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 #include <cairo-svg.h>
  36
  37 #include <glib/gi18n-lib.h>
  38
  39 #include "gtk/gtk.h"
  40 #include "gtk/gtkprinter-private.h"
  41
  42 #include "gtkprintbackendfile.h"
  43
  44 typedef struct _GtkPrintBackendFileClass GtkPrintBackendFileClass;
  45
  46 #define GTK_PRINT_BACKEND_FILE_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST ((klass), GTK_TYPE_PRINT_BACKEND_FILE, GtkPrintBackendFileClass))
  47 #define GTK_IS_PRINT_BACKEND_FILE_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GTK_TYPE_PRINT_BACKEND_FILE))
  48 #define GTK_PRINT_BACKEND_FILE_GET_CLASS(obj)  (G_TYPE_INSTANCE_GET_CLASS ((obj), GTK_TYPE_PRINT_BACKEND_FILE, GtkPrintBackendFileClass))
  49
  50 #define _STREAM_MAX_CHUNK_SIZE 8192
  51
  52 static GType print_backend_file_type = 0;
  53
  54 struct _GtkPrintBackendFileClass
  55 {
  56   GtkPrintBackendClass parent_class;
  57 };
  58
  59 struct _GtkPrintBackendFile
  60 {
  61   GtkPrintBackend parent_instance;
  62 };
  63
  64 typedef enum
  65 {
  66   FORMAT_PDF,
  67   FORMAT_PS,
  68   FORMAT_SVG,
  69   N_FORMATS
  70 } OutputFormat;
  71
  72 static const gchar* formats[N_FORMATS] =
  73 {
  74   "pdf",
  75   "ps",
  76   "svg"
  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 static GtkPageSetup *       file_printer_get_default_page_size     (GtkPrinter              *printer);
 108
 109 static void
 110 gtk_print_backend_file_register_type (GTypeModule *module)
 111 {
 112   const GTypeInfo print_backend_file_info =
 113   {
 114     sizeof (GtkPrintBackendFileClass),
 115     NULL,               /* base_init */
 116     NULL,               /* base_finalize */
 117     (GClassInitFunc) gtk_print_backend_file_class_init,
 118     NULL,               /* class_finalize */
 119     NULL,               /* class_data */
 120     sizeof (GtkPrintBackendFile),
 121     0,          /* n_preallocs */
 122     (GInstanceInitFunc) gtk_print_backend_file_init,
 123   };
 124
 125   print_backend_file_type = g_type_module_register_type (module,
 126                                                          GTK_TYPE_PRINT_BACKEND,
 127                                                          "GtkPrintBackendFile",
 128                                                          &print_backend_file_info, 0);
 129 }
 130
 131 G_MODULE_EXPORT void
 132 pb_module_init (GTypeModule *module)
 133 {
 134   gtk_print_backend_file_register_type (module);
 135 }
 136
 137 G_MODULE_EXPORT void
 138 pb_module_exit (void)
 139 {
 140
 141 }
 142
 143 G_MODULE_EXPORT GtkPrintBackend *
 144 pb_module_create (void)
 145 {
 146   return gtk_print_backend_file_new ();
 147 }
 148
 149 /*
 150  * GtkPrintBackendFile
 151  */
 152 GType
 153 gtk_print_backend_file_get_type (void)
 154 {
 155   return print_backend_file_type;
 156 }
 157
 158 /**
 159  * gtk_print_backend_file_new:
 160  *
 161  * Creates a new #GtkPrintBackendFile object. #GtkPrintBackendFile
 162  * implements the #GtkPrintBackend interface with direct access to
 163  * the filesystem using Unix/Linux API calls
 164  *
 165  * Return value: the new #GtkPrintBackendFile object
 166  **/
 167 GtkPrintBackend *
 168 gtk_print_backend_file_new (void)
 169 {
 170   return g_object_new (GTK_TYPE_PRINT_BACKEND_FILE, NULL);
 171 }
 172
 173 static void
 174 gtk_print_backend_file_class_init (GtkPrintBackendFileClass *class)
 175 {
 176   GtkPrintBackendClass *backend_class = GTK_PRINT_BACKEND_CLASS (class);
 177
 178   backend_parent_class = g_type_class_peek_parent (class);
 179
 180   backend_class->print_stream = gtk_print_backend_file_print_stream;
 181   backend_class->printer_create_cairo_surface = file_printer_create_cairo_surface;
 182   backend_class->printer_get_options = file_printer_get_options;
 183   backend_class->printer_get_settings_from_options = file_printer_get_settings_from_options;
 184   backend_class->printer_prepare_for_print = file_printer_prepare_for_print;
