kopia lustrzana https://github.com/peterhinch/micropython-micro-gui
102 wiersze
3.0 KiB
Python
102 wiersze
3.0 KiB
Python
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# dropdown_var_tuple.py micro-gui demo of Dropdown widget with changeable elements
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# Released under the MIT License (MIT). See LICENSE.
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# Copyright (c) 2024 Peter Hinch
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# hardware_setup must be imported before other modules because of RAM use.
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import hardware_setup # Create a display instance
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from gui.core.ugui import Screen, Window, ssd
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from gui.widgets import Label, Button, CloseButton, Dropdown
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from gui.core.writer import CWriter
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# Font for CWriter
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import gui.fonts.font10 as font
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from gui.core.colors import *
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class BaseScreen(Screen):
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def __init__(self):
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super().__init__()
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wri = CWriter(ssd, font, GREEN, BLACK, verbose=False)
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# Create new dropdown entries
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tuples = (
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("Iron", self.mcb, ("Fe",)),
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("Copper", self.mcb, ("Cu",)),
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("Lead", self.mcb, ("Pb",)),
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("Zinc", self.mcb, ("Zn",)),
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)
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def newtup():
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n = 0
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while True:
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yield tuples[n]
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n = (n + 1) % len(tuples)
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self.ntup = newtup() # Instantiate the generator
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col = 2
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row = 2
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self.els = [
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("Hydrogen", self.cb, ("H",)),
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("Helium", self.cb, ("He",)),
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("Neon", self.cb, ("Ne",)),
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("Xenon", self.cb, ("Xe",)),
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("Radon", self.cb_radon, ("Ra",)),
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("Uranium", self.cb_radon, ("U",)),
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("Plutonium", self.cb_radon, ("Pu",)),
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("Actinium", self.cb_radon, ("Ac",)),
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]
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self.dd = Dropdown(
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wri,
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row,
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col,
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elements=self.els,
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dlines=5, # Show 5 lines
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bdcolor=GREEN,
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)
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row += 30
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self.lbl = Label(wri, row, col, self.dd.width, bdcolor=RED)
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b = Button(wri, 2, 120, text="del", callback=self.delcb)
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b = Button(wri, b.mrow + 2, 120, text="add", callback=self.addcb)
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b = Button(wri, b.mrow + 10, 120, text="h2", callback=self.gocb, args=("Hydrogen",))
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b = Button(wri, b.mrow + 2, 120, text="fe", callback=self.gocb, args=("Iron",))
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CloseButton(wri)
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def gocb(self, _, txt): # Go button callback: Move currency to specified entry
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self.dd.textvalue(txt)
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def addcb(self, _): # Add button callback
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self.els.append(next(self.ntup)) # Append a new entry
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self.dd.update()
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def delcb(self, _): # Delete button callback
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del self.els[self.dd.value()] # Delete current entry
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self.dd.update()
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self.lbl.value(self.dd.textvalue())
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def cb(self, dd, s):
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self.lbl.value(self.dd.textvalue())
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print("Gas", s)
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def mcb(self, dd, s):
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self.lbl.value(self.dd.textvalue())
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print("Metal", s)
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def cb_radon(self, dd, s): # Yeah, Radon is a gas too...
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self.lbl.value(self.dd.textvalue())
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print("Radioactive", s)
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def after_open(self):
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self.lbl.value(self.dd.textvalue())
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def test():
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print("Dropdown demo.")
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Screen.change(BaseScreen)
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test()
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