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 "gtkprinter-private.h"
  45 #include "gtkprintjob.h"
  46 #include "gtklabel.h"
  47 #include "gtkintl.h"
  48 #include "gtkalias.h"
  49
  50 typedef struct
  51 {
  52   GtkWindow *parent;        /* just in case we need to throw error dialogs */
  53   GMainLoop *loop;
  54   gboolean data_sent;
  55
  56   /* Real printing (not preview) */
  57   GtkPrintJob *job;         /* the job we are sending to the printer */
  58   cairo_surface_t *surface;
  59   gulong job_status_changed_tag;
  60
  61
  62 } GtkPrintOperationUnix;
  63
  64 typedef struct _PrinterFinder PrinterFinder;
  65
  66 static void printer_finder_free (PrinterFinder *finder);
  67 static void find_printer        (const gchar   *printer,
  68                                  GFunc          func,
  69                                  gpointer       data);
  70
  71 static void
  72 unix_start_page (GtkPrintOperation *op,
  73                  GtkPrintContext   *print_context,
  74                  GtkPageSetup      *page_setup)
  75 {
  76   GtkPrintOperationUnix *op_unix;
  77   GtkPaperSize *paper_size;
  78   cairo_surface_type_t type;
  79   gdouble w, h;
  80
  81   op_unix = op->priv->platform_data;
  82
  83   paper_size = gtk_page_setup_get_paper_size (page_setup);
  84
  85   w = gtk_paper_size_get_width (paper_size, GTK_UNIT_POINTS);
  86   h = gtk_paper_size_get_height (paper_size, GTK_UNIT_POINTS);
  87
  88   type = cairo_surface_get_type (op_unix->surface);
  89
  90   if ((op->priv->manual_number_up < 2) ||
  91       (op->priv->page_position % op->priv->manual_number_up == 0))
  92     {
  93       if (type == CAIRO_SURFACE_TYPE_PS)
  94         {
  95           cairo_ps_surface_set_size (op_unix->surface, w, h);
  96           cairo_ps_surface_dsc_begin_page_setup (op_unix->surface);
  97           switch (gtk_page_setup_get_orientation (page_setup))
  98             {
  99               case GTK_PAGE_ORIENTATION_PORTRAIT:
 100               case GTK_PAGE_ORIENTATION_REVERSE_PORTRAIT:
 101                 cairo_ps_surface_dsc_comment (op_unix->surface, "%%PageOrientation: Portrait");
 102                 break;
 103
 104               case GTK_PAGE_ORIENTATION_LANDSCAPE:
 105               case GTK_PAGE_ORIENTATION_REVERSE_LANDSCAPE:
 106                 cairo_ps_surface_dsc_comment (op_unix->surface, "%%PageOrientation: Landscape");
 107                 break;
 108             }
 109          }
 110       else if (type == CAIRO_SURFACE_TYPE_PDF)
 111         {
 112           cairo_pdf_surface_set_size (op_unix->surface, w, h);
 113         }
 114     }
 115 }
 116
 117 static void
 118 unix_end_page (GtkPrintOperation *op,
 119                GtkPrintContext   *print_context)
 120 {
 121   cairo_t *cr;
 122
 123   cr = gtk_print_context_get_cairo_context (print_context);
 124
 125   if ((op->priv->manual_number_up < 2) ||
 126       ((op->priv->page_position + 1) % op->priv->manual_number_up == 0) ||
 127       (op->priv->page_position == op->priv->nr_of_pages_to_print - 1))
 128     cairo_show_page (cr);
 129 }
 130
 131 static void
 132 op_unix_free (GtkPrintOperationUnix *op_unix)
 133 {
 134   if (op_unix->job)
 135     {
 136       g_signal_handler_disconnect (op_unix->job,
 137                                    op_unix->job_status_changed_tag);
 138       g_object_unref (op_unix->job);
 139     }
 140
 141   g_free (op_unix);
 142 }
 143
 144 static gchar *
 145 shell_command_substitute_file (const gchar *cmd,
 146                                const gchar *pdf_filename,
 147                                const gchar *settings_filename,
 148                                gboolean    *pdf_filename_replaced,
 149                                gboolean    *settings_filename_replaced)
 150 {
 151   const gchar *inptr, *start;
 152   GString *final;
 153
 154   g_return_val_if_fail (cmd != NULL, NULL);
 155   g_return_val_if_fail (pdf_filename != NULL, NULL);
 156   g_return_val_if_fail (settings_filename != NULL, NULL);
 157
 158   final = g_string_new (NULL);
 159
 160   *pdf_filename_replaced = FALSE;
 161   *settings_filename_replaced = FALSE;
 162
 163   start = inptr = cmd;
 164   while ((inptr = strchr (inptr, '%')) != NULL)
 165     {
 166       g_string_append_len (final, start, inptr - start);
 167       inptr++;
 168       switch (*inptr)
 169         {
 170           case 'f':
 171             g_string_append (final, pdf_filename);
 172             *pdf_filename_replaced = TRUE;
 173             break;
 174
 175           case 's':
 176             g_string_append (final, settings_filename);
 177             *settings_filename_replaced = TRUE;
 178             break;
 179
 180           case '%':
 181             g_string_append_c (final, '%');
 182             break;
 183
 184           default:
 185             g_string_append_c (final, '%');
 186             if (*inptr)
 187               g_string_append_c (final, *inptr);
