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horizontal_line.py
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horizontal_line.py
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# -*- coding: utf-8 -*-
# Copyright 2007-2022 The HyperSpy developers
#
# This file is part of HyperSpy.
#
# HyperSpy is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# HyperSpy is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with HyperSpy. If not, see <http://www.gnu.org/licenses/>.
from hyperspy.drawing.widgets import Widget1DBase
from hyperspy.drawing.utils import picker_kwargs
from hyperspy.defaults_parser import preferences
class HorizontalLineWidget(Widget1DBase):
"""A draggable, horizontal line widget.
"""
def _update_patch_position(self):
if self.is_on and self.patch:
self.patch[0].set_ydata(self._pos[0])
self.draw_patch()
def _set_patch(self):
ax = self.ax
kwargs = picker_kwargs(preferences.Plot.pick_tolerance)
self._patch = [ax.axhline(
self._pos[0],
color=self.color,
alpha=self.alpha,
**kwargs)]
def _onmousemove(self, event):
"""on mouse motion draw the cursor if picked"""
if self.picked is True and event.inaxes:
self.position = (event.ydata,)