APLKeyboard.py

import ui
import keyboard

layout1 = '`1234567890qwertyuiopasdfghjklzxcvbnm,.'
layout2 = '⋄¨¯<≤=≥>≠∨∧ ⍵∊⍴~↑↓⍳○*⍺⌈⌊_∇∆∘\'⎕⊂⊃∩∪⊥⊤|⍪⍠'
layout3 = '⍬!@#$%^&*() /\\⌿⍀←→{}⍞×÷≡≢⌹\'"[]-+⍎⍕⊣⊢;:?'
layout1s = '~1234567890QWERTYUIOPASDFGHJKLZXCVBNM!?'
layout2s = '⌺⌶⍫⍒⍋⌽⍉⊖⍟⍱⍲ ⍹⍷⍴⍨←→⍸⍥⍣⍶⌈⌊⍛⍢⍙⍤⌸⌷⊆⊇∩∪⊣⊢∥⍝⍠'

layoutNames = ['ABC','⍺⍴⍳','⍬+≡']
keybg = '#8c7052'
brdbg = '#232323'
tint  = '#ffffff'
shftkey  = ['⇧','⇪']

class APLKeyboardView( ui.View ):
	def __init__(self,*a,**kw):
		super().__init__(*a,**kw)
		self.background_color = brdbg
		self.tint_color = tint

		self.shift = False
		self.shiftLock = False
		self.layouts = [[layout1,layout2,layout3],
										[layout1s,layout2s,layout3]]
		self.layout = 0
		self.layoutTrans = [[1,0,1],
												[2,2,0]]

	def did_load(self):
		self.setKeyLayout()

		for i in range(len(layout1)):
			self[f'b{i}'].action = self.out_action
			self[f'b{i}'].background_color = keybg

		#self['space'].action = self.out_action

		for side in 'lr':
			self[f'shft{side}'].action = self.shft_action
			self[f'alt{side}'].action  = self.alt_action
			self[f'shft{side}'].background_color = keybg
			self[f'alt{side}'].background_color  = keybg


		self['go'].action   = self.go_action
		self['go'].background_color   = keybg
		#self['bksp'].action = self.bksp_action
		#self['down'].action = self.down_action

	def setKeyLayout(self):
		shft = 1 if (self.shiftLock or self.shift) else 0
		layout = self.layouts[shft][self.layout]
		for i in range(len(layout1)):
			self[f'b{i}'].title = layout[i]
			self.setAltLabels()
		for side in 'lr':
			self[f'shft{side}'].title = shftkey[self.shiftLock]

	def out_action(self,sender):
		text = sender.title
		self.shift = False
		self.setKeyLayout()
		if keyboard.is_keyboard():
			keyboard.play_input_click()
			keyboard.insert_text(text)
		else:
			print('Keyboard input:', text)

	def bksp_action(self,sender):
		keyboard.backspace(times=1)

	def shft_action(self,sender):
		if self.shift:
			if not self.shiftLock:
				self.shiftLock = True
			else:
				self.shiftLock = self.shift = False
		elif self.shiftLock:
			self.shiftLock = False
		else:
			self.shift = True

		self.setKeyLayout()

	def down_action(self,sender):
		pass

	def go_action(self,sender):
		text = '\n'
		if keyboard.is_keyboard():
			keyboard.play_input_click()
			keyboard.insert_text(text)
		else:
			print('Keyboard input:', text)

	def alt_action(self,sender):
		side = 0 if sender.name[-1] == 'l' else 1
		trans = self.layoutTrans
		self.layout = trans[side][self.layout]

		# reset shift state when changing layouts
		self.shift     = False
		self.shiftLock = False
		self.setKeyLayout()

	def setAltLabels(self):
		nxtl,nxtr = list(zip(*self.layoutTrans))[self.layout]
		self['altl'].title = layoutNames[nxtl]
		self['altr'].title = layoutNames[nxtr]

def main():
	#v = CharsView(frame = (0, 0, 320, 40))
	#if keyboard.is_keyboard():
	#	keyboard.set_view(v, 'current')
	v = ui.load_view('APLKeyboard.pyui')
	if keyboard.is_keyboard():
			keyboard.set_view(v, 'expanded')
	else:
		# For debugging in the main app:
		v.name = 'APLKeyboardView'
		v.present('sheet')

if __name__ == '__main__':
	main()