 188             break;
 189         }
 190       if (*inptr)
 191         inptr++;
 192       start = inptr;
 193     }
 194   g_string_append (final, start);
 195
 196   return g_string_free (final, FALSE);
 197 }
 198
 199 void
 200 _gtk_print_operation_platform_backend_launch_preview (GtkPrintOperation *op,
 201                                                       cairo_surface_t   *surface,
 202                                                       GtkWindow         *parent,
 203                                                       const gchar       *filename)
 204 {
 205   gint argc;
 206   gchar **argv;
 207   gchar *cmd;
 208   gchar *preview_cmd;
 209   GtkSettings *settings;
 210   GtkPrintSettings *print_settings = NULL;
 211   GtkPageSetup *page_setup;
 212   GKeyFile *key_file = NULL;
 213   gchar *data = NULL;
 214   gsize data_len;
 215   gchar *settings_filename = NULL;
 216   gchar *quoted_filename;
 217   gchar *quoted_settings_filename;
 218   gboolean filename_used = FALSE;
 219   gboolean settings_used = FALSE;
 220   GdkScreen *screen;
 221   GError *error = NULL;
 222   gint fd;
 223   gboolean retval;
 224
 225   cairo_surface_destroy (surface);
 226
 227   if (parent)
 228     screen = gtk_window_get_screen (parent);
 229   else
 230     screen = gdk_screen_get_default ();
 231
 232   fd = g_file_open_tmp ("settingsXXXXXX.ini", &settings_filename, &error);
 233   if (fd < 0)
 234     goto out;
 235
 236   key_file = g_key_file_new ();
 237
 238   print_settings = gtk_print_settings_copy (gtk_print_operation_get_print_settings (op));
 239
 240   if (print_settings != NULL)
 241     {
 242       gtk_print_settings_set_reverse (print_settings, FALSE);
 243       gtk_print_settings_set_page_set (print_settings, GTK_PAGE_SET_ALL);
 244       gtk_print_settings_set_scale (print_settings, 1.0);
 245       gtk_print_settings_set_number_up (print_settings, 1);
 246       gtk_print_settings_set_number_up_layout (print_settings, GTK_NUMBER_UP_LAYOUT_LEFT_TO_RIGHT_TOP_TO_BOTTOM);
 247
 248       /*  These removals are neccessary because cups-* settings have higher priority
 249        *  than normal settings.
 250        */
 251       gtk_print_settings_unset (print_settings, "cups-reverse");
 252       gtk_print_settings_unset (print_settings, "cups-page-set");
 253       gtk_print_settings_unset (print_settings, "cups-scale");
 254       gtk_print_settings_unset (print_settings, "cups-number-up");
 255       gtk_print_settings_unset (print_settings, "cups-number-up-layout");
 256
 257       gtk_print_settings_to_key_file (print_settings, key_file, NULL);
 258       g_object_unref (print_settings);
 259     }
 260
 261   page_setup = gtk_print_context_get_page_setup (op->priv->print_context);
 262   gtk_page_setup_to_key_file (page_setup, key_file, NULL);
 263
 264   g_key_file_set_string (key_file, "Print Job", "title", op->priv->job_name);
 265
 266   data = g_key_file_to_data (key_file, &data_len, &error);
 267   if (!data)
 268     goto out;
 269
 270   retval = g_file_set_contents (settings_filename, data, data_len, &error);
 271   if (!retval)
 272     goto out;
 273
 274   settings = gtk_settings_get_for_screen (screen);
 275   g_object_get (settings, "gtk-print-preview-command", &preview_cmd, NULL);
 276
 277   quoted_filename = g_shell_quote (filename);
 278   quoted_settings_filename = g_shell_quote (settings_filename);
 279   cmd = shell_command_substitute_file (preview_cmd, quoted_filename, quoted_settings_filename, &filename_used, &settings_used);
 280   g_shell_parse_argv (cmd, &argc, &argv, &error);
 281
 282   g_free (preview_cmd);
 283   g_free (quoted_filename);
 284   g_free (quoted_settings_filename);
 285   g_free (cmd);
 286
 287   if (error != NULL)
 288     goto out;
 289
 290   gdk_spawn_on_screen (screen, NULL, argv, NULL, G_SPAWN_SEARCH_PATH, NULL, NULL, NULL, &error);
 291
 292   g_strfreev (argv);
 293
 294   if (error != NULL)
 295     {
 296       gchar* uri;
 297
 298       g_warning ("%s %s", _("Error launching preview"), error->message);
 299
 300       g_error_free (error);
 301       error = NULL;
 302       uri = g_filename_to_uri (filename, NULL, NULL);
 303       gtk_show_uri (screen, uri, GDK_CURRENT_TIME, &error);
 304       g_free (uri);
 305     }
 306
 307  out:
 308   if (error != NULL)
 309     {
 310       GtkWidget *edialog;
 311       edialog = gtk_message_dialog_new (parent,
 312                                         GTK_DIALOG_DESTROY_WITH_PARENT,
 313                                         GTK_MESSAGE_ERROR,
 314                                         GTK_BUTTONS_CLOSE,
 315                                         _("Error launching preview") /* FIXME better text */);
 316       gtk_message_dialog_format_secondary_text (GTK_MESSAGE_DIALOG (edialog),
 317                                                 "%s", error->message);
 318       g_signal_connect (edialog, "response",
