1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
|
#****************************************************************************
# numedit.py, provides a number entry editor
#
# ConvertAll, a units conversion program
# Copyright (C) 2014, Douglas W. Bell
#
# This is free software; you can redistribute it and/or modify it under the
# terms of the GNU General Public License, either Version 2 or any later
# version. This program is distributed in the hope that it will be useful,
# but WITTHOUT ANY WARRANTY. See the included LICENSE file for details.
#*****************************************************************************
import re
import sys
from PyQt4 import QtCore, QtGui
import unitdata
class NumEdit(QtGui.QLineEdit):
"""Number entry editor.
"""
convertRqd = QtCore.pyqtSignal()
convertNum = QtCore.pyqtSignal(str)
def __init__(self, thisUnit, otherUnit, label, status, recentUnits,
primary, parent=None):
QtGui.QLineEdit.__init__(self, parent)
self.thisUnit = thisUnit
self.otherUnit = otherUnit
self.label = label
self.status = status
self.recentUnits = recentUnits
self.primary = primary
self.onLeft = primary
self.setValidator(FloatExprValidator(self))
self.setText(self.thisUnit.formatNumStr(1.0))
self.textEdited.connect(self.convert)
def unitUpdate(self):
"""Update the editor and labels based on a unit change.
"""
if self.thisUnit.groupValid():
self.label.setTitle(self.thisUnit.unitString())
if self.otherUnit.groupValid():
try:
self.thisUnit.reduceGroup()
self.otherUnit.reduceGroup()
except unitdata.UnitDataError as text:
QtGui.QMessageBox.warning(self, 'ConvertAll',
_('Error in unit data - {0}').
format(text))
return
if self.thisUnit.categoryMatch(self.otherUnit):
self.status.setText(_('Converting...'))
if self.primary:
self.convert()
else:
self.convertRqd.emit()
return
if self.onLeft:
self.status.setText(_('Units are not compatible '
'({0} vs. {1})').
format(self.thisUnit.compatStr(),
self.otherUnit.compatStr()))
else:
self.status.setText(_('Units are not compatible '
'({0} vs. {1})').
format(self.otherUnit.compatStr(),
self.thisUnit.compatStr()))
else:
self.status.setText(_('Set units'))
else:
self.status.setText(_('Set units'))
self.label.setTitle(_('No Unit Set'))
self.setEnabled(False)
self.convertNum.emit('')
def convert(self):
"""Do conversion with self primary.
"""
self.primary = True
self.setEnabled(True)
if self.onLeft:
self.recentUnits.addEntry(self.otherUnit.unitString())
self.recentUnits.addEntry(self.thisUnit.unitString())
else:
self.recentUnits.addEntry(self.thisUnit.unitString())
self.recentUnits.addEntry(self.otherUnit.unitString())
try:
num = float(eval(self.text()))
except:
self.convertNum.emit('')
return
try:
numText = self.thisUnit.convertStr(num, self.otherUnit)
self.convertNum.emit(numText)
except unitdata.UnitDataError as text:
QtGui.QMessageBox.warning(self, 'ConvertAll',
_('Error in unit data - {0}').
format(text))
def setNum(self, numText):
"""Set text based on conversion from other number editor.
"""
if not numText:
self.setEnabled(False)
else:
self.primary = False
self.setEnabled(True)
self.setText(numText)
class FloatExprValidator(QtGui.QValidator):
"""Validator for float python expressions typed into NumEdit.
"""
invalidRe = re.compile(r'[^\d\.eE\+\-\*/\(\)]')
def __init__(self, parent):
QtGui.QValidator.__init__(self, parent)
def validate(self, inputStr, pos):
"""Check for valid characters in entry.
"""
if FloatExprValidator.invalidRe.search(inputStr):
return (QtGui.QValidator.Invalid, inputStr, pos)
return (QtGui.QValidator.Acceptable, inputStr, pos)
|
