class PediaLayerDialogTest(unittest.TestCase):
"""Test dialog works."""
def setUp(self):
"""Runs before each test."""
self.dialog = PediaLayerDialog(None)
def tearDown(self):
"""Runs after each test."""
self.dialog = None
def test_dialog_ok(self):
"""Test we can click OK."""
button = self.dialog.button_box.button(QDialogButtonBox.Ok)
button.click()
result = self.dialog.result()
self.assertEqual(result, QDialog.Accepted)
def test_dialog_cancel(self):
"""Test we can click cancel."""
button = self.dialog.button_box.button(QDialogButtonBox.Cancel)
button.click()
result = self.dialog.result()
self.assertEqual(result, QDialog.Rejected)
def __init__(self, iface):
"""Constructor.
:param iface: An interface instance that will be passed to this class
which provides the hook by which you can manipulate the QGIS
application at run time.
:type iface: QgsInterface
"""
# Save reference to the QGIS interface
self.iface = iface
# initialize plugin directory
self.plugin_dir = os.path.dirname(__file__)
# initialize locale
locale = QSettings().value('locale/userLocale')[0:2]
locale_path = os.path.join(self.plugin_dir, 'i18n',
'PediaLayer_{}.qm'.format(locale))
if os.path.exists(locale_path):
self.translator = QTranslator()
self.translator.load(locale_path)
if qVersion() > '4.3.3':
QCoreApplication.installTranslator(self.translator)
# Create the dialog (after translation) and keep reference
self.dlg = PediaLayerDialog()
# Declare instance attributes
self.actions = []
self.menu = self.tr(u'&Pedia Layer')
# TODO: We are going to let the user set this up in a future iteration
self.toolbar = self.iface.addToolBar(u'PediaLayer')
self.toolbar.setObjectName(u'PediaLayer')
def __init__(self, iface):
"""Constructor.
:param iface: An interface instance that will be passed to this class
which provides the hook by which you can manipulate the QGIS
application at run time.
:type iface: QgsInterface
"""
# Save reference to the QGIS interface
self.iface = iface
# initialize plugin directory
self.plugin_dir = os.path.dirname(__file__)
# initialize locale
locale = QSettings().value('locale/userLocale')[0:2]
locale_path = os.path.join(
self.plugin_dir,
'i18n',
'PediaLayer_{}.qm'.format(locale))
if os.path.exists(locale_path):
self.translator = QTranslator()
self.translator.load(locale_path)
if qVersion() > '4.3.3':
QCoreApplication.installTranslator(self.translator)
# Create the dialog (after translation) and keep reference
self.dlg = PediaLayerDialog()
# Declare instance attributes
self.actions = []
self.menu = self.tr(u'&Pedia Layer')
# TODO: We are going to let the user set this up in a future iteration
self.toolbar = self.iface.addToolBar(u'PediaLayer')
self.toolbar.setObjectName(u'PediaLayer')
def setUp(self):
"""Runs before each test."""
self.dialog = PediaLayerDialog(None)
class PediaLayer:
"""QGIS Plugin Implementation."""
def __init__(self, iface):
"""Constructor.
:param iface: An interface instance that will be passed to this class
which provides the hook by which you can manipulate the QGIS
application at run time.
:type iface: QgsInterface
"""
# Save reference to the QGIS interface
self.iface = iface
# initialize plugin directory
self.plugin_dir = os.path.dirname(__file__)
# initialize locale
locale = QSettings().value('locale/userLocale')[0:2]
locale_path = os.path.join(
self.plugin_dir,
'i18n',
'PediaLayer_{}.qm'.format(locale))
if os.path.exists(locale_path):
self.translator = QTranslator()
self.translator.load(locale_path)
if qVersion() > '4.3.3':
QCoreApplication.installTranslator(self.translator)
# Create the dialog (after translation) and keep reference
self.dlg = PediaLayerDialog()
# Declare instance attributes
self.actions = []
self.menu = self.tr(u'&Pedia Layer')
# TODO: We are going to let the user set this up in a future iteration
self.toolbar = self.iface.addToolBar(u'PediaLayer')
self.toolbar.setObjectName(u'PediaLayer')
# noinspection PyMethodMayBeStatic
def tr(self, message):
"""Get the translation for a string using Qt translation API.
We implement this ourselves since we do not inherit QObject.
:param message: String for translation.
:type message: str, QString
:returns: Translated version of message.
:rtype: QString
"""
# noinspection PyTypeChecker,PyArgumentList,PyCallByClass
return QCoreApplication.translate('PediaLayer', message)
def add_action(
self,
icon_path,
text,
callback,
enabled_flag=True,
add_to_menu=True,
add_to_toolbar=True,
status_tip=None,
whats_this=None,
parent=None):
"""Add a toolbar icon to the toolbar.
