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README.md
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@ -1,27 +1,17 @@
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# Unicode fonts
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# uf5x7: A 5x7 Unicode font
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This repository contains Unicode fonts that support most of the common Unicode
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blocks. They can be used in C.Basic with the custom font mechanism or in
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add-ins if there is a font manager (as of March 2021 only gint has one).
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There are currently two fonts in this repository:
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* [uf5x7: A 5x7 Unicode extension for fx-9860G](#uf5x7-an-unicode-extension-for-fx-9860g)
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* [uf8x9: An original Unicode font for fx-CG](#uf8x9-an-original-unicode-font-for-fx-cg)
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The fonts are **under CC0**, there are no conditions for using them. A link
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back here would be appreciated though!
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Related topic on Planète Casio: [Police 5x7 Unicode pour add-ins et C.Basic](https://www.planet-casio.com/Fr/forums/topic15732-1-Police-5x7-Unicode-pour-add-ins-et-C.Basic.html)
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## uf5x7: An Unicode extension for fx-9860G
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uf5x7 is a basic Unicode font mostly suitable for calculators of the fx-9860G
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series (the ones with small 128x64 displays).
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uf5x7 is a 5x7 font that suports most of the common Unicode blocks. It can be
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used in C.Basic with the custom font mechanism or in add-ins if the font
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manager supports it.
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![Preview image: "Mézalors Δ=2 ⇒ ∀x∈S, x⊆Δ"](https://www.planet-casio.com/files/forums/preview-166451.png)
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Supported blocks:
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The font is **under CC0**, there are no conditions for using it. A link back here
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would be appreciated though!
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Related topic on Planète Casio: [Police 5x7 Unicode pour add-ins et C.Basic](https://www.planet-casio.com/Fr/forums/topic15732-1-Police-5x7-Unicode-pour-add-ins-et-C.Basic.html)
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Currently the following blocks have been drawn:
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* `U+0020 .. U+007F` - ASCII (128 chars)
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* `U+00A0 .. U+00FF` - Latin-1 Supplement (96 chars)
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@ -38,61 +28,33 @@ Supported blocks:
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* `U+2440 .. U+244F` - Optical character recognition (16 chars - thanks @Alice!)
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* `U+25A0 .. U+25FF` - Geometric shapes (96 chars)
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* `U+2800 .. U+28FF` - Braille patterns (256 chars - thanks @Alice!)
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* `U+3000 .. U+303F` - CJK Punctuation (48 chars - thanks @Alice!)
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* `U+3040 .. U+309F` - Hiragana (96 chars)
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* `U+30A0 .. U+30FF` - Katakana (96 chars)
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The following blocks are being considered for future support:
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* Finish Cyrillic
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* IPA extensions and Phonetic extensions
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* Hiragana and Katakana
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Other characters supported in `FONTCHARACTER` (incomplete list):
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* `U+2139` - Imaginary number
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* `U+231F` - Fraction symbol
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* `U+3010` - Special bracket
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* `U+3011` - Special bracket
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Full font:
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## Constructing a full image of the font
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![](uf5x7.png)
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## uf8x9: An original Unicode font for fx-CG
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uf8x9 is a font designed specifically for the large fx-CG display (396x224),
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which is thin vertically and thick horizontally.
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Supported blocks:
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* `U+0020 .. U+007F` - ASCII (128 chars)
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* `U+00A0 .. U+00FF` - Latin-1 Supplement (96 chars)
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* `U+0100 .. U+017F` - Latin Extended-A (128 chars)
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* `U+0370 .. U+03FF` - Greek (144 chars)
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* `U+0400 .. U+047F` - Cyrillic (128 chars)
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* `U+16A0 .. U+16FF` - Runic (96 chars)
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* `U+2010 .. U+205F` - General punctuation (80 chars)
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* `U+2070 .. U+209F` - Subscripts and superscripts (48 chars)
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* `U+20A0 .. U+20BF` - Currency symbols (32 chars)
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* `U+2160 .. U+217F` - Roman numerals (32 chars)
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* `U+2190 .. U+21FF` - Arrows (112 chars)
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* `U+2200 .. U+22FF` - Mathematical operators (256 chars - partial!)
