print.c

   1 #include <gtk/gtk.h>
   2
   3 #include "dive.h"
   4 #include "display.h"
   5 #include "display-gtk.h"
   6
   7 static void draw_page(GtkPrintOperation *operation,
   8                         GtkPrintContext *context,
   9                         gint page_nr,
  10                         gpointer user_data)
  11 {
  12         cairo_t *cr;
  13         PangoLayout *layout;
  14         double w, h;
  15         struct graphics_context gc = { .printer = 1 };
  16
  17         cr = gtk_print_context_get_cairo_context(context);
  18         gc.cr = cr;
  19
  20         layout=gtk_print_context_create_pango_layout(context);
  21
  22         w = gtk_print_context_get_width(context);
  23         h = gtk_print_context_get_height(context);
  24
  25         /* Do the profile on the top half of the page.. */
  26         if (current_dive)
  27                 plot(&gc, w, h/2, current_dive);
  28
  29         pango_cairo_show_layout(cr,layout);
  30         g_object_unref(layout);
  31 }
  32
  33 static void begin_print(GtkPrintOperation *operation, gpointer user_data)
  34 {
  35 }
  36
  37 static GtkPrintSettings *settings = NULL;
  38
  39 void do_print(void)
  40 {
  41         GtkPrintOperation *print;
  42         GtkPrintOperationResult res;
  43
  44         print = gtk_print_operation_new();
  45         if (settings != NULL)
  46                 gtk_print_operation_set_print_settings(print, settings);
  47         gtk_print_operation_set_n_pages(print, 1);
  48         g_signal_connect(print, "begin_print", G_CALLBACK(begin_print), NULL);
  49         g_signal_connect(print, "draw_page", G_CALLBACK(draw_page), NULL);
  50         res = gtk_print_operation_run(print, GTK_PRINT_OPERATION_ACTION_PRINT_DIALOG,
  51                                          GTK_WINDOW(main_window), NULL);
  52         if (res == GTK_PRINT_OPERATION_RESULT_APPLY) {
  53                 if (settings != NULL)
  54                         g_object_unref(settings);
  55                 settings = g_object_ref(gtk_print_operation_get_print_settings(print));
  56         }
  57         g_object_unref(print);
  58 }