Pileus Git - ~andy/gtk/blob - gtk/gtkprintoperation-unix.c

   1 /* GTK - The GIMP Toolkit
   2  * gtkprintoperation-unix.c: Print Operation Details for Unix
   3  *                           and Unix-like platforms
   4  * Copyright (C) 2006, 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 #ifdef HAVE_UNISTD_H
  24 #include <unistd.h>
  25 #endif
  26 #include <sys/types.h>
  27 #include <sys/stat.h>
  28 #include <string.h>
  29 #include <errno.h>
  30 #include <stdlib.h>
  31 #include <fcntl.h>
  32
  33 #include <glib/gstdio.h>
  34 #include "gtkprintoperation-private.h"
  35 #include "gtkmessagedialog.h"
  36
  37 #include <cairo-pdf.h>
  38 #include <cairo-ps.h>
  39 #include "gtkprivate.h"
  40 #include "gtkprintunixdialog.h"
  41 #include "gtkpagesetupunixdialog.h"
  42 #include "gtkprintbackend.h"
  43 #include "gtkprinter.h"
  44 #include "gtkprintjob.h"
  45 #include "gtklabel.h"
  46 #include "gtkintl.h"
  47 #include "gtkalias.h"
  48
  49 typedef struct
  50 {
  51   GtkWindow *parent;        /* just in case we need to throw error dialogs */
  52   GMainLoop *loop;
  53   gboolean data_sent;
  54
  55   /* Real printing (not preview) */
  56   GtkPrintJob *job;         /* the job we are sending to the printer */
  57   cairo_surface_t *surface;
  58   gulong job_status_changed_tag;
  59
  60
  61 } GtkPrintOperationUnix;
  62
  63 typedef struct _PrinterFinder PrinterFinder;
  64
  65 static void printer_finder_free (PrinterFinder *finder);
  66 static void find_printer        (const gchar   *printer,
  67                                  GFunc          func,
  68                                  gpointer       data);
  69
  70 static void
  71 unix_start_page (GtkPrintOperation *op,
  72                  GtkPrintContext   *print_context,
  73                  GtkPageSetup      *page_setup)
  74 {
  75   GtkPrintOperationUnix *op_unix;
  76   GtkPaperSize *paper_size;
  77   cairo_surface_type_t type;
  78   gdouble w, h;
  79
  80   op_unix = op->priv->platform_data;
  81
  82   paper_size = gtk_page_setup_get_paper_size (page_setup);
  83
  84   w = gtk_paper_size_get_width (paper_size, GTK_UNIT_POINTS);
  85   h = gtk_paper_size_get_height (paper_size, GTK_UNIT_POINTS);
  86
  87   type = cairo_surface_get_type (op_unix->surface);
  88
  89   if ((op->priv->manual_number_up < 2) ||
  90       (op->priv->page_position % op->priv->manual_number_up == 0))
  91     {
  92       if (type == CAIRO_SURFACE_TYPE_PS)
  93         {
  94           cairo_ps_surface_set_size (op_unix->surface, w, h);
  95           cairo_ps_surface_dsc_begin_page_setup (op_unix->surface);
  96           switch (gtk_page_setup_get_orientation (page_setup))
  97             {
  98               case GTK_PAGE_ORIENTATION_PORTRAIT:
  99               case GTK_PAGE_ORIENTATION_REVERSE_PORTRAIT:
 100                 cairo_ps_surface_dsc_comment (op_unix->surface, "%%PageOrientation: Portrait");
 101                 break;
 102
 103               case GTK_PAGE_ORIENTATION_LANDSCAPE:
 104               case GTK_PAGE_ORIENTATION_REVERSE_LANDSCAPE:
 105                 cairo_ps_surface_dsc_comment (op_unix->surface, "%%PageOrientation: Landscape");
 106                 break;
 107             }
 108          }
 109       else if (type == CAIRO_SURFACE_TYPE_PDF)
 110         {
 111           cairo_pdf_surface_set_size (op_unix->surface, w, h);
 112         }
 113     }
 114 }
 115
 116 static void
 117 unix_end_page (GtkPrintOperation *op,
 118                GtkPrintContext   *print_context)
 119 {
 120   cairo_t *cr;
 121
 122   cr = gtk_print_context_get_cairo_context (print_context);
 123
 124   if ((op->priv->manual_number_up < 2) ||
 125       ((op->priv->page_position + 1) % op->priv->manual_number_up == 0) ||
 126       (op->priv->page_position == op->priv->nr_of_pages_to_print - 1))
 127     cairo_show_page (cr);
 128 }
 129
 130 static void
 131 op_unix_free (GtkPrintOperationUnix *op_unix)
 132 {
 133   if (op_unix->job)
 134     {
 135       g_signal_handler_disconnect (op_unix->job,
 136                                    op_unix->job_status_changed_tag);
 137       g_object_unref (op_unix->job);
 138     }
 139
 140   g_free (op_unix);
 141 }
 142
 143 static gchar *
 144 shell_command_substitute_file (const gchar *cmd,
 145                                const gchar *pdf_filename,
 146                                const gchar *settings_filename,
 147                                gboolean    *pdf_filename_replaced,
 148                                gboolean    *settings_filename_replaced)
 149 {
 150   const gchar *inptr, *start;
 151   GString *final;
 152
 153   g_return_val_if_fail (cmd != NULL, NULL);
 154   g_return_val_if_fail (pdf_filename != NULL, NULL);
 155   g_return_val_if_fail (settings_filename != NULL, NULL);
 156
 157   final = g_string_new (NULL);
 158
 159   *pdf_filename_replaced = FALSE;
 160   *settings_filename_replaced = FALSE;
 161
 162   start = inptr = cmd;
 163   while ((inptr = strchr (inptr, '%')) != NULL)
 164     {
 165       g_string_append_len (final, start, inptr - start);