 319                         G_CALLBACK (gtk_widget_destroy), NULL);
 320
 321       gtk_window_present (GTK_WINDOW (edialog));
 322
 323       g_error_free (error);
 324
 325       filename_used = FALSE;
 326       settings_used = FALSE;
 327    }
 328
 329   if (!filename_used)
 330     g_unlink (filename);
 331
 332   if (!settings_used)
 333     g_unlink (settings_filename);
 334
 335   if (fd > 0)
 336     close (fd);
 337
 338   if (key_file)
 339     g_key_file_free (key_file);
 340   g_free (data);
 341   g_free (settings_filename);
 342 }
 343
 344 static void
 345 unix_finish_send  (GtkPrintJob *job,
 346                    gpointer     user_data,
 347                    GError      *error)
 348 {
 349   GtkPrintOperation *op = (GtkPrintOperation *) user_data;
 350   GtkPrintOperationUnix *op_unix = op->priv->platform_data;
 351
 352   if (error != NULL)
 353     {
 354       GtkWidget *edialog;
 355       edialog = gtk_message_dialog_new (op_unix->parent,
 356                                         GTK_DIALOG_DESTROY_WITH_PARENT,
 357                                         GTK_MESSAGE_ERROR,
 358                                         GTK_BUTTONS_CLOSE,
 359                                         _("Error printing") /* FIXME better text */);
 360       gtk_message_dialog_format_secondary_text (GTK_MESSAGE_DIALOG (edialog),
 361                                                 "%s", error->message);
 362       gtk_window_set_modal (GTK_WINDOW (edialog), TRUE);
 363       g_signal_connect (edialog, "response",
 364                         G_CALLBACK (gtk_widget_destroy), NULL);
 365
 366       gtk_window_present (GTK_WINDOW (edialog));
 367     }
 368
 369   op_unix->data_sent = TRUE;
 370
 371   if (op_unix->loop)
 372     g_main_loop_quit (op_unix->loop);
 373
 374   g_object_unref (op);
 375 }
 376
 377 static void
 378 unix_end_run (GtkPrintOperation *op,
 379               gboolean           wait,
 380               gboolean           cancelled)
 381 {
 382   GtkPrintOperationUnix *op_unix = op->priv->platform_data;
 383
 384   cairo_surface_finish (op_unix->surface);
 385
 386   if (cancelled)
 387     return;
 388
 389   if (wait)
 390     op_unix->loop = g_main_loop_new (NULL, FALSE);
 391
 392   /* TODO: Check for error */
 393   if (op_unix->job != NULL)
 394     {
 395       g_object_ref (op);
 396       gtk_print_job_send (op_unix->job,
 397                           unix_finish_send,
 398                           op, NULL);
 399     }
 400
 401   if (wait)
 402     {
 403       g_object_ref (op);
 404       if (!op_unix->data_sent)
 405         {
 406           GDK_THREADS_LEAVE ();
 407           g_main_loop_run (op_unix->loop);
 408           GDK_THREADS_ENTER ();
 409         }
 410       g_main_loop_unref (op_unix->loop);
 411       op_unix->loop = NULL;
 412       g_object_unref (op);
 413     }
 414 }
 415
 416 static void
 417 job_status_changed_cb (GtkPrintJob       *job,
 418                        GtkPrintOperation *op)
 419 {
 420   _gtk_print_operation_set_status (op, gtk_print_job_get_status (job), NULL);
 421 }
 422
 423
 424 static void
 425 print_setup_changed_cb (GtkPrintUnixDialog *print_dialog,
 426                         GParamSpec         *pspec,
 427                         gpointer            user_data)
 428 {
 429   GtkPageSetup             *page_setup;
 430   GtkPrintSettings         *print_settings;
 431   GtkPrintOperation        *op = user_data;
 432   GtkPrintOperationPrivate *priv = op->priv;
 433
 434   page_setup = gtk_print_unix_dialog_get_page_setup (print_dialog);
 435   print_settings = gtk_print_unix_dialog_get_settings (print_dialog);
 436
 437   g_signal_emit_by_name (op,
 438                          "update-custom-widget",
 439                          priv->custom_widget,
 440                          page_setup,
 441                          print_settings);
 442 }
 443
 444 static GtkWidget *
 445 get_print_dialog (GtkPrintOperation *op,
 446                   GtkWindow         *parent)
 447 {
 448   GtkPrintOperationPrivate *priv = op->priv;
 449   GtkWidget *pd, *label;
 450   const gchar *custom_tab_label;
 451
 452   pd = gtk_print_unix_dialog_new (NULL, parent);
 453
 454   gtk_print_unix_dialog_set_manual_capabilities (GTK_PRINT_UNIX_DIALOG (pd),
 455                                                  GTK_PRINT_CAPABILITY_PAGE_SET |
 456                                                  GTK_PRINT_CAPABILITY_COPIES |
 457                                                  GTK_PRINT_CAPABILITY_COLLATE |
 458                                                  GTK_PRINT_CAPABILITY_REVERSE |
 459                                                  GTK_PRINT_CAPABILITY_SCALE |
 460                                                  GTK_PRINT_CAPABILITY_PREVIEW |
 461                                                  GTK_PRINT_CAPABILITY_NUMBER_UP |
 462                                                  GTK_PRINT_CAPABILITY_NUMBER_UP_LAYOUT);
 463
