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, see <http://www.gnu.org/licenses/>.
  18  */
  19
  20 #include "config.h"
  21
  22 #include <unistd.h>
  23 #include <sys/types.h>
  24 #include <sys/stat.h>
  25 #include <fcntl.h>
  26 #include <stdlib.h>
  27 #include <string.h>
  28
  29 #include <errno.h>
  30 #include <cairo.h>
  31 #include <cairo-pdf.h>
  32 #include <cairo-ps.h>
  33 #include <cairo-svg.h>
  34
  35 #include <glib/gi18n-lib.h>
  36
  37 #include "gtk/gtk.h"
  38 #include "gtk/gtkprinter-private.h"
  39
  40 #include "gtkprintbackendfile.h"
  41
  42 typedef struct _GtkPrintBackendFileClass GtkPrintBackendFileClass;
  43
  44 #define GTK_PRINT_BACKEND_FILE_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST ((klass), GTK_TYPE_PRINT_BACKEND_FILE, GtkPrintBackendFileClass))
  45 #define GTK_IS_PRINT_BACKEND_FILE_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GTK_TYPE_PRINT_BACKEND_FILE))
  46 #define GTK_PRINT_BACKEND_FILE_GET_CLASS(obj)  (G_TYPE_INSTANCE_GET_CLASS ((obj), GTK_TYPE_PRINT_BACKEND_FILE, GtkPrintBackendFileClass))
  47
  48 #define _STREAM_MAX_CHUNK_SIZE 8192
  49
  50 static GType print_backend_file_type = 0;
  51
  52 struct _GtkPrintBackendFileClass
  53 {
  54   GtkPrintBackendClass parent_class;
  55 };
  56
  57 struct _GtkPrintBackendFile
  58 {
  59   GtkPrintBackend parent_instance;
  60 };
  61
  62 typedef enum
  63 {
  64   FORMAT_PDF,
  65   FORMAT_PS,
  66   FORMAT_SVG,
  67   N_FORMATS
  68 } OutputFormat;
  69
  70 static const gchar* formats[N_FORMATS] =
  71 {
  72   "pdf",
  73   "ps",
  74   "svg"
  75 };
  76
  77 static GObjectClass *backend_parent_class;
  78
  79 static void                 gtk_print_backend_file_class_init      (GtkPrintBackendFileClass *class);
  80 static void                 gtk_print_backend_file_init            (GtkPrintBackendFile      *impl);
  81 static void                 file_printer_get_settings_from_options (GtkPrinter              *printer,
  82                                                                     GtkPrinterOptionSet     *options,
  83                                                                     GtkPrintSettings        *settings);
  84 static GtkPrinterOptionSet *file_printer_get_options               (GtkPrinter              *printer,
  85                                                                     GtkPrintSettings        *settings,
  86                                                                     GtkPageSetup            *page_setup,
  87                                                                     GtkPrintCapabilities     capabilities);
  88 static void                 file_printer_prepare_for_print         (GtkPrinter              *printer,
  89                                                                     GtkPrintJob             *print_job,
  90                                                                     GtkPrintSettings        *settings,
  91                                                                     GtkPageSetup            *page_setup);
  92 static void                 gtk_print_backend_file_print_stream    (GtkPrintBackend         *print_backend,
  93                                                                     GtkPrintJob             *job,
  94                                                                     GIOChannel              *data_io,
  95                                                                     GtkPrintJobCompleteFunc  callback,
  96                                                                     gpointer                 user_data,
  97                                                                     GDestroyNotify           dnotify);
  98 static cairo_surface_t *    file_printer_create_cairo_surface      (GtkPrinter              *printer,
  99                                                                     GtkPrintSettings        *settings,
 100                                                                     gdouble                  width,
 101                                                                     gdouble                  height,
