class GtoWidgetProjectionSelection(QWidget):
def __init__(self, gtomain, parent=None):
super(GtoWidgetProjectionSelection, self).__init__(parent)
# QWidgetAction.__init__(self,parent)
self.iface = gtomain.iface
self.info = gtomain.info
try:
self.prj = QgsProject.instance()
# ui
lay = QHBoxLayout(self)
# -----
self.lblLayer = QLabel("Projektion:")
lay.addWidget(self.lblLayer)
self.wid = QgsProjectionSelectionWidget(self)
# help the QGIS widget:/
self.wid.setMinimumWidth(350)
self.wid.setSizePolicy(self.lblLayer.sizePolicy())
lay.addWidget(self.wid)
for tb in self.wid.findChildren(QToolButton):
tb.setIconSize(self.iface.iconSize())
# -----
self.setLayout(lay)
# signals
self.prj.crsChanged.connect(self.prj_crs_changed)
self.wid.crsChanged.connect(self.set_prj_crs)
# start
self.wid.setCrs(self.prj.crs())
except Exception as e:
self.info.err(e)
def prj_crs_changed(self):
try:
self.wid.setCrs(self.prj.crs())
except Exception as e:
self.info.err(e)
def set_prj_crs(self, crs):
try:
self.prj.setCrs(self.wid.crs())
except Exception as e:
self.info.err(e)
class CalculateGeometryDialog(QDialog):
def __init__(self, parent=None):
super().__init__(parent=parent)
scale_factor = QApplication.instance().primaryScreen() \
.logicalDotsPerInch() / 96
def create_editable_combobox(text):
combo = QComboBox()
combo.setEditable(True)
combo.setEditText(text)
return combo
cols = lambda cx, lx: \
(QCheckBox(cx), create_editable_combobox(lx),
FramedLabel(), PrecisionEdit())
self.rowXcoord = cols(self.tr('X Coordinate'), 'xcoord')
self.rowYcoord = cols(self.tr('Y Coordinate'), 'ycoord')
self.rowZcoord = cols(self.tr('Z Coordinate'), 'zcoord')
self.rowMvalue = cols(self.tr('M Value'), 'mvalue')
unit = QgsUnitTypes.DistanceDegrees
self.rowXcoord[2].setText(QgsUnitTypes.toString(unit).title())
self.rowYcoord[2].setText(QgsUnitTypes.toString(unit).title())
unit = QgsUnitTypes.DistanceMeters
self.rowZcoord[2].setText(QgsUnitTypes.toString(unit).title())
self.rowMvalue[2].setText(QgsUnitTypes.toString(unit).title())
cols = lambda cx, lx: \
(QCheckBox(cx), create_editable_combobox(lx),
QComboBox(), PrecisionEdit())
self.rowLength = cols(self.tr('Length'), 'length')
for unit in distance_units:
self.rowLength[2].addItem(QgsUnitTypes.toString(unit).title(), unit)
self.rowLength[2].setItemText(self.rowLength[2].count() - 1,
self.tr('Map Units'))
self.rowArea = cols(self.tr('Area'), 'area')
for unit in area_units:
self.rowArea[2].addItem(QgsUnitTypes.toString(unit).title(), unit)
self.rowArea[2].setItemText(self.rowArea[2].count() - 1,
self.tr('Map Units'))
self.rowPerimeter = cols(self.tr('Perimeter'), 'perimeter')
for i in range(self.rowLength[2].count()):
self.rowPerimeter[2].addItem(self.rowLength[2].itemText(i),
self.rowLength[2].itemData(i))
grid = QGridLayout()
grid.addWidget(QLabel(self.tr('Field')), 0, 1)
grid.addWidget(QLabel(self.tr('Units')), 0, 2)
label_prec = QLabel(self.tr('Precision'))
grid.addWidget(label_prec, 0, 3)
grid.itemAtPosition(0, 3).widget().show()
width = int(QFontMetrics(QFont()).height() * scale_factor * 3)
self.rows = (self.rowXcoord,
self.rowYcoord,
self.rowZcoord,
self.rowMvalue,
self.rowLength,
self.rowArea,
self.rowPerimeter,)
for row, w in enumerate(self.rows):
w[0].setChecked(True)
w[1].setMinimumWidth(width * 2)
w[3].setMaximumWidth(max(width, label_prec.width()))
for col in range(len(w)):
grid.addWidget(w[col], row + 1, col)
for col in (1, 2):
grid.setColumnStretch(col, 1)
groupProp = QGroupBox(self.tr('Properties'))
groupProp.setLayout(grid)
self.radio1 = QRadioButton(
self.tr('Cartesian calculation with following CRS'))
self.radio1.setChecked(True)
self.radio2 = QRadioButton(
self.tr('Ellipsoidal calculation with following ellipsoid'))
self.radios = QButtonGroup()
self.radios.addButton(self.radio1)
self.radios.addButton(self.radio2)
self.selectorCrs = QgsProjectionSelectionWidget()
self.selectorCrs.setMinimumWidth(width * 8)
self.selectorCrs.setOptionVisible(
QgsProjectionSelectionWidget.CurrentCrs, False)
self.selectorCrs.setLayerCrs(QgsCoordinateReferenceSystem('EPSG:4326'))
self.comboCrs = self.selectorCrs.layout().itemAt(0).widget()
self.comboCrs.setCurrentIndex(
self.comboCrs.findData(QgsProjectionSelectionWidget.LayerCrs))
self.labelEllips = FramedLabel()
grid = QGridLayout()
grid.addWidget(self.radio1, 0, 0, 1, 0)
grid.addWidget(self.selectorCrs, 1, 1)
grid.addWidget(self.radio2, 2, 0, 1, 0)
grid.addWidget(self.labelEllips, 3, 1)
grid.setColumnMinimumWidth(0, QRadioButton().sizeHint().width())
grid.setRowMinimumHeight(3, QLineEdit().sizeHint().height())
groupSystem = QGroupBox(self.tr('Calculation System'))
groupSystem.setLayout(grid)
self.checkSelected = QCheckBox(self.tr('Selected features only'))
self.checkDefault = QCheckBox(self.tr('Set expression to default value'))
self.checkVirtual = QCheckBox(self.tr('Use virtual field for new field'))
self.checks = QButtonGroup()
self.checks.setExclusive(False)
self.checks.addButton(self.checkSelected)
self.checks.addButton(self.checkDefault)
self.checks.addButton(self.checkVirtual)
form = QFormLayout()
form.addRow(groupProp)
form.addRow(groupSystem)
form.addRow(self.checkSelected)
form.addRow(self.checkDefault)
form.addRow(self.checkVirtual)
self.buttonBox = QDialogButtonBox(
QDialogButtonBox.Ok | QDialogButtonBox.Cancel,
accepted=self.accept, rejected=self.reject)
vbox = QVBoxLayout()
vbox.addLayout(form)
vbox.addWidget(self.buttonBox)
self.setLayout(vbox)
self.setMaximumSize(QWIDGETSIZE_MAX, 0)
def prepare_rows(self, rows):
for row in self.rows:
for col in range(len(row)):
row[col].hide()
for row in rows:
for col in range(len(row)):
row[col].show()
def prepare_for_point(self, hasZ=True, hasM=True):
rows = [self.rowXcoord, self.rowYcoord]
if hasZ:
rows += [self.rowZcoord]
if hasM:
rows += [self.rowMvalue]
self.prepare_rows(rows)
def prepare_for_line(self):
self.prepare_rows([self.rowLength])
def prepare_for_polygon(self):
self.prepare_rows([self.rowArea, self.rowPerimeter])
