Changed DRL window type to main window

* solves the annoying default button Qt5 feature

prasopes/__main__.py

@@ -83,7 +83,7 @@ def main():
     main_window.menuBar().addMenu(tools_menu)
     tools_menu.addAction('&TSQ zce', lambda: zce.dialog(
         main_window, ds, filename), QtCore.Qt.CTRL + QtCore.Qt.Key_T)
-    tools_menu.addAction('&DRL..', lambda: drl.dialog(
+    tools_menu.addAction('&DRL..', lambda: drl.main_window(
         main_window, ds, filename, drlcache),
         QtCore.Qt.CTRL + QtCore.Qt.Key_D)
 

prasopes/drltools.py

@@ -325,14 +325,19 @@ def export_drlspectrum(parent, fn, ptable, dtable, ds):
         expf.close()
 
 
-def dialog(parent, ds, filename, cache):
+def main_window(parent, ds, filename, cache):
     """constructs a dialog window"""
-
-    def savecache(cache,pt,dt,canvas):
+    def saveonclose(window, event, cache,pt,dt,canvas):
         cache[0], cache[1], cache[2] = pt, dt, canvas
+        QtWidgets.QMainWindow.closeEvent(window, event)
 
-    dial_widget = QtWidgets.QDialog(
+    main_window = QtWidgets.QMainWindow(
         parent, windowTitle='Delayed reactant labelling')
+    dial_widget = QtWidgets.QWidget(main_window)
+    main_window.setCentralWidget(dial_widget)
+
+    main_window.closeEvent = lambda event: saveonclose(
+        main_window, event, cache, pt, dt, graph_canvas)
 
     dial_graph = Figure(figsize=(5, 2), dpi=100, facecolor="None")
     chromplot = dial_graph.add_subplot(111, facecolor=(1, 1, 1, 0.8))
@@ -381,8 +386,7 @@ def dialog(parent, ds, filename, cache):
         pt, dt, dial_widget))
     drl_export.clicked.connect(lambda: export_drlspectrum(
         dial_widget, filename, pt, dt, ds))
-    dial_widget.finished.connect(lambda: savecache(
-        cache, pt, dt, graph_canvas))
+
 
     main_layout = QtWidgets.QVBoxLayout(dial_widget)
     sub_layout = QtWidgets.QHBoxLayout()
@@ -413,4 +417,4 @@ def dialog(parent, ds, filename, cache):
     tablelayout.addWidget(QtWidgets.QLabel("Corrected ions table:"))
     tablelayout.addWidget(dt)
 
-    dial_widget.show()
+    main_window.show()