kopia lustrzana https://github.com/pimoroni/pimoroni-pico
156 wiersze
4.8 KiB
Python
156 wiersze
4.8 KiB
Python
# Tufty2040 boot menu/loader.
|
|
|
|
import gc
|
|
import time
|
|
from os import listdir
|
|
from picographics import PicoGraphics, DISPLAY_TUFTY_2040, PEN_RGB332
|
|
from pimoroni import Button
|
|
|
|
|
|
def hsv_to_rgb(h: float, s: float, v: float) -> tuple[float, float, float]:
|
|
if s == 0.0:
|
|
return v, v, v
|
|
i = int(h * 6.0)
|
|
f = (h * 6.0) - i
|
|
p = v * (1.0 - s)
|
|
q = v * (1.0 - s * f)
|
|
t = v * (1.0 - s * (1.0 - f))
|
|
v = int(v * 255)
|
|
t = int(t * 255)
|
|
p = int(p * 255)
|
|
q = int(q * 255)
|
|
i = i % 6
|
|
if i == 0:
|
|
return v, t, p
|
|
if i == 1:
|
|
return q, v, p
|
|
if i == 2:
|
|
return p, v, t
|
|
if i == 3:
|
|
return p, q, v
|
|
if i == 4:
|
|
return t, p, v
|
|
if i == 5:
|
|
return v, p, q
|
|
|
|
|
|
def get_applications() -> list[dict[str, str]]:
|
|
# fetch a list of the applications that are stored in the filesystem
|
|
applications = []
|
|
for file in listdir():
|
|
if file.endswith(".py") and file != "main.py":
|
|
# convert the filename from "something_or_other.py" to "Something Or Other"
|
|
# via weird incantations and a sprinkling of voodoo
|
|
title = " ".join([v[:1].upper() + v[1:] for v in file[:-3].split("_")])
|
|
|
|
applications.append(
|
|
{
|
|
"file": file,
|
|
"title": title
|
|
}
|
|
)
|
|
|
|
# sort the application list alphabetically by title and return the list
|
|
return sorted(applications, key=lambda x: x["title"])
|
|
|
|
|
|
def prepare_for_launch() -> None:
|
|
for k in locals().keys():
|
|
if k not in ("__name__",
|
|
"application_file_to_launch",
|
|
"gc"):
|
|
del locals()[k]
|
|
gc.collect()
|
|
|
|
|
|
def menu() -> str:
|
|
applications = get_applications()
|
|
|
|
button_up = Button(22, invert=False)
|
|
button_down = Button(6, invert=False)
|
|
button_a = Button(7, invert=False)
|
|
|
|
display = PicoGraphics(display=DISPLAY_TUFTY_2040, pen_type=PEN_RGB332)
|
|
display.set_backlight(1.0)
|
|
|
|
selected_item = 2
|
|
scroll_position = 2
|
|
target_scroll_position = 2
|
|
|
|
selected_pen = display.create_pen(255, 255, 255)
|
|
unselected_pen = display.create_pen(80, 80, 100)
|
|
background_pen = display.create_pen(50, 50, 70)
|
|
shadow_pen = display.create_pen(0, 0, 0)
|
|
|
|
while True:
|
|
t = time.ticks_ms() / 1000.0
|
|
|
|
if button_up.read():
|
|
target_scroll_position -= 1
|
|
target_scroll_position = target_scroll_position if target_scroll_position >= 0 else len(applications) - 1
|
|
|
|
if button_down.read():
|
|
target_scroll_position += 1
|
|
target_scroll_position = target_scroll_position if target_scroll_position < len(applications) else 0
|
|
|
|
if button_a.read():
|
|
# Wait for the button to be released.
|
|
while button_a.is_pressed:
|
|
time.sleep(0.01)
|
|
|
|
return applications[selected_item]["file"]
|
|
|
|
display.set_pen(background_pen)
|
|
display.clear()
|
|
|
|
scroll_position += (target_scroll_position - scroll_position) / 5
|
|
|
|
grid_size = 40
|
|
for y in range(0, 240 // grid_size):
|
|
for x in range(0, 320 // grid_size):
|
|
h = x + y + int(t * 5)
|
|
h = h / 50.0
|
|
r, g, b = hsv_to_rgb(h, 0.5, 1)
|
|
|
|
display.set_pen(display.create_pen(r, g, b))
|
|
display.rectangle(x * grid_size, y * grid_size, grid_size, grid_size)
|
|
|
|
# work out which item is selected (closest to the current scroll position)
|
|
selected_item = round(target_scroll_position)
|
|
|
|
for list_index, application in enumerate(applications):
|
|
distance = list_index - scroll_position
|
|
|
|
text_size = 4 if selected_item == list_index else 3
|
|
|
|
# center text horixontally
|
|
title_width = display.measure_text(application["title"], text_size)
|
|
text_x = int(160 - title_width / 2)
|
|
|
|
row_height = text_size * 5 + 20
|
|
|
|
# center list items vertically
|
|
text_y = int(120 + distance * row_height - (row_height / 2))
|
|
|
|
# draw the text, selected item brightest and with shadow
|
|
if selected_item == list_index:
|
|
display.set_pen(shadow_pen)
|
|
display.text(application["title"], text_x + 1, text_y + 1, -1, text_size)
|
|
|
|
text_pen = selected_pen if selected_item == list_index else unselected_pen
|
|
display.set_pen(text_pen)
|
|
display.text(application["title"], text_x, text_y, -1, text_size)
|
|
|
|
display.update()
|
|
|
|
|
|
# The application we will be launching. This should be ouronly global, so we can
|
|
# drop everything else.
|
|
application_file_to_launch = menu()
|
|
|
|
# Run whatever we've set up to.
|
|
# If this fails, we'll exit the script and drop to the REPL, which is
|
|
# fairly reasonable.
|
|
prepare_for_launch()
|
|
__import__(application_file_to_launch)
|