drawFont.py

# coding=utf-8

import Image, ImageDraw, ImageFont
import struct


font_width = 16
font = ImageFont.truetype("/usr/share/fonts/truetype/wqy/wqy-zenhei.ttc", font_width)

def get_font_data(char):
	(width, height) = font.getsize(char)
	image = Image.new('1', (width, height), 255)
	draw = ImageDraw.Draw(image)
	draw.text((0,0), char, font=font)


	(left, top) = (0, 0)
	(right, bottom) = (0, 0)

	data = image.getdata()

	find_top = False
	for y in range(height):	
		for x in range(width):
			if data[x + y*width] == 0:
				find_top = True
				top = y
				break
		if find_top:
			break

	find_bottom = False
	for y in reversed(range(height)):	
		for x in range(width):
			if data[x + y*width] == 0:
				find_bottom = True
				bottom = y + 1
				break
		if find_bottom:
			break			

	find_left = False
	for x in range(width):
		for y in range(height):
			if data[x + y*width] == 0:
				find_left = True
				left = x
				break
		if find_left:
			break

	find_right = False
	for x in reversed(range(width)):
		for y in range(height):
			if data[x + y*width] == 0:
				find_right = True
				right = x + 1
				break
		if find_right:
			break

	(real_width, real_height) = (right-left, bottom-top)
	real_data = []
	count = 0
	byte = 0	
	for y in range(top, bottom):
		for x in range(left, right):
			write_end = False
			if data[x + y*width] == 0:				
				byte = byte + (1 << (count%8))
			count = count + 1
			if count % 8 == 0:
				write_end = True
				real_data.append(byte)
				byte = 0
	if not write_end:
		real_data.append(byte)
	return (real_data, (real_width, real_height), (left, top), (width, height))
	
fonts = {}	
lookup_table = []
lookup_offset = 1
gb2312_offset = 160
max_height = 0
for i in range(160+16,160+87):
	for j in range(160+1,160+95):	
		char = (chr(i) + chr(j)).decode('gb18030')
		(data, (width, height), (left_margin, top_margin), (whole_width, whole_height)) = get_font_data(char)
		lookup_table.append({
			'char': char,
			'offset': lookup_offset,
			'width': width,
			'height': height,
			'left': left_margin,
			'top': top_margin,
			'whole_width': whole_width,
			'data': data,
		})		
		
		
		if whole_height > max_height:
			max_height = whole_height
		lookup_offset = lookup_offset + (8 + (width * height)/8 + 3)/4

res = open('myres', 'wb')
res.write('\x01')
res.write(struct.pack('B', max_height))
res.write(struct.pack('H', len(lookup_table)))
res.write('\x56\x34')

for entry in lookup_table:	
	res.write(struct.pack('H', ord(entry['char'])))
	res.write(struct.pack('H', entry['offset']))
	
	fonts[entry['char']] = entry
	count = 0
	bitmap = ''
	for byte in entry['data']:
		mask = 0x01
		while mask <= 0x80:
			if byte & mask:
				bitmap = bitmap + '#'
			else:
				bitmap = bitmap + ' '
			count = count + 1
			if count % entry['width'] == 0:
				bitmap = bitmap + '\n'
			mask = mask << 1
	entry['bitmap'] = bitmap
	
end = 0x6 + len(lookup_table) * 4
for entry in lookup_table:
	res.seek(end + entry['offset']*4)
	res.write(struct.pack("B", entry['width']))
	res.write(struct.pack("B", entry['height']))
	res.write(struct.pack("b", entry['left']))
	res.write(struct.pack("b", entry['top']))
	res.write('\x00')
	res.write('\x00')
	res.write('\x00')
	res.write(struct.pack("B", entry['whole_width']))
	for byte in entry['data']:
		res.write(struct.pack("B", byte))
res.close()

myres