 166       inptr++;
 167       switch (*inptr)
 168         {
 169           case 'f':
 170             g_string_append (final, pdf_filename);
 171             *pdf_filename_replaced = TRUE;
 172             break;
 173
 174           case 's':
 175             g_string_append (final, settings_filename);
 176             *settings_filename_replaced = TRUE;
 177             break;
 178
 179           case '%':
 180             g_string_append_c (final, '%');
 181             break;
 182
 183           default:
 184             g_string_append_c (final, '%');
 185             if (*inptr)
 186               g_string_append_c (final, *inptr);
 187             break;
 188         }
 189       if (*inptr)
 190         inptr++;
 191       start = inptr;
 192     }
 193   g_string_append (final, start);
 194
 195   return g_string_free (final, FALSE);
 196 }
 197
 198 void
 199 _gtk_print_operation_platform_backend_launch_preview (GtkPrintOperation *op,
 200                                                       cairo_surface_t   *surface,
 201                                                       GtkWindow         *parent,
 202                                                       const gchar       *filename)
 203 {
 204   gint argc;
 205   gchar **argv;
 206   gchar *cmd;
 207   gchar *preview_cmd;
 208   GtkSettings *settings;
 209   GtkPrintSettings *print_settings = NULL;
 210   GtkPageSetup *page_setup;
 211   GKeyFile *key_file = NULL;
 212   gchar *data = NULL;
 213   gsize data_len;
 214   gchar *settings_filename = NULL;
 215   gchar *quoted_filename;
 216   gchar *quoted_settings_filename;
 217   gboolean filename_used = FALSE;
 218   gboolean settings_used = FALSE;
 219   GdkScreen *screen;
 220   GError *error = NULL;
 221   gint fd;
 222   gboolean retval;
 223
 224   cairo_surface_destroy (surface);
 225
 226   if (parent)
 227     screen = gtk_window_get_screen (parent);
 228   else
 229     screen = gdk_screen_get_default ();
 230
 231   fd = g_file_open_tmp ("settingsXXXXXX.ini", &settings_filename, &error);
 232   if (fd < 0)
 233     goto out;
 234
 235   key_file = g_key_file_new ();
 236
 237   print_settings = gtk_print_settings_copy (gtk_print_operation_get_print_settings (op));
 238
 239   if (print_settings != NULL)
 240     {
 241       gtk_print_settings_set_reverse (print_settings, FALSE);
 242       gtk_print_settings_set_page_set (print_settings, GTK_PAGE_SET_ALL);
 243       gtk_print_settings_set_scale (print_settings, 1.0);
 244       gtk_print_settings_set_number_up (print_settings, 1);
 245       gtk_print_settings_set_number_up_layout (print_settings, GTK_NUMBER_UP_LAYOUT_LEFT_TO_RIGHT_TOP_TO_BOTTOM);
 246
 247       /*  These removals are neccessary because cups-* settings have higher priority
 248        *  than normal settings.
 249        */
 250       gtk_print_settings_unset (print_settings, "cups-reverse");
 251       gtk_print_settings_unset (print_settings, "cups-page-set");
 252       gtk_print_settings_unset (print_settings, "cups-scale");
 253       gtk_print_settings_unset (print_settings, "cups-number-up");
 254       gtk_print_settings_unset (print_settings, "cups-number-up-layout");
 255
 256       gtk_print_settings_to_key_file (print_settings, key_file, NULL);
 257       g_object_unref (print_settings);
 258     }
 259
 260   page_setup = gtk_print_context_get_page_setup (op->priv->print_context);
 261   gtk_page_setup_to_key_file (page_setup, key_file, NULL);
 262
 263   g_key_file_set_string (key_file, "Print Job", "title", op->priv->job_name);
 264
 265   data = g_key_file_to_data (key_file, &data_len, &error);
 266   if (!data)
 267     goto out;
 268
 269   retval = g_file_set_contents (settings_filename, data, data_len, &error);
 270   if (!retval)
 271     goto out;
 272
 273   settings = gtk_settings_get_for_screen (screen);
 274   g_object_get (settings, "gtk-print-preview-command", &preview_cmd, NULL);
 275
 276   quoted_filename = g_shell_quote (filename);
 277   quoted_settings_filename = g_shell_quote (settings_filename);
 278   cmd = shell_command_substitute_file (preview_cmd, quoted_filename, quoted_settings_filename, &filename_used, &settings_used);
 279   g_shell_parse_argv (cmd, &argc, &argv, &error);
 280
 281   g_free (preview_cmd);
 282   g_free (quoted_filename);
 283   g_free (quoted_settings_filename);
 284   g_free (cmd);
 285
 286   if (error != NULL)
 287     goto out;
 288
 289   gdk_spawn_on_screen (screen, NULL, argv, NULL, G_SPAWN_SEARCH_PATH, NULL, NULL, NULL, &error);
 290
 291   g_strfreev (argv);
 292
 293   if (error != NULL)
 294     {
 295       gchar* uri;
 296
 297       g_warning ("%s %s", _("Error launching preview"), error->message);
 298
 299       g_error_free (error);
 300       error = NULL;
 301       uri = g_filename_to_uri (filename, NULL, NULL);
 302       gtk_show_uri (screen, uri, GDK_CURRENT_TIME, &error);
 303       g_free (uri);
 304     }
 305
 306  out:
 307   if (error != NULL)
 308     {
 309       GtkWidget *edialog;
 310       edialog = gtk_message_dialog_new (parent,
