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   close (fd);
 216
 217   settings = gtk_settings_get_for_screen (screen);
 218   g_object_get (settings, "gtk-print-preview-command", &preview_cmd, NULL);
 219
 220   quoted_filename = g_shell_quote (filename);
 221   quoted_settings_filename = g_shell_quote (settings_filename);
 222   cmd = shell_command_substitute_file (preview_cmd, quoted_filename, quoted_settings_filename, &filename_used, &settings_used);
 223   g_shell_parse_argv (cmd, &argc, &argv, &error);
 224
 225   g_free (preview_cmd);
 226   g_free (quoted_filename);
 227   g_free (quoted_settings_filename);
 228   g_free (cmd);
 229
 230   if (error != NULL)
 231     goto out;
 232
 233   gdk_spawn_on_screen (screen, NULL, argv, NULL, G_SPAWN_SEARCH_PATH, NULL, NULL, NULL, &error);
 234
 235   g_strfreev (argv);
 236
 237  out:
 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       gtk_window_set_modal (GTK_WINDOW (edialog), TRUE);
 249       g_signal_connect (edialog, "response",
 250                         G_CALLBACK (gtk_widget_destroy), NULL);
 251
 252       gtk_window_present (GTK_WINDOW (edialog));
 253
 254       g_error_free (error);
 255
 256       filename_used = FALSE;
 257       settings_used = FALSE;
 258    }
 259
 260   if (!filename_used)
 261     g_unlink (filename);
 262
 263   if (!settings_used)
 264     g_unlink (settings_filename);
 265
 266   g_free (settings_filename);
 267 }
 268
 269 static void
 270 unix_finish_send  (GtkPrintJob *job,
 271                    gpointer     user_data,
 272                    GError      *error)
 273 {
 274   GtkPrintOperationUnix *op_unix;
 275
 276   op_unix = (GtkPrintOperationUnix *) user_data;
 277
 278   if (error != NULL)
 279     {
 280       GtkWidget *edialog;
 281       edialog = gtk_message_dialog_new (op_unix->parent,
 282                                         GTK_DIALOG_DESTROY_WITH_PARENT,
 283                                         GTK_MESSAGE_ERROR,
 284                                         GTK_BUTTONS_CLOSE,
 285                                         _("Error printing") /* FIXME better text */);
 286       gtk_message_dialog_format_secondary_text (GTK_MESSAGE_DIALOG (edialog),
 287                                                 "%s", error->message);
 288       gtk_window_set_modal (GTK_WINDOW (edialog), TRUE);
 289       g_signal_connect (edialog, "response",
 290                         G_CALLBACK (gtk_widget_destroy), NULL);
 291
 292       gtk_window_present (GTK_WINDOW (edialog));
 293     }
 294
 295   op_unix->data_sent = TRUE;
 296
 297   if (op_unix->loop)
 298     g_main_loop_quit (op_unix->loop);
 299 }
 300
 301 static void
 302 unix_end_run (GtkPrintOperation *op,
 303               gboolean           wait,
 304               gboolean           cancelled)
 305 {
 306   GtkPrintOperationUnix *op_unix = op->priv->platform_data;
 307
 308   cairo_surface_finish (op_unix->surface);
 309
 310   if (cancelled)
 311     return;
 312
 313   if (wait)
 314     op_unix->loop = g_main_loop_new (NULL, FALSE);
 315
 316   /* TODO: Check for error */
 317   if (op_unix->job != NULL)
 318     gtk_print_job_send (op_unix->job,
 319                         unix_finish_send,
 320                         op_unix, NULL);
 321
 322   if (wait)
 323     {
 324       g_object_ref (op);
 325       if (!op_unix->data_sent)
 326         {
 327           GDK_THREADS_LEAVE ();
 328           g_main_loop_run (op_unix->loop);
 329           GDK_THREADS_ENTER ();
