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font_conv_core.php
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font_conv_core.php
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<?php
$offline = 0;
if (!isset($_SERVER["HTTP_HOST"])) {
parse_str($argv[1], $_POST);
$offline = 1;
}
putenv('GDFONTPATH=' . realpath('.'));
if($offline == 0) {
header("Cache-Control: no-store, no-cache, must-revalidate, max-age=0");
header("Cache-Control: post-check=0, pre-check=0", false);
header("Pragma: no-cache");
$font_file = $_FILES["font_file"]["tmp_name"];
$font_name = $_FILES["font_file"]["name"];
$output_name = $_POST["name"];
$h_px = $_POST["height"];
$bpp = $_POST['bpp'];
$unicode_start = $_POST["uni_first"];
$unicode_last = $_POST["uni_last"];
$utf8_list = $_POST["list"];
$builtin = $_POST["built_in"];
if(!empty($_POST["monospace"])) $monospace = $_POST["monospace"];
else $monospace = 0;
if(!empty($_POST["scale"])) $scale = $_POST["scale"];
else $scale = 100;
if(!empty($_POST["base_shift"])) $base_shift = $_POST["base_shift"];
else $base_shift = 0;
if(isset($_POST["built_in"])) $builtin = $_POST["built_in"];
else $builtin = 0;
if(isset($_POST["built_in_sym"])) $builtin_sym = $_POST["built_in_sym"];
else $builtin_sym = 0;
} else {
if(isset($_POST["name"])) {
$output_name = $_POST["name"];
} else {
echo("Mising Name\n");
exit(0);
}
if(isset($_POST["height"])) {
$h_px = $_POST["height"];
} else {
echo("Mising Height\n");
exit(0);
}
if(isset($_POST["bpp"])) {
$bpp = $_POST["bpp"];
} else {
echo("Mising Bpp\n");
exit(0);
}
if(isset($_POST["font"])) {
$font_file = $_POST["font"];
$font_name = $_POST["font"];
} else {
echo("Mising Font\n");
exit(0);
}
if(isset($_POST["uni_first"])) {
$unicode_start = $_POST["uni_first"];
} else {
echo("Mising First unicode\n");
exit(0);
}
if(isset($_POST["uni_last"])) {
$unicode_last = $_POST["uni_last"];
} else {
echo("Mising Last unicode\n");
exit(0);
}
if(isset($_POST["list"])) {
$utf8_list = $_POST["list"];
} else {
$utf8_list = "";
}
if(isset($_POST["built_in"])) {
$builtin = $_POST["built_in"];
} else {
$builtin = 0;
}
if(isset($_POST["built_in_sym"])) {
$builtin_sym = $_POST["built_in_sym"];
} else {
$builtin_sym = 0;
}
if(isset($_POST["monospace"])) {
$monospace = $_POST["monospace"];
} else {
$monospace = 0;
}
if(isset($_POST["scale"])) {
$scale = $_POST["scale"];
} else {
$scale = 100;
}
if(isset($_POST["base_shift"])) {
$base_shift = $_POST["base_shift"];
} else {
$base_shift = 0;
}
}
if($builtin) $builtin = 1;
if($builtin_sym) $builtin_sym = 1;
$h_pt = $h_px * 3;
$canvas_w = 5 * $h_px;
$c_src = "";
$c_glyph_bitmap = "";
$c_glyph_dsc = "";
$c_utf8_list = "";
$c_font_dsc = "";
$c_info = "";
if($builtin_sym) {
$unicode_start = 61440;
$unicode_last = 62190;
$utf8_list = "



";
$font_file = "./fontawesome.ttf";
$font_name = "fontawesome.ttf";
}
$unicode_start_str = "U+" . str_pad(dechex($unicode_start), 4, '0', STR_PAD_LEFT);
