[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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| 29 | _defaultValue = None |
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| 30 | value = None |
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| 31 | |
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| 32 | def __init__(self, shortName, longName, dtype, defaultValue): |
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| 33 | self._shortName = shortName |
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| 34 | self._longName = longName |
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| 35 | self._type = dtype |
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| 36 | self._defaultValue = defaultValue |
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| 37 | self.value = defaultValue |
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| 38 | |
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| 39 | @property |
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| 40 | def shortName(self): |
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| 41 | return self._shortName |
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| 42 | |
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| 43 | @property |
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| 44 | def longName(self): |
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| 45 | return self._longName |
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| 46 | |
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| 47 | @property |
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| 48 | def type(self): |
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| 49 | return self._type |
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| 50 | |
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| 51 | @property |
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| 52 | def defaultValue(self): |
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| 53 | return self._defaultValue |
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| 54 | |
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| 55 | def __str__(self): |
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| 56 | return "'{}' ({}): {} ({})".format( |
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| 57 | self.longName, self.sortName, self.defaultValue, self.type) |
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| 58 | |
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| 59 | class FittingMethod: |
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| 60 | """ |
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| 61 | Represents a generic fitting method. |
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| 62 | """ |
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| 63 | _shortName = None |
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| 64 | _longName = None |
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| 65 | _params = None # dict of <param short names>: <FittingMethodParam> |
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| 66 | |
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| 67 | def __init__(self, shortName, longName, params): |
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| 68 | self._shortName = shortName |
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| 69 | self._longName = longName |
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| 70 | self._params = dict(zip([p.shortName for p in params], params)) |
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| 71 | |
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| 72 | @property |
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| 73 | def shortName(self): |
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| 74 | return self._shortName |
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| 75 | |
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| 76 | @property |
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| 77 | def longName(self): |
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| 78 | return self._longName |
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| 79 | |
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| 80 | @property |
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| 81 | def params(self): |
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| 82 | return self._params |
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| 83 | |
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[740a738] | 84 | def storeConfig(self): |
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| 85 | """ |
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| 86 | To be overridden by subclasses specific to optimizers. |
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| 87 | """ |
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| 88 | pass |
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| 89 | |
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[aa47ea5] | 90 | def __str__(self): |
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| 91 | return "\n".join(["{} ({})".format(self.longName, self.shortName)] |
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| 92 | + [str(p) for p in self.params]) |
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| 93 | |
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| 94 | class FittingMethods: |
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| 95 | """ |
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| 96 | A container for the available fitting methods. |
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| 97 | Allows SasView to employ other methods than those provided by the bumps package. |
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| 98 | """ |
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| 99 | _methods = None # a dict containing FitMethod objects |
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| 100 | _default = None |
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| 101 | |
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| 102 | def __init__(self): |
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| 103 | """Receives a list of FittingMethod instances to be initialized with.""" |
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| 104 | self._methods = dict() |
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| 105 | |
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| 106 | def add(self, fittingMethod): |
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| 107 | if not isinstance(fittingMethod, FittingMethod): |
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| 108 | return |
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| 109 | self._methods[fittingMethod.longName] = fittingMethod |
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| 110 | |
