# vtest.py Test/demo of Dial for micro-gui # Released under the MIT License (MIT). See LICENSE. # Copyright (c) 2021 Peter Hinch # Create SSD instance. Must be done first because of RAM use. import hardware_setup import urandom import time from cmath import rect, pi import uasyncio as asyncio from gui.core.ugui import Screen, ssd from gui.core.writer import CWriter from gui.fonts import font10 from gui.core.colors import * # Widgets from gui.widgets.label import Label from gui.widgets.buttons import Button, CloseButton from gui.widgets.dial import Pointer, Dial def fwdbutton(wri, row, col, cls_screen, text='Next'): def fwd(button): Screen.change(cls_screen) Button(wri, row, col, height = 30, callback = fwd, fgcolor = BLACK, bgcolor = GREEN, text = text, shape = RECTANGLE, width = 100) class BackScreen(Screen): def __init__(self): super().__init__() wri = CWriter(ssd, font10, GREEN, BLACK, verbose=False) Label(wri, 2, 2, 'Ensure back refreshes properly') CloseButton(wri) # Create a random vector. Interpolate between current vector and the new one. # Change pointer color dependent on magnitude. async def ptr_test(dial): ptr = Pointer(dial) v = 0j steps = 20 # No. of interpolation steps grv = lambda : urandom.getrandbits(16) / 2**15 - 1 # Random: range -1.0 to +1.0 while True: v1 = grv() + 1j * grv() # Random vector dv = (v1 - v) / steps # Interpolation vector for _ in range(steps): v += dv mag = abs(v) if mag < 0.3: ptr.value(v, BLUE) elif mag < 0.7: ptr.value(v, GREEN) else: ptr.value(v, RED) await asyncio.sleep_ms(200) # Analog clock demo. async def aclock(dial, lbldate, lbltim): uv = lambda phi : rect(1, phi) # Return a unit vector of phase phi days = ('Monday', 'Tuesday', 'Wednesday', 'Thursday', 'Friday', 'Saturday', 'Sunday') months = ('January', 'February', 'March', 'April', 'May', 'June', 'July', 'August', 'September', 'October', 'November', 'December') hrs = Pointer(dial) mins = Pointer(dial) secs = Pointer(dial) hstart = 0 + 0.7j # Pointer lengths. Position at top. mstart = 0 + 1j sstart = 0 + 1j while True: t = time.localtime() hrs.value(hstart * uv(-t[3] * pi/6 - t[4] * pi / 360), CYAN) mins.value(mstart * uv(-t[4] * pi/30), CYAN) secs.value(sstart * uv(-t[5] * pi/30), RED) lbltim.value('{:02d}.{:02d}.{:02d}'.format(t[3], t[4], t[5])) lbldate.value('{} {} {} {}'.format(days[t[6]], t[2], months[t[1] - 1], t[0])) await asyncio.sleep(1) class VScreen(Screen): def __init__(self): super().__init__() labels = {'bdcolor' : RED, 'fgcolor' : WHITE, 'bgcolor' : DARKGREEN, } wri = CWriter(ssd, font10, GREEN, BLACK, verbose=False) fwdbutton(wri, 200, 2, BackScreen, 'Forward') CloseButton(wri) # Set up random vector display with two pointers dial = Dial(wri, 2, 2, height = 100, ticks = 12, fgcolor = YELLOW, style=Dial.COMPASS) self.reg_task(ptr_test(dial)) self.reg_task(ptr_test(dial)) # Set up clock display: instantiate labels lbldate = Label(wri, 110, 2, 200, **labels) lbltim = Label(wri, 150, 2, 80, **labels) dial = Dial(wri, 2, 120, height = 100, ticks = 12, fgcolor = GREEN, pip = GREEN) self.reg_task(aclock(dial, lbldate, lbltim)) def test(): if ssd.height < 240 or ssd.width < 320: print(' This test requires a display of at least 320x240 pixels.') else: print('Testing micro-gui...') Screen.change(VScreen) test()