# Testing async form, see if can have a slider

# that adjusts the size of text displayed

import sys

if sys.version_info[0] >= 3:

import PySimpleGUI as sg

else:

import PySimpleGUI27 as sg

fontSize = 12

layout = [[sg.Spin([sz for sz in range(6, 172)], font=('Helvetica 20'), initial_value=fontSize, change_submits=True, key='spin'),

sg.Slider(range=(6,172), orientation='h', size=(10,20), change_submits=True, key='slider', font=('Helvetica 20')), sg.Text("Aa", size=(2, 1), font="Helvetica " + str(fontSize), key='text')]]

sz = fontSize

window = sg.Window("Font size selector", grab_anywhere=False)

window.Layout(layout)

while True:

event, values= window.Read()

if event is None or event == 'Quit':

break

sz_spin = int(values['spin'])

sz_slider = int(values['slider'])

sz = sz_spin if sz_spin != fontSize else sz_slider

if sz != fontSize:

fontSize = sz

font = "Helvetica " + str(fontSize)

window.FindElement('text').Update(font=font)

window.FindElement('slider').Update(sz)

window.FindElement('spin').Update(sz)

print("Done.")