primitivus: better popup sizing:

- showPopUp now takes absolute height and width, this makes more sense than the relative
  ones used before
- if height or width is not set, a default is used which depend of the type of the widget
  (it's smaller if the widget is a note)
- size is set to a low value for widget alerts
- size is bigger else

fix 324

sat_frontends/primitivus/primitivus

@@ -586,7 +586,7 @@ class PrimitivusApp(QuickApp, InputHistory):
         """
         popup = sat_widgets.Alert(title, message)
         popup.setCallback('ok', lambda dummy: self.removePopUp(popup))
-        self.showPopUp(popup)
+        self.showPopUp(popup, width=75, height=20)
         return popup
 
     def removePopUp(self, widget=None):
@@ -612,10 +612,24 @@ class PrimitivusApp(QuickApp, InputHistory):
         else:
             self.redraw()
 
-    def showPopUp(self, pop_up_widget, perc_width=40, perc_height=40, align='center', valign='middle'):
-        "Show a pop-up window if possible, else put it in queue"
+    def showPopUp(self, pop_up_widget, width=None, height=None, align='center',
+                  valign='middle'):
+        """Show a pop-up window if possible, else put it in queue
+
+        @param pop_up_widget: pop up to show
+        @param width(int, None): width of the popup
+            None to use default
+        @param height(int, None): height of the popup
+            None to use default
+        @param align: same as for [urwid.Overlay]
+        """
+        if width == None:
+            width = 75 if isinstance(pop_up_widget, xmlui.PrimitivusNoteDialog) else 135
+        if height == None:
+            height = 20 if isinstance(pop_up_widget, xmlui.PrimitivusNoteDialog) else 40
         if not isinstance(self.loop.widget, urwid.Overlay):
-            display_widget = urwid.Overlay(pop_up_widget, self.main_widget, align, ('relative', perc_width), valign, ('relative', perc_height))
+            display_widget = urwid.Overlay(
+                pop_up_widget, self.main_widget, align, width, valign, height)
             self.loop.widget = display_widget
             self.redraw()
         else: