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 *pdf_filename,
 122                                const gchar *settings_filename,
 123                                gboolean    *pdf_filename_replaced,
 124                                gboolean    *settings_filename_replaced)
 125 {
 126   const gchar *inptr, *start;
 127   gchar *result;
 128   GString *final;
 129
 130   g_return_val_if_fail (cmd != NULL, NULL);
 131   g_return_val_if_fail (pdf_filename != NULL, NULL);
 132   g_return_val_if_fail (settings_filename != NULL, NULL);
 133
 134   result = NULL;
 135   final = g_string_new (NULL);
 136
 137   *pdf_filename_replaced = FALSE;
 138   *settings_filename_replaced = FALSE;
 139
 140   start = inptr = cmd;
 141   while ((inptr = strchr (inptr, '%')) != NULL)
 142     {
 143       g_string_append_len (final, start, inptr - start);
 144       inptr++;
 145       switch (*inptr)
 146         {
 147           case 'f':
 148             g_string_append (final, pdf_filename);
 149             *pdf_filename_replaced = TRUE;
 150             break;
 151
 152           case 's':
 153             g_string_append (final, settings_filename);
 154             *settings_filename_replaced = TRUE;
 155             break;
 156
 157           case '%':
 158             g_string_append_c (final, '%');
 159             break;
 160
 161           default:
 162             g_string_append_c (final, '%');
 163             if (*inptr)
 164               g_string_append_c (final, *inptr);
 165             break;
 166         }
 167       if (*inptr)
 168         inptr++;
 169       start = inptr;
 170     }
 171   g_string_append (final, start);
 172
 173   result = final->str;
 174
 175   g_string_free (final, FALSE);
 176
 177   return result;
 178 }
 179
 180 void
 181 _gtk_print_operation_platform_backend_launch_preview (GtkPrintOperation *op,
 182                                                       cairo_surface_t   *surface,
 183                                                       GtkWindow         *parent,
 184                                                       const gchar       *filename)
 185 {
 186   gint argc;
 187   gchar **argv;
 188   gchar *cmd;
 189   gchar *preview_cmd;
 190   GtkSettings *settings;
 191   GtkPrintSettings *print_settings;
 192   gchar *settings_filename;
 193   gchar *quoted_filename;
 194   gchar *quoted_settings_filename;
 195   gboolean filename_used;
 196   gboolean settings_used;
 197   GdkScreen *screen;
 198   GError *error = NULL;
 199   gint fd;
 200
 201   cairo_surface_destroy (surface);
 202
 203   if (parent)
 204     screen = gtk_window_get_screen (parent);
 205   else
 206     screen = gdk_screen_get_default ();
 207
 208   settings_filename = g_build_filename (g_get_tmp_dir (), "settingsXXXXXX.ini", NULL);
 209   fd = g_mkstemp (settings_filename);
 210
 211   print_settings = gtk_print_operation_get_print_settings (op);
 212   if (!gtk_print_settings_to_file (print_settings, settings_filename, &error))
 213     goto out;
 214
 215   settings = gtk_settings_get_for_screen (screen);
 216   g_object_get (settings, "gtk-print-preview-command", &preview_cmd, NULL);
 217
 218   quoted_filename = g_shell_quote (filename);
 219   quoted_settings_filename = g_shell_quote (settings_filename);
 220   cmd = shell_command_substitute_file (preview_cmd, quoted_filename, quoted_settings_filename, &filename_used, &settings_used);
 221   g_shell_parse_argv (cmd, &argc, &argv, &error);
 222
 223   g_free (preview_cmd);
 224   g_free (quoted_filename);
 225   g_free (quoted_settings_filename);
 226   g_free (cmd);
 227
 228   if (error != NULL)
 229     goto out;
 230
 231   gdk_spawn_on_screen (screen, NULL, argv, NULL, G_SPAWN_SEARCH_PATH, NULL, NULL, NULL, &error);
 232
 233   g_strfreev (argv);
 234
 235  out:
 236   close (fd);
 237
 238   if (error != NULL)
 239     {
 240       GtkWidget *edialog;
 241       edialog = gtk_message_dialog_new (parent,
 242                                         GTK_DIALOG_DESTROY_WITH_PARENT,