 330         }
 331       g_main_loop_unref (op_unix->loop);
 332       op_unix->loop = NULL;
 333       g_object_unref (op);
 334     }
 335 }
 336
 337 static void
 338 job_status_changed_cb (GtkPrintJob       *job,
 339                        GtkPrintOperation *op)
 340 {
 341   _gtk_print_operation_set_status (op, gtk_print_job_get_status (job), NULL);
 342 }
 343
 344
 345 static GtkWidget *
 346 get_print_dialog (GtkPrintOperation *op,
 347                   GtkWindow         *parent)
 348 {
 349   GtkPrintOperationPrivate *priv = op->priv;
 350   GtkWidget *pd, *label;
 351   GtkPageSetup *page_setup;
 352   const gchar *custom_tab_label;
 353
 354   pd = gtk_print_unix_dialog_new (NULL, parent);
 355
 356   gtk_print_unix_dialog_set_manual_capabilities (GTK_PRINT_UNIX_DIALOG (pd),
 357                                                  GTK_PRINT_CAPABILITY_PAGE_SET |
 358                                                  GTK_PRINT_CAPABILITY_COPIES |
 359                                                  GTK_PRINT_CAPABILITY_COLLATE |
 360                                                  GTK_PRINT_CAPABILITY_REVERSE |
 361                                                  GTK_PRINT_CAPABILITY_SCALE |
 362                                                  GTK_PRINT_CAPABILITY_PREVIEW);
 363
 364   if (priv->print_settings)
 365     gtk_print_unix_dialog_set_settings (GTK_PRINT_UNIX_DIALOG (pd),
 366                                         priv->print_settings);
 367   if (priv->default_page_setup)
 368     page_setup = gtk_page_setup_copy (priv->default_page_setup);
 369   else
 370     page_setup = gtk_page_setup_new ();
 371
 372   gtk_print_unix_dialog_set_page_setup (GTK_PRINT_UNIX_DIALOG (pd),
 373                                         page_setup);
 374   g_object_unref (page_setup);
 375
 376   g_signal_emit_by_name (op, "create-custom-widget",
 377                          &priv->custom_widget);
 378
 379   if (priv->custom_widget)
 380     {
 381       custom_tab_label = priv->custom_tab_label;
 382
 383       if (custom_tab_label == NULL)
 384         {
 385           custom_tab_label = g_get_application_name ();
 386           if (custom_tab_label == NULL)
 387             custom_tab_label = _("Application");
 388         }
 389
 390       label = gtk_label_new (custom_tab_label);
 391
 392       gtk_print_unix_dialog_add_custom_tab (GTK_PRINT_UNIX_DIALOG (pd),
 393                                             priv->custom_widget, label);
 394     }
 395
 396   return pd;
 397 }
 398
 399 typedef struct
 400 {
 401   GtkPrintOperation           *op;
 402   gboolean                     do_print;
 403   gboolean                     do_preview;
 404   GtkPrintOperationResult      result;
 405   GtkPrintOperationPrintFunc   print_cb;
 406   GDestroyNotify               destroy;
 407   GtkWindow                   *parent;
 408   GMainLoop                   *loop;
 409 } PrintResponseData;
 410
 411 static void
 412 print_response_data_free (gpointer data)
 413 {
 414   PrintResponseData *rdata = data;
 415
 416   g_object_unref (rdata->op);
 417   g_free (rdata);
 418 }
 419
 420 static void
 421 finish_print (PrintResponseData *rdata,
 422               GtkPrinter        *printer,
 423               GtkPageSetup      *page_setup,
 424               GtkPrintSettings  *settings)
 425 {
 426   GtkPrintOperation *op = rdata->op;
 427   GtkPrintOperationPrivate *priv = op->priv;
 428   GtkPrintJob *job;
 429
 430   if (rdata->do_print)
