m/ptouch-print
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for printers with less than 128px printhead, make sure we dont print too much pixels

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This commit is contained in:
Dominic Radermacher 2025-05-12 18:29:56 +02:00
parent a6c67df2c9
commit 140bf0a6cc
1 changed files with 106 additions and 101 deletions
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207
src/ptouch-print.c
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@ -44,8 +44,8 @@ int needed_width(char *text, char *font, int fsz);
int print_img(ptouch_dev ptdev, gdImage *im, int chain);
int write_png(gdImage *im, const char *file);
gdImage *img_append(gdImage *in_1, gdImage *in_2);
gdImage *img_cutmark(int tape_width);
gdImage *render_text(char *font, char *line[], int lines, int tape_width);
gdImage *img_cutmark(int print_width);
gdImage *render_text(char *font, char *line[], int lines, int print_width);
void unsupported_printer(ptouch_dev ptdev);
void usage(char *progname);
int parse_args(int argc, char **argv);
@ -58,7 +58,7 @@ int verbose = 0;
int fontsize = 0;
bool debug = false;
bool chain = false;
int forced_tape_width = 0;
int forced_print_width = 0;
/* --------------------------------------------------------------------
-------------------------------------------------------------------- */
@ -152,10 +152,10 @@ int print_img(ptouch_dev ptdev, gdImage *im, int chain)
gdImage *image_load(const char *file)
{
const uint8_t png[8]={0x89,'P','N','G',0x0d,0x0a,0x1a,0x0a};
const uint8_t png[8] = {0x89,'P','N','G',0x0d,0x0a,0x1a,0x0a};
char d[10];
FILE *f;
gdImage *img=NULL;
gdImage *img = NULL;
if (!strcmp(file, "-")) {
f = stdin;
@ -166,14 +166,14 @@ gdImage *image_load(const char *file)
return NULL;
}
if (fseek(f, 0L, SEEK_SET)) { /* file is not seekable. eg 'stdin' */
img=gdImageCreateFromPng(f);
img = gdImageCreateFromPng(f);
} else {
if (fread(d, sizeof(d), 1, f) != 1) {
return NULL;
}
rewind(f);
if (memcmp(d, png, 8) == 0) {
img=gdImageCreateFromPng(f);
img = gdImageCreateFromPng(f);
}
}
fclose(f);
@ -200,14 +200,12 @@ int write_png(gdImage *im, const char *file)
int get_baselineoffset(char *text, char *font, int fsz)
{
int brect[8];
int o_offset;
int text_offset;
/* NOTE: This assumes that 'o' is always on the baseline */
gdImageStringFT(NULL, &brect[0], -1, font, fsz, 0.0, 0, 0, "o");
o_offset=brect[1];
int o_offset = brect[1];
gdImageStringFT(NULL, &brect[0], -1, font, fsz, 0.0, 0, 0, text);
text_offset=brect[1];
int text_offset = brect[1];
if (debug) {
printf(_("debug: o baseline offset - %d\n"), o_offset);
printf(_("debug: text baseline offset - %d\n"), text_offset);
@ -222,7 +220,7 @@ int get_baselineoffset(char *text, char *font, int fsz)
-------------------------------------------------------------------- */
int find_fontsize(int want_px, char *font, char *text)
{
int save=0;
int save = 0;
int brect[8];
for (int i=4; ; ++i) {
@ -230,7 +228,7 @@ int find_fontsize(int want_px, char *font, char *text)
break;
}
if (brect[1]-brect[5] <= want_px) {
save=i;
save = i;
} else {
break;
}
@ -261,12 +259,12 @@ int offset_x(char *text, char *font, int fsz)
return -brect[0];
}
gdImage *render_text(char *font, char *line[], int lines, int tape_width)
gdImage *render_text(char *font, char *line[], int lines, int print_width)
{
int brect[8];
int i, black, x=0, tmp=0, fsz=0;
int i, black, x = 0, tmp = 0, fsz = 0;
char *p;
gdImage *im=NULL;
gdImage *im = NULL;
if (debug) {
printf(_("render_text(): %i lines, font = '%s'\n"), lines, font);
@ -275,11 +273,11 @@ gdImage *render_text(char *font, char *line[], int lines, int tape_width)
