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 "gtkprintoperation-private.h"
  34 #include "gtkmarshal.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 "gtkalias.h"
  48 #include "gtkintl.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 (type == CAIRO_SURFACE_TYPE_PS)
  91     cairo_ps_surface_set_size (op_unix->surface, w, h);
  92   else if (type == CAIRO_SURFACE_TYPE_PDF)
  93     cairo_pdf_surface_set_size (op_unix->surface, w, h);
  94 }
  95
  96 static void
  97 unix_end_page (GtkPrintOperation *op,
  98                GtkPrintContext   *print_context)
  99 {
 100   cairo_t *cr;
 101
 102   cr = gtk_print_context_get_cairo_context (print_context);
 103   cairo_show_page (cr);
 104 }
 105
 106 static void
 107 op_unix_free (GtkPrintOperationUnix *op_unix)
 108 {
 109   if (op_unix->job)
 110     {
 111       g_signal_handler_disconnect (op_unix->job,
 112                                    op_unix->job_status_changed_tag);
 113       g_object_unref (op_unix->job);
 114     }
 115
 116   g_free (op_unix);
 117 }
 118
 119 static gchar *
 120 shell_command_substitute_file (const gchar *cmd,
 121                                const gchar *filename)
 122 {
 123   const gchar *inptr, *start;
 124   gchar *result;
 125   GString *final;
 126
 127   g_return_val_if_fail (cmd != NULL, NULL);
 128   g_return_val_if_fail (filename != NULL, NULL);
 129
 130   result = NULL;
 131   final = g_string_new (NULL);
 132
 133   start = inptr = cmd;
 134
 135   while ((inptr = strchr (inptr, '%')) != NULL)
 136     {
 137       g_string_append_len (final, start, inptr - start);
 138       inptr++;
 139       switch (*inptr)
 140         {
 141           case 'f':
 142             g_string_append (final, filename ? filename : "");
 143             break;
 144
 145           case '%':
 146             g_string_append_c (final, '%');
 147             break;
 148
 149           default:
 150             g_string_append_c (final, '%');
 151             if (*inptr)
 152               g_string_append_c (final, *inptr);
 153             break;
 154         }
 155       if (*inptr)
 156         inptr++;
 157       start = inptr;
 158     }
 159   g_string_append (final, start);
 160
 161   result = final->str;
 162
 163   g_string_free (final, FALSE);
 164
 165   return result;
 166 }
 167
 168 static void
 169 gtk_print_operation_unix_initialize (void)
 170 {
 171   static gboolean initialized = FALSE;
 172
 173   if (!initialized)
 174     {
 175       /**
 176        * GtkSettings::gtk-print-preview-command:
 177        *
 178        * A command to run for displaying the print preview. The command
 179        * should contain a %f placeholder, which will get replaced by
 180        * the path to the pdf file.
 181        *
 182        * The preview application is responsible for removing the pdf file
 183        * when it is done.
 184        *
 185        * Since: 2.10
 186        */
 187       gtk_settings_install_property (g_param_spec_string ("gtk-print-preview-command",
 188                                                           P_("Default command to run when displaying a print preview"),
 189                                                           P_("Command to run when displaying a print preview"),
 190                                                           GTK_PRINT_PREVIEW_COMMAND,
 191                                                           GTK_PARAM_READWRITE));
 192       initialized = TRUE;
 193     }
 194 }
 195
 196 void
 197 _gtk_print_operation_platform_backend_launch_preview (GtkPrintOperation *op,
 198                                                       cairo_surface_t   *surface,
 199                                                       GtkWindow         *parent,
 200                                                       const gchar       *filename)
 201 {
 202   gint argc;
 203   gchar **argv;
 204   gchar *cmd;
 205   gchar *preview_cmd;
 206   GtkSettings *settings;
 207   gchar *quoted_filename;
 208   GdkScreen *screen;
 209   GError *error = NULL;
 210