 311                                         GTK_DIALOG_DESTROY_WITH_PARENT,
 312                                         GTK_MESSAGE_ERROR,
 313                                         GTK_BUTTONS_CLOSE,
 314                                         _("Error launching preview") /* FIXME better text */);
 315       gtk_message_dialog_format_secondary_text (GTK_MESSAGE_DIALOG (edialog),
 316                                                 "%s", error->message);
 317       g_signal_connect (edialog, "response",
 318                         G_CALLBACK (gtk_widget_destroy), NULL);
 319
 320       gtk_window_present (GTK_WINDOW (edialog));
 321
 322       g_error_free (error);
 323
 324       filename_used = FALSE;
 325       settings_used = FALSE;
 326    }
 327
 328   if (!filename_used)
 329     g_unlink (filename);
 330
 331   if (!settings_used)
 332     g_unlink (settings_filename);
 333
 334   if (fd > 0)
 335     close (fd);
 336
 337   if (key_file)
 338     g_key_file_free (key_file);
 339   g_free (data);
 340   g_free (settings_filename);
 341 }
 342
 343 static void
 344 unix_finish_send  (GtkPrintJob *job,
 345                    gpointer     user_data,
 346                    GError      *error)
 347 {
 348   GtkPrintOperation *op = (GtkPrintOperation *) user_data;
 349   GtkPrintOperationUnix *op_unix = op->priv->platform_data;
 350
 351   if (error != NULL)
 352     {
 353       GtkWidget *edialog;
 354       edialog = gtk_message_dialog_new (op_unix->parent,
 355                                         GTK_DIALOG_DESTROY_WITH_PARENT,
 356                                         GTK_MESSAGE_ERROR,
 357                                         GTK_BUTTONS_CLOSE,
 358                                         _("Error printing") /* FIXME better text */);
 359       gtk_message_dialog_format_secondary_text (GTK_MESSAGE_DIALOG (edialog),
 360                                                 "%s", error->message);
 361       gtk_window_set_modal (GTK_WINDOW (edialog), TRUE);
 362       g_signal_connect (edialog, "response",
 363                         G_CALLBACK (gtk_widget_destroy), NULL);
 364
 365       gtk_window_present (GTK_WINDOW (edialog));
 366     }
 367
 368   op_unix->data_sent = TRUE;
 369
 370   if (op_unix->loop)
 371     g_main_loop_quit (op_unix->loop);
 372
 373   g_object_unref (op);
 374 }
 375
 376 static void
 377 unix_end_run (GtkPrintOperation *op,
 378               gboolean           wait,
 379               gboolean           cancelled)
 380 {
 381   GtkPrintOperationUnix *op_unix = op->priv->platform_data;
 382
 383   cairo_surface_finish (op_unix->surface);
 384
 385   if (cancelled)
 386     return;
 387
 388   if (wait)
 389     op_unix->loop = g_main_loop_new (NULL, FALSE);
 390
 391   /* TODO: Check for error */
 392   if (op_unix->job != NULL)
 393     {
 394       g_object_ref (op);
 395       gtk_print_job_send (op_unix->job,
 396                           unix_finish_send,
 397                           op, NULL);
 398     }
 399
 400   if (wait)
 401     {
 402       g_object_ref (op);
 403       if (!op_unix->data_sent)
 404         {
 405           GDK_THREADS_LEAVE ();
 406           g_main_loop_run (op_unix->loop);
 407           GDK_THREADS_ENTER ();
 408         }
 409       g_main_loop_unref (op_unix->loop);
 410       op_unix->loop = NULL;
 411       g_object_unref (op);
 412     }
 413 }
 414
 415 static void
 416 job_status_changed_cb (GtkPrintJob       *job,
 417                        GtkPrintOperation *op)
 418 {
 419   _gtk_print_operation_set_status (op, gtk_print_job_get_status (job), NULL);
 420 }
 421
 422
 423 static void
 424 print_setup_changed_cb (GtkPrintUnixDialog *print_dialog,
 425                         GParamSpec         *pspec,
 426                         gpointer            user_data)
 427 {
 428   GtkPageSetup             *page_setup;
 429   GtkPrintSettings         *print_settings;
 430   GtkPrintOperation        *op = user_data;
 431   GtkPrintOperationPrivate *priv = op->priv;
 432
 433   page_setup = gtk_print_unix_dialog_get_page_setup (print_dialog);
 434   print_settings = gtk_print_unix_dialog_get_settings (print_dialog);
 435
 436   g_signal_emit_by_name (op,
 437                          "update-custom-widget",
 438                          priv->custom_widget,
 439                          page_setup,
 440                          print_settings);
 441 }
 442
 443 static GtkWidget *
 444 get_print_dialog (GtkPrintOperation *op,
 445                   GtkWindow         *parent)
 446 {
 447   GtkPrintOperationPrivate *priv = op->priv;
 448   GtkWidget *pd, *label;
 449   const gchar *custom_tab_label;
 450
 451   pd = gtk_print_unix_dialog_new (NULL, parent);
 452
 453   gtk_print_unix_dialog_set_manual_capabilities (GTK_PRINT_UNIX_DIALOG (pd),
 454                                                  GTK_PRINT_CAPABILITY_PAGE_SET |
 455                                                  GTK_PRINT_CAPABILITY_COPIES |
 456                                                  GTK_PRINT_CAPABILITY_COLLATE |