printf(_("warning: font config not available\n"));
}
if (fontsize > 0) {
fsz=fontsize;
fsz = fontsize;
printf(_("setting font size=%i\n"), fsz);
} else {
for (i=0; i<lines; ++i) {
if ((tmp=find_fontsize(tape_width/lines, font, line[i])) < 0) {
for (i = 0; i < lines; ++i) {
if ((tmp = find_fontsize(print_width/lines, font, line[i])) < 0) {
printf(_("could not estimate needed font size\n"));
return NULL;
}
@ -289,48 +287,48 @@ gdImage *render_text(char *font, char *line[], int lines, int tape_width)
}
printf(_("choosing font size=%i\n"), fsz);
}
for(i=0; i<lines; ++i) {
tmp=needed_width(line[i], font_file, fsz);
for(i = 0; i < lines; ++i) {
tmp = needed_width(line[i], font_file, fsz);
if (tmp > x) {
x=tmp;
x = tmp;
}
}
im=gdImageCreatePalette(x, tape_width);
im = gdImageCreatePalette(x, print_width);
gdImageColorAllocate(im, 255, 255, 255);
black=gdImageColorAllocate(im, 0, 0, 0);
black = gdImageColorAllocate(im, 0, 0, 0);
/* gdImageStringFT(im,brect,fg,fontlist,size,angle,x,y,string) */
/* find max needed line height for ALL lines */
int max_height=0;
for (i=0; i<lines; ++i) {
if ((p=gdImageStringFT(NULL, &brect[0], -black, font, fsz, 0.0, 0, 0, line[i])) != NULL) {
for (i = 0; i < lines; ++i) {
if ((p = gdImageStringFT(NULL, &brect[0], -black, font, fsz, 0.0, 0, 0, line[i])) != NULL) {
printf(_("error in gdImageStringFT: %s\n"), p);
}
//int ofs=get_baselineoffset(line[i], font_file, fsz);
int lineheight=brect[1]-brect[5];
//int ofs = get_baselineoffset(line[i], font_file, fsz);
int lineheight = brect[1]-brect[5];
if (lineheight > max_height) {
max_height=lineheight;
max_height = lineheight;
}
}
if (debug) {
printf("debug: needed (max) height is %ipx\n", max_height);
}
if ((max_height * lines) > tape_width) {
if ((max_height * lines) > print_width) {
printf("Font size %d too large for %d lines\n", fsz, lines);
return NULL;
}
/* calculate unused pixels */
int unused_px = tape_width - (max_height * lines);
int unused_px = print_width - (max_height * lines);
/* now render lines */
for (i=0; i<lines; ++i) {
int ofs=get_baselineoffset(line[i], font_file, fsz);
//int pos=((i)*(tape_width/(lines)))+(max_height)-ofs-1;
int pos=((i)*(tape_width/(lines)))+(max_height)-ofs;
for (i = 0; i < lines; ++i) {
int ofs = get_baselineoffset(line[i], font_file, fsz);
//int pos = ((i)*(print_width/(lines)))+(max_height)-ofs-1;
int pos = ((i)*(print_width/(lines)))+(max_height)-ofs;
pos += (unused_px/lines) / 2;
if (debug) {
printf("debug: line %i pos=%i ofs=%i\n", i+1, pos, ofs);
}
int off_x = offset_x(line[i], font_file, fsz);
if ((p=gdImageStringFT(im, &brect[0], -black, font, fsz, 0.0, off_x, pos, line[i])) != NULL) {
if ((p = gdImageStringFT(im, &brect[0], -black, font, fsz, 0.0, off_x, pos, line[i])) != NULL) {
printf(_("error in gdImageStringFT: %s\n"), p);
}
}
@ -339,27 +337,27 @@ gdImage *render_text(char *font, char *line[], int lines, int tape_width)
gdImage *img_append(gdImage *in_1, gdImage *in_2)
{
gdImage *out=NULL;
int width=0;
int i_1_x=0;
int length=0;
gdImage *out = NULL;
int width = 0;
int i_1_x = 0;
int length = 0;
if (in_1 != NULL) {
width=gdImageSY(in_1);
length=gdImageSX(in_1);
i_1_x=gdImageSX(in_1);
width = gdImageSY(in_1);
length = gdImageSX(in_1);
i_1_x = gdImageSX(in_1);
}
if (in_2 != NULL) {
length += gdImageSX(in_2);
/* width should be the same, but let's be sure */
if (gdImageSY(in_2) > width) {
width=gdImageSY(in_2);
width = gdImageSY(in_2);
}
}
if ((width == 0) || (length == 0)) {
return NULL;
}
out=gdImageCreatePalette(length, width);
out = gdImageCreatePalette(length, width);