 243                                         GTK_MESSAGE_ERROR,
 244                                         GTK_BUTTONS_CLOSE,
 245                                         _("Error launching preview") /* FIXME better text */);
 246       gtk_message_dialog_format_secondary_text (GTK_MESSAGE_DIALOG (edialog),
 247                                                 "%s", error->message);
 248       g_signal_connect (edialog, "response",
 249                         G_CALLBACK (gtk_widget_destroy), NULL);
 250
 251       gtk_window_present (GTK_WINDOW (edialog));
 252
 253       g_error_free (error);
 254
 255       filename_used = FALSE;
 256       settings_used = FALSE;
 257    }
 258
 259   if (!filename_used)
 260     g_unlink (filename);
 261
 262   if (!settings_used)
 263     g_unlink (settings_filename);
 264
 265   g_free (settings_filename);
 266 }
 267
 268 static void
 269 unix_finish_send  (GtkPrintJob *job,
 270                    gpointer     user_data,
 271                    GError      *error)
 272 {
 273   GtkPrintOperationUnix *op_unix;
 274
 275   op_unix = (GtkPrintOperationUnix *) user_data;
 276
 277   if (error != NULL)
 278     {
 279       GtkWidget *edialog;
 280       edialog = gtk_message_dialog_new (op_unix->parent,
 281                                         GTK_DIALOG_DESTROY_WITH_PARENT,
 282                                         GTK_MESSAGE_ERROR,
 283                                         GTK_BUTTONS_CLOSE,
 284                                         _("Error printing") /* FIXME better text */);
 285       gtk_message_dialog_format_secondary_text (GTK_MESSAGE_DIALOG (edialog),
 286                                                 "%s", error->message);
 287       gtk_window_set_modal (GTK_WINDOW (edialog), TRUE);
 288       g_signal_connect (edialog, "response",
 289                         G_CALLBACK (gtk_widget_destroy), NULL);
 290
 291       gtk_window_present (GTK_WINDOW (edialog));
 292     }
 293
 294   op_unix->data_sent = TRUE;
 295
 296   if (op_unix->loop)
 297     g_main_loop_quit (op_unix->loop);
 298 }
 299
 300 static void
 301 unix_end_run (GtkPrintOperation *op,
 302               gboolean           wait,
 303               gboolean           cancelled)
 304 {
 305   GtkPrintOperationUnix *op_unix = op->priv->platform_data;
 306
 307   cairo_surface_finish (op_unix->surface);
 308
 309   if (cancelled)
 310     return;
 311
 312   if (wait)
 313     op_unix->loop = g_main_loop_new (NULL, FALSE);
 314
 315   /* TODO: Check for error */
 316   if (op_unix->job != NULL)
 317     gtk_print_job_send (op_unix->job,
 318                         unix_finish_send,
 319                         op_unix, NULL);
 320
 321   if (wait)
 322     {
 323       g_object_ref (op);
 324       if (!op_unix->data_sent)
 325         {
 326           GDK_THREADS_LEAVE ();
 327           g_main_loop_run (op_unix->loop);
 328           GDK_THREADS_ENTER ();
 329         }
 330       g_main_loop_unref (op_unix->loop);
 331       op_unix->loop = NULL;
 332       g_object_unref (op);
 333     }
 334 }
 335
 336 static void
 337 job_status_changed_cb (GtkPrintJob       *job,
 338                        GtkPrintOperation *op)
 339 {
 340   _gtk_print_operation_set_status (op, gtk_print_job_get_status (job), NULL);
 341 }
 342
 343
 344 static GtkWidget *
 345 get_print_dialog (GtkPrintOperation *op,
 346                   GtkWindow         *parent)
 347 {
 348   GtkPrintOperationPrivate *priv = op->priv;
 349   GtkWidget *pd, *label;
 350   GtkPageSetup *page_setup;
 351   const gchar *custom_tab_label;
 352
 353   pd = gtk_print_unix_dialog_new (NULL, parent);
 354
 355   gtk_print_unix_dialog_set_manual_capabilities (GTK_PRINT_UNIX_DIALOG (pd),
 356                                                  GTK_PRINT_CAPABILITY_PAGE_SET |
 357                                                  GTK_PRINT_CAPABILITY_COPIES |
 358                                                  GTK_PRINT_CAPABILITY_COLLATE |
 359                                                  GTK_PRINT_CAPABILITY_REVERSE |