:param icon_path: Path to the icon for this action. Can be a resource
path (e.g. ':/plugins/foo/bar.png') or a normal file system path.
:type icon_path: str
:param text: Text that should be shown in menu items for this action.
:type text: str
:param callback: Function to be called when the action is triggered.
:type callback: function
:param enabled_flag: A flag indicating if the action should be enabled
by default. Defaults to True.
:type enabled_flag: bool
:param add_to_menu: Flag indicating whether the action should also
be added to the menu. Defaults to True.
:type add_to_menu: bool
:param add_to_toolbar: Flag indicating whether the action should also
be added to the toolbar. Defaults to True.
:type add_to_toolbar: bool
:param status_tip: Optional text to show in a popup when mouse pointer
hovers over the action.
:type status_tip: str
:param parent: Parent widget for the new action. Defaults None.
:type parent: QWidget
:param whats_this: Optional text to show in the status bar when the
mouse pointer hovers over the action.
:returns: The action that was created. Note that the action is also
added to self.actions list.
:rtype: QAction
"""
icon = QIcon(icon_path)
action = QAction(icon, text, parent)
action.triggered.connect(callback)
action.setEnabled(enabled_flag)
if status_tip is not None:
action.setStatusTip(status_tip)
if whats_this is not None:
action.setWhatsThis(whats_this)
if add_to_toolbar:
self.toolbar.addAction(action)
if add_to_menu:
self.iface.addPluginToWebMenu(
self.menu,
action)
self.actions.append(action)
return action
def initGui(self):
"""Create the menu entries and toolbar icons inside the QGIS GUI."""
icon_path = ':/plugins/PediaLayer/icon.png'
self.add_action(
icon_path,
text=self.tr(u'Create a layer from DBpedia'),
callback=self.run,
parent=self.iface.mainWindow())
def unload(self):
"""Removes the plugin menu item and icon from QGIS GUI."""
for action in self.actions:
self.iface.removePluginWebMenu(
self.tr(u'&Pedia Layer'),
action)
self.iface.removeToolBarIcon(action)
# remove the toolbar
del self.toolbar
def run(self):
"""Run method that performs all the real work"""
# PREPARE COMBO BOX
self.dlg.comboBox.clear()
layers = self.iface.legendInterface().layers()
layer_list = []
for layer in layers:
if isinstance(layer, QgsVectorLayer) or \
isinstance(layer, QgsRasterLayer):
layer_list.append(layer.name())
self.dlg.comboBox.addItems(layer_list)
# show the dialog
self.dlg.show()
# Run the dialog event loop
result = self.dlg.exec_()
# See if OK was pressed
if result:
# ADD LAYER FROM DBPEDIA
# calculate coordinates
if self.dlg.radioButton_l.isChecked() == True:
index = self.dlg.comboBox.currentIndex()
if index == -1:
return
layer = layers[index]
extent = layer.extent()
srcCrs = layer.crs()
elif self.dlg.radioButton_m.isChecked() == True:
canvas = self.iface.mapCanvas()
layers = self.iface.legendInterface().layers()
if len(layers) == 0:
return
extent = canvas.extent()
srcCrs = canvas.mapSettings().destinationCrs()
else:
return
destCrs = QgsCoordinateReferenceSystem(4326, QgsCoordinateReferenceSystem.EpsgCrsId)
transform = QgsCoordinateTransform(srcCrs, destCrs)
wgsExtent = transform.transform(extent)
xMax = wgsExtent.xMaximum()
xMin = wgsExtent.xMinimum()
yMax = wgsExtent.yMaximum()
yMin = wgsExtent.yMinimum()
# prepare query
sparql = "SELECT distinct ?name ?abstract ?lat ?lon ?url\n" \
+ "WHERE {\n" \
+ "?s rdfs:label ?name ;\n" \
+ "dbpedia-owl:abstract ?abstract ;\n" \
+ "foaf:isPrimaryTopicOf ?url ;\n" \
+ "geo:lat ?lat ;\n" \
+ "geo:long ?lon .\n" \
+ "FILTER ( " \
+ "?lon > \"" + str(xMin) + "\"^^xsd:float && ?lon < \"" + str(xMax) + "\"^^xsd:float && " \
+ "?lat > \"" + str(yMin) + "\"^^xsd:float && ?lat < \"" + str(yMax) + "\"^^xsd:float)\n" \
+ "FILTER (LANG(?name)='ja' && LANG(?abstract)='ja')" \
+ "\n} LIMIT " + str(self.dlg.spinBox.value())
server = "http://ja.dbpedia.org/sparql"
param = { "query" : sparql , "format" : "application/sparql-results+json" }
# exec query
request = urllib2.Request(server, urllib.urlencode(param))
