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@cclauss cclauss/KeyboardHack.py
Last active Jan 3, 2016

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KeyboardHack -- Just a proof of concept to prove that an on screen keyboard could be created in a Pythonista scene.Scene. Four keyboards are defined but only the first is implemented. Shift key not implemented. No number keys. Hard coded to iPad screen resolution, etc. Someone should make it an open source project on GitHub and curate changes (p…
# -*- coding: utf-8 -*-
import scene
keyboard_layouts = (
'''
q w e r t y u i o p del
a s d f g h j k l return
z x c v b n m , . shift
.?123 space .?123
''', '''
Q W E R T Y U I O P del
A S D F G H J K L return
Z X C V B N M , . shift
.?123 space .?123
''', '''
1 2 3 4 5 6 7 8 9 0 del
- / : ; ( ) $ & @ return
#+= undo . , ? ! ' " #+=
ABC space ABC
''', '''
[ ] { } # % ^ * + = del
_ \ | ~ < > € £ ¥ return
123 redo . , ? ! ' " 123
ABC space ABC
''')
def make_keyboards(keyboard_layouts = keyboard_layouts):
keyboards = []
for keyboard_layout in keyboard_layouts:
keyboard = []
for line in keyboard_layout.splitlines():
if line:
keyrow = []
for key in line.split():
keyrow.append(key)
keyboard.append(tuple(keyrow))
keyboard.reverse()
keyboards.append(tuple(keyboard))
return keyboards
for keyboard in make_keyboards():
for keyrow in keyboard:
for key in keyrow:
print(key),
print('')
print('')
class TextButton(scene.Button): # scene.Button is an undocumented class
def __init__(self, inSuperLayer, inRect, inText):
super(self.__class__, self).__init__(inRect, inText)
inSuperLayer.add_layer(self)
self.parent = inSuperLayer # needed to make button_pressed() work
self.text = ' ' if inText == 'space' else inText
self.action = self.button_pressed
def button_pressed(self):
self.parent.button_pressed(self.text)
class KeyboardHack(scene.Scene):
def __init__(self):
self.text = ''
scene.run(self)
def setup(self):
self.center = self.bounds.center()
pad = 4 # pixels between buttons
loc = scene.Point(pad, pad)
keyboard = make_keyboards()[0]
for keyrow in keyboard:
button_height = loc.x = pad
for key in keyrow:
width = 740 if key == 'space' else 89
key_button = TextButton(self, scene.Rect(loc[0], loc[1], width, 40), key)
loc.x += key_button.frame.w + pad
button_height = max(button_height, key_button.frame.h)
loc.y += button_height + pad
self.center.y += loc.y / 2 # move center up to compensate for keyboard
def button_pressed(self, button_text):
print('button_pressed({})'.format(button_text))
if len(button_text) == 1:
self.text += button_text
elif self.text:
if button_text == 'del':
self.text = self.text[:-1]
#print(self.text)
elif button_text == 'return':
self.user_entered_text()
def user_entered_text(self):
print('User entered: ' + self.text)
def draw(self):
scene.background(0.7, 0.7, 0.7) # grey
self.root_layer.update(self.dt)
self.root_layer.draw()
scene.text(self.text, font_size=40, x=self.center.x, y=self.center.y)
KeyboardHack()
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