First try at converting .bdf fonts
This commit is contained in:
Stefan `Sec` Zehl
parent
4ee3f4f3e2
commit
78e121337f
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@ -11,10 +11,10 @@
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# - <http://www.davidsalomon.name/DC4advertis/PKfonts.pdf> or
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# - <http://www.tug.org/TUGboat/tb06-3/tb13pk.pdf>
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use GD;
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use strict;
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use warnings;
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use Getopt::Long;
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use Module::Load;
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$|=1;
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@ -34,6 +34,7 @@ my ($verbose,$raw);
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my $size=18;
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my $font="../ttf/Ubuntu-Regular.ttf";
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$font="6x9.bdf";
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GetOptions ("size=i" => \$size, # numeric
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"font=s" => \$font, # string
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@ -56,85 +57,32 @@ HELP
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### Code starts here.
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###
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my $width=5000;
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my $height=100;
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my $xoff=90;
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my $origsize;
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my $c1size;
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my $c2size;
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my ($title,$licence)=getfontname($font);
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die "Couldn't get font name?" if !defined $title;
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our ($licence);
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our ($title,$fonts);
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our ($heightb,$heightpx);
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$title.=" ${size}pt";
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@charlist=sort { $a <=> $b } @charlist;
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#init_ttf();
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init_bdf();
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my $fonts=$title;
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$fonts=~s/[ -]//g;
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$fonts=~s/Bitstream//;
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$fonts=~s/Sans//;
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$fonts=~s/Regular//;
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die "No font name?" if !defined $title;
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my $file=$fonts;
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$file=~s/pt$//;
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$file=~y/A-Z/a-z/;
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$file.="-raw" if($raw);
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print "Rasterizing $title into ${file}.c\n";
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print "Writing $title to ${file}.c\n";
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@charlist=sort { $a <=> $b } @charlist;
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my $charlist=join("",map {chr $_} @charlist);
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### Get & optimize bounding box
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my $im = new GD::Image($width,$height);
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my $white = $im->colorAllocate(255,255,255);
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my $black = $im->colorAllocate(0,0,0);
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my @bounds = $im->stringFT(-$black, $font, $size, 0, 0, $xoff,$charlist);
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my ($mx,$my)=($bounds[2],$bounds[3]);
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my ($top,$bottom)=($bounds[7],$my);
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die "Increase width" if $mx>$width;
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die "Increase height" if $my>$width;
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die "Increase xoff" if $bounds[7]<0;
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my $found;
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# Cut whitespace at top
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do {
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$found=0;
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for my $x (0..$mx){
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if( $im->getPixel($x,$top) == 1){
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$found=1;last;
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}
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};
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$top++;
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}while($found==0);
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$top--;
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# Cut whitespace at bottom.
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do {
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$found=0;
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for my $x (0..$mx){
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if( $im->getPixel($x,$bottom) == 1){
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$found=1;last;
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}
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};
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$bottom--;
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}while($found==0);
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$bottom++;
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my $pxsize=$bottom-$top+1;
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my $byte=int(($pxsize-1)/8)+1; # Round up
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print "Removed ",$top-$bounds[7],"px at top\n";
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print "Removed ",$my-$bottom,"px at bottom\n";
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print "Chars are ",$bottom-$top+1,"px ($byte bytes) high\n";
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$heightb=int(($heightpx-1)/8)+1; # Round up
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print "Chars are ",$heightpx,"px ($heightb bytes) high\n";
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open (C,">",$file.".c")||die;
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if(defined $licence){
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$licence=~s/\n/\n * /g;
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$licence="\n/* ".$licence."\n */";
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@ -158,32 +106,18 @@ EOF
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my $offset=0;
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my $maxsz=0;
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my @offsets;
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for (1..length$charlist){
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my $char=substr($charlist,$_-1,1);
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# create a new image
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$im = new GD::Image(2*$height,$height);
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$white = $im->colorAllocate(255,255,255);
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$black = $im->colorAllocate(0,0,0);
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@bounds = $im->stringFT(-$black, $font, $size, 0, 0, $xoff,$char.$charlist);
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my @char;
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for my $y ($top..$bottom){
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for my $x (0..($bounds[2]-$mx)){
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my $px= $im->getPixel($x,$y);
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$char[$x].=$px;
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# $px=~y/01/ */; print $px;
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};
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# print "<\n";
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};
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for (0..$#charlist){
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my $char=chr $charlist[$_];
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print "### Start $char\n" if($verbose);
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# my @char=render_ttf($_);
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my @char=render_bdf($_);
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print C " /* Char ",ord $char," is ",scalar@char,"px wide \@ $offset */\n";
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$maxsz=scalar@char if scalar@char > $maxsz;
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$origsize+=$byte * scalar @char;
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$origsize+=$heightb * scalar @char;
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# Whoops. Characters are upside down.