 185   backend_class->printer_list_papers = file_printer_list_papers;
 186   backend_class->printer_get_default_page_size = file_printer_get_default_page_size;
 187 }
 188
 189 /* return N_FORMATS if no explicit format in the settings */
 190 static OutputFormat
 191 format_from_settings (GtkPrintSettings *settings)
 192 {
 193   const gchar *value;
 194   gint i;
 195
 196   if (settings == NULL)
 197     return N_FORMATS;
 198
 199   value = gtk_print_settings_get (settings,
 200                                   GTK_PRINT_SETTINGS_OUTPUT_FILE_FORMAT);
 201   if (value == NULL)
 202     return N_FORMATS;
 203
 204   for (i = 0; i < N_FORMATS; ++i)
 205     if (strcmp (value, formats[i]) == 0)
 206       break;
 207
 208   g_assert (i < N_FORMATS);
 209
 210   return (OutputFormat) i;
 211 }
 212
 213 static gchar *
 214 output_file_from_settings (GtkPrintSettings *settings,
 215                            const gchar      *default_format)
 216 {
 217   gchar *uri = NULL;
 218
 219   if (settings)
 220     uri = g_strdup (gtk_print_settings_get (settings, GTK_PRINT_SETTINGS_OUTPUT_URI));
 221
 222   if (uri == NULL)
 223     {
 224       const gchar *extension;
 225       gchar *name, *locale_name, *path;
 226
 227       if (default_format)
 228         extension = default_format;
 229       else
 230         {
 231           OutputFormat format;
 232
 233           format = format_from_settings (settings);
 234           switch (format)
 235             {
 236               default:
 237               case FORMAT_PDF:
 238                 extension = "pdf";
 239                 break;
 240               case FORMAT_PS:
 241                 extension = "ps";
 242                 break;
 243               case FORMAT_SVG:
 244                 extension = "svg";
 245                 break;
 246             }
 247         }
 248
 249       /* default filename used for print-to-file */
 250       name = g_strdup_printf (_("output.%s"), extension);
 251       locale_name = g_filename_from_utf8 (name, -1, NULL, NULL, NULL);
 252       g_free (name);
 253
 254       if (locale_name != NULL)
 255         {
 256           const gchar *document_dir = g_get_user_special_dir (G_USER_DIRECTORY_DOCUMENTS);
 257
 258           if (document_dir == NULL)
 259             {
 260               gchar *current_dir = g_get_current_dir ();
 261               path = g_build_filename (current_dir, locale_name, NULL);
 262               g_free (current_dir);
 263             }
 264           else
 265             path = g_build_filename (document_dir, locale_name, NULL);
 266
 267           uri = g_filename_to_uri (path, NULL, NULL);
 268
 269           g_free (locale_name);
 270           g_free (path);
 271         }
 272     }
 273
 274   return uri;
 275 }
 276
 277 static cairo_status_t
 278 _cairo_write (void                *closure,
 279               const unsigned char *data,
 280               unsigned int         length)
 281 {
 282   GIOChannel *io = (GIOChannel *)closure;
 283   gsize written;
 284   GError *error;
 285
 286   error = NULL;
 287
 288   GTK_NOTE (PRINTING,
 289             g_print ("FILE Backend: Writting %i byte chunk to temp file\n", length));
 290
 291   while (length > 0)
 292     {
 293       g_io_channel_write_chars (io, (const gchar *) data, length, &written, &error);
 294
 295       if (error != NULL)
 296         {
 297           GTK_NOTE (PRINTING,
 298                      g_print ("FILE Backend: Error writting to temp file, %s\n", error->message));
 299
 300           g_error_free (error);
 301           return CAIRO_STATUS_WRITE_ERROR;
 302         }
 303
 304       GTK_NOTE (PRINTING,
 305                 g_print ("FILE Backend: Wrote %i bytes to temp file\n", written));
 306
 307       data += written;
 308       length -= written;
 309     }
 310
 311   return CAIRO_STATUS_SUCCESS;
 312 }
 313
 314
 315 static cairo_surface_t *
 316 file_printer_create_cairo_surface (GtkPrinter       *printer,
