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wasp-os/tools/themer.py
kozova1 2624a6e998 Added basic theming engine.
This theming engine uses a bytestring (but supports anything indexable,
as long as the index results are a byte long),
stored as `wasp.system._theme`.
It has a default value, which should not change anything about the way this looks currently.

The theme can be set via `wasp.system.set_theme`,
but this should *ONLY* be used in `main.py`.
`wasp.system.set_theme` will return True if it was successful,
or False if the theme is of an old format.
Using an old format theme will *not* crash the watch,
but will use the default theme instead.

To theme this, one has to use tools/themer.py (use flag -h for complete explanation)
to generate a bytestring that's added in main.py (see diff).

The bytestring is then loaded into 'wasp.system._theme'.
Theme values can be looked up by apps by using `wasp.system.theme("theme-key")`.
Theme keys appear in the function body of `wasp.system.theme()`.

I've took the liberty of converting existing apps to use this method,
and it seems to work well.

A test theme is provided in `tools/test_theme.py`

Signed-off-by: kozova1 <mug66kk@gmail.com>
2020-12-13 16:51:07 +00:00

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Python
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#!/usr/bin/env python3
"""Compiles themes for wasp-os"""
from argparse import ArgumentParser, RawTextHelpFormatter
from importlib import import_module
from typing import Tuple
class DefaultTheme():
"""This represents the default theme.
Import this file and extend the Theme class, only changing the variables.
Export the resulting class as 'Theme'.
serialize() should NEVER be overriden!
"""
BLE_COLOR = 0x7bef
SCROLL_INDICATOR_COLOR = 0x7bef
BATTERY_CHARGING_COLOR = 0x7bef
SMALL_CLOCK_COLOR = 0xe73c
NOTIFICATION_COLOR = 0x7bef
ACCENT_MID = 0xb5b6
ACCENT_LO = 0xbdb6
ACCENT_HI = 0xffff
SLIDER_DEFAULT_COLOR = 0x39ff
def serialize(self) -> bytes:
"""Serializes the theme for use in wasp-os"""
def split_bytes(x: int) -> Tuple[int, int]:
return (x & 0xFF, (x >> 8) & 0xFF)
theme_bytes = bytes([
*split_bytes(self.BLE_COLOR),
*split_bytes(self.SCROLL_INDICATOR_COLOR),
*split_bytes(self.BATTERY_CHARGING_COLOR),
*split_bytes(self.SMALL_CLOCK_COLOR),
*split_bytes(self.NOTIFICATION_COLOR),
*split_bytes(self.ACCENT_MID),
*split_bytes(self.ACCENT_LO),
*split_bytes(self.ACCENT_HI),
*split_bytes(self.SLIDER_DEFAULT_COLOR),
])
return theme_bytes
if __name__ == '__main__':
parser = ArgumentParser(
description='''Compiles themes into a format understood by wasp-os.
The resulting string should be put in main.py like this:
theme_string = THEME_STRING_GOES_HERE
for the theme to take effect.
''',
epilog=''' To create a theme,
import this file and extend the DefaultTheme class, only changing the variables.
Export the resulting class as 'Theme'.
Example:
--------
theme.py:
from themer import DefaultTheme
class Theme(DefaultTheme):
BLE_ICON_COLOR = 0x041F
shell:
$ ./themer.py theme # NOTE: do not include .py at end of file!
> b'\xef{\xef{\xef{<\xe7\xef{\xb6\xb5\xb6\xbd\xff\xff\xff9'
main.py:
...
wasp.system.set_theme(b'\xef{\xef{\xef{<\xe7\xef{\xb6\xb5\xb6\xbd\xff\xff\xff9')
...
''',
formatter_class=RawTextHelpFormatter
)
parser.add_argument('input_file', type=str, nargs=1)
args = parser.parse_args()
theme = DefaultTheme()
theme = import_module(args.input_file[0]).Theme()
print(theme.serialize())