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MicroPythonOS/main.py
T
Thomas Farstrike 4201fc7876 Launcher works
2025-04-22 09:32:15 +02:00

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# GUI:
# Below works at https://sim.lvgl.io/v9.0/micropython/ports/webassembly/index.html
import time
# Constants
TFT_HOR_RES=320
TFT_VER_RES=240
NOTIFICATION_BAR_HEIGHT=24
BUTTON_WIDTH=100
BUTTON_HEIGHT=40
PADDING_TINY=5
PADDING_SMALL=10
PADDING_MEDIUM=20
PADDING_LARGE=40
DRAWER_ANIM_DURATION=300
SLIDER_MIN_VALUE=1
SLIDER_MAX_VALUE=100
SLIDER_DEFAULT_VALUE=100
OFFSET_WIFI_ICON = -60
OFFSET_BATTERY_ICON = -40
TIME_UPDATE_INTERVAL = 1000
# Color palette
DARKPINK = lv.color_hex(0xEC048C)
MEDIUMPINK = lv.color_hex(0xF480C5)
LIGHTPINK = lv.color_hex(0xF9E9F2)
DARKYELLOW = lv.color_hex(0xFBDC05)
LIGHTYELLOW = lv.color_hex(0xFBE499)
PUREBLACK = lv.color_hex(0x000000)
COLOR_DRAWER_BG=MEDIUMPINK
COLOR_TEXT_WHITE=LIGHTPINK
COLOR_NOTIF_BAR_BG = DARKPINK
COLOR_DRAWER_BUTTON_BG=DARKYELLOW
COLOR_DRAWER_BUTTONTEXT=PUREBLACK
COLOR_SLIDER_BG=LIGHTPINK
COLOR_SLIDER_KNOB=DARKYELLOW
COLOR_SLIDER_INDICATOR=LIGHTPINK
drawer=None
wifi_screen=None
drawer_open=False
scr = lv.screen_active()
scr.set_style_bg_color(lv.color_hex(0x000000), 0)
def open_drawer():
global drawer_open
if not drawer_open:
drawer.set_y(NOTIFICATION_BAR_HEIGHT)
drawer_open=True
def close_drawer():
global drawer_open
if drawer_open:
drawer.set_y(-TFT_VER_RES+NOTIFICATION_BAR_HEIGHT)
drawer_open=False
def toggle_drawer(event):
global drawer_open
if drawer_open:
close_drawer()
else:
open_drawer()
# Create notification bar object
notification_bar = lv.obj(lv.screen_active())
notification_bar.set_style_bg_color(COLOR_NOTIF_BAR_BG, 0)
notification_bar.set_size(320, NOTIFICATION_BAR_HEIGHT)
notification_bar.set_pos(0, 0)
notification_bar.set_scrollbar_mode(lv.SCROLLBAR_MODE.OFF)
notification_bar.set_scroll_dir(lv.DIR.VER)
notification_bar.set_style_border_width(0, 0)
notification_bar.set_style_radius(0, 0)
# Time label
time_label = lv.label(notification_bar)
time_label.set_text("12:00")
time_label.align(lv.ALIGN.LEFT_MID, PADDING_TINY, 0)
time_label.set_style_text_color(COLOR_TEXT_WHITE, 0)
# Notification icon (bell)
notif_icon = lv.label(notification_bar)
notif_icon.set_text(lv.SYMBOL.BELL)
notif_icon.align_to(time_label, lv.ALIGN.OUT_RIGHT_MID, PADDING_LARGE, 0)
notif_icon.set_style_text_color(COLOR_TEXT_WHITE, 0)
# WiFi icon
wifi_icon = lv.label(notification_bar)
wifi_icon.set_text(lv.SYMBOL.WIFI)
wifi_icon.align(lv.ALIGN.RIGHT_MID, OFFSET_WIFI_ICON, 0)
wifi_icon.set_style_text_color(COLOR_TEXT_WHITE, 0)
# Battery icon
battery_icon = lv.label(notification_bar)
battery_icon.set_text(lv.SYMBOL.BATTERY_FULL)
