micropython-nano-gui/gui/demos/color15.py

# color15.py Test/demo program for larger displays. Cross-platform.
# Tested on Adafruit ssd1351-based OLED displays:
# Adafruit 1.5" 128*128 OLED display: https://www.adafruit.com/product/1431
# Adafruit 1.27" 128*96 display https://www.adafruit.com/product/1673
# For wiring details see drivers/ADAFRUIT.md in this repo.

# Released under the MIT License (MIT). See LICENSE.
# Copyright (c) 2018-2020 Peter Hinch

# Initialise hardware and framebuf before importing modules.
from color_setup import ssd  # Create a display instance

import cmath
import utime
import uos
from gui.core.writer import Writer, CWriter
from gui.core.nanogui import refresh
from gui.widgets.led import LED
from gui.widgets.meter import Meter
from gui.widgets.label import Label
from gui.widgets.dial import Dial, Pointer

# Fonts
import gui.fonts.arial10 as arial10
import gui.fonts.freesans20 as freesans20

from gui.core.colors import *

CWriter.set_textpos(ssd, 0, 0)  # In case previous tests have altered it
wri = CWriter(ssd, arial10, GREEN, BLACK, verbose=False)
wri.set_clip(True, True, False)

def meter():
    print('Meter test.')
    refresh(ssd, True)  # Clear any prior image
    color = lambda v : RED if v > 0.7 else YELLOW if v > 0.5 else GREEN
    txt = lambda v : 'ovr' if v > 0.7 else 'high' if v > 0.5 else 'ok'
    m0 = Meter(wri, 5, 2, divisions = 4, ptcolor=YELLOW,
              label='left', style=Meter.BAR, legends=('0.0', '0.5', '1.0'))
    l0 = LED(wri, ssd.height - 16 - wri.height, 2, bdcolor=YELLOW, label ='over')
    m1 = Meter(wri, 5, 50, divisions = 4, ptcolor=YELLOW,
              label='right', style=Meter.BAR, legends=('0.0', '0.5', '1.0'))
    l1 = LED(wri, ssd.height - 16 - wri.height, 50, bdcolor=YELLOW, label ='over')
    m2 = Meter(wri, 5, 98, divisions = 4, ptcolor=YELLOW,
              label='bass', style=Meter.BAR, legends=('0.0', '0.5', '1.0'))
    l2 = LED(wri, ssd.height - 16 - wri.height, 98, bdcolor=YELLOW, label ='over')
    steps = 10
    for n in range(steps):
        v = int.from_bytes(uos.urandom(3),'little')/16777216
        m0.value(v, color(v))
        l0.color(color(v))
        l0.text(txt(v), fgcolor=color(v))
        v = n/steps
        m1.value(v, color(v))
        l1.color(color(v))
        l1.text(txt(v), fgcolor=color(v))
        v = 1 - n/steps
        m2.value(v, color(v))
        l2.color(color(v))
        l2.text(txt(v), fgcolor=color(v))
        refresh(ssd)
        utime.sleep(1)


def multi_fields(t):
    print('Dynamic labels.')
    refresh(ssd, True)  # Clear any prior image
    nfields = []
    dy = wri.height + 6
    y = 2
    col = 15
    width = wri.stringlen('99.99')
    for txt in ('X:', 'Y:', 'Z:'):
        Label(wri, y, 0, txt)  # Use wri default colors
        nfields.append(Label(wri, y, col, width, bdcolor=None))  # Specify a border, color TBD
        y += dy

    end = utime.ticks_add(utime.ticks_ms(), t * 1000)
    while utime.ticks_diff(end, utime.ticks_ms()) > 0:
        for field in nfields:
            value = int.from_bytes(uos.urandom(3),'little')/167772
            overrange =  None if value < 70 else YELLOW if value < 90 else RED
            field.value('{:5.2f}'.format(value), fgcolor = overrange, bdcolor = overrange)
        refresh(ssd)
        utime.sleep(1)
    Label(wri, 0, 64, ' OK ', True, fgcolor = RED)
    refresh(ssd)
    utime.sleep(1)

def vari_fields():
    print('Variable label styles.')
    refresh(ssd, True)  # Clear any prior image
    wri_large = CWriter(ssd, freesans20, GREEN, BLACK, verbose=False)
    wri_large.set_clip(True, True, False)
    Label(wri_large, 0, 0, 'Text')
    Label(wri_large, 20, 0, 'Border')
    width = wri_large.stringlen('Yellow')
    lbl_text = Label(wri_large, 0, 65, width)
    lbl_bord = Label(wri_large, 20, 65, width)
    lbl_text.value('Red')
    lbl_bord.value('Red')
    lbl_var = Label(wri_large, 50, 2, '25.46', fgcolor=RED, bdcolor=RED)
    refresh(ssd)
    utime.sleep(2)
    lbl_text.value('Red')
    lbl_bord.value('Yellow')
    lbl_var.value(bdcolor=YELLOW)
    refresh(ssd)
    utime.sleep(2)
    lbl_text.value('Red')
    lbl_bord.value('None')
    lbl_var.value(bdcolor=False)
    refresh(ssd)
    utime.sleep(2)
    lbl_text.value('Yellow')
    lbl_bord.value('None')
    lbl_var.value(fgcolor=YELLOW)
    refresh(ssd)
    utime.sleep(2)
    lbl_text.value('Blue')
    lbl_bord.value('Green')
    lbl_var.value('18.99', fgcolor=BLUE, bdcolor=GREEN)
    Label(wri, ssd.height - wri.height - 2, 0, 'Done', fgcolor=RED)
    refresh(ssd)

def clock(x):
    print('Clock test.')
    refresh(ssd, True)  # Clear any prior image
    lbl = Label(wri, 5, 85, 'Clock')
    dial = Dial(wri, 5, 5, height = 75, ticks = 12, bdcolor=None, label=50)  # Border in fg color
    hrs = Pointer(dial)
    mins = Pointer(dial)
    hrs.value(0 + 0.7j, RED)
    mins.value(0 + 0.9j, YELLOW)
    dm = cmath.rect(1, -cmath.pi/30)  # Rotate by 1 minute (CW)
    dh = cmath.rect(1, -cmath.pi/1800)  # Rotate hours by 1 minute
    for n in range(x):
        refresh(ssd)
        utime.sleep_ms(200)
        mins.value(mins.value() * dm, YELLOW)
        hrs.value(hrs.value() * dh, RED)
        dial.text('ticks: {}'.format(n))
    lbl.value('Done')

def compass(x):
    print('Compass test.')
    refresh(ssd, True)  # Clear any prior image
    dial = Dial(wri, 5, 5, height = 75, bdcolor=None, label=50, style = Dial.COMPASS)
    bearing = Pointer(dial)
    bearing.value(0 + 1j, RED)
    dh = cmath.rect(1, -cmath.pi/30)  # Rotate by 6 degrees CW
    for n in range(x):
        utime.sleep_ms(200)
        bearing.value(bearing.value() * dh, RED)
        refresh(ssd)

print('Color display test is running.')
print('Test runs to completion: ~65 secs.')
clock(70)
compass(70)
meter()
multi_fields(t = 10)
vari_fields()
print('Test complete.')