Pileus Git - ~andy/gtk/blob - modules/printbackends/file/gtkprintbackendfile.c

   1 /* GTK - The GIMP Toolkit
   2  * gtkprintbackendfile.c: Default implementation of GtkPrintBackend
   3  * for printing to a file
   4  * Copyright (C) 2003, Red Hat, Inc.
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the
  18  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  19  * Boston, MA 02111-1307, USA.
  20  */
  21
  22 #include <config.h>
  23
  24 #include <unistd.h>
  25 #include <sys/types.h>
  26 #include <sys/stat.h>
  27 #include <fcntl.h>
  28 #include <stdlib.h>
  29 #include <string.h>
  30
  31 #include <errno.h>
  32 #include <cairo.h>
  33 #include <cairo-pdf.h>
  34 #include <cairo-ps.h>
  35
  36 #include <glib/gi18n-lib.h>
  37
  38 #include "gtkprintoperation.h"
  39
  40 #include "gtkprintbackend.h"
  41 #include "gtkprintbackendfile.h"
  42
  43 #include "gtkprinter.h"
  44 #include "gtkprinter-private.h"
  45
  46 typedef struct _GtkPrintBackendFileClass GtkPrintBackendFileClass;
  47
  48 #define GTK_PRINT_BACKEND_FILE_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST ((klass), GTK_TYPE_PRINT_BACKEND_FILE, GtkPrintBackendFileClass))
  49 #define GTK_IS_PRINT_BACKEND_FILE_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GTK_TYPE_PRINT_BACKEND_FILE))
  50 #define GTK_PRINT_BACKEND_FILE_GET_CLASS(obj)  (G_TYPE_INSTANCE_GET_CLASS ((obj), GTK_TYPE_PRINT_BACKEND_FILE, GtkPrintBackendFileClass))
  51
  52 #define _STREAM_MAX_CHUNK_SIZE 8192
  53
  54 static GType print_backend_file_type = 0;
  55
  56 struct _GtkPrintBackendFileClass
  57 {
  58   GtkPrintBackendClass parent_class;
  59 };
  60
  61 struct _GtkPrintBackendFile
  62 {
  63   GtkPrintBackend parent_instance;
  64 };
  65
  66 typedef enum
  67 {
  68   FORMAT_PDF,
  69   FORMAT_PS,
  70   N_FORMATS
  71 } OutputFormat;
  72
  73 static const gchar* formats[N_FORMATS] =
  74 {
  75   "pdf",
  76   "ps"
  77 };
  78
  79 static GObjectClass *backend_parent_class;
  80
  81 static void                 gtk_print_backend_file_class_init      (GtkPrintBackendFileClass *class);
  82 static void                 gtk_print_backend_file_init            (GtkPrintBackendFile      *impl);
  83 static void                 file_printer_get_settings_from_options (GtkPrinter              *printer,
  84                                                                     GtkPrinterOptionSet     *options,
  85                                                                     GtkPrintSettings        *settings);
  86 static GtkPrinterOptionSet *file_printer_get_options               (GtkPrinter              *printer,
  87                                                                     GtkPrintSettings        *settings,
  88                                                                     GtkPageSetup            *page_setup,
  89                                                                     GtkPrintCapabilities     capabilities);
  90 static void                 file_printer_prepare_for_print         (GtkPrinter              *printer,
  91                                                                     GtkPrintJob             *print_job,
  92                                                                     GtkPrintSettings        *settings,
  93                                                                     GtkPageSetup            *page_setup);
  94 static void                 gtk_print_backend_file_print_stream    (GtkPrintBackend         *print_backend,
  95                                                                     GtkPrintJob             *job,
  96                                                                     GIOChannel              *data_io,
  97                                                                     GtkPrintJobCompleteFunc  callback,
  98                                                                     gpointer                 user_data,
  99                                                                     GDestroyNotify           dnotify);
 100 static cairo_surface_t *    file_printer_create_cairo_surface      (GtkPrinter              *printer,
