Changes between Version 23 and Version 24 of Docs/825gen2/Dev/Networking/NetworkPrintingCUPS

Timestamp:

01/19/24 16:42:14 (22 months ago)

Author:

Don Wilson

Comment:

--

Docs/825gen2/Dev/Networking/NetworkPrintingCUPS

@@ -373 +373 @@
 
 
-
+Printing from application code.
+
+{{{
+#include <stdio.h>
+#include <cairo.h>
+#include <cairo-ps.h>
+#include <cups/cups.h>
+
+#include "cairobmp.h"
+
+// A4 width, height in points, from GhostView manual:
+//   http://www.gnu.org/software/gv/manual/html_node/Paper-Keywords-and-paper-size-in-points.html
+// #define WIDTH  595
+// #define HEIGHT 842
+// #define WIDTH 320
+#define WIDTH 480
+#define HEIGHT 500
+
+
+int main(int argc, char **argv) {
+
+        int n;
+
+        char tmpFilepath[] = "/tmp/tktprtXXXXXX";
+
+//  mkstemp(tmpFilepath);
+        strcpy(tmpFilepath, "/tmp/tkt.bmp"); // TODO Easier name just for testing
+        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_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"*/"/usr/images/cardinal_logo.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*/ 400, 300);
+        cairo_stroke(context);
+
+        // finish up
+        cairo_show_page(context);
+        cairo_destroy(context);
+        cairo_surface_flush(surface);
+
+        CairoSurfaceToBMP(surface, tmpFilepath);
+
+        cairo_surface_destroy(surface);
+
+        const char *printerName = cupsGetDefault();
+        printf("printer [%s]\n", printerName);
+
+        // cupsGetDefault is returning NULL for some reason, set printerName manually
+        printerName = "STARSK1_311";
+        n = cupsPrintFile(printerName, tmpFilepath, "cairo PS", 0, NULL);
+        // return value is job ID
+        printf("cupsPrintFile result %d\n", n);
+
+        //unlink(tmpFilepath); // TODO don't delete file to allow testing
+
+        return 0;
+}
+}}}
+
+
+