 431     {
 432       gtk_print_operation_set_print_settings (op, settings);
 433       priv->print_context = _gtk_print_context_new (op);
 434       _gtk_print_context_set_page_setup (priv->print_context, page_setup);
 435
 436       if (!rdata->do_preview)
 437         {
 438           GtkPrintOperationUnix *op_unix;
 439           cairo_t *cr;
 440
 441           op_unix = g_new0 (GtkPrintOperationUnix, 1);
 442           priv->platform_data = op_unix;
 443           priv->free_platform_data = (GDestroyNotify) op_unix_free;
 444           op_unix->parent = rdata->parent;
 445
 446           priv->start_page = unix_start_page;
 447           priv->end_page = unix_end_page;
 448           priv->end_run = unix_end_run;
 449
 450           job = gtk_print_job_new (priv->job_name, printer, settings, page_setup);
 451           op_unix->job = job;
 452           gtk_print_job_set_track_print_status (job, priv->track_print_status);
 453
 454           op_unix->surface = gtk_print_job_get_surface (job, &priv->error);
 455           if (op_unix->surface == NULL)
 456             {
 457               rdata->result = GTK_PRINT_OPERATION_RESULT_ERROR;
 458               rdata->do_print = FALSE;
 459               goto out;
 460             }
 461
 462           cr = cairo_create (op_unix->surface);
 463           gtk_print_context_set_cairo_context (priv->print_context, cr, 72, 72);
 464           cairo_destroy (cr);
 465
 466           _gtk_print_operation_set_status (op, gtk_print_job_get_status (job), NULL);
 467
 468           op_unix->job_status_changed_tag =
 469             g_signal_connect (job, "status-changed",
 470                               G_CALLBACK (job_status_changed_cb), op);
 471
 472           priv->print_pages = job->print_pages;
 473           priv->page_ranges = job->page_ranges;
 474           priv->num_page_ranges = job->num_page_ranges;
 475
 476           priv->manual_num_copies = job->num_copies;
 477           priv->manual_collation = job->collate;
 478           priv->manual_reverse = job->reverse;
 479           priv->manual_page_set = job->page_set;
 480           priv->manual_scale = job->scale;
 481           priv->manual_orientation = job->rotate_to_orientation;
 482         }
 483     }
 484  out:
 485   if (rdata->print_cb)
 486     rdata->print_cb (op, rdata->parent, rdata->do_print, rdata->result);
 487
 488   if (rdata->destroy)
 489     rdata->destroy (rdata);
 490 }
 491
 492 static void
 493 handle_print_response (GtkWidget *dialog,
 494                        gint       response,
 495                        gpointer   data)
 496 {
 497   GtkPrintUnixDialog *pd = GTK_PRINT_UNIX_DIALOG (dialog);
 498   PrintResponseData *rdata = data;
 499   GtkPrintSettings *settings = NULL;
 500   GtkPageSetup *page_setup = NULL;
 501   GtkPrinter *printer = NULL;
 502
 503   if (response == GTK_RESPONSE_OK)
 504     {
 505       printer = gtk_print_unix_dialog_get_selected_printer (GTK_PRINT_UNIX_DIALOG (pd));
 506
 507       rdata->result = GTK_PRINT_OPERATION_RESULT_APPLY;
 508       rdata->do_preview = FALSE;
 509       if (printer != NULL)
 510         rdata->do_print = TRUE;
 511     }
 512   else if (response == GTK_RESPONSE_APPLY)
 513     {
 514       /* print preview */
 515       rdata->result = GTK_PRINT_OPERATION_RESULT_APPLY;
 516       rdata->do_preview = TRUE;
 517       rdata->do_print = TRUE;
 518
 519       rdata->op->priv->action = GTK_PRINT_OPERATION_ACTION_PREVIEW;
 520     }
 521
