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
 311   if (wait)
 312     {
 313       if (!op_unix->data_sent)
 314         {
 315           GDK_THREADS_LEAVE ();
 316           g_main_loop_run (op_unix->loop);
 317           GDK_THREADS_ENTER ();
 318         }
 319       g_main_loop_unref (op_unix->loop);
 320     }
 321 }
 322
 323 static void
 324 job_status_changed_cb (GtkPrintJob       *job,
 325                        GtkPrintOperation *op)
 326 {
 327   _gtk_print_operation_set_status (op, gtk_print_job_get_status (job), NULL);
 328 }
 329
 330
 331 static GtkWidget *
 332 get_print_dialog (GtkPrintOperation *op,
 333                   GtkWindow         *parent)
 334 {
 335   GtkPrintOperationPrivate *priv = op->priv;
 336   GtkWidget *pd, *label;
 337   GtkPageSetup *page_setup;
 338   const gchar *custom_tab_label;
 339
 340   pd = gtk_print_unix_dialog_new (NULL, parent);
 341
 342   gtk_print_unix_dialog_set_manual_capabilities (GTK_PRINT_UNIX_DIALOG (pd),
 343                                                  GTK_PRINT_CAPABILITY_PAGE_SET |
 344                                                  GTK_PRINT_CAPABILITY_COPIES |
 345                                                  GTK_PRINT_CAPABILITY_COLLATE |
 346                                                  GTK_PRINT_CAPABILITY_REVERSE |
 347                                                  GTK_PRINT_CAPABILITY_SCALE |
 348                                                  GTK_PRINT_CAPABILITY_GENERATE_PDF |
 349                                                  GTK_PRINT_CAPABILITY_GENERATE_PS);
 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 static cairo_status_t
 608 write_preview (void                *closure,
 609                const unsigned char *data,
 610                unsigned int         length)
 611 {
 612   gint fd = GPOINTER_TO_INT (closure);
 613   gssize written;
 614
 615   while (length > 0)
 616     {
 617       written = write (fd, data, length);
 618
 619       if (written == -1)
 620         {
 621           if (errno == EAGAIN || errno == EINTR)
 622             continue;
 623
 624           return CAIRO_STATUS_WRITE_ERROR;
 625         }
 626
 627       data += written;
 628       length -= written;
 629     }
 630
 631   return CAIRO_STATUS_SUCCESS;
 632 }
 633
 634 static void
 635 close_preview (void *data)
 636 {
 637   gint fd = GPOINTER_TO_INT (data);
 638
 639   close (fd);
 640 }
 641
 642 cairo_surface_t *
 643 _gtk_print_operation_platform_backend_create_preview_surface (GtkPrintOperation *op,
 644                                                               GtkPageSetup      *page_setup,
 645                                                               gdouble           *dpi_x,
 646                                                               gdouble           *dpi_y,
 647                                                               gchar            **target)
 648 {
 649   gchar *filename;
 650   gint fd;
 651   GtkPaperSize *paper_size;
 652   gdouble w, h;
 653   cairo_surface_t *surface;
 654   static cairo_user_data_key_t key;
 655
 656   filename = g_build_filename (g_get_tmp_dir (), "previewXXXXXX.pdf", NULL);
 657   fd = g_mkstemp (filename);
 658   *target = filename;
 659
 660   g_print ("target is %s\n", filename);
 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
 666   *dpi_x = *dpi_y = 72;
 667   surface = cairo_pdf_surface_create_for_stream (write_preview, GINT_TO_POINTER(fd), w, h);
 668
 669   cairo_surface_set_user_data (surface, &key, GINT_TO_POINTER (fd), close_preview);
 670
 671   return surface;
 672 }
 673
 674 void
 675 _gtk_print_operation_platform_backend_preview_start_page (GtkPrintOperation *op,
 676                                                           cairo_surface_t   *surface,
 677                                                           cairo_t           *cr)
 678 {
 679 }
 680
 681 void
 682 _gtk_print_operation_platform_backend_preview_end_page (GtkPrintOperation *op,
 683                                                         cairo_surface_t   *surface,
 684                                                         cairo_t           *cr)
 685 {
 686   cairo_show_page (cr);
 687 }
 688
 689 void
 690 _gtk_print_operation_platform_backend_resize_preview_surface (GtkPrintOperation *op,