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Full font:
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![](uf8x9.png)
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## Constructing full font images
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Use `gen.py` too generate the full images from the sections. You will need
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Python 3 and Pillow (PIL might be okay).
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The `gen.py` script can be used to generate `uf5x7.png`, the full image of the
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font. You will need Python 3 and Pillow (PIL might be okay).
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```sh
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% ./gen.py uf5x7/ uf5x7.png
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% ./gen.py uf8x9/ uf8x9.png
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% ./gen.py uf5x7/*
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```
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It will read each block's position from its file name (which should be on the
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form `U\+[0-9A-Fa-f]{4}.png`). For image files with a different name, it will
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output an anonymous block.
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form `U\+[0-9A-Fa-f]{4}.png`) and guess the block end from the image
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dimensions. For image files with a different name, it will output an anonymous
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block.
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The file `gen-chars.png` provides some character templates for it to render the
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full image.
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@ -104,48 +66,19 @@ for extended font support.
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## Using in gint
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To convert the font with `fxconv`, pass the name of a folder containing
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block images instead of a simple image and set `charset` to `unicode`. Note
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that in this setting, `area` is ignored and the same grid parameters are
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applied to all block images.
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**Disclaimer**: this is being worked on, but not implemented in gint yet.
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When converting the font with `fxconv`, pass the name of a folder containing
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block images instead of a simple image and set `charset` to `unicode`.
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```sh
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% fxconv -f uf5x7/ name:uf5x7 charset:unicode grid.size:5x7 grid.padding:1
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% fxconv -f uf8x9/ name:uf8x9 charset:unicode grid.size:8x11 grid.padding:1 proportional:true height:9
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% fxconv -f uf5x7/ name:uf5x7 charset:unicode grid.size:5x7
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```
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When using the fxSDK, add the `uf5x7` folder to your list of metadata files and
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set the type as `font`.
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```
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uf5x7: # Note that this is a folder
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type: font
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name: uf5x7
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charset: unicode
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grid.size: 5x7
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grid.padding: 1
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uf8x9:
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type: font
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name: uf8x9
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charset: unicode
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grid.size: 8x11
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grid.padding: 1
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proportional: true
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height: 9
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```
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To use the font, configure it with `dfont()`, then call `dtext()` as usual.
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Make sure the string is encoded as UTF-8. The `u8` prefix can be used if your
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source file is not encoded as UTF-8.
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When using the font, just call `dtext()` as usual and make sure the string is
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encoded as utf8. The `u8` prefix can be used if your source file is not
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encoded as utf8.
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```c
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#include <gint/display.h>
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extern font_t uf5x7, uf8x9;
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dfont(&uf5x7);
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dtext(5, 5, C_BLACK, "Mézalors Δ=2 ⇒ ∀x∈S, x⊆Δ");
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dfont(&uf8x9);
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dtext(5, 15, C_BLACK, "Δt+(3-θ²)! Eurêka!");
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dtext(5, 5, "Mézalors Δ=2 ⇒ ∀x∈S, x⊆Δ", BLACK, WHITE);
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```
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54
gen.py
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import os
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import re
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if len(sys.argv) != 3:
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print(f"usage: {sys.argv[0]} <FONT FOLDER> <OUTPUT IMAGE>")
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if len(sys.argv) <= 1:
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print(f"usage: {sys.argv[0]} <block files...>")
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sys.exit(1)
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files = sorted(sys.argv[1] + "/" + x for x in os.listdir(sys.argv[1]))
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files = sorted(sys.argv[1:])
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chars = PIL.Image.open("gen-chars.png")
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WHITE = (255, 255, 255)
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BLACK = (0, 0, 0)
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def empty_separator(width):
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img = PIL.Image.new("RGB", (width, 9), color=WHITE)
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def empty_separator():
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img = PIL.Image.new("RGB", (112, 9), color=WHITE)
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for j in range(3, 6):
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for i in range(1, width-1):
