fade-in/fade-out status bar

[https://me.yahoo.com/postrockrob#52e3a]

Somewhat like Google Chrome, get some screen real-estate back by having a pop-up status bar. This would allow the bottom of the frame to display text to the border.

To prevent unreadable text at the bottom, force the text to scroll when the cursor is approx 2 lines from the bottom -- this leaves the text at the bottom still usable while not overwriting stuff that the user is editing.

• what happens when minibuffer is around? Above or below minibuffer?

[https://me.yahoo.com/postrockrob#52e3a]

From Robin Dunn; the way to capture the menu item help text when a menu is selected is:

The mechanism used for displaying the menu help text in the status bar is event based, so you can just bind a handler for the EVT_MENU_HIGHLIGHT event in the frame to intercept that behavior and do your own thing instead.

[rob]

(In [2546]) Refs #814: added PopupStatusBar?

• added hooks in frame.py to create a popup status bar
• the regular status bar is still there, so this is a work in progress

[rob]

(In [2550]) Refs #814: fixes for mac

• use FakePopupWindow? instead of wx.PopupWindow?
• check for timer delays of less than 1 millisecond which fail on mac