[2d0e0c1] | 1 | # global |
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| 2 | import sys |
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| 3 | import os |
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[b0c5e8c] | 4 | import types |
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[e90988c] | 5 | import webbrowser |
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[b0c5e8c] | 6 | |
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[4992ff2] | 7 | from PyQt5 import QtCore |
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| 8 | from PyQt5 import QtGui |
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| 9 | from PyQt5 import QtWidgets |
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[2d0e0c1] | 10 | |
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| 11 | from sas.qtgui.UI import images_rc |
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| 12 | from sas.qtgui.UI import main_resources_rc |
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[b0c5e8c] | 13 | import sas.qtgui.Utilities.GuiUtils as GuiUtils |
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| 14 | |
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[2d0e0c1] | 15 | from bumps import fitters |
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| 16 | import bumps.options |
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| 17 | |
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| 18 | from sas.qtgui.Perspectives.Fitting.UI.FittingOptionsUI import Ui_FittingOptions |
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| 19 | |
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| 20 | # Set the default optimizer |
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| 21 | |
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[aa47ea5] | 22 | class FittingMethodParameter: |
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[04a269f] | 23 | """ |
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| 24 | Descriptive meta data of a single parameter of an optimizer. |
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| 25 | """ |
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[aa47ea5] | 26 | _shortName = None |
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| 27 | _longName = None |
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| 28 | _type = None |
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[ccfe03b] | 29 | _description = None # an optional description for the user, will be shown as UI tooltip |
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[aa47ea5] | 30 | _defaultValue = None |
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| 31 | value = None |
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| 32 | |
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[ccfe03b] | 33 | def __init__(self, shortName, longName, dtype, defaultValue, description = None): |
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[aa47ea5] | 34 | self._shortName = shortName |
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| 35 | self._longName = longName |
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| 36 | self._type = dtype |
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[ccfe03b] | 37 | self._description = description |
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[aa47ea5] | 38 | self._defaultValue = defaultValue |
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| 39 | self.value = defaultValue |
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| 40 | |
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| 41 | @property |
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| 42 | def shortName(self): |
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| 43 | return self._shortName |
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| 44 | |
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| 45 | @property |
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| 46 | def longName(self): |
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| 47 | return self._longName |
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| 48 | |
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| 49 | @property |
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| 50 | def type(self): |
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| 51 | return self._type |
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| 52 | |
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| 53 | @property |
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[ccfe03b] | 54 | def description(self): |
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| 55 | return self._description |
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| 56 | |
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| 57 | @property |
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[aa47ea5] | 58 | def defaultValue(self): |
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| 59 | return self._defaultValue |
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| 60 | |
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| 61 | def __str__(self): |
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| 62 | return "'{}' ({}): {} ({})".format( |
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| 63 | self.longName, self.sortName, self.defaultValue, self.type) |
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| 64 | |
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| 65 | class FittingMethod: |
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| 66 | """ |
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| 67 | Represents a generic fitting method. |
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| 68 | """ |
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| 69 | _shortName = None |
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| 70 | _longName = None |
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| 71 | _params = None # dict of <param short names>: <FittingMethodParam> |
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| 72 | |
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| 73 | def __init__(self, shortName, longName, params): |
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| 74 | self._shortName = shortName |
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| 75 | self._longName = longName |
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| 76 | self._params = dict(zip([p.shortName for p in params], params)) |
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| 77 | |
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| 78 | @property |
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| 79 | def shortName(self): |
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| 80 | return self._shortName |
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| 81 | |
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| 82 | @property |
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| 83 | def longName(self): |
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| 84 | return self._longName |
