mirror of
git://projects.qi-hardware.com/setfont2.git
synced 2024-12-05 04:11:58 +02:00
94 lines
2.3 KiB
Python
94 lines
2.3 KiB
Python
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#!/usr/bin/env python2
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# Converts Linux font character array to PNG.
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import sys
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# Python Imaging Library
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# http://www.pythonware.com/products/pil/
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import Image
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def readSource(inp):
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data = []
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meta = {}
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inData = False
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inMeta = False
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for line in inp.readlines():
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csta = line.find('/*')
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if csta != -1:
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cend = line.index('*/') + 2
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line = line[ : csta] + line[cend : ]
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line = line.strip()
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if inData:
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if line == '};':
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inData = False
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elif line:
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valStr = line.rstrip(',')
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# Chars wider than 8 not supported yet.
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assert ',' not in valStr
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data.append(int(valStr, 16))
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elif inMeta:
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if line == '};':
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inMeta = False
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elif line:
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key, value = line.split('=')
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key = key.strip().lstrip('.')
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value = value.strip().rstrip(',')
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meta[key] = value
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elif line.startswith('static const unsigned char'):
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assert line[-1] == '{'
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inData = True
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elif line.startswith('const struct font_desc'):
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assert line[-1] == '{'
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inMeta = True
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return data, meta
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def createImage(width, height, data):
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assert len(data) == height * 256
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# Reserve space for a 32 * 8 grid of characters.
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image = Image.new('P', (32 * (width + 1) + 1, 8 * (height + 1) + 1))
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palette = [0, 0, 0] * 256
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palette[3 : 6] = [255, 255, 255] # foreground
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palette[6 : 9] = [128, 0, 0] # grid
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image.putpalette(palette)
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# Draw grid.
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for y in xrange(0, image.size[1], height + 1):
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for x in xrange(0, image.size[0]):
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image.putpixel((x, y), 2)
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for x in xrange(0, image.size[0], width + 1):
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for y in xrange(0, image.size[1]):
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image.putpixel((x, y), 2)
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# Draw characters.
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for c in xrange(256):
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row, col = divmod(c, 32)
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y = 1 + row * (height + 1)
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for i in xrange(c * height, (c + 1) * height):
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x = 1 + col * (width + 1)
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pat = data[i]
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for bit in xrange(width):
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if pat & 128:
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image.putpixel((x, y), 1)
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pat <<= 1
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x += 1
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y += 1
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return image
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if len(sys.argv) != 2:
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print >>sys.stderr, 'Usage: python font2png.py <source_file>'
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sys.exit(2)
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else:
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fileName = sys.argv[1]
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assert fileName.endswith('.c')
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outFileName = fileName[ : -2] + '.png'
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inp = open(fileName, 'r')
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try:
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data, meta = readSource(inp)
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finally:
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inp.close()
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width = int(meta['width'])
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height = int(meta['height'])
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image = createImage(width, height, data)
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image.save(outFileName)
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