Signal
GtkPrintOperation::draw-page
Declaration
void
draw_page (
  GtkPrintOperation* self,
  GtkPrintContext* context,
  gint page_nr,
  gpointer user_data
)
Description [src]
Emitted for every page that is printed.
The signal handler must render the page_nr‘s page onto the cairo
context obtained from context using
gtk_print_context_get_cairo_context().
static void
draw_page (GtkPrintOperation *operation,
           GtkPrintContext   *context,
           int                page_nr,
           gpointer           user_data)
{
  cairo_t *cr;
  PangoLayout *layout;
  double width, text_height;
  int layout_height;
  PangoFontDescription *desc;
  cr = gtk_print_context_get_cairo_context (context);
  width = gtk_print_context_get_width (context);
  cairo_rectangle (cr, 0, 0, width, HEADER_HEIGHT);
  cairo_set_source_rgb (cr, 0.8, 0.8, 0.8);
  cairo_fill (cr);
  layout = gtk_print_context_create_pango_layout (context);
  desc = pango_font_description_from_string ("sans 14");
  pango_layout_set_font_description (layout, desc);
  pango_font_description_free (desc);
  pango_layout_set_text (layout, "some text", -1);
  pango_layout_set_width (layout, width * PANGO_SCALE);
  pango_layout_set_alignment (layout, PANGO_ALIGN_CENTER);
  pango_layout_get_size (layout, NULL, &layout_height);
  text_height = (double)layout_height / PANGO_SCALE;
  cairo_move_to (cr, width / 2,  (HEADER_HEIGHT - text_height) / 2);
  pango_cairo_show_layout (cr, layout);
  g_object_unref (layout);
}
Use gtk_print_operation_set_use_full_page() and
gtk_print_operation_set_unit() before starting the print
operation to set up the transformation of the cairo context
according to your needs.
| Default handler: The default handler is called after the handlers added via  | 
Parameters
- context
- 
            Type: GtkPrintContextThe GtkPrintContextfor the current operation.The data is owned by the caller of the function. 
- page_nr
- 
            Type: gintThe number of the currently printed page (0-based).