本文整理汇总了Python中qgis.core.QgsSettings类的典型用法代码示例。如果您正苦于以下问题:Python QgsSettings类的具体用法?Python QgsSettings怎么用?Python QgsSettings使用的例子?那么恭喜您, 这里精选的类代码示例或许可以为您提供帮助。
在下文中一共展示了QgsSettings类的15个代码示例,这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞,您的评价将有助于系统推荐出更棒的Python代码示例。
示例1: chooseOutputFile
def chooseOutputFile(self):
# get last used dir
settings = QgsSettings()
lastUsedDir = settings.value(self.lastUsedVectorDirSettingsKey, ".")
# get selected filter
selectedFilter = self.cboFileFormat.currentData()
# ask for a filename
filename, filter = QFileDialog.getSaveFileName(self, self.tr("Choose where to save the file"), lastUsedDir,
selectedFilter)
if filename == "":
return
filterString = QgsVectorFileWriter.filterForDriver(selectedFilter)
ext = filterString[filterString.find('.'):]
ext = ext[:ext.find(' ')]
if not filename.lower().endswith(ext):
filename += ext
# store the last used dir
settings.setValue(self.lastUsedVectorDirSettingsKey, QFileInfo(filename).filePath())
self.editOutputFile.setText(filename)
示例2: main
def main():
datestamp = datetime.datetime.now().strftime("%Y-%m-%d_%H-%M-%S")
if QT5:
ini_out_dir = QStandardPaths.writableLocation(QStandardPaths.DesktopLocation)
else:
ini_out_dir = QDesktopServices.storageLocation(QDesktopServices.DesktopLocation)
ini_name = 'org.qgis.{0}-settings_{1}.ini'.format(QGIS_APP_NAME, datestamp)
ini_out = QDir(ini_out_dir).absoluteFilePath(ini_name)
if not os.path.exists(ini_out_dir):
print('INI output directory does not exist: {0}'.format(ini_out_dir))
return
if not os.access(ini_out_dir, os.W_OK | os.X_OK):
print('INI output directory is not writeable: {0}'.format(ini_out_dir))
return
# QGIS settings
if HAS_QGSSETTINGS:
qgis_settings = QgsSettings()
else:
qgis_settings = QSettings()
# Output INI settings
ini_settings = QSettings(ini_out, QSettings.IniFormat)
qgis_keys = qgis_settings.allKeys()
for k in qgis_keys:
ini_settings.setValue(k, qgis_settings.value(k))
ini_settings.sync()
print("Settings output to: {0}".format(QDir.toNativeSeparators(ini_out)))
示例3: saveToPostGIS
def saveToPostGIS(self):
dlg = PostgisTableSelector(self, self.parameter.name().lower())
dlg.exec_()
if dlg.connection:
self.use_temporary = False
settings = QgsSettings()
mySettings = '/PostgreSQL/connections/' + dlg.connection
dbname = settings.value(mySettings + '/database')
user = settings.value(mySettings + '/username')
host = settings.value(mySettings + '/host')
port = settings.value(mySettings + '/port')
password = settings.value(mySettings + '/password')
uri = QgsDataSourceUri()
uri.setConnection(host, str(port), dbname, user, password)
uri.setDataSource(dlg.schema, dlg.table,
"the_geom" if isinstance(self.parameter, QgsProcessingParameterFeatureSink) and self.parameter.hasGeometry() else None)
connInfo = uri.connectionInfo()
(success, user, passwd) = QgsCredentials.instance().get(connInfo, None, None)
if success:
QgsCredentials.instance().put(connInfo, user, passwd)
self.leText.setText("postgis:" + uri.uri())
self.skipOutputChanged.emit(False)
self.destinationChanged.emit()
示例4: execute
def execute(self):
settings = QgsSettings()
lastDir = settings.value('Processing/lastModelsDir', '')
filename, selected_filter = QFileDialog.getOpenFileName(self.toolbox,
self.tr('Open model', 'AddModelFromFileAction'), lastDir,
self.tr('Processing model files (*.model *.MODEL)', 'AddModelFromFileAction'))
if filename:
try:
settings.setValue('Processing/lastModelsDir',
QFileInfo(filename).absoluteDir().absolutePath())
ModelerAlgorithm.fromFile(filename)
except WrongModelException:
QMessageBox.warning(
self.toolbox,
self.tr('Error reading model', 'AddModelFromFileAction'),
self.tr('The selected file does not contain a valid model', 'AddModelFromFileAction'))
return
except:
QMessageBox.warning(self.toolbox,
self.tr('Error reading model', 'AddModelFromFileAction'),
self.tr('Cannot read file', 'AddModelFromFileAction'))
return
destFilename = os.path.join(ModelerUtils.modelsFolders()[0], os.path.basename(filename))
shutil.copyfile(filename, destFilename)
QgsApplication.processingRegistry().providerById('model').refreshAlgorithms()
示例5: execute
def execute(self):
settings = QgsSettings()
lastDir = settings.value('Processing/lastScriptsDir', '')
filenames, selected_filter = QFileDialog.getOpenFileNames(self.toolbox,
self.tr('Script files', 'AddScriptFromFileAction'), lastDir,
self.tr('Script files (*.py *.PY)', 'AddScriptFromFileAction'))
if filenames:
validAlgs = 0
wrongAlgs = []
for filename in filenames:
try:
settings.setValue('Processing/lastScriptsDir',
QFileInfo(filename).absoluteDir().absolutePath())
script = ScriptAlgorithm(filename)
destFilename = os.path.join(ScriptUtils.scriptsFolders()[0], os.path.basename(filename))
with open(destFilename, 'w') as f:
f.write(script.script)
validAlgs += 1
except WrongScriptException:
