[092a3d9] | 1 | """ |
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| 2 | Allows users to change the range of the current graph |
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| 3 | """ |
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| 4 | from PyQt4 import QtGui |
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| 5 | from PyQt4 import QtCore |
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| 6 | import path_prepare |
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| 7 | |
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| 8 | import matplotlib as mpl |
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| 9 | from matplotlib import pylab |
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| 10 | import numpy |
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| 11 | |
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| 12 | from matplotlib.backends.backend_qt4agg import FigureCanvasQTAgg as FigureCanvas |
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| 13 | from sas.sasgui.guiframe.dataFitting import Data2D |
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| 14 | from sas.qtgui.GuiUtils import formatNumber |
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[5d89f43] | 15 | from rangeSlider import RangeSlider |
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[092a3d9] | 16 | |
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| 17 | DEFAULT_MAP = 'jet' |
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| 18 | |
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| 19 | # Local UI |
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| 20 | from sas.qtgui.UI.ColorMapUI import Ui_ColorMapUI |
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| 21 | |
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| 22 | class ColorMap(QtGui.QDialog, Ui_ColorMapUI): |
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[5d89f43] | 23 | apply_signal = QtCore.pyqtSignal(tuple, str) |
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[092a3d9] | 24 | def __init__(self, parent=None, cmap=None, vmin=0.0, vmax=100.0, data=None): |
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| 25 | super(ColorMap, self).__init__() |
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| 26 | |
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| 27 | self.setupUi(self) |
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| 28 | assert(isinstance(data, Data2D)) |
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| 29 | |
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| 30 | self.data = data |
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| 31 | self._cmap_orig = self._cmap = cmap if cmap is not None else DEFAULT_MAP |
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| 32 | self.all_maps = [m for m in pylab.cm.datad] |
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| 33 | self.maps = sorted(m for m in self.all_maps if not m.endswith("_r")) |
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| 34 | self.rmaps = sorted(set(self.all_maps) - set(self.maps)) |
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| 35 | |
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[5d89f43] | 36 | self.vmin = self.vmin_orig = vmin |
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| 37 | self.vmax = self.vmax_orig = vmax |
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[092a3d9] | 38 | |
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| 39 | # Initialize detector labels |
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| 40 | self.initDetectorData() |
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| 41 | |
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| 42 | # Initialize the combo box |
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| 43 | self.initMapCombobox() |
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| 44 | |
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[5d89f43] | 45 | self.initRangeSlider() |
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| 46 | |
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[092a3d9] | 47 | # Add the color map component |
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| 48 | self.initColorMap() |
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| 49 | |
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| 50 | # Initialize validators on amplitude textboxes |
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| 51 | validator_min = QtGui.QDoubleValidator(self.txtMinAmplitude) |
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| 52 | validator_min.setNotation(0) |
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| 53 | self.txtMinAmplitude.setValidator(validator_min) |
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| 54 | validator_max = QtGui.QDoubleValidator(self.txtMaxAmplitude) |
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| 55 | validator_max.setNotation(0) |
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| 56 | self.txtMaxAmplitude.setValidator(validator_max) |
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| 57 | |
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[5d89f43] | 58 | # Set the initial amplitudes |
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| 59 | self.txtMinAmplitude.setText(formatNumber(self.vmin)) |
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| 60 | self.txtMaxAmplitude.setText(formatNumber(self.vmax)) |
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| 61 | |
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[092a3d9] | 62 | # Enforce constant size on the widget |
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| 63 | self.setFixedSize(self.minimumSizeHint()) |
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| 64 | |
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| 65 | # Handle combobox changes |
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| 66 | self.cbColorMap.currentIndexChanged.connect(self.onMapIndexChange) |
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| 67 | |
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| 68 | # Handle checkbox changes |
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| 69 | self.chkReverse.stateChanged.connect(self.onColorMapReversed) |
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| 70 | |
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[5d89f43] | 71 | # Handle the Reset button click |
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[092a3d9] | 72 | self.buttonBox.button(QtGui.QDialogButtonBox.Reset).clicked.connect(self.onReset) |
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| 73 | |
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[5d89f43] | 74 | # Handle the Apply button click |
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| 75 | self.buttonBox.button(QtGui.QDialogButtonBox.Apply).clicked.connect(self.onApply) |
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| 76 | |
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[092a3d9] | 77 | # Handle the amplitude setup |
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| 78 | self.txtMinAmplitude.editingFinished.connect(self.onAmplitudeChange) |
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| 79 | self.txtMaxAmplitude.editingFinished.connect(self.onAmplitudeChange) |
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| 80 | |
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| 81 | def cmap(self): |
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| 82 | """ |
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| 83 | Getter for the color map |
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| 84 | """ |
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| 85 | return self._cmap |
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| 86 | |
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| 87 | def norm(self): |
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| 88 | """ |
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| 89 | Getter for the color map norm |
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| 90 | """ |
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| 91 | return (self._norm.vmin, self._norm.vmax) |
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| 92 | |
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[03c372d] | 93 | def onReset(self): |
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[092a3d9] | 94 | """ |
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| 95 | Respond to the Reset button click |
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| 96 | """ |
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| 97 | # Go back to original settings |
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| 98 | self._cmap = self._cmap_orig |
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[5d89f43] | 99 | self.vmin = self.vmin_orig |
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| 100 | self.vmax = self.vmax_orig |
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[092a3d9] | 101 | self._norm = mpl.colors.Normalize(vmin=self.vmin, vmax=self.vmax) |
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[5d89f43] | 102 | self.txtMinAmplitude.setText(formatNumber(self.vmin)) |
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| 103 | self.txtMaxAmplitude.setText(formatNumber(self.vmax)) |
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[092a3d9] | 104 | self.initMapCombobox() |
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[5d89f43] | 105 | self.slider.setMinimum(self.vmin) |
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| 106 | self.slider.setMaximum(self.vmax) |
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| 107 | self.slider.setLowValue(self.vmin) |
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| 108 | self.slider.setHighValue(self.vmax) |
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[092a3d9] | 109 | # Redraw the widget |
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| 110 | self.redrawColorBar() |
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[5d89f43] | 111 | self.canvas.draw() |
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| 112 | |
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| 113 | def onApply(self): |
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| 114 | """ |
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| 115 | Respond to the Apply button click. |
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| 116 | Send a signal to the plotter with vmin/vmax/cmap for chart update |
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| 117 | """ |
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| 118 | self.apply_signal.emit(self.norm(), self.cmap()) |
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[092a3d9] | 119 | |
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| 120 | def initDetectorData(self): |
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| 121 | """ |
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| 122 | Fill out the Detector labels |
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| 123 | """ |
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| 124 | xnpts = len(self.data.x_bins) |
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| 125 | ynpts = len(self.data.y_bins) |
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| 126 | self.lblWidth.setText(formatNumber(xnpts)) |
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| 127 | self.lblHeight.setText(formatNumber(ynpts)) |
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| 128 | xmax = max(self.data.xmin, self.data.xmax) |
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| 129 | ymax = max(self.data.ymin, self.data.ymax) |
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| 130 | qmax = numpy.sqrt(numpy.power(xmax, 2) + numpy.power(ymax, 2)) |
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| 131 | self.lblQmax.setText(formatNumber(qmax)) |
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| 132 | self.lblStopRadius.setText(formatNumber(self.data.xmin)) |
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| 133 | |
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| 134 | def initMapCombobox(self): |
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| 135 | """ |
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| 136 | Fill out the combo box with all available color maps |
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| 137 | """ |
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| 138 | if self._cmap in self.rmaps: |
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| 139 | maps = self.rmaps |
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| 140 | # Assure correct state of the checkbox |
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| 141 | self.chkReverse.setChecked(True) |
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| 142 | else: |
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| 143 | maps = self.maps |
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| 144 | # Assure correct state of the checkbox |
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| 145 | self.chkReverse.setChecked(False) |
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| 146 | |
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| 147 | self.cbColorMap.addItems(maps) |
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| 148 | # Set the default/passed map |
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| 149 | self.cbColorMap.setCurrentIndex(self.cbColorMap.findText(self._cmap)) |
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| 150 | |
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[5d89f43] | 151 | def initRangeSlider(self): |
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| 152 | """ |
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| 153 | Create and display the double slider for data range mapping. |
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| 154 | """ |
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| 155 | self.slider = RangeSlider() |
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| 156 | self.slider.setMinimum(self.vmin) |
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| 157 | self.slider.setMaximum(self.vmax) |
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| 158 | self.slider.setLowValue(self.vmin) |
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| 159 | self.slider.setHighValue(self.vmax) |
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| 160 | self.slider.setOrientation(QtCore.Qt.Horizontal) |
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| 161 | |
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| 162 | self.slider_label = QtGui.QLabel() |
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| 163 | self.slider_label.setText("Drag the sliders to adjust color range.") |
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| 164 | |
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| 165 | def set_vmin(value): |
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| 166 | self.vmin = value |
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| 167 | self.txtMinAmplitude.setText(str(value)) |
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| 168 | self.updateMap() |
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| 169 | def set_vmax(value): |
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| 170 | self.vmax = value |
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| 171 | self.txtMaxAmplitude.setText(str(value)) |
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| 172 | self.updateMap() |
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| 173 | |
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| 174 | self.slider.lowValueChanged.connect(set_vmin) |
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| 175 | self.slider.highValueChanged.connect(set_vmin) |
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| 176 | |
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| 177 | def updateMap(self): |
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| 178 | self._norm = mpl.colors.Normalize(vmin=self.vmin, vmax=self.vmax) |