 102                                                                     GIOChannel              *cache_io);
 103
 104 static GList *              file_printer_list_papers               (GtkPrinter              *printer);
 105 static GtkPageSetup *       file_printer_get_default_page_size     (GtkPrinter              *printer);
 106
 107 static void
 108 gtk_print_backend_file_register_type (GTypeModule *module)
 109 {
 110   const GTypeInfo print_backend_file_info =
 111   {
 112     sizeof (GtkPrintBackendFileClass),
 113     NULL,               /* base_init */
 114     NULL,               /* base_finalize */
 115     (GClassInitFunc) gtk_print_backend_file_class_init,
 116     NULL,               /* class_finalize */
 117     NULL,               /* class_data */
 118     sizeof (GtkPrintBackendFile),
 119     0,          /* n_preallocs */
 120     (GInstanceInitFunc) gtk_print_backend_file_init,
 121   };
 122
 123   print_backend_file_type = g_type_module_register_type (module,
 124                                                          GTK_TYPE_PRINT_BACKEND,
 125                                                          "GtkPrintBackendFile",
 126                                                          &print_backend_file_info, 0);
 127 }
 128
 129 G_MODULE_EXPORT void
 130 pb_module_init (GTypeModule *module)
 131 {
 132   gtk_print_backend_file_register_type (module);
 133 }
 134
 135 G_MODULE_EXPORT void
 136 pb_module_exit (void)
 137 {
 138
 139 }
 140
 141 G_MODULE_EXPORT GtkPrintBackend *
 142 pb_module_create (void)
 143 {
 144   return gtk_print_backend_file_new ();
 145 }
 146
 147 /*
 148  * GtkPrintBackendFile
 149  */
 150 GType
 151 gtk_print_backend_file_get_type (void)
 152 {
 153   return print_backend_file_type;
 154 }
 155
 156 /**
 157  * gtk_print_backend_file_new:
 158  *
 159  * Creates a new #GtkPrintBackendFile object. #GtkPrintBackendFile
 160  * implements the #GtkPrintBackend interface with direct access to
 161  * the filesystem using Unix/Linux API calls
 162  *
 163  * Return value: the new #GtkPrintBackendFile object
 164  **/
 165 GtkPrintBackend *
 166 gtk_print_backend_file_new (void)
 167 {
 168   return g_object_new (GTK_TYPE_PRINT_BACKEND_FILE, NULL);
 169 }
 170
 171 static void
 172 gtk_print_backend_file_class_init (GtkPrintBackendFileClass *class)
 173 {
 174   GtkPrintBackendClass *backend_class = GTK_PRINT_BACKEND_CLASS (class);
 175
 176   backend_parent_class = g_type_class_peek_parent (class);
 177
 178   backend_class->print_stream = gtk_print_backend_file_print_stream;
 179   backend_class->printer_create_cairo_surface = file_printer_create_cairo_surface;
 180   backend_class->printer_get_options = file_printer_get_options;
 181   backend_class->printer_get_settings_from_options = file_printer_get_settings_from_options;
 182   backend_class->printer_prepare_for_print = file_printer_prepare_for_print;
 183   backend_class->printer_list_papers = file_printer_list_papers;
 184   backend_class->printer_get_default_page_size = file_printer_get_default_page_size;
 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, *basename, *output_dir;
 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           switch (format)
 233             {
 234               default:
 235               case FORMAT_PDF:
 236                 extension = "pdf";
 237                 break;
 238               case FORMAT_PS:
 239                 extension = "ps";
 240                 break;
 241               case FORMAT_SVG:
 242                 extension = "svg";
 243                 break;
 244             }
 245         }
 246
 247       basename = gtk_print_settings_get (settings, GTK_PRINT_SETTINGS_OUTPUT_BASENAME);
 248       if (basename == NULL)
 249         basename = _("output");
 250
 251       name = g_strconcat (basename, ".", extension, NULL);
 252
 253       locale_name = g_filename_from_utf8 (name, -1, NULL, NULL, NULL);
 254       g_free (name);
 255
 256       if (locale_name != NULL)
 257         {
 258           output_dir = gtk_print_settings_get (settings, GTK_PRINT_SETTINGS_OUTPUT_DIR);