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| 111 | @property |
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| 112 | def longNames(self): |
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| 113 | return list(self._methods.keys()) |
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| 114 | |
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| 115 | @property |
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| 116 | def ids(self): |
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| 117 | return [fm.shortName for fm in self._methods.values()] |
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| 118 | |
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[04a269f] | 119 | def __getitem__(self, longName): |
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| 120 | return self._methods[longName] |
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[aa47ea5] | 121 | |
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[740a738] | 122 | def __len__(self): |
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| 123 | return len(self._methods) |
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| 124 | |
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| 125 | def __iter__(self): |
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| 126 | return self._methods.__iter__ |
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| 127 | |
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[aa47ea5] | 128 | @property |
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| 129 | def default(self): |
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| 130 | return self._default |
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| 131 | |
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| 132 | def setDefault(self, methodName): |
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| 133 | assert methodName in self._methods # silently fail instead? |
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| 134 | self._default = self._methods[methodName] |
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| 135 | |
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| 136 | def __str__(self): |
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| 137 | return "\n".join(["{}: {}".format(key, fm) for key, fm in self._methods.items()]) |
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[72f4834] | 138 | |
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[740a738] | 139 | class FittingMethodBumps(FittingMethod): |
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| 140 | def storeConfig(self): |
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| 141 | """ |
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| 142 | Writes the user settings of given fitting method back to the optimizer backend |
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| 143 | where it is used once the 'fit' button is hit in the GUI. |
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| 144 | """ |
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| 145 | fitConfig = bumps.options.FIT_CONFIG |
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| 146 | fitConfig.selected_id = self.shortName |
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| 147 | for param in self.params.values(): |
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| 148 | fitConfig.values[self.shortName][param.shortName] = param.value |
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| 149 | |
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| 150 | class FittingMethodsBumps(FittingMethods): |
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| 151 | def __init__(self): |
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| 152 | """ |
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| 153 | Import fitting methods indicated by the provided list of ids from the bumps package. |
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| 154 | """ |
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| 155 | super(FittingMethodsBumps, self).__init__() |
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| 156 | ids = fitters.FIT_ACTIVE_IDS |
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| 157 | for f in fitters.FITTERS: |
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| 158 | if f.id not in ids: |
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| 159 | continue |
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| 160 | params = [] |
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| 161 | for shortName, defValue in f.settings: |
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| 162 | longName, dtype = bumps.options.FIT_FIELDS[shortName] |
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[22b4962] | 163 | dtype = self._convertParamType(dtype) |
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[740a738] | 164 | param = FittingMethodParameter(shortName, longName, dtype, defValue) |
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| 165 | params.append(param) |
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| 166 | self.add(FittingMethodBumps(f.id, f.name, params)) |
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| 167 | |
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[22b4962] | 168 | @staticmethod |
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| 169 | def _convertParamType(dtype): |
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| 170 | if dtype is bumps.options.parse_int: |
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| 171 | dtype = int |
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| 172 | elif isinstance(dtype, bumps.options.ChoiceList): |
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| 173 | dtype = tuple(dtype.choices) |
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| 174 | return dtype |
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| 175 | |
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[4992ff2] | 176 | class FittingOptions(QtWidgets.QDialog, Ui_FittingOptions): |
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[2d0e0c1] | 177 | """ |
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| 178 | Hard-coded version of the fit options dialog available from BUMPS. |
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| 179 | This should be make more "dynamic". |
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| 180 | bumps.options.FIT_FIELDS gives mapping between parameter names, parameter strings and field type |
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| 181 | (double line edit, integer line edit, combo box etc.), e.g. |
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| 182 | FIT_FIELDS = dict( |
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| 183 | samples = ("Samples", parse_int), |
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| 184 | xtol = ("x tolerance", float)) |
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| 185 | |
