def on_import_gpx_file_button_clicked(self):
"""
Method to load GPS dialog
"""
layer_map = QgsMapLayerRegistry.instance().mapLayers()
if not bool(layer_map):
QMessageBox.warning(
self, "STDM", "You must add a layer first from Spatial Unit "
"Manager to import GPX to")
elif bool(layer_map):
self.gps_tool_dialog = GPSToolDialog(self.iface, self.curr_layer,
self.curr_lyr_table,
self.curr_lyr_sp_col)
self.gps_tool_dialog.show()
def on_import_gpx_file_button_clicked(self):
"""
Method to load GPS dialog
"""
source_status = self.active_layer_source()
layer_map = QgsMapLayerRegistry.instance().mapLayers()
error_title = QApplication.translate(
'SpatialUnitManagerDockWidget',
'GPS Feature Import Loading Error'
)
if len(layer_map) > 0:
if source_status is None:
QMessageBox.critical(
self,
error_title,
QApplication.translate(
'SpatialUnitManagerDockWidget',
'You have not selected a layer.\n '
'Please select a valid layer to import GPS features.'
)
)
elif source_status is False:
QMessageBox.critical(
self,
error_title,
QApplication.translate(
'SpatialUnitManagerDockWidget',
'You have selected a non-STDM entity layer.\n '
'Please select a valid layer to import GPS features.'
)
)
elif source_status is True:
self.gps_tool_dialog = GPSToolDialog(
self.iface,
self.active_entity,
self.active_table,
self.active_sp_col
)
self.gps_tool_dialog.show()
else:
QMessageBox.critical(
self,
error_title,
QApplication.translate(
'SpatialUnitManagerDockWidget',
'You must add an entity layer from Spatial Unit Manager\n'
'and select it to import GPS Features.'
)
)
def on_import_gpx_file_button_clicked(self):
"""
Method to load GPS dialog
"""
layer_map = QgsMapLayerRegistry.instance().mapLayers()
if not bool(layer_map):
QMessageBox.warning(None,"STDM","You must add a layer first, from Spatial Unit Manager to import GPX to")
elif bool(layer_map):
self.gps_tool_dialog = GPSToolDialog(self.iface, self.curr_layer, self.curr_lyr_table, self.curr_lyr_sp_col)
self.gps_tool_dialog.show()
def on_import_gpx_file_button_clicked(self):
"""
Method to load GPS dialog
"""
source_status = self.active_layer_source()
layer_map = QgsMapLayerRegistry.instance().mapLayers()
error_title = QApplication.translate(
'SpatialUnitManagerDockWidget',
'GPS Feature Import Loading Error'
)
if len(layer_map) > 0:
if source_status is None:
QMessageBox.critical(
self,
error_title,
QApplication.translate(
'SpatialUnitManagerDockWidget',
'You have not selected a layer.\n '
'Please select a valid layer to import GPS features.'
)
)
elif source_status is False:
QMessageBox.critical(
self,
error_title,
QApplication.translate(
'SpatialUnitManagerDockWidget',
'You have selected a non-STDM entity layer.\n '
'Please select a valid layer to import GPS features.'
)
)
elif source_status is True:
self.gps_tool_dialog = GPSToolDialog(
self.iface,
self.active_entity,
self.active_table,
self.active_sp_col
)
self.gps_tool_dialog.show()
else:
QMessageBox.critical(
self,
error_title,
QApplication.translate(
'SpatialUnitManagerDockWidget',
'You must add an entity layer from Spatial Unit Manager\n'
'and select it to import GPS Features.'
)
)
class SpatialUnitManagerDockWidget(QDockWidget, Ui_SpatialUnitManagerWidget):
onLayerAdded = pyqtSignal(str, object)
def __init__(self, iface, plugin=None):
"""Constructor."""
QDockWidget.__init__(self, iface.mainWindow())
# Set up the user interface from Designer.
self.setupUi(self)
self.iface = iface
self._plugin = plugin
self.gps_tool_dialog = None
# properties of last added layer
self.curr_lyr_table = None
self.curr_lyr_sp_col = None
# properties of the active layer
self.active_entity = None
self.active_table = None
self.active_sp_col = None
self.style_updated = None
self.setMaximumHeight(300)
self._curr_profile = current_profile()
self._profile_spatial_layers = []
self.stdm_fields = STDMFieldWidget()
self._populate_layers()
self._adjust_layer_drop_down_width()
self.spatial_unit = None
self.iface.currentLayerChanged.connect(self.control_digitize_toolbar)
self.onLayerAdded.connect(self.init_spatial_form)
self.add_to_canvas_button.clicked.connect(
self.on_add_to_canvas_button_clicked)
self.iface.projectRead.connect(self.on_project_opened)
def on_project_opened(self):
legend_layers = self.iface.legendInterface().layers()
for layer in legend_layers:
source = self.layer_source(layer)
if source is not bool and source is not None:
self.init_spatial_form(self.active_sp_col, layer)
def get_column_config(self, config, name):
"""
Gets joined column name config.
:param config: The config object
:type config: ColumnConfig
:param name: The column name
:type name:String
:return:
:rtype:
"""
configs = [c for c in config.columns() if c.name == name]
if len(configs) > 0:
return configs[0]
else:
return None
def sort_joined_columns(self, layer, fk_fields):
"""
Sort joined columns using the order in the configuration
:param layer: The layer containing joined layers
:type layer: QgsVectorLayer
:return:
:rtype:
"""
if not hasattr(layer, 'attributeTableConfig'):
return
entity = self._curr_profile.entity_by_name(self.curr_lyr_table)
config = layer.attributeTableConfig()
columns = config.columns()
updated_columns = []
for column in columns:
if column.name not in entity.columns.keys():
continue
if column.name in fk_fields.keys():
# hide the lookup id column
column.hidden = True
header = entity.columns[column.name].header()
joined_column_name = u'{} {}'.format(header,
fk_fields[column.name])
joined_column = self.get_column_config(config,
joined_column_name)
if joined_column is not None:
updated_columns.append(joined_column)
updated_columns.append(column)
else:
updated_columns.append(column)
config.setColumns(updated_columns)
layer.setAttributeTableConfig(config)
@staticmethod
def execute_layers_join(layer, layer_field, column_header, fk_layer,
fk_field):
"""
Joins two layers with specified field.
:param layer: The destination layer of the merge.
:type layer: QgsVectorLayer
:param layer_field: The source layer of the merge.
:type layer_field: String
:param fk_layer: The foreign key layer object.
:type fk_layer: QgsVectorLayer
:param fk_field: The foreign key layer field name.
:type fk_field: String
:return:
:rtype:
"""
join = QgsVectorJoinInfo()
join.joinLayerId = fk_layer.id()
join.joinFieldName = 'id'
join.setJoinFieldNamesSubset([fk_field])
join.targetFieldName = layer_field
join.memoryCache = True
join.prefix = u'{} '.format(column_header)
layer.addJoin(join)
def column_to_fk_layer_join(self, column, layer, join_field):
"""
Creates and executes the join by creating fk layer and running the join
method using a column object.
:param column: The column object
:type column: Object
:param layer: The layer to contain the joined fk layer
:type layer: QgsVectorLayer
:param join_field: The join field that is in the fk layer
:type join_field: String
"""
fk_entity = column.entity_relation.parent
fk_layer = vector_layer(fk_entity.name, layer_name=fk_entity.name)
QgsMapLayerRegistry.instance().addMapLayer(fk_layer, False)
# hide the fk id column
column.hidden = True
header = column.header()
self.execute_layers_join(layer, column.name, header, fk_layer,
join_field)
def join_fk_layer(self, layer, entity):
"""
Joins foreign key to the layer by creating and choosing join fields.
:param layer: The layer to contain the joined fk layer
:type layer: QgsVectorLayer
:param entity: The layer entity object
:type entity: Object
:return: A dictionary containing fk_field and column object
:rtype: OrderedDict
"""
if entity is None:
return
fk_columns = OrderedDict()
for column in entity.columns.values():
if column.TYPE_INFO == 'LOOKUP':
fk_column = 'value'
elif column.TYPE_INFO == 'ADMIN_SPATIAL_UNIT':
fk_column = 'name'
elif column.TYPE_INFO == 'FOREIGN_KEY':
display_cols = column.entity_relation.display_cols
if len(display_cols) > 0:
fk_column = display_cols[0]
else:
fk_column = 'id'
else:
fk_column = None
if fk_column is not None:
self.column_to_fk_layer_join(column, layer, fk_column)
fk_columns[column.name] = fk_column
return fk_columns
def _adjust_layer_drop_down_width(self):
"""
Adjusts the layers combobox drop down to expand based on the layer name.