 457                                                  GTK_PRINT_CAPABILITY_REVERSE |
 458                                                  GTK_PRINT_CAPABILITY_SCALE |
 459                                                  GTK_PRINT_CAPABILITY_PREVIEW |
 460                                                  GTK_PRINT_CAPABILITY_NUMBER_UP |
 461                                                  GTK_PRINT_CAPABILITY_NUMBER_UP_LAYOUT);
 462
 463   if (priv->print_settings)
 464     gtk_print_unix_dialog_set_settings (GTK_PRINT_UNIX_DIALOG (pd),
 465                                         priv->print_settings);
 466
 467   if (priv->default_page_setup)
 468     gtk_print_unix_dialog_set_page_setup (GTK_PRINT_UNIX_DIALOG (pd),
 469                                           priv->default_page_setup);
 470
 471   gtk_print_unix_dialog_set_embed_page_setup (GTK_PRINT_UNIX_DIALOG (pd),
 472                                               priv->embed_page_setup);
 473
 474   gtk_print_unix_dialog_set_current_page (GTK_PRINT_UNIX_DIALOG (pd),
 475                                           priv->current_page);
 476
 477   gtk_print_unix_dialog_set_support_selection (GTK_PRINT_UNIX_DIALOG (pd),
 478                                                priv->support_selection);
 479
 480   gtk_print_unix_dialog_set_has_selection (GTK_PRINT_UNIX_DIALOG (pd),
 481                                            priv->has_selection);
 482
 483   g_signal_emit_by_name (op, "create-custom-widget",
 484                          &priv->custom_widget);
 485
 486   if (priv->custom_widget)
 487     {
 488       custom_tab_label = priv->custom_tab_label;
 489
 490       if (custom_tab_label == NULL)
 491         {
 492           custom_tab_label = g_get_application_name ();
 493           if (custom_tab_label == NULL)
 494             custom_tab_label = _("Application");
 495         }
 496
 497       label = gtk_label_new (custom_tab_label);
 498
 499       gtk_print_unix_dialog_add_custom_tab (GTK_PRINT_UNIX_DIALOG (pd),
 500                                             priv->custom_widget, label);
 501
 502       g_signal_connect (pd, "notify::selected-printer", (GCallback) print_setup_changed_cb, op);
 503       g_signal_connect (pd, "notify::page-setup", (GCallback) print_setup_changed_cb, op);
 504     }
 505
 506   return pd;
 507 }
 508
 509 typedef struct
 510 {
 511   GtkPrintOperation           *op;
 512   gboolean                     do_print;
 513   gboolean                     do_preview;
 514   GtkPrintOperationResult      result;
 515   GtkPrintOperationPrintFunc   print_cb;
 516   GDestroyNotify               destroy;
 517   GtkWindow                   *parent;
 518   GMainLoop                   *loop;
 519 } PrintResponseData;
 520
 521 static void
 522 print_response_data_free (gpointer data)
 523 {
 524   PrintResponseData *rdata = data;
 525
 526   g_object_unref (rdata->op);
 527   g_free (rdata);
 528 }
 529
 530 static void
 531 finish_print (PrintResponseData *rdata,
 532               GtkPrinter        *printer,
 533               GtkPageSetup      *page_setup,
 534               GtkPrintSettings  *settings,
 535               gboolean           page_setup_set)
 536 {
 537   GtkPrintOperation *op = rdata->op;
 538   GtkPrintOperationPrivate *priv = op->priv;
 539   GtkPrintJob *job;
 540   gdouble top, bottom, left, right;
 541
 542   if (rdata->do_print)
 543     {
 544       gtk_print_operation_set_print_settings (op, settings);
 545       priv->print_context = _gtk_print_context_new (op);
 546
 547       if (gtk_print_settings_get_number_up (settings) < 2)
 548         {
 549           if (printer && gtk_printer_get_hard_margins (printer, &top, &bottom, &left, &right))
 550             _gtk_print_context_set_hard_margins (priv->print_context, top, bottom, left, right);
 551         }
 552       else
 553         {
 554           /* Pages do not have any unprintable area when printing n-up as each page on the
 555            * sheet has been scaled down and translated to a position within the printable
 556            * area of the sheet.
 557            */
 558           _gtk_print_context_set_hard_margins (priv->print_context, 0, 0, 0, 0);
 559         }
 560
 561       if (page_setup != NULL &&
 562           (gtk_print_operation_get_default_page_setup (op) == NULL ||
 563            page_setup_set))
 564         gtk_print_operation_set_default_page_setup (op, page_setup);
 565
 566       _gtk_print_context_set_page_setup (priv->print_context, page_setup);
 567
 568       if (!rdata->do_preview)
 569         {
 570           GtkPrintOperationUnix *op_unix;
 571           cairo_t *cr;
 572
 573           op_unix = g_new0 (GtkPrintOperationUnix, 1);
 574           priv->platform_data = op_unix;
 575           priv->free_platform_data = (GDestroyNotify) op_unix_free;
 576           op_unix->parent = rdata->parent;
 577
 578           priv->start_page = unix_start_page;
 579           priv->end_page = unix_end_page;
 580           priv->end_run = unix_end_run;
 581