 259           if (output_dir == NULL)
 260             {
 261               const gchar *document_dir = g_get_user_special_dir (G_USER_DIRECTORY_DOCUMENTS);
 262
 263               if (document_dir == NULL)
 264                 {
 265                   gchar *current_dir = g_get_current_dir ();
 266                   path = g_build_filename (current_dir, locale_name, NULL);
 267                   g_free (current_dir);
 268                 }
 269               else
 270                 path = g_build_filename (document_dir, locale_name, NULL);
 271
 272               uri = g_filename_to_uri (path, NULL, NULL);
 273             }
 274           else
 275             {
 276               path = g_build_filename (output_dir, locale_name, NULL);
 277               uri = g_filename_to_uri (path, NULL, NULL);
 278             }
 279
 280           g_free (path);
 281           g_free (locale_name);
 282         }
 283     }
 284
 285   return uri;
 286 }
 287
 288 static cairo_status_t
 289 _cairo_write (void                *closure,
 290               const unsigned char *data,
 291               unsigned int         length)
 292 {
 293   GIOChannel *io = (GIOChannel *)closure;
 294   gsize written;
 295   GError *error;
 296
 297   error = NULL;
 298
 299   GTK_NOTE (PRINTING,
 300             g_print ("FILE Backend: Writting %i byte chunk to temp file\n", length));
 301
 302   while (length > 0)
 303     {
 304       g_io_channel_write_chars (io, (const gchar *) data, length, &written, &error);
 305
 306       if (error != NULL)
 307         {
 308           GTK_NOTE (PRINTING,
 309                      g_print ("FILE Backend: Error writting to temp file, %s\n", error->message));
 310
 311           g_error_free (error);
 312           return CAIRO_STATUS_WRITE_ERROR;
 313         }
 314
 315       GTK_NOTE (PRINTING,
 316                 g_print ("FILE Backend: Wrote %i bytes to temp file\n", written));
 317
 318       data += written;
 319       length -= written;
 320     }
 321
 322   return CAIRO_STATUS_SUCCESS;
 323 }
 324
 325
 326 static cairo_surface_t *
 327 file_printer_create_cairo_surface (GtkPrinter       *printer,
 328                                    GtkPrintSettings *settings,
 329                                    gdouble           width,
 330                                    gdouble           height,
 331                                    GIOChannel       *cache_io)
 332 {
 333   cairo_surface_t *surface;
 334   OutputFormat format;
 335   const cairo_svg_version_t *versions;
 336   int num_versions = 0;
 337
 338   format = format_from_settings (settings);
 339
 340   switch (format)
 341     {
 342       default:
 343       case FORMAT_PDF:
 344         surface = cairo_pdf_surface_create_for_stream (_cairo_write, cache_io, width, height);
 345         break;
 346       case FORMAT_PS:
 347         surface = cairo_ps_surface_create_for_stream (_cairo_write, cache_io, width, height);
 348         break;
 349       case FORMAT_SVG:
 350         surface = cairo_svg_surface_create_for_stream (_cairo_write, cache_io, width, height);
 351         cairo_svg_get_versions (&versions, &num_versions);
 352         if (num_versions > 0)
 353           cairo_svg_surface_restrict_to_version (surface, versions[num_versions - 1]);
 354         break;
 355     }
 356
 357   cairo_surface_set_fallback_resolution (surface,
 358                                          2.0 * gtk_print_settings_get_printer_lpi (settings),
 359                                          2.0 * gtk_print_settings_get_printer_lpi (settings));
 360
 361   return surface;
 362 }
 363
 364 typedef struct {
 365   GtkPrintBackend *backend;
 366   GtkPrintJobCompleteFunc callback;
 367   GtkPrintJob *job;
 368   GFileOutputStream *target_io_stream;
 369   gpointer user_data;
 370   GDestroyNotify dnotify;
 371 } _PrintStreamData;
 372
 373 /* expects GDK lock to be held */
 374 static void
 375 file_print_cb_locked (GtkPrintBackendFile *print_backend,
 376                       GError              *error,
 377                       gpointer            user_data)
 378 {
 379   _PrintStreamData *ps = (_PrintStreamData *) user_data;