"""
if len(self._profile_spatial_layers) > 0:
longest_item = max(self._profile_spatial_layers, key=len)
font_meter = QFontMetrics(self.fontMetrics())
item_width = font_meter.width(longest_item) + 80
self.stdm_layers_combo.setStyleSheet('''*
QComboBox QAbstractItemView{
min-width: 60px;
width: %s px;
}
''' % item_width)
def _populate_layers(self):
self.stdm_layers_combo.clear()
if self._curr_profile is None:
return
self.spatial_units = self._curr_profile.social_tenure.spatial_units
# Get entities containing geometry
# columns based on the config info
config_entities = self._curr_profile.entities
self.geom_entities = [
ge for ge in config_entities.values()
if ge.TYPE_INFO == 'ENTITY' and ge.has_geometry_column()
]
self._profile_spatial_layers = []
self.sp_tables = spatial_tables()
for e in self.geom_entities:
table_name = e.name
if table_name in self.sp_tables:
for i, gc in enumerate(e.geometry_columns()):
column_name = gc.name
display_name = gc.layer_display()
if i > 0:
display_name = u'{}.{}'.format(display_name, gc.name)
self._add_geometry_column_to_combo(table_name, column_name,
display_name, gc)
# Add geometry entity to the collection
self._profile_spatial_layers.append(table_name)
# Append the corresponding(profile) view to the list of entity names
str_views = self._curr_profile.social_tenure.views.keys()
for str_view in str_views:
if str_view in self.sp_tables:
self.str_view_geom_columns = table_column_names(str_view, True)
if len(self.str_view_geom_columns) > 0:
# Pick the first column
for i, geom_col in enumerate(self.str_view_geom_columns):
view_layer_name = str_view
if i > 0:
view_layer_name = '{}.{}'.format(
view_layer_name, geom_col)
self._add_geometry_column_to_combo(
str_view, geom_col, view_layer_name,
self._curr_profile.social_tenure)
# Append view to the list of spatial layers
self._profile_spatial_layers.append(str_view)
# add old config views and custom views.
for sp_table in self.sp_tables:
if sp_table in pg_views() and sp_table not in str_views and \
sp_table in profile_and_user_views(
self._curr_profile):
view_geom_columns = table_column_names(sp_table, True)
for geom_col in view_geom_columns:
view_layer_name = '{}.{}'.format(sp_table, geom_col)
self._add_geometry_column_to_combo(sp_table, geom_col,
view_layer_name,
geom_col)
def control_digitize_toolbar(self, curr_layer):
if not curr_layer is None:
try:
table, column = self._layer_table_column(curr_layer)
if table not in pg_views():
# Make sure digitizing toolbar is enabled
self.iface.digitizeToolBar().setEnabled(True)
self.set_canvas_crs(curr_layer)
elif table in pg_views():
self.iface.digitizeToolBar().setEnabled(False)
except Exception:
pass
def set_canvas_crs(self, layer):
# Sets canvas CRS
# get srid with EPSG text
if layer.isValid():
full_srid = layer.crs().authid().split(':')
srid = int(full_srid[1])
layer_crs = QgsCoordinateReferenceSystem(
srid, QgsCoordinateReferenceSystem.EpsgCrsId)
self.iface.mapCanvas().mapSettings().setDestinationCrs(layer_crs)
def init_spatial_form(self, spatial_column, curr_layer):
"""
Initializes the Layer form.
:param curr_layer: The layer for which
the widgets are set.
:type curr_layer: QgsVectorLayer
:return: None
:rtype: NoneType
"""
table, column = self._layer_table_column(curr_layer)
if table not in pg_views() and not curr_layer is None:
try:
self.stdm_fields.init_form(table, spatial_column, curr_layer)
except Exception as ex:
LOGGER.debug(unicode(ex))
def _format_layer_display_name(self, col, table):
return u'{0}.{1}'.format(table, col)
def _add_geometry_column_to_combo(self, table_name, column_name, display,
item):
icon = self._geom_icon(table_name, column_name)
self.stdm_layers_combo.addItem(icon, display, {
'table_name': table_name,
'column_name': column_name,
'item': item
})
for spatial_unit in self.spatial_units:
table = spatial_unit.name
spatial_column = [
c.name for c in spatial_unit.columns.values()
if c.TYPE_INFO == 'GEOMETRY'
]
spatial_unit_item = unicode(table + '.' + spatial_column[0])
index = self.stdm_layers_combo.findText(spatial_unit_item,
Qt.MatchFixedString)
if index >= 0:
self.stdm_layers_combo.setCurrentIndex(index)
def _layer_info_from_table_column(self, table, column):
# Returns the index and item
# data from the given table and column name
idx, layer_info = -1, None
for i in range(self.stdm_layers_combo.count()):
layer_info = self.stdm_layers_combo.itemData(i)
if layer_info['table_name'] == table and \
layer_info['column_name'] == column:
idx, layer_info = i, layer_info
break
return idx, layer_info
def _geom_icon(self, table, column):
# Get column type and apply the appropriate icon
geometry_typ = unicode(geometryType(table, column)[0])
icon = None
if geometry_typ == 'POLYGON':
icon = QIcon(':/plugins/stdm/images/icons/layer_polygon.png')
elif geometry_typ == 'LINESTRING':
icon = QIcon(':/plugins/stdm/images/icons/layer_line.png')
elif geometry_typ == 'POINT':
icon = QIcon(':/plugins/stdm/images/icons/layer_point.png')
elif geometry_typ == 'MULTIPOLYGON':
icon = QIcon(':/plugins/stdm/images/icons/layer_polygon.png')
elif geometry_typ == 'MULTILINESTRING':
icon = QIcon(':/plugins/stdm/images/icons/layer_line.png')
else:
icon = QIcon(':/plugins/stdm/images/icons/table.png')
return icon
def add_layer_by_name(self, layer_name):
"""
Add a layer when a name is supplied.
:param layer_name: The stdm layer name
:type layer_name: String
"""
index = self.stdm_layers_combo.findText(layer_name,
Qt.MatchFixedString)
if index >= 0:
self.stdm_layers_combo.setCurrentIndex(index)
# add spatial unit layer.
self.on_add_to_canvas_button_clicked()
def geom_col_layer_name(self, table, col):
"""
Returns the layer name based on geom column object.
:param col: Column Object
:type col: Object
:param table: Table name
:type table: String
:return: Layer name
:rtype: String
"""
# Check if the geom has display name, if not,
# get layer name with default naming.
if col is None: return
if isinstance(col, str) or isinstance(col, unicode):
spatial_layer_item = u'{}.{}'.format(table, col)
elif isinstance(col, SocialTenure):
spatial_layer_item = col.view_name
elif col.layer_display_name == '':
spatial_layer_item = u'{0}'.format(col.entity.short_name)
# use the layer_display_name
else:
spatial_layer_item = col.layer_display_name
return spatial_layer_item
def on_add_to_canvas_button_clicked(self):
"""
Add STDM layer to map canvas.
"""
if self.stdm_layers_combo.count() == 0:
return
sp_col_info = self.stdm_layers_combo.itemData(
self.stdm_layers_combo.currentIndex())
if sp_col_info is None:
title = QApplication.translate('SpatialUnitManagerDockWidget',
'Spatial Unit Manager')
msg = QApplication.translate(
'SpatialUnitManagerDockWidget',
'Spatial Column Layer Could not be found')
# Message: Spatial column information
# could not be found
QMessageBox.warning(self.iface.mainWindow(), title, msg)
table_name, spatial_column = sp_col_info["table_name"], \
sp_col_info["column_name"]
# Check if the layer has already been
layer_item = sp_col_info.get('item', None)
layer_name = self.geom_col_layer_name(table_name, layer_item)
if layer_name in self._map_registry_layer_names():
layer = QgsMapLayerRegistry.instance().mapLayersByName(
layer_name)[0]
self.iface.setActiveLayer(layer)
return
self.curr_lyr_table = table_name
self.curr_lyr_sp_col = spatial_column
if not layer_item is None:
if isinstance(layer_item, str) or isinstance(layer_item, unicode):
layer_name = layer_item
else:
layer_name = layer_item.layer_display()
entity = self._curr_profile.entity_by_name(table_name)
if entity is not None:
geom_col_obj = entity.columns[spatial_column]
srid = None
if geom_col_obj.srid >= 100000:
srid = geom_col_obj.srid
curr_layer = vector_layer(table_name,
geom_column=spatial_column,
layer_name=layer_name,
proj_wkt=srid)
else:
curr_layer = vector_layer(table_name,
geom_column=spatial_column,
layer_name=layer_name,
proj_wkt=None)
# for lookup layer.
else:
curr_layer = vector_layer(table_name, geom_column=spatial_column)
if curr_layer.isValid():
if curr_layer.name() in self._map_registry_layer_names():
return
QgsMapLayerRegistry.instance().addMapLayer(curr_layer)
self.zoom_to_layer()
self.onLayerAdded.emit(spatial_column, curr_layer)
self.toggle_entity_multi_layers(curr_layer)
self.set_canvas_crs(curr_layer)
# Required in order for the layer name to be set
if layer_name is not None:
QTimer.singleShot(
100, lambda: self._set_layer_display_name(
curr_layer, layer_name))
entity = self._curr_profile.entity_by_name(self.curr_lyr_table)
fk_fields = self.join_fk_layer(curr_layer, entity)
if entity is not None:
self.sort_joined_columns(curr_layer, fk_fields)
self.set_field_alias(curr_layer, entity, fk_fields)
else:
msg = QApplication.translate(
"Spatial Unit Manager",
"'{0}.{1}' layer is invalid, it cannot "
"be added to the map view.".format(table_name, spatial_column))
QMessageBox.critical(self.iface.mainWindow(),
'Spatial Unit Manager', msg)
def set_field_alias(self, layer, entity, fk_fields):
"""
Set the field alia for fk joined fields so that they are
same as the child columns.