 211   gtk_print_operation_unix_initialize ();
 212
 213   cairo_surface_destroy (surface);
 214
 215   settings = gtk_settings_get_default ();
 216   g_object_get (settings, "gtk-print-preview-command", &preview_cmd, NULL);
 217
 218   quoted_filename = g_shell_quote (filename);
 219   cmd = shell_command_substitute_file (preview_cmd, quoted_filename);
 220   g_shell_parse_argv (cmd, &argc, &argv, &error);
 221
 222   if (error != NULL)
 223     goto out;
 224
 225   if (parent)
 226     screen = gtk_window_get_screen (parent);
 227   else
 228     screen = gdk_screen_get_default ();
 229
 230   gdk_spawn_on_screen (screen, NULL, argv, NULL, G_SPAWN_SEARCH_PATH, NULL, NULL, NULL, &error);
 231
 232  out:
 233   if (error != NULL)
 234     {
 235       GtkWidget *edialog;
 236       edialog = gtk_message_dialog_new (parent,
 237                                         GTK_DIALOG_DESTROY_WITH_PARENT,
 238                                         GTK_MESSAGE_ERROR,
 239                                         GTK_BUTTONS_CLOSE,
 240                                         _("Error launching preview") /* FIXME better text */);
 241       gtk_message_dialog_format_secondary_text (GTK_MESSAGE_DIALOG (edialog),
 242                                                 "%s", error->message);
 243       gtk_window_set_modal (GTK_WINDOW (edialog), TRUE);
 244       g_signal_connect (edialog, "response",
 245                         G_CALLBACK (gtk_widget_destroy), NULL);
 246
 247       gtk_window_present (GTK_WINDOW (edialog));
 248
 249       g_error_free (error);
 250    }
 251
 252   g_free (cmd);
 253   g_free (quoted_filename);
 254   g_free (preview_cmd);
 255   g_strfreev (argv);
 256 }
 257
 258 static void
 259 unix_finish_send  (GtkPrintJob *job,
 260                    gpointer     user_data,
 261                    GError      *error)
 262 {
 263   GtkPrintOperationUnix *op_unix;
 264
 265   op_unix = (GtkPrintOperationUnix *) user_data;
 266
 267   if (error != NULL)
 268     {
 269       GtkWidget *edialog;
 270       edialog = gtk_message_dialog_new (op_unix->parent,
 271                                         GTK_DIALOG_DESTROY_WITH_PARENT,
 272                                         GTK_MESSAGE_ERROR,
 273                                         GTK_BUTTONS_CLOSE,
 274                                         _("Error printing") /* FIXME better text */);
 275       gtk_message_dialog_format_secondary_text (GTK_MESSAGE_DIALOG (edialog),
 276                                                 "%s", error->message);
 277       gtk_window_set_modal (GTK_WINDOW (edialog), TRUE);
 278       g_signal_connect (edialog, "response",
 279                         G_CALLBACK (gtk_widget_destroy), NULL);
 280
 281       gtk_window_present (GTK_WINDOW (edialog));
 282     }
 283
 284   op_unix->data_sent = TRUE;
 285
 286   if (op_unix->loop)
 287     g_main_loop_quit (op_unix->loop);
 288 }
 289
 290 static void
 291 unix_end_run (GtkPrintOperation *op,
 292               gboolean           wait,
 293               gboolean           cancelled)
 294 {
 295   GtkPrintOperationUnix *op_unix = op->priv->platform_data;
 296
 297   cairo_surface_finish (op_unix->surface);
 298
 299   if (cancelled)
 300     return;
 301
 302   if (wait)
 303     op_unix->loop = g_main_loop_new (NULL, FALSE);
 304
 305   /* TODO: Check for error */
 306   if (op_unix->job != NULL)
 307     gtk_print_job_send (op_unix->job,
 308                         unix_finish_send,
 309                         op_unix, NULL,
 310                         NULL);
 311
 312   if (wait)
 313     {
 314       if (!op_unix->data_sent)
 315         {
 316           GDK_THREADS_LEAVE ();
 317           g_main_loop_run (op_unix->loop);
 318           GDK_THREADS_ENTER ();
 319         }
 320       g_main_loop_unref (op_unix->loop);
 321     }
 322 }
 323
 324 static void
 325 job_status_changed_cb (GtkPrintJob       *job,
 326                        GtkPrintOperation *op)
 327 {
 328   _gtk_print_operation_set_status (op, gtk_print_job_get_status (job), NULL);
 329 }
 330
