @@
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FILE(GLOB PY_FILES *.py)
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FILE(GLOB OTHER_FILES *.txt)
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PLUGIN_INSTALL(processing ./algs/exampleprovider ${PY_FILES} ${OTHER_FILES})
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@ -1,125 +0,0 @@
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# -*- coding: utf-8 -*-
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"""
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***************************************************************************
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__init__.py
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---------------------
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Date : July 2013
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Copyright : (C) 2013 by Victor Olaya
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Email : volayaf at gmail dot com
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***************************************************************************
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; either version 2 of the License, or *
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* (at your option) any later version. *
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* *
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***************************************************************************
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"""
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__author__ = 'Victor Olaya'
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__date__ = 'July 2013'
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__copyright__ = '(C) 2013, Victor Olaya'
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# This will get replaced with a git SHA1 when you do a git archive
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__revision__ = '$Format:%H$'
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from qgis.core import QgsVectorFileWriter, QgsSettings, QgsProcessingUtils
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from processing.core.GeoAlgorithm import GeoAlgorithm
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from processing.core.parameters import ParameterVector
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from processing.core.outputs import OutputVector
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from processing.tools import dataobjects
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class ExampleAlgorithm(GeoAlgorithm):
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"""This is an example algorithm that takes a vector layer and
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creates a new one just with just those features of the input
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layer that are selected.
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It is meant to be used as an example of how to create your own
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algorithms and explain methods and variables used to do it. An
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algorithm like this will be available in all elements, and there
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is not need for additional work.
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All Processing algorithms should extend the GeoAlgorithm class.
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"""
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# Constants used to refer to parameters and outputs. They will be
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# used when calling the algorithm from another algorithm, or when
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# calling from the QGIS console.
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OUTPUT_LAYER = 'OUTPUT_LAYER'
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INPUT_LAYER = 'INPUT_LAYER'
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def __init__(self):
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super().__init__()
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"""Here we define the inputs and output of the algorithm, along
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with some other properties.
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"""
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# We add the input vector layer. It can have any kind of geometry
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# It is a mandatory (not optional) one, hence the False argument
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self.addParameter(ParameterVector(self.INPUT_LAYER,
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self.tr('Input layer'), [dataobjects.TYPE_VECTOR_ANY], False))
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# We add a vector layer as output
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self.addOutput(OutputVector(self.OUTPUT_LAYER,
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self.tr('Output layer with selected features')))
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def name(self):
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# Unique (non-user visible) name of algorithm
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return 'create_copy_of_layer'
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def displayName(self):
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# The name that the user will see in the toolbox
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return self.tr('Create copy of layer')
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def group(self):
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return self.tr('Algorithms for vector layers')
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def processAlgorithm(self, parameters, context, feedback):
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"""Here is where the processing itself takes place.
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:param parameters:
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:param context:
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"""
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# The first thing to do is retrieve the values of the parameters
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# entered by the user
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inputFilename = self.getParameterValue(self.INPUT_LAYER)
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output = self.getOutputValue(self.OUTPUT_LAYER)
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# Input layers vales are always a string with its location.
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# That string can be converted into a QGIS layer (a
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# QgsVectorLayer in this case) using the
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# QgsProcessingUtils.mapLayerFromString() method.
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vectorLayer = QgsProcessingUtils.mapLayerFromString(inputFilename, context)
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# And now we can process
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# First we create the output layer. The output value entered by
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# the user is a string containing a filename, so we can use it
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# directly
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settings = QgsSettings()
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systemEncoding = settings.value('/UI/encoding', 'System')
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writer = QgsVectorFileWriter(output,
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systemEncoding,
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vectorLayer.fields(),
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vectorLayer.wkbType(),
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vectorLayer.crs())
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# Now we take the features from input layer and add them to the
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# output. Method features() returns an iterator, considering the
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# selection that might exist in layer and the configuration that
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# indicates should algorithm use only selected features or all
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# of them
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features = QgsProcessingUtils.getFeatures(vectorLayer, context)
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for f in features:
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writer.addFeature(f)
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# There is nothing more to do here. We do not have to open the
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# layer that we have created. The framework will take care of
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# that, or will handle it if this algorithm is executed within
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# a complex model
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@ -1,103 +0,0 @@
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# -*- coding: utf-8 -*-
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"""
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***************************************************************************
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__init__.py
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---------------------
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Date : July 2013
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Copyright : (C) 2013 by Victor Olaya
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Email : volayaf at gmail dot com
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***************************************************************************
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; either version 2 of the License, or *
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* (at your option) any later version. *
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* *
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***************************************************************************
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"""
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__author__ = 'Victor Olaya'
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__date__ = 'July 2013'
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__copyright__ = '(C) 2013, Victor Olaya'
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# This will get replaced with a git SHA1 when you do a git archive
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__revision__ = '$Format:%H$'
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from qgis.core import QgsProcessingProvider
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from processing.core.ProcessingConfig import Setting, ProcessingConfig
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from exampleprovider.ExampleAlgorithm import ExampleAlgorithm
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class ExampleAlgorithmProvider(QgsProcessingProvider):
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MY_DUMMY_SETTING = 'MY_DUMMY_SETTING'
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def __init__(self):
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super().__init__()
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def load(self):
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"""In this method we add settings needed to configure our
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provider.