:param layer: The layer containing the join
:type layer: QgsVectorLayer
:param entity: The entity of the layer
:type entity: Object
:param fk_fields: The dictionary containing the parent and child fields
:type fk_fields: OrderedDict
:return:
:rtype:
"""
for column, fk_field in fk_fields.iteritems():
header = entity.columns[column].header()
f_index = layer.fieldNameIndex(u'{} {}'.format(header, fk_field))
alias = u'{} Value'.format(header)
layer.addAttributeAlias(f_index, alias)
def zoom_to_layer(self):
"""
Zooms the map canvas to the extent
the active layer.
:return:
:rtype:
"""
layer = self.iface.activeLayer()
if not layer is None:
self.iface.mapCanvas().setExtent(layer.extent())
self.iface.mapCanvas().refresh()
def geom_columns(self, entity):
"""
Returns the geometry columns of an entity.
:param entity: The entity object.
:type entity: Object
:return: List of Geometry column objects
:rtype: List
"""
geom_column = [
column for column in entity.columns.values()
if column.TYPE_INFO == 'GEOMETRY'
]
return geom_column
def same_entity_layers(self):
"""
Returns layer names of an entity if they are
more than one in one entity.
:return: List in a list
:rtype: List
"""
entity_layers = []
for entity in self.geom_entities:
layer_list = self.entity_layer_names(entity)
entity_layers.append(layer_list)
return entity_layers
def entity_layer_names(self, entity):
"""
Returns layer names of an entity if
they are more than one in one entity.
:param entity: The Entity object
:param type: Object
:return: List in a list
:rtype: List
"""
cols = self.geom_columns(entity)
layer_list = []
for col in cols:
lyr_name = self.geom_col_layer_name(entity.name, col)
layer_list.append(lyr_name)
return layer_list
def layer_entity_children(self, sel_lyr_name):
layer_lists = [
layer_list for layer_list in self.same_entity_layers()
if sel_lyr_name in layer_list
]
str_view = self._curr_profile.social_tenure.view_name
if len(layer_lists) < 1:
geom_columns = table_column_names(str_view, True)
layer_lists = [geom_columns]
return layer_lists
def toggle_entity_multi_layers(self, new_layer):
"""
Removes other layers created from the entity
of the new layer.
:param new_layer: The new layer added
:type new_layer: QgsVectorLayer
:return: None
:rtype: NoneType
"""
sel_lyr_name = new_layer.name()
layer_lists = self.layer_entity_children(sel_lyr_name)
# Include layers for toggling whose entity
# has more than one geometry
if len(layer_lists) < 1:
return
# if the layer_list is the
# parent of selected layer
for layer_name in layer_lists[0]:
# remove other layers
# of the same entity
if layer_name != sel_lyr_name:
layer_objects = QgsMapLayerRegistry. \
instance().mapLayersByName(layer_name)
if len(layer_objects) > 0:
for layer in layer_objects:
layer_id = layer.id()
QgsMapLayerRegistry. \
instance().removeMapLayer(layer_id)
# Change the crs of the canvas based on the new layer
layer_list = QgsMapLayerRegistry.instance(). \
mapLayersByName(sel_lyr_name)
if len(layer_list) > 0:
self.set_canvas_crs(layer_list[0])
def _set_layer_display_name(self, layer, name):
try:
layer.setName(name)
except RuntimeError:
pass
def _layer_table_column(self, layer):
# Returns the table and column name
# that a layer belongs to.
table, column = '', ''
if hasattr(layer, 'dataProvider'):
if layer.dataProvider().name() == 'postgres':
layerConnStr = layer.dataProvider().dataSourceUri()
dataSourceURI = QgsDataSourceURI(layerConnStr)
table, column = dataSourceURI.table(), \
dataSourceURI.geometryColumn()
return table, column
def _map_registry_layer_names(self):
"""
Returns a list of layers names.
"""
layers = QgsMapLayerRegistry.instance().mapLayers()
layer_names = [lyr.name() for lyr in layers.values()]
return layer_names
@pyqtSignature("")
def on_set_display_name_button_clicked(self):
"""
Method to change display name
"""
layer_names_ids = pg_layerNamesIDMapping().reverse
layer = self.iface.activeLayer()
if not layer is None:
table_name = layer_names_ids.get(layer.id(), '')
if table_name:
# Check if the table name is in the current profile
if table_name in self._profile_spatial_layers:
prompt = \
u"Set the display name for '{0}' layer".format(
layer.name()
)
display_name, ok = QInputDialog.getText(
self, 'Spatial Unit '
'Manager', prompt)
if ok and display_name:
# Get layer table and columns names
table, column = self._layer_table_column(layer)
if table and column:
idx, layer_info = \
self._layer_info_from_table_column(
table,
column
)
# Get item in the combo corresponding to the layer
if idx != -1:
self.stdm_layers_combo.setItemText(
idx, display_name)
layer.setName(display_name)
# Update configuration item
config_item = layer_info.get('item', None)
if not config_item is None:
config_item.layer_display_name = \
display_name
# Update configuration
save_configuration()
else:
msg = QApplication.translate(
"Spatial Unit Manager", u"The layer does not "
u"belong in the '{0}' "
u"profile.\nThe display name "
u"will not be set."
u"".format(self._curr_profile.name))
QMessageBox.critical(self.iface.mainWindow(),
'Spatial Unit Manager', msg)
def active_layer_source(self):
"""
Get the layer table name if the source is from the database.
:return: The a Boolean True if a valid source is found or False if not.
Alternatively, None if there is no active layer.
:rtype: Boolean or NoneType
"""
active_layer = self.iface.activeLayer()
return self.layer_source(active_layer)
def layer_source(self, layer):
"""
Gets the layer source.
:param layer: The layer
:type layer: Any
:return: Layer Source or None
:rtype:
"""
if layer is None:
return None
source = layer.source()
if source is None:
return False
source_value = dict(re.findall('(\S+)="?(.*?)"? ', source))
try:
table = source_value['table'].split('.')
table_name = table[1].strip('"')
if table_name in pg_views():
return False
entity = self._curr_profile.entity_by_name(table_name)
if entity is None:
return False
else:
self.active_entity = entity
self.active_table = table_name
# get all spatial columns of the entity.
spatial_columns = [
c.name for c in entity.columns.values()
if c.TYPE_INFO == 'GEOMETRY'
]
# get all fields excluding the geometry.
layer_fields = [
field.name() for field in layer.pendingFields()
]
# get the currently being used geometry column
active_sp_cols = [
col for col in spatial_columns if col not in layer_fields
]
if len(active_sp_cols) == 1:
self.active_sp_col = active_sp_cols[0]
return True
except KeyError:
return False
@pyqtSignature("")
def on_import_gpx_file_button_clicked(self):
"""
Method to load GPS dialog
"""
source_status = self.active_layer_source()
layer_map = QgsMapLayerRegistry.instance().mapLayers()
error_title = QApplication.translate(
'SpatialUnitManagerDockWidget', 'GPS Feature Import Loading Error')
if len(layer_map) > 0:
if source_status is None:
QMessageBox.critical(
self, error_title,
QApplication.translate(
'SpatialUnitManagerDockWidget',
'You have not selected a layer.\n '
'Please select a valid layer to import GPS features.'))
elif source_status is False:
QMessageBox.critical(
self, error_title,
QApplication.translate(
'SpatialUnitManagerDockWidget',
'You have selected a non-STDM entity layer.\n '
'Please select a valid layer to import GPS features.'))
elif source_status is True:
self.gps_tool_dialog = GPSToolDialog(self.iface,
self.active_entity,
self.active_table,
self.active_sp_col)
self.gps_tool_dialog.show()
else:
QMessageBox.critical(
self, error_title,
QApplication.translate(
'SpatialUnitManagerDockWidget',
'You must add an entity layer from Spatial Unit Manager\n'
'and select it to import GPS Features.'))
def _valid_entity(self):
"""
Checks if the current active layer in the layer panel
represents a valid entity in the current profile
:return: Error object
:rtype: Object
"""
entity_profile = current_profile()
entity_obj = entity_profile.entity_by_name(self.curr_lyr_table)
if entity_obj is None:
return None
return entity_obj
def closeEvent(self, event):
"""
On close of the dock window, this event is executed
to run close_dock method
:param event: The close event
:type QCloseEvent
:return: None
"""
self._plugin.spatialLayerManager.setChecked(False)
class SpatialUnitManagerDockWidget(QDockWidget, Ui_SpatialUnitManagerWidget):
def __init__(self, iface):
"""Constructor."""