 464   if (priv->print_settings)
 465     gtk_print_unix_dialog_set_settings (GTK_PRINT_UNIX_DIALOG (pd),
 466                                         priv->print_settings);
 467
 468   if (priv->default_page_setup)
 469     gtk_print_unix_dialog_set_page_setup (GTK_PRINT_UNIX_DIALOG (pd),
 470                                           priv->default_page_setup);
 471
 472   gtk_print_unix_dialog_set_embed_page_setup (GTK_PRINT_UNIX_DIALOG (pd),
 473                                               priv->embed_page_setup);
 474
 475   gtk_print_unix_dialog_set_current_page (GTK_PRINT_UNIX_DIALOG (pd),
 476                                           priv->current_page);
 477
 478   gtk_print_unix_dialog_set_support_selection (GTK_PRINT_UNIX_DIALOG (pd),
 479                                                priv->support_selection);
 480
 481   gtk_print_unix_dialog_set_has_selection (GTK_PRINT_UNIX_DIALOG (pd),
 482                                            priv->has_selection);
 483
 484   g_signal_emit_by_name (op, "create-custom-widget",
 485                          &priv->custom_widget);
 486
 487   if (priv->custom_widget)
 488     {
 489       custom_tab_label = priv->custom_tab_label;
 490
 491       if (custom_tab_label == NULL)
 492         {
 493           custom_tab_label = g_get_application_name ();
 494           if (custom_tab_label == NULL)
 495             custom_tab_label = _("Application");
 496         }
 497
 498       label = gtk_label_new (custom_tab_label);
 499
 500       gtk_print_unix_dialog_add_custom_tab (GTK_PRINT_UNIX_DIALOG (pd),
 501                                             priv->custom_widget, label);
 502
 503       g_signal_connect (pd, "notify::selected-printer", (GCallback) print_setup_changed_cb, op);
 504       g_signal_connect (pd, "notify::page-setup", (GCallback) print_setup_changed_cb, op);
 505     }
 506
 507   return pd;
 508 }
 509
 510 typedef struct
 511 {
 512   GtkPrintOperation           *op;
 513   gboolean                     do_print;
 514   gboolean                     do_preview;
 515   GtkPrintOperationResult      result;
 516   GtkPrintOperationPrintFunc   print_cb;
 517   GDestroyNotify               destroy;
 518   GtkWindow                   *parent;
 519   GMainLoop                   *loop;
 520 } PrintResponseData;
 521
 522 static void
 523 print_response_data_free (gpointer data)
 524 {
 525   PrintResponseData *rdata = data;
 526
 527   g_object_unref (rdata->op);
 528   g_free (rdata);
 529 }
 530
 531 static void
 532 finish_print (PrintResponseData *rdata,
 533               GtkPrinter        *printer,
 534               GtkPageSetup      *page_setup,
 535               GtkPrintSettings  *settings,
 536               gboolean           page_setup_set)
 537 {
 538   GtkPrintOperation *op = rdata->op;
 539   GtkPrintOperationPrivate *priv = op->priv;
 540   GtkPrintJob *job;
 541   gdouble top, bottom, left, right;
 542
 543   if (rdata->do_print)
 544     {
 545       gtk_print_operation_set_print_settings (op, settings);
 546       priv->print_context = _gtk_print_context_new (op);
 547
 548       if (gtk_print_settings_get_number_up (settings) < 2)
 549         {
 550           if (printer && gtk_printer_get_hard_margins (printer, &top, &bottom, &left, &right))
 551             _gtk_print_context_set_hard_margins (priv->print_context, top, bottom, left, right);
 552         }
 553       else
 554         {
 555           /* Pages do not have any unprintable area when printing n-up as each page on the
 556            * sheet has been scaled down and translated to a position within the printable
 557            * area of the sheet.
 558            */
 559           _gtk_print_context_set_hard_margins (priv->print_context, 0, 0, 0, 0);
 560         }
 561
 562       if (page_setup != NULL &&
 563           (gtk_print_operation_get_default_page_setup (op) == NULL ||
 564            page_setup_set))
 565         gtk_print_operation_set_default_page_setup (op, page_setup);
 566
 567       _gtk_print_context_set_page_setup (priv->print_context, page_setup);
 568
 569       if (!rdata->do_preview)
 570         {
 571           GtkPrintOperationUnix *op_unix;
 572           cairo_t *cr;
 573
 574           op_unix = g_new0 (GtkPrintOperationUnix, 1);
 575           priv->platform_data = op_unix;
 576           priv->free_platform_data = (GDestroyNotify) op_unix_free;
 577           op_unix->parent = rdata->parent;
 578
 579           priv->start_page = unix_start_page;
 580           priv->end_page = unix_end_page;
 581           priv->end_run = unix_end_run;
 582
 583           job = gtk_print_job_new (priv->job_name, printer, settings, page_setup);
 584           op_unix->job = job;
 585           gtk_print_job_set_track_print_status (job, priv->track_print_status);
 586
 587           op_unix->surface = gtk_print_job_get_surface (job, &priv->error);
 588           if (op_unix->surface == NULL)
 589             {
