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 "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 (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       g_object_ref (op);
 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       op_unix->loop = NULL;
 322       g_object_unref (op);
 323     }
 324 }
 325
 326 static void
 327 job_status_changed_cb (GtkPrintJob       *job,
 328                        GtkPrintOperation *op)
 329 {
 330   _gtk_print_operation_set_status (op, gtk_print_job_get_status (job), NULL);
 331 }
 332
 333
 334 static GtkWidget *
 335 get_print_dialog (GtkPrintOperation *op,
 336                   GtkWindow         *parent)
 337 {
 338   GtkPrintOperationPrivate *priv = op->priv;
 339   GtkWidget *pd, *label;
 340   GtkPageSetup *page_setup;
 341   const gchar *custom_tab_label;
 342
 343   pd = gtk_print_unix_dialog_new (NULL, parent);
 344
 345   gtk_print_unix_dialog_set_manual_capabilities (GTK_PRINT_UNIX_DIALOG (pd),
 346                                                  GTK_PRINT_CAPABILITY_PAGE_SET |
 347                                                  GTK_PRINT_CAPABILITY_COPIES |
 348                                                  GTK_PRINT_CAPABILITY_COLLATE |
 349                                                  GTK_PRINT_CAPABILITY_REVERSE |
 350                                                  GTK_PRINT_CAPABILITY_SCALE |
 351                                                  GTK_PRINT_CAPABILITY_PREVIEW);
 352
 353   if (priv->print_settings)
 354     gtk_print_unix_dialog_set_settings (GTK_PRINT_UNIX_DIALOG (pd),
 355                                         priv->print_settings);
 356   if (priv->default_page_setup)
 357     page_setup = gtk_page_setup_copy (priv->default_page_setup);
 358   else
 359     page_setup = gtk_page_setup_new ();
 360
 361   gtk_print_unix_dialog_set_page_setup (GTK_PRINT_UNIX_DIALOG (pd),
 362                                         page_setup);
 363   g_object_unref (page_setup);
 364
 365   g_signal_emit_by_name (op, "create-custom-widget",
 366                          &priv->custom_widget);
 367
 368   if (priv->custom_widget)
 369     {
 370       custom_tab_label = priv->custom_tab_label;
 371
 372       if (custom_tab_label == NULL)
 373         {
 374           custom_tab_label = g_get_application_name ();
 375           if (custom_tab_label == NULL)
 376             custom_tab_label = _("Application");
 377         }
 378
 379       label = gtk_label_new (custom_tab_label);
 380
 381       gtk_print_unix_dialog_add_custom_tab (GTK_PRINT_UNIX_DIALOG (pd),
 382                                             priv->custom_widget, label);
 383     }
 384
 385   return pd;
 386 }
 387
 388 typedef struct
 389 {
 390   GtkPrintOperation           *op;
 391   gboolean                     do_print;
 392   gboolean                     do_preview;
 393   GtkPrintOperationResult      result;
 394   GtkPrintOperationPrintFunc   print_cb;
 395   GDestroyNotify               destroy;
 396   GtkWindow                   *parent;
 397   GMainLoop                   *loop;
 398 } PrintResponseData;
 399
 400 static void
 401 print_response_data_free (gpointer data)
 402 {
 403   PrintResponseData *rdata = data;
 404
 405   g_object_unref (rdata->op);
 406   g_free (rdata);
 407 }
 408
 409 static void
 410 finish_print (PrintResponseData *rdata,
 411               GtkPrinter        *printer,
 412               GtkPageSetup      *page_setup,
 413               GtkPrintSettings  *settings)
 414 {