 331
 332 static GtkWidget *
 333 get_print_dialog (GtkPrintOperation *op,
 334                   GtkWindow         *parent)
 335 {
 336   GtkPrintOperationPrivate *priv = op->priv;
 337   GtkWidget *pd, *label;
 338   GtkPageSetup *page_setup;
 339   const gchar *custom_tab_label;
 340
 341   pd = gtk_print_unix_dialog_new (NULL, parent);
 342
 343   gtk_print_unix_dialog_set_manual_capabilities (GTK_PRINT_UNIX_DIALOG (pd),
 344                                                  GTK_PRINT_CAPABILITY_PAGE_SET |
 345                                                  GTK_PRINT_CAPABILITY_COPIES |
 346                                                  GTK_PRINT_CAPABILITY_COLLATE |
 347                                                  GTK_PRINT_CAPABILITY_REVERSE |
 348                                                  GTK_PRINT_CAPABILITY_SCALE |
 349                                                  GTK_PRINT_CAPABILITY_GENERATE_PDF);
 350
 351   if (priv->print_settings)
 352     gtk_print_unix_dialog_set_settings (GTK_PRINT_UNIX_DIALOG (pd),
 353                                         priv->print_settings);
 354   if (priv->default_page_setup)
 355     page_setup = gtk_page_setup_copy (priv->default_page_setup);
 356   else
 357     page_setup = gtk_page_setup_new ();
 358
 359   gtk_print_unix_dialog_set_page_setup (GTK_PRINT_UNIX_DIALOG (pd),
 360                                         page_setup);
 361   g_object_unref (page_setup);
 362
 363   g_signal_emit_by_name (op, "create-custom-widget",
 364                          &priv->custom_widget);
 365
 366   if (priv->custom_widget)
 367     {
 368       custom_tab_label = priv->custom_tab_label;
 369
 370       if (custom_tab_label == NULL)
 371         {
 372           custom_tab_label = g_get_application_name ();
 373           if (custom_tab_label == NULL)
 374             custom_tab_label = _("Application");
 375         }
 376
 377       label = gtk_label_new (custom_tab_label);
 378
 379       gtk_print_unix_dialog_add_custom_tab (GTK_PRINT_UNIX_DIALOG (pd),
 380                                             priv->custom_widget, label);
 381     }
 382
 383   return pd;
 384 }
 385
 386 typedef struct
 387 {
 388   GtkPrintOperation           *op;
 389   gboolean                     do_print;
 390   gboolean                     do_preview;
 391   GtkPrintOperationResult      result;
 392   GtkPrintOperationPrintFunc   print_cb;
 393   GDestroyNotify               destroy;
 394   GtkWindow                   *parent;
 395   GMainLoop                   *loop;
 396 } PrintResponseData;
 397
 398 static void
 399 print_response_data_free (gpointer data)
 400 {
 401   PrintResponseData *rdata = data;
 402
 403   g_object_unref (rdata->op);
 404   g_free (rdata);
 405 }
 406
 407 static void
 408 finish_print (PrintResponseData *rdata,
 409               GtkPrinter        *printer,
 410               GtkPageSetup      *page_setup,
 411               GtkPrintSettings  *settings)
 412 {
 413   GtkPrintOperation *op = rdata->op;
 414   GtkPrintOperationPrivate *priv = op->priv;
 415   GtkPrintJob *job;
 416
 417   if (rdata->do_print)
 418     {
 419       gtk_print_operation_set_print_settings (op, settings);
 420       priv->print_context = _gtk_print_context_new (op);
 421       _gtk_print_context_set_page_setup (priv->print_context, page_setup);
 422
 423       if (!rdata->do_preview)
 424         {
 425           GtkPrintOperationUnix *op_unix;
 426           cairo_t *cr;
 427
 428           op_unix = g_new0 (GtkPrintOperationUnix, 1);
 429           priv->platform_data = op_unix;
 430           priv->free_platform_data = (GDestroyNotify) op_unix_free;
 431           op_unix->parent = rdata->parent;
 432
 433           priv->start_page = unix_start_page;
 434           priv->end_page = unix_end_page;
 435           priv->end_run = unix_end_run;
 436
 437           job = gtk_print_job_new (priv->job_name, printer, settings, page_setup);
 438           op_unix->job = job;
 439           gtk_print_job_set_track_print_status (job, priv->track_print_status);
