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/*====================================================================*
- Copyright (C) 2001 Leptonica. All rights reserved.
-
- Redistribution and use in source and binary forms, with or without
- modification, are permitted provided that the following conditions
- are met:
- 1. Redistributions of source code must retain the above copyright
- notice, this list of conditions and the following disclaimer.
- 2. Redistributions in binary form must reproduce the above
- copyright notice, this list of conditions and the following
- disclaimer in the documentation and/or other materials
- provided with the distribution.
-
- THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL ANY
- CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
- EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
- PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
- PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
- OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
- NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
- SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*====================================================================*/
/*
* genfonts_reg.c
*
* This regtest is for the generation of bitmap font characters that
* are presently used for annotating images.
*
* The tiff images of bitmaps fonts, which are used as input
* to this generator, are supplied in Leptonica in the prog/fonts
* directory. The tiff images were generated from the PostScript files
* in that directory, using the shell script prog/ps2tiff. If you
* want to generate other fonts, modify the PostScript files
* and use ps2tiff. ps2tiff uses GhostScript.
*
* The input tiff images are stored either as files in prog/fonts/,
* or as compiled C strings in bmfdata.h. Each image stores 94 of the
* 95 printable characters, all in one of 9 sizes (ranging from 4 to 20
* points). These are programmatically split into individual characters,
* and the baselines are computed for each character. Baselines are
* required to properly render them.
*/
#ifdef HAVE_CONFIG_H
#include <config_auto.h>
#endif /* HAVE_CONFIG_H */
#include "allheaders.h"
#include "bmfdata.h"
#define NFONTS 9
const l_int32 sizes[] = {4, 6, 8, 10, 12, 14, 16, 18, 20};
int main(int argc,
char **argv)
{
char buf[512];
char *pathname, *datastr, *formstr;
l_uint8 *data1, *data2;
l_int32 i, bl1, bl2, bl3, sbytes, formbytes, fontsize, rbytes;
size_t nbytes;
PIX *pix1, *pix2, *pixd;
PIXA *pixa;
L_REGPARAMS *rp;
#if !defined(HAVE_LIBPNG)
L_ERROR("This test requires libpng to run.\n", "genfonts_reg");
exit(77);
#endif
if (regTestSetup(argc, argv, &rp))
return 1;
/* ------------ Generate pixa char bitmap files from file ----------- */
lept_rmdir("lept/filefonts");
lept_mkdir("lept/filefonts");
for (i = 0; i < 9; i++) {
pixaSaveFont("fonts", "/tmp/lept/filefonts", sizes[i]);
pathname = pathJoin("/tmp/lept/filefonts", outputfonts[i]);
pixa = pixaRead(pathname);
if (rp->display) {
lept_stderr("Found %d chars in font size %d\n",
pixaGetCount(pixa), sizes[i]);
}
pixd = pixaDisplayTiled(pixa, 1500, 0, 15);
regTestWritePixAndCheck(rp, pixd, IFF_PNG); /* 0 - 8 */
if (i == 2) pixDisplayWithTitle(pixd, 100, 0, NULL, rp->display);
pixDestroy(&pixd);
pixaDestroy(&pixa);
lept_free(pathname);
}
lept_rmdir("lept/filefonts");
/* ---------- Generate pixa char bitmap files from string --------- */
lept_rmdir("lept/strfonts");
lept_mkdir("lept/strfonts");
for (i = 0; i < 9; i++) {
pixaSaveFont(NULL, "/tmp/lept/strfonts", sizes[i]);
pathname = pathJoin("/tmp/lept/strfonts", outputfonts[i]);
pixa = pixaRead(pathname);
if (rp->display) {
lept_stderr("Found %d chars in font size %d\n",
pixaGetCount(pixa), sizes[i]);
}
pixd = pixaDisplayTiled(pixa, 1500, 0, 15);
regTestWritePixAndCheck(rp, pixd, IFF_PNG); /* 9 - 17 */
if (i == 2) pixDisplayWithTitle(pixd, 100, 150, NULL, rp->display);
pixDestroy(&pixd);
pixaDestroy(&pixa);
lept_free(pathname);
}
/* ----- Use pixaGetFont() and write the result out -----*/
lept_rmdir("lept/pafonts");
lept_mkdir("lept/pafonts");
for (i = 0; i < 9; i++) {
pixa = pixaGetFont("/tmp/lept/strfonts", sizes[i], &bl1, &bl2, &bl3);
lept_stderr("Baselines are at: %d, %d, %d\n", bl1, bl2, bl3);
snprintf(buf, sizeof(buf), "/tmp/lept/pafonts/chars-%d.pa", sizes[i]);
pixaWrite(buf, pixa);
if (i == 2) {
pixd = pixaDisplayTiled(pixa, 1500, 0, 15);
pixDisplayWithTitle(pixd, 100, 300, NULL, rp->display);
pixDestroy(&pixd);
}
pixaDestroy(&pixa);
}
lept_rmdir("lept/pafonts");
/* ------- Generate 4/3 encoded ascii strings from tiff files ------ */
lept_rmdir("lept/encfonts");
lept_mkdir("lept/encfonts");
for (i = 0; i < 9; i++) {
fontsize = 2 * i + 4;
pathname = pathJoin("fonts", inputfonts[i]);
data1 = l_binaryRead(pathname, &nbytes);
datastr = encodeBase64(data1, nbytes, &sbytes);
if (rp->display)
lept_stderr("nbytes = %lu, sbytes = %d\n",
(unsigned long)nbytes, sbytes);
formstr = reformatPacked64(datastr, sbytes, 4, 72, 1, &formbytes);
snprintf(buf, sizeof(buf), "/tmp/lept/encfonts/formstr_%d.txt",
fontsize);
l_binaryWrite(buf, "w", formstr, formbytes);
regTestCheckFile(rp, buf); /* 18-26 */
if (i == 8)
pix1 = pixReadMem(data1, nbytes); /* original */
lept_free(data1);
data2 = decodeBase64(datastr, sbytes, &rbytes);
snprintf(buf, sizeof(buf), "/tmp/lept/encfonts/image_%d.tif", fontsize);
l_binaryWrite(buf, "w", data2, rbytes);
if (i == 8) {
pix2 = pixReadMem(data2, rbytes); /* encode/decode */
regTestComparePix(rp, pix1, pix2); /* 27 */
pixDestroy(&pix1);
pixDestroy(&pix2);
}
lept_free(data2);
lept_free(pathname);
lept_free(datastr);
lept_free(formstr);
}
return regTestCleanup(rp);
}
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