 415   GtkPrintOperation *op = rdata->op;
 416   GtkPrintOperationPrivate *priv = op->priv;
 417   GtkPrintJob *job;
 418
 419   if (rdata->do_print)
 420     {
 421       gtk_print_operation_set_print_settings (op, settings);
 422       priv->print_context = _gtk_print_context_new (op);
 423       _gtk_print_context_set_page_setup (priv->print_context, page_setup);
 424
 425       if (!rdata->do_preview)
 426         {
 427           GtkPrintOperationUnix *op_unix;
 428           cairo_t *cr;
 429
 430           op_unix = g_new0 (GtkPrintOperationUnix, 1);
 431           priv->platform_data = op_unix;
 432           priv->free_platform_data = (GDestroyNotify) op_unix_free;
 433           op_unix->parent = rdata->parent;
 434
 435           priv->start_page = unix_start_page;
 436           priv->end_page = unix_end_page;
 437           priv->end_run = unix_end_run;
 438
 439           job = gtk_print_job_new (priv->job_name, printer, settings, page_setup);
 440           op_unix->job = job;
 441           gtk_print_job_set_track_print_status (job, priv->track_print_status);
 442
 443           op_unix->surface = gtk_print_job_get_surface (job, &priv->error);
 444           if (op_unix->surface == NULL)
 445             {
 446               rdata->result = GTK_PRINT_OPERATION_RESULT_ERROR;
 447               rdata->do_print = FALSE;
 448               goto out;
 449             }
 450
 451           cr = cairo_create (op_unix->surface);
 452           gtk_print_context_set_cairo_context (priv->print_context, cr, 72, 72);
 453           cairo_destroy (cr);
 454
 455           _gtk_print_operation_set_status (op, gtk_print_job_get_status (job), NULL);
 456
 457           op_unix->job_status_changed_tag =
 458             g_signal_connect (job, "status-changed",
 459                               G_CALLBACK (job_status_changed_cb), op);
 460
 461           priv->print_pages = job->print_pages;
 462           priv->page_ranges = job->page_ranges;
 463           priv->num_page_ranges = job->num_page_ranges;
 464
 465           priv->manual_num_copies = job->num_copies;
 466           priv->manual_collation = job->collate;
 467           priv->manual_reverse = job->reverse;
 468           priv->manual_page_set = job->page_set;
 469           priv->manual_scale = job->scale;
 470           priv->manual_orientation = job->rotate_to_orientation;
 471         }
 472     }
 473  out:
 474   if (rdata->print_cb)
 475     rdata->print_cb (op, rdata->parent, rdata->do_print, rdata->result);
 476
 477   if (rdata->destroy)
 478     rdata->destroy (rdata);
 479 }
 480
 481 static void
 482 handle_print_response (GtkWidget *dialog,
 483                        gint       response,
 484                        gpointer   data)
 485 {
 486   GtkPrintUnixDialog *pd = GTK_PRINT_UNIX_DIALOG (dialog);
 487   PrintResponseData *rdata = data;
 488   GtkPrintSettings *settings = NULL;
 489   GtkPageSetup *page_setup = NULL;
 490   GtkPrinter *printer = NULL;
 491
 492   if (response == GTK_RESPONSE_OK)
 493     {
 494       printer = gtk_print_unix_dialog_get_selected_printer (GTK_PRINT_UNIX_DIALOG (pd));
 495
 496       rdata->result = GTK_PRINT_OPERATION_RESULT_APPLY;
 497       rdata->do_preview = FALSE;
 498       if (printer != NULL)
 499         rdata->do_print = TRUE;
 500     }
 501   else if (response == GTK_RESPONSE_APPLY)
 502     {
 503       /* print preview */
 504       rdata->result = GTK_PRINT_OPERATION_RESULT_APPLY;
 505       rdata->do_preview = TRUE;
 506       rdata->do_print = TRUE;