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for (@char){
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@ -206,13 +140,13 @@ for (1..length$charlist){
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$#char--;
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$postblank++;
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};
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$c1size+=$byte*scalar@char;
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$c1size+=$heightb*scalar@char;
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my @raw;
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### Raw character data
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for (@char){
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my $h= pack("B*",$_).(chr(0).chr(0));
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for my $b (1..$byte){
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for my $b (1..$heightb){
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push @raw,ord(substr($h,$b-1,1));
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};
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};
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@ -238,7 +172,7 @@ for (1..length$charlist){
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(shift@out), (shift@out), (shift@out);
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for (@char){
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print C " ";
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printf C "0x%02x, ",shift@out for(1..$byte);
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printf C "0x%02x, ",shift@out for(1..$heightb);
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$_=~y/01/ */;
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print C " /* $_ */ \n";
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};
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@ -305,12 +239,12 @@ const struct FONT_DEF Font_$fonts = {
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%3d, /* last char */
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%s, %s, %s
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};
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",1,$pxsize,$first,$last,"${fonts}Bitmaps","${fonts}Lengths","${fonts}Extra";
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",1,$heightpx,$first,$last,"${fonts}Bitmaps","${fonts}Lengths","${fonts}Extra";
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printf C "\n";
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printf C "/* Font metadata: \n";
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printf C " * Name: %s\n", $title;
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printf C " * Height: %d px (%d bytes)\n", $bottom-$top+1,$byte;
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printf C " * Height: %d px (%d bytes)\n", $heightpx,$heightb;
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printf C " * Maximum width: %d px\n",$maxsz;
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printf C " * Storage size: %d bytes (compressed by %2d%%)\n",
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$c2size,(1-$c2size/$origsize)*100;
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@ -331,7 +265,7 @@ print "\n";
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print "Original size: $origsize\n";
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print "Simple compression: $c1size\n";
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print "PK compression: $c2size\n";
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print "Maximum character size is: $byte*$maxsz bytes\n";
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print "Maximum character size is: $heightb*$maxsz bytes\n";
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exit(0);
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@ -461,7 +395,7 @@ sub make_bytes{
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sub do_pk {
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my $char=shift;
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my $size=scalar @$char * $byte;
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my $size=scalar @$char * $heightb;
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print "Input char is $size bytes\n" if $verbose;
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$char=pk_dedup($char);
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@ -556,3 +490,178 @@ sub getfontname {
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return $fontname;
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};
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};
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######################################################################
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our $bdf;
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our %chars;
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sub init_bdf{
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($title,$licence)=($font,"<licence>");
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my($bb);
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open($bdf,"<",$font) || die;
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while(<$bdf>){
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chomp;
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/^PIXEL_SIZE (.*)/ && do { $heightpx=$1;$heightpx+=0;};
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# /^FONT_ASCENT (.*)/ && do {$fonta=$1};
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# /^FONT_DESCENT (\d+)/ && do {$fontd=$1;$byte=int(($fonta+$fontd-1)/8)+1;print "This will be a $byte byte font\n";};
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# /^DWIDTH (\d+) (\d+)/ && do {$width=$1;die "H-offset?" if $2!=0};
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/^FACE_NAME "(.*)"/ && do {$font=$1;};
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/^COPYRIGHT "(.*)"/ && do {$licence=$1;};
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/^FAMILY_NAME "(.*)"/ && do {$title=$1;};
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/^FONTBOUNDINGBOX (\d+) (\d+)/ && do {$bb="$1x$2";};
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last if /^ENDPROPERTIES/;
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};
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$title.="-".$bb;
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$fonts=$title;
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$fonts=~s/[ -]//g;
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my($bbw,$bbh,$bbx,$bby);
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my($ccode,$inchar,@bchar);
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while(<$bdf>){
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chomp;
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/^ENDCHAR/ && do {
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warn "Char $ccode has strange height?\n" if ($#bchar+1 != $bbh);
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for (1..$bby){
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push @bchar,("0"x$bbw);
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};
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for (@bchar){
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$_=("0"x$bbx).$_;
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};
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$inchar=0;
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my $tw=length($bchar[0]);
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my $th=$#bchar;
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my @tchar;
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@tchar=();
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for my $xw (1..$tw){