 440
 441           op_unix->surface = gtk_print_job_get_surface (job, &priv->error);
 442           if (op_unix->surface == NULL)
 443             {
 444               rdata->result = GTK_PRINT_OPERATION_RESULT_ERROR;
 445               rdata->do_print = FALSE;
 446               goto out;
 447             }
 448
 449           cr = cairo_create (op_unix->surface);
 450           gtk_print_context_set_cairo_context (priv->print_context, cr, 72, 72);
 451           cairo_destroy (cr);
 452
 453           _gtk_print_operation_set_status (op, gtk_print_job_get_status (job), NULL);
 454
 455           op_unix->job_status_changed_tag =
 456             g_signal_connect (job, "status-changed",
 457                               G_CALLBACK (job_status_changed_cb), op);
 458
 459           priv->print_pages = job->print_pages;
 460           priv->page_ranges = job->page_ranges;
 461           priv->num_page_ranges = job->num_page_ranges;
 462
 463           priv->manual_num_copies = job->num_copies;
 464           priv->manual_collation = job->collate;
 465           priv->manual_reverse = job->reverse;
 466           priv->manual_page_set = job->page_set;
 467           priv->manual_scale = job->scale;
 468           priv->manual_orientation = job->rotate_to_orientation;
 469         }
 470     }
 471  out:
 472   if (rdata->print_cb)
 473     rdata->print_cb (op, rdata->parent, rdata->do_print, rdata->result);
 474
 475   if (rdata->destroy)
 476     rdata->destroy (rdata);
 477 }
 478
 479 static void
 480 handle_print_response (GtkWidget *dialog,
 481                        gint       response,
 482                        gpointer   data)
 483 {
 484   GtkPrintUnixDialog *pd = GTK_PRINT_UNIX_DIALOG (dialog);
 485   PrintResponseData *rdata = data;
 486   GtkPrintSettings *settings = NULL;
 487   GtkPageSetup *page_setup = NULL;
 488   GtkPrinter *printer = NULL;
 489
 490   if (response == GTK_RESPONSE_OK)
 491     {
 492       printer = gtk_print_unix_dialog_get_selected_printer (GTK_PRINT_UNIX_DIALOG (pd));
 493
 494       rdata->result = GTK_PRINT_OPERATION_RESULT_APPLY;
 495       rdata->do_preview = FALSE;
 496       if (printer != NULL)
 497         rdata->do_print = TRUE;
 498     }
 499   else if (response == GTK_RESPONSE_APPLY)
 500     {
 501       /* print preview */
 502       rdata->result = GTK_PRINT_OPERATION_RESULT_APPLY;
 503       rdata->do_preview = TRUE;
 504       rdata->do_print = TRUE;
 505
 506       rdata->op->priv->action = GTK_PRINT_OPERATION_ACTION_PREVIEW;
 507     }
 508
 509   if (rdata->do_print)
 510     {
 511       settings = gtk_print_unix_dialog_get_settings (GTK_PRINT_UNIX_DIALOG (pd));
 512       page_setup = gtk_print_unix_dialog_get_page_setup (GTK_PRINT_UNIX_DIALOG (pd));
 513
 514       g_signal_emit_by_name (rdata->op, "custom-widget-apply", rdata->op->priv->custom_widget);
 515     }
 516
 517   finish_print (rdata, printer, page_setup, settings);
 518
 519   if (settings)
 520     g_object_unref (settings);
 521
 522   gtk_widget_destroy (GTK_WIDGET (pd));
 523
 524 }
 525
 526
 527 static void
 528 found_printer (GtkPrinter        *printer,
 529                PrintResponseData *rdata)
 530 {
 531   GtkPrintOperation *op = rdata->op;
 532   GtkPrintOperationPrivate *priv = op->priv;
 533   GtkPrintSettings *settings = NULL;
 534   GtkPageSetup *page_setup = NULL;
 535
 536   if (rdata->loop)
 537     g_main_loop_quit (rdata->loop);
 538
 539   if (printer != NULL)
 540     {
 541       rdata->result = GTK_PRINT_OPERATION_RESULT_APPLY;
 542
 543       rdata->do_print = TRUE;
 544
 545       if (priv->print_settings)
 546         settings = gtk_print_settings_copy (priv->print_settings);
 547       else
 548         settings = gtk_print_settings_new ();
 549
 550       gtk_print_settings_set_printer (settings,
 551                                       gtk_printer_get_name (printer));
 552
 553       if (priv->default_page_setup)
 554         page_setup = gtk_page_setup_copy (priv->default_page_setup);
 555       else
 556         page_setup = gtk_page_setup_new ();