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| 85 | |
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| 86 | @property |
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| 87 | def params(self): |
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| 88 | return self._params |
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| 89 | |
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[740a738] | 90 | def storeConfig(self): |
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| 91 | """ |
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| 92 | To be overridden by subclasses specific to optimizers. |
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| 93 | """ |
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| 94 | pass |
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| 95 | |
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[aa47ea5] | 96 | def __str__(self): |
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| 97 | return "\n".join(["{} ({})".format(self.longName, self.shortName)] |
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| 98 | + [str(p) for p in self.params]) |
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| 99 | |
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| 100 | class FittingMethods: |
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| 101 | """ |
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| 102 | A container for the available fitting methods. |
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| 103 | Allows SasView to employ other methods than those provided by the bumps package. |
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| 104 | """ |
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| 105 | _methods = None # a dict containing FitMethod objects |
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| 106 | _default = None |
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| 107 | |
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| 108 | def __init__(self): |
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| 109 | """Receives a list of FittingMethod instances to be initialized with.""" |
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| 110 | self._methods = dict() |
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| 111 | |
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| 112 | def add(self, fittingMethod): |
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| 113 | if not isinstance(fittingMethod, FittingMethod): |
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| 114 | return |
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| 115 | self._methods[fittingMethod.longName] = fittingMethod |
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| 116 | |
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| 117 | @property |
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| 118 | def longNames(self): |
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| 119 | return list(self._methods.keys()) |
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| 120 | |
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| 121 | @property |
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| 122 | def ids(self): |
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| 123 | return [fm.shortName for fm in self._methods.values()] |
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| 124 | |
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[04a269f] | 125 | def __getitem__(self, longName): |
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| 126 | return self._methods[longName] |
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[aa47ea5] | 127 | |
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[740a738] | 128 | def __len__(self): |
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| 129 | return len(self._methods) |
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| 130 | |
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| 131 | def __iter__(self): |
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| 132 | return self._methods.__iter__ |
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| 133 | |
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[aa47ea5] | 134 | @property |
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| 135 | def default(self): |
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| 136 | return self._default |
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| 137 | |
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| 138 | def setDefault(self, methodName): |
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| 139 | assert methodName in self._methods # silently fail instead? |
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| 140 | self._default = self._methods[methodName] |
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| 141 | |
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| 142 | def __str__(self): |
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| 143 | return "\n".join(["{}: {}".format(key, fm) for key, fm in self._methods.items()]) |
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[72f4834] | 144 | |
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[ccfe03b] | 145 | from sas.sascalc.fit.BumpsFitting import toolTips as bumpsToolTips |
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| 146 | |
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[740a738] | 147 | class FittingMethodBumps(FittingMethod): |
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| 148 | def storeConfig(self): |
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| 149 | """ |
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| 150 | Writes the user settings of given fitting method back to the optimizer backend |
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| 151 | where it is used once the 'fit' button is hit in the GUI. |
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| 152 | """ |
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| 153 | fitConfig = bumps.options.FIT_CONFIG |
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| 154 | fitConfig.selected_id = self.shortName |
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| 155 | for param in self.params.values(): |
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| 156 | fitConfig.values[self.shortName][param.shortName] = param.value |
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| 157 | |
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| 158 | class FittingMethodsBumps(FittingMethods): |
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| 159 | def __init__(self): |
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| 160 | """ |
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| 161 | Import fitting methods indicated by the provided list of ids from the bumps package. |
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| 162 | """ |
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| 163 | super(FittingMethodsBumps, self).__init__() |
