Changes between Version 3 and Version 4 of Docs/825gen2/Dev/Devices/USB/PrintersCUPS

Timestamp:

01/12/24 12:29:53 (10 months ago)

Author:

Don Wilson

Comment:

--

Docs/825gen2/Dev/Devices/USB/PrintersCUPS

@@ -114 +114 @@
 
 cardinal_logo.bmp
+
+Printed successfully but rotated and enlarged
+
+Found an example of cups printing on stackoverflow.com. After compile the example for the 825 and after making several changing get it to work to programatically print a ticket.
+
+{{{
+#include <stdio.h>
+#include <cairo.h>
+#include <cairo-ps.h>
+#include <cups/cups.h>
+
+#include "cairobmp.h"
+
+#define WIDTH 320
+#define HEIGHT 500
+
+
+#define TEST_BMP_FILENAME "/tmp/tkt9.bmp"
+
+
+int main(int argc, char** argv) {
+
+  int n;
+
+  char tmpFilepath[] = "/tmp/tktprtXXXXXX";
+
+  mkstemp(tmpFilepath);
+ printf("tmpFilename [%s]\n", tmpFilepath);
+
+
+  // cairo_surface_t* surface = cairo_ps_surface_create(tmpfilename, WIDTH, HEIGHT);
+  cairo_surface_t* surface = cairo_image_surface_create(/*CAIRO_FORMAT_ARGB32*/ /*CAIRO_FORMAT_RGB24*/  CAIRO_FORMAT_A1, WIDTH, HEIGHT);
+  printf("after surface create %d\n", cairo_surface_get_type(surface));
+  cairo_t *context = cairo_create(surface);
+
+
+  LoadBMPToSurface("/usr/images/bird.bmp", surface, 0, 0);
+
+  // draw some text
+  cairo_select_font_face(context, "Arial Black", CAIRO_FONT_SLANT_NORMAL, CAIRO_FONT_WEIGHT_NORMAL);
+  cairo_set_font_size(context, 30);
+  int x = 20;
+  int y = 140;
+  cairo_move_to(context, x, y);
+  cairo_show_text(context, "Item 1"); // the text we got as a parameter
+  y += 30;
+  cairo_move_to(context, x, y);
+  cairo_show_text(context, "Item 2"); // the text we got as a parameter
+  y += 30;
+  cairo_move_to(context, x, y);
+  cairo_show_text(context, "Item 3"); // the text we got as a parameter
+
+  // draw a dotted box
+  const double pattern[] = {15.0, 10.0};
+  cairo_set_dash(context, pattern, 2, 0);
+  cairo_set_line_width(context, 5);
+  cairo_rectangle(context, 5, 105, 280, 300);
+  cairo_stroke(context);
+
+  // finish up
+  cairo_show_page(context);
+  cairo_destroy(context);
+  cairo_surface_flush(surface);
+
+   CairoSurfaceToBMP(surface, /*"/tmp/tkt9.bmp"*/ tmpFilepath);
+
+ // n = cairo_surface_write_to_png (surface, "/tmp/tkt.png");
+ // printf("write_to_png result %d\n", n);
+
+
+  cairo_surface_destroy(surface);
+
+  const char* printerName = cupsGetDefault();
+  printf("printer [%s]\n", printerName);
+
+  // cupsGetDefault is returning NULL
+  printerName = "STARSK1_311";
+  n = cupsPrintFile(printerName, tmpFilepath, "cairo PS", 0, NULL);
+  // return value is job ID
+  printf("cupsPrintFile result %d\n", n);
+
+  //unlink(tmpFilepath);
+
+  return 0;
+}
+
+}}}
+
+
+