QDockWidget.__init__(self, iface.mainWindow())
# Set up the user interface from Designer.
# After setupUI you can access any designer object by doing
# self.<objectname>, and you can use autoconnect slots - see
# http://qt-project.org/doc/qt-4.8/designer-using-a-ui-file.html
# #widgets-and-dialogs-with-auto-connect
self.setupUi(self)
self._populate_layers()
self.iface = iface
self.gps_tool_dialog = None
self.curr_lyr_table = None
self.curr_lyr_sp_col = None
self.curr_layer = None
def _populate_layers(self):
self.stdm_layers_combo.clear()
self._stdm_tables = {}
self.spatial_layers = []
self.layers_info = []
for spt in spatial_tables():
sp_columns = table_column_names(spt,True)
self._stdm_tables[spt]=sp_columns
# QMessageBox.information(None,"Title",str(sp_columns))
# Add spatial columns to combo box
for sp_col in sp_columns:
# Get column type and apply the appropriate icon
geometry_typ = str(geometryType(spt, sp_col)[0])
if geometry_typ == "POLYGON":
self.icon = QIcon(":/plugins/stdm/images/icons/layer_polygon.png")
elif geometry_typ == "LINESTRING":
self.icon = QIcon(":/plugins/stdm/images/icons/layer_line.png")
elif geometry_typ == "POINT":
self.icon = QIcon(":/plugins/stdm/images/icons/layer_point.png")
else:
self.icon = QIcon(":/plugins/stdm/images/icons/table.png")
# QMessageBox.information(None,"Title",str(geometry_typ))
self.stdm_layers_combo.addItem(self.icon, self._format_layer_display_name(sp_col, spt),
{"table_name":spt,"col_name": sp_col})
def _format_layer_display_name(self, col, table):
return u"{0}.{1}".format(table,col)
@pyqtSignature("")
def on_add_to_canvas_button_clicked(self):
'''
Method used to add layers to canvas
'''
if self.stdm_layers_combo.count() == 0:
# Return message that there are no layers
QMessageBox.warning(None,"No Layers")
sp_col_info = self.stdm_layers_combo.itemData(self.stdm_layers_combo.currentIndex())
if sp_col_info is None:
# Message: Spatial column information could not be found
QMessageBox.warning(None,"Spatial Column Layer Could not be found")
table_name, spatial_column = sp_col_info["table_name"], sp_col_info["col_name"]
# Used in gpx_table.py
self.curr_lyr_table = table_name
self.curr_lyr_sp_col = spatial_column
self.curr_layer = vector_layer(table_name, geom_column=spatial_column)
if self.curr_layer.isValid():
QgsMapLayerRegistry.instance().addMapLayer(self.curr_layer)
# Append column name to spatial table
_current_display_name = str(table_name) + "." + str(spatial_column)
# Get configuration file display name if it exists
if check_if_display_name_exits(_current_display_name):
xml_display_name = get_xml_display_name(_current_display_name)
self.curr_layer.setLayerName(xml_display_name)
# Write initial display name as original name of the layer
elif not check_if_display_name_exits(_current_display_name):
write_display_name(_current_display_name, _current_display_name)
self.curr_layer.setLayerName(_current_display_name)
@pyqtSignature("")
def on_set_display_name_button_clicked(self):
'''
Method to change display name
'''
layer_map = QgsMapLayerRegistry.instance().mapLayers()
for name, layer in layer_map.iteritems():
if layer == self.iface.activeLayer():
_name = layer.name()
display_name, ok = QInputDialog.getText(None,"Change Display Name",
"Current Name is {0}".format(layer.originalName()))
if ok and display_name != "":
layer.setLayerName(display_name)
write_changed_display_name(_name, display_name)
elif not ok and display_name == "":
layer.originalName()
else:
continue
@pyqtSignature("")
def on_import_gpx_file_button_clicked(self):
"""
Method to load GPS dialog
"""
layer_map = QgsMapLayerRegistry.instance().mapLayers()
if not bool(layer_map):
QMessageBox.warning(None,"STDM","You must add a layer first, from Spatial Unit Manager to import GPX to")
elif bool(layer_map):
self.gps_tool_dialog = GPSToolDialog(self.iface, self.curr_layer, self.curr_lyr_table, self.curr_lyr_sp_col)
self.gps_tool_dialog.show()
class SpatialUnitManagerDockWidget(QDockWidget, Ui_SpatialUnitManagerWidget):
onLayerAdded = pyqtSignal(str, object)
def __init__(self, iface, plugin=None):
"""Constructor."""
QDockWidget.__init__(self, iface.mainWindow())
# Set up the user interface from Designer.
self.setupUi(self)
self.iface = iface
self._plugin = plugin
self.gps_tool_dialog = None
self.curr_lyr_table = None
self.curr_lyr_sp_col = None
self.curr_layer = None
self.setMaximumHeight(300)
self._curr_profile = current_profile()
self._profile_spatial_layers = []
self.stdm_fields = STDMFieldWidget()
self._populate_layers()
self.feature_details = DetailsTreeView(iface, self)
self.spatial_unit = None
self.iface.currentLayerChanged.connect(self.control_digitize_toolbar)
self.onLayerAdded.connect(self.init_spatial_form)
self.add_to_canvas_button.clicked.connect(
self.on_add_to_canvas_button_clicked)
self.feature_details_btn.clicked.connect(
self.feature_details.activate_feature_details)
self.iface.currentLayerChanged.connect(
lambda: self.feature_details.activate_feature_details(False))
def _populate_layers(self):
self.stdm_layers_combo.clear()
if self._curr_profile is None:
return
self.spatial_unit = self._curr_profile. \
social_tenure.spatial_unit
# Get entities containing geometry
# columns based on the config info
config_entities = self._curr_profile.entities
self.geom_entities = [
ge for ge in config_entities.values()
if ge.TYPE_INFO == 'ENTITY' and ge.has_geometry_column()
]
self._profile_spatial_layers = []
self.sp_tables = spatial_tables()
for e in self.geom_entities:
table_name = e.name
if table_name in self.sp_tables:
for gc in e.geometry_columns():
column_name = gc.name
display_name = gc.layer_display()
self._add_geometry_column_to_combo(table_name, column_name,
display_name, gc)
# Add geometry entity to the collection
self._profile_spatial_layers.append(table_name)
# Append the corresponding(profile)
# view to the list of entity names
str_view = self._curr_profile.social_tenure.view_name
if str_view in self.sp_tables:
self.str_view_geom_columns = table_column_names(str_view, True)
if len(self.str_view_geom_columns) > 0:
# Pick the first column
# geom_col = geom_columns[0]
for i, geom_col in enumerate(self.str_view_geom_columns):
if i > 0:
view_layer_name = self._curr_profile. \
social_tenure.layer_display()
view_layer_name = '{}.{}'.format(
view_layer_name, geom_col)
else:
view_layer_name = self._curr_profile. \
social_tenure.layer_display()
self._add_geometry_column_to_combo(
str_view, geom_col, view_layer_name,
self._curr_profile.social_tenure)
# Append view to the list of spatial layers
self._profile_spatial_layers.append(view_layer_name)
def control_digitize_toolbar(self, curr_layer):
if not curr_layer is None:
try:
table, column = self._layer_table_column(curr_layer)
if table not in pg_views():
# Make sure digitizing toolbar is enabled
self.iface.digitizeToolBar().setEnabled(True)
self.set_canvas_crs(curr_layer)
elif table in pg_views():
self.iface.digitizeToolBar().setEnabled(False)
except Exception:
pass
def set_canvas_crs(self, layer):
# Sets canvas CRS
# get srid with EPSG text
if layer.isValid():
full_srid = layer.crs().authid().split(':')
srid = int(full_srid[1])
layer_crs = QgsCoordinateReferenceSystem(
srid, QgsCoordinateReferenceSystem.EpsgCrsId)
self.iface.mapCanvas().mapRenderer().setDestinationCrs(layer_crs)
def init_spatial_form(self, spatial_column, curr_layer):
"""
Initializes the Layer form.