 101                                                                     GtkPrintSettings        *settings,
 102                                                                     gdouble                  width,
 103                                                                     gdouble                  height,
 104                                                                     GIOChannel              *cache_io);
 105
 106 static GList *              file_printer_list_papers               (GtkPrinter              *printer);
 107
 108 static void
 109 gtk_print_backend_file_register_type (GTypeModule *module)
 110 {
 111   static const GTypeInfo print_backend_file_info =
 112   {
 113     sizeof (GtkPrintBackendFileClass),
 114     NULL,               /* base_init */
 115     NULL,               /* base_finalize */
 116     (GClassInitFunc) gtk_print_backend_file_class_init,
 117     NULL,               /* class_finalize */
 118     NULL,               /* class_data */
 119     sizeof (GtkPrintBackendFile),
 120     0,          /* n_preallocs */
 121     (GInstanceInitFunc) gtk_print_backend_file_init,
 122   };
 123
 124   print_backend_file_type = g_type_module_register_type (module,
 125                                                          GTK_TYPE_PRINT_BACKEND,
 126                                                          "GtkPrintBackendFile",
 127                                                          &print_backend_file_info, 0);
 128 }
 129
 130 G_MODULE_EXPORT void
 131 pb_module_init (GTypeModule *module)
 132 {
 133   gtk_print_backend_file_register_type (module);
 134 }
 135
 136 G_MODULE_EXPORT void
 137 pb_module_exit (void)
 138 {
 139
 140 }
 141
 142 G_MODULE_EXPORT GtkPrintBackend *
 143 pb_module_create (void)
 144 {
 145   return gtk_print_backend_file_new ();
 146 }
 147
 148 /*
 149  * GtkPrintBackendFile
 150  */
 151 GType
 152 gtk_print_backend_file_get_type (void)
 153 {
 154   return print_backend_file_type;
 155 }
 156
 157 /**
 158  * gtk_print_backend_file_new:
 159  *
 160  * Creates a new #GtkPrintBackendFile object. #GtkPrintBackendFile
 161  * implements the #GtkPrintBackend interface with direct access to
 162  * the filesystem using Unix/Linux API calls
 163  *
 164  * Return value: the new #GtkPrintBackendFile object
 165  **/
 166 GtkPrintBackend *
 167 gtk_print_backend_file_new (void)
 168 {
 169   return g_object_new (GTK_TYPE_PRINT_BACKEND_FILE, NULL);
 170 }
 171
 172 static void
 173 gtk_print_backend_file_class_init (GtkPrintBackendFileClass *class)
 174 {
 175   GtkPrintBackendClass *backend_class = GTK_PRINT_BACKEND_CLASS (class);
 176
 177   backend_parent_class = g_type_class_peek_parent (class);
 178
 179   backend_class->print_stream = gtk_print_backend_file_print_stream;
 180   backend_class->printer_create_cairo_surface = file_printer_create_cairo_surface;
 181   backend_class->printer_get_options = file_printer_get_options;
 182   backend_class->printer_get_settings_from_options = file_printer_get_settings_from_options;
 183   backend_class->printer_prepare_for_print = file_printer_prepare_for_print;
 184   backend_class->printer_list_papers = file_printer_list_papers;
 185 }
 186
 187 /* return N_FORMATS if no explicit format in the settings */
 188 static OutputFormat
 189 format_from_settings (GtkPrintSettings *settings)
 190 {
 191   const gchar *value;
 192   gint i;
 193
 194   if (settings == NULL)
 195     return N_FORMATS;
 196
 197   value = gtk_print_settings_get (settings,
 198                                   GTK_PRINT_SETTINGS_OUTPUT_FILE_FORMAT);
 199   if (value == NULL)
 200     return N_FORMATS;
 201
 202   for (i = 0; i < N_FORMATS; ++i)
 203     if (strcmp (value, formats[i]) == 0)
 204       break;
 205
 206   g_assert (i < N_FORMATS);
 207
 208   return (OutputFormat) i;
 209 }
 210
 211 static gchar *
 212 output_file_from_settings (GtkPrintSettings *settings,
 213                            const gchar      *default_format)
 214 {
 215   gchar *uri = NULL;
 216
 217   if (settings)
 218     uri = g_strdup (gtk_print_settings_get (settings, GTK_PRINT_SETTINGS_OUTPUT_URI));
