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408 lines
11 KiB
C
408 lines
11 KiB
C
/*
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ptouch-print - Print labels with images or text on a Brother P-Touch
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Copyright (C) 2015-2017 Dominic Radermacher <blip@mockmoon-cybernetics.ch>
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This program is free software; you can redistribute it and/or modify it
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under the terms of the GNU General Public License version 3 as
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published by the Free Software Foundation
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This program is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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See the GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software Foundation,
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Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include <stdio.h> /* printf() */
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#include <stdlib.h> /* exit(), malloc() */
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#include <string.h> /* strcmp(), memcmp() */
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#include <sys/types.h> /* open() */
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#include <sys/stat.h> /* open() */
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#include <fcntl.h> /* open() */
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#include <gd.h>
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#include "config.h"
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#include "gettext.h" /* gettext(), ngettext() */
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#include "ptouch.h"
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#define _(s) gettext(s)
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#define MAX_LINES 4 /* maybe this should depend on tape size */
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gdImage *image_load(const char *file);
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void rasterline_setpixel(uint8_t rasterline[16], int pixel);
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int get_baselineoffset(char *text, char *font, int fsz);
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int find_fontsize(int want_px, char *font, char *text);
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int needed_width(char *text, char *font, int fsz);
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int print_img(ptouch_dev ptdev, gdImage *im);
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int write_png(gdImage *im, const char *file);
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gdImage *render_text(char *font, char *line[], int lines, int tape_width);
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void usage(char *progname);
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int parse_args(int argc, char **argv);
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// char *font_file="/usr/share/fonts/TTF/Ubuntu-M.ttf";
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// char *font_file="Ubuntu:medium";
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char *font_file="DejaVuSans";
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char *save_png=NULL;
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int verbose=0;
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int fontsize=0;
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/* --------------------------------------------------------------------
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-------------------------------------------------------------------- */
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void rasterline_setpixel(uint8_t rasterline[16], int pixel)
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{
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rasterline[15-(pixel/8)] |= 1<<(pixel%8);
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return;
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}
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void unsupported_printer(ptouch_dev ptdev)
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{
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printf(_("your printer unfortunately is not supported by this tool\n"));
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printf(_("the rasterdata a transferred in some other (unknown) format\n"));
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exit(1);
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}
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int print_img(ptouch_dev ptdev, gdImage *im)
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{
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int d,i,k,offset,tape_width;
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uint8_t rasterline[16];
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if ((ptdev->devinfo->flags & FLAG_UNSUP_RASTER) == FLAG_UNSUP_RASTER) {
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unsupported_printer(ptdev);
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}
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tape_width=ptouch_getmaxwidth(ptdev);
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/* find out whether color 0 or color 1 is darker */
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d=(gdImageRed(im,1)+gdImageGreen(im,1)+gdImageBlue(im,1) < gdImageRed(im,0)+gdImageGreen(im,0)+gdImageBlue(im,0))?1:0;
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if (gdImageSY(im) > tape_width) {
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printf(_("image is too large (%ipx x %ipx)\n"), gdImageSX(im), gdImageSY(im));
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printf(_("maximum printing width for this tape is %ipx\n"), tape_width);
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return -1;
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}
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offset=64-(gdImageSY(im)/2); /* always print centered */
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if (ptouch_rasterstart(ptdev) != 0) {
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printf(_("ptouch_rasterstart() failed\n"));
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return -1;
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}
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for (k=0; k<gdImageSX(im); k+=1) {
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memset(rasterline, 0, sizeof(rasterline));
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for (i=0; i<gdImageSY(im); i+=1) {
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if (gdImageGetPixel(im, k, gdImageSY(im)-1-i) == d) {
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rasterline_setpixel(rasterline, offset+i);
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}
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}
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if (ptouch_sendraster(ptdev, rasterline, 16) != 0) {
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printf(_("ptouch_send() failed\n"));
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return -1;
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}
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}
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return 0;
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}
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/* --------------------------------------------------------------------
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Function image_load()
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Description detect the type of a image and try to load it
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Last update 2005-10-16
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Status Working, should add debug info
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-------------------------------------------------------------------- */
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gdImage *image_load(const char *file)
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{
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const uint8_t png[8]={0x89,'P','N','G',0x0d,0x0a,0x1a,0x0a};
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char d[10];
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FILE *f;
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gdImage *img=NULL;
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if ((f = fopen(file, "rb")) == NULL) { /* error cant open file */
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return NULL;
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}
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if (fread(d, sizeof(d), 1, f) != 1) {
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return NULL;
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}
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rewind(f);
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if (memcmp(d, png, 8) == 0) {
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img=gdImageCreateFromPng(f);
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}
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fclose(f);
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return img;
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}
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int write_png(gdImage *im, const char *file)
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{
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FILE *f;
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if ((f = fopen(file, "wb")) == NULL) {
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printf(_("writing image '%s' failed\n"), file);