response = urllib2.urlopen(request)
data = json.loads(response.read())
list = data["results"]["bindings"]
# add layer
newLayer = QgsVectorLayer("Point?crs=epsg:4326", "pedialayer", "memory")
newLayer.setProviderEncoding("UTF-8")
QgsMapLayerRegistry.instance().addMapLayer(newLayer)
newLayer.startEditing()
newLayer.addAttribute(QgsField("name", QVariant.String))
newLayer.addAttribute(QgsField("url", QVariant.String))
newLayer.addAttribute(QgsField("abstract", QVariant.String))
# label setting
newLayer.setCustomProperty("labeling", "pal")
newLayer.setCustomProperty("labeling/enabled", "true")
newLayer.setCustomProperty("labeling/fieldName", "name")
newLayer.setCustomProperty("labeling/fontSize", "10")
# add features
for item in list:
feature = QgsFeature(newLayer.pendingFields())
feature.setGeometry(QgsGeometry.fromPoint(QgsPoint(float(item["lon"]["value"]), float(item["lat"]["value"]))))
feature.setAttribute("name", unicode(item["name"]["value"]))
feature.setAttribute("url", unicode(item["url"]["value"]))
feature.setAttribute("abstract", unicode(item["abstract"]["value"]))
newLayer.addFeature(feature)
newLayer.commitChanges()
newLayer.updateExtents()
class PediaLayer:
"""QGIS Plugin Implementation."""
def __init__(self, iface):
"""Constructor.
:param iface: An interface instance that will be passed to this class
which provides the hook by which you can manipulate the QGIS
application at run time.
:type iface: QgsInterface
"""
# Save reference to the QGIS interface
self.iface = iface
# initialize plugin directory
self.plugin_dir = os.path.dirname(__file__)
# initialize locale
locale = QSettings().value('locale/userLocale')[0:2]
locale_path = os.path.join(self.plugin_dir, 'i18n',
'PediaLayer_{}.qm'.format(locale))
if os.path.exists(locale_path):
self.translator = QTranslator()
self.translator.load(locale_path)
if qVersion() > '4.3.3':
QCoreApplication.installTranslator(self.translator)
# Create the dialog (after translation) and keep reference
self.dlg = PediaLayerDialog()
# Declare instance attributes
self.actions = []
self.menu = self.tr(u'&Pedia Layer')
# TODO: We are going to let the user set this up in a future iteration
self.toolbar = self.iface.addToolBar(u'PediaLayer')
self.toolbar.setObjectName(u'PediaLayer')
# noinspection PyMethodMayBeStatic
def tr(self, message):
"""Get the translation for a string using Qt translation API.
We implement this ourselves since we do not inherit QObject.
:param message: String for translation.
:type message: str, QString
:returns: Translated version of message.
:rtype: QString
"""
# noinspection PyTypeChecker,PyArgumentList,PyCallByClass
return QCoreApplication.translate('PediaLayer', message)
def add_action(self,
icon_path,
text,
callback,
enabled_flag=True,
add_to_menu=True,
add_to_toolbar=True,
status_tip=None,
whats_this=None,
parent=None):
"""Add a toolbar icon to the toolbar.
:param icon_path: Path to the icon for this action. Can be a resource
path (e.g. ':/plugins/foo/bar.png') or a normal file system path.
:type icon_path: str
:param text: Text that should be shown in menu items for this action.
:type text: str
:param callback: Function to be called when the action is triggered.
:type callback: function
:param enabled_flag: A flag indicating if the action should be enabled
by default. Defaults to True.
:type enabled_flag: bool
:param add_to_menu: Flag indicating whether the action should also
be added to the menu. Defaults to True.
:type add_to_menu: bool
:param add_to_toolbar: Flag indicating whether the action should also
be added to the toolbar. Defaults to True.
:type add_to_toolbar: bool
:param status_tip: Optional text to show in a popup when mouse pointer
hovers over the action.
:type status_tip: str
:param parent: Parent widget for the new action. Defaults None.
:type parent: QWidget
:param whats_this: Optional text to show in the status bar when the
mouse pointer hovers over the action.
:returns: The action that was created. Note that the action is also
added to self.actions list.