 380
 381   if (ps->target_io_stream != NULL)
 382     g_output_stream_close (G_OUTPUT_STREAM (ps->target_io_stream), NULL, NULL);
 383
 384   if (ps->callback)
 385     ps->callback (ps->job, ps->user_data, error);
 386
 387   if (ps->dnotify)
 388     ps->dnotify (ps->user_data);
 389
 390   gtk_print_job_set_status (ps->job,
 391                             (error != NULL)?GTK_PRINT_STATUS_FINISHED_ABORTED:GTK_PRINT_STATUS_FINISHED);
 392
 393   if (ps->job)
 394     g_object_unref (ps->job);
 395
 396   g_free (ps);
 397 }
 398
 399 static void
 400 file_print_cb (GtkPrintBackendFile *print_backend,
 401                GError              *error,
 402                gpointer            user_data)
 403 {
 404   GDK_THREADS_ENTER ();
 405
 406   file_print_cb_locked (print_backend, error, user_data);
 407
 408   GDK_THREADS_LEAVE ();
 409 }
 410
 411 static gboolean
 412 file_write (GIOChannel   *source,
 413             GIOCondition  con,
 414             gpointer      user_data)
 415 {
 416   gchar buf[_STREAM_MAX_CHUNK_SIZE];
 417   gsize bytes_read;
 418   GError *error;
 419   GIOStatus read_status;
 420   _PrintStreamData *ps = (_PrintStreamData *) user_data;
 421
 422   error = NULL;
 423
 424   read_status =
 425     g_io_channel_read_chars (source,
 426                              buf,
 427                              _STREAM_MAX_CHUNK_SIZE,
 428                              &bytes_read,
 429                              &error);
 430
 431   if (read_status != G_IO_STATUS_ERROR)
 432     {
 433       gsize bytes_written;
 434
 435       g_output_stream_write_all (G_OUTPUT_STREAM (ps->target_io_stream),
 436                                  buf,
 437                                  bytes_read,
 438                                  &bytes_written,
 439                                  NULL,
 440                                  &error);
 441     }
 442
 443   if (error != NULL || read_status == G_IO_STATUS_EOF)
 444     {
 445       file_print_cb (GTK_PRINT_BACKEND_FILE (ps->backend), error, user_data);
 446
 447       if (error != NULL)
 448         {
 449           GTK_NOTE (PRINTING,
 450                     g_print ("FILE Backend: %s\n", error->message));
 451
 452           g_error_free (error);
 453         }
 454
 455       return FALSE;
 456     }
 457
 458   GTK_NOTE (PRINTING,
 459             g_print ("FILE Backend: Writting %i byte chunk to target file\n", bytes_read));
 460
 461   return TRUE;
 462 }
 463
 464 static void
 465 gtk_print_backend_file_print_stream (GtkPrintBackend        *print_backend,
 466                                      GtkPrintJob            *job,
 467                                      GIOChannel             *data_io,
 468                                      GtkPrintJobCompleteFunc callback,
 469                                      gpointer                user_data,
 470                                      GDestroyNotify          dnotify)
 471 {
 472   GError *internal_error = NULL;
 473   _PrintStreamData *ps;
 474   GtkPrintSettings *settings;
 475   gchar *uri;
 476   GFile *file = NULL;
 477
 478   settings = gtk_print_job_get_settings (job);
 479
 480   ps = g_new0 (_PrintStreamData, 1);
 481   ps->callback = callback;
 482   ps->user_data = user_data;
 483   ps->dnotify = dnotify;
 484   ps->job = g_object_ref (job);
 485   ps->backend = print_backend;
 486
 487   internal_error = NULL;
 488   uri = output_file_from_settings (settings, NULL);
 489
 490   if (uri == NULL)
 491     goto error;
 492
 493   file = g_file_new_for_uri (uri);
 494   ps->target_io_stream = g_file_replace (file, NULL, FALSE, G_FILE_CREATE_NONE, NULL, &internal_error);
 495
 496   g_object_unref (file);
 497   g_free (uri);
 498
 499 error:
 500   if (internal_error != NULL)
 501     {
 502       file_print_cb_locked (GTK_PRINT_BACKEND_FILE (print_backend),
 503                             internal_error, ps);
 504
 505       g_error_free (internal_error);
 506       return;
 507     }
 508
 509   g_io_add_watch (data_io,
 510                   G_IO_IN | G_IO_PRI | G_IO_ERR | G_IO_HUP,