 522   if (rdata->do_print)
 523     {
 524       settings = gtk_print_unix_dialog_get_settings (GTK_PRINT_UNIX_DIALOG (pd));
 525       page_setup = gtk_print_unix_dialog_get_page_setup (GTK_PRINT_UNIX_DIALOG (pd));
 526
 527       g_signal_emit_by_name (rdata->op, "custom-widget-apply", rdata->op->priv->custom_widget);
 528     }
 529
 530   finish_print (rdata, printer, page_setup, settings);
 531
 532   if (settings)
 533     g_object_unref (settings);
 534
 535   gtk_widget_destroy (GTK_WIDGET (pd));
 536
 537 }
 538
 539
 540 static void
 541 found_printer (GtkPrinter        *printer,
 542                PrintResponseData *rdata)
 543 {
 544   GtkPrintOperation *op = rdata->op;
 545   GtkPrintOperationPrivate *priv = op->priv;
 546   GtkPrintSettings *settings = NULL;
 547   GtkPageSetup *page_setup = NULL;
 548
 549   if (rdata->loop)
 550     g_main_loop_quit (rdata->loop);
 551
 552   if (printer != NULL)
 553     {
 554       rdata->result = GTK_PRINT_OPERATION_RESULT_APPLY;
 555
 556       rdata->do_print = TRUE;
 557
 558       if (priv->print_settings)
 559         settings = gtk_print_settings_copy (priv->print_settings);
 560       else
 561         settings = gtk_print_settings_new ();
 562
 563       gtk_print_settings_set_printer (settings,
 564                                       gtk_printer_get_name (printer));
 565
 566       if (priv->default_page_setup)
 567         page_setup = gtk_page_setup_copy (priv->default_page_setup);
 568       else
 569         page_setup = gtk_page_setup_new ();
 570   }
 571
 572   finish_print (rdata, printer, page_setup, settings);
 573
 574   if (settings)
 575     g_object_unref (settings);
 576
 577   if (page_setup)
 578     g_object_unref (page_setup);
 579 }
 580
 581 void
 582 _gtk_print_operation_platform_backend_run_dialog_async (GtkPrintOperation          *op,
 583                                                         gboolean                    show_dialog,
 584                                                         GtkWindow                  *parent,
 585                                                         GtkPrintOperationPrintFunc  print_cb)
 586 {
 587   GtkWidget *pd;
 588   PrintResponseData *rdata;
 589   const gchar *printer_name;
 590
 591   rdata = g_new (PrintResponseData, 1);
 592   rdata->op = g_object_ref (op);
 593   rdata->do_print = FALSE;
 594   rdata->do_preview = FALSE;
 595   rdata->result = GTK_PRINT_OPERATION_RESULT_CANCEL;
 596   rdata->print_cb = print_cb;
 597   rdata->parent = parent;
 598   rdata->loop = NULL;
 599   rdata->destroy = print_response_data_free;
 600
 601   if (show_dialog)
 602     {
 603       pd = get_print_dialog (op, parent);
 604       gtk_window_set_modal (GTK_WINDOW (pd), TRUE);
 605
 606       g_signal_connect (pd, "response",
 607                         G_CALLBACK (handle_print_response), rdata);
 608
 609       gtk_window_present (GTK_WINDOW (pd));
 610     }
 611   else
 612     {
 613       printer_name = NULL;
 614       if (op->priv->print_settings)
 615         printer_name = gtk_print_settings_get_printer (op->priv->print_settings);
 616
 617       find_printer (printer_name, (GFunc) found_printer, rdata);
 618     }
 619 }
 620
 621 static cairo_status_t
 622 write_preview (void                *closure,
 623                const unsigned char *data,
 624                unsigned int         length)
 625 {
 626   gint fd = GPOINTER_TO_INT (closure);
 627   gssize written;
 628
 629   while (length > 0)
 630     {
