kopia lustrzana https://github.com/peterhinch/micropython-nano-gui
68 wiersze
1.9 KiB
Python
68 wiersze
1.9 KiB
Python
# tbox.py Test/demo of Textbox widget for nano-gui
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# Released under the MIT License (MIT). See LICENSE.
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# Copyright (c) 2020 Peter Hinch
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# Usage:
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# import gui.demos.tbox
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# Initialise hardware and framebuf before importing modules.
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from color_setup import ssd # Create a display instance
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from gui.core.nanogui import refresh
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from gui.core.writer import CWriter
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import uasyncio as asyncio
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from gui.core.colors import *
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import gui.fonts.arial10 as arial10
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from gui.widgets.label import Label
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from gui.widgets.textbox import Textbox
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# Args common to both Textbox instances
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# Positional
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pargs = (2, 2, 124, 7) # Row, Col, Width, nlines
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# Keyword
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tbargs = {'fgcolor' : YELLOW,
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'bdcolor' : RED,
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'bgcolor' : DARKGREEN,
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}
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async def wrap(wri):
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s = '''The textbox displays multiple lines of text in a field of fixed dimensions. \
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Text may be clipped to the width of the control or may be word-wrapped. If the number \
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of lines of text exceeds the height available, scrolling may be performed \
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by calling a method.
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'''
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tb = Textbox(wri, *pargs, clip=False, **tbargs)
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tb.append(s, ntrim = 100, line = 0)
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refresh(ssd)
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while True:
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await asyncio.sleep(1)
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if not tb.scroll(1):
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break
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refresh(ssd)
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async def clip(wri):
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ss = ('clip demo', 'short', 'longer line', 'much longer line with spaces',
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'antidisestablishmentarianism', 'line with\nline break', 'Done')
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tb = Textbox(wri, *pargs, clip=True, **tbargs)
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for s in ss:
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tb.append(s, ntrim = 100) # Default line=None scrolls to show most recent
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refresh(ssd)
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await asyncio.sleep(1)
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async def main(wri):
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await wrap(wri)
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await clip(wri)
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def test():
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refresh(ssd, True) # Initialise and clear display.
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CWriter.set_textpos(ssd, 0, 0) # In case previous tests have altered it
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wri = CWriter(ssd, arial10, verbose=False)
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wri.set_clip(True, True, False)
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asyncio.run(main(wri))
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test()
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