 557   }
 558
 559   finish_print (rdata, printer, page_setup, settings);
 560
 561   if (settings)
 562     g_object_unref (settings);
 563
 564   if (page_setup)
 565     g_object_unref (page_setup);
 566 }
 567
 568 void
 569 _gtk_print_operation_platform_backend_run_dialog_async (GtkPrintOperation          *op,
 570                                                         gboolean                    show_dialog,
 571                                                         GtkWindow                  *parent,
 572                                                         GtkPrintOperationPrintFunc  print_cb)
 573 {
 574   GtkWidget *pd;
 575   PrintResponseData *rdata;
 576   const gchar *printer_name;
 577
 578   rdata = g_new (PrintResponseData, 1);
 579   rdata->op = g_object_ref (op);
 580   rdata->do_print = FALSE;
 581   rdata->result = GTK_PRINT_OPERATION_RESULT_CANCEL;
 582   rdata->print_cb = print_cb;
 583   rdata->parent = parent;
 584   rdata->loop = NULL;
 585   rdata->destroy = print_response_data_free;
 586
 587   if (show_dialog)
 588     {
 589       pd = get_print_dialog (op, parent);
 590       gtk_window_set_modal (GTK_WINDOW (pd), TRUE);
 591
 592       g_signal_connect (pd, "response",
 593                         G_CALLBACK (handle_print_response), rdata);
 594
 595       gtk_window_present (GTK_WINDOW (pd));
 596     }
 597   else
 598     {
 599       printer_name = NULL;
 600       if (op->priv->print_settings)
 601         printer_name = gtk_print_settings_get_printer (op->priv->print_settings);
 602
 603       find_printer (printer_name, (GFunc) found_printer, rdata);
 604     }
 605 }
 606
 607 cairo_surface_t *
 608 _gtk_print_operation_platform_backend_create_preview_surface (GtkPrintOperation *op,
 609                                                               GtkPageSetup      *page_setup,
 610                                                               gdouble           *dpi_x,
 611                                                               gdouble           *dpi_y,
 612                                                               gchar            **target)
 613 {
 614   gchar *tmp_dir, *dir_template, *preview_filename;
 615   GtkPaperSize *paper_size;
 616   gdouble w, h;
 617
 618   dir_template = g_build_filename (g_get_tmp_dir (), "print-preview-XXXXXX", NULL);
 619
 620   /* use temp dirs because apps like evince need to have extensions
 621    * to determine the mime type
 622    */
 623   tmp_dir = mkdtemp (dir_template);
 624   /* print preview pdf filename (please leave the trailing .pdf in place) */
 625   preview_filename = g_build_filename (tmp_dir,
 626                                        _("Print Preview.pdf"),
 627                                        NULL);
 628   g_free (dir_template);
 629   *target = preview_filename;
 630
 631   paper_size = gtk_page_setup_get_paper_size (page_setup);
 632   w = gtk_paper_size_get_width (paper_size, GTK_UNIT_POINTS);
 633   h = gtk_paper_size_get_height (paper_size, GTK_UNIT_POINTS);
 634
 635   *dpi_x = *dpi_y = 72;
 636   return cairo_pdf_surface_create (preview_filename, w, h);
 637 }
 638
 639 void
 640 _gtk_print_operation_platform_backend_preview_start_page (GtkPrintOperation *op,
 641                                                           cairo_surface_t   *surface,
 642                                                           cairo_t           *cr)
 643 {
 644 }
 645
 646 void
 647 _gtk_print_operation_platform_backend_preview_end_page (GtkPrintOperation *op,
 648                                                         cairo_surface_t   *surface,
 649                                                         cairo_t           *cr)
 650 {
 651   cairo_show_page (cr);
 652 }
 653
 654 void
 655 _gtk_print_operation_platform_backend_resize_preview_surface (GtkPrintOperation *op,
 656                                                               GtkPageSetup      *page_setup,
 657                                                               cairo_surface_t   *surface)
 658 {
 659   GtkPaperSize *paper_size;
