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+# coding: utf-8
+# /*##########################################################################
+#
+# Copyright (c) 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.
+#
+# ###########################################################################*/
+"""This script shows how to create a minimalistic
+:class:`~silx.gui.plot.actions.PlotAction` that clear the plot.
+
+This illustrates how to add more buttons in a plot widget toolbar.
+"""
+
+__authors__ = ["T. VINCENT"]
+__license__ = "MIT"
+__date__ = "14/02/2018"
+
+
+from silx.gui.plot.actions import PlotAction
+
+
+class ClearPlotAction(PlotAction):
+ """A QAction that can be added to PlotWidget toolbar to clear the plot"""
+
+ def __init__(self, plot, parent=None):
+ super(ClearPlotAction, self).__init__(
+ plot,
+ icon='close',
+ text='Clear',
+ tooltip='Clear the plot',
+ triggered=self._clear,
+ parent=parent)
+
+ def _clear(self):
+ """Handle action triggered and clear the plot"""
+ self.plot.clear()
+
+
+if __name__ == '__main__':
+ from silx.gui import qt
+ from silx.gui.plot import Plot1D
+
+ app = qt.QApplication([]) # First create QApplication
+
+ plot = Plot1D() # Create plotting widget
+
+ # Create a toolbar and add it to the plot widget
+ toolbar = qt.QToolBar()
+ plot.addToolBar(toolbar)
+
+ # Create clear action and add it to the toolbar
+ action = ClearPlotAction(plot, parent=plot)
+ toolbar.addAction(action)
+
+ plot.addCurve((0, 1, 2, 3, 4), (0, 1, 1.5, 1, 0)) # Add a curve to the plot
+
+ plot.show() # Show the plot widget
+ app.exec_() # Start Qt application