$unicode_last_str = "U+" . str_pad(dechex($unicode_last), 4, '0', STR_PAD_LEFT);;
$unicode_start_letter = utf8($unicode_start);
$unicode_last_letter = utf8($unicode_last);
$byte_cnt = 0;
$base_line_ofs = 0;
height_corr();
$base_line_ofs -= $base_shift;
if($scale <= 0) $scale = 100;
$h_pt = $h_pt * $scale / 100;
$h_pt = floor($h_pt/0.75); /*Be sure h_pt is dividabe with 0.75*/
$h_pt = $h_pt * 0.75;
if($builtin) {
$c_src = "
#include \"../lv_misc/lv_font.h\"\n"; //fix relative path error
$c_src .= "\n#if USE_". strtoupper($output_name) . " != 0\t/*Can be enabled in lv_conf.h*/\n\n";
$c_info = "/***********************************************************************************
* $font_name $h_px px Font in $unicode_start_str ($unicode_start_letter) .. $unicode_last_str ($unicode_last_letter) range with all bpp";
} else {
$c_src = "
#include \"lvgl/lv_misc/lv_font.h\"\n\n";
$c_info = "/***********************************************************************************
* $font_name $h_px px Font in $unicode_start_str ($unicode_start_letter) .. $unicode_last_str ($unicode_last_letter) range with $bpp bpp";
}
$utf8_array = array();
$unicode_array = array();
if(strlen($utf8_list) != 0) {
$utf8_list = html_entity_decode($utf8_list, ENT_COMPAT | ENT_HTML401, ini_get("default_charset"));
$list_rep = str_replace("\\", "\\\\", $utf8_list);
$list_rep = str_replace('$', '\\$', $utf8_list);
$list_rep = str_replace('\'', '\\\'', $utf8_list);
$c_info .= "\n * Sparse font with only these characters: ";
/*Order the list*/
for($i = 0; $i < mb_strlen($utf8_list); $i++) {
$letter = mb_substr($utf8_list, $i, 1);
$unicode_act = ord_utf8( $letter);
if($unicode_act == 0 || $unicode_act < $unicode_start || $unicode_act > $unicode_last) continue;
$unicode_array[$i] = $unicode_act;
}
sort($unicode_array, SORT_NUMERIC);
for ($i = 0; $i < count($unicode_array); $i++) {
$utf8_array[$i] = utf8($unicode_array[$i]);
$c_info .= $utf8_array[$i];
}
$c_utf8_list = "/*List of unicode characters*/
static const uint32_t $output_name". "_unicode_list[] = {";
for($i = 0; $i < count($unicode_array); $i++) {
$unicode_str = str_pad(dechex($unicode_array[$i]), 4, '0', STR_PAD_LEFT);
$c_utf8_list .= "\n $unicode_array[$i],\t/*Unicode: U+$unicode_str ($utf8_array[$i])*/";
}
$c_utf8_list .= "\n 0, /*End indicator*/\n};";
}
$c_info .= "\n***********************************************************************************/\n";
$c_src .= $c_info;
$c_glyph_bitmap = "
/*Store the image of the letters (glyph)*/
static const uint8_t $output_name"."_glyph_bitmap[] =
{\n";
$c_glyph_dsc = "
/*Store the glyph descriptions*/
static const lv_font_glyph_dsc_t $output_name" . "_glyph_dsc[] =
{\n";
$c_font_dsc = "lv_font_t $output_name =
{";
if($builtin_sym == 0) {
$c_font_dsc .= "
.unicode_first = $unicode_start".",\t/*First Unicode letter in this font*/
.unicode_last = $unicode_last".",\t/*Last Unicode letter in this font*/";
} else {
$c_font_dsc .= "