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| 186 | bumps.fitters.<algorithm>.settings gives mapping between algorithm, parameter name and default value: |
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| 187 | e.g. |
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| 188 | settings = [('steps', 1000), ('starts', 1), ('radius', 0.15), ('xtol', 1e-6), ('ftol', 1e-8)] |
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| 189 | """ |
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[b0c5e8c] | 190 | fit_option_changed = QtCore.pyqtSignal(str) |
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[aa47ea5] | 191 | # storing of fitting methods here for now, dependencies might indicate a better place later |
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[04a269f] | 192 | _fittingMethods = None |
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| 193 | |
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| 194 | @property |
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| 195 | def fittingMethods(self): |
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| 196 | return self._fittingMethods |
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[2d0e0c1] | 197 | |
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[c9d6b9f] | 198 | def __init__(self, parent=None): |
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[2d0e0c1] | 199 | super(FittingOptions, self).__init__(parent) |
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| 200 | self.setupUi(self) |
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[33c0561] | 201 | # disable the context help icon |
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| 202 | self.setWindowFlags(self.windowFlags() & ~QtCore.Qt.WindowContextHelpButtonHint) |
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[2d0e0c1] | 203 | |
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| 204 | # no reason to have this widget resizable |
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| 205 | self.setFixedSize(self.minimumSizeHint()) |
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[85487ebd] | 206 | self.setWindowTitle("Fit Algorithms") |
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[2d0e0c1] | 207 | |
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| 208 | # Fill up the algorithm combo, based on what BUMPS says is available |
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[740a738] | 209 | self._fittingMethods = FittingMethodsBumps() |
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[aa47ea5] | 210 | # option 1: hardcode the list of bumps fitting methods according to forms |
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| 211 | # option 2: create forms dynamically based on selected fitting methods |
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[740a738] | 212 | self.fittingMethods.add(FittingMethod('mcsas', 'McSAS', [])) # FIXME just testing for now |
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[aa47ea5] | 213 | self.fittingMethods.setDefault('Levenberg-Marquardt') |
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[22b4962] | 214 | |
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[aa47ea5] | 215 | # build up the comboBox finally |
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| 216 | self.cbAlgorithm.addItems(self.fittingMethods.longNames) |
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[2d0e0c1] | 217 | |
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| 218 | # Handle the Apply button click |
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[4992ff2] | 219 | self.buttonBox.button(QtWidgets.QDialogButtonBox.Ok).clicked.connect(self.onApply) |
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[b0c5e8c] | 220 | # handle the Help button click |
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[4992ff2] | 221 | self.buttonBox.button(QtWidgets.QDialogButtonBox.Help).clicked.connect(self.onHelp) |
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[2d0e0c1] | 222 | |
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| 223 | # Handle the combo box changes |
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| 224 | self.cbAlgorithm.currentIndexChanged.connect(self.onAlgorithmChange) |
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| 225 | |
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| 226 | # Set the default index |
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[aa47ea5] | 227 | default_index = self.cbAlgorithm.findText(self.fittingMethods.default.longName) |
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[2d0e0c1] | 228 | self.cbAlgorithm.setCurrentIndex(default_index) |
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[8873ab7] | 229 | # previous algorithm choice |
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| 230 | self.previous_index = default_index |
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[b0c5e8c] | 231 | |
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| 232 | # Assign appropriate validators |
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| 233 | self.assignValidators() |
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| 234 | |
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[72f4834] | 235 | # Set defaults |
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[aa47ea5] | 236 | self.current_fitter_id = self.fittingMethods.default.shortName |
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[2d0e0c1] | 237 | |
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[72f4834] | 238 | # OK has to be initialized to True, after initial validator setup |
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[4992ff2] | 239 | self.buttonBox.button(QtWidgets.QDialogButtonBox.Ok).setEnabled(True) |
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[72f4834] | 240 | |
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[b0c5e8c] | 241 | def assignValidators(self): |
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| 242 | """ |
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[04a269f] | 243 | Sets the appropriate validators to the line edits as defined by FittingMethodParameter |
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[b0c5e8c] | 244 | """ |
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[af893db] | 245 | fm = self.fittingMethods[self.currentOptimizer] |
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[04a269f] | 246 | for param in fm.params.values(): |
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[b0c5e8c] | 247 | validator = None |
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[22b4962] | 248 | if param.type == int: |
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[b0c5e8c] | 249 | validator = QtGui.QIntValidator() |
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[72f4834] | 250 | validator.setBottom(0) |
