Databases
StackOverflow2013
Postsdbo
PO
 

Note that there are some explanatory texts on larger screens.

plurals
  1. PO
    primarykey
    data
    text
    <p>CUPS doesn't have its own document description API. It doesn't need one: formats like PostScript, PDF, and JPEG are first-class citizens of CUPS. You use whatever program or API you like to create a such a file, and you then send it to CUPS (with <code>lpr</code> or with the CUPS API) and CUPS will transform it to the appropriate internal format and send it to the printer. </p> <p>So, for your case, you might use a vector graphics library like <a href="http://www.cairographics.org/manual/">Cairo</a> to author PostScript, and then you send that off to CUPS for printing. Here's a simple C example:</p> <pre><code>// compile with: // gcc -Wall -o cairo_print cairo_print.c `pkg-config --cflags --libs cairo` `cups-config --cflags --libs` #include &lt;stdio.h&gt; #include &lt;cairo.h&gt; #include &lt;cairo-ps.h&gt; #include &lt;cups/cups.h&gt; // 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 int main(int argc, char** argv) { if (argc!= 2){ fprintf (stderr, "usage: %s word\n", argv[0]); return 1; } // setup char* tmpfilename = tempnam(NULL,NULL); cairo_surface_t* surface = cairo_ps_surface_create(tmpfilename, WIDTH, HEIGHT); cairo_t *context = cairo_create(surface); // draw some text cairo_select_font_face(context, "Arial Black", CAIRO_FONT_SLANT_NORMAL, CAIRO_FONT_WEIGHT_NORMAL); cairo_set_font_size(context, 30); cairo_move_to(context, WIDTH/2, HEIGHT/2); cairo_show_text(context, argv[1]); // 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, WIDTH*0.33, HEIGHT*0.33, WIDTH*0.5, WIDTH*0.5); cairo_stroke(context); // finish up cairo_show_page(context); cairo_destroy(context); cairo_surface_flush(surface); cairo_surface_destroy(surface); // print cupsPrintFile(cupsGetDefault(), tmpfilename, "cairo PS", 0, NULL); unlink(tmpfilename); return 0; } </code></pre> <p>Strictly you don't need that temporary file: the CUPS API allows you to construct a stream and you can emit the page data into that (but a file is handy for debugging).</p>
    singulars
    1. This table or related slice is empty.
    1. POLinux/CUPS printing example/tutorial?
      singulars
      1. PTQuestion
    1. PTAnswer
    1. This table or related slice is empty.
    1. USFinlay McWalter
    plurals
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. POLinux/CUPS printing example/tutorial?
      singulars
      1. PTQuestion
    1. This table or related slice is empty.
    1. VO
      singulars
      1. PO
      1. This table or related slice is empty.
      1. VTUpMod
    2. VO
      singulars
      1. PO
      1. This table or related slice is empty.
      1. VTAcceptedByOriginator
    3. VO
      singulars
      1. PO
      1. This table or related slice is empty.
      1. VTUpMod
    1. This table or related slice is empty.
 

Querying!

 
Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload