#!/usr/bin/python3
# -*- coding: utf-8 -*-
'''Pychemqt, Chemical Engineering Process simulator
Copyright (C) 2009-2025, Juan José Gómez Romera <jjgomera@gmail.com>
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 3 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, see <http://www.gnu.org/licenses/>.
.. include:: UI_unitConverter.rst
The module include a unit converter graphical application
* :class:`UI_conversorUnidades`: Dialog to show all values of a magnitud \
in every supported unit
* :class:`moneda`: Customized unit converter for currency values
* :class:`UI_unitConverter`: Dialog to choose between the availables unit
'''
import logging
import os
from tools.qt import QtCore, QtGui, QtWidgets
from lib.unidades import Currency, getrates, _all
from lib.config import conf_dir
from UI.delegate import CellEditor
[docs]
class UI_conversorUnidades(QtWidgets.QDialog):
"""Dialog to show all values of a magnitud in every supported unit"""
[docs]
def __init__(self, unidad, valor=None, parent=None):
"""
unidad: unidades class
valor: optional value to show
"""
super().__init__(parent)
self.setWindowTitle(unidad.__title__)
self.mutex = QtCore.QMutex()
self.unidad = unidad
if unidad.__tooltip__:
self.tooltip = unidad.__tooltip__
else:
self.tooltip = unidad.__text__
self.value = self.unidad(valor)
lyt = QtWidgets.QGridLayout(self)
self.tabla = QtWidgets.QTableWidget()
self.tabla.setRowCount(len(unidad.__text__))
self.tabla.setColumnCount(1)
self.tabla.setItemDelegateForColumn(0, CellEditor(self))
self.tabla.horizontalHeader().setVisible(False)
self.tabla.horizontalHeader().setStretchLastSection(True)
self.tabla.setMaximumHeight(len(unidad.__text__)*24+4)
for i, txt in enumerate(unidad.__text__):
item = QtWidgets.QTableWidgetItem(txt)
self.tabla.setVerticalHeaderItem(i, item)
self.tabla.setRowHeight(i, 24)
self.tabla.setItem(i, 0, QtWidgets.QTableWidgetItem(""))
self.tabla.item(i, 0).setTextAlignment(
QtCore.Qt.AlignmentFlag.AlignRight
| QtCore.Qt.AlignmentFlag.AlignVCenter)
for i, tip in enumerate(self.tooltip):
self.tabla.item(i, 0).setToolTip(tip)
self.tabla.cellChanged.connect(self.update)
lyt.addWidget(self.tabla, 2, 1)
self.buttonBox = QtWidgets.QDialogButtonBox(
QtWidgets.QDialogButtonBox.StandardButton.Cancel
| QtWidgets.QDialogButtonBox.StandardButton.Ok)
self.buttonBox.setCenterButtons(True)
self.buttonBox.accepted.connect(self.accept)
self.buttonBox.rejected.connect(self.reject)
lyt.addWidget(self.buttonBox, 3, 0, 1, 3)
if valor:
self.fill(self.value)
[docs]
def fill(self, valor):
"""Fill tables header with units titles"""
for i, key in enumerate(self.unidad.__units__):
self.tabla.item(i, 0).setText(valor.format(key))
[docs]
def update(self, fila, columna):
"""Update tables with values"""
if self.mutex.tryLock():
new = self.tabla.item(fila, columna).text()
self.value = self.unidad(float(new), self.unidad.__units__[fila])
self.fill(self.value)
self.mutex.unlock()
[docs]
class moneda(UI_conversorUnidades):
"""Customized unit converter for currency values
- Add date and exchange update button at top
- Add country flags to easy recognize
"""
[docs]
def __init__(self, valor=None, parent=None):
super().__init__(Currency, valor=valor, parent=parent)
self.__TEXTSTATUS__ = self.tr("Launched currency converter aplication")
self.fecha = QtWidgets.QLabel(self.tr("Date") + ": " + self.value.date)
self.layout().addWidget(self.fecha, 0, 1)
self.botonActualizar = QtWidgets.QPushButton(self.tr("Update"))
self.botonActualizar.clicked.connect(self.getrates)
self.layout().addWidget(self.botonActualizar, 1, 1)
for i, unit in enumerate(Currency.__units__):
header = self.tabla.verticalHeaderItem(i)
header.setIcon(QtGui.QIcon(QtGui.QPixmap(os.path.join(
os.environ["pychemqt"], "images", "flag", f"{unit}.png"))))
# Set backgroundcolor to better look or rare currencies
# Use olimpic continent color code
main = len(Currency._uMain)
Europe = main + len(Currency._uEurope)
America = Europe + len(Currency._uAmerica)
Africa = America + len(Currency._uAfrica)
Asia = Africa + len(Currency._uAsia)
Oceania = Asia + len(Currency._uOceania)
if i < main:
color = "#FFFFFF"
elif i < Europe:
color = "#FF5555"
elif i < America:
color = "#55FF55"
elif i < Africa:
color = "#888888"
elif i < Asia:
color = "#FFFF00"
elif i < Oceania:
color = "#5555FF"
else:
color = "#FF8800"
header.setBackground(QtGui.QBrush(QtGui.QColor(color)))
[docs]
def getrates(self):
"""Get rates exchanges from file"""
filename = conf_dir + "moneda.dat"
getrates(filename)
self.value = Currency(self.value)
self.fecha.setText(self.tr("Date") + ": " + self.value.date)
if self.value != 0:
self.update(0, 0)
[docs]
class UI_unitConverter(QtWidgets.QDialog):
"""Dialog to choose between the availables unit,
used as main window tool
"""
[docs]
def __init__(self, parent=None):
super().__init__(parent)
self.setWindowTitle(self.tr("Units converter"))
self.__TEXTSTATUS__ = self.tr("Launched unit converter aplication")
self.verticalLayout = QtWidgets.QVBoxLayout(self)
self.lista = QtWidgets.QListWidget()
self.lista.itemDoubleClicked.connect(self.showChildWindow)
self.verticalLayout.addWidget(self.lista)
self.buttonBox = QtWidgets.QDialogButtonBox(
QtWidgets.QDialogButtonBox.StandardButton.Close)
self.buttonBox.rejected.connect(self.reject)
self.verticalLayout.addWidget(self.buttonBox)
for unidad in _all:
self.lista.addItem(unidad.__title__)
self.lista.setCurrentRow(-1)
logging.info(self.tr("Starting unit converte tool"))
[docs]
def showChildWindow(self):
"""Show child window with selected unit converter"""
indice = self.lista.currentRow()
if _all[indice].__name__ == "Currency":
dialog = moneda()
else:
dialog = UI_conversorUnidades(_all[indice])
dialog.exec()
if __name__ == "__main__":
import sys
app = QtWidgets.QApplication(sys.argv)
# conversion_unidades = UI_unitConverter()
conversion_unidades = moneda()
conversion_unidades.show()
sys.exit(app.exec())
