class GeometryExporterDialogTest(unittest.TestCase):
"""Test dialog works."""
def setUp(self):
"""Runs before each test."""
self.dialog = GeometryExporterDialog(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',
'GeometryExporter_{}.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 = GeometryExporterDialog()
# Declare instance attributes
self.actions = []
self.menu = self.tr(u'&Geometry Exporter')
# TODO: We are going to let the user set this up in a future iteration
self.toolbar = self.iface.addToolBar(u'GeometryExporter')
self.toolbar.setObjectName(u'GeometryExporter')
class GeometryExporterDialogTest(unittest.TestCase):
"""Test dialog works."""
def setUp(self):
"""Runs before each test."""
self.dialog = GeometryExporterDialog(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 setUp(self):
"""Runs before each test."""
self.dialog = GeometryExporterDialog(None)
class GeometryExporter:
"""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',
'GeometryExporter_{}.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 = GeometryExporterDialog()
# Declare instance attributes
self.actions = []
self.menu = self.tr(u'&Geometry Exporter')
# TODO: We are going to let the user set this up in a future iteration
self.toolbar = self.iface.addToolBar(u'GeometryExporter')
self.toolbar.setObjectName(u'GeometryExporter')
# 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('GeometryExporter', 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.addPluginToVectorMenu(
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/GeometryExporter/icons/icon.png'
self.add_action(
icon_path,
text=self.tr(u'Geometry Exporter'),
callback=self.run,
parent=self.iface.mainWindow())
self.add_action(
None,
text='About',
callback=self.about,
add_to_toolbar=None,
parent=None)
QObject.connect(self.dlg.cmbFormat, SIGNAL("currentIndexChanged(int)"), self.populate)
QObject.connect(self.dlg.cmbConversion, SIGNAL("currentIndexChanged(int)"), self.populate)
QObject.connect(self.dlg.proj, SIGNAL("crsChanged(QgsCoordinateReferenceSystem)"), self.populate)
QObject.connect(self.dlg.btnCopy, SIGNAL("clicked()"), self.copytoclipboard)
def unload(self):
"""Removes the plugin menu item and icon from QGIS GUI."""
for action in self.actions:
self.iface.removePluginVectorMenu(
self.tr(u'&Geometry Exporter'),
action)
self.iface.removeToolBarIcon(action)
# remove the toolbar
del self.toolbar
def about(self):
infoString = "<table><tr><td colspan=\"2\"><b>Geometry Exporter 0.5.1 - beta</b></td></tr><tr><td colspan=\"2\"></td></tr><tr><td>Author:</td><td>Jürgen Weichand</td></tr><tr><td>Mail:</td><td><a href=\"mailto:[email protected]\">[email protected]</a></td></tr><tr><td>Website:</td><td><a href=\"http://www.weichand.de\">http://www.weichand.de</a></td></tr></table>"
QMessageBox.information(self.iface.mainWindow(), "About Geometry Exporter", infoString)
def run(self):
layer = self.iface.activeLayer()
# layer must be activated
if not layer:
QMessageBox.critical(self.dlg, 'Error', u'Please select layer!')
return
# >= 1 feature must be selected
if len(layer.selectedFeatures()) != 1:
QMessageBox.critical(self.dlg, 'Error', u'Please select exactly one feature!')
return
else:
self.dlg.show()
self.feature = layer.selectedFeatures()[0]
self.qgscrs = layer.crs()
self.populate()
# http://gis.stackexchange.com/questions/90205/equivalent-function-to-shapelys-envelope-in-ogr
def compute_envelope(self, geom):
(minX, maxX, minY, maxY) = geom.GetEnvelope()
# Create ring
ring = ogr.Geometry(ogr.wkbLinearRing)
ring.AddPoint_2D(minX, minY)
ring.AddPoint_2D(maxX, minY)
ring.AddPoint_2D(maxX, maxY)
ring.AddPoint_2D(minX, maxY)
ring.AddPoint_2D(minX, minY)
# Create polygon
poly_envelope = ogr.Geometry(ogr.wkbPolygon)
poly_envelope.AddGeometry(ring)
return poly_envelope
def copytoclipboard(self):
QApplication.clipboard().setText(
self.dlg.txtGeometryExport.toPlainText()
)
def populate(self):
if self.feature:
qgsgeom = self.feature.geometry()
qgscrs = self.dlg.proj.crs()
wkt = qgsgeom.exportToWkt()
geom = ogr.CreateGeometryFromWkt(wkt)
# transformation
if qgscrs.postgisSrid() > 0:
# Transformation using OGR
# https://pcjericks.github.io/py-gdalogr-cookbook/projection.html#reproject-a-geometry
source = osr.SpatialReference()
source.ImportFromEPSG(self.qgscrs.postgisSrid())
target = osr.SpatialReference()
target.ImportFromEPSG(qgscrs.postgisSrid())
transform = osr.CoordinateTransformation(source, target)
geom.Transform(transform)
# conversion
if self.dlg.cmbConversion.currentText() == 'Envelope':
geom = self.compute_envelope(geom)
if self.dlg.cmbConversion.currentText() == 'Centroid':
geom = geom.Centroid()
if self.dlg.cmbConversion.currentText() == 'Boundary':
geom = geom.GetBoundary()
if self.dlg.cmbConversion.currentText() == 'ConvexHull':
geom = geom.ConvexHull()
export = ''
if self.dlg.cmbFormat.currentText() == 'GML 2':
export = geom.ExportToGML(options=['FORMAT=GML2'])
elif self.dlg.cmbFormat.currentText() == 'GML 3':
export = geom.ExportToGML(options=['FORMAT=GML3'])
elif self.dlg.cmbFormat.currentText() == 'KML':
export = geom.ExportToKML()
elif self.dlg.cmbFormat.currentText() == 'GeoJSON':
export = geom.ExportToJson()
elif self.dlg.cmbFormat.currentText() == 'EWKT':
export = ''
if qgscrs.postgisSrid() > 0:
export += "EPSG:"
export += str(qgscrs.postgisSrid()) + ";"
export += geom.ExportToWkt()
elif self.dlg.cmbFormat.currentText() == 'CSV':
coordinates = json.loads(geom.ExportToJson())
number = 0
for l in coordinates['coordinates'][0]:
number += 1
export += str(number) + ',' + json.dumps(l[0]) + ',' + json.dumps(l[1]) + '\r\n'
else:
export = geom.ExportToWkt()
self.dlg.txtGeometryExport.setText(export)
def setUp(self):
"""Runs before each test."""
self.dialog = GeometryExporterDialog(None)