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| 164 | ids = fitters.FIT_ACTIVE_IDS |
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| 165 | for f in fitters.FITTERS: |
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| 166 | if f.id not in ids: |
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| 167 | continue |
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| 168 | params = [] |
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| 169 | for shortName, defValue in f.settings: |
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| 170 | longName, dtype = bumps.options.FIT_FIELDS[shortName] |
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[22b4962] | 171 | dtype = self._convertParamType(dtype) |
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[ccfe03b] | 172 | key = shortName+"_"+f.id |
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| 173 | descr = bumpsToolTips.get(key, None) |
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| 174 | param = FittingMethodParameter(shortName, longName, dtype, defValue, |
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| 175 | description=descr) |
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[740a738] | 176 | params.append(param) |
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| 177 | self.add(FittingMethodBumps(f.id, f.name, params)) |
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| 178 | |
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[22b4962] | 179 | @staticmethod |
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| 180 | def _convertParamType(dtype): |
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| 181 | if dtype is bumps.options.parse_int: |
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| 182 | dtype = int |
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| 183 | elif isinstance(dtype, bumps.options.ChoiceList): |
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| 184 | dtype = tuple(dtype.choices) |
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| 185 | return dtype |
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| 186 | |
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[4992ff2] | 187 | class FittingOptions(QtWidgets.QDialog, Ui_FittingOptions): |
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[2d0e0c1] | 188 | """ |
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| 189 | Hard-coded version of the fit options dialog available from BUMPS. |
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| 190 | This should be make more "dynamic". |
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| 191 | bumps.options.FIT_FIELDS gives mapping between parameter names, parameter strings and field type |
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| 192 | (double line edit, integer line edit, combo box etc.), e.g. |
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| 193 | FIT_FIELDS = dict( |
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| 194 | samples = ("Samples", parse_int), |
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| 195 | xtol = ("x tolerance", float)) |
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| 196 | |
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| 197 | bumps.fitters.<algorithm>.settings gives mapping between algorithm, parameter name and default value: |
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| 198 | e.g. |
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| 199 | settings = [('steps', 1000), ('starts', 1), ('radius', 0.15), ('xtol', 1e-6), ('ftol', 1e-8)] |
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| 200 | """ |
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[b0c5e8c] | 201 | fit_option_changed = QtCore.pyqtSignal(str) |
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[aa47ea5] | 202 | # storing of fitting methods here for now, dependencies might indicate a better place later |
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[04a269f] | 203 | _fittingMethods = None |
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| 204 | |
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| 205 | @property |
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| 206 | def fittingMethods(self): |
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| 207 | return self._fittingMethods |
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[2d0e0c1] | 208 | |
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[c9d6b9f] | 209 | def __init__(self, parent=None): |
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[2d0e0c1] | 210 | super(FittingOptions, self).__init__(parent) |
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| 211 | self.setupUi(self) |
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[33c0561] | 212 | # disable the context help icon |
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| 213 | self.setWindowFlags(self.windowFlags() & ~QtCore.Qt.WindowContextHelpButtonHint) |
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[85487ebd] | 214 | self.setWindowTitle("Fit Algorithms") |
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[fec5842] | 215 | # no reason to have this widget resizable |
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| 216 | self.layout().setSizeConstraint(QtWidgets.QLayout.SetFixedSize) |
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[2d0e0c1] | 217 | |
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| 218 | # Fill up the algorithm combo, based on what BUMPS says is available |
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[740a738] | 219 | self._fittingMethods = FittingMethodsBumps() |
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[aa47ea5] | 220 | # option 1: hardcode the list of bumps fitting methods according to forms |
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| 221 | # option 2: create forms dynamically based on selected fitting methods |
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[740a738] | 222 | self.fittingMethods.add(FittingMethod('mcsas', 'McSAS', [])) # FIXME just testing for now |
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[aa47ea5] | 223 | self.fittingMethods.setDefault('Levenberg-Marquardt') |
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[22b4962] | 224 | |
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[aa47ea5] | 225 | # build up the comboBox finally |
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| 226 | self.cbAlgorithm.addItems(self.fittingMethods.longNames) |
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[2d0e0c1] | 227 | |
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| 228 | # Handle the Apply button click |
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[4992ff2] | 229 | self.buttonBox.button(QtWidgets.QDialogButtonBox.Ok).clicked.connect(self.onApply) |
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[b0c5e8c] | 230 | # handle the Help button click |
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[4992ff2] | 231 | self.buttonBox.button(QtWidgets.QDialogButtonBox.Help).clicked.connect(self.onHelp) |