 360                                                  GTK_PRINT_CAPABILITY_SCALE |
 361                                                  GTK_PRINT_CAPABILITY_PREVIEW);
 362
 363   if (priv->print_settings)
 364     gtk_print_unix_dialog_set_settings (GTK_PRINT_UNIX_DIALOG (pd),
 365                                         priv->print_settings);
 366   if (priv->default_page_setup)
 367     page_setup = gtk_page_setup_copy (priv->default_page_setup);
 368   else
 369     page_setup = gtk_page_setup_new ();
 370
 371   gtk_print_unix_dialog_set_page_setup (GTK_PRINT_UNIX_DIALOG (pd),
 372                                         page_setup);
 373   g_object_unref (page_setup);
 374
 375   g_signal_emit_by_name (op, "create-custom-widget",
 376                          &priv->custom_widget);
 377
 378   if (priv->custom_widget)
 379     {
 380       custom_tab_label = priv->custom_tab_label;
 381
 382       if (custom_tab_label == NULL)
 383         {
 384           custom_tab_label = g_get_application_name ();
 385           if (custom_tab_label == NULL)
 386             custom_tab_label = _("Application");
 387         }
 388
 389       label = gtk_label_new (custom_tab_label);
 390
 391       gtk_print_unix_dialog_add_custom_tab (GTK_PRINT_UNIX_DIALOG (pd),
 392                                             priv->custom_widget, label);
 393     }
 394
 395   return pd;
 396 }
 397
 398 typedef struct
 399 {
 400   GtkPrintOperation           *op;
 401   gboolean                     do_print;
 402   gboolean                     do_preview;
 403   GtkPrintOperationResult      result;
 404   GtkPrintOperationPrintFunc   print_cb;
 405   GDestroyNotify               destroy;
 406   GtkWindow                   *parent;
 407   GMainLoop                   *loop;
 408 } PrintResponseData;
 409
 410 static void
 411 print_response_data_free (gpointer data)
 412 {
 413   PrintResponseData *rdata = data;
 414
 415   g_object_unref (rdata->op);
 416   g_free (rdata);
 417 }
 418
 419 static void
 420 finish_print (PrintResponseData *rdata,
 421               GtkPrinter        *printer,
 422               GtkPageSetup      *page_setup,
 423               GtkPrintSettings  *settings)
 424 {
 425   GtkPrintOperation *op = rdata->op;
 426   GtkPrintOperationPrivate *priv = op->priv;
 427   GtkPrintJob *job;
 428
 429   if (rdata->do_print)
 430     {
 431       gtk_print_operation_set_print_settings (op, settings);
 432       priv->print_context = _gtk_print_context_new (op);
 433       _gtk_print_context_set_page_setup (priv->print_context, page_setup);
 434
 435       if (!rdata->do_preview)
 436         {
 437           GtkPrintOperationUnix *op_unix;
 438           cairo_t *cr;
 439
 440           op_unix = g_new0 (GtkPrintOperationUnix, 1);
 441           priv->platform_data = op_unix;
 442           priv->free_platform_data = (GDestroyNotify) op_unix_free;
 443           op_unix->parent = rdata->parent;
 444
 445           priv->start_page = unix_start_page;
 446           priv->end_page = unix_end_page;
 447           priv->end_run = unix_end_run;
 448
 449           job = gtk_print_job_new (priv->job_name, printer, settings, page_setup);
 450           op_unix->job = job;
 451           gtk_print_job_set_track_print_status (job, priv->track_print_status);
 452
 453           op_unix->surface = gtk_print_job_get_surface (job, &priv->error);
 454           if (op_unix->surface == NULL)
 455             {
 456               rdata->result = GTK_PRINT_OPERATION_RESULT_ERROR;
 457               rdata->do_print = FALSE;
 458               goto out;
 459             }
 460
 461           cr = cairo_create (op_unix->surface);
 462           gtk_print_context_set_cairo_context (priv->print_context, cr, 72, 72);
 463           cairo_destroy (cr);
 464
 465           _gtk_print_operation_set_status (op, gtk_print_job_get_status (job), NULL);
 466
 467           op_unix->job_status_changed_tag =
 468             g_signal_connect (job, "status-changed",