if (out == NULL) {
return NULL;
}
@ -383,36 +381,36 @@ gdImage *img_append(gdImage *in_1, gdImage *in_2)
return out;
}
gdImage *img_cutmark(int tape_width)
gdImage *img_cutmark(int print_width)
{
gdImage *out=NULL;
gdImage *out = NULL;
int style_dashed[6];
out=gdImageCreatePalette(9, tape_width);
out = gdImageCreatePalette(9, print_width);
if (out == NULL) {
return NULL;
}
gdImageColorAllocate(out, 255, 255, 255);
int black=gdImageColorAllocate(out, 0, 0, 0);
style_dashed[0]=gdTransparent;
style_dashed[1]=gdTransparent;
style_dashed[2]=gdTransparent;
style_dashed[3]=black;
style_dashed[4]=black;
style_dashed[5]=black;
int black = gdImageColorAllocate(out, 0, 0, 0);
style_dashed[0] = gdTransparent;
style_dashed[1] = gdTransparent;
style_dashed[2] = gdTransparent;
style_dashed[3] = black;
style_dashed[4] = black;
style_dashed[5] = black;
gdImageSetStyle(out, style_dashed, 6);
gdImageLine(out, 5, 0, 5, tape_width-1, gdStyled);
gdImageLine(out, 5, 0, 5, print_width - 1, gdStyled);
return out;
}
gdImage *img_padding(int tape_width, int length)
gdImage *img_padding(int print_width, int length)
{
gdImage *out=NULL;
gdImage *out = NULL;
if ((length < 1) || (length > 256)) {
length=1;
}
out=gdImageCreatePalette(length, tape_width);
out = gdImageCreatePalette(length, print_width);
if (out == NULL) {
return NULL;
}
@ -451,62 +449,62 @@ int parse_args(int argc, char **argv)
{
int lines, i;
for (i=1; i<argc; ++i) {
for (i = 1; i < argc; ++i) {
if (*argv[i] != '-') {
break;
}
if (strcmp(&argv[i][1], "-font") == 0) {
if (i+1<argc) {
font_file=argv[++i];
if (i+1 < argc) {
font_file = argv[++i];
} else {
usage(argv[0]);
}
} else if (strcmp(&argv[i][1], "-fontsize") == 0) {
if (i+1<argc) {
if (i+1 < argc) {
++i;
} else {
usage(argv[0]);
}
} else if (strcmp(&argv[i][1], "-writepng") == 0) {
if (i+1<argc) {
save_png=argv[++i];
if (i+1 < argc) {
save_png = argv[++i];
} else {
usage(argv[0]);
}
} else if (strcmp(&argv[i][1], "-force-tape-width") == 0) {
if (i+1<argc) {
forced_tape_width=strtol(argv[++i], NULL, 10);
if (i+1 < argc) {
forced_print_width = strtol(argv[++i], NULL, 10);
} else {
usage(argv[0]);
}
} else if (strcmp(&argv[i][1], "-cutmark") == 0) {
continue; /* not done here */
} else if (strcmp(&argv[i][1], "-chain") == 0) {
chain=true;
chain = true;
} else if (strcmp(&argv[i][1], "-debug") == 0) {
debug=true;
debug = true;
} else if (strcmp(&argv[i][1], "-info") == 0) {
continue; /* not done here */
} else if (strcmp(&argv[i][1], "-copies") == 0) {
if (i+1<argc) {
if (i+1 < argc) {
++i;
} else {
usage(argv[0]);
}
} else if (strcmp(&argv[i][1], "-image") == 0) {
if (i+1<argc) {
if (i+1 < argc) {
++i;
} else {
usage(argv[0]);
}
} else if (strcmp(&argv[i][1], "-pad") == 0) {
if (i+1<argc) {
if (i+1 < argc) {
++i;
} else {
usage(argv[0]);
}
} else if (strcmp(&argv[i][1], "-text") == 0) {
for (lines=0; (lines < MAX_LINES) && (i < argc); ++lines) {
for (lines = 0; (lines < MAX_LINES) && (i < argc); ++lines) {
if ((i+1 >= argc) || (argv[i+1][0] == '-')) {
break;
}
@ -522,28 +520,30 @@ int parse_args(int argc, char **argv)
usage(argv[0]);
}
}
if (forced_tape_width && !save_png) {
forced_tape_width = 0;
if (forced_print_width && !save_png) {
forced_print_width = 0;
}
return i;
}
int main(int argc, char *argv[])
{
int i, lines = 0, tape_width, copies=1;
int i, lines = 0, copies = 1, print_width = 0;
char *line[MAX_LINES];
gdImage *im=NULL;
gdImage *out=NULL;
ptouch_dev ptdev=NULL;
gdImage *im = NULL;
gdImage *out = NULL;
ptouch_dev ptdev = NULL;
setlocale(LC_ALL, "");
bindtextdomain("ptouch-print", "/usr/share/locale/");