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return -1;
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}
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gdImagePng(im, f);
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fclose(f);
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return 0;
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}
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/* --------------------------------------------------------------------
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Find out the difference in pixels between a "normal" char and one
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that goes below the font baseline
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-------------------------------------------------------------------- */
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int get_baselineoffset(char *text, char *font, int fsz)
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{
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int brect[8];
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if (strpbrk(text, "QgjpqyQµ") == NULL) { /* if we have none of these */
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return 0; /* we don't need an baseline offset */
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} /* else we need to calculate it */
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gdImageStringFT(NULL, &brect[0], -1, font, fsz, 0.0, 0, 0, "o");
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int tmp=brect[1]-brect[5];
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gdImageStringFT(NULL, &brect[0], -1, font, fsz, 0.0, 0, 0, "g");
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return (brect[1]-brect[5])-tmp;
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}
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/* --------------------------------------------------------------------
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Find out which fontsize we need for a given font to get a
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specified pixel size
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NOTE: This does NOT work for some UTF-8 chars like µ
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-------------------------------------------------------------------- */
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int find_fontsize(int want_px, char *font, char *text)
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{
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int save=0;
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int brect[8];
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for (int i=4; ; i++) {
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if (gdImageStringFT(NULL, &brect[0], -1, font, i, 0.0, 0, 0, text) != NULL) {
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break;
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}
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if (brect[1]-brect[5] <= want_px) {
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save=i;
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} else {
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break;
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}
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}
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if (save == 0) {
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return -1;
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}
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return save;
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}
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int needed_width(char *text, char *font, int fsz)
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{
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int brect[8];
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if (gdImageStringFT(NULL, &brect[0], -1, font, fsz, 0.0, 0, 0, text) != NULL) {
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return -1;
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}
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return brect[2]-brect[0];
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}
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gdImage *render_text(char *font, char *line[], int lines, int tape_width)
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{
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int brect[8];
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int i, black, x=0, tmp, fsz=0, ofs;
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char *p;
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gdImage *im=NULL;
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// printf(_("%i lines, font = '%s'\n"), lines, font);
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if (gdFTUseFontConfig(1) != GD_TRUE) {
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printf(_("warning: font config not available\n"));
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}
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if (fontsize > 0) {
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fsz=fontsize;
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printf(_("setting font size=%i\n"), fsz);
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} else {
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for (i=0; i<lines; i++) {
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if ((tmp=find_fontsize(tape_width/lines, font, line[i])) < 0) {
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printf(_("could not estimate needed font size\n"));
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return NULL;
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}
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if ((fsz == 0) || (tmp < fsz)) {
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fsz=tmp;
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}
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}
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printf(_("choosing font size=%i\n"), fsz);
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}
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for(i=0; i<lines; i++) {
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tmp=needed_width(line[i], font_file, fsz);
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if (tmp > x) {
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x=tmp;
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}
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}
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im=gdImageCreatePalette(x, tape_width);
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gdImageColorAllocate(im, 255, 255, 255);
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black=gdImageColorAllocate(im, 0, 0, 0);
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/* gdImageStringFT(im,brect,fg,fontlist,size,angle,x,y,string) */
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for (i=0; i<lines; i++) {
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if ((p=gdImageStringFT(NULL, &brect[0], -black, font, fsz, 0.0, 0, 0, line[i])) != NULL) {
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printf(_("error in gdImageStringFT: %s\n"), p);
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}
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tmp=brect[1]-brect[5];
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ofs=get_baselineoffset(line[i], font_file, fsz);
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// printf("line %i height = %ipx, pos = %i\n", i+1, tmp, i*(tape_width/lines)+tmp-ofs-1);
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if ((p=gdImageStringFT(im, &brect[0], -black, font, fsz, 0.0, 0, i*(tape_width/lines)+tmp-ofs-1, line[i])) != NULL) {
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printf(_("error in gdImageStringFT: %s\n"), p);
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}
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}
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return im;
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}
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void usage(char *progname)
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{
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printf("usage: %s [options] <print-command(s)>\n", progname);
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printf("options:\n");
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printf("\t--font <file>\t\tuse font <file> or <name>\n");
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printf("\t--writepng <file>\tinstead of printing, write output to png file\n");
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printf("\t\t\t\tThis currently works only when using\n\t\t\t\tEXACTLY ONE --text statement\n");
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printf("print-commands:\n");
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printf("\t--image <file>\t\tprint the given image which must be a 2 color\n");
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printf("\t\t\t\t(black/white) png\n");
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printf("\t--text <text>\t\tPrint 1-4 lines of text.\n");
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printf("\t\t\t\tIf the text contains spaces, use quotation marks\n\t\t\t\taround it.\n");
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printf("\t--cutmark\t\tPrint a mark where the tape should be cut\n");
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printf("\t--fontsize\t\tManually set fontsize\n");
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exit(1);
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}
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/* here we don't print anything, but just try to catch syntax errors */
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int parse_args(int argc, char **argv)