 469                               G_CALLBACK (job_status_changed_cb), op);
 470
 471           priv->print_pages = job->print_pages;
 472           priv->page_ranges = job->page_ranges;
 473           priv->num_page_ranges = job->num_page_ranges;
 474
 475           priv->manual_num_copies = job->num_copies;
 476           priv->manual_collation = job->collate;
 477           priv->manual_reverse = job->reverse;
 478           priv->manual_page_set = job->page_set;
 479           priv->manual_scale = job->scale;
 480           priv->manual_orientation = job->rotate_to_orientation;
 481         }
 482     }
 483  out:
 484   if (rdata->print_cb)
 485     rdata->print_cb (op, rdata->parent, rdata->do_print, rdata->result);
 486
 487   if (rdata->destroy)
 488     rdata->destroy (rdata);
 489 }
 490
 491 static void
 492 handle_print_response (GtkWidget *dialog,
 493                        gint       response,
 494                        gpointer   data)
 495 {
 496   GtkPrintUnixDialog *pd = GTK_PRINT_UNIX_DIALOG (dialog);
 497   PrintResponseData *rdata = data;
 498   GtkPrintSettings *settings = NULL;
 499   GtkPageSetup *page_setup = NULL;
 500   GtkPrinter *printer = NULL;
 501
 502   if (response == GTK_RESPONSE_OK)
 503     {
 504       printer = gtk_print_unix_dialog_get_selected_printer (GTK_PRINT_UNIX_DIALOG (pd));
 505
 506       rdata->result = GTK_PRINT_OPERATION_RESULT_APPLY;
 507       rdata->do_preview = FALSE;
 508       if (printer != NULL)
 509         rdata->do_print = TRUE;
 510     }
 511   else if (response == GTK_RESPONSE_APPLY)
 512     {
 513       /* print preview */
 514       rdata->result = GTK_PRINT_OPERATION_RESULT_APPLY;
 515       rdata->do_preview = TRUE;
 516       rdata->do_print = TRUE;
 517
 518       rdata->op->priv->action = GTK_PRINT_OPERATION_ACTION_PREVIEW;
 519     }
 520
 521   if (rdata->do_print)
 522     {
 523       settings = gtk_print_unix_dialog_get_settings (GTK_PRINT_UNIX_DIALOG (pd));
 524       page_setup = gtk_print_unix_dialog_get_page_setup (GTK_PRINT_UNIX_DIALOG (pd));
 525
 526       g_signal_emit_by_name (rdata->op, "custom-widget-apply", rdata->op->priv->custom_widget);
 527     }
 528
 529   finish_print (rdata, printer, page_setup, settings);
 530
 531   if (settings)
 532     g_object_unref (settings);
 533
 534   gtk_widget_destroy (GTK_WIDGET (pd));
 535
 536 }
 537
 538
 539 static void
 540 found_printer (GtkPrinter        *printer,
 541                PrintResponseData *rdata)
 542 {
 543   GtkPrintOperation *op = rdata->op;
 544   GtkPrintOperationPrivate *priv = op->priv;
 545   GtkPrintSettings *settings = NULL;
 546   GtkPageSetup *page_setup = NULL;
 547
 548   if (rdata->loop)
 549     g_main_loop_quit (rdata->loop);
 550
 551   if (printer != NULL)
 552     {
 553       rdata->result = GTK_PRINT_OPERATION_RESULT_APPLY;
 554
 555       rdata->do_print = TRUE;
 556
 557       if (priv->print_settings)
 558         settings = gtk_print_settings_copy (priv->print_settings);
 559       else
 560         settings = gtk_print_settings_new ();
 561
 562       gtk_print_settings_set_printer (settings,
 563                                       gtk_printer_get_name (printer));
 564
 565       if (priv->default_page_setup)
 566         page_setup = gtk_page_setup_copy (priv->default_page_setup);
 567       else
 568         page_setup = gtk_page_setup_new ();
 569   }
 570
 571   finish_print (rdata, printer, page_setup, settings);
 572
 573   if (settings)
 574     g_object_unref (settings);
 575
 576   if (page_setup)
 577     g_object_unref (page_setup);
 578 }
 579
 580 void
 581 _gtk_print_operation_platform_backend_run_dialog_async (GtkPrintOperation          *op,
 582                                                         gboolean                    show_dialog,
 583                                                         GtkWindow                  *parent,
 584                                                         GtkPrintOperationPrintFunc  print_cb)
 585 {
 586   GtkWidget *pd;
 587   PrintResponseData *rdata;
 588   const gchar *printer_name;