:rtype: QAction
"""
icon = QIcon(icon_path)
action = QAction(icon, text, parent)
action.triggered.connect(callback)
action.setEnabled(enabled_flag)
if status_tip is not None:
action.setStatusTip(status_tip)
if whats_this is not None:
action.setWhatsThis(whats_this)
if add_to_toolbar:
self.toolbar.addAction(action)
if add_to_menu:
self.iface.addPluginToWebMenu(self.menu, action)
self.actions.append(action)
return action
def initGui(self):
"""Create the menu entries and toolbar icons inside the QGIS GUI."""
icon_path = ':/plugins/PediaLayer/icon.png'
self.add_action(icon_path,
text=self.tr(u'Create a layer from DBpedia'),
callback=self.run,
parent=self.iface.mainWindow())
def unload(self):
"""Removes the plugin menu item and icon from QGIS GUI."""
for action in self.actions:
self.iface.removePluginWebMenu(self.tr(u'&Pedia Layer'), action)
self.iface.removeToolBarIcon(action)
# remove the toolbar
del self.toolbar
def run(self):
"""Run method that performs all the real work"""
# PREPARE COMBO BOX
self.dlg.comboBox.clear()
layers = self.iface.legendInterface().layers()
layer_list = []
for layer in layers:
if isinstance(layer, QgsVectorLayer) or \
isinstance(layer, QgsRasterLayer):
layer_list.append(layer.name())
self.dlg.comboBox.addItems(layer_list)
# show the dialog
self.dlg.show()
# Run the dialog event loop
result = self.dlg.exec_()
# See if OK was pressed
if result:
# ADD LAYER FROM DBPEDIA
# calculate coordinates
if self.dlg.radioButton_l.isChecked() == True:
index = self.dlg.comboBox.currentIndex()
if index == -1:
return
layer = layers[index]
extent = layer.extent()
srcCrs = layer.crs()
elif self.dlg.radioButton_m.isChecked() == True:
canvas = self.iface.mapCanvas()
layers = self.iface.legendInterface().layers()
if len(layers) == 0:
return
extent = canvas.extent()
srcCrs = canvas.mapSettings().destinationCrs()
else:
return
destCrs = QgsCoordinateReferenceSystem(
4326, QgsCoordinateReferenceSystem.EpsgCrsId)
transform = QgsCoordinateTransform(srcCrs, destCrs)
wgsExtent = transform.transform(extent)
xMax = wgsExtent.xMaximum()
xMin = wgsExtent.xMinimum()
yMax = wgsExtent.yMaximum()
yMin = wgsExtent.yMinimum()
# prepare query
sparql = "SELECT distinct ?name ?abstract ?lat ?lon ?url\n" \
+ "WHERE {\n" \
+ "?s rdfs:label ?name ;\n" \
+ "dbpedia-owl:abstract ?abstract ;\n" \
+ "foaf:isPrimaryTopicOf ?url ;\n" \
+ "geo:lat ?lat ;\n" \
+ "geo:long ?lon .\n" \
+ "FILTER ( " \
+ "?lon > \"" + str(xMin) + "\"^^xsd:float && ?lon < \"" + str(xMax) + "\"^^xsd:float && " \
+ "?lat > \"" + str(yMin) + "\"^^xsd:float && ?lat < \"" + str(yMax) + "\"^^xsd:float)\n" \
+ "FILTER (LANG(?name)='ja' && LANG(?abstract)='ja')" \
+ "\n} LIMIT " + str(self.dlg.spinBox.value())
server = "http://ja.dbpedia.org/sparql"
param = {
"query": sparql,
"format": "application/sparql-results+json"
}
# exec query
request = urllib2.Request(server, urllib.urlencode(param))
response = urllib2.urlopen(request)
data = json.loads(response.read())
list = data["results"]["bindings"]
# add layer
newLayer = QgsVectorLayer("Point?crs=epsg:4326", "pedialayer",
"memory")
newLayer.setProviderEncoding("UTF-8")
QgsMapLayerRegistry.instance().addMapLayer(newLayer)
newLayer.startEditing()
newLayer.addAttribute(QgsField("name", QVariant.String))
newLayer.addAttribute(QgsField("url", QVariant.String))
newLayer.addAttribute(QgsField("abstract", QVariant.String))
# label setting
newLayer.setCustomProperty("labeling", "pal")
newLayer.setCustomProperty("labeling/enabled", "true")
newLayer.setCustomProperty("labeling/fieldName", "name")
newLayer.setCustomProperty("labeling/fontSize", "10")
# add features
for item in list:
feature = QgsFeature(newLayer.pendingFields())
feature.setGeometry(
QgsGeometry.fromPoint(
QgsPoint(float(item["lon"]["value"]),
float(item["lat"]["value"]))))
feature.setAttribute("name", unicode(item["name"]["value"]))
feature.setAttribute("url", unicode(item["url"]["value"]))
feature.setAttribute("abstract",
unicode(item["abstract"]["value"]))
newLayer.addFeature(feature)
newLayer.commitChanges()
newLayer.updateExtents()