 219
 220   if (uri == NULL)
 221     {
 222       const gchar *extension;
 223       gchar *name, *locale_name, *path;
 224
 225       if (default_format)
 226         extension = default_format;
 227       else
 228         {
 229           OutputFormat format;
 230
 231           format = format_from_settings (settings);
 232           extension = format == FORMAT_PS ? "ps" : "pdf";
 233         }
 234
 235       /* default filename used for print-to-file */
 236       name = g_strdup_printf (_("output.%s"), extension);
 237       locale_name = g_filename_from_utf8 (name, -1, NULL, NULL, NULL);
 238       g_free (name);
 239
 240       if (locale_name != NULL)
 241         {
 242           path = g_build_filename (g_get_current_dir (), locale_name, NULL);
 243           g_free (locale_name);
 244
 245           uri = g_filename_to_uri (path, NULL, NULL);
 246           g_free (path);
 247         }
 248     }
 249
 250   return uri;
 251 }
 252
 253 static cairo_status_t
 254 _cairo_write (void                *closure,
 255               const unsigned char *data,
 256               unsigned int         length)
 257 {
 258   GIOChannel *io = (GIOChannel *)closure;
 259   gsize written;
 260   GError *error;
 261
 262   error = NULL;
 263
 264   GTK_NOTE (PRINTING,
 265             g_print ("FILE Backend: Writting %i byte chunk to temp file\n", length));
 266
 267   while (length > 0)
 268     {
 269       g_io_channel_write_chars (io, (const gchar *) data, length, &written, &error);
 270
 271       if (error != NULL)
 272         {
 273           GTK_NOTE (PRINTING,
 274                      g_print ("FILE Backend: Error writting to temp file, %s\n", error->message));
 275
 276           g_error_free (error);
 277           return CAIRO_STATUS_WRITE_ERROR;
 278         }
 279
 280       GTK_NOTE (PRINTING,
 281                 g_print ("FILE Backend: Wrote %i bytes to temp file\n", written));
 282
 283       data += written;
 284       length -= written;
 285     }
 286
 287   return CAIRO_STATUS_SUCCESS;
 288 }
 289
 290
 291 static cairo_surface_t *
 292 file_printer_create_cairo_surface (GtkPrinter       *printer,
 293                                    GtkPrintSettings *settings,
 294                                    gdouble           width,
 295                                    gdouble           height,
 296                                    GIOChannel       *cache_io)
 297 {
 298   cairo_surface_t *surface;
 299   OutputFormat format;
 300
 301   format = format_from_settings (settings);
 302
 303   if (format == FORMAT_PS)
 304     surface = cairo_ps_surface_create_for_stream (_cairo_write, cache_io, width, height);
 305   else
 306     surface = cairo_pdf_surface_create_for_stream (_cairo_write, cache_io, width, height);
 307
 308   /* TODO: DPI from settings object? */
 309   cairo_surface_set_fallback_resolution (surface, 300, 300);
 310
 311   return surface;
 312 }
 313
 314 typedef struct {
 315   GtkPrintBackend *backend;
 316   GtkPrintJobCompleteFunc callback;
 317   GtkPrintJob *job;
 318   GIOChannel *target_io;
 319   gpointer user_data;
 320   GDestroyNotify dnotify;
 321 } _PrintStreamData;
 322
 323 static void
 324 file_print_cb (GtkPrintBackendFile *print_backend,
 325                GError              *error,
 326                gpointer            user_data)
 327 {
 328   _PrintStreamData *ps = (_PrintStreamData *) user_data;
 329
 330   GDK_THREADS_ENTER ();
 331
 332   if (ps->target_io != NULL)
 333     g_io_channel_unref (ps->target_io);
 334
 335   if (ps->callback)
 336     ps->callback (ps->job, ps->user_data, error);
 337
 338   if (ps->dnotify)
 339     ps->dnotify (ps->user_data);
 340
 341   gtk_print_job_set_status (ps->job,
 342                             (error != NULL)?GTK_PRINT_STATUS_FINISHED_ABORTED:GTK_PRINT_STATUS_FINISHED);
 343
 344   if (ps->job)
 345     g_object_unref (ps->job);
 346
 347   g_free (ps);
 348
 349   GDK_THREADS_LEAVE ();
 350 }
 351
 352 static gboolean
 353 file_write (GIOChannel   *source,
 354             GIOCondition  con,
 355             gpointer      user_data)
 356 {