 317                                    GtkPrintSettings *settings,
 318                                    gdouble           width,
 319                                    gdouble           height,
 320                                    GIOChannel       *cache_io)
 321 {
 322   cairo_surface_t *surface;
 323   OutputFormat format;
 324   const cairo_svg_version_t *versions;
 325   int num_versions = 0;
 326
 327   format = format_from_settings (settings);
 328
 329   switch (format)
 330     {
 331       default:
 332       case FORMAT_PDF:
 333         surface = cairo_pdf_surface_create_for_stream (_cairo_write, cache_io, width, height);
 334         break;
 335       case FORMAT_PS:
 336         surface = cairo_ps_surface_create_for_stream (_cairo_write, cache_io, width, height);
 337         break;
 338       case FORMAT_SVG:
 339         surface = cairo_svg_surface_create_for_stream (_cairo_write, cache_io, width, height);
 340         cairo_svg_get_versions (&versions, &num_versions);
 341         if (num_versions > 0)
 342           cairo_svg_surface_restrict_to_version (surface, versions[num_versions - 1]);
 343         break;
 344     }
 345
 346   cairo_surface_set_fallback_resolution (surface,
 347                                          2.0 * gtk_print_settings_get_printer_lpi (settings),
 348                                          2.0 * gtk_print_settings_get_printer_lpi (settings));
 349
 350   return surface;
 351 }
 352
 353 typedef struct {
 354   GtkPrintBackend *backend;
 355   GtkPrintJobCompleteFunc callback;
 356   GtkPrintJob *job;
 357   GFileOutputStream *target_io_stream;
 358   gpointer user_data;
 359   GDestroyNotify dnotify;
 360 } _PrintStreamData;
 361
 362 static void
 363 file_print_cb (GtkPrintBackendFile *print_backend,
 364                GError              *error,
 365                gpointer            user_data)
 366 {
 367   _PrintStreamData *ps = (_PrintStreamData *) user_data;
 368
 369   GDK_THREADS_ENTER ();
 370
 371   if (ps->target_io_stream != NULL)
 372     g_output_stream_close (G_OUTPUT_STREAM (ps->target_io_stream), NULL, NULL);
 373
 374   if (ps->callback)
 375     ps->callback (ps->job, ps->user_data, error);
 376
 377   if (ps->dnotify)
 378     ps->dnotify (ps->user_data);
 379
 380   gtk_print_job_set_status (ps->job,
 381                             (error != NULL)?GTK_PRINT_STATUS_FINISHED_ABORTED:GTK_PRINT_STATUS_FINISHED);
 382
 383   if (ps->job)
 384     g_object_unref (ps->job);
 385
 386   g_free (ps);
 387
 388   GDK_THREADS_LEAVE ();
 389 }
 390
 391 static gboolean
 392 file_write (GIOChannel   *source,
 393             GIOCondition  con,
 394             gpointer      user_data)
 395 {
 396   gchar buf[_STREAM_MAX_CHUNK_SIZE];
 397   gsize bytes_read;
 398   GError *error;
 399   GIOStatus read_status;
 400   _PrintStreamData *ps = (_PrintStreamData *) user_data;
 401
 402   error = NULL;
 403
 404   read_status =
 405     g_io_channel_read_chars (source,
 406                              buf,
 407                              _STREAM_MAX_CHUNK_SIZE,
 408                              &bytes_read,
 409                              &error);
 410
 411   if (read_status != G_IO_STATUS_ERROR)
 412     {
 413       gsize bytes_written;
 414
 415       g_output_stream_write_all (G_OUTPUT_STREAM (ps->target_io_stream),
 416                                  buf,
 417                                  bytes_read,
 418                                  &bytes_written,
 419                                  NULL,
 420                                  &error);
 421     }
 422
 423   if (error != NULL || read_status == G_IO_STATUS_EOF)
 424     {
 425       file_print_cb (GTK_PRINT_BACKEND_FILE (ps->backend), error, user_data);
 426
 427       if (error != NULL)
 428         {
 429           GTK_NOTE (PRINTING,
 430                     g_print ("FILE Backend: %s\n", error->message));
 431
 432           g_error_free (error);
 433         }
 434
 435       return FALSE;