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{
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int lines, i;
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for (i=1; i<argc; i++) {
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if (*argv[i] != '-') {
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break;
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}
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if (strcmp(&argv[i][1], "-font") == 0) {
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if (i+1<argc) {
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font_file=argv[++i];
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} else {
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usage(argv[0]);
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}
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} else if (strcmp(&argv[i][1], "-fontsize") == 0) {
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if (i+1<argc) {
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i++;
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} else {
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usage(argv[0]);
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}
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} else if (strcmp(&argv[i][1], "-writepng") == 0) {
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if (i+1<argc) {
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save_png=argv[++i];
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} else {
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usage(argv[0]);
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}
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} else if (strcmp(&argv[i][1], "-cutmark") == 0) {
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continue; /* not done here */
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} else if (strcmp(&argv[i][1], "-info") == 0) {
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continue; /* not done here */
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} else if (strcmp(&argv[i][1], "-image") == 0) {
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if (i+1<argc) {
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i++;
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} else {
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usage(argv[0]);
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}
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} else if (strcmp(&argv[i][1], "-text") == 0) {
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for (lines=0; (lines < MAX_LINES) && (i < argc); lines++) {
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if ((i+1 >= argc) || (argv[i+1][0] == '-')) {
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break;
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}
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i++;
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}
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} else if (strcmp(&argv[i][1], "-version") == 0) {
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printf(_("ptouch-print version %s by Dominic Radermacher\n"), VERSION);
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exit(0);
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} else {
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usage(argv[0]);
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}
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}
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return i;
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}
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int main(int argc, char *argv[])
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{
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int i, lines = 0, tape_width;
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char *line[MAX_LINES];
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gdImage *im=NULL;
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ptouch_dev ptdev=NULL;
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setlocale(LC_ALL, "");
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bindtextdomain(PACKAGE, LOCALEDIR);
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textdomain(PACKAGE);
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i=parse_args(argc, argv);
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if (i != argc) {
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usage(argv[0]);
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}
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if ((ptouch_open(&ptdev)) < 0) {
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return 5;
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}
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if (ptouch_init(ptdev) != 0) {
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printf(_("ptouch_init() failed\n"));
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}
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if (ptouch_getstatus(ptdev) != 0) {
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printf(_("ptouch_getstatus() failed\n"));
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return 1;
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}
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tape_width=ptouch_getmaxwidth(ptdev);
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for (i=1; i<argc; i++) {
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if (*argv[i] != '-') {
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break;
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}
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if (strcmp(&argv[i][1], "-font") == 0) {
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if (i+1<argc) {
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font_file=argv[++i];
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} else {
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usage(argv[0]);
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}
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} else if (strcmp(&argv[i][1], "-fontsize") == 0) {
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if (i+1<argc) {
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fontsize=strtol(argv[++i], NULL, 10);
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} else {
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usage(argv[0]);
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}
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} else if (strcmp(&argv[i][1], "-writepng") == 0) {
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if (i+1<argc) {
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save_png=argv[++i];
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} else {
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usage(argv[0]);
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}
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} else if (strcmp(&argv[i][1], "-info") == 0) {
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printf(_("maximum printing width for this tape is %ipx\n"), tape_width);
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exit(0);
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} else if (strcmp(&argv[i][1], "-image") == 0) {
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im=image_load(argv[++i]);
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} else if (strcmp(&argv[i][1], "-text") == 0) {
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for (lines=0; (lines < MAX_LINES) && (i < argc); lines++) {
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if ((i+1 >= argc) || (argv[i+1][0] == '-')) {
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break;
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}
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i++;
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line[lines]=argv[i];
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}
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} else if (strcmp(&argv[i][1], "-cutmark") == 0) {
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ptouch_cutmark(ptdev);
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} else {
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usage(argv[0]);
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}
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}
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if (lines) {
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if ((im=render_text(font_file, line, lines, tape_width)) == NULL) {
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printf(_("could not render text\n"));
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return 1;
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}
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}
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if (save_png) {
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write_png(im, save_png);
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} else {
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print_img(ptdev, im);
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if (ptouch_eject(ptdev) != 0) {
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printf(_("ptouch_eject() failed\n"));
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return -1;
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}
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}
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gdImageDestroy(im);
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ptouch_close(ptdev);
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libusb_exit(NULL);
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return 0;
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}
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