:param curr_layer: The layer for which
the widgets are set.
:type curr_layer: QgsVectorLayer
:return: None
:rtype: NoneType
"""
table, column = self._layer_table_column(curr_layer)
if table not in pg_views() and not curr_layer is None:
try:
self.stdm_fields.init_form(table, spatial_column, curr_layer)
except Exception as ex:
LOGGER.debug(unicode(ex))
def _format_layer_display_name(self, col, table):
return u'{0}.{1}'.format(table, col)
def _add_geometry_column_to_combo(self, table_name, column_name, display,
item):
icon = self._geom_icon(table_name, column_name)
self.stdm_layers_combo.addItem(icon, display, {
'table_name': table_name,
'column_name': column_name,
'item': item
})
table = self.spatial_unit.name
spatial_column = [
c.name for c in self.spatial_unit.columns.values()
if c.TYPE_INFO == 'GEOMETRY'
]
spatial_unit_item = unicode(table + '.' + spatial_column[0])
index = self.stdm_layers_combo.findText(spatial_unit_item,
Qt.MatchFixedString)
if index >= 0:
self.stdm_layers_combo.setCurrentIndex(index)
def _layer_info_from_table_column(self, table, column):
# Returns the index and item
# data from the given table and column name
idx, layer_info = -1, None
for i in range(self.stdm_layers_combo.count()):
layer_info = self.stdm_layers_combo.itemData(i)
if layer_info['table_name'] == table and \
layer_info['column_name'] == column:
idx, layer_info = i, layer_info
break
return idx, layer_info
def _geom_icon(self, table, column):
# Get column type and apply the appropriate icon
geometry_typ = unicode(geometryType(table, column)[0])
icon = None
if geometry_typ == 'POLYGON':
icon = QIcon(':/plugins/stdm/images/icons/layer_polygon.png')
elif geometry_typ == 'LINESTRING':
icon = QIcon(':/plugins/stdm/images/icons/layer_line.png')
elif geometry_typ == 'POINT':
icon = QIcon(':/plugins/stdm/images/icons/layer_point.png')
else:
icon = QIcon(':/plugins/stdm/images/icons/table.png')
return icon
def add_layer_by_name(self, layer_name):
"""
Add a layer when a name is supplied.
:param layer_name: The stdm layer name
:type layer_name: String
:return: None
:rtype: NoneType
"""
index = self.stdm_layers_combo.findText(layer_name,
Qt.MatchFixedString)
if index >= 0:
self.stdm_layers_combo.setCurrentIndex(index)
# add spatial unit layer.
self.on_add_to_canvas_button_clicked()
def geom_col_layer_name(self, table, col):
"""
Returns the layer name based on geom column object.
:param col: Column Object
:type col: Object
:param table: Table name
:type table: String
:return: Layer name
:rtype: String
"""
# Check if the geom has display name, if not,
# get layer name with default naming.
if col.layer_display_name == '':
spatial_layer_item = unicode('{}.{}'.format(table, col.name))
# use the layer_display_name
else:
spatial_layer_item = col.layer_display_name
return spatial_layer_item
def on_add_to_canvas_button_clicked(self):
"""
Add STDM layer to map canvas.
"""
if self.stdm_layers_combo.count() == 0:
return
sp_col_info = self.stdm_layers_combo.itemData(
self.stdm_layers_combo.currentIndex())
if sp_col_info is None:
title = QApplication.translate('SpatialUnitManagerDockWidget',
'Spatial Unit Manager')
msg = QApplication.translate(
'SpatialUnitManagerDockWidget',
'Spatial Column Layer Could not be found')
# Message: Spatial column information
# could not be found
QMessageBox.warning(self.iface.mainWindow(), title, msg)
table_name, spatial_column = sp_col_info["table_name"], \
sp_col_info["column_name"]
# Check if the layer has already been
layer_item = sp_col_info.get('item', None)
layer_name = self.geom_col_layer_name(table_name, layer_item)
if layer_name in self._map_registry_layer_names():
return
# Used in gpx_table.py
self.curr_lyr_table = table_name
self.curr_lyr_sp_col = spatial_column
if not layer_item is None:
curr_layer = vector_layer(table_name,
geom_column=spatial_column,
layer_name=layer_item.layer_display())
else:
curr_layer = vector_layer(table_name, geom_column=spatial_column)
if curr_layer.isValid():
QgsMapLayerRegistry.instance().addMapLayer(curr_layer)
self.toggle_entity_multi_layers(curr_layer)
self.set_canvas_crs(curr_layer)
# Required in order for the layer name to be set
QTimer.singleShot(
100, lambda: self._set_layer_display_name(
curr_layer, layer_item.layer_display()))
self.zoom_to_layer()
self.onLayerAdded.emit(spatial_column, curr_layer)
else:
msg = QApplication.translate(
"Spatial Unit Manager",
"'{0}.{1}' layer is invalid, it cannot "
"be added to the map view.".format(table_name, spatial_column))
QMessageBox.critical(self.iface.mainWindow(),
'Spatial Unit Manager', msg)
def zoom_to_layer(self):
"""
Zooms the map canvas to the extent
the active layer.
:return:
:rtype:
"""
layer = self.iface.activeLayer()
if not layer is None:
self.iface.mapCanvas().setExtent(layer.extent())
self.iface.mapCanvas().refresh()
def geom_columns(self, entity):
"""
Get the geometry column
:return:
:rtype:
"""
geom_column = [
column for column in entity.columns.values()
if column.TYPE_INFO == 'GEOMETRY'
]
return geom_column
def same_entity_layers(self):
"""
Returns layer names of an entity if they are
more than one in one entity.
:return: List in a list
:rtype: List
"""
entity_layers = []
for entity in self.geom_entities:
layer_list = self.entity_layer_names(entity)
entity_layers.append(layer_list)
return entity_layers
def entity_layer_names(self, entity):
"""
Returns layer names of an entity if
they are more than one in one entity.
:param entity: The Entity object
:param type: Object
:return: List in a list
:rtype: List
"""
cols = self.geom_columns(entity)
layer_list = []
for col in cols:
lyr_name = self.geom_col_layer_name(entity.name, col)
layer_list.append(lyr_name)
return layer_list
def layer_entity_children(self, sel_lyr_name):
layer_lists = [
layer_list for layer_list in self.same_entity_layers()
if sel_lyr_name in layer_list
]
str_view = self._curr_profile.social_tenure.view_name
if len(layer_lists) < 1:
geom_columns = table_column_names(str_view, True)
layer_lists = [geom_columns]
return layer_lists
def toggle_entity_multi_layers(self, new_layer):
"""
Removes other layers created from the entity
of the new layer.
:param new_layer: The new layer added
:type new_layer: QgsVectorLayer
:return: None
:rtype: NoneType
"""
sel_lyr_name = new_layer.name()
layer_lists = self.layer_entity_children(sel_lyr_name)
# Include layers for toggling whose entity
# has more than one geometry
if len(layer_lists) < 1:
return
# if the layer_list is the
# parent of selected layer
for layer_name in layer_lists[0]:
# remove other layers
# of the same entity
if layer_name != sel_lyr_name:
layer_objects = QgsMapLayerRegistry. \
instance().mapLayersByName(layer_name)
if len(layer_objects) > 0:
for layer in layer_objects:
layer_id = layer.id()
QgsMapLayerRegistry. \
instance().removeMapLayer(layer_id)
# Change the crs of the canvas based on the new layer
layer_list = QgsMapLayerRegistry.instance(). \
mapLayersByName(sel_lyr_name)
if len(layer_list) > 0:
self.set_canvas_crs(layer_list[0])
def _set_layer_display_name(self, layer, name):
try:
layer.setLayerName(name)
except RuntimeError:
pass
def _layer_table_column(self, layer):
# Returns the table and column name
# that a layer belongs to.
table, column = '', ''
if hasattr(layer, 'dataProvider'):
if layer.dataProvider().name() == 'postgres':
layerConnStr = layer.dataProvider().dataSourceUri()
dataSourceURI = QgsDataSourceURI(layerConnStr)
table, column = dataSourceURI.table(), \
dataSourceURI.geometryColumn()
return table, column
def _map_registry_layer_names(self):
"""
Returns a list of layers names.
