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<!-- Copyright (c) 2021, Konstantin Aladyshev <aladyshev22@gmail.com> -->
<!-- SPDX-License-Identifier: MIT -->
<html>
<head>
<style>
@font-face {
font-family: "AST";
src: url(web_ast_premiumexec.woff) format('woff');
}
</style>
</head>
<body>
<canvas id="canvas" width="32" height="32"></canvas>
<script type="text/javascript">
function decimalToHex(d, padding) {
var hex = Number(d).toString(16);
padding = typeof (padding) === "undefined" || padding === null ? padding = 2 : padding;
while (hex.length < padding) {
hex = "0" + hex;
}
return hex;
}
function UnicodeToGlyphs(unicode_start_code, unicode_end_code) {
const threshold = 100; // `A` threshold to count data as a black pixel
const FW = 16;
const FH = 19;
const left_glyph_start_column = 0;
const left_glyph_end_column = FW/2 - 1;
const right_glyph_start_column = FW/2;
const right_glyph_end_column = FW - 1;
const canvas = document.getElementById('canvas');
canvas.width *= window.devicePixelRatio
canvas.height *= window.devicePixelRatio
canvas.style.width = 32
canvas.style.height = 32
const ctx = canvas.getContext('2d');
ctx.strokeRect(0, 0, FW, FH);
ctx.font = "19px AST"
ctx.fillstyle='#00f';
var wide_glyphs_str="EFI_WIDE_GLYPH gSimpleFontWideGlyphData[] = {<BR>";
var narrow_glyphs_str="EFI_NARROW_GLYPH gSimpleFontNarrowGlyphData[] = {<BR>";
for(i=unicode_start_code; i<=unicode_end_code; i++){
wide_glyph = false;
ctx.clearRect(0, 0, FW, FH);
ctx.fillText(String.fromCharCode(i), 0, 0 + FW-1);
var bitmapimg = ctx.getImageData(0, 0, FW, FH);
var bitmap = bitmapimg.data;
var left_glyph = " ";
var right_glyph = " ";
for (row=0; row<FH; row++){
left_row = 0;
for (col=left_glyph_start_column; col<=left_glyph_end_column; col++){
left_row <<= 1
if (bitmap[row*FW*4 + col*4 + 3] > threshold)
left_row |= 1;
}
left_glyph += "0x" + decimalToHex(left_row);
right_row = 0;
for (col=right_glyph_start_column; col<=right_glyph_end_column; col++){
right_row <<= 1
if(bitmap[row*FW*4 + col*4 + 3] > threshold) {
wide_glyph = true;
right_row |= 1;
}
}
right_glyph += "0x" + decimalToHex(right_row);
if (row < (FH-1)) {
left_glyph += ",";
right_glyph += ",";
}
}
if (wide_glyph)
wide_glyphs_str += "{ 0x" + decimalToHex(i) + ", 0x00, " + "{" + left_glyph + "}, {" + right_glyph + "}, {0x00,0x00,0x00}}," + "<BR>";
else
narrow_glyphs_str += "{ 0x" + decimalToHex(i) + ", 0x00, " + "{" + left_glyph + "}},"+ "<BR>";
}
narrow_glyphs_str += "};<BR>"
narrow_glyphs_str += "UINT32 gSimpleFontNarrowBytes = sizeof(gSimpleFontNarrowGlyphData);<BR>"
wide_glyphs_str += "{ 0x00, 0x00, { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00}}" + "<BR>"
wide_glyphs_str += "};<BR>"
wide_glyphs_str += "UINT32 gSimpleFontWideBytes = sizeof(gSimpleFontWideGlyphData);<BR>"
return wide_glyphs_str + "<BR>" + narrow_glyphs_str;
}
const unicode_start_code = 0x0400;
const unicode_end_code = 0x045F;
var f = new FontFace('AST', 'url(web_ast_premiumexec.woff)');
f.load().then(function() {
document.write(UnicodeToGlyphs(unicode_start_code, unicode_end_code));
})
</script>
</body>
</html>
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