class LineListsWindow(UiLinelistsWindow):
def __init__(self, plot_window, parent=None):
super(LineListsWindow, self).__init__()
# Builds GUI
self._main_window = QMainWindow()
self.setupUi(self._main_window, str(plot_window))
# Request that line lists be read from wherever are they sources.
dispatch.on_request_linelists.emit()
self.buildViews(plot_window)
# Connect buttons to appropriate signals.
#
# Note that, for the Draw operation, we have to pass the table views to
# the handler, even though it would be better to handle the row selections
# all in here for the sake of encapsulation. This is so because this class
# is not a QWidget or one of its subclasses, thus it cannot implement a
# DispatchHandle signal handler.
self.draw_button.clicked.connect(lambda: dispatch.on_plot_linelists.
emit(table_views=self._table_views))
self.erase_button.clicked.connect(dispatch.on_erase_linelabels.emit)
self.dismiss_button.clicked.connect(
dispatch.on_dismiss_linelists_window.emit)
def buildViews(self, plot_window):
# Table views must be preserved in the instance so they can be
# passed to whoever is going to do the actual line list plotting.
# The plotting code must know which lines (table rows) are selected
# in each line list.
self._table_views = []
for linelist in plot_window.linelists:
table_model = LineListTableModel(linelist)
proxy = SortModel(table_model.getName())
proxy.setSourceModel(table_model)
if table_model.rowCount() > 0:
table_view = QTableView()
table_view.setModel(proxy)
# setting this to False will significantly speed up
# the loading of very large line lists. However, these
# lists are often jumbled in wavelength, and consequently
# difficult to read and use. It remains to be seen what
# would be the approach users will favor.
table_view.setSortingEnabled(True)
table_view.setSelectionBehavior(QAbstractItemView.SelectRows)
table_view.horizontalHeader().setStretchLastSection(True)
table_view.resizeColumnsToContents()
comments = linelist.meta['comments']
# this preserves the original sorting state
# of the list. Use zero to sort by wavelength
# on load. Doesn't seem to affect performance
# by much tough.
proxy.sort(-1, Qt.AscendingOrder)
pane = self._buildLinelistPane(table_view, comments)
self.tabWidget.addTab(pane, table_model.getName())
self._table_views.append(table_view)
def show(self):
self._main_window.show()
def hide(self):
self._main_window.hide()
def _buildLinelistPane(self, table, comments):
pane = QWidget()
layout = QVBoxLayout()
layout.setSizeConstraint(QLayout.SetMaximumSize)
info = QTextBrowser()
info.setMaximumHeight(100)
info.setAutoFillBackground(True)
info.setStyleSheet("background-color: rgb(230,230,230);")
for comment in comments:
info.append(comment)
layout.addWidget(info)
layout.addWidget(table)
pane.setLayout(layout)
return pane