 357   gchar buf[_STREAM_MAX_CHUNK_SIZE];
 358   gsize bytes_read;
 359   GError *error;
 360   GIOStatus read_status;
 361   _PrintStreamData *ps = (_PrintStreamData *) user_data;
 362
 363   error = NULL;
 364
 365   read_status =
 366     g_io_channel_read_chars (source,
 367                              buf,
 368                              _STREAM_MAX_CHUNK_SIZE,
 369                              &bytes_read,
 370                              &error);
 371
 372   if (read_status != G_IO_STATUS_ERROR)
 373     {
 374       gsize bytes_written;
 375
 376       g_io_channel_write_chars (ps->target_io,
 377                                 buf,
 378                                 bytes_read,
 379                                 &bytes_written,
 380                                 &error);
 381     }
 382
 383   if (error != NULL || read_status == G_IO_STATUS_EOF)
 384     {
 385       file_print_cb (GTK_PRINT_BACKEND_FILE (ps->backend), error, user_data);
 386
 387       if (error != NULL)
 388         {
 389           GTK_NOTE (PRINTING,
 390                     g_print ("FILE Backend: %s\n", error->message));
 391
 392           g_error_free (error);
 393         }
 394
 395       return FALSE;
 396     }
 397
 398   GTK_NOTE (PRINTING,
 399             g_print ("FILE Backend: Writting %i byte chunk to target file\n", bytes_read));
 400
 401   return TRUE;
 402 }
 403
 404 static void
 405 gtk_print_backend_file_print_stream (GtkPrintBackend        *print_backend,
 406                                      GtkPrintJob            *job,
 407                                      GIOChannel             *data_io,
 408                                      GtkPrintJobCompleteFunc callback,
 409                                      gpointer                user_data,
 410                                      GDestroyNotify          dnotify)
 411 {
 412   GError *internal_error = NULL;
 413   GtkPrinter *printer;
 414   _PrintStreamData *ps;
 415   GtkPrintSettings *settings;
 416   gchar *uri, *filename;
 417
 418   printer = gtk_print_job_get_printer (job);
 419   settings = gtk_print_job_get_settings (job);
 420
 421   ps = g_new0 (_PrintStreamData, 1);
 422   ps->callback = callback;
 423   ps->user_data = user_data;
 424   ps->dnotify = dnotify;
 425   ps->job = g_object_ref (job);
 426   ps->backend = print_backend;
 427
 428   internal_error = NULL;
 429   uri = output_file_from_settings (settings, NULL);
 430   filename = g_filename_from_uri (uri, NULL, &internal_error);
 431   g_free (uri);
 432
 433   if (filename == NULL)
 434     goto error;
 435
 436   ps->target_io = g_io_channel_new_file (filename, "w", &internal_error);
 437
 438   g_free (filename);
 439
 440   if (internal_error == NULL)
 441     g_io_channel_set_encoding (ps->target_io, NULL, &internal_error);
 442
 443 error:
 444   if (internal_error != NULL)
 445     {
 446       file_print_cb (GTK_PRINT_BACKEND_FILE (print_backend),
 447                     internal_error, ps);
 448
 449       g_error_free (internal_error);
 450       return;
 451     }
 452
 453   g_io_add_watch (data_io,
 454                   G_IO_IN | G_IO_PRI | G_IO_ERR | G_IO_HUP,
 455                   (GIOFunc) file_write,
 456                   ps);
 457 }
 458
 459 static void
 460 gtk_print_backend_file_init (GtkPrintBackendFile *backend)
 461 {
 462   GtkPrinter *printer;
 463
 464   printer = g_object_new (GTK_TYPE_PRINTER,
 465                           "name", _("Print to File"),
 466                           "backend", backend,
 467                           "is-virtual", TRUE,
 468                           NULL);
 469
 470   gtk_printer_set_has_details (printer, TRUE);
 471   gtk_printer_set_icon_name (printer, "gtk-floppy");
 472   gtk_printer_set_is_active (printer, TRUE);
 473
 474   gtk_print_backend_add_printer (GTK_PRINT_BACKEND (backend), printer);
 475   g_object_unref (printer);
 476
 477   gtk_print_backend_set_list_done (GTK_PRINT_BACKEND (backend));
 478 }
 479
 480 static void
 481 file_printer_output_file_format_changed (GtkPrinterOption    *format_option,
 482                                          GtkPrinterOptionSet *set)