battery_icon.align(lv.ALIGN.RIGHT_MID, OFFSET_BATTERY_ICON, 0)
battery_icon.set_style_text_color(COLOR_TEXT_WHITE, 0)
# Battery percentage
battery_label = lv.label(notification_bar)
battery_label.set_text("100%")
battery_label.align(lv.ALIGN.RIGHT_MID, 0, 0)
battery_label.set_style_text_color(COLOR_TEXT_WHITE, 0)
# Timer to update time every second
def update_time(timer):
ticks = time.ticks_ms()
hours = (ticks // 3600000) % 24
minutes = (ticks // 60000) % 60
seconds = (ticks // 1000) % 60
time_label.set_text(f"{hours:02d}:{minutes:02d}:{seconds:02d}")
lv.timer_create(update_time, TIME_UPDATE_INTERVAL, None)
notification_bar.add_event_cb(toggle_drawer, lv.EVENT.CLICKED, None)
# Subwindow is created before drawer so that drawer is on top
screen = lv.screen_active()
subwindow = lv.obj(screen)
subwindow.set_size(TFT_HOR_RES, TFT_VER_RES - NOTIFICATION_BAR_HEIGHT)
subwindow.set_pos(0, NOTIFICATION_BAR_HEIGHT)
subwindow.set_style_border_width(0, 0)
subwindow.set_style_pad_all(0, 0)
def create_drawer():
global drawer,wifi_screen
drawer=lv.obj(lv.screen_active())
drawer.set_size(TFT_HOR_RES,TFT_VER_RES-NOTIFICATION_BAR_HEIGHT)
drawer.set_pos(0,-TFT_VER_RES+NOTIFICATION_BAR_HEIGHT)
drawer.set_style_bg_color(COLOR_DRAWER_BG,0)
drawer.set_scroll_dir(lv.DIR.NONE)
slider=lv.slider(drawer)
slider.set_range(SLIDER_MIN_VALUE,SLIDER_MAX_VALUE)
slider.set_value(SLIDER_DEFAULT_VALUE,False)
slider.set_width(TFT_HOR_RES-PADDING_LARGE)
slider.align(lv.ALIGN.TOP_MID,0,PADDING_SMALL)
slider.set_style_bg_color(COLOR_SLIDER_BG,lv.PART.MAIN)
slider.set_style_bg_color(COLOR_SLIDER_INDICATOR,lv.PART.INDICATOR)
slider.set_style_bg_color(COLOR_SLIDER_KNOB,lv.PART.KNOB)
slider_label=lv.label(drawer)
slider_label.set_text(f"{SLIDER_DEFAULT_VALUE}%")
slider_label.set_style_text_color(COLOR_TEXT_WHITE,0)
slider_label.align_to(slider,lv.ALIGN.OUT_TOP_MID,0,-5)
def slider_event(e):
value=slider.get_value()
slider_label.set_text(f"{value}%")
display.set_backlight(value)
slider.add_event_cb(slider_event,lv.EVENT.VALUE_CHANGED,None)
wifi_btn=lv.button(drawer)
wifi_btn.set_size(BUTTON_WIDTH,BUTTON_HEIGHT)
wifi_btn.align(lv.ALIGN.LEFT_MID,PADDING_SMALL,0)
wifi_btn.set_style_bg_color(COLOR_DRAWER_BUTTON_BG,0)
wifi_label=lv.label(wifi_btn)
wifi_label.set_text(lv.SYMBOL.WIFI+" WiFi")
wifi_label.center()
wifi_label.set_style_text_color(COLOR_DRAWER_BUTTONTEXT,0)
def wifi_event(e):
global drawer_open
#wifi_screen.set_y(0) # TODO: make this
close_drawer()
drawer_open=False
wifi_btn.add_event_cb(wifi_event,lv.EVENT.CLICKED,None)
#
settings_btn=lv.button(drawer)
settings_btn.set_size(BUTTON_WIDTH,BUTTON_HEIGHT)
settings_btn.align(lv.ALIGN.RIGHT_MID,-PADDING_SMALL,0)