 507
 508       rdata->op->priv->action = GTK_PRINT_OPERATION_ACTION_PREVIEW;
 509     }
 510
 511   if (rdata->do_print)
 512     {
 513       settings = gtk_print_unix_dialog_get_settings (GTK_PRINT_UNIX_DIALOG (pd));
 514       page_setup = gtk_print_unix_dialog_get_page_setup (GTK_PRINT_UNIX_DIALOG (pd));
 515
 516       g_signal_emit_by_name (rdata->op, "custom-widget-apply", rdata->op->priv->custom_widget);
 517     }
 518
 519   finish_print (rdata, printer, page_setup, settings);
 520
 521   if (settings)
 522     g_object_unref (settings);
 523
 524   gtk_widget_destroy (GTK_WIDGET (pd));
 525
 526 }
 527
 528
 529 static void
 530 found_printer (GtkPrinter        *printer,
 531                PrintResponseData *rdata)
 532 {
 533   GtkPrintOperation *op = rdata->op;
 534   GtkPrintOperationPrivate *priv = op->priv;
 535   GtkPrintSettings *settings = NULL;
 536   GtkPageSetup *page_setup = NULL;
 537
 538   if (rdata->loop)
 539     g_main_loop_quit (rdata->loop);
 540
 541   if (printer != NULL)
 542     {
 543       rdata->result = GTK_PRINT_OPERATION_RESULT_APPLY;
 544
 545       rdata->do_print = TRUE;
 546
 547       if (priv->print_settings)
 548         settings = gtk_print_settings_copy (priv->print_settings);
 549       else
 550         settings = gtk_print_settings_new ();
 551
 552       gtk_print_settings_set_printer (settings,
 553                                       gtk_printer_get_name (printer));
 554
 555       if (priv->default_page_setup)
 556         page_setup = gtk_page_setup_copy (priv->default_page_setup);
 557       else
 558         page_setup = gtk_page_setup_new ();
 559   }
 560
 561   finish_print (rdata, printer, page_setup, settings);
 562
 563   if (settings)
 564     g_object_unref (settings);
 565
 566   if (page_setup)
 567     g_object_unref (page_setup);
 568 }
 569
 570 void
 571 _gtk_print_operation_platform_backend_run_dialog_async (GtkPrintOperation          *op,
 572                                                         gboolean                    show_dialog,
 573                                                         GtkWindow                  *parent,
 574                                                         GtkPrintOperationPrintFunc  print_cb)
 575 {
 576   GtkWidget *pd;
 577   PrintResponseData *rdata;
 578   const gchar *printer_name;
 579
 580   rdata = g_new (PrintResponseData, 1);
 581   rdata->op = g_object_ref (op);
 582   rdata->do_print = FALSE;
 583   rdata->result = GTK_PRINT_OPERATION_RESULT_CANCEL;
 584   rdata->print_cb = print_cb;
 585   rdata->parent = parent;
 586   rdata->loop = NULL;
 587   rdata->destroy = print_response_data_free;
 588
 589   if (show_dialog)
 590     {
 591       pd = get_print_dialog (op, parent);
 592       gtk_window_set_modal (GTK_WINDOW (pd), TRUE);
 593
 594       g_signal_connect (pd, "response",
 595                         G_CALLBACK (handle_print_response), rdata);
 596
 597       gtk_window_present (GTK_WINDOW (pd));
 598     }
 599   else
 600     {
 601       printer_name = NULL;
 602       if (op->priv->print_settings)
 603         printer_name = gtk_print_settings_get_printer (op->priv->print_settings);
 604
 605       find_printer (printer_name, (GFunc) found_printer, rdata);
 606     }
 607 }
 608
 609 static cairo_status_t
 610 write_preview (void                *closure,
 611                const unsigned char *data,
 612                unsigned int         length)
 613 {
 614   gint fd = GPOINTER_TO_INT (closure);
 615   gssize written;
 616