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[04a269f] | 251 | elif param.type == float: |
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[d6b8a1d] | 252 | validator = GuiUtils.DoubleValidator() |
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[72f4834] | 253 | validator.setBottom(0) |
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[b0c5e8c] | 254 | else: |
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| 255 | continue |
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[04a269f] | 256 | line_edit = self.paramWidget(fm, param.shortName) |
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| 257 | if hasattr(line_edit, 'setValidator') and validator is not None: |
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| 258 | line_edit.setValidator(validator) |
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| 259 | line_edit.textChanged.connect(self.check_state) |
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| 260 | line_edit.textChanged.emit(line_edit.text()) |
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[72f4834] | 261 | |
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| 262 | def check_state(self, *args, **kwargs): |
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| 263 | sender = self.sender() |
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| 264 | validator = sender.validator() |
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| 265 | state = validator.validate(sender.text(), 0)[0] |
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| 266 | if state == QtGui.QValidator.Acceptable: |
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| 267 | color = '' # default |
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[4992ff2] | 268 | self.buttonBox.button(QtWidgets.QDialogButtonBox.Ok).setEnabled(True) |
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[72f4834] | 269 | else: |
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| 270 | color = '#fff79a' # yellow |
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[4992ff2] | 271 | self.buttonBox.button(QtWidgets.QDialogButtonBox.Ok).setEnabled(False) |
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[72f4834] | 272 | |
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| 273 | sender.setStyleSheet('QLineEdit { background-color: %s }' % color) |
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[2d0e0c1] | 274 | |
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[22b4962] | 275 | def _clearLayout(self): |
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| 276 | layout = self.groupBox.layout() |
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| 277 | for i in reversed(list(range(layout.count()))): |
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| 278 | # reversed removal avoids renumbering possibly |
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| 279 | item = layout.itemAt(i) |
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| 280 | try: |
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| 281 | if item.widget().objectName() == "cbAlgorithm": |
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| 282 | continue |
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| 283 | except AttributeError: |
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| 284 | pass |
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| 285 | item = layout.takeAt(i) |
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| 286 | try: # spaceritem does not have a widget |
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| 287 | item.widget().setParent(None) |
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| 288 | item.widget().deleteLater() |
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| 289 | except AttributeError: |
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| 290 | pass |
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| 291 | |
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| 292 | @staticmethod |
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| 293 | def _makeLabel(name): |
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| 294 | lbl = QtWidgets.QLabel(name + ":") |
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| 295 | lbl.setAlignment(QtCore.Qt.AlignLeft|QtCore.Qt.AlignVCenter) |
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| 296 | lbl.setWordWrap(True) |
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| 297 | return lbl |
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| 298 | |
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| 299 | @staticmethod |
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| 300 | def _inputWidgetFromType(ptype, parent): |
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| 301 | """ |
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| 302 | Creates a widget for user input based on the given data type to be entered. |
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| 303 | """ |
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| 304 | widget = None |
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| 305 | if ptype in (float, int): |
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| 306 | widget = QtWidgets.QLineEdit(parent) |
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| 307 | elif isinstance(ptype, (tuple, list)): |
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| 308 | widget = QtWidgets.QComboBox(parent) |
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| 309 | widget.addItems(ptype) |
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| 310 | return widget |
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| 311 | |
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| 312 | def _fillLayout(self): |
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| 313 | fm = self.fittingMethods[self.currentOptimizer] |
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| 314 | layout = self.groupBox.layout() |
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| 315 | # label for the name of the optimizer, span the whole row |
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| 316 | layout.addWidget(self._makeLabel(fm.longName), layout.rowCount()+1, 0, 1, -1) |
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| 317 | for param in fm.params.values(): |
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| 318 | row, column = layout.rowCount()+1, layout.columnCount() |
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| 319 | layout.addWidget(self._makeLabel(param.longName), row, 0) |
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| 320 | widget = self._inputWidgetFromType(param.type, self) |
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| 321 | if widget is None: |
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| 322 | continue |
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| 323 | widgetName = param.shortName+'_'+fm.shortName |
