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menu.py 8.42 KiB
"""
Menu Script
===========
You can customize this script however you want :) If you want to go back to
the default version, just delete this file; the firmware will recreate it on
next run.
"""
import buttons
import color
import display
import os
import utime
import ujson
import sys
BUTTON_TIMER_POPPED = -1
COLOR_BG = color.CHAOSBLUE_DARK
COLOR_BG_SEL = color.CHAOSBLUE
COLOR_ARROW = color.COMMYELLOW
COLOR_TEXT = color.COMMYELLOW
MAXCHARS = 11
HOMEAPP = "main.py"
def create_folders():
try:
os.mkdir("/apps")
except:
pass
def read_metadata(app_folder):
try:
info_file = "/apps/%s/metadata.json" % (app_folder)
with open(info_file) as f:
information = f.read()
return ujson.loads(information)
except Exception as e:
print("Failed to read metadata for %s" % (app_folder))
sys.print_exception(e)
return {
"author": "",
"name": app_folder,
"description": "",
"category": "",
"revision": 0,
}
def list_apps():
"""Create a list of available apps."""
apps = []
# add main application
for mainFile in os.listdir("/"):
if mainFile == HOMEAPP:
apps.append(
[
"/%s" % HOMEAPP,
{
"author": "card10badge Team",
"name": "Home",
"description": "",
"category": "",
"revision": 0,
},
]
)
dirlist = [
entry for entry in sorted(os.listdir("/apps")) if not entry.startswith(".")
]
# list all hatchary style apps (not .elf and not .py)
# with or without metadata.json
for appFolder in dirlist:
if not (appFolder.endswith(".py") or appFolder.endswith(".elf")):
metadata = read_metadata(appFolder)
if not metadata.get("bin", None):
fileName = "/apps/%s/__init__.py" % appFolder
else:
fileName = "/apps/%s/%s" % (appFolder, metadata["bin"])
apps.append([fileName, metadata])
# list simple python scripts
for pyFile in dirlist:
if pyFile.endswith(".py"):
apps.append(
[
"/apps/%s" % pyFile,
{
"author": "",
"name": pyFile,
"description": "",
"category": "",
"revision": 0,
},
]
)
# list simple elf binaries
for elfFile in dirlist:
if elfFile.endswith(".elf"):
apps.append(
[
"/apps/%s" % elfFile,
{
"author": "",
"name": elfFile,
"description": "",
"category": "",
"revision": 0,
},
]
)
return apps
def button_events(timeout=0):
"""Iterate over button presses (event-loop)."""
yield 0
button_pressed = False
count = 0
while True:
v = buttons.read(buttons.BOTTOM_LEFT | buttons.BOTTOM_RIGHT | buttons.TOP_RIGHT)
if timeout > 0 and count > 0 and count % timeout == 0:
yield BUTTON_TIMER_POPPED
if timeout > 0:
count += 1
if v == 0:
button_pressed = False
if not button_pressed and v & buttons.BOTTOM_LEFT != 0:
button_pressed = True
yield buttons.BOTTOM_LEFT
if not button_pressed and v & buttons.BOTTOM_RIGHT != 0:
button_pressed = True
yield buttons.BOTTOM_RIGHT
if not button_pressed and v & buttons.TOP_RIGHT != 0:
button_pressed = True
yield buttons.TOP_RIGHT
utime.sleep_ms(10)
def triangle(disp, x, y, left, scale=6, color=[255, 0, 0]):
"""Draw a triangle to show there's more text in this line"""
yf = 1 if left else -1
disp.line(x - scale * yf, int(y + scale / 2), x, y, col=color)
disp.line(x, y, x, y + scale, col=color)
disp.line(x, y + scale, x - scale * yf, y + int(scale / 2), col=color)
def draw_menu(disp, applist, pos, appcount, lineoffset):
disp.clear()
start = 0
if pos > 0:
start = pos - 1
if start + 4 > appcount:
start = appcount - 4
if start < 0:
start = 0
for i, app in enumerate(applist):
if i >= start + 4 or i >= appcount:
break
if i >= start:
disp.rect(
0,
(i - start) * 20,
159,
(i - start) * 20 + 20,
col=COLOR_BG_SEL if i == pos else COLOR_BG,
)
line = app[1]["name"]
linelength = len(line)
off = 0
# calc line offset for scrolling
if i == pos and linelength > (MAXCHARS - 1) and lineoffset > 0:
off = (
lineoffset
if lineoffset + (MAXCHARS - 1) < linelength
else linelength - (MAXCHARS - 1)
)
if lineoffset > linelength:
off = 0
disp.print(
" " + line[off : (off + (MAXCHARS - 1))],
posy=(i - start) * 20,
fg=COLOR_TEXT,
bg=COLOR_BG_SEL if i == pos else COLOR_BG,
)
if i == pos:
disp.print(">", posy=(i - start) * 20, fg=COLOR_ARROW, bg=COLOR_BG_SEL)
if linelength > (MAXCHARS - 1) and off < linelength - (MAXCHARS - 1):
triangle(disp, 153, (i - start) * 20 + 6, False, 6)
triangle(disp, 154, (i - start) * 20 + 7, False, 4)
triangle(disp, 155, (i - start) * 20 + 8, False, 2)
if off > 0:
triangle(disp, 24, (i - start) * 20 + 6, True, 6)
triangle(disp, 23, (i - start) * 20 + 7, True, 4)
triangle(disp, 22, (i - start) * 20 + 8, True, 2)
disp.update()
def main():
create_folders()
disp = display.open()
applist = list_apps()
numapps = len(applist)
current = 0
lineoffset = 0
timerscrollspeed = 1
timerstartscroll = 5
timercountpopped = 0
timerinactivity = 100
for ev in button_events(10):
if numapps == 0:
disp.clear(COLOR_BG)
disp.print(" No apps ", posx=17, posy=20, fg=COLOR_TEXT, bg=COLOR_BG)
disp.print("available", posx=17, posy=40, fg=COLOR_TEXT, bg=COLOR_BG)
disp.update()
continue
if ev == buttons.BOTTOM_RIGHT:
# Scroll down
current = (current + 1) % numapps
lineoffset = 0
timercountpopped = 0
elif ev == buttons.BOTTOM_LEFT:
# Scroll up
current = (current + numapps - 1) % numapps
lineoffset = 0
timercountpopped = 0
elif ev == BUTTON_TIMER_POPPED:
timercountpopped += 1
if (
timercountpopped >= timerstartscroll
and (timercountpopped - timerstartscroll) % timerscrollspeed == 0
):
lineoffset += 1
if applist[0][0] == "/%s" % HOMEAPP and timercountpopped >= timerinactivity:
print("Inactivity timer popped")
disp.clear().update()
disp.close()
try:
os.exec("/%s" % HOMEAPP)
except OSError as e:
print("Loading failed: ", e)
os.exit(1)
elif ev == buttons.TOP_RIGHT:
# Select & start
disp.clear().update()
disp.close()
try:
os.exec(applist[current][0])
except OSError as e:
print("Loading failed: ", e)
os.exit(1)
draw_menu(disp, applist, current, numapps, lineoffset)
if __name__ == "__main__":
try:
main()
except Exception as e:
sys.print_exception(e)
with display.open() as d:
d.clear(color.COMMYELLOW)
d.print("Menu", posx=52, posy=20, fg=color.COMMYELLOW_DARK, bg=color.COMMYELLOW)
d.print("crashed", posx=31, posy=40, fg=color.COMMYELLOW_DARK, bg=color.COMMYELLOW)
d.update()
utime.sleep(2)
os.exit(1)