 617   while (length > 0)
 618     {
 619       written = write (fd, data, length);
 620
 621       if (written == -1)
 622         {
 623           if (errno == EAGAIN || errno == EINTR)
 624             continue;
 625
 626           return CAIRO_STATUS_WRITE_ERROR;
 627         }
 628
 629       data += written;
 630       length -= written;
 631     }
 632
 633   return CAIRO_STATUS_SUCCESS;
 634 }
 635
 636 static void
 637 close_preview (void *data)
 638 {
 639   gint fd = GPOINTER_TO_INT (data);
 640
 641   close (fd);
 642 }
 643
 644 cairo_surface_t *
 645 _gtk_print_operation_platform_backend_create_preview_surface (GtkPrintOperation *op,
 646                                                               GtkPageSetup      *page_setup,
 647                                                               gdouble           *dpi_x,
 648                                                               gdouble           *dpi_y,
 649                                                               gchar            **target)
 650 {
 651   gchar *filename;
 652   gint fd;
 653   GtkPaperSize *paper_size;
 654   gdouble w, h;
 655   cairo_surface_t *surface;
 656   static cairo_user_data_key_t key;
 657
 658   filename = g_build_filename (g_get_tmp_dir (), "previewXXXXXX.pdf", NULL);
 659   fd = g_mkstemp (filename);
 660   *target = filename;
 661
 662   g_print ("target is %s\n", filename);
 663
 664   paper_size = gtk_page_setup_get_paper_size (page_setup);
 665   w = gtk_paper_size_get_width (paper_size, GTK_UNIT_POINTS);
 666   h = gtk_paper_size_get_height (paper_size, GTK_UNIT_POINTS);
 667
 668   *dpi_x = *dpi_y = 72;
 669   surface = cairo_pdf_surface_create_for_stream (write_preview, GINT_TO_POINTER(fd), w, h);
 670
 671   cairo_surface_set_user_data (surface, &key, GINT_TO_POINTER (fd), close_preview);
 672
 673   return surface;
 674 }
 675
 676 void
 677 _gtk_print_operation_platform_backend_preview_start_page (GtkPrintOperation *op,
 678                                                           cairo_surface_t   *surface,
 679                                                           cairo_t           *cr)
 680 {
 681 }
 682
 683 void
 684 _gtk_print_operation_platform_backend_preview_end_page (GtkPrintOperation *op,
 685                                                         cairo_surface_t   *surface,
 686                                                         cairo_t           *cr)
 687 {
 688   cairo_show_page (cr);
 689 }
 690
 691 void
 692 _gtk_print_operation_platform_backend_resize_preview_surface (GtkPrintOperation *op,
 693                                                               GtkPageSetup      *page_setup,
 694                                                               cairo_surface_t   *surface)
 695 {
 696   GtkPaperSize *paper_size;
 697   gdouble w, h;
 698
 699   paper_size = gtk_page_setup_get_paper_size (page_setup);
 700   w = gtk_paper_size_get_width (paper_size, GTK_UNIT_POINTS);
 701   h = gtk_paper_size_get_height (paper_size, GTK_UNIT_POINTS);
 702   cairo_pdf_surface_set_size (surface, w, h);
 703 }
 704
 705
 706 GtkPrintOperationResult
 707 _gtk_print_operation_platform_backend_run_dialog (GtkPrintOperation *op,
 708                                                   gboolean           show_dialog,
 709                                                   GtkWindow         *parent,
 710                                                   gboolean          *do_print)
 711  {
 712   GtkWidget *pd;
 713   PrintResponseData rdata;
