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 static void
 374 file_print_cb (GtkPrintBackendFile *print_backend,
 375                GError              *error,
 376                gpointer            user_data)
 377 {
 378   _PrintStreamData *ps = (_PrintStreamData *) user_data;
 379
 380   GDK_THREADS_ENTER ();
 381
 382   if (ps->target_io_stream != NULL)
 383     g_output_stream_close (G_OUTPUT_STREAM (ps->target_io_stream), NULL, NULL);
 384
 385   if (ps->callback)
 386     ps->callback (ps->job, ps->user_data, error);
 387
 388   if (ps->dnotify)
 389     ps->dnotify (ps->user_data);
 390
 391   gtk_print_job_set_status (ps->job,
 392                             (error != NULL)?GTK_PRINT_STATUS_FINISHED_ABORTED:GTK_PRINT_STATUS_FINISHED);
 393
 394   if (ps->job)
 395     g_object_unref (ps->job);
 396
 397   g_free (ps);
 398
 399   GDK_THREADS_LEAVE ();
 400 }
 401
 402 static gboolean
 403 file_write (GIOChannel   *source,
 404             GIOCondition  con,
 405             gpointer      user_data)
 406 {
 407   gchar buf[_STREAM_MAX_CHUNK_SIZE];
 408   gsize bytes_read;
 409   GError *error;
 410   GIOStatus read_status;
 411   _PrintStreamData *ps = (_PrintStreamData *) user_data;
 412
 413   error = NULL;
 414
 415   read_status =
 416     g_io_channel_read_chars (source,
 417                              buf,
 418                              _STREAM_MAX_CHUNK_SIZE,
 419                              &bytes_read,
 420                              &error);
 421
 422   if (read_status != G_IO_STATUS_ERROR)
 423     {
 424       gsize bytes_written;
 425
 426       g_output_stream_write_all (G_OUTPUT_STREAM (ps->target_io_stream),
 427                                  buf,
 428                                  bytes_read,
 429                                  &bytes_written,
 430                                  NULL,
 431                                  &error);
 432     }
 433
 434   if (error != NULL || read_status == G_IO_STATUS_EOF)
 435     {
 436       file_print_cb (GTK_PRINT_BACKEND_FILE (ps->backend), error, user_data);
 437
 438       if (error != NULL)
 439         {
 440           GTK_NOTE (PRINTING,
 441                     g_print ("FILE Backend: %s\n", error->message));
 442
 443           g_error_free (error);
 444         }
 445
 446       return FALSE;
 447     }
 448
 449   GTK_NOTE (PRINTING,
 450             g_print ("FILE Backend: Writting %i byte chunk to target file\n", bytes_read));
 451
 452   return TRUE;
 453 }
 454
 455 static void
 456 gtk_print_backend_file_print_stream (GtkPrintBackend        *print_backend,
 457                                      GtkPrintJob            *job,
 458                                      GIOChannel             *data_io,
 459                                      GtkPrintJobCompleteFunc callback,
 460                                      gpointer                user_data,
 461                                      GDestroyNotify          dnotify)
 462 {
 463   GError *internal_error = NULL;
 464   _PrintStreamData *ps;
 465   GtkPrintSettings *settings;
 466   gchar *uri;
 467   GFile *file = NULL;
 468
 469   settings = gtk_print_job_get_settings (job);
 470
 471   ps = g_new0 (_PrintStreamData, 1);
 472   ps->callback = callback;
 473   ps->user_data = user_data;
 474   ps->dnotify = dnotify;
 475   ps->job = g_object_ref (job);
 476   ps->backend = print_backend;
 477
 478   internal_error = NULL;
 479   uri = output_file_from_settings (settings, NULL);
 480
 481   if (uri == NULL)
 482     goto error;
 483
 484   file = g_file_new_for_uri (uri);
 485   ps->target_io_stream = g_file_replace (file, NULL, FALSE, G_FILE_CREATE_NONE, NULL, &internal_error);
 486
 487   g_object_unref (file);
 488   g_free (uri);
 489
 490 error:
 491   if (internal_error != NULL)
 492     {
 493       file_print_cb (GTK_PRINT_BACKEND_FILE (print_backend),
 494                     internal_error, ps);
 495
 496       g_error_free (internal_error);
 497       return;
 498     }
 499
 500   g_io_add_watch (data_io,
 501                   G_IO_IN | G_IO_PRI | G_IO_ERR | G_IO_HUP,