 589
 590   rdata = g_new (PrintResponseData, 1);
 591   rdata->op = g_object_ref (op);
 592   rdata->do_print = FALSE;
 593   rdata->do_preview = FALSE;
 594   rdata->result = GTK_PRINT_OPERATION_RESULT_CANCEL;
 595   rdata->print_cb = print_cb;
 596   rdata->parent = parent;
 597   rdata->loop = NULL;
 598   rdata->destroy = print_response_data_free;
 599
 600   if (show_dialog)
 601     {
 602       pd = get_print_dialog (op, parent);
 603       gtk_window_set_modal (GTK_WINDOW (pd), TRUE);
 604
 605       g_signal_connect (pd, "response",
 606                         G_CALLBACK (handle_print_response), rdata);
 607
 608       gtk_window_present (GTK_WINDOW (pd));
 609     }
 610   else
 611     {
 612       printer_name = NULL;
 613       if (op->priv->print_settings)
 614         printer_name = gtk_print_settings_get_printer (op->priv->print_settings);
 615
 616       find_printer (printer_name, (GFunc) found_printer, rdata);
 617     }
 618 }
 619
 620 static cairo_status_t
 621 write_preview (void                *closure,
 622                const unsigned char *data,
 623                unsigned int         length)
 624 {
 625   gint fd = GPOINTER_TO_INT (closure);
 626   gssize written;
 627
 628   while (length > 0)
 629     {
 630       written = write (fd, data, length);
 631
 632       if (written == -1)
 633         {
 634           if (errno == EAGAIN || errno == EINTR)
 635             continue;
 636
 637           return CAIRO_STATUS_WRITE_ERROR;
 638         }
 639
 640       data += written;
 641       length -= written;
 642     }
 643
 644   return CAIRO_STATUS_SUCCESS;
 645 }
 646
 647 static void
 648 close_preview (void *data)
 649 {
 650   gint fd = GPOINTER_TO_INT (data);
 651
 652   close (fd);
 653 }
 654
 655 cairo_surface_t *
 656 _gtk_print_operation_platform_backend_create_preview_surface (GtkPrintOperation *op,
 657                                                               GtkPageSetup      *page_setup,
 658                                                               gdouble           *dpi_x,
 659                                                               gdouble           *dpi_y,
 660                                                               gchar            **target)
 661 {
 662   gchar *filename;
 663   gint fd;
 664   GtkPaperSize *paper_size;
 665   gdouble w, h;
 666   cairo_surface_t *surface;
 667   static cairo_user_data_key_t key;
 668
 669   filename = g_build_filename (g_get_tmp_dir (), "previewXXXXXX.pdf", NULL);
 670   fd = g_mkstemp (filename);
 671   *target = filename;
 672
 673   paper_size = gtk_page_setup_get_paper_size (page_setup);
 674   w = gtk_paper_size_get_width (paper_size, GTK_UNIT_POINTS);
 675   h = gtk_paper_size_get_height (paper_size, GTK_UNIT_POINTS);
 676
 677   *dpi_x = *dpi_y = 72;
 678   surface = cairo_pdf_surface_create_for_stream (write_preview, GINT_TO_POINTER(fd), w, h);
 679
 680   cairo_surface_set_user_data (surface, &key, GINT_TO_POINTER (fd), close_preview);
 681
 682   return surface;
 683 }
 684
 685 void
 686 _gtk_print_operation_platform_backend_preview_start_page (GtkPrintOperation *op,
 687                                                           cairo_surface_t   *surface,
 688                                                           cairo_t           *cr)
 689 {
 690 }
 691
 692 void
 693 _gtk_print_operation_platform_backend_preview_end_page (GtkPrintOperation *op,
 694                                                         cairo_surface_t   *surface,
 695                                                         cairo_t           *cr)
 696 {
 697   cairo_show_page (cr);
 698 }
 699
 700 void
 701 _gtk_print_operation_platform_backend_resize_preview_surface (GtkPrintOperation *op,
 702                                                               GtkPageSetup      *page_setup,
 703                                                               cairo_surface_t   *surface)
 704 {
 705   GtkPaperSize *paper_size;
 706   gdouble w, h;
 707
