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28 results

menu.py

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  • Forked from card10 / firmware
    Source project has a limited visibility.
    menu.py 3.35 KiB
    """
    Menu Script
    ===========
    You can customize this script however you want :)  If you want to go back to
    the default version, just delete this file; the firmware will recreate it on
    next run.
    """
    import buttons, color, display, os, ujson, sys
    
    def read_metadata(app_folder):
    	try:
    		info_file = "/apps/%s/metadata.json" % (app_folder)
    		with open(info_file) as f:
    			information = f.read()
    		return ujson.loads(information)
    	except BaseException as e:
    		sys.print_exception(e)
    		return {'author':'', 'name':app_folder, 'description':'', 'category':'', 'revision': 0}
    
    def list_apps():
        """Create a list of available apps."""    
        appFolders = sorted(os.listdir("/apps"))
        
        apps = []
        for appFolder in appFolders:
    		apps.append([appFolder, read_metadata(appFolder)])
    
        return apps
    
    
    def button_events():
        """Iterate over button presses (event-loop)."""
        yield 0
        button_pressed = False
        while True:
            v = buttons.read(buttons.BOTTOM_LEFT | buttons.BOTTOM_RIGHT | buttons.TOP_RIGHT)
    
            if v == 0:
                button_pressed = False
    
            if not button_pressed and v & buttons.BOTTOM_LEFT != 0:
                button_pressed = True
                yield buttons.BOTTOM_LEFT
    
            if not button_pressed and v & buttons.BOTTOM_RIGHT != 0:
                button_pressed = True
                yield buttons.BOTTOM_RIGHT
    
            if not button_pressed and v & buttons.TOP_RIGHT != 0:
                button_pressed = True
                yield buttons.TOP_RIGHT
    
    
    COLOR1, COLOR2 = (color.CHAOSBLUE_DARK, color.CHAOSBLUE)
    
    
    def draw_menu(disp, applist, idx, offset):
        disp.clear()
    
        # Wrap around the app-list and draw entries from idx - 3 to idx + 4
        for y, i in enumerate(range(len(applist) + idx - 3, len(applist) + idx + 4)):
            disp.print(
                " " + applist[i % len(applist)][1]['name'] + "      ",
                posy=offset + y * 20 - 40,
                bg=COLOR1 if i % 2 == 0 else COLOR2,
            )
    
        disp.print(">", posy=20, fg=color.COMMYELLOW, bg=COLOR2 if idx % 2 == 0 else COLOR1)
        disp.update()
    
    
    def main():
        disp = display.open()
        applist = list_apps()
        numapps = len(applist)
        current = 0
        for ev in button_events():
            if numapps == 0:
                disp.clear(color.COMMYELLOW)
                disp.print(
                    " No apps ",
                    posx=17,
                    posy=20,
                    fg=color.COMMYELLOW_DARK,
                    bg=color.COMMYELLOW,
                )
                disp.print(
                    "available",
                    posx=17,
                    posy=40,
                    fg=color.COMMYELLOW_DARK,
                    bg=color.COMMYELLOW,
                )
                disp.update()
                continue
    
            if ev == buttons.BOTTOM_RIGHT:
                # Scroll down
                draw_menu(disp, applist, current, -8)
                current = (current + 1) % numapps
            elif ev == buttons.BOTTOM_LEFT:
                # Scroll up
                draw_menu(disp, applist, current, 8)
                current = (current + numapps - 1) % numapps
            elif ev == buttons.TOP_RIGHT:
                # Select & start
                disp.clear().update()
                disp.close()
                try:
                    os.exec("/apps/%s/__init__.py" % applist[current][0])
                except OSError as e:
                    print("Loading failed: ", e)
                    os.exit(1)
    
            draw_menu(disp, applist, current, 0)
    
    
    if __name__ == "__main__":
        main()