 483 {
 484   GtkPrinterOption *uri_option;
 485   gchar            *base = NULL;
 486
 487   if (! format_option->value)
 488     return;
 489
 490   uri_option = gtk_printer_option_set_lookup (set,
 491                                               "gtk-main-page-custom-input");
 492
 493   if (uri_option && uri_option->value)
 494     {
 495       const gchar *uri = uri_option->value;
 496       const gchar *dot = strrchr (uri, '.');
 497
 498       if (dot)
 499         {
 500           gint i;
 501
 502           /*  check if the file extension matches one of the known ones  */
 503           for (i = 0; i < N_FORMATS; i++)
 504             if (strcmp (dot + 1, formats[i]) == 0)
 505               break;
 506
 507           if (i < N_FORMATS && strcmp (formats[i], format_option->value))
 508             {
 509               /*  the file extension is known but doesn't match the
 510                *  selected one, strip it away
 511                */
 512               base = g_strndup (uri, dot - uri);
 513             }
 514         }
 515       else
 516         {
 517           /*  there's no file extension  */
 518           base = g_strdup (uri);
 519         }
 520     }
 521
 522   if (base)
 523     {
 524       gchar *tmp = g_strdup_printf ("%s.%s", base, format_option->value);
 525
 526       gtk_printer_option_set (uri_option, tmp);
 527       g_free (tmp);
 528       g_free (base);
 529     }
 530 }
 531
 532 static GtkPrinterOptionSet *
 533 file_printer_get_options (GtkPrinter           *printer,
 534                           GtkPrintSettings     *settings,
 535                           GtkPageSetup         *page_setup,
 536                           GtkPrintCapabilities  capabilities)
 537 {
 538   GtkPrinterOptionSet *set;
 539   GtkPrinterOption *option;
 540   const gchar *n_up[] = {"1", "2", "4", "6", "9", "16" };
 541   const gchar *pages_per_sheet = NULL;
 542   const gchar *format_names[N_FORMATS] = { N_("PDF"), N_("Postscript") };
 543   const gchar *supported_formats[N_FORMATS];
 544   gchar *display_format_names[N_FORMATS];
 545   gint n_formats = 0;
 546   OutputFormat format;
 547   gchar *uri;
 548   gint current_format = 0;
 549
 550   format = format_from_settings (settings);
 551
 552   set = gtk_printer_option_set_new ();
 553
 554   option = gtk_printer_option_new ("gtk-n-up", _("Pages per _sheet:"), GTK_PRINTER_OPTION_TYPE_PICKONE);
 555   gtk_printer_option_choices_from_array (option, G_N_ELEMENTS (n_up),
 556                                          (char **) n_up, (char **) n_up /* FIXME i18n (localised digits)! */);
 557   if (settings)
 558     pages_per_sheet = gtk_print_settings_get (settings, GTK_PRINT_SETTINGS_NUMBER_UP);
 559   if (pages_per_sheet)
 560     gtk_printer_option_set (option, pages_per_sheet);
 561   else
 562     gtk_printer_option_set (option, "1");
 563   gtk_printer_option_set_add (set, option);
 564   g_object_unref (option);
 565
 566   if (capabilities & (GTK_PRINT_CAPABILITY_GENERATE_PDF | GTK_PRINT_CAPABILITY_GENERATE_PS))
 567     {
 568       if (capabilities & GTK_PRINT_CAPABILITY_GENERATE_PDF)
 569         {
 570           if (format == FORMAT_PDF || format == N_FORMATS)
 571             {
 572               format = FORMAT_PDF;
 573               current_format = n_formats;
 574             }
 575           supported_formats[n_formats] = formats[FORMAT_PDF];
 576           display_format_names[n_formats] = _(format_names[FORMAT_PDF]);
 577           n_formats++;
 578         }
 579       if (capabilities & GTK_PRINT_CAPABILITY_GENERATE_PS)
 580         {
 581           if (format == FORMAT_PS || format == N_FORMATS)
 582             current_format = n_formats;
 583           supported_formats[n_formats] = formats[FORMAT_PS];
 584           display_format_names[n_formats] = _(format_names[FORMAT_PS]);
 585           n_formats++;
 586         }
 587     }
 588   else
 589     {
 590       current_format = format == FORMAT_PS ? FORMAT_PS : FORMAT_PDF;
 591       for (n_formats = 0; n_formats < N_FORMATS; ++n_formats)
 592         {
 593           supported_formats[n_formats] = formats[n_formats];