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| 179 | self.redrawColorBar() |
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| 180 | self.canvas.draw() |
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| 181 | |
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[092a3d9] | 182 | def initColorMap(self): |
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| 183 | """ |
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| 184 | Prepare and display the color map |
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| 185 | """ |
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| 186 | self.fig = mpl.figure.Figure(figsize=(4, 1)) |
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| 187 | self.ax1 = self.fig.add_axes([0.05, 0.65, 0.9, 0.15]) |
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[5d89f43] | 188 | |
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[092a3d9] | 189 | self._norm = mpl.colors.Normalize(vmin=self.vmin, vmax=self.vmax) |
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| 190 | self.redrawColorBar() |
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| 191 | self.canvas = FigureCanvas(self.fig) |
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[5d89f43] | 192 | |
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[092a3d9] | 193 | layout = QtGui.QVBoxLayout() |
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[5d89f43] | 194 | layout.addWidget(self.slider_label) |
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| 195 | layout.addWidget(self.slider) |
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[092a3d9] | 196 | layout.addWidget(self.canvas) |
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[5d89f43] | 197 | |
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[092a3d9] | 198 | self.widget.setLayout(layout) |
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| 199 | |
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| 200 | def onMapIndexChange(self, index): |
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| 201 | """ |
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| 202 | Respond to the color map change event |
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| 203 | """ |
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| 204 | new_map = str(self.cbColorMap.itemText(index)) |
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| 205 | self._cmap = new_map |
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| 206 | self.redrawColorBar() |
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[5d89f43] | 207 | self.canvas.draw() |
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[092a3d9] | 208 | |
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| 209 | def redrawColorBar(self): |
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| 210 | """ |
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| 211 | Call ColorbarBase with current values, effectively redrawing the widget |
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| 212 | """ |
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[5d89f43] | 213 | self.cb = mpl.colorbar.ColorbarBase(self.ax1, cmap=self._cmap, |
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| 214 | norm=self._norm, |
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| 215 | orientation='horizontal') |
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| 216 | self.cb.set_label('Color map range') |
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[092a3d9] | 217 | |
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| 218 | def onColorMapReversed(self, isChecked): |
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| 219 | """ |
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| 220 | Respond to ticking/unticking the color map reverse checkbox |
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| 221 | """ |
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| 222 | current_map = str(self.cbColorMap.currentText()) |
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| 223 | if isChecked: |
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| 224 | # Add "_r" to map name for the reversed version |
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| 225 | new_map = current_map + "_r" |
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| 226 | maps = self.rmaps |
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| 227 | # Assure the reversed map exists. |
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| 228 | if new_map not in maps: |
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| 229 | new_map = maps[0] |
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| 230 | else: |
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| 231 | new_map = current_map[:-2] # "_r" = last two chars |
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| 232 | maps = self.maps |
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| 233 | # Base map for the reversed map should ALWAYS exist, |
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| 234 | # but let's be paranoid here |
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| 235 | if new_map not in maps: |
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| 236 | new_map = maps[0] |
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| 237 | |
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| 238 | self._cmap = new_map |
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[5d89f43] | 239 | # Clear the content of the combobox. |
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[092a3d9] | 240 | # Needs signal blocking, or else onMapIndexChange() spoils it all |
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| 241 | self.cbColorMap.blockSignals(True) |
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| 242 | self.cbColorMap.clear() |
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| 243 | # Add the new set of maps |
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| 244 | self.cbColorMap.addItems(maps) |
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| 245 | # Remove the signal block before the proper index set |
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| 246 | self.cbColorMap.blockSignals(False) |
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| 247 | self.cbColorMap.setCurrentIndex(self.cbColorMap.findText(new_map)) |
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| 248 | |
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| 249 | def onAmplitudeChange(self): |
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| 250 | """ |
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| 251 | Respond to editing the amplitude fields |
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| 252 | """ |
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| 253 | min_amp = self.vmin |
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| 254 | max_amp = self.vmax |
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| 255 | |
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| 256 | try: |
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| 257 | min_amp = float(self.txtMinAmplitude.text()) |
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| 258 | except ValueError: |
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| 259 | pass |
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| 260 | try: |
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| 261 | max_amp = float(self.txtMaxAmplitude.text()) |
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| 262 | except ValueError: |
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| 263 | pass |
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| 264 | |
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| 265 | self._norm = mpl.colors.Normalize(vmin=min_amp, vmax=max_amp) |
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| 266 | self.redrawColorBar() |
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[5d89f43] | 267 | self.canvas.draw() |
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