 631       written = write (fd, data, length);
 632
 633       if (written == -1)
 634         {
 635           if (errno == EAGAIN || errno == EINTR)
 636             continue;
 637
 638           return CAIRO_STATUS_WRITE_ERROR;
 639         }
 640
 641       data += written;
 642       length -= written;
 643     }
 644
 645   return CAIRO_STATUS_SUCCESS;
 646 }
 647
 648 static void
 649 close_preview (void *data)
 650 {
 651   gint fd = GPOINTER_TO_INT (data);
 652
 653   close (fd);
 654 }
 655
 656 cairo_surface_t *
 657 _gtk_print_operation_platform_backend_create_preview_surface (GtkPrintOperation *op,
 658                                                               GtkPageSetup      *page_setup,
 659                                                               gdouble           *dpi_x,
 660                                                               gdouble           *dpi_y,
 661                                                               gchar            **target)
 662 {
 663   gchar *filename;
 664   gint fd;
 665   GtkPaperSize *paper_size;
 666   gdouble w, h;
 667   cairo_surface_t *surface;
 668   static cairo_user_data_key_t key;
 669
 670   filename = g_build_filename (g_get_tmp_dir (), "previewXXXXXX.pdf", NULL);
 671   fd = g_mkstemp (filename);
 672   *target = filename;
 673
 674   paper_size = gtk_page_setup_get_paper_size (page_setup);
 675   w = gtk_paper_size_get_width (paper_size, GTK_UNIT_POINTS);
 676   h = gtk_paper_size_get_height (paper_size, GTK_UNIT_POINTS);
 677
 678   *dpi_x = *dpi_y = 72;
 679   surface = cairo_pdf_surface_create_for_stream (write_preview, GINT_TO_POINTER(fd), w, h);
 680
 681   cairo_surface_set_user_data (surface, &key, GINT_TO_POINTER (fd), close_preview);
 682
 683   return surface;
 684 }
 685
 686 void
 687 _gtk_print_operation_platform_backend_preview_start_page (GtkPrintOperation *op,
 688                                                           cairo_surface_t   *surface,
 689                                                           cairo_t           *cr)
 690 {
 691 }
 692
 693 void
 694 _gtk_print_operation_platform_backend_preview_end_page (GtkPrintOperation *op,
 695                                                         cairo_surface_t   *surface,
 696                                                         cairo_t           *cr)
 697 {
 698   cairo_show_page (cr);
 699 }
 700
 701 void
 702 _gtk_print_operation_platform_backend_resize_preview_surface (GtkPrintOperation *op,
 703                                                               GtkPageSetup      *page_setup,
 704                                                               cairo_surface_t   *surface)
 705 {
 706   GtkPaperSize *paper_size;
 707   gdouble w, h;
 708
 709   paper_size = gtk_page_setup_get_paper_size (page_setup);
 710   w = gtk_paper_size_get_width (paper_size, GTK_UNIT_POINTS);
 711   h = gtk_paper_size_get_height (paper_size, GTK_UNIT_POINTS);
 712   cairo_pdf_surface_set_size (surface, w, h);
 713 }
 714
 715
 716 GtkPrintOperationResult
 717 _gtk_print_operation_platform_backend_run_dialog (GtkPrintOperation *op,
 718                                                   gboolean           show_dialog,
 719                                                   GtkWindow         *parent,
 720                                                   gboolean          *do_print)
 721  {
 722   GtkWidget *pd;
 723   PrintResponseData rdata;
 724   gint response;
 725   const gchar *printer_name;
 726
