kopia lustrzana https://github.com/peterhinch/micropython-nano-gui
60 wiersze
2.0 KiB
Python
60 wiersze
2.0 KiB
Python
# clock.py Analog clock widget for nanogui
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# Released under the MIT License (MIT). See LICENSE.
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# Copyright (c) 2023 Peter Hinch
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from gui.core.nanogui import DObject
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from gui.widgets.dial import Dial, Pointer
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from gui.core.colors import *
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from cmath import rect, pi
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class Clock(DObject):
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def __init__(
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self,
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writer,
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row,
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col,
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height,
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fgcolor=None,
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bgcolor=None,
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bdcolor=RED,
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pointers=(CYAN, CYAN, RED),
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label=None,
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):
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super().__init__(writer, row, col, height, height, fgcolor, bgcolor, bdcolor)
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dial = Dial(writer, row, col, height=height, ticks=12, bdcolor=None, label=label)
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self._dial = dial
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self._pcolors = pointers
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self._hrs = Pointer(dial)
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self._mins = Pointer(dial)
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if pointers[2] is not None:
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self._secs = Pointer(dial)
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def value(self, t):
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super().value(t)
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self.show()
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def show(self):
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super().show()
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t = super().value()
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# Return a unit vector of phase phi. Multiplying by this will
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# rotate a vector anticlockwise which is mathematically correct.
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# Alas clocks, modelled on sundials, were invented in the northern
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# hemisphere. Otherwise they would have rotated widdershins like
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# the maths. Hence negative sign when called.
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def uv(phi):
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return rect(1, phi)
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hc, mc, sc = self._pcolors # Colors for pointers
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hstart = 0 + 0.7j # Pointer lengths. Will rotate relative to top.
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mstart = 0 + 1j
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sstart = 0 + 1j
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self._hrs.value(hstart * uv(-t[3] * pi / 6 - t[4] * pi / 360), hc)
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self._mins.value(mstart * uv(-t[4] * pi / 30), mc)
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if sc is not None:
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self._secs.value(sstart * uv(-t[5] * pi / 30), sc)
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if self._dial.label is not None:
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v = f"{t[3]:02d}.{t[4]:02d}" if sc is None else f"{t[3]:02d}.{t[4]:02d}.{t[5]:02d}"
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self._dial.label.value(v)
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