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