 714   gint response;
 715   const gchar *printer_name;
 716
 717   rdata.op = op;
 718   rdata.do_print = FALSE;
 719   rdata.result = GTK_PRINT_OPERATION_RESULT_CANCEL;
 720   rdata.print_cb = NULL;
 721   rdata.destroy = NULL;
 722   rdata.parent = parent;
 723   rdata.loop = NULL;
 724
 725   if (show_dialog)
 726     {
 727       pd = get_print_dialog (op, parent);
 728
 729       response = gtk_dialog_run (GTK_DIALOG (pd));
 730       handle_print_response (pd, response, &rdata);
 731     }
 732   else
 733     {
 734       printer_name = NULL;
 735       if (op->priv->print_settings)
 736         printer_name = gtk_print_settings_get_printer (op->priv->print_settings);
 737
 738       rdata.loop = g_main_loop_new (NULL, FALSE);
 739       find_printer (printer_name,
 740                     (GFunc) found_printer, &rdata);
 741
 742       GDK_THREADS_LEAVE ();
 743       g_main_loop_run (rdata.loop);
 744       GDK_THREADS_ENTER ();
 745
 746       g_main_loop_unref (rdata.loop);
 747       rdata.loop = NULL;
 748     }
 749
 750   *do_print = rdata.do_print;
 751
 752   return rdata.result;
 753 }
 754
 755
 756 typedef struct
 757 {
 758   GtkPageSetup         *page_setup;
 759   GtkPageSetupDoneFunc  done_cb;
 760   gpointer              data;
 761   GDestroyNotify        destroy;
 762 } PageSetupResponseData;
 763
 764 static void
 765 page_setup_data_free (gpointer data)
 766 {
 767   PageSetupResponseData *rdata = data;
 768
 769   if (rdata->page_setup)
 770     g_object_unref (rdata->page_setup);
 771
 772   g_free (rdata);
 773 }
 774
 775 static void
 776 handle_page_setup_response (GtkWidget *dialog,
 777                             gint       response,
 778                             gpointer   data)
 779 {
 780   GtkPageSetupUnixDialog *psd;
 781   PageSetupResponseData *rdata = data;
 782
 783   psd = GTK_PAGE_SETUP_UNIX_DIALOG (dialog);
 784   if (response == GTK_RESPONSE_OK)
 785     rdata->page_setup = gtk_page_setup_unix_dialog_get_page_setup (psd);
 786
 787   gtk_widget_destroy (dialog);
 788
 789   if (rdata->done_cb)
 790     rdata->done_cb (rdata->page_setup, rdata->data);
 791
 792   if (rdata->destroy)
 793     rdata->destroy (rdata);
 794 }
 795
 796 static GtkWidget *
 797 get_page_setup_dialog (GtkWindow        *parent,
 798                        GtkPageSetup     *page_setup,
 799                        GtkPrintSettings *settings)
 800 {
 801   GtkWidget *dialog;
 802
 803   dialog = gtk_page_setup_unix_dialog_new (NULL, parent);
 804   if (page_setup)
 805     gtk_page_setup_unix_dialog_set_page_setup (GTK_PAGE_SETUP_UNIX_DIALOG (dialog),
 806                                                page_setup);
 807   gtk_page_setup_unix_dialog_set_print_settings (GTK_PAGE_SETUP_UNIX_DIALOG (dialog),
 808                                                  settings);
 809
 810   return dialog;
 811 }
 812
 813 /**
 814  * gtk_print_run_page_setup_dialog:
 815  * @parent: transient parent, or %NULL
 816  * @page_setup: an existing #GtkPageSetup, or %NULL
 817  * @settings: a #GtkPrintSettings
 818  *
 819  * Runs a page setup dialog, letting the user modify the values from
 820  * @page_setup. If the user cancels the dialog, the returned #GtkPageSetup
 821  * is identical to the passed in @page_setup, otherwise it contains the
 822  * modifications done in the dialog.
 823  *
 824  * Note that this function may use a recursive mainloop to show the page
 825  * setup dialog. See gtk_print_run_page_setup_dialog_async() if this is
 826  * a problem.