 582           job = gtk_print_job_new (priv->job_name, printer, settings, page_setup);
 583           op_unix->job = job;
 584           gtk_print_job_set_track_print_status (job, priv->track_print_status);
 585
 586           op_unix->surface = gtk_print_job_get_surface (job, &priv->error);
 587           if (op_unix->surface == NULL)
 588             {
 589               rdata->result = GTK_PRINT_OPERATION_RESULT_ERROR;
 590               rdata->do_print = FALSE;
 591               goto out;
 592             }
 593
 594           cr = cairo_create (op_unix->surface);
 595           gtk_print_context_set_cairo_context (priv->print_context, cr, 72, 72);
 596           cairo_destroy (cr);
 597
 598           _gtk_print_operation_set_status (op, gtk_print_job_get_status (job), NULL);
 599
 600           op_unix->job_status_changed_tag =
 601             g_signal_connect (job, "status-changed",
 602                               G_CALLBACK (job_status_changed_cb), op);
 603
 604           priv->print_pages = job->print_pages;
 605           priv->page_ranges = job->page_ranges;
 606           priv->num_page_ranges = job->num_page_ranges;
 607
 608           priv->manual_num_copies = job->num_copies;
 609           priv->manual_collation = job->collate;
 610           priv->manual_reverse = job->reverse;
 611           priv->manual_page_set = job->page_set;
 612           priv->manual_scale = job->scale;
 613           priv->manual_orientation = job->rotate_to_orientation;
 614           priv->manual_number_up = job->number_up;
 615           priv->manual_number_up_layout = job->number_up_layout;
 616         }
 617     }
 618  out:
 619   if (rdata->print_cb)
 620     rdata->print_cb (op, rdata->parent, rdata->do_print, rdata->result);
 621
 622   if (rdata->destroy)
 623     rdata->destroy (rdata);
 624 }
 625
 626 static void
 627 handle_print_response (GtkWidget *dialog,
 628                        gint       response,
 629                        gpointer   data)
 630 {
 631   GtkPrintUnixDialog *pd = GTK_PRINT_UNIX_DIALOG (dialog);
 632   PrintResponseData *rdata = data;
 633   GtkPrintSettings *settings = NULL;
 634   GtkPageSetup *page_setup = NULL;
 635   GtkPrinter *printer = NULL;
 636   gboolean page_setup_set = FALSE;
 637
 638   if (response == GTK_RESPONSE_OK)
 639     {
 640       printer = gtk_print_unix_dialog_get_selected_printer (GTK_PRINT_UNIX_DIALOG (pd));
 641
 642       rdata->result = GTK_PRINT_OPERATION_RESULT_APPLY;
 643       rdata->do_preview = FALSE;
 644       if (printer != NULL)
 645         rdata->do_print = TRUE;
 646     }
 647   else if (response == GTK_RESPONSE_APPLY)
 648     {
 649       /* print preview */
 650       rdata->result = GTK_PRINT_OPERATION_RESULT_APPLY;
 651       rdata->do_preview = TRUE;
 652       rdata->do_print = TRUE;
 653
 654       rdata->op->priv->action = GTK_PRINT_OPERATION_ACTION_PREVIEW;
 655     }
 656
 657   if (rdata->do_print)
 658     {
 659       settings = gtk_print_unix_dialog_get_settings (GTK_PRINT_UNIX_DIALOG (pd));
 660       page_setup = gtk_print_unix_dialog_get_page_setup (GTK_PRINT_UNIX_DIALOG (pd));
 661       page_setup_set = gtk_print_unix_dialog_get_page_setup_set (GTK_PRINT_UNIX_DIALOG (pd));
 662
 663       g_signal_emit_by_name (rdata->op, "custom-widget-apply", rdata->op->priv->custom_widget);
 664     }
 665
 666   finish_print (rdata, printer, page_setup, settings, page_setup_set);
 667
 668   if (settings)
 669     g_object_unref (settings);
 670
 671   gtk_widget_destroy (GTK_WIDGET (pd));
 672
 673 }
 674
 675
 676 static void
 677 found_printer (GtkPrinter        *printer,
 678                PrintResponseData *rdata)
 679 {
 680   GtkPrintOperation *op = rdata->op;
 681   GtkPrintOperationPrivate *priv = op->priv;
 682   GtkPrintSettings *settings = NULL;
 683   GtkPageSetup *page_setup = NULL;
 684
 685   if (rdata->loop)
 686     g_main_loop_quit (rdata->loop);
 687
 688   if (printer != NULL)
 689     {
 690       rdata->result = GTK_PRINT_OPERATION_RESULT_APPLY;
 691
 692       rdata->do_print = TRUE;
 693
 694       if (priv->print_settings)
 695         settings = gtk_print_settings_copy (priv->print_settings);
 696       else
 697         settings = gtk_print_settings_new ();
 698
 699       gtk_print_settings_set_printer (settings,
 700                                       gtk_printer_get_name (printer));
 701
 702       if (priv->default_page_setup)
 703         page_setup = gtk_page_setup_copy (priv->default_page_setup);
 704       else
 705         page_setup = gtk_page_setup_new ();
 706   }
 707
 708   finish_print (rdata, printer, page_setup, settings, FALSE);
 709
 710   if (settings)
 711     g_object_unref (settings);
 712
 713   if (page_setup)
 714     g_object_unref (page_setup);
 715 }
 716
 717 void
 718 _gtk_print_operation_platform_backend_run_dialog_async (GtkPrintOperation          *op,
 719                                                         gboolean                    show_dialog,
 720                                                         GtkWindow                  *parent,
