stems.py

from vanilla import Window, EditText, TextBox
from defconAppKit.controls.fontInfoView import postscriptStemSnapToUFO, infoListFromUFO
from mojo.subscriber import Subscriber, WindowController, registerCurrentFontSubscriber

class Stems(Subscriber, WindowController):

    def build(self):
        self.w = Window((250, 70))
        self.w.vStemsControl = EditText((60, 10, -10, 20), callback=self.editVCallback)
        self.w.vStemsLabel   = TextBox((10, 10, -10, 17), "vStems")
        self.w.hStemsControl = EditText((60, 40, -10, 20), callback=self.editHCallback)
        self.w.hStemsLabel   = TextBox((10, 40, -10, 17), "hStems")
        
    def started(self):
        self.w.open()

    def currentFontDidSetFont(self, info):
        font = info["font"]
        if font is not None:
            self.font = font
            self.w.vStemsControl.set(infoListFromUFO(font.info.postscriptStemSnapV))
            self.w.hStemsControl.set(infoListFromUFO(font.info.postscriptStemSnapH))

    def editVCallback(self, sender):
        self.font.info.postscriptStemSnapV = postscriptStemSnapToUFO(sender.get())
        
    def editHCallback(self, sender):
        self.font.info.postscriptStemSnapH = postscriptStemSnapToUFO(sender.get())
        

registerCurrentFontSubscriber(Stems)