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# coding: utf-8
# /*##########################################################################
#
# Copyright (c) 2016-2018 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.
#
# ###########################################################################*/
"""A toolbar to display and edit limits of a PlotWidget
"""
from __future__ import division
__authors__ = ["V.A. Sole", "T. Vincent"]
__license__ = "MIT"
__date__ = "16/10/2017"
from ... import qt
from ...widgets.FloatEdit import FloatEdit
class LimitsToolBar(qt.QToolBar):
"""QToolBar displaying and controlling the limits of a :class:`PlotWidget`.
To run the following sample code, a QApplication must be initialized.
First, create a PlotWindow:
>>> from silx.gui.plot import PlotWindow
>>> plot = PlotWindow() # Create a PlotWindow to add the toolbar to
Then, create the LimitsToolBar and add it to the PlotWindow.
>>> from silx.gui import qt
>>> from silx.gui.plot.tools import LimitsToolBar
>>> toolbar = LimitsToolBar(plot=plot) # Create the toolbar
>>> plot.addToolBar(qt.Qt.BottomToolBarArea, toolbar) # Add it to the plot
>>> plot.show() # To display the PlotWindow with the limits toolbar
:param parent: See :class:`QToolBar`.
:param plot: :class:`PlotWidget` instance on which to operate.
:param str title: See :class:`QToolBar`.
"""
def __init__(self, parent=None, plot=None, title='Limits'):
super(LimitsToolBar, self).__init__(title, parent)
assert plot is not None
self._plot = plot
self._plot.sigPlotSignal.connect(self._plotWidgetSlot)
self._initWidgets()
@property
def plot(self):
"""The :class:`PlotWidget` the toolbar is attached to."""
return self._plot
def _initWidgets(self):
"""Create and init Toolbar widgets."""
xMin, xMax = self.plot.getXAxis().getLimits()
yMin, yMax = self.plot.getYAxis().getLimits()
self.addWidget(qt.QLabel('Limits: '))
self.addWidget(qt.QLabel(' X: '))
self._xMinFloatEdit = FloatEdit(self, xMin)
self._xMinFloatEdit.editingFinished[()].connect(
self._xFloatEditChanged)
self.addWidget(self._xMinFloatEdit)
self._xMaxFloatEdit = FloatEdit(self, xMax)
self._xMaxFloatEdit.editingFinished[()].connect(
self._xFloatEditChanged)
self.addWidget(self._xMaxFloatEdit)
self.addWidget(qt.QLabel(' Y: '))
self._yMinFloatEdit = FloatEdit(self, yMin)
self._yMinFloatEdit.editingFinished[()].connect(
self._yFloatEditChanged)
self.addWidget(self._yMinFloatEdit)
self._yMaxFloatEdit = FloatEdit(self, yMax)
self._yMaxFloatEdit.editingFinished[()].connect(
self._yFloatEditChanged)
self.addWidget(self._yMaxFloatEdit)
def _plotWidgetSlot(self, event):
"""Listen to :class:`PlotWidget` events."""
if event['event'] not in ('limitsChanged',):
return
xMin, xMax = self.plot.getXAxis().getLimits()
yMin, yMax = self.plot.getYAxis().getLimits()
self._xMinFloatEdit.setValue(xMin)
self._xMaxFloatEdit.setValue(xMax)
self._yMinFloatEdit.setValue(yMin)
self._yMaxFloatEdit.setValue(yMax)
def _xFloatEditChanged(self):
"""Handle X limits changed from the GUI."""
xMin, xMax = self._xMinFloatEdit.value(), self._xMaxFloatEdit.value()
if xMax < xMin:
xMin, xMax = xMax, xMin
self.plot.getXAxis().setLimits(xMin, xMax)
def _yFloatEditChanged(self):
"""Handle Y limits changed from the GUI."""
yMin, yMax = self._yMinFloatEdit.value(), self._yMaxFloatEdit.value()
if yMax < yMin:
yMin, yMax = yMax, yMin
self.plot.getYAxis().setLimits(yMin, yMax)
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