 590               rdata->result = GTK_PRINT_OPERATION_RESULT_ERROR;
 591               rdata->do_print = FALSE;
 592               goto out;
 593             }
 594
 595           cr = cairo_create (op_unix->surface);
 596           gtk_print_context_set_cairo_context (priv->print_context, cr, 72, 72);
 597           cairo_destroy (cr);
 598
 599           _gtk_print_operation_set_status (op, gtk_print_job_get_status (job), NULL);
 600
 601           op_unix->job_status_changed_tag =
 602             g_signal_connect (job, "status-changed",
 603                               G_CALLBACK (job_status_changed_cb), op);
 604
 605           priv->print_pages = job->print_pages;
 606           priv->page_ranges = job->page_ranges;
 607           priv->num_page_ranges = job->num_page_ranges;
 608
 609           priv->manual_num_copies = job->num_copies;
 610           priv->manual_collation = job->collate;
 611           priv->manual_reverse = job->reverse;
 612           priv->manual_page_set = job->page_set;
 613           priv->manual_scale = job->scale;
 614           priv->manual_orientation = job->rotate_to_orientation;
 615           priv->manual_number_up = job->number_up;
 616           priv->manual_number_up_layout = job->number_up_layout;
 617         }
 618     }
 619  out:
 620   if (rdata->print_cb)
 621     rdata->print_cb (op, rdata->parent, rdata->do_print, rdata->result);
 622
 623   if (rdata->destroy)
 624     rdata->destroy (rdata);
 625 }
 626
 627 static void
 628 handle_print_response (GtkWidget *dialog,
 629                        gint       response,
 630                        gpointer   data)
 631 {
 632   GtkPrintUnixDialog *pd = GTK_PRINT_UNIX_DIALOG (dialog);
 633   PrintResponseData *rdata = data;
 634   GtkPrintSettings *settings = NULL;
 635   GtkPageSetup *page_setup = NULL;
 636   GtkPrinter *printer = NULL;
 637   gboolean page_setup_set = FALSE;
 638
 639   if (response == GTK_RESPONSE_OK)
 640     {
 641       printer = gtk_print_unix_dialog_get_selected_printer (GTK_PRINT_UNIX_DIALOG (pd));
 642
 643       rdata->result = GTK_PRINT_OPERATION_RESULT_APPLY;
 644       rdata->do_preview = FALSE;
 645       if (printer != NULL)
 646         rdata->do_print = TRUE;
 647     }
 648   else if (response == GTK_RESPONSE_APPLY)
 649     {
 650       /* print preview */
 651       rdata->result = GTK_PRINT_OPERATION_RESULT_APPLY;
 652       rdata->do_preview = TRUE;
 653       rdata->do_print = TRUE;
 654
 655       rdata->op->priv->action = GTK_PRINT_OPERATION_ACTION_PREVIEW;
 656     }
 657
 658   if (rdata->do_print)
 659     {
 660       settings = gtk_print_unix_dialog_get_settings (GTK_PRINT_UNIX_DIALOG (pd));
 661       page_setup = gtk_print_unix_dialog_get_page_setup (GTK_PRINT_UNIX_DIALOG (pd));
 662       page_setup_set = gtk_print_unix_dialog_get_page_setup_set (GTK_PRINT_UNIX_DIALOG (pd));
 663
 664       g_signal_emit_by_name (rdata->op, "custom-widget-apply", rdata->op->priv->custom_widget);
 665     }
 666
 667   finish_print (rdata, printer, page_setup, settings, page_setup_set);
 668
 669   if (settings)
 670     g_object_unref (settings);
 671
 672   gtk_widget_destroy (GTK_WIDGET (pd));
 673
 674 }
 675
 676
 677 static void
 678 found_printer (GtkPrinter        *printer,
 679                PrintResponseData *rdata)
 680 {
 681   GtkPrintOperation *op = rdata->op;
 682   GtkPrintOperationPrivate *priv = op->priv;
 683   GtkPrintSettings *settings = NULL;
 684   GtkPageSetup *page_setup = NULL;
 685
 686   if (rdata->loop)
 687     g_main_loop_quit (rdata->loop);
 688
 689   if (printer != NULL)
 690     {
 691       rdata->result = GTK_PRINT_OPERATION_RESULT_APPLY;
 692
 693       rdata->do_print = TRUE;
 694
 695       if (priv->print_settings)
 696         settings = gtk_print_settings_copy (priv->print_settings);
 697       else
 698         settings = gtk_print_settings_new ();
 699
 700       gtk_print_settings_set_printer (settings,
 701                                       gtk_printer_get_name (printer));
 702
 703       if (priv->default_page_setup)
 704         page_setup = gtk_page_setup_copy (priv->default_page_setup);
 705       else
 706         page_setup = gtk_page_setup_new ();
 707   }
 708
 709   finish_print (rdata, printer, page_setup, settings, FALSE);
 710
 711   if (settings)
 712     g_object_unref (settings);
 713
 714   if (page_setup)
 715     g_object_unref (page_setup);
 716 }
 717
 718 void
 719 _gtk_print_operation_platform_backend_run_dialog_async (GtkPrintOperation          *op,
 720                                                         gboolean                    show_dialog,
 721                                                         GtkWindow                  *parent,
 722                                                         GtkPrintOperationPrintFunc  print_cb)
 723 {
 724   GtkWidget *pd;
 725   PrintResponseData *rdata;
 726   const gchar *printer_name;
 727
 728   rdata = g_new (PrintResponseData, 1);
