kopia lustrzana https://github.com/peterhinch/micropython-micro-gui
120 wiersze
3.9 KiB
Python
120 wiersze
3.9 KiB
Python
# vtest.py Test/demo of Dial for micro-gui
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# Released under the MIT License (MIT). See LICENSE.
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# Copyright (c) 2021 Peter Hinch
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# Create SSD instance. Must be done first because of RAM use.
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import hardware_setup
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import urandom
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import time
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from cmath import rect, pi
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import uasyncio as asyncio
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from gui.core.ugui import Screen, ssd
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from gui.core.writer import CWriter
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from gui.fonts import font10
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from gui.core.colors import *
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# Widgets
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from gui.widgets import Label, Button, CloseButton, Pointer, Dial
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def fwdbutton(wri, row, col, cls_screen, text='Next'):
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def fwd(button):
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Screen.change(cls_screen)
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Button(wri, row, col, height = 30, callback = fwd, fgcolor = BLACK, bgcolor = GREEN,
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text = text, shape = RECTANGLE, width = 100)
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class BackScreen(Screen):
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def __init__(self):
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super().__init__()
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wri = CWriter(ssd, font10, GREEN, BLACK, verbose=False)
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Label(wri, 2, 2, 'Ensure back refreshes properly')
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CloseButton(wri)
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# Update a pointer with a vector. Change pointer color dependent on magnitude.
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def vset(ptr, v):
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mag = abs(v)
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if mag < 0.3:
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ptr.value(v, BLUE)
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elif mag < 0.7:
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ptr.value(v, GREEN)
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else:
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ptr.value(v, RED)
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def get_vec(): # Return a random vector
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mag = urandom.getrandbits(16) / 2**16 # 0..1 (well, almost 1)
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phi = pi * urandom.getrandbits(16) / 2**15 # 0..2*pi
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return rect(mag, phi)
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async def ptr_test(dial):
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ptr0 = Pointer(dial)
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ptr1 = Pointer(dial)
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steps = 20 # No. of interpolation steps
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while True:
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dv0 = (get_vec() - ptr0.value()) / steps # Interpolation vectors
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dv1 = (get_vec() - ptr1.value()) / steps
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for _ in range(steps):
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vset(ptr0, ptr0.value() + dv0)
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vset(ptr1, ptr1.value() + dv1)
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await asyncio.sleep_ms(200)
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# Analog clock demo.
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async def aclock(dial, lbldate, lbltim):
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uv = lambda phi : rect(1, phi) # Return a unit vector of phase phi
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days = ('Monday', 'Tuesday', 'Wednesday', 'Thursday', 'Friday', 'Saturday',
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'Sunday')
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months = ('January', 'February', 'March', 'April', 'May', 'June', 'July',
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'August', 'September', 'October', 'November', 'December')
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hrs = Pointer(dial)
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mins = Pointer(dial)
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secs = Pointer(dial)
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hstart = 0 + 0.7j # Pointer lengths. Position at top.
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mstart = 0 + 1j
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sstart = 0 + 1j
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while True:
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t = time.localtime()
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# Maths rotates vectors counterclockwise, hence - signs.
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hrs.value(hstart * uv(-t[3] * pi/6 - t[4] * pi / 360), CYAN)
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mins.value(mstart * uv(-t[4] * pi/30), CYAN)
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secs.value(sstart * uv(-t[5] * pi/30), RED)
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lbltim.value('{:02d}.{:02d}.{:02d}'.format(t[3], t[4], t[5]))
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lbldate.value('{} {} {} {}'.format(days[t[6]], t[2], months[t[1] - 1], t[0]))
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await asyncio.sleep(1)
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class VScreen(Screen):
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def __init__(self):
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super().__init__()
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labels = {'bdcolor' : RED,
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'fgcolor' : WHITE,
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'bgcolor' : DARKGREEN,
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}
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wri = CWriter(ssd, font10, GREEN, BLACK, verbose=False)
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fwdbutton(wri, 200, 2, BackScreen, 'Forward')
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CloseButton(wri)
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# Set up random vector display with two pointers
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dial = Dial(wri, 2, 2, height = 100, ticks = 12, fgcolor = YELLOW, style=Dial.COMPASS)
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self.reg_task(ptr_test(dial))
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# Set up clock display: instantiate labels
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gap = 4
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lbldate = Label(wri, dial.mrow + gap, 2, 200, **labels)
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lbltim = Label(wri, lbldate.mrow + gap, 2, 80, **labels)
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dial = Dial(wri, 2, 120, height = 100, ticks = 12, fgcolor = GREEN, pip = GREEN)
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self.reg_task(aclock(dial, lbldate, lbltim))
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def test():
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if ssd.height < 240 or ssd.width < 320:
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print(' This test requires a display of at least 320x240 pixels.')
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else:
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print('Testing micro-gui...')
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Screen.change(VScreen)
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test()
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