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[2d0e0c1] | 232 | |
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[b0c5e8c] | 233 | # Assign appropriate validators |
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| 234 | self.assignValidators() |
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| 235 | |
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[72f4834] | 236 | # OK has to be initialized to True, after initial validator setup |
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[4992ff2] | 237 | self.buttonBox.button(QtWidgets.QDialogButtonBox.Ok).setEnabled(True) |
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[72f4834] | 238 | |
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[fec5842] | 239 | # Handle the combo box changes |
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| 240 | self.cbAlgorithm.currentIndexChanged.connect(self.onAlgorithmChange) |
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| 241 | |
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| 242 | # Set the default index and trigger filling the layout |
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| 243 | default_index = self.cbAlgorithm.findText(self.fittingMethods.default.longName) |
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| 244 | self.cbAlgorithm.setCurrentIndex(default_index) |
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| 245 | |
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[b0c5e8c] | 246 | def assignValidators(self): |
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| 247 | """ |
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[04a269f] | 248 | Sets the appropriate validators to the line edits as defined by FittingMethodParameter |
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[b0c5e8c] | 249 | """ |
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[af893db] | 250 | fm = self.fittingMethods[self.currentOptimizer] |
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[04a269f] | 251 | for param in fm.params.values(): |
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[b0c5e8c] | 252 | validator = None |
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[22b4962] | 253 | if param.type == int: |
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[b0c5e8c] | 254 | validator = QtGui.QIntValidator() |
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[72f4834] | 255 | validator.setBottom(0) |
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[04a269f] | 256 | elif param.type == float: |
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[d6b8a1d] | 257 | validator = GuiUtils.DoubleValidator() |
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[72f4834] | 258 | validator.setBottom(0) |
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[b0c5e8c] | 259 | else: |
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| 260 | continue |
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[04a269f] | 261 | line_edit = self.paramWidget(fm, param.shortName) |
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| 262 | if hasattr(line_edit, 'setValidator') and validator is not None: |
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| 263 | line_edit.setValidator(validator) |
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| 264 | line_edit.textChanged.connect(self.check_state) |
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| 265 | line_edit.textChanged.emit(line_edit.text()) |
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[72f4834] | 266 | |
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| 267 | def check_state(self, *args, **kwargs): |
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| 268 | sender = self.sender() |
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| 269 | validator = sender.validator() |
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| 270 | state = validator.validate(sender.text(), 0)[0] |
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| 271 | if state == QtGui.QValidator.Acceptable: |
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| 272 | color = '' # default |
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[4992ff2] | 273 | self.buttonBox.button(QtWidgets.QDialogButtonBox.Ok).setEnabled(True) |
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[72f4834] | 274 | else: |
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| 275 | color = '#fff79a' # yellow |
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[4992ff2] | 276 | self.buttonBox.button(QtWidgets.QDialogButtonBox.Ok).setEnabled(False) |
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[72f4834] | 277 | |
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| 278 | sender.setStyleSheet('QLineEdit { background-color: %s }' % color) |
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[2d0e0c1] | 279 | |
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[22b4962] | 280 | def _clearLayout(self): |
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| 281 | layout = self.groupBox.layout() |
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| 282 | for i in reversed(list(range(layout.count()))): |
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| 283 | # reversed removal avoids renumbering possibly |
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| 284 | item = layout.takeAt(i) |
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| 285 | try: # spaceritem does not have a widget |
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[fec5842] | 286 | if item.widget().objectName() == "cbAlgorithm": |
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| 287 | continue # do not delete the checkbox, will be added later again |
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[22b4962] | 288 | item.widget().setParent(None) |
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| 289 | item.widget().deleteLater() |
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| 290 | except AttributeError: |
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| 291 | pass |
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| 292 | |
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| 293 | @staticmethod |
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| 294 | def _makeLabel(name): |
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| 295 | lbl = QtWidgets.QLabel(name + ":") |
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| 296 | lbl.setAlignment(QtCore.Qt.AlignLeft|QtCore.Qt.AlignVCenter) |
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[fec5842] | 297 | lbl.setSizePolicy(QtWidgets.QSizePolicy(QtWidgets.QSizePolicy.MinimumExpanding, |
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| 298 | QtWidgets.QSizePolicy.Fixed)) |
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[22b4962] | 299 | lbl.setWordWrap(True) |
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| 300 | return lbl |
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| 301 | |
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| 302 | @staticmethod |
