96 lines
2.5 KiB
Python
96 lines
2.5 KiB
Python
# SPDX-License-Identifier: LGPL-3.0-or-later
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# Copyright (C) 2020 Daniel Thompson
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"""Widget library
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~~~~~~~~~~~~~~~~~
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The widget library allows common fragments of logic and drawing code to be
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shared between applications.
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"""
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import icons
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import watch
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class BatteryMeter(object):
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"""Battery meter widget.
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A simple battery meter with a charging indicator, will draw at the
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top-right of the display.
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"""
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def __init__(self):
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self.level = -2
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def draw(self):
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"""Draw from meter (from scratch)."""
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self.level = -2
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self.update()
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def update(self):
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"""Update the meter.
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The update is lazy and won't redraw unless the level has changed.
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"""
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icon = icons.battery
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draw = watch.drawable
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if watch.battery.charging():
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if self.level != -1:
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draw.rleblit(icon, pos=(239-icon[0], 0), fg=0x7bef)
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self.level = -1
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else:
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level = watch.battery.level()
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if level == self.level:
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return
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if level > 96:
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h = 24
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rgb = 0x07e0
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else:
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h = level // 4
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green = level // 3
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red = 31-green
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rgb = (red << 11) + (green << 6)
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if (level > 5) ^ (self.level > 5):
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if level > 5:
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draw.rleblit(icon, pos=(239-icon[0], 0), fg=0x7bef)
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else:
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rgb = 0xf800
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draw.rleblit(icon, pos=(239-icon[0], 0), fg=0xf800)
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x = 239 - 30
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w = 16
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if 24 - h:
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draw.fill(0, x, 14, w, 24 - h)
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if h:
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draw.fill(rgb, x, 38 - h, w, h)
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self.level = level
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class ScrollIndicator():
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"""Scrolling indicator.
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A simple battery meter with a charging indicator, will draw at the
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top-right of the display.
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"""
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def __init__(self, x=240-18, y=240-24):
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self._pos = (x, y)
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self.up = True
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self.down = True
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def draw(self):
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"""Draw from scrolling indicator.
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For this simple widget :py:meth:`~.draw` is simply a synonym for
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:py:meth:`~.update`.
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"""
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self.update()
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def update(self):
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"""Update from scrolling indicator."""
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draw = watch.drawable
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if self.up:
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draw.rleblit(icons.up_arrow, pos=self._pos, fg=0x7bef)
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if self.down:
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draw.rleblit(icons.down_arrow, pos=(self._pos[0], self._pos[1] + 13), fg=0x7bef)
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