 827  *
 828  * Return value: a new #GtkPageSetup
 829  *
 830  * Since: 2.10
 831  */
 832 GtkPageSetup *
 833 gtk_print_run_page_setup_dialog (GtkWindow        *parent,
 834                                  GtkPageSetup     *page_setup,
 835                                  GtkPrintSettings *settings)
 836 {
 837   GtkWidget *dialog;
 838   gint response;
 839   PageSetupResponseData rdata;
 840
 841   rdata.page_setup = NULL;
 842   rdata.done_cb = NULL;
 843   rdata.data = NULL;
 844   rdata.destroy = NULL;
 845
 846   dialog = get_page_setup_dialog (parent, page_setup, settings);
 847   response = gtk_dialog_run (GTK_DIALOG (dialog));
 848   handle_page_setup_response (dialog, response, &rdata);
 849
 850   if (rdata.page_setup)
 851     return rdata.page_setup;
 852   else if (page_setup)
 853     return gtk_page_setup_copy (page_setup);
 854   else
 855     return gtk_page_setup_new ();
 856 }
 857
 858 /**
 859  * gtk_print_run_page_setup_dialog_async:
 860  * @parent: transient parent, or %NULL
 861  * @page_setup: an existing #GtkPageSetup, or %NULL
 862  * @settings: a #GtkPrintSettings
 863  * @done_cb: a function to call when the user saves the modified page setup
 864  * @data: user data to pass to @done_cb
 865  *
 866  * Runs a page setup dialog, letting the user modify the values from @page_setup.
 867  *
 868  * In contrast to gtk_print_run_page_setup_dialog(), this function  returns after
 869  * showing the page setup dialog on platforms that support this, and calls @done_cb
 870  * from a signal handler for the ::response signal of the dialog.
 871  *
 872  * Since: 2.10
 873  */
 874 void
 875 gtk_print_run_page_setup_dialog_async (GtkWindow            *parent,
 876                                        GtkPageSetup         *page_setup,
 877                                        GtkPrintSettings     *settings,
 878                                        GtkPageSetupDoneFunc  done_cb,
 879                                        gpointer              data)
 880 {
 881   GtkWidget *dialog;
 882   PageSetupResponseData *rdata;
 883
 884   dialog = get_page_setup_dialog (parent, page_setup, settings);
 885   gtk_window_set_modal (GTK_WINDOW (dialog), TRUE);
 886
 887   rdata = g_new (PageSetupResponseData, 1);
 888   rdata->page_setup = NULL;
 889   rdata->done_cb = done_cb;
 890   rdata->data = data;
 891   rdata->destroy = page_setup_data_free;
 892
 893   g_signal_connect (dialog, "response",
 894                     G_CALLBACK (handle_page_setup_response), rdata);
 895
 896   gtk_window_present (GTK_WINDOW (dialog));
 897  }
 898
 899 struct _PrinterFinder
 900 {
 901   gboolean found_printer;
 902   GFunc func;
 903   gpointer data;
 904   gchar *printer_name;
 905   GList *backends;
 906   guint timeout_tag;
 907   GtkPrinter *printer;
 908   GtkPrinter *default_printer;
 909   GtkPrinter *first_printer;
 910 };
 911
 912 static gboolean
 913 find_printer_idle (gpointer data)
 914 {
 915   PrinterFinder *finder = data;
 916   GtkPrinter *printer;
 917
 918   if (finder->printer != NULL)
 919     printer = finder->printer;
 920   else if (finder->default_printer != NULL)
 921     printer = finder->default_printer;
 922   else if (finder->first_printer != NULL)
 923     printer = finder->first_printer;
 924   else
 925     printer = NULL;
 926
 927   finder->func (printer, finder->data);
 928
 929   printer_finder_free (finder);
 930
 931   return FALSE;
 932 }
 933
 934 static void
 935 printer_added_cb (GtkPrintBackend *backend,
 936                   GtkPrinter      *printer,
 937                   PrinterFinder   *finder)
 938 {
 939   if (finder->found_printer)
 940     return;
 941
 942   /* FIXME this skips "Print to PDF" - is this intentional ? */
 943   if (gtk_printer_is_virtual (printer))
 944     return;
 945
 946   if (finder->printer_name != NULL &&
 947       strcmp (gtk_printer_get_name (printer), finder->printer_name) == 0)
 948     {
 949       finder->printer = g_object_ref (printer);
