kopia lustrzana https://github.com/peterhinch/micropython-font-to-py
102 wiersze
3.9 KiB
Python
Executable File
102 wiersze
3.9 KiB
Python
Executable File
# Some code adapted from Daniel Bader's work at the following URL
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# https://dbader.org/blog/monochrome-font-rendering-with-freetype-and-python
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# With thanks to Stephen Irons @ironss for various improvements, also to
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# @enigmaniac for ideas around handling `bdf` and `pcf` files.
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# The MIT License (MIT)
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#
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# Copyright (c) 2016-2023 Peter Hinch
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#
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# Permission is hereby granted, free of charge, to any person obtaining a copy
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# of this software and associated documentation files (the "Software"), to deal
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# in the Software without restriction, including without limitation the rights
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# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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# copies of the Software, and to permit persons to whom the Software is
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# furnished to do so, subject to the following conditions:
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#
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# The above copyright notice and this permission notice shall be included in
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# all copies or substantial portions of the Software.
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#
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# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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# THE SOFTWARE.
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class Bitmap:
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"""
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A 2D bitmap image represented as a list of byte values. Each byte indicates
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the state of a single pixel in the bitmap. A value of 0 indicates that the
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pixel is `off` and any other value indicates that it is `on`.
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"""
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def __init__(self, width, height, pixels=None):
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self.width = width
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self.height = height
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self.pixels = pixels or bytearray(width * height)
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def display(self):
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"""Print the bitmap's pixels."""
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for row in range(self.height):
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for col in range(self.width):
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char = "#" if self.pixels[row * self.width + col] else "."
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print(char, end="")
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print()
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print()
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def bitblt(self, src, top, left):
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"""Copy all pixels from `src` into this bitmap"""
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srcpixel = 0
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dstpixel = top * self.width + left
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row_offset = self.width - src.width
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for _ in range(src.height):
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for _ in range(src.width):
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self.pixels[dstpixel] = src.pixels[srcpixel]
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srcpixel += 1
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dstpixel += 1
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dstpixel += row_offset
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# Horizontal mapping generator function
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def get_hbyte(self, reverse):
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for row in range(self.height):
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col = 0
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while True:
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bit = col % 8
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if bit == 0:
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if col >= self.width:
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break
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byte = 0
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if col < self.width:
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if reverse:
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byte |= self.pixels[row * self.width + col] << bit
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else:
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# Normal map MSB of byte 0 is (0, 0)
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byte |= self.pixels[row * self.width + col] << (7 - bit)
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if bit == 7: # noqa: PLR2004
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yield byte
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col += 1
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# Vertical mapping
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def get_vbyte(self, reverse):
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for col in range(self.width):
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row = 0
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while True:
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bit = row % 8
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if bit == 0:
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if row >= self.height:
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break
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byte = 0
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if row < self.height:
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if reverse:
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byte |= self.pixels[row * self.width + col] << (7 - bit)
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else:
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# Normal map MSB of byte 0 is (0, 7)
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byte |= self.pixels[row * self.width + col] << bit
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if bit == 7: # noqa: PLR2004
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yield byte
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row += 1
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