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| 324 | layout.addWidget(widget, row, 1) |
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| 325 | setattr(self, widgetName, widget) |
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| 326 | layout.addItem(QtWidgets.QSpacerItem(0, 0, vPolicy=QtWidgets.QSizePolicy.Expanding)) |
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| 327 | |
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[2d0e0c1] | 328 | def onAlgorithmChange(self, index): |
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| 329 | """ |
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| 330 | Change the page in response to combo box index |
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| 331 | """ |
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| 332 | # Find the algorithm ID from name |
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[af893db] | 333 | selectedName = self.currentOptimizer |
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[22b4962] | 334 | |
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| 335 | self._clearLayout() |
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| 336 | self._fillLayout() |
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| 337 | |
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[aa47ea5] | 338 | if selectedName in self.fittingMethods.longNames: |
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| 339 | self.current_fitter_id = self.fittingMethods[selectedName].shortName |
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[2d0e0c1] | 340 | |
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| 341 | # find the right stacked widget |
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| 342 | widget_name = "self.page_"+str(self.current_fitter_id) |
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| 343 | |
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| 344 | # Convert the name into widget instance |
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[8873ab7] | 345 | try: |
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| 346 | widget_to_activate = eval(widget_name) |
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| 347 | except AttributeError: |
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| 348 | # We don't yet have this optimizer. |
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| 349 | # Show message |
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| 350 | msg = "This algorithm has not yet been implemented in SasView.\n" |
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| 351 | msg += "Please choose a different algorithm" |
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| 352 | QtWidgets.QMessageBox.warning(self, |
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| 353 | 'Warning', |
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| 354 | msg, |
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| 355 | QtWidgets.QMessageBox.Ok) |
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| 356 | # Move the index to previous position |
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| 357 | self.cbAlgorithm.setCurrentIndex(self.previous_index) |
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| 358 | return |
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| 359 | |
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[2d0e0c1] | 360 | # Select the requested widget |
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[04a269f] | 361 | self.updateWidgetFromConfig() |
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[b0c5e8c] | 362 | self.assignValidators() |
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| 363 | |
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[b67bfa7] | 364 | # OK has to be reinitialized to True |
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[4992ff2] | 365 | self.buttonBox.button(QtWidgets.QDialogButtonBox.Ok).setEnabled(True) |
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[b67bfa7] | 366 | |
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[8873ab7] | 367 | # keep reference |
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| 368 | self.previous_index = index |
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| 369 | |
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[04a269f] | 370 | def paramWidget(self, fittingMethod, paramShortName): |
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| 371 | """ |
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| 372 | Returns the widget associated to a FittingMethodParameter. |
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| 373 | """ |
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| 374 | if paramShortName not in fittingMethod.params: |
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| 375 | return None |
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| 376 | widget_name = 'self.'+paramShortName+'_'+fittingMethod.shortName |
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| 377 | widget = None |
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| 378 | try: |
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| 379 | widget = eval(widget_name) |
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| 380 | except AttributeError: |
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| 381 | pass |
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| 382 | return widget |
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| 383 | |
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[2d0e0c1] | 384 | def onApply(self): |
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| 385 | """ |
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[b0c5e8c] | 386 | Update the fitter object |
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[2d0e0c1] | 387 | """ |
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[af893db] | 388 | fm = self.fittingMethods[self.currentOptimizer] |
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[04a269f] | 389 | for param in fm.params.values(): |
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| 390 | line_edit = self.paramWidget(fm, param.shortName) |
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[ff3b293] | 391 | if line_edit is None or not isinstance(line_edit, QtWidgets.QLineEdit): |
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| 392 | continue |
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| 393 | color = line_edit.palette().color(QtGui.QPalette.Background).name() |
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| 394 | if color == '#fff79a': |
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| 395 | # Show a custom tooltip and return |
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| 396 | tooltip = "<html><b>Please enter valid values in all fields.</html>" |
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| 397 | QtWidgets.QToolTip.showText(line_edit.mapToGlobal( |