 691                                                               GtkPageSetup      *page_setup,
 692                                                               cairo_surface_t   *surface)
 693 {
 694   GtkPaperSize *paper_size;
 695   gdouble w, h;
 696
 697   paper_size = gtk_page_setup_get_paper_size (page_setup);
 698   w = gtk_paper_size_get_width (paper_size, GTK_UNIT_POINTS);
 699   h = gtk_paper_size_get_height (paper_size, GTK_UNIT_POINTS);
 700   cairo_pdf_surface_set_size (surface, w, h);
 701 }
 702
 703
 704 GtkPrintOperationResult
 705 _gtk_print_operation_platform_backend_run_dialog (GtkPrintOperation *op,
 706                                                   gboolean           show_dialog,
 707                                                   GtkWindow         *parent,
 708                                                   gboolean          *do_print)
 709  {
 710   GtkWidget *pd;
 711   PrintResponseData rdata;
 712   gint response;
 713   const gchar *printer_name;
 714
 715   rdata.op = op;
 716   rdata.do_print = FALSE;
 717   rdata.result = GTK_PRINT_OPERATION_RESULT_CANCEL;
 718   rdata.print_cb = NULL;
 719   rdata.destroy = NULL;
 720   rdata.parent = parent;
 721   rdata.loop = NULL;
 722
 723   if (show_dialog)
 724     {
 725       pd = get_print_dialog (op, parent);
 726
 727       response = gtk_dialog_run (GTK_DIALOG (pd));
 728       handle_print_response (pd, response, &rdata);
 729     }
 730   else
 731     {
 732       printer_name = NULL;
 733       if (op->priv->print_settings)
 734         printer_name = gtk_print_settings_get_printer (op->priv->print_settings);
 735
 736       rdata.loop = g_main_loop_new (NULL, FALSE);
 737       find_printer (printer_name,
 738                     (GFunc) found_printer, &rdata);
 739
 740       GDK_THREADS_LEAVE ();
 741       g_main_loop_run (rdata.loop);
 742       GDK_THREADS_ENTER ();
 743
 744       g_main_loop_unref (rdata.loop);
 745       rdata.loop = NULL;
 746     }
 747
 748   *do_print = rdata.do_print;
 749
 750   return rdata.result;
 751 }
 752
 753
 754 typedef struct
 755 {
 756   GtkPageSetup         *page_setup;
 757   GtkPageSetupDoneFunc  done_cb;
 758   gpointer              data;
 759   GDestroyNotify        destroy;
 760 } PageSetupResponseData;
 761
 762 static void
 763 page_setup_data_free (gpointer data)
 764 {
 765   PageSetupResponseData *rdata = data;
 766
 767   if (rdata->page_setup)
 768     g_object_unref (rdata->page_setup);
 769
 770   g_free (rdata);
 771 }
 772
 773 static void
 774 handle_page_setup_response (GtkWidget *dialog,
 775                             gint       response,
 776                             gpointer   data)
 777 {
 778   GtkPageSetupUnixDialog *psd;
 779   PageSetupResponseData *rdata = data;
 780
 781   psd = GTK_PAGE_SETUP_UNIX_DIALOG (dialog);
 782   if (response == GTK_RESPONSE_OK)
 783     rdata->page_setup = gtk_page_setup_unix_dialog_get_page_setup (psd);
 784
 785   gtk_widget_destroy (dialog);
 786
 787   if (rdata->done_cb)
 788     rdata->done_cb (rdata->page_setup, rdata->data);
 789
 790   if (rdata->destroy)
 791     rdata->destroy (rdata);
 792 }
 793
 794 static GtkWidget *
 795 get_page_setup_dialog (GtkWindow        *parent,
 796                        GtkPageSetup     *page_setup,
 797                        GtkPrintSettings *settings)
 798 {
 799   GtkWidget *dialog;
 800
 801   dialog = gtk_page_setup_unix_dialog_new (NULL, parent);
 802   if (page_setup)
 803     gtk_page_setup_unix_dialog_set_page_setup (GTK_PAGE_SETUP_UNIX_DIALOG (dialog),
 804                                                page_setup);
 805   gtk_page_setup_unix_dialog_set_print_settings (GTK_PAGE_SETUP_UNIX_DIALOG (dialog),
 806                                                  settings);
 807
 808   return dialog;
 809 }
 810
 811 /**
 812  * gtk_print_run_page_setup_dialog:
 813  * @parent: transient parent, or %NULL
 814  * @page_setup: an existing #GtkPageSetup, or %NULL
 815  * @settings: a #GtkPrintSettings
 816  *
 817  * Runs a page setup dialog, letting the user modify the values from
 818  * @page_setup. If the user cancels the dialog, the returned #GtkPageSetup
 819  * is identical to the passed in @page_setup, otherwise it contains the
 820  * modifications done in the dialog.