 950       finder->found_printer = TRUE;
 951     }
 952   else if (finder->default_printer == NULL &&
 953            gtk_printer_is_default (printer))
 954     {
 955       finder->default_printer = g_object_ref (printer);
 956       if (finder->printer_name == NULL)
 957         finder->found_printer = TRUE;
 958     }
 959   else
 960     if (finder->first_printer == NULL)
 961       finder->first_printer = g_object_ref (printer);
 962
 963   if (finder->found_printer)
 964     g_idle_add (find_printer_idle, finder);
 965 }
 966
 967 static void
 968 printer_list_done_cb (GtkPrintBackend *backend,
 969                       PrinterFinder   *finder)
 970 {
 971   finder->backends = g_list_remove (finder->backends, backend);
 972
 973   g_signal_handlers_disconnect_by_func (backend, printer_added_cb, finder);
 974   g_signal_handlers_disconnect_by_func (backend, printer_list_done_cb, finder);
 975
 976   gtk_print_backend_destroy (backend);
 977   g_object_unref (backend);
 978
 979   if (finder->backends == NULL && !finder->found_printer)
 980     g_idle_add (find_printer_idle, finder);
 981 }
 982
 983 static void
 984 find_printer_init (PrinterFinder   *finder,
 985                    GtkPrintBackend *backend)
 986 {
 987   GList *list;
 988   GList *node;
 989
 990   list = gtk_print_backend_get_printer_list (backend);
 991
 992   node = list;
 993   while (node != NULL)
 994     {
 995       printer_added_cb (backend, node->data, finder);
 996       node = node->next;
 997
 998       if (finder->found_printer)
 999         break;
1000     }
1001
1002   g_list_free (list);
1003
1004   if (gtk_print_backend_printer_list_is_done (backend))
1005     {
1006       finder->backends = g_list_remove (finder->backends, backend);
1007       gtk_print_backend_destroy (backend);
1008       g_object_unref (backend);
1009     }
1010   else
1011     {
1012       g_signal_connect (backend, "printer-added",
1013                         (GCallback) printer_added_cb,
1014                         finder);
1015       g_signal_connect (backend, "printer-list-done",
1016                         (GCallback) printer_list_done_cb,
1017                         finder);
1018     }
1019
1020 }
1021
1022 static void
1023 printer_finder_free (PrinterFinder *finder)
1024 {
1025   GList *l;
1026
1027   g_free (finder->printer_name);
1028
1029   if (finder->printer)
1030     g_object_unref (finder->printer);
1031
1032   if (finder->default_printer)
1033     g_object_unref (finder->default_printer);
1034
1035   if (finder->first_printer)
1036     g_object_unref (finder->first_printer);
1037
1038   for (l = finder->backends; l != NULL; l = l->next)
1039     {
1040       GtkPrintBackend *backend = l->data;
1041       g_signal_handlers_disconnect_by_func (backend, printer_added_cb, finder);
1042       g_signal_handlers_disconnect_by_func (backend, printer_list_done_cb, finder);
1043       gtk_print_backend_destroy (backend);
1044       g_object_unref (backend);
1045     }
1046
1047   g_list_free (finder->backends);
1048
1049   g_free (finder);
1050 }
1051
1052 static void
1053 find_printer (const gchar *printer,
1054               GFunc        func,
1055               gpointer     data)
1056 {
1057   GList *node, *next;
1058   PrinterFinder *finder;
1059
1060   finder = g_new0 (PrinterFinder, 1);
1061
1062   finder->printer_name = g_strdup (printer);
1063   finder->func = func;
1064   finder->data = data;
1065
1066   finder->backends = NULL;
1067   if (g_module_supported ())
1068     finder->backends = gtk_print_backend_load_modules ();
1069
1070   for (node = finder->backends; !finder->found_printer && node != NULL; node = next)
1071     {
1072       next = node->next;
1073       find_printer_init (finder, GTK_PRINT_BACKEND (node->data));
1074     }
1075
1076   if (finder->backends == NULL && !finder->found_printer)
1077     g_idle_add (find_printer_idle, finder);
1078 }
1079
1080 #define __GTK_PRINT_OPERATION_UNIX_C__
1081 #include "gtkaliasdef.c"