 660   gdouble w, h;
 661
 662   paper_size = gtk_page_setup_get_paper_size (page_setup);
 663   w = gtk_paper_size_get_width (paper_size, GTK_UNIT_POINTS);
 664   h = gtk_paper_size_get_height (paper_size, GTK_UNIT_POINTS);
 665   cairo_pdf_surface_set_size (surface, w, h);
 666 }
 667
 668
 669 GtkPrintOperationResult
 670 _gtk_print_operation_platform_backend_run_dialog (GtkPrintOperation *op,
 671                                                   gboolean           show_dialog,
 672                                                   GtkWindow         *parent,
 673                                                   gboolean          *do_print)
 674  {
 675   GtkWidget *pd;
 676   PrintResponseData rdata;
 677   gint response;
 678   const gchar *printer_name;
 679
 680   rdata.op = op;
 681   rdata.do_print = FALSE;
 682   rdata.result = GTK_PRINT_OPERATION_RESULT_CANCEL;
 683   rdata.print_cb = NULL;
 684   rdata.destroy = NULL;
 685   rdata.parent = parent;
 686   rdata.loop = NULL;
 687
 688   if (show_dialog)
 689     {
 690       pd = get_print_dialog (op, parent);
 691
 692       response = gtk_dialog_run (GTK_DIALOG (pd));
 693       handle_print_response (pd, response, &rdata);
 694     }
 695   else
 696     {
 697       printer_name = NULL;
 698       if (op->priv->print_settings)
 699         printer_name = gtk_print_settings_get_printer (op->priv->print_settings);
 700
 701       rdata.loop = g_main_loop_new (NULL, FALSE);
 702       find_printer (printer_name,
 703                     (GFunc) found_printer, &rdata);
 704
 705       GDK_THREADS_LEAVE ();
 706       g_main_loop_run (rdata.loop);
 707       GDK_THREADS_ENTER ();
 708
 709       g_main_loop_unref (rdata.loop);
 710       rdata.loop = NULL;
 711     }
 712
 713   *do_print = rdata.do_print;
 714
 715   return rdata.result;
 716 }
 717
 718
 719 typedef struct
 720 {
 721   GtkPageSetup         *page_setup;
 722   GtkPageSetupDoneFunc  done_cb;
 723   gpointer              data;
 724   GDestroyNotify        destroy;
 725 } PageSetupResponseData;
 726
 727 static void
 728 page_setup_data_free (gpointer data)
 729 {
 730   PageSetupResponseData *rdata = data;
 731
 732   if (rdata->page_setup)
 733     g_object_unref (rdata->page_setup);
 734
 735   g_free (rdata);
 736 }
 737
 738 static void
 739 handle_page_setup_response (GtkWidget *dialog,
 740                             gint       response,
 741                             gpointer   data)
 742 {
 743   GtkPageSetupUnixDialog *psd;
 744   PageSetupResponseData *rdata = data;
 745
 746   psd = GTK_PAGE_SETUP_UNIX_DIALOG (dialog);
 747   if (response == GTK_RESPONSE_OK)
 748     rdata->page_setup = gtk_page_setup_unix_dialog_get_page_setup (psd);
 749
 750   gtk_widget_destroy (dialog);
 751
 752   if (rdata->done_cb)
 753     rdata->done_cb (rdata->page_setup, rdata->data);
 754
 755   if (rdata->destroy)
 756     rdata->destroy (rdata);
 757 }
 758
 759 static GtkWidget *
 760 get_page_setup_dialog (GtkWindow        *parent,
 761                        GtkPageSetup     *page_setup,
 762                        GtkPrintSettings *settings)
 763 {
 764   GtkWidget *dialog;
 765
 766   dialog = gtk_page_setup_unix_dialog_new (NULL, parent);
 767   if (page_setup)
 768     gtk_page_setup_unix_dialog_set_page_setup (GTK_PAGE_SETUP_UNIX_DIALOG (dialog),
 769                                                page_setup);
 770   gtk_page_setup_unix_dialog_set_print_settings (GTK_PAGE_SETUP_UNIX_DIALOG (dialog),
 771                                                  settings);
 772
 773   return dialog;
 774 }
 775
 776 /**
 777  * gtk_print_run_page_setup_dialog:
 778  * @parent: transient parent, or %NULL
 779  * @page_setup: an existing #GtkPageSetup, or %NULL
 780  * @settings: a #GtkPrintSettings
 781  *
 782  * Runs a page setup dialog, letting the user modify the values from
 783  * @page_setup. If the user cancels the dialog, the returned #GtkPageSetup
 784  * is identical to the passed in @page_setup, otherwise it contains the
 785  * modifications done in the dialog.