 729   rdata->op = g_object_ref (op);
 730   rdata->do_print = FALSE;
 731   rdata->do_preview = FALSE;
 732   rdata->result = GTK_PRINT_OPERATION_RESULT_CANCEL;
 733   rdata->print_cb = print_cb;
 734   rdata->parent = parent;
 735   rdata->loop = NULL;
 736   rdata->destroy = print_response_data_free;
 737
 738   if (show_dialog)
 739     {
 740       pd = get_print_dialog (op, parent);
 741       gtk_window_set_modal (GTK_WINDOW (pd), TRUE);
 742
 743       g_signal_connect (pd, "response",
 744                         G_CALLBACK (handle_print_response), rdata);
 745
 746       gtk_window_present (GTK_WINDOW (pd));
 747     }
 748   else
 749     {
 750       printer_name = NULL;
 751       if (op->priv->print_settings)
 752         printer_name = gtk_print_settings_get_printer (op->priv->print_settings);
 753
 754       find_printer (printer_name, (GFunc) found_printer, rdata);
 755     }
 756 }
 757
 758 static cairo_status_t
 759 write_preview (void                *closure,
 760                const unsigned char *data,
 761                unsigned int         length)
 762 {
 763   gint fd = GPOINTER_TO_INT (closure);
 764   gssize written;
 765
 766   while (length > 0)
 767     {
 768       written = write (fd, data, length);
 769
 770       if (written == -1)
 771         {
 772           if (errno == EAGAIN || errno == EINTR)
 773             continue;
 774
 775           return CAIRO_STATUS_WRITE_ERROR;
 776         }
 777
 778       data += written;
 779       length -= written;
 780     }
 781
 782   return CAIRO_STATUS_SUCCESS;
 783 }
 784
 785 static void
 786 close_preview (void *data)
 787 {
 788   gint fd = GPOINTER_TO_INT (data);
 789
 790   close (fd);
 791 }
 792
 793 cairo_surface_t *
 794 _gtk_print_operation_platform_backend_create_preview_surface (GtkPrintOperation *op,
 795                                                               GtkPageSetup      *page_setup,
 796                                                               gdouble           *dpi_x,
 797                                                               gdouble           *dpi_y,
 798                                                               gchar            **target)
 799 {
 800   gchar *filename;
 801   gint fd;
 802   GtkPaperSize *paper_size;
 803   gdouble w, h;
 804   cairo_surface_t *surface;
 805   static cairo_user_data_key_t key;
 806
 807   filename = g_build_filename (g_get_tmp_dir (), "previewXXXXXX.pdf", NULL);
 808   fd = g_mkstemp (filename);
 809
 810   if (fd < 0)
 811     {
 812       g_free (filename);
 813       return NULL;
 814     }
 815
 816   *target = filename;
 817
 818   paper_size = gtk_page_setup_get_paper_size (page_setup);
 819   w = gtk_paper_size_get_width (paper_size, GTK_UNIT_POINTS);
 820   h = gtk_paper_size_get_height (paper_size, GTK_UNIT_POINTS);
 821
 822   *dpi_x = *dpi_y = 72;
 823   surface = cairo_pdf_surface_create_for_stream (write_preview, GINT_TO_POINTER (fd), w, h);
 824
 825   cairo_surface_set_user_data (surface, &key, GINT_TO_POINTER (fd), close_preview);
 826
 827   return surface;
 828 }
 829
 830 void
 831 _gtk_print_operation_platform_backend_preview_start_page (GtkPrintOperation *op,
 832                                                           cairo_surface_t   *surface,
 833                                                           cairo_t           *cr)
 834 {
 835 }
 836
 837 void
 838 _gtk_print_operation_platform_backend_preview_end_page (GtkPrintOperation *op,
 839                                                         cairo_surface_t   *surface,
 840                                                         cairo_t           *cr)
 841 {
 842   cairo_show_page (cr);
 843 }
 844
 845 void
 846 _gtk_print_operation_platform_backend_resize_preview_surface (GtkPrintOperation *op,
 847                                                               GtkPageSetup      *page_setup,
 848                                                               cairo_surface_t   *surface)
 849 {
 850   GtkPaperSize *paper_size;
 851   gdouble w, h;
 852
 853   paper_size = gtk_page_setup_get_paper_size (page_setup);
 854   w = gtk_paper_size_get_width (paper_size, GTK_UNIT_POINTS);
 855   h = gtk_paper_size_get_height (paper_size, GTK_UNIT_POINTS);
 856   cairo_pdf_surface_set_size (surface, w, h);
 857 }
 858
 859
 860 GtkPrintOperationResult
 861 _gtk_print_operation_platform_backend_run_dialog (GtkPrintOperation *op,
 862                                                   gboolean           show_dialog,
 863                                                   GtkWindow         *parent,
 864                                                   gboolean          *do_print)
 865  {
 866   GtkWidget *pd;
 867   PrintResponseData rdata;
 868   gint response;
 869   const gchar *printer_name;
 870
 871   rdata.op = op;
 872   rdata.do_print = FALSE;
 873   rdata.do_preview = FALSE;
 874   rdata.result = GTK_PRINT_OPERATION_RESULT_CANCEL;