 594           display_format_names[n_formats] = _(format_names[n_formats]);
 595         }
 596     }
 597
 598   uri = output_file_from_settings (settings, supported_formats[current_format]);
 599
 600   option = gtk_printer_option_new ("gtk-main-page-custom-input", _("File"),
 601                                    GTK_PRINTER_OPTION_TYPE_FILESAVE);
 602   gtk_printer_option_set (option, uri);
 603   g_free (uri);
 604   option->group = g_strdup ("GtkPrintDialogExtension");
 605   gtk_printer_option_set_add (set, option);
 606
 607   if (n_formats > 1)
 608     {
 609       option = gtk_printer_option_new ("output-file-format", _("_Output format"),
 610                                        GTK_PRINTER_OPTION_TYPE_ALTERNATIVE);
 611       option->group = g_strdup ("GtkPrintDialogExtension");
 612
 613       gtk_printer_option_choices_from_array (option, n_formats,
 614                                              (char **) supported_formats,
 615                                              display_format_names);
 616       gtk_printer_option_set (option, supported_formats[current_format]);
 617       gtk_printer_option_set_add (set, option);
 618
 619       g_signal_connect (option, "changed",
 620                         G_CALLBACK (file_printer_output_file_format_changed),
 621                         set);
 622
 623       g_object_unref (option);
 624     }
 625
 626   return set;
 627 }
 628
 629 static void
 630 file_printer_get_settings_from_options (GtkPrinter          *printer,
 631                                         GtkPrinterOptionSet *options,
 632                                         GtkPrintSettings    *settings)
 633 {
 634   GtkPrinterOption *option;
 635
 636   option = gtk_printer_option_set_lookup (options, "gtk-main-page-custom-input");
 637   gtk_print_settings_set (settings, GTK_PRINT_SETTINGS_OUTPUT_URI, option->value);
 638
 639   option = gtk_printer_option_set_lookup (options, "output-file-format");
 640   if (option)
 641     gtk_print_settings_set (settings, GTK_PRINT_SETTINGS_OUTPUT_FILE_FORMAT, option->value);
 642
 643   option = gtk_printer_option_set_lookup (options, "gtk-n-up");
 644   if (option)
 645     gtk_print_settings_set (settings, GTK_PRINT_SETTINGS_NUMBER_UP, option->value);
 646 }
 647
 648 static void
 649 file_printer_prepare_for_print (GtkPrinter       *printer,
 650                                 GtkPrintJob      *print_job,
 651                                 GtkPrintSettings *settings,
 652                                 GtkPageSetup     *page_setup)
 653 {
 654   gdouble scale;
 655
 656   print_job->print_pages = gtk_print_settings_get_print_pages (settings);
 657   print_job->page_ranges = NULL;
 658   print_job->num_page_ranges = 0;
 659
 660   if (print_job->print_pages == GTK_PRINT_PAGES_RANGES)
 661     print_job->page_ranges =
 662       gtk_print_settings_get_page_ranges (settings,
 663                                           &print_job->num_page_ranges);
 664
 665   print_job->collate = gtk_print_settings_get_collate (settings);
 666   print_job->reverse = gtk_print_settings_get_reverse (settings);
 667   print_job->num_copies = gtk_print_settings_get_n_copies (settings);
 668
 669   scale = gtk_print_settings_get_scale (settings);
 670   if (scale != 100.0)
 671     print_job->scale = scale/100.0;
 672
 673   print_job->page_set = gtk_print_settings_get_page_set (settings);
 674   print_job->rotate_to_orientation = TRUE;
 675 }
 676
 677 static GList *
 678 file_printer_list_papers (GtkPrinter *printer)
 679 {
 680   GList *result = NULL;
 681   GList *papers, *p;
 682   GtkPageSetup *page_setup;
 683
 684   papers = gtk_paper_size_get_paper_sizes (TRUE);
 685
 686   for (p = papers; p; p = p->next)
 687     {
 688       GtkPaperSize *paper_size = p->data;
 689
 690       page_setup = gtk_page_setup_new ();
 691       gtk_page_setup_set_paper_size (page_setup, paper_size);
 692       gtk_paper_size_free (paper_size);
 693       result = g_list_prepend (result, page_setup);
 694     }
 695
 696   g_list_free (papers);
 697
 698   return g_list_reverse (result);
 699 }