 786  *
 787  * Note that this function may use a recursive mainloop to show the page
 788  * setup dialog. See gtk_print_run_page_setup_dialog_async() if this is
 789  * a problem.
 790  *
 791  * Return value: a new #GtkPageSetup
 792  *
 793  * Since: 2.10
 794  */
 795 GtkPageSetup *
 796 gtk_print_run_page_setup_dialog (GtkWindow        *parent,
 797                                  GtkPageSetup     *page_setup,
 798                                  GtkPrintSettings *settings)
 799 {
 800   GtkWidget *dialog;
 801   gint response;
 802   PageSetupResponseData rdata;
 803
 804   rdata.page_setup = NULL;
 805   rdata.done_cb = NULL;
 806   rdata.data = NULL;
 807   rdata.destroy = NULL;
 808
 809   dialog = get_page_setup_dialog (parent, page_setup, settings);
 810   response = gtk_dialog_run (GTK_DIALOG (dialog));
 811   handle_page_setup_response (dialog, response, &rdata);
 812
 813   if (rdata.page_setup)
 814     return rdata.page_setup;
 815   else if (page_setup)
 816     return gtk_page_setup_copy (page_setup);
 817   else
 818     return gtk_page_setup_new ();
 819 }
 820
 821 /**
 822  * gtk_print_run_page_setup_dialog_async:
 823  * @parent: transient parent, or %NULL
 824  * @page_setup: an existing #GtkPageSetup, or %NULL
 825  * @settings: a #GtkPrintSettings
 826  * @done_cb: a function to call when the user saves the modified page setup
 827  * @data: user data to pass to @done_cb
 828  *
 829  * Runs a page setup dialog, letting the user modify the values from @page_setup.
 830  *
 831  * In contrast to gtk_print_run_page_setup_dialog(), this function  returns after
 832  * showing the page setup dialog on platforms that support this, and calls @done_cb
 833  * from a signal handler for the ::response signal of the dialog.
 834  *
 835  * Since: 2.10
 836  */
 837 void
 838 gtk_print_run_page_setup_dialog_async (GtkWindow            *parent,
 839                                        GtkPageSetup         *page_setup,
 840                                        GtkPrintSettings     *settings,
 841                                        GtkPageSetupDoneFunc  done_cb,
 842                                        gpointer              data)
 843 {
 844   GtkWidget *dialog;
 845   PageSetupResponseData *rdata;
 846
 847   dialog = get_page_setup_dialog (parent, page_setup, settings);
 848   gtk_window_set_modal (GTK_WINDOW (dialog), TRUE);
 849
 850   rdata = g_new (PageSetupResponseData, 1);
 851   rdata->page_setup = NULL;
 852   rdata->done_cb = done_cb;
 853   rdata->data = data;
 854   rdata->destroy = page_setup_data_free;
 855
 856   g_signal_connect (dialog, "response",
 857                     G_CALLBACK (handle_page_setup_response), rdata);
 858
 859   gtk_window_present (GTK_WINDOW (dialog));
 860  }
 861
 862 struct _PrinterFinder
 863 {
 864   gboolean found_printer;
 865   GFunc func;
 866   gpointer data;
 867   gchar *printer_name;
 868   GList *backends;
 869   guint timeout_tag;
 870   GtkPrinter *printer;
 871   GtkPrinter *default_printer;
 872   GtkPrinter *first_printer;
 873 };
 874
 875 static gboolean
 876 find_printer_idle (gpointer data)
 877 {
 878   PrinterFinder *finder = data;
 879   GtkPrinter *printer;
 880
 881   if (finder->printer != NULL)
 882     printer = finder->printer;
 883   else if (finder->default_printer != NULL)
 884     printer = finder->default_printer;
 885   else if (finder->first_printer != NULL)
 886     printer = finder->first_printer;
 887   else
 888     printer = NULL;
 889
 890   finder->func (printer, finder->data);
 891
 892   printer_finder_free (finder);
 893
 894   return FALSE;
 895 }
 896
 897 static void
 898 printer_added_cb (GtkPrintBackend *backend,
 899                   GtkPrinter      *printer,
 900                   PrinterFinder   *finder)
 901 {
 902   if (finder->found_printer)
 903     return;
 904
 905   /* FIXME this skips "Print to PDF" - is this intentional ? */
 906   if (gtk_printer_is_virtual (printer))
 907     return;
 908
 909   if (finder->printer_name != NULL &&
 910       strcmp (gtk_printer_get_name (printer), finder->printer_name) == 0)