textdomain("ptouch-print");
i=parse_args(argc, argv);
i = parse_args(argc, argv);
if (i != argc) {
usage(argv[0]);
}
if (!forced_tape_width) {
int tape_width = ptouch_get_tape_width(ptdev);
int max_print_width = ptouch_get_max_width(ptdev);
if (!forced_print_width) {
if ((ptouch_open(&ptdev)) < 0) {
return 5;
}
@ -554,28 +554,32 @@ int main(int argc, char *argv[])
printf(_("ptouch_getstatus() failed\n"));
return 1;
}
tape_width=ptouch_get_tape_width(ptdev);
print_width = tape_width;
} else {
tape_width = forced_tape_width;
print_width = forced_print_width;
}
for (i=1; i<argc; ++i) {
// do not try to print more pixels than printhead has
if (print_width > max_print_width) {
print_width = max_print_width;
}
for (i = 1; i < argc; ++i) {
if (*argv[i] != '-') {
break;
}
if (strcmp(&argv[i][1], "-font") == 0) {
if (i+1<argc) {
font_file=argv[++i];
if (i+1 < argc) {
font_file = argv[++i];
} else {
usage(argv[0]);
}
} else if (strcmp(&argv[i][1], "-fontsize") == 0) {
if (i+1<argc) {
fontsize=strtol(argv[++i], NULL, 10);
if (i+1 < argc) {
fontsize = strtol(argv[++i], NULL, 10);
} else {
usage(argv[0]);
}
} else if (strcmp(&argv[i][1], "-force-tape-width") == 0) {
if (forced_tape_width && save_png) {
if (forced_print_width && save_png) {
++i;
continue;
} else {
@ -585,6 +589,7 @@ int main(int argc, char *argv[])
i++;
continue;
} else if (strcmp(&argv[i][1], "-info") == 0) {
printf(_("maximum printing width for this printer is %ipx\n"), max_print_width);
printf(_("maximum printing width for this tape is %ipx\n"), tape_width);
printf("media type = %02x (%s)\n", ptdev->status->media_type, pt_mediatype(ptdev->status->media_type));
printf("media width = %d mm\n", ptdev->status->media_width);
@ -596,39 +601,39 @@ int main(int argc, char *argv[])
}
exit(0);
} else if (strcmp(&argv[i][1], "-image") == 0) {
if ((im=image_load(argv[++i])) == NULL) {
if ((im = image_load(argv[++i])) == NULL) {
printf(_("failed to load image file\n"));
return 1;
}
out=img_append(out, im);
out = img_append(out, im);
gdImageDestroy(im);
im = NULL;
} else if (strcmp(&argv[i][1], "-text") == 0) {
for (lines=0; (lines < MAX_LINES) && (i < argc); ++lines) {
for (lines = 0; (lines < MAX_LINES) && (i < argc); ++lines) {
if ((i+1 >= argc) || (argv[i+1][0] == '-')) {
break;
}
++i;
line[lines]=argv[i];
line[lines] = argv[i];
}
if (lines) {
if ((im=render_text(font_file, line, lines, tape_width)) == NULL) {
if ((im = render_text(font_file, line, lines, print_width)) == NULL) {
printf(_("could not render text\n"));
return 1;
}
out=img_append(out, im);
out = img_append(out, im);
gdImageDestroy(im);
im = NULL;
}
} else if (strcmp(&argv[i][1], "-cutmark") == 0) {
im=img_cutmark(tape_width);
out=img_append(out, im);
im = img_cutmark(print_width);
out = img_append(out, im);
gdImageDestroy(im);
im = NULL;
} else if (strcmp(&argv[i][1], "-pad") == 0) {
int length=strtol(argv[++i], NULL, 10);
im=img_padding(tape_width, length);
out=img_append(out, im);
im = img_padding(print_width, length);
out = img_append(out, im);
gdImageDestroy(im);
im = NULL;
} else if (strcmp(&argv[i][1], "-chain") == 0) {
@ -645,7 +650,7 @@ int main(int argc, char *argv[])
if (save_png) {
write_png(out, save_png);
} else {
for (i=0; i<copies; ++i) {
for (i = 0; i < copies; ++i) {
print_img(ptdev, out, chain);
if (ptouch_finalize(ptdev, ( chain || (i < copies-1) ) ) != 0) {
printf(_("ptouch_finalize(%d) failed\n"), chain);
@ -658,7 +663,7 @@ int main(int argc, char *argv[])
if (im != NULL) {
gdImageDestroy(im);
}
if (!forced_tape_width) {
if (!forced_print_width) {
ptouch_close(ptdev);
}
libusb_exit(NULL);