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"""
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ProcessingConfig.settingIcons[self.name()] = self.icon()
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# Deactivate provider by default
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ProcessingConfig.addSetting(Setting(self.name(), 'ACTIVATE_EXAMPLE',
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'Activate', False))
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ProcessingConfig.addSetting(Setting('Example algorithms',
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ExampleAlgorithmProvider.MY_DUMMY_SETTING,
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'Example setting', 'Default value'))
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ProcessingConfig.readSettings()
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self.refreshAlgorithms()
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return True
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def unload(self):
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"""Setting should be removed here, so they do not appear anymore
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when the plugin is unloaded.
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"""
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ProcessingConfig.removeSetting('ACTIVATE_EXAMPLE')
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ProcessingConfig.removeSetting(
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ExampleAlgorithmProvider.MY_DUMMY_SETTING)
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def isActive(self):
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"""Return True if the provider is activated and ready to run algorithms"""
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return ProcessingConfig.getSetting('ACTIVATE_EXAMPLE')
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def setActive(self, active):
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ProcessingConfig.setSettingValue('ACTIVATE_EXAMPLE', active)
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def id(self):
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"""This is the name that will appear on the toolbox group.
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It is also used to create the command line name of all the
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algorithms from this provider.
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"""
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return 'example'
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def name(self):
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"""This is the localised full name.
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"""
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return 'Example algorithms'
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def icon(self):
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"""We return the default icon.
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"""
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return QgsProcessingProvider.icon(self)
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def loadAlgorithms(self):
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"""Here we fill the list of algorithms in self.algs.
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This method is called whenever the list of algorithms should
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be updated. If the list of algorithms can change (for instance,
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if it contains algorithms from user-defined scripts and a new
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script might have been added), you should create the list again
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here.
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In this case, since the list is always the same, we assign from
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the pre-made list. This assignment has to be done in this method
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even if the list does not change, since the self.algs list is
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cleared before calling this method.
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"""
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for alg in [ExampleAlgorithm()]:
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self.addAlgorithm(alg)
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@ -1,51 +0,0 @@
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# -*- coding: utf-8 -*-
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"""
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***************************************************************************
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__init__.py
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---------------------
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Date : July 2013
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Copyright : (C) 2013 by Victor Olaya
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Email : volayaf at gmail dot com
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***************************************************************************
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; either version 2 of the License, or *
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* (at your option) any later version. *
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* *
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***************************************************************************
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"""
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__author__ = 'Victor Olaya'
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__date__ = 'July 2013'
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__copyright__ = '(C) 2013, Victor Olaya'
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# This will get replaced with a git SHA1 when you do a git archive
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__revision__ = '$Format:%H$'
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import os
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import sys
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import inspect
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from qgis.core import QgsApplication
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from processing.core.Processing import Processing
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from exampleprovider.ExampleAlgorithmProvider import ExampleAlgorithmProvider
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cmd_folder = os.path.split(inspect.getfile(inspect.currentframe()))[0]
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if cmd_folder not in sys.path:
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sys.path.insert(0, cmd_folder)
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class ProcessingExampleProviderPlugin:
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def __init__(self):
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self.provider = ExampleAlgorithmProvider()
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def initGui(self):
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QgsApplication.processingRegistry().addProvider(self.provider)
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def unload(self):
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QgsApplication.processingRegistry().removeProvider(self.provider)
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@ -1,32 +0,0 @@
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# -*- coding: utf-8 -*-
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"""
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***************************************************************************
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__init__.py
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---------------------
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Date : July 2013
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Copyright : (C) 2013 by Victor Olaya
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Email : volayaf at gmail dot com
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***************************************************************************
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; either version 2 of the License, or *
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* (at your option) any later version. *
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* *
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***************************************************************************
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"""
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__author__ = 'Victor Olaya'
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__date__ = 'July 2013'
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__copyright__ = '(C) 2013, Victor Olaya'
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# This will get replaced with a git SHA1 when you do a git archive
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__revision__ = '$Format:%H$'
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from exampleprovider.ProcessingExampleProviderPlugin import ProcessingExampleProviderPlugin
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def classFactory(iface):
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return ProcessingExampleProviderPlugin()
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@ -1,18 +0,0 @@
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[general]
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name=Processing Example Provider
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description=An example plugin that adds algorithms to Processing. Mainly created to guide developers in the process of creating plugins that add new capabilities to Processing
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category=Analysis
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version=2.0
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qgisMinimumVersion=2.0
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author=Victor Olaya
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email=volayaf@gmail.com
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tags=analysis,processing
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homepage=
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tracker=
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repository=
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experimental=False
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deprecated=False
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Reference in New Issue
Block a user