klayout/src/fontgen/fontgen.cc

148 lines
4.1 KiB
C++

/*
KLayout Layout Viewer
Copyright (C) 2006-2021 Matthias Koefferlein
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <QApplication>
#include <QFont>
#include <QBitmap>
#include <QPainter>
#include <QFontDialog>
#include <stdio.h>
// The system font to use
// NOTE: "Libration Mono" works only well for Ubuntu 16. The version from
// Ubuntu 18++ does not come with good hinting and is bad without AA.
static const char *font_name = "Liberation Mono";
/**
* @brief A small utility program to produce the fixed font definition file
* Run this binary and redirect the output to "laybasic/fixedFont.h".
*/
int
main (int argc, char *argv [])
{
QApplication app (argc, argv);
printf ("\n// generated by fontgen\n// DO NOT EDIT !\n\n");
printf ("\nnamespace lay {\n");
std::string table;
// 33% increments:
int sz[] = { 9, 11, 13, 16, 21, 27 };
const char *sz_name[] = { "Small", "Medium", "Large", "XLarge", "XXLarge", "XXXLarge" };
int resolutions = 6;
int font_sizes = int (sizeof (sz) / sizeof (sz[0]));
printf("\nconst int ff_resolutions = %d;\n", resolutions);
printf("const int ff_sizes = %d;\n", font_sizes);
printf("\nconst char *ff_size_name (int sz) {\n");
for (int s = 0; s < font_sizes; ++s) {
printf(" if (sz == %d) { return \"%s\"; }\n", s, sz_name [s]);
}
printf(" return \"\";\n}\n");
int os = 1;
for (int r = 1; r <= resolutions; ++r) {
for (int s = 0; s < font_sizes; ++s) {
char b[1024];
sprintf (b, " FixedFont (ff%d_height, ff%d_line_height, ff%d_width, ff%d_first_char, sizeof (ff%d_data) / sizeof (uint32_t) / (ff%d_height * ff%d_stride), ff%d_data, ff%d_stride),\n", os, os, os, os, os, os, os, os, os);
table += b;
QFont f (QString::fromLatin1 (font_name), r * sz[s]);
f.setStyleStrategy(QFont::StyleStrategy ((f.styleStrategy() & ~QFont::PreferAntialias) | QFont::NoAntialias));
QFontMetrics fm (f);
int w = fm.width (QChar::fromLatin1 ('W'));
printf ("\n// Font: %s\n", f.toString ().toLatin1 ().constData ());
printf ("const unsigned int ff%d_height = %d;\nconst unsigned int ff%d_line_height = %d;\nconst unsigned int ff%d_width = %d;\nconst unsigned int ff%d_stride = %d;\n",
os, fm.height (), os, fm.lineSpacing (), os, w, os, (w + 31) / 32);
printf ("const unsigned char ff%d_first_char = ' ';\n\nuint32_t ff%d_data [] = {\n", os, os);
for (int c = ' '; c < 256; ++c) {
QImage img (w, fm.height (), QImage::Format_RGB32);
img.fill (0xffffffff);
QPainter p (&img);
p.setPen (Qt::black);
p.setRenderHints (QPainter::TextAntialiasing, false);
p.setFont (f);
char t[2];
t[0] = c;
t[1] = 0;
p.drawText (0, fm.ascent (), QString::fromLatin1 (t));
QImage b = img.convertToFormat (QImage::Format_MonoLSB);
printf (" // %d", c);
int n = 0;
for (int i = 0; i < fm.height (); ++i) {
int ww = w;
unsigned int *sl = (unsigned int *) b.scanLine (i);
do {
if ((n % 16) == 0) {
printf ("\n ");
}
++n;
printf ("0x%x,", ww < 32 ? *sl & ((1 << ww) - 1) : *sl);
ww -= 32;
++sl;
} while (ww > 0);
}
printf ("\n");
}
printf ("};\n");
++os;
}
}
printf ("\nstatic FixedFont fonts[] = {\n%s};\n", table.c_str ());
printf ("\n} // namespace lay\n");
return 0;
}