"""
layers = QgsMapLayerRegistry.instance().mapLayers()
layer_names = [lyr.name() for lyr in layers.values()]
return layer_names
@pyqtSignature("")
def on_set_display_name_button_clicked(self):
"""
Method to change display name
"""
layer_names_ids = pg_layerNamesIDMapping().reverse
layer = self.iface.activeLayer()
if not layer is None:
table_name = layer_names_ids.get(layer.id(), '')
if table_name:
# Check if the table name is in the current profile
if table_name in self._profile_spatial_layers:
prompt = \
u"Set the display name for '{0}' layer".format(
layer.name()
)
display_name, ok = QInputDialog.getText(
self, 'Spatial Unit '
'Manager', prompt)
if ok and display_name:
# Get layer table and columns names
table, column = self._layer_table_column(layer)
if table and column:
idx, layer_info = \
self._layer_info_from_table_column(
table,
column
)
# Get item in the combo corresponding to the layer
if idx != -1:
self.stdm_layers_combo.setItemText(
idx, display_name)
layer.setLayerName(display_name)
# Update configuration item
config_item = layer_info.get('item', None)
if not config_item is None:
config_item.layer_display_name = \
display_name
# Update configuration
save_configuration()
else:
msg = QApplication.translate(
"Spatial Unit Manager", u"The layer does not "
u"belong in the '{0}' "
u"profile.\nThe display name "
u"will not be set."
u"".format(self._curr_profile.name))
QMessageBox.critical(self.iface.mainWindow(),
'Spatial Unit Manager', msg)
@pyqtSignature("")
def on_import_gpx_file_button_clicked(self):
"""
Method to load GPS dialog
"""
layer_map = QgsMapLayerRegistry.instance().mapLayers()
if not bool(layer_map):
QMessageBox.warning(
self, "STDM", "You must add a layer first from Spatial Unit "
"Manager to import GPX to")
elif bool(layer_map):
self.gps_tool_dialog = GPSToolDialog(self.iface, self.curr_layer,
self.curr_lyr_table,
self.curr_lyr_sp_col)
self.gps_tool_dialog.show()
def closeEvent(self, event):
"""
On close of the dock window, this event is executed
to run close_dock method
:param event: The close event
:type QCloseEvent
:return: None
"""
self._plugin.spatialLayerManager.setChecked(False)
class SpatialUnitManagerDockWidget(
QDockWidget, Ui_SpatialUnitManagerWidget
):
onLayerAdded = pyqtSignal(str, object)
def __init__(self, iface, plugin=None):
"""Constructor."""
QDockWidget.__init__(self, iface.mainWindow())
# Set up the user interface from Designer.
self.setupUi(self)
self.iface = iface
self._plugin = plugin
self.gps_tool_dialog = None
# properties of last added layer
self.curr_lyr_table = None
self.curr_lyr_sp_col = None
# properties of the active layer
self.active_entity = None
self.active_table = None
self.active_sp_col = None
self.style_updated = None
self.setMaximumHeight(300)
self._curr_profile = current_profile()
self._profile_spatial_layers = []
self.stdm_fields = STDMFieldWidget(plugin)
self._populate_layers()
self._adjust_layer_drop_down_width()
self.spatial_unit = None
self.iface.currentLayerChanged.connect(
self.control_digitize_toolbar
)
self.onLayerAdded.connect(
self.init_spatial_form
)
self.add_to_canvas_button.clicked.connect(
self.on_add_to_canvas_button_clicked
)
self.iface.projectRead.connect(self.on_project_opened)
def on_project_opened(self):
legend_layers = self.iface.legendInterface().layers()
for layer in legend_layers:
source = self.layer_source(layer)
if source is not bool and source is not None:
self.init_spatial_form(self.active_sp_col, layer)
def get_column_config(self, config, name):
"""
Gets joined column name config.
:param config: The config object
:type config: ColumnConfig
:param name: The column name
:type name:String
:return:
:rtype:
"""
configs = [c for c in config.columns() if c.name == name]
if len(configs) > 0:
return configs[0]
else:
return None
def sort_joined_columns(self, layer, fk_fields):
"""
Sort joined columns using the order in the configuration
:param layer: The layer containing joined layers
:type layer: QgsVectorLayer
:return:
:rtype:
"""
if not hasattr(layer, 'attributeTableConfig'):
return
entity = self._curr_profile.entity_by_name(self.curr_lyr_table)
config = layer.attributeTableConfig()
columns = config.columns()
updated_columns = []
for column in columns:
if column.name not in entity.columns.keys():
continue
if column.name in fk_fields.keys():
# hide the lookup id column
column.hidden = True
header = entity.columns[column.name].header()
joined_column_name = u'{} {}'.format(header, fk_fields[column.name])
joined_column = self.get_column_config(config, joined_column_name)
if joined_column is not None:
updated_columns.append(joined_column)
updated_columns.append(column)
else:
updated_columns.append(column)
config.setColumns(updated_columns)
layer.setAttributeTableConfig(config)
@staticmethod
def execute_layers_join(layer, layer_field, column_header, fk_layer, fk_field):
"""
Joins two layers with specified field.
:param layer: The destination layer of the merge.
:type layer: QgsVectorLayer
:param layer_field: The source layer of the merge.
:type layer_field: String
:param fk_layer: The foreign key layer object.
:type fk_layer: QgsVectorLayer
:param fk_field: The foreign key layer field name.
:type fk_field: String
:return:
:rtype:
"""
join = QgsVectorJoinInfo()
join.joinLayerId = fk_layer.id()
join.joinFieldName = 'id'
join.setJoinFieldNamesSubset([fk_field])
join.targetFieldName = layer_field
join.memoryCache = True
join.prefix = u'{} '.format(column_header)
layer.addJoin(join)
def column_to_fk_layer_join(self, column, layer, join_field):
"""
Creates and executes the join by creating fk layer and running the join
method using a column object.
:param column: The column object
:type column: Object
:param layer: The layer to contain the joined fk layer
:type layer: QgsVectorLayer
:param join_field: The join field that is in the fk layer
:type join_field: String
"""
fk_entity = column.entity_relation.parent
fk_layer = vector_layer(
fk_entity.name,
layer_name=fk_entity.name
)
QgsMapLayerRegistry.instance().addMapLayer(
fk_layer, False
)
# hide the fk id column
column.hidden = True
header = column.header()
self.execute_layers_join(layer, column.name, header, fk_layer, join_field)
def join_fk_layer(self, layer, entity):
"""
Joins foreign key to the layer by creating and choosing join fields.
:param layer: The layer to contain the joined fk layer
:type layer: QgsVectorLayer
:param entity: The layer entity object
:type entity: Object
:return: A dictionary containing fk_field and column object
:rtype: OrderedDict
"""
if entity is None:
return
fk_columns = OrderedDict()
for column in entity.columns.values():
if column.TYPE_INFO == 'LOOKUP':
fk_column = 'value'
elif column.TYPE_INFO == 'ADMIN_SPATIAL_UNIT':
fk_column = 'name'
elif column.TYPE_INFO == 'FOREIGN_KEY':
display_cols = column.entity_relation.display_cols
if len(display_cols) > 0:
fk_column = display_cols[0]
else:
fk_column = 'id'
else:
fk_column = None
if fk_column is not None:
self.column_to_fk_layer_join(column, layer, fk_column)
fk_columns[column.name] = fk_column
return fk_columns
def _adjust_layer_drop_down_width(self):
"""
Adjusts the layers combobox drop down to expand based on the layer name.
