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Diffstat (limited to 'src/silx/gui/plot/test/testColorBar.py')
| -rw-r--r-- | src/silx/gui/plot/test/testColorBar.py | 340 |
1 files changed, 340 insertions, 0 deletions
diff --git a/src/silx/gui/plot/test/testColorBar.py b/src/silx/gui/plot/test/testColorBar.py new file mode 100644 index 0000000..3dc8ff1 --- /dev/null +++ b/src/silx/gui/plot/test/testColorBar.py @@ -0,0 +1,340 @@ +# coding: utf-8 +# /*########################################################################## +# +# Copyright (c) 2016-2021 European Synchrotron Radiation Facility +# +# Permission is hereby granted, free of charge, to any person obtaining a copy +# of this software and associated documentation files (the "Software"), to deal +# in the Software without restriction, including without limitation the rights +# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell +# copies of the Software, and to permit persons to whom the Software is +# furnished to do so, subject to the following conditions: +# +# The above copyright notice and this permission notice shall be included in +# all copies or substantial portions of the Software. +# +# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER +# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, +# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN +# THE SOFTWARE. +# +# ###########################################################################*/ +"""Basic tests for ColorBar featues and sub widgets of Colorbar module""" + +__authors__ = ["H. Payno"] +__license__ = "MIT" +__date__ = "24/04/2018" + +import unittest +from silx.gui.utils.testutils import TestCaseQt +from silx.gui.plot.ColorBar import _ColorScale +from silx.gui.plot.ColorBar import ColorBarWidget +from silx.gui.colors import Colormap +from silx.math.colormap import LinearNormalization, LogarithmicNormalization +from silx.gui.plot import Plot2D +from silx.gui import qt +import numpy + + +class TestColorScale(TestCaseQt): + """Test that interaction with the colorScale is correct""" + def setUp(self): + super(TestColorScale, self).setUp() + self.colorScaleWidget = _ColorScale(colormap=None, parent=None) + self.colorScaleWidget.show() + self.qWaitForWindowExposed(self.colorScaleWidget) + + def tearDown(self): + self.qapp.processEvents() + self.colorScaleWidget.setAttribute(qt.Qt.WA_DeleteOnClose) + self.colorScaleWidget.close() + del self.colorScaleWidget + super(TestColorScale, self).tearDown() + + def testNoColormap(self): + """Test _ColorScale without a colormap""" + colormap = self.colorScaleWidget.getColormap() + self.assertIsNone(colormap) + + def testRelativePositionLinear(self): + self.colorMapLin1 = Colormap(name='gray', + normalization=Colormap.LINEAR, + vmin=0.0, + vmax=1.0) + self.colorScaleWidget.setColormap(self.colorMapLin1) + + self.assertTrue( + self.colorScaleWidget.getValueFromRelativePosition(0.25) == 0.25) + self.assertTrue( + self.colorScaleWidget.getValueFromRelativePosition(0.5) == 0.5) + self.assertTrue( + self.colorScaleWidget.getValueFromRelativePosition(1.0) == 1.0) + + self.colorMapLin2 = Colormap(name='viridis', + normalization=Colormap.LINEAR, + vmin=-10, + vmax=0) + self.colorScaleWidget.setColormap(self.colorMapLin2) + + self.assertTrue( + self.colorScaleWidget.getValueFromRelativePosition(0.25) == -7.5) + self.assertTrue( + self.colorScaleWidget.getValueFromRelativePosition(0.5) == -5.0) + self.assertTrue( + self.colorScaleWidget.getValueFromRelativePosition(1.0) == 0.0) + + def testRelativePositionLog(self): + self.colorMapLog1 = Colormap(name='temperature', + normalization=Colormap.LOGARITHM, + vmin=1.0, + vmax=100.0) + + self.colorScaleWidget.setColormap(self.colorMapLog1) + + val = self.colorScaleWidget.getValueFromRelativePosition(1.0) + self.assertAlmostEqual(val, 100.0) + + val = self.colorScaleWidget.getValueFromRelativePosition(0.5) + self.assertAlmostEqual(val, 10.0) + + val = self.colorScaleWidget.getValueFromRelativePosition(0.0) + self.assertTrue(val == 1.0) + + +class TestNoAutoscale(TestCaseQt): + """Test that ticks and color displayed are correct in the case of a colormap + with no autoscale + """ + + def setUp(self): + super(TestNoAutoscale, self).setUp() + self.plot = Plot2D() + self.colorBar = self.plot.getColorBarWidget() + self.colorBar.setVisible(True) # Makes sure the colormap is visible + self.tickBar = self.colorBar.getColorScaleBar().getTickBar() + self.colorScale = self.colorBar.getColorScaleBar().getColorScale() + + self.plot.show() + self.qWaitForWindowExposed(self.plot) + + def tearDown(self): + self.qapp.processEvents() + self.tickBar = None + self.colorScale = None + del self.colorBar + self.plot.setAttribute(qt.Qt.WA_DeleteOnClose) + self.plot.close() + del self.plot + super(TestNoAutoscale, self).tearDown() + + def testLogNormNoAutoscale(self): + colormapLog = Colormap(name='gray', + normalization=Colormap.LOGARITHM, + vmin=1.0, + vmax=100.0) + + data = numpy.linspace(10, 1e10, 9).reshape(3, 3) + self.plot.addImage(data=data, colormap=colormapLog, legend='toto') + self.plot.setActiveImage('toto') + + # test Ticks + self.tickBar.setTicksNumber(10) + self.tickBar.computeTicks() + + ticksTh = numpy.linspace(1.0, 100.0, 10) + ticksTh = 10**ticksTh + numpy.array_equal(self.tickBar.ticks, ticksTh) + + # test ColorScale + val = self.colorScale.getValueFromRelativePosition(1.0) + self.assertAlmostEqual(val, 100.0) + + val = self.colorScale.getValueFromRelativePosition(0.0) + self.assertTrue(val == 1.0) + + def testLinearNormNoAutoscale(self): + colormapLog = Colormap(name='gray', + normalization=Colormap.LINEAR, + vmin=-4, + vmax=5) + + data = numpy.linspace(1, 9, 9).reshape(3, 3) + self.plot.addImage(data=data, colormap=colormapLog, legend='toto') + self.plot.setActiveImage('toto') + + # test Ticks + self.tickBar.setTicksNumber(10) + self.tickBar.computeTicks() + + numpy.array_equal(self.tickBar.ticks, numpy.linspace(-4, 5, 10)) + + # test ColorScale + val = self.colorScale.getValueFromRelativePosition(1.0) + self.assertTrue(val == 5.0) + + val = self.colorScale.getValueFromRelativePosition(0.0) + self.assertTrue(val == -4.0) + + +class TestColorBarWidget(TestCaseQt): + """Test interaction with the ColorBarWidget""" + + def setUp(self): + super(TestColorBarWidget, self).setUp() + self.plot = Plot2D() + self.colorBar = self.plot.getColorBarWidget() + self.colorBar.setVisible(True) # Makes sure the colormap is visible + + self.plot.show() + self.qWaitForWindowExposed(self.plot) + + def tearDown(self): + self.qapp.processEvents() + del self.colorBar + self.plot.setAttribute(qt.Qt.WA_DeleteOnClose) + self.plot.close() + del self.plot + super(TestColorBarWidget, self).tearDown() + + def testEmptyColorBar(self): + colorBar = ColorBarWidget(parent=None) + colorBar.show() + self.qWaitForWindowExposed(colorBar) + + def testNegativeColormaps(self): + """test the behavior of the ColorBarWidget in the case of negative + values + + Note : colorbar is modified by the Plot directly not ColorBarWidget + """ + colormapLog = Colormap(name='gray', + normalization=Colormap.LOGARITHM, + vmin=None, + vmax=None) + + data = numpy.array([-5, -4, 0, 2, 3, 5, 10, 20, 30]) + data = data.reshape(3, 3) + self.plot.addImage(data=data, colormap=colormapLog, legend='toto') + self.plot.setActiveImage('toto') + + # default behavior when with log and negative values: should set vmin + # to 1 and vmax to 10 + self.assertTrue(self.colorBar.getColorScaleBar().minVal == 2) + self.assertTrue(self.colorBar.getColorScaleBar().maxVal == 30) + + # if data is positive + data[data < 1] = data.max() + self.plot.addImage(data=data, + colormap=colormapLog, + legend='toto', + replace=True) + self.plot.setActiveImage('toto') + + self.assertTrue(self.colorBar.getColorScaleBar().minVal == data.min()) + self.assertTrue(self.colorBar.getColorScaleBar().maxVal == data.max()) + + def testPlotAssocation(self): + """Make sure the ColorBarWidget is properly connected with the plot""" + colormap = Colormap(name='gray', + normalization=Colormap.LINEAR, + vmin=None, + vmax=None) + + # make sure that default settings are the same (but a copy of the + self.colorBar.setPlot(self.plot) + self.assertTrue( + self.colorBar.getColormap() is self.plot.getDefaultColormap()) + + data = numpy.linspace(0, 10, 100).reshape(10, 10) + self.plot.addImage(data=data, colormap=colormap, legend='toto') + self.plot.setActiveImage('toto') + + # make sure the modification of the colormap has been done + self.assertFalse( + self.colorBar.getColormap() is self.plot.getDefaultColormap()) + self.assertTrue( + self.colorBar.getColormap() is colormap) + + # test that colorbar is updated when default plot colormap changes + self.plot.clear() + plotColormap = Colormap(name='gray', + normalization=Colormap.LOGARITHM, + vmin=None, + vmax=None) + self.plot.setDefaultColormap(plotColormap) + self.assertTrue(self.colorBar.getColormap() is plotColormap) + + def testColormapWithoutRange(self): + """Test with a colormap with vmin==vmax""" + colormap = Colormap(name='gray', + normalization=Colormap.LINEAR, + vmin=1.0, + vmax=1.0) + self.colorBar.setColormap(colormap) + + +class TestColorBarUpdate(TestCaseQt): + """Test that the ColorBar is correctly updated when the signal 'sigChanged' + of the colormap is emitted + """ + + def setUp(self): + super(TestColorBarUpdate, self).setUp() + self.plot = Plot2D() + self.colorBar = self.plot.getColorBarWidget() + self.colorBar.setVisible(True) # Makes sure the colormap is visible + self.colorBar.setPlot(self.plot) + + self.plot.show() + self.qWaitForWindowExposed(self.plot) + self.data = numpy.random.rand(9).reshape(3, 3) + + def tearDown(self): + self.qapp.processEvents() + del self.colorBar + self.plot.setAttribute(qt.Qt.WA_DeleteOnClose) + self.plot.close() + del self.plot + super(TestColorBarUpdate, self).tearDown() + + def testUpdateColorMap(self): + colormap = Colormap(name='gray', + normalization='linear', + vmin=0, + vmax=1) + + # check inital state + self.plot.addImage(data=self.data, colormap=colormap, legend='toto') + self.plot.setActiveImage('toto') + + self.assertTrue(self.colorBar.getColorScaleBar().minVal == 0) + self.assertTrue(self.colorBar.getColorScaleBar().maxVal == 1) + self.assertTrue( + self.colorBar.getColorScaleBar().getTickBar()._vmin == 0) + self.assertTrue( + self.colorBar.getColorScaleBar().getTickBar()._vmax == 1) + self.assertIsInstance( + self.colorBar.getColorScaleBar().getTickBar()._normalizer, + LinearNormalization) + + # update colormap + colormap.setVMin(0.5) + self.assertTrue(self.colorBar.getColorScaleBar().minVal == 0.5) + self.assertTrue( + self.colorBar.getColorScaleBar().getTickBar()._vmin == 0.5) + + colormap.setVMax(0.8) + self.assertTrue(self.colorBar.getColorScaleBar().maxVal == 0.8) + self.assertTrue( + self.colorBar.getColorScaleBar().getTickBar()._vmax == 0.8) + + colormap.setNormalization('log') + self.assertIsInstance( + self.colorBar.getColorScaleBar().getTickBar()._normalizer, + LogarithmicNormalization) + + # TODO : should also check that if the colormap is changing then values (especially in log scale) + # should be coherent if in autoscale |