 502                   (GIOFunc) file_write,
 503                   ps);
 504 }
 505
 506 static void
 507 gtk_print_backend_file_init (GtkPrintBackendFile *backend)
 508 {
 509   GtkPrinter *printer;
 510
 511   printer = g_object_new (GTK_TYPE_PRINTER,
 512                           "name", _("Print to File"),
 513                           "backend", backend,
 514                           "is-virtual", TRUE,
 515                           "accepts-pdf", TRUE,
 516                           NULL);
 517
 518   gtk_printer_set_has_details (printer, TRUE);
 519   gtk_printer_set_icon_name (printer, "document-save");
 520   gtk_printer_set_is_active (printer, TRUE);
 521
 522   gtk_print_backend_add_printer (GTK_PRINT_BACKEND (backend), printer);
 523   g_object_unref (printer);
 524
 525   gtk_print_backend_set_list_done (GTK_PRINT_BACKEND (backend));
 526 }
 527
 528 typedef struct {
 529   GtkPrinter          *printer;
 530   GtkPrinterOptionSet *set;
 531 } _OutputFormatChangedData;
 532
 533 static void
 534 set_printer_format_from_option_set (GtkPrinter          *printer,
 535                                     GtkPrinterOptionSet *set)
 536 {
 537   GtkPrinterOption *format_option;
 538   const gchar *value;
 539   gint i;
 540
 541   format_option = gtk_printer_option_set_lookup (set, "output-file-format");
 542   if (format_option && format_option->value)
 543     {
 544       value = format_option->value;
 545       if (value)
 546         {
 547           for (i = 0; i < N_FORMATS; ++i)
 548             if (strcmp (value, formats[i]) == 0)
 549               break;
 550
 551           g_assert (i < N_FORMATS);
 552
 553           switch (i)
 554             {
 555               case FORMAT_PDF:
 556                 gtk_printer_set_accepts_pdf (printer, TRUE);
 557                 gtk_printer_set_accepts_ps (printer, FALSE);
 558                 break;
 559               case FORMAT_PS:
 560                 gtk_printer_set_accepts_pdf (printer, FALSE);
 561                 gtk_printer_set_accepts_ps (printer, TRUE);
 562                 break;
 563               case FORMAT_SVG:
 564               default:
 565                 gtk_printer_set_accepts_pdf (printer, FALSE);
 566                 gtk_printer_set_accepts_ps (printer, FALSE);
 567                 break;
 568             }
 569         }
 570     }
 571 }
 572
 573 static void
 574 file_printer_output_file_format_changed (GtkPrinterOption    *format_option,
 575                                          gpointer             user_data)
 576 {
 577   GtkPrinterOption *uri_option;
 578   gchar            *base = NULL;
 579   _OutputFormatChangedData *data = (_OutputFormatChangedData *) user_data;
 580
 581   if (! format_option->value)
 582     return;
 583
 584   uri_option = gtk_printer_option_set_lookup (data->set,
 585                                               "gtk-main-page-custom-input");
 586
 587   if (uri_option && uri_option->value)
 588     {
 589       const gchar *uri = uri_option->value;
 590       const gchar *dot = strrchr (uri, '.');
 591
 592       if (dot)
 593         {
 594           gint i;
 595
 596           /*  check if the file extension matches one of the known ones  */
 597           for (i = 0; i < N_FORMATS; i++)
 598             if (strcmp (dot + 1, formats[i]) == 0)
 599               break;
 600
 601           if (i < N_FORMATS && strcmp (formats[i], format_option->value))
 602             {
 603               /*  the file extension is known but doesn't match the
 604                *  selected one, strip it away
 605                */
 606               base = g_strndup (uri, dot - uri);
 607             }
 608         }
 609       else
 610         {
 611           /*  there's no file extension  */
 612           base = g_strdup (uri);
 613         }
 614     }
 615
 616   if (base)
 617     {
 618       gchar *tmp = g_strdup_printf ("%s.%s", base, format_option->value);
 619
 620       gtk_printer_option_set (uri_option, tmp);
 621       g_free (tmp);
 622       g_free (base);
 623     }
 624
 625   set_printer_format_from_option_set (data->printer, data->set);
 626 }
 627