wrongAlgs.append(os.path.basename(filename))
if validAlgs:
QgsApplication.processingRegistry().providerById('script').refreshAlgorithms()
if wrongAlgs:
QMessageBox.warning(self.toolbox,
self.tr('Error reading scripts', 'AddScriptFromFileAction'),
self.tr('The following files do not contain a valid script:\n-', 'AddScriptFromFileAction') +
"\n-".join(wrongAlgs))
示例6: createContext
def createContext():
"""
Creates a default processing context
"""
context = QgsProcessingContext()
context.setProject(QgsProject.instance())
invalid_features_method = ProcessingConfig.getSetting(ProcessingConfig.FILTER_INVALID_GEOMETRIES)
if invalid_features_method is None:
invalid_features_method = QgsFeatureRequest.GeometryAbortOnInvalid
context.setInvalidGeometryCheck(invalid_features_method)
def raise_error(f):
raise GeoAlgorithmExecutionException(QCoreApplication.translate("FeatureIterator",
'Features with invalid geometries found. Please fix these geometries or specify the "Ignore invalid input features" flag'))
context.setInvalidGeometryCallback(raise_error)
def raise_transform_error(f):
raise GeoAlgorithmExecutionException(QCoreApplication.translate("FeatureIterator",
'Encountered a transform error when reprojecting feature with id {}.'.format(f.id())))
context.setTransformErrorCallback(raise_transform_error)
settings = QgsSettings()
context.setDefaultEncoding(settings.value("/Processing/encoding", "System"))
return context
示例7: loadShortHelp
def loadShortHelp():
h = {}
path = os.path.dirname(__file__)
for f in os.listdir(path):
if f.endswith("yaml"):
filename = os.path.join(path, f)
with codecs.open(filename, encoding='utf-8') as stream:
with warnings.catch_warnings():
warnings.filterwarnings("ignore", category=DeprecationWarning)
for k, v in yaml.load(stream, Loader=yaml.SafeLoader).items():
if v is None:
continue
h[k] = QCoreApplication.translate("{}Algorithm".format(f[:-5].upper()), v)
version = ".".join(Qgis.QGIS_VERSION.split(".")[0:2])
overrideLocale = QgsSettings().value('locale/overrideFlag', False, bool)
if not overrideLocale:
locale = QLocale.system().name()[:2]
else:
locale = QgsSettings().value('locale/userLocale', '')
locale = locale.split("_")[0]
def replace(s):
if s is not None:
return s.replace("{qgisdocs}", "https://docs.qgis.org/%s/%s/docs" % (version, locale))
else:
return None
h = {k: replace(v) for k, v in list(h.items())}
return h
示例8: saveToGeopackage
def saveToGeopackage(self):
file_filter = self.tr('GeoPackage files (*.gpkg);;All files (*.*)', 'OutputFile')
settings = QgsSettings()
if settings.contains('/Processing/LastOutputPath'):
path = settings.value('/Processing/LastOutputPath')
else:
path = ProcessingConfig.getSetting(ProcessingConfig.OUTPUT_FOLDER)
filename, filter = QFileDialog.getSaveFileName(self, self.tr("Save to GeoPackage"), path,
file_filter, options=QFileDialog.DontConfirmOverwrite)
if not filename:
return
layer_name, ok = QInputDialog.getText(self, self.tr('Save to GeoPackage'), self.tr('Layer name'), text=self.parameter.name().lower())
if ok:
self.use_temporary = False
if not filename.lower().endswith('.gpkg'):
filename += '.gpkg'
settings.setValue('/Processing/LastOutputPath',
os.path.dirname(filename))
uri = QgsDataSourceUri()
uri.setDatabase(filename)
uri.setDataSource('', layer_name,
'geom' if isinstance(self.parameter, QgsProcessingParameterFeatureSink) and self.parameter.hasGeometry() else None)
self.leText.setText("ogr:" + uri.uri())
self.skipOutputChanged.emit(False)
self.destinationChanged.emit()
示例9: showFileSelectionDialog
def showFileSelectionDialog(self):
settings = QgsSettings()
text = str(self.text.text())
if os.path.isdir(text):
path = text
elif os.path.isdir(os.path.dirname(text)):
path = os.path.dirname(text)
elif settings.contains('/Processing/LastInputPath'):
path = str(settings.value('/Processing/LastInputPath'))
else:
path = ''
ret, selected_filter = QFileDialog.getOpenFileNames(self, self.tr('Select Files'), path,
getFileFilter(self.param))
if ret:
files = list(ret)
settings.setValue('/Processing/LastInputPath',
os.path.dirname(str(files[0])))
for i, filename in enumerate(files):
files[i] = dataobjects.getRasterSublayer(filename, self.param)
if len(files) == 1:
self.text.setText(files[0])
self.textEditingFinished()
else:
if isinstance(self.param, QgsProcessingParameterMultipleLayers):
self.text.setText(';'.join(str(f) for f in files))
else:
rowdif = len(files) - (self._table().rowCount() - self.row)
for i in range(rowdif):
self._panel().addRow()
for i, f in enumerate(files):
self._table().cellWidget(i + self.row,
self.col).setValue(f)
示例10: getVectorWriter
def getVectorWriter(self, fields, geomType, crs, context):
"""Returns a suitable writer to which features can be added as
a result of the algorithm. Use this to transparently handle
output values instead of creating your own method.