.unicode_first = LV_SYMBOL_GLYPH_FIRST".",\t/*First Unicode letter in this font*/
.unicode_last = LV_SYMBOL_GLYPH_LAST".",\t/*Last Unicode letter in this font*/";
}
$c_font_dsc .= "
.h_px = $h_px".",\t\t\t\t/*Font height in pixels*/
.glyph_bitmap = $output_name"."_glyph_bitmap,\t/*Bitmap of glyphs*/
.glyph_dsc = $output_name"."_glyph_dsc,\t\t/*Description of glyphs*/";
if($builtin_sym) { $c_font_dsc .= "
.glyph_cnt = ". "50" . ",\t\t\t/*Number of glyphs in the font*/
.unicode_list = NULL,\t/*Every character in the font from 'unicode_first' to 'unicode_last'*/
.get_bitmap = lv_font_get_bitmap_continuous,\t/*Function pointer to get glyph's bitmap*/
.get_width = lv_font_get_width_continuous,\t/*Function pointer to get glyph's width*/";
} else if(count($utf8_array) == 0) { $c_font_dsc .= "
.glyph_cnt = ". ($unicode_last - $unicode_start + 1) . ",\t\t\t/*Number of glyphs in the font*/
.unicode_list = NULL,\t/*Every character in the font from 'unicode_first' to 'unicode_last'*/
.get_bitmap = lv_font_get_bitmap_continuous,\t/*Function pointer to get glyph's bitmap*/
.get_width = lv_font_get_width_continuous,\t/*Function pointer to get glyph's width*/";
} else {
$c_font_dsc .= "
.glyph_cnt = ". count($utf8_array) . ",\t\t\t/*Number of glyphs in the font*/
.unicode_list = $output_name"."_unicode_list,\t/*List of unicode characters*/
.get_bitmap = lv_font_get_bitmap_sparse,\t/*Function pointer to get glyph's bitmap*/
.get_width = lv_font_get_width_sparse,\t/*Function pointer to get glyph's width*/";
}
if($builtin) {
$c_font_dsc .= "\n#if USE_" . strtoupper($output_name) . " == 1
.bpp = 1,\t\t\t\t/*Bit per pixel*/
#elif USE_" . strtoupper($output_name) . " == 2
.bpp = 2,\t\t\t\t/*Bit per pixel*/
#elif USE_" . strtoupper($output_name) . " == 4
.bpp = 4,\t\t\t\t/*Bit per pixel*/
#elif USE_" . strtoupper($output_name) . " == 8
.bpp = 8,\t\t\t\t/*Bit per pixel*/
#endif\n";
} else {
$c_font_dsc .= "\n .bpp = $bpp,\t\t\t\t/*Bit per pixel*/\n";
}
if($monospace) {
$c_font_dsc .= " .monospace = $monospace,\t\t/*Fix width (0: if not used)*/\n";
}
else
{
$c_font_dsc .= " .monospace = 0, \t\t /*Fix width (0: if not used)*/\n"; //in case of misunderstanding
}
$c_font_dsc .= " .next_page = NULL,\t\t/*Pointer to a font extension*/
};";
// Create the image
$im = imagecreatetruecolor($canvas_w, $h_px);
// Create some colors
$white = imagecolorallocate($im, 255, 255, 255);
$black = imagecolorallocate($im, 0, 0, 0);
if(!$builtin) {
convert_all_letters();
} else {
$c_glyph_bitmap .= "#if USE_" . strtoupper($output_name) . " == 1\n";
$c_glyph_dsc .= "#if USE_" . strtoupper($output_name) . " == 1\n";
$bpp = 1;
$byte_cnt = 0;
convert_all_letters();
$c_glyph_bitmap .= "\n#elif USE_" . strtoupper($output_name) . " == 2\n";
$c_glyph_dsc .= "\n#elif USE_" . strtoupper($output_name) . " == 2\n";
$bpp = 2;
$byte_cnt = 0;
convert_all_letters();
$c_glyph_bitmap .= "\n#elif USE_" . strtoupper($output_name) . " == 4\n";
$c_glyph_dsc .= "\n#elif USE_" . strtoupper($output_name) . " == 4\n";
