#!/usr/bin/env python
# coding: utf-8
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"""
Example to show the use of `ColorBarWidget` widget.
It can be associated to a plot.

In this exqmple the `ColorBarWidget` widget will display the colormap of the
active image.

To change the active image slick on the image you want to set active.
"""

__authors__ = ["H. Payno"]
__license__ = "MIT"
__date__ = "03/05/2017"


from silx.gui import qt
import numpy
from silx.gui.plot import Plot2D
from silx.gui.plot.ColorBar import ColorBarWidget

image = numpy.exp(numpy.random.rand(100, 100) * 10)

app = qt.QApplication([])

plot = Plot2D()
colorbar = ColorBarWidget(parent=None, plot=plot)
colorbar.setLegend('my colormap')
colorbar.show()
plot.show()

clm = plot.getDefaultColormap()
clm['normalization'] = 'log'
clm['name'] = 'viridis'
plot.addImage(data=image, colormap=clm, legend='image')
plot.setActiveImage('image')

app.exec_()