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| 303 | def _inputWidgetFromType(ptype, parent): |
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| 304 | """ |
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| 305 | Creates a widget for user input based on the given data type to be entered. |
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| 306 | """ |
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| 307 | widget = None |
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| 308 | if ptype in (float, int): |
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| 309 | widget = QtWidgets.QLineEdit(parent) |
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| 310 | elif isinstance(ptype, (tuple, list)): |
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| 311 | widget = QtWidgets.QComboBox(parent) |
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| 312 | widget.addItems(ptype) |
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| 313 | return widget |
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| 314 | |
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| 315 | def _fillLayout(self): |
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| 316 | fm = self.fittingMethods[self.currentOptimizer] |
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| 317 | layout = self.groupBox.layout() |
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[fec5842] | 318 | layout.addWidget(self.cbAlgorithm, 0, 0, 1, -1) |
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[22b4962] | 319 | for param in fm.params.values(): |
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[fec5842] | 320 | row = layout.rowCount()+1 |
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[ccfe03b] | 321 | label = self._makeLabel(param.longName) |
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| 322 | layout.addWidget(label, row, 0) |
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[22b4962] | 323 | widget = self._inputWidgetFromType(param.type, self) |
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| 324 | if widget is None: |
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| 325 | continue |
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[ccfe03b] | 326 | if param.description is not None: |
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| 327 | widget.setToolTip(param.description) |
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| 328 | label.setToolTip(param.description) |
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[22b4962] | 329 | layout.addWidget(widget, row, 1) |
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[ccfe03b] | 330 | widgetName = param.shortName+'_'+fm.shortName |
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[22b4962] | 331 | setattr(self, widgetName, widget) |
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| 332 | layout.addItem(QtWidgets.QSpacerItem(0, 0, vPolicy=QtWidgets.QSizePolicy.Expanding)) |
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| 333 | |
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[2d0e0c1] | 334 | def onAlgorithmChange(self, index): |
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| 335 | """ |
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| 336 | Change the page in response to combo box index |
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| 337 | """ |
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| 338 | # Find the algorithm ID from name |
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[af893db] | 339 | selectedName = self.currentOptimizer |
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[22b4962] | 340 | |
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| 341 | self._clearLayout() |
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| 342 | self._fillLayout() |
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| 343 | |
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[2d0e0c1] | 344 | # Select the requested widget |
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[04a269f] | 345 | self.updateWidgetFromConfig() |
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[b0c5e8c] | 346 | self.assignValidators() |
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| 347 | |
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[b67bfa7] | 348 | # OK has to be reinitialized to True |
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[4992ff2] | 349 | self.buttonBox.button(QtWidgets.QDialogButtonBox.Ok).setEnabled(True) |
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[b67bfa7] | 350 | |
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[04a269f] | 351 | def paramWidget(self, fittingMethod, paramShortName): |
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| 352 | """ |
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| 353 | Returns the widget associated to a FittingMethodParameter. |
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| 354 | """ |
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| 355 | if paramShortName not in fittingMethod.params: |
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| 356 | return None |
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| 357 | widget_name = 'self.'+paramShortName+'_'+fittingMethod.shortName |
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| 358 | widget = None |
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| 359 | try: |
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| 360 | widget = eval(widget_name) |
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| 361 | except AttributeError: |
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| 362 | pass |
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| 363 | return widget |
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| 364 | |
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[2d0e0c1] | 365 | def onApply(self): |
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| 366 | """ |
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[b0c5e8c] | 367 | Update the fitter object |
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[2d0e0c1] | 368 | """ |
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[af893db] | 369 | fm = self.fittingMethods[self.currentOptimizer] |
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[04a269f] | 370 | for param in fm.params.values(): |
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| 371 | line_edit = self.paramWidget(fm, param.shortName) |
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[ff3b293] | 372 | if line_edit is None or not isinstance(line_edit, QtWidgets.QLineEdit): |
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| 373 | continue |
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| 374 | color = line_edit.palette().color(QtGui.QPalette.Background).name() |
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| 375 | if color == '#fff79a': |
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| 376 | # Show a custom tooltip and return |