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[04a269f] | 398 | QtCore.QPoint(line_edit.rect().right(), line_edit.rect().bottom() + 2)), |
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| 399 | tooltip) |
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[ff3b293] | 400 | return |
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| 401 | |
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[04a269f] | 402 | # update config values from widgets before any notification is sent |
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[ea1753f] | 403 | try: |
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| 404 | self.updateConfigFromWidget(fm) |
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| 405 | except ValueError: |
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| 406 | # Don't update bumps if widget has bad data |
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| 407 | self.reject |
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[2d0e0c1] | 408 | |
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[740a738] | 409 | fm.storeConfig() # write the current settings to bumps module |
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[04a269f] | 410 | # Notify the perspective, so the window title is updated |
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| 411 | self.fit_option_changed.emit(self.cbAlgorithm.currentText()) |
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[ff3b293] | 412 | self.close() |
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[b0c5e8c] | 413 | |
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| 414 | def onHelp(self): |
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| 415 | """ |
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| 416 | Show the "Fitting options" section of help |
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| 417 | """ |
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[e90988c] | 418 | tree_location = GuiUtils.HELP_DIRECTORY_LOCATION |
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[aed0532] | 419 | tree_location += "/user/qtgui/Perspectives/Fitting/" |
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[b0c5e8c] | 420 | |
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| 421 | # Actual file anchor will depend on the combo box index |
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| 422 | # Note that we can be clusmy here, since bad current_fitter_id |
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| 423 | # will just make the page displayed from the top |
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| 424 | helpfile = "optimizer.html#fit-" + self.current_fitter_id |
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| 425 | help_location = tree_location + helpfile |
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[e90988c] | 426 | webbrowser.open('file://' + os.path.realpath(help_location)) |
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[b0c5e8c] | 427 | |
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[04a269f] | 428 | @property |
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| 429 | def currentOptimizer(self): |
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[2d0e0c1] | 430 | """ |
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| 431 | Sends back the current choice of parameters |
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| 432 | """ |
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[af893db] | 433 | value = self.cbAlgorithm.currentText() |
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| 434 | return str(value) # is str() really needed? |
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[2d0e0c1] | 435 | |
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[04a269f] | 436 | def updateWidgetFromConfig(self): |
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[2d0e0c1] | 437 | """ |
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| 438 | Given the ID of the current optimizer, fetch the values |
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| 439 | and update the widget |
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| 440 | """ |
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[46477950] | 441 | fm = self.fittingMethods[self.currentOptimizer] |
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[04a269f] | 442 | for param in fm.params.values(): |
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[2d0e0c1] | 443 | # Find the widget name of the option |
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| 444 | # e.g. 'samples' for 'dream' is 'self.samples_dream' |
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[22b4962] | 445 | widget_name = 'self.'+param.shortName+'_'+fm.shortName |
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| 446 | if isinstance(param.type, (tuple, list)): |
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[2d0e0c1] | 447 | control = eval(widget_name) |
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[04a269f] | 448 | control.setCurrentIndex(control.findText(str(param.value))) |
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[2d0e0c1] | 449 | else: |
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[04a269f] | 450 | eval(widget_name).setText(str(param.value)) |
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[2d0e0c1] | 451 | |
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[ea1753f] | 452 | def updateConfigFromWidget(self, fittingMethod): |
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| 453 | # update config values from widgets before any notification is sent |
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| 454 | for param in fittingMethod.params.values(): |
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| 455 | widget = self.paramWidget(fittingMethod, param.shortName) |
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| 456 | if widget is None: |
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| 457 | continue |
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| 458 | new_value = None |
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| 459 | if isinstance(widget, QtWidgets.QComboBox): |
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| 460 | new_value = widget.currentText() |
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| 461 | else: |
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| 462 | try: |
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| 463 | new_value = int(widget.text()) |
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| 464 | except ValueError: |
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| 465 | new_value = float(widget.text()) |
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| 466 | if new_value is not None: |
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| 467 | fittingMethod.params[param.shortName].value = new_value |
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