 436     }
 437
 438   GTK_NOTE (PRINTING,
 439             g_print ("FILE Backend: Writting %i byte chunk to target file\n", bytes_read));
 440
 441   return TRUE;
 442 }
 443
 444 static void
 445 gtk_print_backend_file_print_stream (GtkPrintBackend        *print_backend,
 446                                      GtkPrintJob            *job,
 447                                      GIOChannel             *data_io,
 448                                      GtkPrintJobCompleteFunc callback,
 449                                      gpointer                user_data,
 450                                      GDestroyNotify          dnotify)
 451 {
 452   GError *internal_error = NULL;
 453   _PrintStreamData *ps;
 454   GtkPrintSettings *settings;
 455   gchar *uri;
 456   GFile *file = NULL;
 457
 458   settings = gtk_print_job_get_settings (job);
 459
 460   ps = g_new0 (_PrintStreamData, 1);
 461   ps->callback = callback;
 462   ps->user_data = user_data;
 463   ps->dnotify = dnotify;
 464   ps->job = g_object_ref (job);
 465   ps->backend = print_backend;
 466
 467   internal_error = NULL;
 468   uri = output_file_from_settings (settings, NULL);
 469
 470   if (uri == NULL)
 471     goto error;
 472
 473   file = g_file_new_for_uri (uri);
 474   ps->target_io_stream = g_file_replace (file, NULL, FALSE, G_FILE_CREATE_NONE, NULL, &internal_error);
 475
 476   g_object_unref (file);
 477   g_free (uri);
 478
 479 error:
 480   if (internal_error != NULL)
 481     {
 482       file_print_cb (GTK_PRINT_BACKEND_FILE (print_backend),
 483                     internal_error, ps);
 484
 485       g_error_free (internal_error);
 486       return;
 487     }
 488
 489   g_io_add_watch (data_io,
 490                   G_IO_IN | G_IO_PRI | G_IO_ERR | G_IO_HUP,
 491                   (GIOFunc) file_write,
 492                   ps);
 493 }
 494
 495 static void
 496 gtk_print_backend_file_init (GtkPrintBackendFile *backend)
 497 {
 498   GtkPrinter *printer;
 499
 500   printer = g_object_new (GTK_TYPE_PRINTER,
 501                           "name", _("Print to File"),
 502                           "backend", backend,
 503                           "is-virtual", TRUE,
 504                           NULL);
 505
 506   gtk_printer_set_has_details (printer, TRUE);
 507   gtk_printer_set_icon_name (printer, "document-save");
 508   gtk_printer_set_is_active (printer, TRUE);
 509
 510   gtk_print_backend_add_printer (GTK_PRINT_BACKEND (backend), printer);
 511   g_object_unref (printer);
 512
 513   gtk_print_backend_set_list_done (GTK_PRINT_BACKEND (backend));
 514 }
 515
 516 static void
 517 file_printer_output_file_format_changed (GtkPrinterOption    *format_option,
 518                                          GtkPrinterOptionSet *set)
 519 {
 520   GtkPrinterOption *uri_option;
 521   gchar            *base = NULL;
 522
 523   if (! format_option->value)
 524     return;
 525
 526   uri_option = gtk_printer_option_set_lookup (set,
 527                                               "gtk-main-page-custom-input");
 528
 529   if (uri_option && uri_option->value)
 530     {
 531       const gchar *uri = uri_option->value;
 532       const gchar *dot = strrchr (uri, '.');
 533
 534       if (dot)
 535         {
 536           gint i;
 537
 538           /*  check if the file extension matches one of the known ones  */
 539           for (i = 0; i < N_FORMATS; i++)
 540             if (strcmp (dot + 1, formats[i]) == 0)
 541               break;
 542
 543           if (i < N_FORMATS && strcmp (formats[i], format_option->value))
 544             {
 545               /*  the file extension is known but doesn't match the
 546                *  selected one, strip it away
 547                */
 548               base = g_strndup (uri, dot - uri);
 549             }
 550         }
 551       else
 552         {
 553           /*  there's no file extension  */
 554           base = g_strdup (uri);
 555         }
 556     }
 557