 875   rdata.print_cb = NULL;
 876   rdata.destroy = NULL;
 877   rdata.parent = parent;
 878   rdata.loop = NULL;
 879
 880   if (show_dialog)
 881     {
 882       pd = get_print_dialog (op, parent);
 883
 884       response = gtk_dialog_run (GTK_DIALOG (pd));
 885       handle_print_response (pd, response, &rdata);
 886     }
 887   else
 888     {
 889       printer_name = NULL;
 890       if (op->priv->print_settings)
 891         printer_name = gtk_print_settings_get_printer (op->priv->print_settings);
 892
 893       rdata.loop = g_main_loop_new (NULL, FALSE);
 894       find_printer (printer_name,
 895                     (GFunc) found_printer, &rdata);
 896
 897       GDK_THREADS_LEAVE ();
 898       g_main_loop_run (rdata.loop);
 899       GDK_THREADS_ENTER ();
 900
 901       g_main_loop_unref (rdata.loop);
 902       rdata.loop = NULL;
 903     }
 904
 905   *do_print = rdata.do_print;
 906
 907   return rdata.result;
 908 }
 909
 910
 911 typedef struct
 912 {
 913   GtkPageSetup         *page_setup;
 914   GtkPageSetupDoneFunc  done_cb;
 915   gpointer              data;
 916   GDestroyNotify        destroy;
 917 } PageSetupResponseData;
 918
 919 static void
 920 page_setup_data_free (gpointer data)
 921 {
 922   PageSetupResponseData *rdata = data;
 923
 924   if (rdata->page_setup)
 925     g_object_unref (rdata->page_setup);
 926
 927   g_free (rdata);
 928 }
 929
 930 static void
 931 handle_page_setup_response (GtkWidget *dialog,
 932                             gint       response,
 933                             gpointer   data)
 934 {
 935   GtkPageSetupUnixDialog *psd;
 936   PageSetupResponseData *rdata = data;
 937
 938   psd = GTK_PAGE_SETUP_UNIX_DIALOG (dialog);
 939   if (response == GTK_RESPONSE_OK)
 940     rdata->page_setup = gtk_page_setup_unix_dialog_get_page_setup (psd);
 941
 942   gtk_widget_destroy (dialog);
 943
 944   if (rdata->done_cb)
 945     rdata->done_cb (rdata->page_setup, rdata->data);
 946
 947   if (rdata->destroy)
 948     rdata->destroy (rdata);
 949 }
 950
 951 static GtkWidget *
 952 get_page_setup_dialog (GtkWindow        *parent,
 953                        GtkPageSetup     *page_setup,
 954                        GtkPrintSettings *settings)
 955 {
 956   GtkWidget *dialog;
 957
 958   dialog = gtk_page_setup_unix_dialog_new (NULL, parent);
 959   if (page_setup)
 960     gtk_page_setup_unix_dialog_set_page_setup (GTK_PAGE_SETUP_UNIX_DIALOG (dialog),
 961                                                page_setup);
 962   gtk_page_setup_unix_dialog_set_print_settings (GTK_PAGE_SETUP_UNIX_DIALOG (dialog),
 963                                                  settings);
 964
 965   return dialog;
 966 }
 967
 968 /**
 969  * gtk_print_run_page_setup_dialog:
 970  * @parent: (allow-none): transient parent
 971  * @page_setup: (allow-none): an existing #GtkPageSetup
 972  * @settings: a #GtkPrintSettings
 973  *
 974  * Runs a page setup dialog, letting the user modify the values from
 975  * @page_setup. If the user cancels the dialog, the returned #GtkPageSetup
 976  * is identical to the passed in @page_setup, otherwise it contains the
 977  * modifications done in the dialog.
 978  *
 979  * Note that this function may use a recursive mainloop to show the page
 980  * setup dialog. See gtk_print_run_page_setup_dialog_async() if this is
 981  * a problem.
 982  *
 983  * Return value: a new #GtkPageSetup
 984  *
 985  * Since: 2.10
 986  */
 987 GtkPageSetup *
 988 gtk_print_run_page_setup_dialog (GtkWindow        *parent,
 989                                  GtkPageSetup     *page_setup,
 990                                  GtkPrintSettings *settings)
 991 {
 992   GtkWidget *dialog;
 993   gint response;
 994   PageSetupResponseData rdata;
 995
 996   rdata.page_setup = NULL;
 997   rdata.done_cb = NULL;
 998   rdata.data = NULL;
 999   rdata.destroy = NULL;
1000
1001   dialog = get_page_setup_dialog (parent, page_setup, settings);
1002   response = gtk_dialog_run (GTK_DIALOG (dialog));
1003   handle_page_setup_response (dialog, response, &rdata);
1004
1005   if (rdata.page_setup)
1006     return rdata.page_setup;
1007   else if (page_setup)
1008     return gtk_page_setup_copy (page_setup);
1009   else
1010     return gtk_page_setup_new ();
1011 }
1012
1013 /**
1014  * gtk_print_run_page_setup_dialog_async:
1015  * @parent: transient parent, or %NULL
1016  * @page_setup: an existing #GtkPageSetup, or %NULL
1017  * @settings: a #GtkPrintSettings
1018  * @done_cb: a function to call when the user saves the modified page setup
1019  * @data: user data to pass to @done_cb
1020  *
1021  * Runs a page setup dialog, letting the user modify the values from @page_setup.
1022  *
1023  * In contrast to gtk_print_run_page_setup_dialog(), this function  returns after
1024  * showing the page setup dialog on platforms that support this, and calls @done_cb
1025  * from a signal handler for the ::response signal of the dialog.
