Source code for tuiview.vectoropendialog
"""
Module that contains the VectorOpenDialog class
"""
# This file is part of 'TuiView' - a simple Raster viewer
# Copyright (C) 2012 Sam Gillingham
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
from PyQt5.QtWidgets import QDialog, QVBoxLayout, QHBoxLayout, QRadioButton
from PyQt5.QtWidgets import QButtonGroup, QComboBox, QTextEdit, QPushButton
from PyQt5.QtGui import QFontMetrics
NUM_SQL_ROWS = 4
[docs]class VectorOpenDialog(QDialog):
def __init__(self, parent, layerList):
QDialog.__init__(self, parent)
self.setWindowTitle('Open Vector Layer')
self.layerList = layerList
self.layerTypeButtonGroup = QButtonGroup() # enforces exclusivity
self.layerNameRadio = QRadioButton("Layer Name")
self.layerSQLRadio = QRadioButton("SQL")
self.layerTypeButtonGroup.addButton(self.layerNameRadio)
self.layerTypeButtonGroup.addButton(self.layerSQLRadio)
self.layerNameRadio.setChecked(True) # the default
self.mainLayout = QVBoxLayout()
self.nameLayout = QHBoxLayout()
self.nameLayout.addWidget(self.layerNameRadio)
self.nameCombo = QComboBox()
for layerName in layerList:
self.nameCombo.addItem(layerName)
self.nameLayout.addWidget(self.nameCombo)
self.mainLayout.addLayout(self.nameLayout)
self.sqlLayout = QHBoxLayout()
self.sqlLayout.addWidget(self.layerSQLRadio)
self.sqlText = QTextEdit()
self.sqlText.setReadOnly(True)
fm = QFontMetrics(self.sqlText.font())
self.sqlText.setFixedHeight(NUM_SQL_ROWS * fm.lineSpacing())
self.layerNameRadio.toggled.connect(self.typeToggled)
self.sqlLayout.addWidget(self.sqlText)
self.mainLayout.addLayout(self.sqlLayout)
# ok and cancel buttons
self.okButton = QPushButton(self)
self.okButton.setText("OK")
self.okButton.setDefault(True)
self.okButton.clicked.connect(self.accept)
self.cancelButton = QPushButton(self)
self.cancelButton.setText("Cancel")
self.cancelButton.clicked.connect(self.reject)
self.buttonLayout = QHBoxLayout()
self.buttonLayout.addWidget(self.okButton)
self.buttonLayout.addWidget(self.cancelButton)
self.mainLayout.addLayout(self.buttonLayout)
self.setLayout(self.mainLayout)
[docs] def typeToggled(self, checked):
"signal handler for change of state"
self.sqlText.setReadOnly(checked)
[docs] def isNamedLayer(self):
"Return if the user has selected a named layer rather than SQL"
return self.layerNameRadio.isChecked()
[docs] def getSelectedLayer(self):
"Get the name of the selected layer"
return self.nameCombo.currentText()
[docs] def getSQL(self):
"return the SQL text entered"
return self.sqlText.toPlainText()