 721                                                         GtkPrintOperationPrintFunc  print_cb)
 722 {
 723   GtkWidget *pd;
 724   PrintResponseData *rdata;
 725   const gchar *printer_name;
 726
 727   rdata = g_new (PrintResponseData, 1);
 728   rdata->op = g_object_ref (op);
 729   rdata->do_print = FALSE;
 730   rdata->do_preview = FALSE;
 731   rdata->result = GTK_PRINT_OPERATION_RESULT_CANCEL;
 732   rdata->print_cb = print_cb;
 733   rdata->parent = parent;
 734   rdata->loop = NULL;
 735   rdata->destroy = print_response_data_free;
 736
 737   if (show_dialog)
 738     {
 739       pd = get_print_dialog (op, parent);
 740       gtk_window_set_modal (GTK_WINDOW (pd), TRUE);
 741
 742       g_signal_connect (pd, "response",
 743                         G_CALLBACK (handle_print_response), rdata);
 744
 745       gtk_window_present (GTK_WINDOW (pd));
 746     }
 747   else
 748     {
 749       printer_name = NULL;
 750       if (op->priv->print_settings)
 751         printer_name = gtk_print_settings_get_printer (op->priv->print_settings);
 752
 753       find_printer (printer_name, (GFunc) found_printer, rdata);
 754     }
 755 }
 756
 757 static cairo_status_t
 758 write_preview (void                *closure,
 759                const unsigned char *data,
 760                unsigned int         length)
 761 {
 762   gint fd = GPOINTER_TO_INT (closure);
 763   gssize written;
 764
 765   while (length > 0)
 766     {
 767       written = write (fd, data, length);
 768
 769       if (written == -1)
 770         {
 771           if (errno == EAGAIN || errno == EINTR)
 772             continue;
 773
 774           return CAIRO_STATUS_WRITE_ERROR;
 775         }
 776
 777       data += written;
 778       length -= written;
 779     }
 780
 781   return CAIRO_STATUS_SUCCESS;
 782 }
 783
 784 static void
 785 close_preview (void *data)
 786 {
 787   gint fd = GPOINTER_TO_INT (data);
 788
 789   close (fd);
 790 }
 791
 792 cairo_surface_t *
 793 _gtk_print_operation_platform_backend_create_preview_surface (GtkPrintOperation *op,
 794                                                               GtkPageSetup      *page_setup,
 795                                                               gdouble           *dpi_x,
 796                                                               gdouble           *dpi_y,
 797                                                               gchar            **target)
 798 {
 799   gchar *filename;
 800   gint fd;
 801   GtkPaperSize *paper_size;
 802   gdouble w, h;
 803   cairo_surface_t *surface;
 804   static cairo_user_data_key_t key;
 805
 806   filename = g_build_filename (g_get_tmp_dir (), "previewXXXXXX.pdf", NULL);
 807   fd = g_mkstemp (filename);
 808
 809   if (fd < 0)
 810     {
 811       g_free (filename);
 812       return NULL;
 813     }
 814
 815   *target = filename;
 816
 817   paper_size = gtk_page_setup_get_paper_size (page_setup);
 818   w = gtk_paper_size_get_width (paper_size, GTK_UNIT_POINTS);
 819   h = gtk_paper_size_get_height (paper_size, GTK_UNIT_POINTS);
 820
 821   *dpi_x = *dpi_y = 72;
 822   surface = cairo_pdf_surface_create_for_stream (write_preview, GINT_TO_POINTER (fd), w, h);
 823
 824   cairo_surface_set_user_data (surface, &key, GINT_TO_POINTER (fd), close_preview);
 825
 826   return surface;
 827 }
 828
 829 void
 830 _gtk_print_operation_platform_backend_preview_start_page (GtkPrintOperation *op,
 831                                                           cairo_surface_t   *surface,
 832                                                           cairo_t           *cr)
 833 {
 834 }
 835
 836 void
 837 _gtk_print_operation_platform_backend_preview_end_page (GtkPrintOperation *op,
 838                                                         cairo_surface_t   *surface,
 839                                                         cairo_t           *cr)
 840 {
 841   cairo_show_page (cr);
 842 }
 843
 844 void
 845 _gtk_print_operation_platform_backend_resize_preview_surface (GtkPrintOperation *op,
 846                                                               GtkPageSetup      *page_setup,
 847                                                               cairo_surface_t   *surface)
 848 {
 849   GtkPaperSize *paper_size;
 850   gdouble w, h;
 851
 852   paper_size = gtk_page_setup_get_paper_size (page_setup);
 853   w = gtk_paper_size_get_width (paper_size, GTK_UNIT_POINTS);
 854   h = gtk_paper_size_get_height (paper_size, GTK_UNIT_POINTS);
 855   cairo_pdf_surface_set_size (surface, w, h);
 856 }
 857
 858
 859 GtkPrintOperationResult
 860 _gtk_print_operation_platform_backend_run_dialog (GtkPrintOperation *op,
 861                                                   gboolean           show_dialog,
 862                                                   GtkWindow         *parent,
 863                                                   gboolean          *do_print)
 864  {
 865   GtkWidget *pd;
 866   PrintResponseData rdata;
 867   gint response;
 868   const gchar *printer_name;
 869
 870   rdata.op = op;
 871   rdata.do_print = FALSE;