settings_btn.set_style_bg_color(COLOR_DRAWER_BUTTON_BG,0)
settings_label=lv.label(settings_btn)
settings_label.set_text(lv.SYMBOL.SETTINGS+" Settings")
settings_label.center()
settings_label.set_style_text_color(COLOR_DRAWER_BUTTONTEXT,0)
def settings_event(e):
global drawer_open
close_drawer()
drawer_open=False
settings_btn.add_event_cb(settings_event,lv.EVENT.CLICKED,None)
#
launcher_btn=lv.button(drawer)
launcher_btn.set_size(BUTTON_WIDTH,BUTTON_HEIGHT)
launcher_btn.align(lv.ALIGN.BOTTOM_LEFT,PADDING_SMALL,0)
launcher_btn.set_style_bg_color(COLOR_DRAWER_BUTTON_BG,0)
launcher_label=lv.label(launcher_btn)
launcher_label.set_text(lv.SYMBOL.HOME+" Launcher")
launcher_label.center()
launcher_label.set_style_text_color(COLOR_DRAWER_BUTTONTEXT,0)
def launcher_event(e):
print("Launcher button pressed!")
global drawer_open
close_drawer()
drawer_open=False
run_app(launcher_script,False)
launcher_btn.add_event_cb(launcher_event,lv.EVENT.CLICKED,None)
#
restart_btn=lv.button(drawer)
restart_btn.set_size(BUTTON_WIDTH,BUTTON_HEIGHT)
restart_btn.align(lv.ALIGN.BOTTOM_RIGHT,-PADDING_SMALL,0)
restart_btn.set_style_bg_color(COLOR_DRAWER_BUTTON_BG,0)
restart_label=lv.label(restart_btn)
restart_label.set_text(lv.SYMBOL.POWER+" Reset")
restart_label.center()
restart_label.set_style_text_color(COLOR_DRAWER_BUTTONTEXT,0)
def launcher_event(e):
print("Reset button pressed!")
global drawer_open
close_drawer()
drawer_open=False
run_app(launcher_script,False)
restart_btn.add_event_cb(lambda event: machine.reset(),lv.EVENT.CLICKED,None)
create_drawer()
# uasyncio and _thread aren't available on web
import _thread
# Function to execute the child script as a coroutine
def execute_script(script_source, is_file, lvgl_obj, return_to_launcher):
thread_id = _thread.get_ident();
print(f"Thread {thread_id}: executing script")
try:
script_globals = {
'lv': lv,
'subwindow': lvgl_obj,
'run_app': run_app,
'app1_script': app1_script,
'app2_script': app2_script
}
if is_file:
print(f"Thread {thread_id}: reading script from file: {script_source}")
with open(script_source, 'r') as f:
script_source = f.read()
print(f"Thread {thread_id}: starting script")
exec(script_source, script_globals)
print(f"Thread {thread_id}: script finished")
if return_to_launcher:
print(f"Thread {thread_id}: running launcher_script")
run_app(launcher_script,False,False)
except Exception as e:
print(f"Thread {thread_id}: error ", e)
def run_app(scriptname,is_file,return_to_launcher=True):
gc.collect()
print("Free memory before starting new script thread:", gc.mem_free())
try:
subwindow.clean()
# 168KB maximum at startup but 136KB after loading display, drivers, LVGL gui etc so let's go for 128KB for now, still a lot...
