keyboard.py

import base64
from scene import *
from PIL import Image

def load_keyboard(retina_display = False):
    kb_filename = "keyboard.png"
    if retina_display:
        kb_filename = "keyboard@2x.png"
    kb_image = load_image_file(kb_filename)
    if not kb_image:
        # File didn't load, assume it needs creation
        import ImageFile
        keyboard_b64 = 'iVBORw0KGgoAAAANSUhEUgAAAT4AAADGAgMAAAA24ARjAAAACVBMVEX///8AAAAAAP9'+\
                       'TU0bQAAAAq0lEQVR4Xu3YKw7DMBCGwSW935IQn64kxKes1EdIFUWNttK2mo+YWMMMfs'+\
                       'fyaBSdWQ9m3BtFZ3sQCAQCgUAgEAgE9t8ps7br/4JAYNXz+x5YtAC6g0AgEAgEAoFAI'+\
                       'PBndspx1igQuGydf4Jz3ZCsBzOeXc6vgbnGq+4gEAgEAoFAIBAI7L9TrNEPA/pz2BrL'+\
                       'Xsf3sh7MeGtk7HR8rzsIBAKBQCAQCAQC+++UG1ekEcXm6D5EAAAAAElFTkSuQmCC'
        keyboard_png = base64.b64decode(keyboard_b64)
        # Write out the 1x version
        parser = ImageFile.Parser()
        parser.feed(keyboard_png)
        kb_png = parser.close()
        kb_png.save("keyboard.png")
        orig_size   = list(kb_png.size)
        retina_size = map(lambda x: x*2, orig_size)
        kb_png.resize(retina_size)
        # Write out the 2x version
        kb_png.save("keyboard@2x.png")
        kb_image = load_image_file(kb_filename)
    return [kb_image, Image.open(kb_filename).size]

class MyScene (Scene):
    def setup(self):
        self.root_layer = Layer(self.bounds)
        self.retina_display = False
        if min(self.bounds.w, self.bounds.h) > 500:
            self.retina_display = True
        self.keyboard, self.kb_size = load_keyboard(self.retina_display)
        self.layer = Layer(Rect(0, 0, self.kb_size[0], self.kb_size[1]))
        self.layer.background = Color(0, 0, 0)
        self.layer.image = self.keyboard
        self.root_layer.add_layer(self.layer)
    
    def draw(self):
        background(0, 0, 0)
        self.root_layer.update(self.dt)
        self.root_layer.draw()
    
run(MyScene())