 558   if (base)
 559     {
 560       gchar *tmp = g_strdup_printf ("%s.%s", base, format_option->value);
 561
 562       gtk_printer_option_set (uri_option, tmp);
 563       g_free (tmp);
 564       g_free (base);
 565     }
 566 }
 567
 568 static GtkPrinterOptionSet *
 569 file_printer_get_options (GtkPrinter           *printer,
 570                           GtkPrintSettings     *settings,
 571                           GtkPageSetup         *page_setup,
 572                           GtkPrintCapabilities  capabilities)
 573 {
 574   GtkPrinterOptionSet *set;
 575   GtkPrinterOption *option;
 576   const gchar *n_up[] = {"1", "2", "4", "6", "9", "16" };
 577   const gchar *pages_per_sheet = NULL;
 578   const gchar *format_names[N_FORMATS] = { N_("PDF"), N_("Postscript"), N_("SVG") };
 579   const gchar *supported_formats[N_FORMATS];
 580   gchar *display_format_names[N_FORMATS];
 581   gint n_formats = 0;
 582   OutputFormat format;
 583   gchar *uri;
 584   gint current_format = 0;
 585
 586   format = format_from_settings (settings);
 587
 588   set = gtk_printer_option_set_new ();
 589
 590   option = gtk_printer_option_new ("gtk-n-up", _("Pages per _sheet:"), GTK_PRINTER_OPTION_TYPE_PICKONE);
 591   gtk_printer_option_choices_from_array (option, G_N_ELEMENTS (n_up),
 592                                          (char **) n_up, (char **) n_up /* FIXME i18n (localised digits)! */);
 593   if (settings)
 594     pages_per_sheet = gtk_print_settings_get (settings, GTK_PRINT_SETTINGS_NUMBER_UP);
 595   if (pages_per_sheet)
 596     gtk_printer_option_set (option, pages_per_sheet);
 597   else
 598     gtk_printer_option_set (option, "1");
 599   gtk_printer_option_set_add (set, option);
 600   g_object_unref (option);
 601
 602   if (capabilities & (GTK_PRINT_CAPABILITY_GENERATE_PDF | GTK_PRINT_CAPABILITY_GENERATE_PS))
 603     {
 604       if (capabilities & GTK_PRINT_CAPABILITY_GENERATE_PDF)
 605         {
 606           if (format == FORMAT_PDF || format == N_FORMATS)
 607             {
 608               format = FORMAT_PDF;
 609               current_format = n_formats;
 610             }
 611           supported_formats[n_formats] = formats[FORMAT_PDF];
 612           display_format_names[n_formats] = _(format_names[FORMAT_PDF]);
 613           n_formats++;
 614         }
 615       if (capabilities & GTK_PRINT_CAPABILITY_GENERATE_PS)
 616         {
 617           if (format == FORMAT_PS || format == N_FORMATS)
 618             current_format = n_formats;
 619           supported_formats[n_formats] = formats[FORMAT_PS];
 620           display_format_names[n_formats] = _(format_names[FORMAT_PS]);
 621           n_formats++;
 622         }
 623     }
 624   else
 625     {
 626       switch (format)
 627         {
 628           default:
 629           case FORMAT_PDF:
 630             current_format = FORMAT_PDF;
 631             break;
 632           case FORMAT_PS:
 633             current_format = FORMAT_PS;
 634             break;
 635           case FORMAT_SVG:
 636             current_format = FORMAT_SVG;
 637             break;
 638         }
 639
 640       for (n_formats = 0; n_formats < N_FORMATS; ++n_formats)
 641         {
 642           supported_formats[n_formats] = formats[n_formats];
 643           display_format_names[n_formats] = _(format_names[n_formats]);
 644         }
 645     }
 646
 647   uri = output_file_from_settings (settings, supported_formats[current_format]);
 648
 649   option = gtk_printer_option_new ("gtk-main-page-custom-input", _("File"),
 650                                    GTK_PRINTER_OPTION_TYPE_FILESAVE);
 651   gtk_printer_option_set_activates_default (option, TRUE);
 652   gtk_printer_option_set (option, uri);
 653   g_free (uri);
 654   option->group = g_strdup ("GtkPrintDialogExtension");
 655   gtk_printer_option_set_add (set, option);
 656
 657   if (n_formats > 1)
 658     {
 659       option = gtk_printer_option_new ("output-file-format", _("_Output format"),