 511                   (GIOFunc) file_write,
 512                   ps);
 513 }
 514
 515 static void
 516 gtk_print_backend_file_init (GtkPrintBackendFile *backend)
 517 {
 518   GtkPrinter *printer;
 519
 520   printer = g_object_new (GTK_TYPE_PRINTER,
 521                           "name", _("Print to File"),
 522                           "backend", backend,
 523                           "is-virtual", TRUE,
 524                           "accepts-pdf", TRUE,
 525                           NULL);
 526
 527   gtk_printer_set_has_details (printer, TRUE);
 528   gtk_printer_set_icon_name (printer, "document-save");
 529   gtk_printer_set_is_active (printer, TRUE);
 530
 531   gtk_print_backend_add_printer (GTK_PRINT_BACKEND (backend), printer);
 532   g_object_unref (printer);
 533
 534   gtk_print_backend_set_list_done (GTK_PRINT_BACKEND (backend));
 535 }
 536
 537 typedef struct {
 538   GtkPrinter          *printer;
 539   GtkPrinterOptionSet *set;
 540 } _OutputFormatChangedData;
 541
 542 static void
 543 set_printer_format_from_option_set (GtkPrinter          *printer,
 544                                     GtkPrinterOptionSet *set)
 545 {
 546   GtkPrinterOption *format_option;
 547   const gchar *value;
 548   gint i;
 549
 550   format_option = gtk_printer_option_set_lookup (set, "output-file-format");
 551   if (format_option && format_option->value)
 552     {
 553       value = format_option->value;
 554       if (value)
 555         {
 556           for (i = 0; i < N_FORMATS; ++i)
 557             if (strcmp (value, formats[i]) == 0)
 558               break;
 559
 560           g_assert (i < N_FORMATS);
 561
 562           switch (i)
 563             {
 564               case FORMAT_PDF:
 565                 gtk_printer_set_accepts_pdf (printer, TRUE);
 566                 gtk_printer_set_accepts_ps (printer, FALSE);
 567                 break;
 568               case FORMAT_PS:
 569                 gtk_printer_set_accepts_pdf (printer, FALSE);
 570                 gtk_printer_set_accepts_ps (printer, TRUE);
 571                 break;
 572               case FORMAT_SVG:
 573               default:
 574                 gtk_printer_set_accepts_pdf (printer, FALSE);
 575                 gtk_printer_set_accepts_ps (printer, FALSE);
 576                 break;
 577             }
 578         }
 579     }
 580 }
 581
 582 static void
 583 file_printer_output_file_format_changed (GtkPrinterOption    *format_option,
 584                                          gpointer             user_data)
 585 {
 586   GtkPrinterOption *uri_option;
 587   gchar            *base = NULL;
 588   _OutputFormatChangedData *data = (_OutputFormatChangedData *) user_data;
 589
 590   if (! format_option->value)
 591     return;
 592
 593   uri_option = gtk_printer_option_set_lookup (data->set,
 594                                               "gtk-main-page-custom-input");
 595
 596   if (uri_option && uri_option->value)
 597     {
 598       const gchar *uri = uri_option->value;
 599       const gchar *dot = strrchr (uri, '.');
 600
 601       if (dot)
 602         {
 603           gint i;
 604
 605           /*  check if the file extension matches one of the known ones  */
 606           for (i = 0; i < N_FORMATS; i++)
 607             if (strcmp (dot + 1, formats[i]) == 0)
 608               break;
 609
 610           if (i < N_FORMATS && strcmp (formats[i], format_option->value))
 611             {
 612               /*  the file extension is known but doesn't match the
 613                *  selected one, strip it away
 614                */
 615               base = g_strndup (uri, dot - uri);
 616             }
 617         }
 618       else
 619         {
 620           /*  there's no file extension  */
 621           base = g_strdup (uri);
 622         }
 623     }
 624
 625   if (base)
 626     {
 627       gchar *tmp = g_strdup_printf ("%s.%s", base, format_option->value);
 628
 629       gtk_printer_option_set (uri_option, tmp);
 630       g_free (tmp);
 631       g_free (base);
 632     }
 633
 634   set_printer_format_from_option_set (data->printer, data->set);
 635 }
 636