 708   paper_size = gtk_page_setup_get_paper_size (page_setup);
 709   w = gtk_paper_size_get_width (paper_size, GTK_UNIT_POINTS);
 710   h = gtk_paper_size_get_height (paper_size, GTK_UNIT_POINTS);
 711   cairo_pdf_surface_set_size (surface, w, h);
 712 }
 713
 714
 715 GtkPrintOperationResult
 716 _gtk_print_operation_platform_backend_run_dialog (GtkPrintOperation *op,
 717                                                   gboolean           show_dialog,
 718                                                   GtkWindow         *parent,
 719                                                   gboolean          *do_print)
 720  {
 721   GtkWidget *pd;
 722   PrintResponseData rdata;
 723   gint response;
 724   const gchar *printer_name;
 725
 726   rdata.op = op;
 727   rdata.do_print = FALSE;
 728   rdata.do_preview = FALSE;
 729   rdata.result = GTK_PRINT_OPERATION_RESULT_CANCEL;
 730   rdata.print_cb = NULL;
 731   rdata.destroy = NULL;
 732   rdata.parent = parent;
 733   rdata.loop = NULL;
 734
 735   if (show_dialog)
 736     {
 737       pd = get_print_dialog (op, parent);
 738
 739       response = gtk_dialog_run (GTK_DIALOG (pd));
 740       handle_print_response (pd, response, &rdata);
 741     }
 742   else
 743     {
 744       printer_name = NULL;
 745       if (op->priv->print_settings)
 746         printer_name = gtk_print_settings_get_printer (op->priv->print_settings);
 747
 748       rdata.loop = g_main_loop_new (NULL, FALSE);
 749       find_printer (printer_name,
 750                     (GFunc) found_printer, &rdata);
 751
 752       GDK_THREADS_LEAVE ();
 753       g_main_loop_run (rdata.loop);
 754       GDK_THREADS_ENTER ();
 755
 756       g_main_loop_unref (rdata.loop);
 757       rdata.loop = NULL;
 758     }
 759
 760   *do_print = rdata.do_print;
 761
 762   return rdata.result;
 763 }
 764
 765
 766 typedef struct
 767 {
 768   GtkPageSetup         *page_setup;
 769   GtkPageSetupDoneFunc  done_cb;
 770   gpointer              data;
 771   GDestroyNotify        destroy;
 772 } PageSetupResponseData;
 773
 774 static void
 775 page_setup_data_free (gpointer data)
 776 {
 777   PageSetupResponseData *rdata = data;
 778
 779   if (rdata->page_setup)
 780     g_object_unref (rdata->page_setup);
 781
 782   g_free (rdata);
 783 }
 784
 785 static void
 786 handle_page_setup_response (GtkWidget *dialog,
 787                             gint       response,
 788                             gpointer   data)
 789 {
 790   GtkPageSetupUnixDialog *psd;
 791   PageSetupResponseData *rdata = data;
 792
 793   psd = GTK_PAGE_SETUP_UNIX_DIALOG (dialog);
 794   if (response == GTK_RESPONSE_OK)
 795     rdata->page_setup = gtk_page_setup_unix_dialog_get_page_setup (psd);
 796
 797   gtk_widget_destroy (dialog);
 798
 799   if (rdata->done_cb)
 800     rdata->done_cb (rdata->page_setup, rdata->data);
 801
 802   if (rdata->destroy)
 803     rdata->destroy (rdata);
 804 }
 805
 806 static GtkWidget *
 807 get_page_setup_dialog (GtkWindow        *parent,
 808                        GtkPageSetup     *page_setup,
 809                        GtkPrintSettings *settings)
 810 {
 811   GtkWidget *dialog;
 812
 813   dialog = gtk_page_setup_unix_dialog_new (NULL, parent);
 814   if (page_setup)
 815     gtk_page_setup_unix_dialog_set_page_setup (GTK_PAGE_SETUP_UNIX_DIALOG (dialog),
 816                                                page_setup);
 817   gtk_page_setup_unix_dialog_set_print_settings (GTK_PAGE_SETUP_UNIX_DIALOG (dialog),
 818                                                  settings);
 819
 820   return dialog;
 821 }
 822
 823 /**
 824  * gtk_print_run_page_setup_dialog:
 825  * @parent: transient parent, or %NULL
 826  * @page_setup: an existing #GtkPageSetup, or %NULL
 827  * @settings: a #GtkPrintSettings
 828  *
 829  * Runs a page setup dialog, letting the user modify the values from
 830  * @page_setup. If the user cancels the dialog, the returned #GtkPageSetup
 831  * is identical to the passed in @page_setup, otherwise it contains the
 832  * modifications done in the dialog.