 872   rdata.do_preview = FALSE;
 873   rdata.result = GTK_PRINT_OPERATION_RESULT_CANCEL;
 874   rdata.print_cb = NULL;
 875   rdata.destroy = NULL;
 876   rdata.parent = parent;
 877   rdata.loop = NULL;
 878
 879   if (show_dialog)
 880     {
 881       pd = get_print_dialog (op, parent);
 882
 883       response = gtk_dialog_run (GTK_DIALOG (pd));
 884       handle_print_response (pd, response, &rdata);
 885     }
 886   else
 887     {
 888       printer_name = NULL;
 889       if (op->priv->print_settings)
 890         printer_name = gtk_print_settings_get_printer (op->priv->print_settings);
 891
 892       rdata.loop = g_main_loop_new (NULL, FALSE);
 893       find_printer (printer_name,
 894                     (GFunc) found_printer, &rdata);
 895
 896       GDK_THREADS_LEAVE ();
 897       g_main_loop_run (rdata.loop);
 898       GDK_THREADS_ENTER ();
 899
 900       g_main_loop_unref (rdata.loop);
 901       rdata.loop = NULL;
 902     }
 903
 904   *do_print = rdata.do_print;
 905
 906   return rdata.result;
 907 }
 908
 909
 910 typedef struct
 911 {
 912   GtkPageSetup         *page_setup;
 913   GtkPageSetupDoneFunc  done_cb;
 914   gpointer              data;
 915   GDestroyNotify        destroy;
 916 } PageSetupResponseData;
 917
 918 static void
 919 page_setup_data_free (gpointer data)
 920 {
 921   PageSetupResponseData *rdata = data;
 922
 923   if (rdata->page_setup)
 924     g_object_unref (rdata->page_setup);
 925
 926   g_free (rdata);
 927 }
 928
 929 static void
 930 handle_page_setup_response (GtkWidget *dialog,
 931                             gint       response,
 932                             gpointer   data)
 933 {
 934   GtkPageSetupUnixDialog *psd;
 935   PageSetupResponseData *rdata = data;
 936
 937   psd = GTK_PAGE_SETUP_UNIX_DIALOG (dialog);
 938   if (response == GTK_RESPONSE_OK)
 939     rdata->page_setup = gtk_page_setup_unix_dialog_get_page_setup (psd);
 940
 941   gtk_widget_destroy (dialog);
 942
 943   if (rdata->done_cb)
 944     rdata->done_cb (rdata->page_setup, rdata->data);
 945
 946   if (rdata->destroy)
 947     rdata->destroy (rdata);
 948 }
 949
 950 static GtkWidget *
 951 get_page_setup_dialog (GtkWindow        *parent,
 952                        GtkPageSetup     *page_setup,
 953                        GtkPrintSettings *settings)
 954 {
 955   GtkWidget *dialog;
 956
 957   dialog = gtk_page_setup_unix_dialog_new (NULL, parent);
 958   if (page_setup)
 959     gtk_page_setup_unix_dialog_set_page_setup (GTK_PAGE_SETUP_UNIX_DIALOG (dialog),
 960                                                page_setup);
 961   gtk_page_setup_unix_dialog_set_print_settings (GTK_PAGE_SETUP_UNIX_DIALOG (dialog),
 962                                                  settings);
 963
 964   return dialog;
 965 }
 966
 967 /**
 968  * gtk_print_run_page_setup_dialog:
 969  * @parent: (allow-none): transient parent
 970  * @page_setup: (allow-none): an existing #GtkPageSetup
 971  * @settings: a #GtkPrintSettings
 972  *
 973  * Runs a page setup dialog, letting the user modify the values from
 974  * @page_setup. If the user cancels the dialog, the returned #GtkPageSetup
 975  * is identical to the passed in @page_setup, otherwise it contains the
 976  * modifications done in the dialog.
 977  *
 978  * Note that this function may use a recursive mainloop to show the page
 979  * setup dialog. See gtk_print_run_page_setup_dialog_async() if this is
 980  * a problem.
 981  *
 982  * Return value: a new #GtkPageSetup
 983  *
 984  * Since: 2.10
 985  */
 986 GtkPageSetup *
 987 gtk_print_run_page_setup_dialog (GtkWindow        *parent,
 988                                  GtkPageSetup     *page_setup,
 989                                  GtkPrintSettings *settings)
 990 {
 991   GtkWidget *dialog;
 992   gint response;
 993   PageSetupResponseData rdata;
 994
 995   rdata.page_setup = NULL;
 996   rdata.done_cb = NULL;
 997   rdata.data = NULL;
 998   rdata.destroy = NULL;
 999
1000   dialog = get_page_setup_dialog (parent, page_setup, settings);
1001   response = gtk_dialog_run (GTK_DIALOG (dialog));
1002   handle_page_setup_response (dialog, response, &rdata);
1003
1004   if (rdata.page_setup)
1005     return rdata.page_setup;
1006   else if (page_setup)
1007     return gtk_page_setup_copy (page_setup);
1008   else
1009     return gtk_page_setup_new ();
1010 }
1011
1012 /**
1013  * gtk_print_run_page_setup_dialog_async:
1014  * @parent: (allow-none): transient parent, or %NULL
1015  * @page_setup: (allow-none): an existing #GtkPageSetup, or %NULL
1016  * @settings: a #GtkPrintSettings
1017  * @done_cb: a function to call when the user saves the modified page setup
1018  * @data: user data to pass to @done_cb
1019  *
1020  * Runs a page setup dialog, letting the user modify the values from @page_setup.
1021  *
1022  * In contrast to gtk_print_run_page_setup_dialog(), this function  returns after
1023  * showing the page setup dialog on platforms that support this, and calls @done_cb
1024  * from a signal handler for the ::response signal of the dialog.
