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Code Issues Releases Activity

preparing for support of printers with 360 dpi

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This commit is contained in:
Dominic Radermacher
2026-03-08 10:26:46 +01:00
parent 25e7a8c876
commit 9cd8a5bc22
6 changed files with 278 additions and 135 deletions
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src/libptouch.c
+29
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@@ -381,6 +381,8 @@ int ptouch_getstatus(ptouch_dev ptdev, int timeout)
ptdev->tape_width_px=0;
for (i=0; tape_info[i].mm > 0; ++i) {
if (tape_info[i].mm == buf[10]) {
/* TODO: should be adjusted according
to printer dpi ! */
ptdev->tape_width_px=tape_info[i].px;
}
}
@@ -409,6 +411,33 @@ int ptouch_getstatus(ptouch_dev ptdev, int timeout)
return -1;
}
int ptouch_get_dpi(ptouch_dev ptdev)
{
if (!ptdev) {
fprintf(stderr, _("debug: called ptouch_get_dpi() with NULL ptdev\n"));
return 0;
}
return ptdev->devinfo->dpi;
}
/* TODO: The actual number of maximum lines should be calculated according to
printer resolution, tapewidth and fontsize */
/* printer resolution is planned to be taken into account when calculating
tape_width in px */
int ptouch_get_max_lines(ptouch_dev ptdev, int fontsize_px)
{
if (!ptdev) {
fprintf(stderr, _("debug: called ptouch_get_max_lines() with NULL ptdev\n"));
return 0;
}
if (fontsize_px <= 0) {
fprintf(stderr, _("debug: called ptouch_get_max_lines() with invalid fontsize_px\n"));
return 0;
}
fprintf(stderr, _("debug: calculated max lines %d \n"), ptdev->tape_width_px / fontsize_px);
return 4;
}
size_t ptouch_get_tape_width(ptouch_dev ptdev)
{
if (!ptdev) {