 727   rdata.op = op;
 728   rdata.do_print = FALSE;
 729   rdata.do_preview = FALSE;
 730   rdata.result = GTK_PRINT_OPERATION_RESULT_CANCEL;
 731   rdata.print_cb = NULL;
 732   rdata.destroy = NULL;
 733   rdata.parent = parent;
 734   rdata.loop = NULL;
 735
 736   if (show_dialog)
 737     {
 738       pd = get_print_dialog (op, parent);
 739
 740       response = gtk_dialog_run (GTK_DIALOG (pd));
 741       handle_print_response (pd, response, &rdata);
 742     }
 743   else
 744     {
 745       printer_name = NULL;
 746       if (op->priv->print_settings)
 747         printer_name = gtk_print_settings_get_printer (op->priv->print_settings);
 748
 749       rdata.loop = g_main_loop_new (NULL, FALSE);
 750       find_printer (printer_name,
 751                     (GFunc) found_printer, &rdata);
 752
 753       GDK_THREADS_LEAVE ();
 754       g_main_loop_run (rdata.loop);
 755       GDK_THREADS_ENTER ();
 756
 757       g_main_loop_unref (rdata.loop);
 758       rdata.loop = NULL;
 759     }
 760
 761   *do_print = rdata.do_print;
 762
 763   return rdata.result;
 764 }
 765
 766
 767 typedef struct
 768 {
 769   GtkPageSetup         *page_setup;
 770   GtkPageSetupDoneFunc  done_cb;
 771   gpointer              data;
 772   GDestroyNotify        destroy;
 773 } PageSetupResponseData;
 774
 775 static void
 776 page_setup_data_free (gpointer data)
 777 {
 778   PageSetupResponseData *rdata = data;
 779
 780   if (rdata->page_setup)
 781     g_object_unref (rdata->page_setup);
 782
 783   g_free (rdata);
 784 }
 785
 786 static void
 787 handle_page_setup_response (GtkWidget *dialog,
 788                             gint       response,
 789                             gpointer   data)
 790 {
 791   GtkPageSetupUnixDialog *psd;
 792   PageSetupResponseData *rdata = data;
 793
 794   psd = GTK_PAGE_SETUP_UNIX_DIALOG (dialog);
 795   if (response == GTK_RESPONSE_OK)
 796     rdata->page_setup = gtk_page_setup_unix_dialog_get_page_setup (psd);
 797
 798   gtk_widget_destroy (dialog);
 799
 800   if (rdata->done_cb)
 801     rdata->done_cb (rdata->page_setup, rdata->data);
 802
 803   if (rdata->destroy)
 804     rdata->destroy (rdata);
 805 }
 806
 807 static GtkWidget *
 808 get_page_setup_dialog (GtkWindow        *parent,
 809                        GtkPageSetup     *page_setup,
 810                        GtkPrintSettings *settings)
 811 {
 812   GtkWidget *dialog;
 813
 814   dialog = gtk_page_setup_unix_dialog_new (NULL, parent);
 815   if (page_setup)
 816     gtk_page_setup_unix_dialog_set_page_setup (GTK_PAGE_SETUP_UNIX_DIALOG (dialog),
 817                                                page_setup);
 818   gtk_page_setup_unix_dialog_set_print_settings (GTK_PAGE_SETUP_UNIX_DIALOG (dialog),
 819                                                  settings);
 820
 821   return dialog;
 822 }
 823
 824 /**
 825  * gtk_print_run_page_setup_dialog:
 826  * @parent: transient parent, or %NULL
 827  * @page_setup: an existing #GtkPageSetup, or %NULL
 828  * @settings: a #GtkPrintSettings
 829  *
 830  * Runs a page setup dialog, letting the user modify the values from
 831  * @page_setup. If the user cancels the dialog, the returned #GtkPageSetup
 832  * is identical to the passed in @page_setup, otherwise it contains the
 833  * modifications done in the dialog.
 834  *
 835  * Note that this function may use a recursive mainloop to show the page
 836  * setup dialog. See gtk_print_run_page_setup_dialog_async() if this is
 837  * a problem.
