Opens a slick glyph preview for when you're working. Thanks Juan for the idea; RoboFont.com for the example code on which this is based

openGlyphPreviewWindow.py

# menuTitle : Open Glyph Preview Window

from vanilla import FloatingWindow
from mojo.glyphPreview import GlyphPreview
from mojo.roboFont import OpenWindow
from mojo.events import addObserver, removeObserver
from lib.tools.misc import rgbaToNSColor

class GlyphPreviewWindow:
    
    def __init__(self):
        
        self.w = FloatingWindow((600, 600), "Glyph Preview", minSize=(100, 100))
        ns = self.w.getNSWindow()
        ns.setBackgroundColor_(rgbaToNSColor((1, 1, 1, 1)))
        ns.setTitlebarAppearsTransparent_(True)
        ns.setTitlebarHeight_(24)
        
        self.w.preview = GlyphPreview((0, 0, 0, 0))
        
        self.w.bind("close", self.shutdown)
        self.w.open()
        
        addObserver(self, "showPreview", "draw")
        
    def showPreview(self, notification):
        g = notification['glyph']
        if g is not None:
            self.w.preview.setGlyph(g)
            
    def shutdown(self, window):
        removeObserver(self, "draw")
            
OpenWindow(GlyphPreviewWindow)