Executing this method might modify the object, adding additional
information to it, so the writer can be later accessed and
processed within QGIS. It should be called just once, since a
new call might result in previous data being replaced, thus
rendering a previously obtained writer useless.
@param fields a list of QgsField
@param geomType a suitable geometry type, as it would be passed
to a QgsVectorFileWriter constructor
@param crs the crs of the layer to create
@return writer instance of the vector writer class
:param context:
"""
if self.encoding is None:
settings = QgsSettings()
self.encoding = settings.value('/Processing/encoding', 'System', str)
w, w_dest = QgsProcessingUtils.createFeatureSink(self.value, context, fields, geomType, crs, {'fileEncoding': self.encoding})
self.value = w_dest
return w
示例11: createContext
def createContext(feedback=None):
"""
Creates a default processing context
:param feedback: Optional existing QgsProcessingFeedback object, or None to use a default feedback object
:type feedback: Optional[QgsProcessingFeedback]
:returns: New QgsProcessingContext object
:rtype: QgsProcessingContext
"""
context = QgsProcessingContext()
context.setProject(QgsProject.instance())
context.setFeedback(feedback)
invalid_features_method = ProcessingConfig.getSetting(ProcessingConfig.FILTER_INVALID_GEOMETRIES)
if invalid_features_method is None:
invalid_features_method = QgsFeatureRequest.GeometryAbortOnInvalid
context.setInvalidGeometryCheck(invalid_features_method)
settings = QgsSettings()
context.setDefaultEncoding(settings.value("/Processing/encoding", "System"))
context.setExpressionContext(createExpressionContext())
return context
示例12: __init__
def __init__(self, alg, model, algName=None, configuration=None):
QDialog.__init__(self)
self.setModal(True)
self._alg = alg # The algorithm to define in this dialog. It is an instance of QgsProcessingAlgorithm
self.model = model # The model this algorithm is going to be added to. It is an instance of QgsProcessingModelAlgorithm
self.childId = algName # The name of the algorithm in the model, in case we are editing it and not defining it for the first time
self.configuration = configuration
self.context = createContext()
self.widget_labels = {}
class ContextGenerator(QgsProcessingContextGenerator):
def __init__(self, context):
super().__init__()
self.processing_context = context
def processingContext(self):
return self.processing_context
self.context_generator = ContextGenerator(self.context)
self.setupUi()
self.params = None
settings = QgsSettings()
self.restoreGeometry(settings.value("/Processing/modelParametersDialogGeometry", QByteArray()))
示例13: reject
def reject(self):
self.param = None
settings = QgsSettings()
settings.setValue("/Processing/modelParametersDefinitionDialogGeometry", self.saveGeometry())
QDialog.reject(self)
示例14: save
def save(self, qsettings=None):
if not qsettings:
qsettings = QgsSettings()
if self.valuetype == self.SELECTION:
qsettings.setValue(self.qname, self.options.index(self.value))
else:
qsettings.setValue(self.qname, self.value)
示例15: markNews
def markNews(self):
""" mark all new plugins as new """
settings = QgsSettings()
seenPlugins = settings.value(settingsGroup + '/seen_plugins', list(self.mPlugins.keys()), type=str)
if len(seenPlugins) > 0:
for i in list(self.mPlugins.keys()):
if seenPlugins.count(i) == 0 and self.mPlugins[i]["status"] == "not installed":
self.mPlugins[i]["status"] = "new"