1026  *
1027  * Since: 2.10
1028  */
1029 void
1030 gtk_print_run_page_setup_dialog_async (GtkWindow            *parent,
1031                                        GtkPageSetup         *page_setup,
1032                                        GtkPrintSettings     *settings,
1033                                        GtkPageSetupDoneFunc  done_cb,
1034                                        gpointer              data)
1035 {
1036   GtkWidget *dialog;
1037   PageSetupResponseData *rdata;
1038
1039   dialog = get_page_setup_dialog (parent, page_setup, settings);
1040   gtk_window_set_modal (GTK_WINDOW (dialog), TRUE);
1041
1042   rdata = g_new (PageSetupResponseData, 1);
1043   rdata->page_setup = NULL;
1044   rdata->done_cb = done_cb;
1045   rdata->data = data;
1046   rdata->destroy = page_setup_data_free;
1047
1048   g_signal_connect (dialog, "response",
1049                     G_CALLBACK (handle_page_setup_response), rdata);
1050
1051   gtk_window_present (GTK_WINDOW (dialog));
1052  }
1053
1054 struct _PrinterFinder
1055 {
1056   gboolean found_printer;
1057   GFunc func;
1058   gpointer data;
1059   gchar *printer_name;
1060   GList *backends;
1061   guint timeout_tag;
1062   GtkPrinter *printer;
1063   GtkPrinter *default_printer;
1064   GtkPrinter *first_printer;
1065 };
1066
1067 static gboolean
1068 find_printer_idle (gpointer data)
1069 {
1070   PrinterFinder *finder = data;
1071   GtkPrinter *printer;
1072
1073   if (finder->printer != NULL)
1074     printer = finder->printer;
1075   else if (finder->default_printer != NULL)
1076     printer = finder->default_printer;
1077   else if (finder->first_printer != NULL)
1078     printer = finder->first_printer;
1079   else
1080     printer = NULL;
1081
1082   finder->func (printer, finder->data);
1083
1084   printer_finder_free (finder);
1085
1086   return FALSE;
1087 }
1088
1089 static void
1090 printer_added_cb (GtkPrintBackend *backend,
1091                   GtkPrinter      *printer,
1092                   PrinterFinder   *finder)
1093 {
1094   if (finder->found_printer)
1095     return;
1096
1097   /* FIXME this skips "Print to PDF" - is this intentional ? */
1098   if (gtk_printer_is_virtual (printer))
1099     return;
1100
1101   if (finder->printer_name != NULL &&
1102       strcmp (gtk_printer_get_name (printer), finder->printer_name) == 0)
1103     {
1104       finder->printer = g_object_ref (printer);
1105       finder->found_printer = TRUE;
1106     }
1107   else if (finder->default_printer == NULL &&
1108            gtk_printer_is_default (printer))
1109     {
1110       finder->default_printer = g_object_ref (printer);
1111       if (finder->printer_name == NULL)
1112         finder->found_printer = TRUE;
1113     }
1114   else
1115     if (finder->first_printer == NULL)
1116       finder->first_printer = g_object_ref (printer);
1117
1118   if (finder->found_printer)
1119     g_idle_add (find_printer_idle, finder);
1120 }
1121
1122 static void
1123 printer_list_done_cb (GtkPrintBackend *backend,
1124                       PrinterFinder   *finder)
1125 {
1126   finder->backends = g_list_remove (finder->backends, backend);
1127
1128   g_signal_handlers_disconnect_by_func (backend, printer_added_cb, finder);
1129   g_signal_handlers_disconnect_by_func (backend, printer_list_done_cb, finder);
1130
1131   gtk_print_backend_destroy (backend);
1132   g_object_unref (backend);
1133
1134   if (finder->backends == NULL && !finder->found_printer)
1135     g_idle_add (find_printer_idle, finder);
1136 }
1137
1138 static void
1139 find_printer_init (PrinterFinder   *finder,
1140                    GtkPrintBackend *backend)
1141 {
1142   GList *list;
1143   GList *node;
1144
1145   list = gtk_print_backend_get_printer_list (backend);
1146
1147   node = list;
1148   while (node != NULL)
1149     {
1150       printer_added_cb (backend, node->data, finder);
1151       node = node->next;
1152
1153       if (finder->found_printer)
1154         break;
1155     }
1156
1157   g_list_free (list);
1158
1159   if (gtk_print_backend_printer_list_is_done (backend))
1160     {
1161       finder->backends = g_list_remove (finder->backends, backend);
1162       gtk_print_backend_destroy (backend);
1163       g_object_unref (backend);
1164     }
1165   else
1166     {
1167       g_signal_connect (backend, "printer-added",
1168                         (GCallback) printer_added_cb,
1169                         finder);
1170       g_signal_connect (backend, "printer-list-done",
1171                         (GCallback) printer_list_done_cb,
1172                         finder);
1173     }
1174
1175 }
1176
1177 static void
1178 printer_finder_free (PrinterFinder *finder)
1179 {
1180   GList *l;
1181
1182   g_free (finder->printer_name);
1183
1184   if (finder->printer)
1185     g_object_unref (finder->printer);
1186
1187   if (finder->default_printer)
1188     g_object_unref (finder->default_printer);
1189
1190   if (finder->first_printer)
1191     g_object_unref (finder->first_printer);
1192
1193   for (l = finder->backends; l != NULL; l = l->next)
1194     {
1195       GtkPrintBackend *backend = l->data;
1196       g_signal_handlers_disconnect_by_func (backend, printer_added_cb, finder);
1197       g_signal_handlers_disconnect_by_func (backend, printer_list_done_cb, finder);
1198       gtk_print_backend_destroy (backend);
1199       g_object_unref (backend);
1200     }
1201
1202   g_list_free (finder->backends);
1203
1204   g_free (finder);
1205 }
1206
1207 static void
1208 find_printer (const gchar *printer,
1209               GFunc        func,
1210               gpointer     data)
1211 {
1212   GList *node, *next;
1213   PrinterFinder *finder;
1214
1215   finder = g_new0 (PrinterFinder, 1);
1216
1217   finder->printer_name = g_strdup (printer);
1218   finder->func = func;
1219   finder->data = data;
1220
1221   finder->backends = NULL;
1222   if (g_module_supported ())
1223     finder->backends = gtk_print_backend_load_modules ();
1224
1225   for (node = finder->backends; !finder->found_printer && node != NULL; node = next)
1226     {
1227       next = node->next;
1228       find_printer_init (finder, GTK_PRINT_BACKEND (node->data));
1229     }
1230
1231   if (finder->backends == NULL && !finder->found_printer)
1232     g_idle_add (find_printer_idle, finder);
1233 }
1234
1235 #define __GTK_PRINT_OPERATION_UNIX_C__
1236 #include "gtkaliasdef.c"