 660                                        GTK_PRINTER_OPTION_TYPE_ALTERNATIVE);
 661       option->group = g_strdup ("GtkPrintDialogExtension");
 662
 663       gtk_printer_option_choices_from_array (option, n_formats,
 664                                              (char **) supported_formats,
 665                                              display_format_names);
 666       gtk_printer_option_set (option, supported_formats[current_format]);
 667       gtk_printer_option_set_add (set, option);
 668
 669       g_signal_connect (option, "changed",
 670                         G_CALLBACK (file_printer_output_file_format_changed),
 671                         set);
 672
 673       g_object_unref (option);
 674     }
 675
 676   return set;
 677 }
 678
 679 static void
 680 file_printer_get_settings_from_options (GtkPrinter          *printer,
 681                                         GtkPrinterOptionSet *options,
 682                                         GtkPrintSettings    *settings)
 683 {
 684   GtkPrinterOption *option;
 685
 686   option = gtk_printer_option_set_lookup (options, "gtk-main-page-custom-input");
 687   gtk_print_settings_set (settings, GTK_PRINT_SETTINGS_OUTPUT_URI, option->value);
 688
 689   option = gtk_printer_option_set_lookup (options, "output-file-format");
 690   if (option)
 691     gtk_print_settings_set (settings, GTK_PRINT_SETTINGS_OUTPUT_FILE_FORMAT, option->value);
 692
 693   option = gtk_printer_option_set_lookup (options, "gtk-n-up");
 694   if (option)
 695     gtk_print_settings_set (settings, GTK_PRINT_SETTINGS_NUMBER_UP, option->value);
 696
 697   option = gtk_printer_option_set_lookup (options, "gtk-n-up-layout");
 698   if (option)
 699     gtk_print_settings_set (settings, GTK_PRINT_SETTINGS_NUMBER_UP_LAYOUT, option->value);
 700 }
 701
 702 static void
 703 file_printer_prepare_for_print (GtkPrinter       *printer,
 704                                 GtkPrintJob      *print_job,
 705                                 GtkPrintSettings *settings,
 706                                 GtkPageSetup     *page_setup)
 707 {
 708   gdouble scale;
 709
 710   print_job->print_pages = gtk_print_settings_get_print_pages (settings);
 711   print_job->page_ranges = NULL;
 712   print_job->num_page_ranges = 0;
 713
 714   if (print_job->print_pages == GTK_PRINT_PAGES_RANGES)
 715     print_job->page_ranges =
 716       gtk_print_settings_get_page_ranges (settings,
 717                                           &print_job->num_page_ranges);
 718
 719   print_job->collate = gtk_print_settings_get_collate (settings);
 720   print_job->reverse = gtk_print_settings_get_reverse (settings);
 721   print_job->num_copies = gtk_print_settings_get_n_copies (settings);
 722   print_job->number_up = gtk_print_settings_get_number_up (settings);
 723   print_job->number_up_layout = gtk_print_settings_get_number_up_layout (settings);
 724
 725   scale = gtk_print_settings_get_scale (settings);
 726   if (scale != 100.0)
 727     print_job->scale = scale/100.0;
 728
 729   print_job->page_set = gtk_print_settings_get_page_set (settings);
 730   print_job->rotate_to_orientation = TRUE;
 731 }
 732
 733 static GList *
 734 file_printer_list_papers (GtkPrinter *printer)
 735 {
 736   GList *result = NULL;
 737   GList *papers, *p;
 738   GtkPageSetup *page_setup;
 739
 740   papers = gtk_paper_size_get_paper_sizes (TRUE);
 741
 742   for (p = papers; p; p = p->next)
 743     {
 744       GtkPaperSize *paper_size = p->data;
 745
 746       page_setup = gtk_page_setup_new ();
 747       gtk_page_setup_set_paper_size (page_setup, paper_size);
 748       gtk_paper_size_free (paper_size);
 749       result = g_list_prepend (result, page_setup);
 750     }
 751
 752   g_list_free (papers);
 753
 754   return g_list_reverse (result);
 755 }
 756
 757 static GtkPageSetup *
 758 file_printer_get_default_page_size (GtkPrinter *printer)
 759 {
 760   GtkPageSetup *result = NULL;
 761
 762   return result;
 763 }