 833  *
 834  * Note that this function may use a recursive mainloop to show the page
 835  * setup dialog. See gtk_print_run_page_setup_dialog_async() if this is
 836  * a problem.
 837  *
 838  * Return value: a new #GtkPageSetup
 839  *
 840  * Since: 2.10
 841  */
 842 GtkPageSetup *
 843 gtk_print_run_page_setup_dialog (GtkWindow        *parent,
 844                                  GtkPageSetup     *page_setup,
 845                                  GtkPrintSettings *settings)
 846 {
 847   GtkWidget *dialog;
 848   gint response;
 849   PageSetupResponseData rdata;
 850
 851   rdata.page_setup = NULL;
 852   rdata.done_cb = NULL;
 853   rdata.data = NULL;
 854   rdata.destroy = NULL;
 855
 856   dialog = get_page_setup_dialog (parent, page_setup, settings);
 857   response = gtk_dialog_run (GTK_DIALOG (dialog));
 858   handle_page_setup_response (dialog, response, &rdata);
 859
 860   if (rdata.page_setup)
 861     return rdata.page_setup;
 862   else if (page_setup)
 863     return gtk_page_setup_copy (page_setup);
 864   else
 865     return gtk_page_setup_new ();
 866 }
 867
 868 /**
 869  * gtk_print_run_page_setup_dialog_async:
 870  * @parent: transient parent, or %NULL
 871  * @page_setup: an existing #GtkPageSetup, or %NULL
 872  * @settings: a #GtkPrintSettings
 873  * @done_cb: a function to call when the user saves the modified page setup
 874  * @data: user data to pass to @done_cb
 875  *
 876  * Runs a page setup dialog, letting the user modify the values from @page_setup.
 877  *
 878  * In contrast to gtk_print_run_page_setup_dialog(), this function  returns after
 879  * showing the page setup dialog on platforms that support this, and calls @done_cb
 880  * from a signal handler for the ::response signal of the dialog.
 881  *
 882  * Since: 2.10
 883  */
 884 void
 885 gtk_print_run_page_setup_dialog_async (GtkWindow            *parent,
 886                                        GtkPageSetup         *page_setup,
 887                                        GtkPrintSettings     *settings,
 888                                        GtkPageSetupDoneFunc  done_cb,
 889                                        gpointer              data)
 890 {
 891   GtkWidget *dialog;
 892   PageSetupResponseData *rdata;
 893
 894   dialog = get_page_setup_dialog (parent, page_setup, settings);
 895   gtk_window_set_modal (GTK_WINDOW (dialog), TRUE);
 896
 897   rdata = g_new (PageSetupResponseData, 1);
 898   rdata->page_setup = NULL;
 899   rdata->done_cb = done_cb;
 900   rdata->data = data;
 901   rdata->destroy = page_setup_data_free;
 902
 903   g_signal_connect (dialog, "response",
 904                     G_CALLBACK (handle_page_setup_response), rdata);
 905
 906   gtk_window_present (GTK_WINDOW (dialog));
 907  }
 908
 909 struct _PrinterFinder
 910 {
 911   gboolean found_printer;
 912   GFunc func;
 913   gpointer data;
 914   gchar *printer_name;
 915   GList *backends;
 916   guint timeout_tag;
 917   GtkPrinter *printer;
 918   GtkPrinter *default_printer;
 919   GtkPrinter *first_printer;
 920 };
 921
 922 static gboolean
 923 find_printer_idle (gpointer data)
 924 {
 925   PrinterFinder *finder = data;
 926   GtkPrinter *printer;
 927
 928   if (finder->printer != NULL)
 929     printer = finder->printer;
 930   else if (finder->default_printer != NULL)
 931     printer = finder->default_printer;
 932   else if (finder->first_printer != NULL)
 933     printer = finder->first_printer;
 934   else
 935     printer = NULL;
 936
 937   finder->func (printer, finder->data);
 938
 939   printer_finder_free (finder);
 940
 941   return FALSE;
 942 }
 943
 944 static void
 945 printer_added_cb (GtkPrintBackend *backend,
 946                   GtkPrinter      *printer,
 947                   PrinterFinder   *finder)
 948 {
 949   if (finder->found_printer)
 950     return;
 951
 952   /* FIXME this skips "Print to PDF" - is this intentional ? */
 953   if (gtk_printer_is_virtual (printer))
 954     return;
 955
 956   if (finder->printer_name != NULL &&
 957       strcmp (gtk_printer_get_name (printer), finder->printer_name) == 0)