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for i in range(1, 111):
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if not ((i + j) & 1):
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img.putpixel((i, j), BLACK)
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index = 4 * char_index(c)
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return chars.crop((index, 0, index + 3, 5))
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def separator(start, width):
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img = PIL.Image.new("RGB", (width, 9), color=WHITE)
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def separator(start, end):
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img = PIL.Image.new("RGB", (112, 9), color=WHITE)
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for j in range(3, 6):
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for i in range(1, width//2 - 15):
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for i in range(1, 26):
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if not ((i + j) & 1):
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img.putpixel((i, j), BLACK)
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for i in range(width//2 + 15, width-1):
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for i in range(86, 111):
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if not ((i + j) & 1):
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img.putpixel((i, j), BLACK)
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x = width//2 - 11
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x = 27
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for c in "U+{:04X}".format(start):
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img.paste(char_image(c), (x, 2))
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x += 4
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for i in range(54, 58):
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img.putpixel((i, 4), BLACK)
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x = 62
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for c in "U+{:04X}".format(end):
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img.paste(char_image(c), (x, 2))
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x += 4
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return img
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class Block:
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def __init__(self, path):
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basename = os.path.basename(path)
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match = re.search(r'U\+([0-9A-Za-z]{4})', basename)
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self.block_start = None
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self.block_end = None
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self.img = PIL.Image.open(path)
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if match is not None:
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self.block_start = int(match[1], 16)
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print('{} U+{:04X}'.format(basename, self.block_start))
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self.block_end = self.block_start + 16 * (self.img.height // 9) - 1
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print('{} U+{:04X} - U+{:04X}'.format(basename, self.block_start,
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self.block_end))
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else:
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print(f'{basename} not a block')
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def header(self, width):
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def header(self):
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if self.block_start is not None:
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return separator(self.block_start, width)
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return separator(self.block_start, self.block_end)
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else:
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return empty_separator(width)
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return empty_separator()
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def body(self):
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return self.img
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def height(self):
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return self.img.height + 9
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def width(self):
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return self.img.width
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blocks = [ Block(file) for file in files ]
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width = max(b.width() for b in blocks)
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height = sum(b.height() for b in blocks)
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left_height = 0
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left_height += b.height()
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if 2 * left_height >= height: break
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result = PIL.Image.new("RGB", (2 * width + 8, left_height), color=WHITE)
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result = PIL.Image.new("RGB", (2 * 112 + 8, left_height), color=WHITE)
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x = 0
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y = 0
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for b in blocks:
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header = b.header(width)
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header = b.header()
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result.paste(header, (x, y))
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y += header.height
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if y >= left_height:
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y = 0
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x += width + 8
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x += 112 + 8
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result.save(sys.argv[2])
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result.save("uf5x7.png")
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BIN
uf5x7.png
Before Width: | Height: | Size: 22 KiB After Width: | Height: | Size: 17 KiB |
BIN
uf5x7/U+0400.png
Before Width: | Height: | Size: 33 KiB After Width: | Height: | Size: 26 KiB |
BIN
uf5x7/U+3000.png
Before Width: | Height: | Size: 831 B |
BIN
uf5x7/U+3040.png
Before Width: | Height: | Size: 20 KiB |
BIN
uf5x7/U+30A0.png
Before Width: | Height: | Size: 19 KiB |
BIN
uf8x9/U+0020.png
Before Width: | Height: | Size: 17 KiB |
BIN
uf8x9/U+00A0.png
Before Width: | Height: | Size: 18 KiB |
BIN
uf8x9/U+0100.png
Before Width: | Height: | Size: 25 KiB |
BIN
uf8x9/U+0370.png
Before Width: | Height: | Size: 25 KiB |
BIN
uf8x9/U+0400.png
Before Width: | Height: | Size: 24 KiB |
BIN
uf8x9/U+16A0.png
Before Width: | Height: | Size: 16 KiB |
BIN
uf8x9/U+2010.png
Before Width: | Height: | Size: 8.7 KiB |
BIN
uf8x9/U+2070.png
Before Width: | Height: | Size: 6.7 KiB |
BIN
uf8x9/U+20A0.png
Before Width: | Height: | Size: 6.9 KiB |
BIN
uf8x9/U+2160.png
Before Width: | Height: | Size: 6.3 KiB |
BIN
uf8x9/U+2190.png
Before Width: | Height: | Size: 18 KiB |
BIN
uf8x9/U+2200.png
Before Width: | Height: | Size: 22 KiB |