 838  *
 839  * Return value: a new #GtkPageSetup
 840  *
 841  * Since: 2.10
 842  */
 843 GtkPageSetup *
 844 gtk_print_run_page_setup_dialog (GtkWindow        *parent,
 845                                  GtkPageSetup     *page_setup,
 846                                  GtkPrintSettings *settings)
 847 {
 848   GtkWidget *dialog;
 849   gint response;
 850   PageSetupResponseData rdata;
 851
 852   rdata.page_setup = NULL;
 853   rdata.done_cb = NULL;
 854   rdata.data = NULL;
 855   rdata.destroy = NULL;
 856
 857   dialog = get_page_setup_dialog (parent, page_setup, settings);
 858   response = gtk_dialog_run (GTK_DIALOG (dialog));
 859   handle_page_setup_response (dialog, response, &rdata);
 860
 861   if (rdata.page_setup)
 862     return rdata.page_setup;
 863   else if (page_setup)
 864     return gtk_page_setup_copy (page_setup);
 865   else
 866     return gtk_page_setup_new ();
 867 }
 868
 869 /**
 870  * gtk_print_run_page_setup_dialog_async:
 871  * @parent: transient parent, or %NULL
 872  * @page_setup: an existing #GtkPageSetup, or %NULL
 873  * @settings: a #GtkPrintSettings
 874  * @done_cb: a function to call when the user saves the modified page setup
 875  * @data: user data to pass to @done_cb
 876  *
 877  * Runs a page setup dialog, letting the user modify the values from @page_setup.
 878  *
 879  * In contrast to gtk_print_run_page_setup_dialog(), this function  returns after
 880  * showing the page setup dialog on platforms that support this, and calls @done_cb
 881  * from a signal handler for the ::response signal of the dialog.
 882  *
 883  * Since: 2.10
 884  */
 885 void
 886 gtk_print_run_page_setup_dialog_async (GtkWindow            *parent,
 887                                        GtkPageSetup         *page_setup,
 888                                        GtkPrintSettings     *settings,
 889                                        GtkPageSetupDoneFunc  done_cb,
 890                                        gpointer              data)
 891 {
 892   GtkWidget *dialog;
 893   PageSetupResponseData *rdata;
 894
 895   dialog = get_page_setup_dialog (parent, page_setup, settings);
 896   gtk_window_set_modal (GTK_WINDOW (dialog), TRUE);
 897
 898   rdata = g_new (PageSetupResponseData, 1);
 899   rdata->page_setup = NULL;
 900   rdata->done_cb = done_cb;
 901   rdata->data = data;
 902   rdata->destroy = page_setup_data_free;
 903
 904   g_signal_connect (dialog, "response",
 905                     G_CALLBACK (handle_page_setup_response), rdata);
 906
 907   gtk_window_present (GTK_WINDOW (dialog));
 908  }
 909
 910 struct _PrinterFinder
 911 {
 912   gboolean found_printer;
 913   GFunc func;
 914   gpointer data;
 915   gchar *printer_name;
 916   GList *backends;
 917   guint timeout_tag;
 918   GtkPrinter *printer;
 919   GtkPrinter *default_printer;
 920   GtkPrinter *first_printer;
 921 };
 922
 923 static gboolean
 924 find_printer_idle (gpointer data)
 925 {
 926   PrinterFinder *finder = data;
 927   GtkPrinter *printer;
 928
 929   if (finder->printer != NULL)
 930     printer = finder->printer;
 931   else if (finder->default_printer != NULL)
 932     printer = finder->default_printer;
 933   else if (finder->first_printer != NULL)
 934     printer = finder->first_printer;
 935   else
 936     printer = NULL;
 937
 938   finder->func (printer, finder->data);
 939
 940   printer_finder_free (finder);
 941
 942   return FALSE;
 943 }
 944
 945 static void
 946 printer_added_cb (GtkPrintBackend *backend,
 947                   GtkPrinter      *printer,
 948                   PrinterFinder   *finder)
 949 {
 950   if (finder->found_printer)
 951     return;
 952
 953   /* FIXME this skips "Print to PDF" - is this intentional ? */
 954   if (gtk_printer_is_virtual (printer))
 955     return;
 956
 957   if (finder->printer_name != NULL &&
 958       strcmp (gtk_printer_get_name (printer), finder->printer_name) == 0)
 959     {
 960       finder->printer = g_object_ref (printer);