 958     {
 959       finder->printer = g_object_ref (printer);
 960       finder->found_printer = TRUE;
 961     }
 962   else if (finder->default_printer == NULL &&
 963            gtk_printer_is_default (printer))
 964     {
 965       finder->default_printer = g_object_ref (printer);
 966       if (finder->printer_name == NULL)
 967         finder->found_printer = TRUE;
 968     }
 969   else
 970     if (finder->first_printer == NULL)
 971       finder->first_printer = g_object_ref (printer);
 972
 973   if (finder->found_printer)
 974     g_idle_add (find_printer_idle, finder);
 975 }
 976
 977 static void
 978 printer_list_done_cb (GtkPrintBackend *backend,
 979                       PrinterFinder   *finder)
 980 {
 981   finder->backends = g_list_remove (finder->backends, backend);
 982
 983   g_signal_handlers_disconnect_by_func (backend, printer_added_cb, finder);
 984   g_signal_handlers_disconnect_by_func (backend, printer_list_done_cb, finder);
 985
 986   gtk_print_backend_destroy (backend);
 987   g_object_unref (backend);
 988
 989   if (finder->backends == NULL && !finder->found_printer)
 990     g_idle_add (find_printer_idle, finder);
 991 }
 992
 993 static void
 994 find_printer_init (PrinterFinder   *finder,
 995                    GtkPrintBackend *backend)
 996 {
 997   GList *list;
 998   GList *node;
 999
1000   list = gtk_print_backend_get_printer_list (backend);
1001
1002   node = list;
1003   while (node != NULL)
1004     {
1005       printer_added_cb (backend, node->data, finder);
1006       node = node->next;
1007
1008       if (finder->found_printer)
1009         break;
1010     }
1011
1012   g_list_free (list);
1013
1014   if (gtk_print_backend_printer_list_is_done (backend))
1015     {
1016       finder->backends = g_list_remove (finder->backends, backend);
1017       gtk_print_backend_destroy (backend);
1018       g_object_unref (backend);
1019     }
1020   else
1021     {
1022       g_signal_connect (backend, "printer-added",
1023                         (GCallback) printer_added_cb,
1024                         finder);
1025       g_signal_connect (backend, "printer-list-done",
1026                         (GCallback) printer_list_done_cb,
1027                         finder);
1028     }
1029
1030 }
1031
1032 static void
1033 printer_finder_free (PrinterFinder *finder)
1034 {
1035   GList *l;
1036
1037   g_free (finder->printer_name);
1038
1039   if (finder->printer)
1040     g_object_unref (finder->printer);
1041
1042   if (finder->default_printer)
1043     g_object_unref (finder->default_printer);
1044
1045   if (finder->first_printer)
1046     g_object_unref (finder->first_printer);
1047
1048   for (l = finder->backends; l != NULL; l = l->next)
1049     {
1050       GtkPrintBackend *backend = l->data;
1051       g_signal_handlers_disconnect_by_func (backend, printer_added_cb, finder);
1052       g_signal_handlers_disconnect_by_func (backend, printer_list_done_cb, finder);
1053       gtk_print_backend_destroy (backend);
1054       g_object_unref (backend);
1055     }
1056
1057   g_list_free (finder->backends);
1058
1059   g_free (finder);
1060 }
1061
1062 static void
1063 find_printer (const gchar *printer,
1064               GFunc        func,
1065               gpointer     data)
1066 {
1067   GList *node, *next;
1068   PrinterFinder *finder;
1069
1070   finder = g_new0 (PrinterFinder, 1);
1071
1072   finder->printer_name = g_strdup (printer);
1073   finder->func = func;
1074   finder->data = data;
1075
1076   finder->backends = NULL;
1077   if (g_module_supported ())
1078     finder->backends = gtk_print_backend_load_modules ();
1079
1080   for (node = finder->backends; !finder->found_printer && node != NULL; node = next)
1081     {
1082       next = node->next;
1083       find_printer_init (finder, GTK_PRINT_BACKEND (node->data));
1084     }
1085
1086   if (finder->backends == NULL && !finder->found_printer)
1087     g_idle_add (find_printer_idle, finder);
1088 }
1089
1090 #define __GTK_PRINT_OPERATION_UNIX_C__
1091 #include "gtkaliasdef.c"