80 lines
2.0 KiB
Python
Executable File
80 lines
2.0 KiB
Python
Executable File
#!/usr/bin/env python3
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from math import ceil
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from sys import argv
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from PIL import Image, ImageDraw, ImageFont
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if (len(argv) < 4):
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raise BaseException("At least three arguments expected: " + \
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"<font path> <font size> <output image> " + \
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"[initial char index] [char range]")
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font_path = argv[1]
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font_size = int(argv[2])
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image_out = argv[3]
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initial_char_index = int(argv[4]) if len(argv) > 4 else 0x20
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char_range = int(argv[5]) if len(argv) > 5 else 96
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line_count = ceil(char_range / 16)
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scan_index = 0x20 if len(argv) > 4 else initial_char_index
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scan_range = 0x30ff - 0x20 if len(argv) > 4 else char_range
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assert char_range > 1
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mode = '1' # 1-bit depth
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background_color = (1) # white
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foreground_color = (0) # black
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# load font
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font = ImageFont.truetype(font_path, font_size)
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# find max char size
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char_width = 0
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char_height = 0
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for i in range(scan_range):
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bbox = list(font.getbbox(chr(scan_index + i)))
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# don't you dare overlap
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if (bbox[0] < 0):
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bbox[2] = -bbox[0]
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if (bbox[1] < 0):
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bbox[3] -= bbox[1]
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if bbox[2] > char_width:
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char_width = bbox[2]
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if bbox[3] > char_height:
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char_height = bbox[3]
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image_out_width = char_width * 16
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image_out_height = char_height * line_count
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# fxconv metadata
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print(f"{image_out.split('/')[-1]}:")
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print(" type: font")
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print(" charset: print")
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print(f" grid.size: {char_width}x{char_height}")
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# create image
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im = Image.new(mode, (image_out_width, image_out_height))
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# draw
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draw = ImageDraw.Draw(im)
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draw.rectangle((0, 0, image_out_width, image_out_height), fill=background_color)
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x = -char_width
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y = 0
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for i in range(char_range):
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x += char_width
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char = chr(initial_char_index + i)
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bbox = font.getbbox(char)
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x_mod = 0
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y_mod = 0
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# don't you dare overlap
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if (bbox[0] < 0):
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x_mod = -bbox[0]
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if (bbox[1] < 0):
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y_mod = -bbox[1]
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if i != 0 and i % 16 == 0:
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x = 0
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y += char_height
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draw.text((x + x_mod, y + y_mod), char, fill=foreground_color, font=font)
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# save
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im.save(image_out)
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