"""
if len(self._profile_spatial_layers) > 0:
longest_item = max(self._profile_spatial_layers, key=len)
font_meter = QFontMetrics(self.fontMetrics())
item_width = font_meter.width(longest_item) + 80
self.stdm_layers_combo.setStyleSheet(
'''*
QComboBox QAbstractItemView{
min-width: 60px;
width: %s px;
}
''' % item_width
)
def _populate_layers(self):
self.stdm_layers_combo.clear()
if self._curr_profile is None:
return
self.spatial_units = self._curr_profile.social_tenure.spatial_units
# Get entities containing geometry
# columns based on the config info
config_entities = self._curr_profile.entities
self.geom_entities = [
ge for ge in config_entities.values()
if ge.TYPE_INFO == 'ENTITY' and
ge.has_geometry_column()
]
self._profile_spatial_layers = []
self.sp_tables = spatial_tables()
for e in self.geom_entities:
table_name = e.name
if table_name in self.sp_tables:
for i, gc in enumerate(e.geometry_columns()):
column_name = gc.name
display_name = gc.layer_display()
if i > 0:
display_name = u'{}.{}'.format(display_name, gc.name)
self._add_geometry_column_to_combo(
table_name,
column_name,
display_name,
gc
)
# Add geometry entity to the collection
self._profile_spatial_layers.append(
table_name
)
# Append the corresponding(profile) view to the list of entity names
str_views = self._curr_profile.social_tenure.views.keys()
for str_view in str_views:
if str_view in self.sp_tables:
self.str_view_geom_columns = table_column_names(
str_view, True
)
if len(self.str_view_geom_columns) > 0:
# Pick the first column
for i, geom_col in enumerate(self.str_view_geom_columns):
view_layer_name = str_view
if i > 0:
view_layer_name = '{}.{}'.format(
view_layer_name, geom_col
)
self._add_geometry_column_to_combo(
str_view,
geom_col,
view_layer_name,
self._curr_profile.social_tenure
)
# Append view to the list of spatial layers
self._profile_spatial_layers.append(
str_view
)
# add old config views and custom views.
for sp_table in self.sp_tables:
if sp_table in pg_views() and sp_table not in str_views and \
sp_table in profile_and_user_views(
self._curr_profile):
view_geom_columns = table_column_names(
sp_table, True
)
for geom_col in view_geom_columns:
view_layer_name = '{}.{}'.format(
sp_table, geom_col
)
self._add_geometry_column_to_combo(
sp_table,
geom_col,
view_layer_name,
geom_col
)
def control_digitize_toolbar(self, curr_layer):
if not curr_layer is None:
try:
table, column = self._layer_table_column(
curr_layer
)
if table not in pg_views():
# Make sure digitizing toolbar is enabled
self.iface.digitizeToolBar().setEnabled(True)
self.set_canvas_crs(curr_layer)
elif table in pg_views():
self.iface.digitizeToolBar().setEnabled(False)
except Exception:
pass
def set_canvas_crs(self, layer):
# Sets canvas CRS
# get srid with EPSG text
if layer.isValid():
full_srid = layer.crs().authid().split(':')
srid = int(full_srid[1])
layer_crs = QgsCoordinateReferenceSystem(
srid,
QgsCoordinateReferenceSystem.EpsgCrsId
)
self.iface.mapCanvas().mapSettings().setDestinationCrs(layer_crs)
def init_spatial_form(self, spatial_column, curr_layer):
"""
Initializes the Layer form.
:param curr_layer: The layer for which
the widgets are set.
:type curr_layer: QgsVectorLayer
:return: None
:rtype: NoneType
"""
table, column = self._layer_table_column(curr_layer)
if table not in pg_views() and not curr_layer is None:
try:
self.stdm_fields.init_form(
table, spatial_column, curr_layer
)
except Exception as ex:
LOGGER.debug(unicode(ex))
def _format_layer_display_name(self, col, table):
return u'{0}.{1}'.format(table, col)
def _add_geometry_column_to_combo(
self, table_name, column_name, display, item
):
icon = self._geom_icon(table_name, column_name)
self.stdm_layers_combo.addItem(icon, display, {
'table_name': table_name,
'column_name': column_name,
'item': item
}
)
for spatial_unit in self.spatial_units:
table = spatial_unit.name
spatial_column = [
c.name
for c in spatial_unit.columns.values()
if c.TYPE_INFO == 'GEOMETRY'
]
spatial_unit_item = unicode(
table + '.' + spatial_column[0]
)
index = self.stdm_layers_combo.findText(
spatial_unit_item, Qt.MatchFixedString
)
if index >= 0:
self.stdm_layers_combo.setCurrentIndex(index)
def _layer_info_from_table_column(
self, table, column
):
# Returns the index and item
# data from the given table and column name
idx, layer_info = -1, None
for i in range(self.stdm_layers_combo.count()):
layer_info = self.stdm_layers_combo.itemData(i)
if layer_info['table_name'] == table and \
layer_info['column_name'] == column:
idx, layer_info = i, layer_info
break
return idx, layer_info
def _geom_icon(self, table, column):
# Get column type and apply the appropriate icon
geometry_typ = unicode(geometryType(table, column)[0])
icon = None
if geometry_typ == 'POLYGON':
icon = QIcon(
':/plugins/stdm/images/icons/layer_polygon.png'
)
elif geometry_typ == 'LINESTRING':
icon = QIcon(
':/plugins/stdm/images/icons/layer_line.png'
)
elif geometry_typ == 'POINT':
icon = QIcon(
':/plugins/stdm/images/icons/layer_point.png'
)
elif geometry_typ == 'MULTIPOLYGON':
icon = QIcon(
':/plugins/stdm/images/icons/layer_polygon.png'
)
elif geometry_typ == 'MULTILINESTRING':
icon = QIcon(
':/plugins/stdm/images/icons/layer_line.png'
)
else:
icon = QIcon(
':/plugins/stdm/images/icons/table.png'
)
return icon
def add_layer_by_name(self, layer_name):
"""
Add a layer when a name is supplied.
:param layer_name: The stdm layer name
:type layer_name: String
"""
index = self.stdm_layers_combo.findText(
layer_name, Qt.MatchFixedString
)
if index >= 0:
self.stdm_layers_combo.setCurrentIndex(index)
# add spatial unit layer.
self.on_add_to_canvas_button_clicked()
def geom_col_layer_name(self, table, col):
"""
Returns the layer name based on geom column object.
:param col: Column Object
:type col: Object
:param table: Table name
:type table: String
:return: Layer name
:rtype: String
"""
# Check if the geom has display name, if not,
# get layer name with default naming.
if col is None: return
if isinstance(col, str) or isinstance(col, unicode):
spatial_layer_item = u'{}.{}'.format(table, col)
elif isinstance(col, SocialTenure):
spatial_layer_item = col.view_name
elif col.layer_display_name == '':
spatial_layer_item = u'{0}'.format(col.entity.short_name)
# use the layer_display_name
else:
spatial_layer_item = col.layer_display_name
return spatial_layer_item
def on_add_to_canvas_button_clicked(self):
"""
Add STDM layer to map canvas.
"""
if self.stdm_layers_combo.count() == 0:
return
sp_col_info = self.stdm_layers_combo.itemData(
self.stdm_layers_combo.currentIndex()
)
if sp_col_info is None:
title = QApplication.translate(
'SpatialUnitManagerDockWidget',
'Spatial Unit Manager'
)
msg = QApplication.translate(
'SpatialUnitManagerDockWidget',
'Spatial Column Layer Could not be found'
)
# Message: Spatial column information
# could not be found
QMessageBox.warning(self.iface.mainWindow(), title, msg)
table_name, spatial_column = sp_col_info["table_name"], \
sp_col_info["column_name"]
# Check if the layer has already been
layer_item = sp_col_info.get('item', None)
layer_name = self.geom_col_layer_name(
table_name, layer_item
)
if layer_name in self._map_registry_layer_names():
layer = QgsMapLayerRegistry.instance().mapLayersByName(layer_name)[0]
self.iface.setActiveLayer(layer)
return
self.curr_lyr_table = table_name
self.curr_lyr_sp_col = spatial_column
if not layer_item is None:
if isinstance(layer_item, str) or isinstance(layer_item, unicode):
layer_name = layer_item
else:
layer_name = layer_item.layer_display()
entity = self._curr_profile.entity_by_name(table_name)
if entity is not None:
geom_col_obj = entity.columns[spatial_column]
srid = None
if geom_col_obj.srid >= 100000:
srid = geom_col_obj.srid
curr_layer = vector_layer(
table_name,
geom_column=spatial_column,
layer_name=layer_name,
proj_wkt=srid
)
else:
curr_layer = vector_layer(
table_name,
geom_column=spatial_column,
layer_name=layer_name,
proj_wkt=None
)
# for lookup layer.
else:
curr_layer = vector_layer(
table_name, geom_column=spatial_column
)
if curr_layer.isValid():
if curr_layer.name() in self._map_registry_layer_names():
return
QgsMapLayerRegistry.instance().addMapLayer(
curr_layer
)
self.zoom_to_layer()
self.onLayerAdded.emit(spatial_column, curr_layer)
self.toggle_entity_multi_layers(curr_layer)
self.set_canvas_crs(curr_layer)
# Required in order for the layer name to be set
if layer_name is not None:
QTimer.singleShot(
100,
lambda: self._set_layer_display_name(
curr_layer,
layer_name
)
)
entity = self._curr_profile.entity_by_name(self.curr_lyr_table)
fk_fields = self.join_fk_layer(curr_layer, entity)
if entity is not None:
self.sort_joined_columns(curr_layer, fk_fields)
self.set_field_alias(curr_layer, entity, fk_fields)
else:
msg = QApplication.translate(
"Spatial Unit Manager",
"'{0}.{1}' layer is invalid, it cannot "
"be added to the map view.".format(
table_name, spatial_column
)
)
QMessageBox.critical(
self.iface.mainWindow(),
'Spatial Unit Manager',
msg
)
def set_field_alias(self, layer, entity, fk_fields):
"""
Set the field alia for fk joined fields so that they are
same as the child columns.