 637 static GtkPrinterOptionSet *
 638 file_printer_get_options (GtkPrinter           *printer,
 639                           GtkPrintSettings     *settings,
 640                           GtkPageSetup         *page_setup,
 641                           GtkPrintCapabilities  capabilities)
 642 {
 643   GtkPrinterOptionSet *set;
 644   GtkPrinterOption *option;
 645   const gchar *n_up[] = {"1", "2", "4", "6", "9", "16" };
 646   const gchar *pages_per_sheet = NULL;
 647   const gchar *format_names[N_FORMATS] = { N_("PDF"), N_("Postscript"), N_("SVG") };
 648   const gchar *supported_formats[N_FORMATS];
 649   gchar *display_format_names[N_FORMATS];
 650   gint n_formats = 0;
 651   OutputFormat format;
 652   gchar *uri;
 653   gint current_format = 0;
 654   _OutputFormatChangedData *format_changed_data;
 655
 656   format = format_from_settings (settings);
 657
 658   set = gtk_printer_option_set_new ();
 659
 660   option = gtk_printer_option_new ("gtk-n-up", _("Pages per _sheet:"), GTK_PRINTER_OPTION_TYPE_PICKONE);
 661   gtk_printer_option_choices_from_array (option, G_N_ELEMENTS (n_up),
 662                                          (char **) n_up, (char **) n_up /* FIXME i18n (localised digits)! */);
 663   if (settings)
 664     pages_per_sheet = gtk_print_settings_get (settings, GTK_PRINT_SETTINGS_NUMBER_UP);
 665   if (pages_per_sheet)
 666     gtk_printer_option_set (option, pages_per_sheet);
 667   else
 668     gtk_printer_option_set (option, "1");
 669   gtk_printer_option_set_add (set, option);
 670   g_object_unref (option);
 671
 672   if (capabilities & (GTK_PRINT_CAPABILITY_GENERATE_PDF | GTK_PRINT_CAPABILITY_GENERATE_PS))
 673     {
 674       if (capabilities & GTK_PRINT_CAPABILITY_GENERATE_PDF)
 675         {
 676           if (format == FORMAT_PDF || format == N_FORMATS)
 677             {
 678               format = FORMAT_PDF;
 679               current_format = n_formats;
 680             }
 681           supported_formats[n_formats] = formats[FORMAT_PDF];
 682           display_format_names[n_formats] = _(format_names[FORMAT_PDF]);
 683           n_formats++;
 684         }
 685       if (capabilities & GTK_PRINT_CAPABILITY_GENERATE_PS)
 686         {
 687           if (format == FORMAT_PS || format == N_FORMATS)
 688             current_format = n_formats;
 689           supported_formats[n_formats] = formats[FORMAT_PS];
 690           display_format_names[n_formats] = _(format_names[FORMAT_PS]);
 691           n_formats++;
 692         }
 693     }
 694   else
 695     {
 696       switch (format)
 697         {
 698           default:
 699           case FORMAT_PDF:
 700             current_format = FORMAT_PDF;
 701             break;
 702           case FORMAT_PS:
 703             current_format = FORMAT_PS;
 704             break;
 705           case FORMAT_SVG:
 706             current_format = FORMAT_SVG;
 707             break;
 708         }
 709
 710       for (n_formats = 0; n_formats < N_FORMATS; ++n_formats)
 711         {
 712           supported_formats[n_formats] = formats[n_formats];
 713           display_format_names[n_formats] = _(format_names[n_formats]);
 714         }
 715     }
 716
 717   uri = output_file_from_settings (settings, supported_formats[current_format]);
 718
 719   option = gtk_printer_option_new ("gtk-main-page-custom-input", _("File"),
 720                                    GTK_PRINTER_OPTION_TYPE_FILESAVE);
 721   gtk_printer_option_set_activates_default (option, TRUE);
 722   gtk_printer_option_set (option, uri);
 723   g_free (uri);
 724   option->group = g_strdup ("GtkPrintDialogExtension");
 725   gtk_printer_option_set_add (set, option);
 726
 727   if (n_formats > 1)
 728     {
 729       option = gtk_printer_option_new ("output-file-format", _("_Output format"),
 730                                        GTK_PRINTER_OPTION_TYPE_ALTERNATIVE);
 731       option->group = g_strdup ("GtkPrintDialogExtension");
 732
 733       gtk_printer_option_choices_from_array (option, n_formats,
 734                                              (char **) supported_formats,
 735                                              display_format_names);