# But then no additional threads can be created. So 32KB seems like a good balance, allowing for 4 threads in apps...
#_thread.stack_size(32768)
_thread.stack_size(16384)
_thread.start_new_thread(execute_script, (scriptname, False, subwindow, return_to_launcher))
print("Event loop started in background thread")
except Exception as e:
print("Error starting event loop thread:", e)
# app1: updates label, adds button and slider
app1_script = """
import time
print("Child coroutine: Creating UI")
# Label
label = lv.label(subwindow)
label.set_text("App1: 0")
label.align(lv.ALIGN.TOP_MID, 0, 10)
# Button
button = lv.button(subwindow)
button.set_size(100, 60)
button.align(lv.ALIGN.CENTER, 0, 0)
button_label = lv.label(button)
button_label.set_text("Quit")
button_label.center()
# Slider
slider = lv.slider(subwindow)
slider.set_range(0, 100)
slider.set_value(50, lv.ANIM.OFF)
slider.align(lv.ALIGN.BOTTOM_MID, 0, -30)
# Quit flag
should_continue = True
# Button callback
def button_cb(e):
global should_continue
print("Quit button clicked, exiting child")
should_continue = False
button.add_event_cb(button_cb, lv.EVENT.CLICKED, None)
# Slider callback
def slider_cb(e):
value = slider.get_value()
#print("Child slider value:", value)
slider.add_event_cb(slider_cb, lv.EVENT.VALUE_CHANGED, None)
# Update loop
count = 0
while should_continue:
count += 1
#print("Child coroutine: Updating label to", count)
label.set_text(f"App1: {count}")
time.sleep_ms(100) # shorter makes it more responive to the quit button
print("Child coroutine: Exiting")
"""
app2_script = """
import time
import _thread
print("App2 running")
# Quit flag
should_continue = True
canary = lv.obj(subwindow)
canary.add_flag(0x0001) # LV_OBJ_FLAG_HIDDEN is 0x0001 (don't know why I can't find it!)
def app2_thread():
count=0
while should_continue and canary.get_class():
print(f"app2_thread: thread_id {_thread.get_ident()} - {count}")
count+=1
time.sleep(1)
_thread.start_new_thread(app2_thread, ())
# Label
label = lv.label(subwindow)
label.set_text("App2: 0")
label.align(lv.ALIGN.TOP_MID, 0, 10)
# Button
button = lv.button(subwindow)
button.set_size(100, 60)
button.align(lv.ALIGN.CENTER, 0, 0)
button_label = lv.label(button)
button_label.set_text("Quit")
button_label.center()
# Slider
slider = lv.slider(subwindow)
slider.set_range(0, 100)
slider.set_value(50, lv.ANIM.OFF)
slider.align(lv.ALIGN.BOTTOM_MID, 0, -30)
# Button callback
def button_cb(e):
global should_continue
print("Quit button clicked, exiting child")
should_continue = False
button.add_event_cb(button_cb, lv.EVENT.CLICKED, None)
# Slider callback
def slider_cb(e):
value = slider.get_value()
#print("Child slider value:", value)
slider.add_event_cb(slider_cb, lv.EVENT.VALUE_CHANGED, None)
# Update loop
count = 0
while should_continue:
count += 1
#print("Child coroutine: Updating label to", count)
label.set_text(f"App2: {count}")
time.sleep_ms(1000) # shorter makes it more responive to the quit button
print("Child coroutine: Exiting")
"""
launcher_script = """
print("Launcher script running")
app1_button = lv.button(subwindow)
app1_button.set_size(120, 40)
app1_button.align(lv.ALIGN.LEFT_MID, 20, 0)
app1_button_label = lv.label(app1_button)
app1_button_label.set_text("Start App 1")
app1_button_label.center()
app1_button.add_event_cb(lambda event: run_app(app1_script,False), lv.EVENT.CLICKED, None)
app2_button = lv.button(subwindow)
app2_button.set_size(120, 40)
app2_button.align(lv.ALIGN.RIGHT_MID, -20, 0)
app2_button_label = lv.label(app2_button)
app2_button_label.set_text("Start App 2")
app2_button_label.center()
app2_button.add_event_cb(lambda event: run_app(app2_script,False), lv.EVENT.CLICKED, None)
print("Launcher script exiting")
"""
#run_app(launcher_script,False,False)
run_app("/launcher.py",True,False)
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