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my $pix="";
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for my $yw (0..$th){
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$pix.=substr($bchar[$yw],$xw-1,1);
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};
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push @tchar,$pix;
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};
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$chars{$ccode}=[@tchar];
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# print "Char: $ccode:\n",join("\n",@tchar),"\nEND\n";
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@bchar=();
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};
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if($inchar){
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my $x=unpack("B*",pack("H*",$_));
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$x=substr($x,0,$bbw);
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push @bchar,$x;
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# $x=~y/01/ */;
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# print $x,"\n";
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next;
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};
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/^BITMAP/ && do {$inchar=1;};
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/^ENCODING (.*)/ && do {$ccode=$1; };
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/^BBX (\d+) (\d+) (\d+) ([-\d]+)/ && do {$bbw=$1;$bbh=$2;$bbx=$3;$bby=$4;};
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};
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close($bdf);
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};
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sub render_bdf{
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my $ccode=$charlist[shift];
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my $tchar=$chars{$ccode};
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print "Char: $ccode:\n",join("\n",@{$tchar}),"\nEND\n";
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return @{$tchar};
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};
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######################################################################
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our($charlist);
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our($height,$width,$xoff);
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our($mx,$my);
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our($top,$bottom);
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sub init_ttf {
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load GD;
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($height,$width,$xoff)=(100,5000,90);
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($title,$licence)=getfontname($font);
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die "Couldn't get font name?" if !defined $title;
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$title.=" ${size}pt";
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$fonts=$title;
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$fonts=~s/[ -]//g;
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$fonts=~s/Bitstream//;
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$fonts=~s/Sans//;
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$fonts=~s/Regular//;
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$charlist=join("",map {chr $_} @charlist);
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### Get & optimize bounding box
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my $im = new GD::Image($width,$height);
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my $white = $im->colorAllocate(255,255,255);
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my $black = $im->colorAllocate(0,0,0);
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my @bounds = $im->stringFT(-$black, $font, $size, 0, 0, $xoff,$charlist);
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($mx,$my)=($bounds[2],$bounds[3]);
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($top,$bottom)=($bounds[7],$my);
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die "Increase width" if $mx>$width;
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die "Increase height" if $my>$width;
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die "Increase xoff" if $bounds[7]<0;
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my $found;
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# Cut whitespace at top
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do {
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$found=0;
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for my $x (0..$mx){
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if( $im->getPixel($x,$top) == 1){
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$found=1;last;
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}
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};
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$top++;
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}while($found==0);
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$top--;
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# Cut whitespace at bottom.
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do {
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$found=0;
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for my $x (0..$mx){
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if( $im->getPixel($x,$bottom) == 1){
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$found=1;last;
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}
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};
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$bottom--;
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}while($found==0);
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$bottom++;
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$heightpx=$bottom-$top+1;
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print "Removed ",$top-$bounds[7],"px at top\n";
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print "Removed ",$my-$bottom,"px at bottom\n";
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};
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sub render_ttf{
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my $char=substr($charlist,shift,1);
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# create a new image
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my $im = new GD::Image(2*$height,$height);
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my $white = $im->colorAllocate(255,255,255);
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my $black = $im->colorAllocate(0,0,0);
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my @bounds = $im->stringFT(-$black, $font, $size, 0, 0, $xoff,$char.$charlist);
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my @char;
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for my $y ($top..$bottom){
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for my $x (0..($bounds[2]-$mx)){
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my $px= $im->getPixel($x,$y);
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$char[$x].=$px;
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# $px=~y/01/ */; print $px;
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};
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# print "<\n";
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};
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return @char;
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};
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