 628 static GtkPrinterOptionSet *
 629 file_printer_get_options (GtkPrinter           *printer,
 630                           GtkPrintSettings     *settings,
 631                           GtkPageSetup         *page_setup,
 632                           GtkPrintCapabilities  capabilities)
 633 {
 634   GtkPrinterOptionSet *set;
 635   GtkPrinterOption *option;
 636   const gchar *n_up[] = {"1", "2", "4", "6", "9", "16" };
 637   const gchar *pages_per_sheet = NULL;
 638   const gchar *format_names[N_FORMATS] = { N_("PDF"), N_("Postscript"), N_("SVG") };
 639   const gchar *supported_formats[N_FORMATS];
 640   gchar *display_format_names[N_FORMATS];
 641   gint n_formats = 0;
 642   OutputFormat format;
 643   gchar *uri;
 644   gint current_format = 0;
 645   _OutputFormatChangedData *format_changed_data;
 646
 647   format = format_from_settings (settings);
 648
 649   set = gtk_printer_option_set_new ();
 650
 651   option = gtk_printer_option_new ("gtk-n-up", _("Pages per _sheet:"), GTK_PRINTER_OPTION_TYPE_PICKONE);
 652   gtk_printer_option_choices_from_array (option, G_N_ELEMENTS (n_up),
 653                                          (char **) n_up, (char **) n_up /* FIXME i18n (localised digits)! */);
 654   if (settings)
 655     pages_per_sheet = gtk_print_settings_get (settings, GTK_PRINT_SETTINGS_NUMBER_UP);
 656   if (pages_per_sheet)
 657     gtk_printer_option_set (option, pages_per_sheet);
 658   else
 659     gtk_printer_option_set (option, "1");
 660   gtk_printer_option_set_add (set, option);
 661   g_object_unref (option);
 662
 663   if (capabilities & (GTK_PRINT_CAPABILITY_GENERATE_PDF | GTK_PRINT_CAPABILITY_GENERATE_PS))
 664     {
 665       if (capabilities & GTK_PRINT_CAPABILITY_GENERATE_PDF)
 666         {
 667           if (format == FORMAT_PDF || format == N_FORMATS)
 668             {
 669               format = FORMAT_PDF;
 670               current_format = n_formats;
 671             }
 672           supported_formats[n_formats] = formats[FORMAT_PDF];
 673           display_format_names[n_formats] = _(format_names[FORMAT_PDF]);
 674           n_formats++;
 675         }
 676       if (capabilities & GTK_PRINT_CAPABILITY_GENERATE_PS)
 677         {
 678           if (format == FORMAT_PS || format == N_FORMATS)
 679             current_format = n_formats;
 680           supported_formats[n_formats] = formats[FORMAT_PS];
 681           display_format_names[n_formats] = _(format_names[FORMAT_PS]);
 682           n_formats++;
 683         }
 684     }
 685   else
 686     {
 687       switch (format)
 688         {
 689           default:
 690           case FORMAT_PDF:
 691             current_format = FORMAT_PDF;
 692             break;
 693           case FORMAT_PS:
 694             current_format = FORMAT_PS;
 695             break;
 696           case FORMAT_SVG:
 697             current_format = FORMAT_SVG;
 698             break;
 699         }
 700
 701       for (n_formats = 0; n_formats < N_FORMATS; ++n_formats)
 702         {
 703           supported_formats[n_formats] = formats[n_formats];
 704           display_format_names[n_formats] = _(format_names[n_formats]);
 705         }
 706     }
 707
 708   uri = output_file_from_settings (settings, supported_formats[current_format]);
 709
 710   option = gtk_printer_option_new ("gtk-main-page-custom-input", _("File"),
 711                                    GTK_PRINTER_OPTION_TYPE_FILESAVE);
 712   gtk_printer_option_set_activates_default (option, TRUE);
 713   gtk_printer_option_set (option, uri);
 714   g_free (uri);
 715   option->group = g_strdup ("GtkPrintDialogExtension");
 716   gtk_printer_option_set_add (set, option);
 717
 718   if (n_formats > 1)
 719     {
 720       option = gtk_printer_option_new ("output-file-format", _("_Output format"),
 721                                        GTK_PRINTER_OPTION_TYPE_ALTERNATIVE);
 722       option->group = g_strdup ("GtkPrintDialogExtension");
 723
 724       gtk_printer_option_choices_from_array (option, n_formats,
 725                                              (char **) supported_formats,
 726                                              display_format_names);