 961       finder->found_printer = TRUE;
 962     }
 963   else if (finder->default_printer == NULL &&
 964            gtk_printer_is_default (printer))
 965     {
 966       finder->default_printer = g_object_ref (printer);
 967       if (finder->printer_name == NULL)
 968         finder->found_printer = TRUE;
 969     }
 970   else
 971     if (finder->first_printer == NULL)
 972       finder->first_printer = g_object_ref (printer);
 973
 974   if (finder->found_printer)
 975     g_idle_add (find_printer_idle, finder);
 976 }
 977
 978 static void
 979 printer_list_done_cb (GtkPrintBackend *backend,
 980                       PrinterFinder   *finder)
 981 {
 982   finder->backends = g_list_remove (finder->backends, backend);
 983
 984   g_signal_handlers_disconnect_by_func (backend, printer_added_cb, finder);
 985   g_signal_handlers_disconnect_by_func (backend, printer_list_done_cb, finder);
 986
 987   gtk_print_backend_destroy (backend);
 988   g_object_unref (backend);
 989
 990   if (finder->backends == NULL && !finder->found_printer)
 991     g_idle_add (find_printer_idle, finder);
 992 }
 993
 994 static void
 995 find_printer_init (PrinterFinder   *finder,
 996                    GtkPrintBackend *backend)
 997 {
 998   GList *list;
 999   GList *node;
1000
1001   list = gtk_print_backend_get_printer_list (backend);
1002
1003   node = list;
1004   while (node != NULL)
1005     {
1006       printer_added_cb (backend, node->data, finder);
1007       node = node->next;
1008
1009       if (finder->found_printer)
1010         break;
1011     }
1012
1013   g_list_free (list);
1014
1015   if (gtk_print_backend_printer_list_is_done (backend))
1016     {
1017       finder->backends = g_list_remove (finder->backends, backend);
1018       gtk_print_backend_destroy (backend);
1019       g_object_unref (backend);
1020     }
1021   else
1022     {
1023       g_signal_connect (backend, "printer-added",
1024                         (GCallback) printer_added_cb,
1025                         finder);
1026       g_signal_connect (backend, "printer-list-done",
1027                         (GCallback) printer_list_done_cb,
1028                         finder);
1029     }
1030
1031 }
1032
1033 static void
1034 printer_finder_free (PrinterFinder *finder)
1035 {
1036   GList *l;
1037
1038   g_free (finder->printer_name);
1039
1040   if (finder->printer)
1041     g_object_unref (finder->printer);
1042
1043   if (finder->default_printer)
1044     g_object_unref (finder->default_printer);
1045
1046   if (finder->first_printer)
1047     g_object_unref (finder->first_printer);
1048
1049   for (l = finder->backends; l != NULL; l = l->next)
1050     {
1051       GtkPrintBackend *backend = l->data;
1052       g_signal_handlers_disconnect_by_func (backend, printer_added_cb, finder);
1053       g_signal_handlers_disconnect_by_func (backend, printer_list_done_cb, finder);
1054       gtk_print_backend_destroy (backend);
1055       g_object_unref (backend);
1056     }
1057
1058   g_list_free (finder->backends);
1059
1060   g_free (finder);
1061 }
1062
1063 static void
1064 find_printer (const gchar *printer,
1065               GFunc        func,
1066               gpointer     data)
1067 {
1068   GList *node, *next;
1069   PrinterFinder *finder;
1070
1071   finder = g_new0 (PrinterFinder, 1);
1072
1073   finder->printer_name = g_strdup (printer);
1074   finder->func = func;
1075   finder->data = data;
1076
1077   finder->backends = NULL;
1078   if (g_module_supported ())
1079     finder->backends = gtk_print_backend_load_modules ();
1080
1081   for (node = finder->backends; !finder->found_printer && node != NULL; node = next)
1082     {
1083       next = node->next;
1084       find_printer_init (finder, GTK_PRINT_BACKEND (node->data));
1085     }
1086
1087   if (finder->backends == NULL && !finder->found_printer)
1088     g_idle_add (find_printer_idle, finder);
1089 }
1090
1091 #define __GTK_PRINT_OPERATION_UNIX_C__
1092 #include "gtkaliasdef.c"