 736       gtk_printer_option_set (option, supported_formats[current_format]);
 737       gtk_printer_option_set_add (set, option);
 738
 739       set_printer_format_from_option_set (printer, set);
 740       format_changed_data = g_new (_OutputFormatChangedData, 1);
 741       format_changed_data->printer = printer;
 742       format_changed_data->set = set;
 743       g_signal_connect_data (option, "changed",
 744                              G_CALLBACK (file_printer_output_file_format_changed),
 745                              format_changed_data, (GClosureNotify)g_free, 0);
 746
 747       g_object_unref (option);
 748     }
 749
 750   return set;
 751 }
 752
 753 static void
 754 file_printer_get_settings_from_options (GtkPrinter          *printer,
 755                                         GtkPrinterOptionSet *options,
 756                                         GtkPrintSettings    *settings)
 757 {
 758   GtkPrinterOption *option;
 759
 760   option = gtk_printer_option_set_lookup (options, "gtk-main-page-custom-input");
 761   gtk_print_settings_set (settings, GTK_PRINT_SETTINGS_OUTPUT_URI, option->value);
 762
 763   option = gtk_printer_option_set_lookup (options, "output-file-format");
 764   if (option)
 765     gtk_print_settings_set (settings, GTK_PRINT_SETTINGS_OUTPUT_FILE_FORMAT, option->value);
 766
 767   option = gtk_printer_option_set_lookup (options, "gtk-n-up");
 768   if (option)
 769     gtk_print_settings_set (settings, GTK_PRINT_SETTINGS_NUMBER_UP, option->value);
 770
 771   option = gtk_printer_option_set_lookup (options, "gtk-n-up-layout");
 772   if (option)
 773     gtk_print_settings_set (settings, GTK_PRINT_SETTINGS_NUMBER_UP_LAYOUT, option->value);
 774 }
 775
 776 static void
 777 file_printer_prepare_for_print (GtkPrinter       *printer,
 778                                 GtkPrintJob      *print_job,
 779                                 GtkPrintSettings *settings,
 780                                 GtkPageSetup     *page_setup)
 781 {
 782   gdouble scale;
 783   GtkPrintPages pages;
 784   GtkPageRange *ranges;
 785   gint n_ranges;
 786
 787   pages = gtk_print_settings_get_print_pages (settings);
 788   gtk_print_job_set_pages (print_job, pages);
 789
 790   if (pages == GTK_PRINT_PAGES_RANGES)
 791     ranges = gtk_print_settings_get_page_ranges (settings, &n_ranges);
 792   else
 793     {
 794       ranges = NULL;
 795       n_ranges = 0;
 796     }
 797
 798   gtk_print_job_set_page_ranges (print_job, ranges, n_ranges);
 799   gtk_print_job_set_collate (print_job, gtk_print_settings_get_collate (settings));
 800   gtk_print_job_set_reverse (print_job, gtk_print_settings_get_reverse (settings));
 801   gtk_print_job_set_num_copies (print_job, gtk_print_settings_get_n_copies (settings));
 802   gtk_print_job_set_n_up (print_job, gtk_print_settings_get_number_up (settings));
 803   gtk_print_job_set_n_up_layout (print_job, gtk_print_settings_get_number_up_layout (settings));
 804
 805   scale = gtk_print_settings_get_scale (settings);
 806   if (scale != 100.0)
 807     gtk_print_job_set_scale (print_job, scale / 100.0);
 808
 809   gtk_print_job_set_page_set (print_job, gtk_print_settings_get_page_set (settings));
 810   gtk_print_job_set_rotate (print_job, TRUE);
 811 }
 812
 813 static GList *
 814 file_printer_list_papers (GtkPrinter *printer)
 815 {
 816   GList *result = NULL;
 817   GList *papers, *p;
 818   GtkPageSetup *page_setup;
 819
 820   papers = gtk_paper_size_get_paper_sizes (TRUE);
 821
 822   for (p = papers; p; p = p->next)
 823     {
 824       GtkPaperSize *paper_size = p->data;
 825
 826       page_setup = gtk_page_setup_new ();
 827       gtk_page_setup_set_paper_size (page_setup, paper_size);
 828       gtk_paper_size_free (paper_size);
 829       result = g_list_prepend (result, page_setup);
 830     }
 831
 832   g_list_free (papers);
 833
 834   return g_list_reverse (result);
 835 }
 836
 837 static GtkPageSetup *
 838 file_printer_get_default_page_size (GtkPrinter *printer)
 839 {
 840   GtkPageSetup *result = NULL;
 841
 842   return result;
 843 }