:param layer: The layer containing the join
:type layer: QgsVectorLayer
:param entity: The entity of the layer
:type entity: Object
:param fk_fields: The dictionary containing the parent and child fields
:type fk_fields: OrderedDict
:return:
:rtype:
"""
for column, fk_field in fk_fields.iteritems():
header = entity.columns[column].header()
f_index = layer.fieldNameIndex(
u'{} {}'.format(header, fk_field)
)
alias = u'{} Value'.format(header)
layer.addAttributeAlias(f_index, alias)
def zoom_to_layer(self):
"""
Zooms the map canvas to the extent
the active layer.
:return:
:rtype:
"""
layer = self.iface.activeLayer()
if not layer is None:
self.iface.mapCanvas().setExtent(
layer.extent()
)
self.iface.mapCanvas().refresh()
def geom_columns(self, entity):
"""
Returns the geometry columns of an entity.
:param entity: The entity object.
:type entity: Object
:return: List of Geometry column objects
:rtype: List
"""
geom_column = [
column
for column in entity.columns.values()
if column.TYPE_INFO == 'GEOMETRY'
]
return geom_column
def same_entity_layers(self):
"""
Returns layer names of an entity if they are
more than one in one entity.
:return: List in a list
:rtype: List
"""
entity_layers = []
for entity in self.geom_entities:
layer_list = self.entity_layer_names(entity)
entity_layers.append(layer_list)
return entity_layers
def entity_layer_names(self, entity):
"""
Returns layer names of an entity if
they are more than one in one entity.
:param entity: The Entity object
:param type: Object
:return: List in a list
:rtype: List
"""
cols = self.geom_columns(entity)
layer_list = []
for col in cols:
lyr_name = self.geom_col_layer_name(
entity.name, col
)
layer_list.append(lyr_name)
return layer_list
def layer_entity_children(self, sel_lyr_name):
layer_lists = [
layer_list
for layer_list in self.same_entity_layers()
if sel_lyr_name in layer_list
]
str_view = self._curr_profile.social_tenure.view_name
if len(layer_lists) < 1:
geom_columns = table_column_names(
str_view, True
)
layer_lists = [geom_columns]
return layer_lists
def toggle_entity_multi_layers(self, new_layer):
"""
Removes other layers created from the entity
of the new layer.
:param new_layer: The new layer added
:type new_layer: QgsVectorLayer
:return: None
:rtype: NoneType
"""
sel_lyr_name = new_layer.name()
layer_lists = self.layer_entity_children(
sel_lyr_name
)
# Include layers for toggling whose entity
# has more than one geometry
if len(layer_lists) < 1:
return
# if the layer_list is the
# parent of selected layer
for layer_name in layer_lists[0]:
# remove other layers
# of the same entity
if layer_name != sel_lyr_name:
layer_objects = QgsMapLayerRegistry. \
instance().mapLayersByName(layer_name)
if len(layer_objects) > 0:
for layer in layer_objects:
layer_id = layer.id()
QgsMapLayerRegistry. \
instance().removeMapLayer(layer_id)
# Change the crs of the canvas based on the new layer
layer_list = QgsMapLayerRegistry.instance(). \
mapLayersByName(sel_lyr_name)
if len(layer_list) > 0:
self.set_canvas_crs(
layer_list[0]
)
def _set_layer_display_name(self, layer, name):
try:
layer.setName(name)
except RuntimeError:
pass
def _layer_table_column(self, layer):
# Returns the table and column name
# that a layer belongs to.
table, column = '', ''
if hasattr(layer, 'dataProvider'):
if layer.dataProvider().name() == 'postgres':
layerConnStr = layer.dataProvider().dataSourceUri()
dataSourceURI = QgsDataSourceURI(layerConnStr)
table, column = dataSourceURI.table(), \
dataSourceURI.geometryColumn()
return table, column
def _map_registry_layer_names(self):
"""
Returns a list of layers names.
"""
layers = QgsMapLayerRegistry.instance().mapLayers()
layer_names = [lyr.name() for lyr in layers.values()]
return layer_names
@pyqtSignature("")
def on_set_display_name_button_clicked(self):
"""
Method to change display name
"""
layer_names_ids = pg_layerNamesIDMapping().reverse
layer = self.iface.activeLayer()
if not layer is None:
table_name = layer_names_ids.get(layer.id(), '')
if table_name:
# Check if the table name is in the current profile
if table_name in self._profile_spatial_layers:
prompt = \
u"Set the display name for '{0}' layer".format(
layer.name()
)
display_name, ok = QInputDialog.getText(
self,
'Spatial Unit '
'Manager', prompt
)
if ok and display_name:
# Get layer table and columns names
table, column = self._layer_table_column(layer)
if table and column:
idx, layer_info = \
self._layer_info_from_table_column(
table,
column
)
# Get item in the combo corresponding to the layer
if idx != -1:
self.stdm_layers_combo.setItemText(
idx,
display_name
)
layer.setName(display_name)
# Update configuration item
config_item = layer_info.get('item', None)
if not config_item is None:
config_item.layer_display_name = \
display_name
# Update configuration
save_configuration()
else:
msg = QApplication.translate(
"Spatial Unit Manager",
u"The layer does not "
u"belong in the '{0}' "
u"profile.\nThe display name "
u"will not be set."
u"".format(
self._curr_profile.name
)
)
QMessageBox.critical(
self.iface.mainWindow(),
'Spatial Unit Manager',
msg
)
def active_layer_source(self):
"""
Get the layer table name if the source is from the database.
:return: The a Boolean True if a valid source is found or False if not.
Alternatively, None if there is no active layer.
:rtype: Boolean or NoneType
"""
active_layer = self.iface.activeLayer()
return self.layer_source(active_layer)
def layer_source(self, layer):
"""
Gets the layer source.
:param layer: The layer
:type layer: Any
:return: Layer Source or None
:rtype:
"""
if layer is None:
return None
source = layer.source()
if source is None:
return False
source_value = dict(re.findall('(\S+)="?(.*?)"? ', source))
try:
table = source_value['table'].split('.')
table_name = table[1].strip('"')
if table_name in pg_views():
return False
entity = self._curr_profile.entity_by_name(table_name)
if entity is None:
return False
else:
self.active_entity = entity
self.active_table = table_name
# get all spatial columns of the entity.
spatial_columns = [
c.name
for c in entity.columns.values()
if c.TYPE_INFO == 'GEOMETRY'
]
# get all fields excluding the geometry.
layer_fields = [
field.name()
for field in layer.pendingFields()
]
# get the currently being used geometry column
active_sp_cols = [
col
for col in spatial_columns
if col not in layer_fields
]
if len(active_sp_cols) == 1:
self.active_sp_col = active_sp_cols[0]
return True
except KeyError:
return False
@pyqtSignature("")
def on_import_gpx_file_button_clicked(self):
"""
Method to load GPS dialog
"""
source_status = self.active_layer_source()
layer_map = QgsMapLayerRegistry.instance().mapLayers()
error_title = QApplication.translate(
'SpatialUnitManagerDockWidget',
'GPS Feature Import Loading Error'
)
if len(layer_map) > 0:
if source_status is None:
QMessageBox.critical(
self,
error_title,
QApplication.translate(
'SpatialUnitManagerDockWidget',
'You have not selected a layer.\n '
'Please select a valid layer to import GPS features.'
)
)
elif source_status is False:
QMessageBox.critical(
self,
error_title,
QApplication.translate(
'SpatialUnitManagerDockWidget',
'You have selected a non-STDM entity layer.\n '
'Please select a valid layer to import GPS features.'
)
)
elif source_status is True:
self.gps_tool_dialog = GPSToolDialog(
self.iface,
self.active_entity,
self.active_table,
self.active_sp_col
)
self.gps_tool_dialog.show()
else:
QMessageBox.critical(
self,
error_title,
QApplication.translate(
'SpatialUnitManagerDockWidget',
'You must add an entity layer from Spatial Unit Manager\n'
'and select it to import GPS Features.'
)
)
def _valid_entity(self):
"""
Checks if the current active layer in the layer panel
represents a valid entity in the current profile
:return: Error object
:rtype: Object
"""
entity_profile = current_profile()
entity_obj = entity_profile.entity_by_name(self.curr_lyr_table)
if entity_obj is None:
return None
return entity_obj
def closeEvent(self, event):
"""
On close of the dock window, this event is executed
to run close_dock method
:param event: The close event
:type QCloseEvent
:return: None
"""
self._plugin.spatialLayerManager.setChecked(False)