$bpp = 4;
$byte_cnt = 0;
convert_all_letters();
$c_glyph_bitmap .= "\n#elif USE_" . strtoupper($output_name) . " == 8\n";
$c_glyph_dsc .= "\n#elif USE_" . strtoupper($output_name) . " == 8\n";
$bpp = 8;
$byte_cnt = 0;
convert_all_letters();
$c_glyph_bitmap .= "\n#endif\n";
$c_glyph_dsc .= "\n#endif\n";
}
$c_glyph_bitmap .= "};";
$c_glyph_dsc .= "};";
$c_src .= $c_glyph_bitmap . "\n\n" . $c_glyph_dsc . "\n\n";
if(strlen($c_utf8_list) && !$builtin_sym) $c_src .= $c_utf8_list . "\n\n";
$c_src .= $c_font_dsc;
if($builtin) {
$c_src .= "\n\n#endif /*USE_". strtoupper($output_name) . "*/\n";
}
imagedestroy($im);
download($output_name, $c_src);
function convert_all_letters()
{
global $utf8_array;
global $unicode_array;
global $unicode_start;
global $unicode_last;
global $font_file;
global $canvas_w;
global $h_px;
global $h_pt;
global $bpp;
global $base_line_ofs;
global $im;
global $black;
global $white;
if(count($utf8_array) == 0) {
for($unicode_act = $unicode_start; $unicode_act <= $unicode_last; $unicode_act++) {
imagefilledrectangle($im, 0, 0, $canvas_w, $h_px, $black);
$letter = utf8($unicode_act);
$co = imagettftext($im, $h_pt, 0, 0, $h_pt + $base_line_ofs, $white, $font_file, $letter); //Size and Y in pt NOT px
$w_px = $co[1] - $co[0];
convert_letter($im, $unicode_act, $w_px, $bpp);
}
} else {
for($i = 0; $i < count($unicode_array); $i++) {
imagefilledrectangle($im, 0, 0, $canvas_w, $h_px, $black);
$co = imagettftext($im, $h_pt, 0, 0, $h_pt + $base_line_ofs, $white, $font_file, $utf8_array[$i]); //Size and Y in pt NOT px
$w_px = $co[1] - $co[0];
convert_letter($im, $unicode_array[$i], $w_px, $bpp);
}
}
}
function height_corr()
{
global $h_pt;
global $h_px;
global $font_file;
global $base_line_ofs;
global $unicode_start;
global $unicode_last;
$im = imagecreatetruecolor($h_pt * 1, $h_pt * 1); /*The size is not important*/
$white = imagecolorallocate($im, 255, 255, 255);
$black = imagecolorallocate($im, 0, 0, 0);
$max_h = $h_px;
$test_text = '| [§@#ß$ÄÁŰ¿?`\'"_pyj';
if($unicode_start >= 61440 && $unicode_last <= 63149) { //some symbols are out range of 62xxx in fa-solid-900.ttf
$test_text .= " ";
//echo("symbol<br>");
}
while($h_pt > 0) {
$co = imagettftext($im, $h_pt, 0, 0, $h_pt, $white, $font_file, $test_text );
$h = $co[1] - $co[7];
// echo("h: $h <br>");
if($h > $max_h) $h_pt-=0.75;
else {
$base_line_ofs = - $co[7];
break;
}
}
imagedestroy($im);
}
function utf8($num)
{
if($num<=0x7F) return chr($num);
if($num<=0x7FF) return chr(($num>>6)+192).chr(($num&63)+128);
if($num<=0xFFFF) return chr(($num>>12)+224).chr((($num>>6)&63)+128).chr(($num&63)+128);
if($num<=0x1FFFFF) return chr(($num>>18)+240).chr((($num>>12)&63)+128).chr((($num>>6)&63)+128).chr(($num&63)+128);
return '';
}
function ord_utf8($s){
$len = strlen($s);
if($len == 0) return 0;
if($len == 1) $s = unpack('C*',$s[0]."0"."0"."0");
else if($len == 2) $s = unpack('C*',$s[0].$s[1]."0"."0");
else if($len == 3) $s = unpack('C*',$s[0].$s[1].$s[2]."0");