 727       gtk_printer_option_set (option, supported_formats[current_format]);
 728       gtk_printer_option_set_add (set, option);
 729
 730       set_printer_format_from_option_set (printer, set);
 731       format_changed_data = g_new (_OutputFormatChangedData, 1);
 732       format_changed_data->printer = printer;
 733       format_changed_data->set = set;
 734       g_signal_connect_data (option, "changed",
 735                              G_CALLBACK (file_printer_output_file_format_changed),
 736                              format_changed_data, (GClosureNotify)g_free, 0);
 737
 738       g_object_unref (option);
 739     }
 740
 741   return set;
 742 }
 743
 744 static void
 745 file_printer_get_settings_from_options (GtkPrinter          *printer,
 746                                         GtkPrinterOptionSet *options,
 747                                         GtkPrintSettings    *settings)
 748 {
 749   GtkPrinterOption *option;
 750
 751   option = gtk_printer_option_set_lookup (options, "gtk-main-page-custom-input");
 752   gtk_print_settings_set (settings, GTK_PRINT_SETTINGS_OUTPUT_URI, option->value);
 753
 754   option = gtk_printer_option_set_lookup (options, "output-file-format");
 755   if (option)
 756     gtk_print_settings_set (settings, GTK_PRINT_SETTINGS_OUTPUT_FILE_FORMAT, option->value);
 757
 758   option = gtk_printer_option_set_lookup (options, "gtk-n-up");
 759   if (option)
 760     gtk_print_settings_set (settings, GTK_PRINT_SETTINGS_NUMBER_UP, option->value);
 761
 762   option = gtk_printer_option_set_lookup (options, "gtk-n-up-layout");
 763   if (option)
 764     gtk_print_settings_set (settings, GTK_PRINT_SETTINGS_NUMBER_UP_LAYOUT, option->value);
 765 }
 766
 767 static void
 768 file_printer_prepare_for_print (GtkPrinter       *printer,
 769                                 GtkPrintJob      *print_job,
 770                                 GtkPrintSettings *settings,
 771                                 GtkPageSetup     *page_setup)
 772 {
 773   gdouble scale;
 774   GtkPrintPages pages;
 775   GtkPageRange *ranges;
 776   gint n_ranges;
 777
 778   pages = gtk_print_settings_get_print_pages (settings);
 779   gtk_print_job_set_pages (print_job, pages);
 780
 781   if (pages == GTK_PRINT_PAGES_RANGES)
 782     ranges = gtk_print_settings_get_page_ranges (settings, &n_ranges);
 783   else
 784     {
 785       ranges = NULL;
 786       n_ranges = 0;
 787     }
 788
 789   gtk_print_job_set_page_ranges (print_job, ranges, n_ranges);
 790   gtk_print_job_set_collate (print_job, gtk_print_settings_get_collate (settings));
 791   gtk_print_job_set_reverse (print_job, gtk_print_settings_get_reverse (settings));
 792   gtk_print_job_set_num_copies (print_job, gtk_print_settings_get_n_copies (settings));
 793   gtk_print_job_set_n_up (print_job, gtk_print_settings_get_number_up (settings));
 794   gtk_print_job_set_n_up_layout (print_job, gtk_print_settings_get_number_up_layout (settings));
 795
 796   scale = gtk_print_settings_get_scale (settings);
 797   if (scale != 100.0)
 798     gtk_print_job_set_scale (print_job, scale / 100.0);
 799
 800   gtk_print_job_set_page_set (print_job, gtk_print_settings_get_page_set (settings));
 801   gtk_print_job_set_rotate (print_job, TRUE);
 802 }
 803
 804 static GList *
 805 file_printer_list_papers (GtkPrinter *printer)
 806 {
 807   GList *result = NULL;
 808   GList *papers, *p;
 809   GtkPageSetup *page_setup;
 810
 811   papers = gtk_paper_size_get_paper_sizes (TRUE);
 812
 813   for (p = papers; p; p = p->next)
 814     {
 815       GtkPaperSize *paper_size = p->data;
 816
 817       page_setup = gtk_page_setup_new ();
 818       gtk_page_setup_set_paper_size (page_setup, paper_size);
 819       gtk_paper_size_free (paper_size);
 820       result = g_list_prepend (result, page_setup);
 821     }
 822
 823   g_list_free (papers);
 824
 825   return g_list_reverse (result);
 826 }
 827
 828 static GtkPageSetup *
 829 file_printer_get_default_page_size (GtkPrinter *printer)
 830 {
 831   GtkPageSetup *result = NULL;
 832
 833   return result;
 834 }