text: #
  # This file is part of the PyMeasure package.
  #
  # Copyright (c) 2013-2022 PyMeasure Developers
  #
  # 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.
  #
  
  import logging
  
  import pyqtgraph as pg
  
  from ..curves import ResultsCurve
  from ..Qt import QtCore, QtGui
  from .tab_widget import TabWidget
  from .plot_frame import PlotFrame
  
  log = logging.getLogger(__name__)
  log.addHandler(logging.NullHandler())
  
  
  class PlotWidget(TabWidget, QtGui.QWidget):
      """ Extends the PlotFrame to allow different columns
      of the data to be dynamically choosen
      """
  
      def __init__(self, name, columns, x_axis=None, y_axis=None, refresh_time=0.2,
                   check_status=True, linewidth=1, parent=None):
          super().__init__(name, parent)
          self.columns = columns
          self.refresh_time = refresh_time
          self.check_status = check_status
          self.linewidth = linewidth
          self._setup_ui()
          self._layout()
          if x_axis is not None:
              self.columns_x.setCurrentIndex(self.columns_x.findText(x_axis))
              self.plot_frame.change_x_axis(x_axis)
          if y_axis is not None:
              self.columns_y.setCurrentIndex(self.columns_y.findText(y_axis))
              self.plot_frame.change_y_axis(y_axis)
  
      def _setup_ui(self):
          self.columns_x_label = QtGui.QLabel(self)
          self.columns_x_label.setMaximumSize(QtCore.QSize(45, 16777215))
          self.columns_x_label.setText('X Axis:')
          self.columns_y_label = QtGui.QLabel(self)
          self.columns_y_label.setMaximumSize(QtCore.QSize(45, 16777215))
          self.columns_y_label.setText('Y Axis:')
  
          self.columns_x = QtGui.QComboBox(self)
          self.columns_y = QtGui.QComboBox(self)
          for column in self.columns:
              self.columns_x.addItem(column)
              self.columns_y.addItem(column)
          self.columns_x.activated.connect(self.update_x_column)
          self.columns_y.activated.connect(self.update_y_column)
  
          self.plot_frame = PlotFrame(
              self.columns[0],
              self.columns[1],
              self.refresh_time,
              self.check_status
          )
          self.updated = self.plot_frame.updated
          self.plot = self.plot_frame.plot
          self.columns_x.setCurrentIndex(0)
          self.columns_y.setCurrentIndex(1)
  
      def _layout(self):
          vbox = QtGui.QVBoxLayout(self)
          vbox.setSpacing(0)
  
          hbox = QtGui.QHBoxLayout()
          hbox.setSpacing(10)
          hbox.setContentsMargins(-1, 6, -1, 6)
          hbox.addWidget(self.columns_x_label)
          hbox.addWidget(self.columns_x)
          hbox.addWidget(self.columns_y_label)
          hbox.addWidget(self.columns_y)
  
          vbox.addLayout(hbox)
          vbox.addWidget(self.plot_frame)
          self.setLayout(vbox)
  
      def sizeHint(self):
          return QtCore.QSize(300, 600)
  
      def new_curve(self, results, color=pg.intColor(0), **kwargs):
          if 'pen' not in kwargs:
              kwargs['pen'] = pg.mkPen(color=color, width=self.linewidth)
          if 'antialias' not in kwargs:
              kwargs['antialias'] = False
          curve = ResultsCurve(results,
                               x=self.plot_frame.x_axis,
                               y=self.plot_frame.y_axis,
                               **kwargs
                               )
          curve.setSymbol(None)
          curve.setSymbolBrush(None)
          return curve
  
      def update_x_column(self, index):
          axis = self.columns_x.itemText(index)
          self.plot_frame.change_x_axis(axis)
  
      def update_y_column(self, index):
          axis = self.columns_y.itemText(index)
          self.plot_frame.change_y_axis(axis)
  
      def load(self, curve):
          curve.x = self.columns_x.currentText()
          curve.y = self.columns_y.currentText()
          curve.update_data()
          self.plot.addItem(curve)
  
      def remove(self, curve):
          self.plot.removeItem(curve)
  
      def set_color(self, curve, color):
          """ Change the color of the pen of the curve """
          curve.pen.setColor(color)
          curve.updateItems(styleUpdate=True)
  