1025  *
1026  * Since: 2.10
1027  */
1028 void
1029 gtk_print_run_page_setup_dialog_async (GtkWindow            *parent,
1030                                        GtkPageSetup         *page_setup,
1031                                        GtkPrintSettings     *settings,
1032                                        GtkPageSetupDoneFunc  done_cb,
1033                                        gpointer              data)
1034 {
1035   GtkWidget *dialog;
1036   PageSetupResponseData *rdata;
1037
1038   dialog = get_page_setup_dialog (parent, page_setup, settings);
1039   gtk_window_set_modal (GTK_WINDOW (dialog), TRUE);
1040
1041   rdata = g_new (PageSetupResponseData, 1);
1042   rdata->page_setup = NULL;
1043   rdata->done_cb = done_cb;
1044   rdata->data = data;
1045   rdata->destroy = page_setup_data_free;
1046
1047   g_signal_connect (dialog, "response",
1048                     G_CALLBACK (handle_page_setup_response), rdata);
1049
1050   gtk_window_present (GTK_WINDOW (dialog));
1051  }
1052
1053 struct _PrinterFinder
1054 {
1055   gboolean found_printer;
1056   GFunc func;
1057   gpointer data;
1058   gchar *printer_name;
1059   GList *backends;
1060   guint timeout_tag;
1061   GtkPrinter *printer;
1062   GtkPrinter *default_printer;
1063   GtkPrinter *first_printer;
1064 };
1065
1066 static gboolean
1067 find_printer_idle (gpointer data)
1068 {
1069   PrinterFinder *finder = data;
1070   GtkPrinter *printer;
1071
1072   if (finder->printer != NULL)
1073     printer = finder->printer;
1074   else if (finder->default_printer != NULL)
1075     printer = finder->default_printer;
1076   else if (finder->first_printer != NULL)
1077     printer = finder->first_printer;
1078   else
1079     printer = NULL;
1080
1081   finder->func (printer, finder->data);
1082
1083   printer_finder_free (finder);
1084
1085   return FALSE;
1086 }
1087
1088 static void
1089 printer_added_cb (GtkPrintBackend *backend,
1090                   GtkPrinter      *printer,
1091                   PrinterFinder   *finder)
1092 {
1093   if (finder->found_printer)
1094     return;
1095
1096   /* FIXME this skips "Print to PDF" - is this intentional ? */
1097   if (gtk_printer_is_virtual (printer))
1098     return;
1099
1100   if (finder->printer_name != NULL &&
1101       strcmp (gtk_printer_get_name (printer), finder->printer_name) == 0)
1102     {
1103       finder->printer = g_object_ref (printer);
1104       finder->found_printer = TRUE;
1105     }
1106   else if (finder->default_printer == NULL &&
1107            gtk_printer_is_default (printer))
1108     {
1109       finder->default_printer = g_object_ref (printer);
1110       if (finder->printer_name == NULL)
1111         finder->found_printer = TRUE;
1112     }
1113   else
1114     if (finder->first_printer == NULL)
1115       finder->first_printer = g_object_ref (printer);
1116
1117   if (finder->found_printer)
1118     g_idle_add (find_printer_idle, finder);
1119 }
1120
1121 static void
1122 printer_list_done_cb (GtkPrintBackend *backend,
1123                       PrinterFinder   *finder)
1124 {
1125   finder->backends = g_list_remove (finder->backends, backend);
1126
1127   g_signal_handlers_disconnect_by_func (backend, printer_added_cb, finder);
1128   g_signal_handlers_disconnect_by_func (backend, printer_list_done_cb, finder);
1129
1130   gtk_print_backend_destroy (backend);
1131   g_object_unref (backend);
1132
1133   if (finder->backends == NULL && !finder->found_printer)
1134     g_idle_add (find_printer_idle, finder);
1135 }
1136
1137 static void
1138 find_printer_init (PrinterFinder   *finder,
1139                    GtkPrintBackend *backend)
1140 {
1141   GList *list;
1142   GList *node;
1143
1144   list = gtk_print_backend_get_printer_list (backend);
1145
1146   node = list;
1147   while (node != NULL)
1148     {
1149       printer_added_cb (backend, node->data, finder);
1150       node = node->next;
1151
1152       if (finder->found_printer)
1153         break;
1154     }
1155
1156   g_list_free (list);
1157
1158   if (gtk_print_backend_printer_list_is_done (backend))
1159     {
1160       finder->backends = g_list_remove (finder->backends, backend);
1161       gtk_print_backend_destroy (backend);
1162       g_object_unref (backend);
1163     }
1164   else
1165     {
1166       g_signal_connect (backend, "printer-added",
1167                         (GCallback) printer_added_cb,
1168                         finder);
1169       g_signal_connect (backend, "printer-list-done",
1170                         (GCallback) printer_list_done_cb,
1171                         finder);
1172     }
1173
1174 }
1175
1176 static void
1177 printer_finder_free (PrinterFinder *finder)
1178 {
1179   GList *l;
1180
1181   g_free (finder->printer_name);
1182
1183   if (finder->printer)
1184     g_object_unref (finder->printer);
1185
1186   if (finder->default_printer)
1187     g_object_unref (finder->default_printer);
1188
1189   if (finder->first_printer)
1190     g_object_unref (finder->first_printer);
1191
1192   for (l = finder->backends; l != NULL; l = l->next)
1193     {
1194       GtkPrintBackend *backend = l->data;
1195       g_signal_handlers_disconnect_by_func (backend, printer_added_cb, finder);
1196       g_signal_handlers_disconnect_by_func (backend, printer_list_done_cb, finder);
1197       gtk_print_backend_destroy (backend);
1198       g_object_unref (backend);
1199     }
1200
1201   g_list_free (finder->backends);
1202
1203   g_free (finder);
1204 }
1205
1206 static void
1207 find_printer (const gchar *printer,
1208               GFunc        func,
1209               gpointer     data)
1210 {
1211   GList *node, *next;
1212   PrinterFinder *finder;
1213
1214   finder = g_new0 (PrinterFinder, 1);
1215
1216   finder->printer_name = g_strdup (printer);
1217   finder->func = func;
1218   finder->data = data;
1219
1220   finder->backends = NULL;
1221   if (g_module_supported ())
1222     finder->backends = gtk_print_backend_load_modules ();
1223
1224   for (node = finder->backends; !finder->found_printer && node != NULL; node = next)
1225     {
1226       next = node->next;
1227       find_printer_init (finder, GTK_PRINT_BACKEND (node->data));
1228     }
1229
1230   if (finder->backends == NULL && !finder->found_printer)
1231     g_idle_add (find_printer_idle, finder);
1232 }
1233
1234 #define __GTK_PRINT_OPERATION_UNIX_C__
1235 #include "gtkaliasdef.c"