 821  *
 822  * Note that this function may use a recursive mainloop to show the page
 823  * setup dialog. See gtk_print_run_page_setup_dialog_async() if this is
 824  * a problem.
 825  *
 826  * Return value: a new #GtkPageSetup
 827  *
 828  * Since: 2.10
 829  */
 830 GtkPageSetup *
 831 gtk_print_run_page_setup_dialog (GtkWindow        *parent,
 832                                  GtkPageSetup     *page_setup,
 833                                  GtkPrintSettings *settings)
 834 {
 835   GtkWidget *dialog;
 836   gint response;
 837   PageSetupResponseData rdata;
 838
 839   rdata.page_setup = NULL;
 840   rdata.done_cb = NULL;
 841   rdata.data = NULL;
 842   rdata.destroy = NULL;
 843
 844   dialog = get_page_setup_dialog (parent, page_setup, settings);
 845   response = gtk_dialog_run (GTK_DIALOG (dialog));
 846   handle_page_setup_response (dialog, response, &rdata);
 847
 848   if (rdata.page_setup)
 849     return rdata.page_setup;
 850   else if (page_setup)
 851     return gtk_page_setup_copy (page_setup);
 852   else
 853     return gtk_page_setup_new ();
 854 }
 855
 856 /**
 857  * gtk_print_run_page_setup_dialog_async:
 858  * @parent: transient parent, or %NULL
 859  * @page_setup: an existing #GtkPageSetup, or %NULL
 860  * @settings: a #GtkPrintSettings
 861  * @done_cb: a function to call when the user saves the modified page setup
 862  * @data: user data to pass to @done_cb
 863  *
 864  * Runs a page setup dialog, letting the user modify the values from @page_setup.
 865  *
 866  * In contrast to gtk_print_run_page_setup_dialog(), this function  returns after
 867  * showing the page setup dialog on platforms that support this, and calls @done_cb
 868  * from a signal handler for the ::response signal of the dialog.
 869  *
 870  * Since: 2.10
 871  */
 872 void
 873 gtk_print_run_page_setup_dialog_async (GtkWindow            *parent,
 874                                        GtkPageSetup         *page_setup,
 875                                        GtkPrintSettings     *settings,
 876                                        GtkPageSetupDoneFunc  done_cb,
 877                                        gpointer              data)
 878 {
 879   GtkWidget *dialog;
 880   PageSetupResponseData *rdata;
 881
 882   dialog = get_page_setup_dialog (parent, page_setup, settings);
 883   gtk_window_set_modal (GTK_WINDOW (dialog), TRUE);
 884
 885   rdata = g_new (PageSetupResponseData, 1);
 886   rdata->page_setup = NULL;
 887   rdata->done_cb = done_cb;
 888   rdata->data = data;
 889   rdata->destroy = page_setup_data_free;
 890
 891   g_signal_connect (dialog, "response",
 892                     G_CALLBACK (handle_page_setup_response), rdata);
 893
 894   gtk_window_present (GTK_WINDOW (dialog));
 895  }
 896
 897 struct _PrinterFinder
 898 {
 899   gboolean found_printer;
 900   GFunc func;
 901   gpointer data;
 902   gchar *printer_name;
 903   GList *backends;
 904   guint timeout_tag;
 905   GtkPrinter *printer;
 906   GtkPrinter *default_printer;
 907   GtkPrinter *first_printer;
 908 };
 909
 910 static gboolean
 911 find_printer_idle (gpointer data)
 912 {
 913   PrinterFinder *finder = data;
 914   GtkPrinter *printer;
 915
 916   if (finder->printer != NULL)
 917     printer = finder->printer;
 918   else if (finder->default_printer != NULL)
 919     printer = finder->default_printer;
 920   else if (finder->first_printer != NULL)
 921     printer = finder->first_printer;
 922   else
 923     printer = NULL;
 924
 925   finder->func (printer, finder->data);
 926
 927   printer_finder_free (finder);
 928
 929   return FALSE;
 930 }
 931
 932 static void
 933 printer_added_cb (GtkPrintBackend *backend,
 934                   GtkPrinter      *printer,
 935                   PrinterFinder   *finder)
 936 {
 937   if (finder->found_printer)
 938     return;
 939
 940   /* FIXME this skips "Print to PDF" - is this intentional ? */
 941   if (gtk_printer_is_virtual (printer))
 942     return;
 943
 944   if (finder->printer_name != NULL &&
 945       strcmp (gtk_printer_get_name (printer), finder->printer_name) == 0)