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| 377 | tooltip = "<html><b>Please enter valid values in all fields.</html>" |
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| 378 | QtWidgets.QToolTip.showText(line_edit.mapToGlobal( |
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[04a269f] | 379 | QtCore.QPoint(line_edit.rect().right(), line_edit.rect().bottom() + 2)), |
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| 380 | tooltip) |
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[ff3b293] | 381 | return |
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| 382 | |
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[04a269f] | 383 | # update config values from widgets before any notification is sent |
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[ea1753f] | 384 | try: |
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| 385 | self.updateConfigFromWidget(fm) |
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| 386 | except ValueError: |
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| 387 | # Don't update bumps if widget has bad data |
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| 388 | self.reject |
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[2d0e0c1] | 389 | |
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[740a738] | 390 | fm.storeConfig() # write the current settings to bumps module |
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[04a269f] | 391 | # Notify the perspective, so the window title is updated |
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| 392 | self.fit_option_changed.emit(self.cbAlgorithm.currentText()) |
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[ff3b293] | 393 | self.close() |
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[b0c5e8c] | 394 | |
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| 395 | def onHelp(self): |
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| 396 | """ |
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| 397 | Show the "Fitting options" section of help |
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| 398 | """ |
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[e90988c] | 399 | tree_location = GuiUtils.HELP_DIRECTORY_LOCATION |
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[aed0532] | 400 | tree_location += "/user/qtgui/Perspectives/Fitting/" |
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[b0c5e8c] | 401 | |
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| 402 | # Actual file anchor will depend on the combo box index |
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| 403 | # Note that we can be clusmy here, since bad current_fitter_id |
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| 404 | # will just make the page displayed from the top |
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[fec5842] | 405 | current_fitter_id = self.fittingMethods[self.currentOptimizer].shortName |
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| 406 | helpfile = "optimizer.html#fit-" + current_fitter_id |
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[b0c5e8c] | 407 | help_location = tree_location + helpfile |
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[e90988c] | 408 | webbrowser.open('file://' + os.path.realpath(help_location)) |
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[b0c5e8c] | 409 | |
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[04a269f] | 410 | @property |
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| 411 | def currentOptimizer(self): |
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[2d0e0c1] | 412 | """ |
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| 413 | Sends back the current choice of parameters |
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| 414 | """ |
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[af893db] | 415 | value = self.cbAlgorithm.currentText() |
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| 416 | return str(value) # is str() really needed? |
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[2d0e0c1] | 417 | |
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[04a269f] | 418 | def updateWidgetFromConfig(self): |
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[2d0e0c1] | 419 | """ |
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| 420 | Given the ID of the current optimizer, fetch the values |
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| 421 | and update the widget |
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| 422 | """ |
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[46477950] | 423 | fm = self.fittingMethods[self.currentOptimizer] |
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[04a269f] | 424 | for param in fm.params.values(): |
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[f86343bd] | 425 | # get the widget name of the option |
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| 426 | widget = self.paramWidget(fm, param.shortName) |
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[22b4962] | 427 | if isinstance(param.type, (tuple, list)): |
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[f86343bd] | 428 | widget.setCurrentIndex(widget.findText(str(param.value))) |
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[2d0e0c1] | 429 | else: |
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[f86343bd] | 430 | widget.setText(str(param.value)) |
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[2d0e0c1] | 431 | |
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[ea1753f] | 432 | def updateConfigFromWidget(self, fittingMethod): |
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| 433 | # update config values from widgets before any notification is sent |
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| 434 | for param in fittingMethod.params.values(): |
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| 435 | widget = self.paramWidget(fittingMethod, param.shortName) |
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| 436 | if widget is None: |
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| 437 | continue |
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| 438 | new_value = None |
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| 439 | if isinstance(widget, QtWidgets.QComboBox): |
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| 440 | new_value = widget.currentText() |
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| 441 | else: |
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| 442 | try: |
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| 443 | new_value = int(widget.text()) |
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| 444 | except ValueError: |
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| 445 | new_value = float(widget.text()) |
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| 446 | if new_value is not None: |
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| 447 | fittingMethod.params[param.shortName].value = new_value |
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