else if($len == 4) $s = unpack('C*',$s[0].$s[1].$s[2].$s[3]);
return (int)$s[1]<(1<<7)?$s[1]:
($s[1]>239&&$s[2]>127&&$s[3]>127&&$s[4]>127?(7&$s[1])<<18|(63&$s[2])<<12|(63&$s[3])<<6|63&$s[4]:
($s[1]>223&&$s[2]>127&&$s[3]>127?(15&$s[1])<<12|(63&$s[2])<<6|63&$s[3]:
($s[1]>193&&$s[2]>127?(31&$s[1])<<6|63&$s[2]:0)));
}
function convert_letter($glyph, $unicode, $w, $bpp) {
global $h_px;
global $c_glyph_bitmap;
global $c_glyph_dsc;
global $byte_cnt;
$w = $h_px * 5 - 1; //assume bigger width to be sure
$whitespace = 0;
//Decrement width to trim the the empty columns
for($x = $w; $x >= 0; $x--) {
$c = 0;
for($y = 0; $y < $h_px; $y++) {
$c = imagecolorat($glyph, $x, $y);
$c = $c & 0xFF;
if($c != 0x00) break;
}
if($c != 0x00) break;
$w--;
}
if($x < 0) {
$whitespace = 1;
$w = floor($h_px / 4); /*Width of white space is 1/3 height*/
}
//Trim leading empty columns
$first_col = 0;
if(!$whitespace) {
for($first_col = 0; $first_col <= $w; $first_col++) {
$c = 0;
for($y = 0; $y < $h_px; $y++) {
$c = imagecolorat($glyph, $first_col, $y);
$c = $c & 0xFF;
if($c != 0x00) break;
}
if($c != 0x00) break;
}
$w -= $first_col;
}
$w++; //E.g. x1=5, x2=8 -> w=3+1
$letter = utf8($unicode);
$unicode_str = str_pad(dechex($unicode), 4, '0', STR_PAD_LEFT);
$c_glyph_bitmap .= " /*Unicode: U+$unicode_str ($letter) , Width: $w */\n";
$comment = "";
$data = "";
$act_byte;
for($y = 0; $y < $h_px; $y++) {
$act_byte = 0;
$comment = "//";
$data = " ";
for($x = 0; $x < $w; $x++) {
$act_byte = $act_byte << (1 * $bpp);
$x_act = $x + $first_col;
if($x_act >= 0) {
$c = imagecolorat($glyph, $x_act , $y);
} else {
$c = 0x00;
}
$c = $c & 0xFF;
$act_byte |= $c >> (8 - $bpp);
$c = ($c >> (8 - $bpp)) << (8 - $bpp); /*Round based on bpp*/
if($c >= 192) {
$comment .= "@";
} else if($c >= 128) {
$comment .= "%";
} else if($c >= 64) {
$comment .= "+";
} else {
$comment .= ".";
}
if(((($x + 1) * $bpp) % 8) == 0 && ($x != 0 || $bpp == 8)) {
$hex = str_pad(dechex($act_byte), 2, '0', STR_PAD_LEFT);
$data .= "0x" . $hex . ", ";
$act_byte = 0;
}
}
/*Flush the remaining part*/
if(($x * $bpp) % 8 != 0) {
/*Shift bit to the left most position*/
$act_byte = $act_byte << (((8 - ($x * $bpp) % 8)));
$hex = str_pad(dechex($act_byte), 2, '0', STR_PAD_LEFT);
$data .= "0x" . $hex . ", ";
$act_byte = 0;
}
$c_glyph_bitmap .= "$data $comment \n";
}
$size = $h_px * floor($w * $bpp / 8);
if(($w * $bpp) % 8) $size += $h_px; //Extra byte to store the reminder
$c_glyph_dsc .= " {.w_px = $w,\t.glyph_index = $byte_cnt},\t/*Unicode: U+$unicode_str ($letter)*/\n";
$c_glyph_bitmap .= "\n\n";
$byte_cnt += $size;
}
function download($name, $c_data)
{
global $offline;
$file_name = $name.'.c';
if($offline) {
$file = fopen($file_name, "w");
fwrite($file, $c_data);
fclose($file);
} else {
header('Content-Type: application/text');
header('Content-disposition: attachment; filename='.$file_name);
header('Content-Length: ' . strlen($c_data));
echo($c_data);
}
}
?>