 946     {
 947       finder->printer = g_object_ref (printer);
 948       finder->found_printer = TRUE;
 949     }
 950   else if (finder->default_printer == NULL &&
 951            gtk_printer_is_default (printer))
 952     {
 953       finder->default_printer = g_object_ref (printer);
 954       if (finder->printer_name == NULL)
 955         finder->found_printer = TRUE;
 956     }
 957   else
 958     if (finder->first_printer == NULL)
 959       finder->first_printer = g_object_ref (printer);
 960
 961   if (finder->found_printer)
 962     g_idle_add (find_printer_idle, finder);
 963 }
 964
 965 static void
 966 printer_list_done_cb (GtkPrintBackend *backend,
 967                       PrinterFinder   *finder)
 968 {
 969   finder->backends = g_list_remove (finder->backends, backend);
 970
 971   g_signal_handlers_disconnect_by_func (backend, printer_added_cb, finder);
 972   g_signal_handlers_disconnect_by_func (backend, printer_list_done_cb, finder);
 973
 974   gtk_print_backend_destroy (backend);
 975   g_object_unref (backend);
 976
 977   if (finder->backends == NULL && !finder->found_printer)
 978     g_idle_add (find_printer_idle, finder);
 979 }
 980
 981 static void
 982 find_printer_init (PrinterFinder   *finder,
 983                    GtkPrintBackend *backend)
 984 {
 985   GList *list;
 986   GList *node;
 987
 988   list = gtk_print_backend_get_printer_list (backend);
 989
 990   node = list;
 991   while (node != NULL)
 992     {
 993       printer_added_cb (backend, node->data, finder);
 994       node = node->next;
 995
 996       if (finder->found_printer)
 997         break;
 998     }
 999
1000   g_list_free (list);
1001
1002   if (gtk_print_backend_printer_list_is_done (backend))
1003     {
1004       finder->backends = g_list_remove (finder->backends, backend);
1005       gtk_print_backend_destroy (backend);
1006       g_object_unref (backend);
1007     }
1008   else
1009     {
1010       g_signal_connect (backend, "printer-added",
1011                         (GCallback) printer_added_cb,
1012                         finder);
1013       g_signal_connect (backend, "printer-list-done",
1014                         (GCallback) printer_list_done_cb,
1015                         finder);
1016     }
1017
1018 }
1019
1020 static void
1021 printer_finder_free (PrinterFinder *finder)
1022 {
1023   GList *l;
1024
1025   g_free (finder->printer_name);
1026
1027   if (finder->printer)
1028     g_object_unref (finder->printer);
1029
1030   if (finder->default_printer)
1031     g_object_unref (finder->default_printer);
1032
1033   if (finder->first_printer)
1034     g_object_unref (finder->first_printer);
1035
1036   for (l = finder->backends; l != NULL; l = l->next)
1037     {
1038       GtkPrintBackend *backend = l->data;
1039       g_signal_handlers_disconnect_by_func (backend, printer_added_cb, finder);
1040       g_signal_handlers_disconnect_by_func (backend, printer_list_done_cb, finder);
1041       gtk_print_backend_destroy (backend);
1042       g_object_unref (backend);
1043     }
1044
1045   g_list_free (finder->backends);
1046
1047   g_free (finder);
1048 }
1049
1050 static void
1051 find_printer (const gchar *printer,
1052               GFunc        func,
1053               gpointer     data)
1054 {
1055   GList *node, *next;
1056   PrinterFinder *finder;
1057
1058   finder = g_new0 (PrinterFinder, 1);
1059
1060   finder->printer_name = g_strdup (printer);
1061   finder->func = func;
1062   finder->data = data;
1063
1064   finder->backends = NULL;
1065   if (g_module_supported ())
1066     finder->backends = gtk_print_backend_load_modules ();
1067
1068   for (node = finder->backends; !finder->found_printer && node != NULL; node = next)
1069     {
1070       next = node->next;
1071       find_printer_init (finder, GTK_PRINT_BACKEND (node->data));
1072     }
1073
1074   if (finder->backends == NULL && !finder->found_printer)
1075     g_idle_add (find_printer_idle, finder);
1076 }
1077
1078 #define __GTK_PRINT_OPERATION_UNIX_C__
1079 #include "gtkaliasdef.c"