 911     {
 912       finder->printer = g_object_ref (printer);
 913       finder->found_printer = TRUE;
 914     }
 915   else if (finder->default_printer == NULL &&
 916            gtk_printer_is_default (printer))
 917     {
 918       finder->default_printer = g_object_ref (printer);
 919       if (finder->printer_name == NULL)
 920         finder->found_printer = TRUE;
 921     }
 922   else
 923     if (finder->first_printer == NULL)
 924       finder->first_printer = g_object_ref (printer);
 925
 926   if (finder->found_printer)
 927     g_idle_add (find_printer_idle, finder);
 928 }
 929
 930 static void
 931 printer_list_done_cb (GtkPrintBackend *backend,
 932                       PrinterFinder   *finder)
 933 {
 934   finder->backends = g_list_remove (finder->backends, backend);
 935
 936   g_signal_handlers_disconnect_by_func (backend, printer_added_cb, finder);
 937   g_signal_handlers_disconnect_by_func (backend, printer_list_done_cb, finder);
 938
 939   gtk_print_backend_destroy (backend);
 940   g_object_unref (backend);
 941
 942   if (finder->backends == NULL && !finder->found_printer)
 943     g_idle_add (find_printer_idle, finder);
 944 }
 945
 946 static void
 947 find_printer_init (PrinterFinder   *finder,
 948                    GtkPrintBackend *backend)
 949 {
 950   GList *list;
 951   GList *node;
 952
 953   list = gtk_print_backend_get_printer_list (backend);
 954
 955   node = list;
 956   while (node != NULL)
 957     {
 958       printer_added_cb (backend, node->data, finder);
 959       node = node->next;
 960
 961       if (finder->found_printer)
 962         break;
 963     }
 964
 965   g_list_free (list);
 966
 967   if (gtk_print_backend_printer_list_is_done (backend))
 968     {
 969       finder->backends = g_list_remove (finder->backends, backend);
 970       gtk_print_backend_destroy (backend);
 971       g_object_unref (backend);
 972     }
 973   else
 974     {
 975       g_signal_connect (backend, "printer-added",
 976                         (GCallback) printer_added_cb,
 977                         finder);
 978       g_signal_connect (backend, "printer-list-done",
 979                         (GCallback) printer_list_done_cb,
 980                         finder);
 981     }
 982
 983 }
 984
 985 static void
 986 printer_finder_free (PrinterFinder *finder)
 987 {
 988   GList *l;
 989
 990   g_free (finder->printer_name);
 991
 992   if (finder->printer)
 993     g_object_unref (finder->printer);
 994
 995   if (finder->default_printer)
 996     g_object_unref (finder->default_printer);
 997
 998   if (finder->first_printer)
 999     g_object_unref (finder->first_printer);
1000
1001   for (l = finder->backends; l != NULL; l = l->next)
1002     {
1003       GtkPrintBackend *backend = l->data;
1004       g_signal_handlers_disconnect_by_func (backend, printer_added_cb, finder);
1005       g_signal_handlers_disconnect_by_func (backend, printer_list_done_cb, finder);
1006       gtk_print_backend_destroy (backend);
1007       g_object_unref (backend);
1008     }
1009
1010   g_list_free (finder->backends);
1011
1012   g_free (finder);
1013 }
1014
1015 static void
1016 find_printer (const gchar *printer,
1017               GFunc        func,
1018               gpointer     data)
1019 {
1020   GList *node, *next;
1021   PrinterFinder *finder;
1022
1023   finder = g_new0 (PrinterFinder, 1);
1024
1025   finder->printer_name = g_strdup (printer);
1026   finder->func = func;
1027   finder->data = data;
1028
1029   finder->backends = NULL;
1030   if (g_module_supported ())
1031     finder->backends = gtk_print_backend_load_modules ();
1032
1033   for (node = finder->backends; !finder->found_printer && node != NULL; node = next)
1034     {
1035       next = node->next;
1036       find_printer_init (finder, GTK_PRINT_BACKEND (node->data));
1037     }
1038
1039   if (finder->backends == NULL && !finder->found_printer)
1040     g_idle_add (find_printer_idle, finder);
1041 }
1042
1043 #define __GTK_PRINT_OPERATION_UNIX_C__
1044 #include "gtkaliasdef.c"