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 <glib/gstdio.h>
  34 #include "gtkprintoperation-private.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   GString *final;
 128
 129   g_return_val_if_fail (cmd != NULL, NULL);
 130   g_return_val_if_fail (pdf_filename != NULL, NULL);
 131   g_return_val_if_fail (settings_filename != NULL, NULL);
 132
 133   final = g_string_new (NULL);
 134
 135   *pdf_filename_replaced = FALSE;
 136   *settings_filename_replaced = FALSE;
 137
 138   start = inptr = cmd;
 139   while ((inptr = strchr (inptr, '%')) != NULL)
 140     {
 141       g_string_append_len (final, start, inptr - start);
 142       inptr++;
 143       switch (*inptr)
 144         {
 145           case 'f':
 146             g_string_append (final, pdf_filename);
 147             *pdf_filename_replaced = TRUE;
 148             break;
 149
 150           case 's':
 151             g_string_append (final, settings_filename);
 152             *settings_filename_replaced = TRUE;
 153             break;
 154
 155           case '%':
 156             g_string_append_c (final, '%');
 157             break;
 158
 159           default:
 160             g_string_append_c (final, '%');
 161             if (*inptr)
 162               g_string_append_c (final, *inptr);
 163             break;
 164         }
 165       if (*inptr)
 166         inptr++;
 167       start = inptr;
 168     }
 169   g_string_append (final, start);
 170
 171   return g_string_free (final, FALSE);
 172 }
 173
 174 void
 175 _gtk_print_operation_platform_backend_launch_preview (GtkPrintOperation *op,
 176                                                       cairo_surface_t   *surface,
 177                                                       GtkWindow         *parent,
 178                                                       const gchar       *filename)
 179 {
 180   gint argc;
 181   gchar **argv;
 182   gchar *cmd;
 183   gchar *preview_cmd;
 184   GtkSettings *settings;
 185   GtkPrintSettings *print_settings;
 186   gchar *settings_filename = NULL;
 187   gchar *quoted_filename;
 188   gchar *quoted_settings_filename;
 189   gboolean filename_used = FALSE;
 190   gboolean settings_used = FALSE;
 191   GdkScreen *screen;
 192   GError *error = NULL;
 193   gint fd;
 194   gboolean retval;
 195
 196   cairo_surface_destroy (surface);
 197
 198   if (parent)
 199     screen = gtk_window_get_screen (parent);
 200   else
 201     screen = gdk_screen_get_default ();
 202
 203   fd = g_file_open_tmp ("settingsXXXXXX.ini", &settings_filename, &error);
 204   if (fd < 0)
 205     goto out;
 206
 207   print_settings = gtk_print_operation_get_print_settings (op);
 208   retval = gtk_print_settings_to_file (print_settings, settings_filename, &error);
 209   close (fd);
 210
 211   if (!retval)
 212     goto out;
 213
 214   settings = gtk_settings_get_for_screen (screen);
 215   g_object_get (settings, "gtk-print-preview-command", &preview_cmd, NULL);
 216
 217   quoted_filename = g_shell_quote (filename);
 218   quoted_settings_filename = g_shell_quote (settings_filename);
 219   cmd = shell_command_substitute_file (preview_cmd, quoted_filename, quoted_settings_filename, &filename_used, &settings_used);
 220   g_shell_parse_argv (cmd, &argc, &argv, &error);
 221
 222   g_free (preview_cmd);
 223   g_free (quoted_filename);
 224   g_free (quoted_settings_filename);
 225   g_free (cmd);
 226
 227   if (error != NULL)
 228     goto out;
 229
 230   gdk_spawn_on_screen (screen, NULL, argv, NULL, G_SPAWN_SEARCH_PATH, NULL, NULL, NULL, &error);
 231
 232   g_strfreev (argv);
 233
 234  out:
 235   if (error != NULL)
 236     {
 237       GtkWidget *edialog;
 238       edialog = gtk_message_dialog_new (parent,
 239                                         GTK_DIALOG_DESTROY_WITH_PARENT,
 240                                         GTK_MESSAGE_ERROR,
 241                                         GTK_BUTTONS_CLOSE,
 242                                         _("Error launching preview") /* FIXME better text */);
 243       gtk_message_dialog_format_secondary_text (GTK_MESSAGE_DIALOG (edialog),
 244                                                 "%s", error->message);
 245       g_signal_connect (edialog, "response",
 246                         G_CALLBACK (gtk_widget_destroy), NULL);
 247
 248       gtk_window_present (GTK_WINDOW (edialog));
 249
 250       g_error_free (error);
 251
 252       filename_used = FALSE;
 253       settings_used = FALSE;
 254    }
 255
 256   if (!filename_used)
 257     g_unlink (filename);
 258
 259   if (!settings_used)
 260     g_unlink (settings_filename);
 261
 262   g_free (settings_filename);
 263 }
 264
 265 static void
 266 unix_finish_send  (GtkPrintJob *job,
 267                    gpointer     user_data,
 268                    GError      *error)
 269 {
 270   GtkPrintOperation *op = (GtkPrintOperation *) user_data;
 271   GtkPrintOperationUnix *op_unix = op->priv->platform_data;
 272
 273   if (error != NULL)
 274     {
 275       GtkWidget *edialog;
 276       edialog = gtk_message_dialog_new (op_unix->parent,
 277                                         GTK_DIALOG_DESTROY_WITH_PARENT,
 278                                         GTK_MESSAGE_ERROR,
 279                                         GTK_BUTTONS_CLOSE,
 280                                         _("Error printing") /* FIXME better text */);
 281       gtk_message_dialog_format_secondary_text (GTK_MESSAGE_DIALOG (edialog),
 282                                                 "%s", error->message);
 283       gtk_window_set_modal (GTK_WINDOW (edialog), TRUE);
 284       g_signal_connect (edialog, "response",
 285                         G_CALLBACK (gtk_widget_destroy), NULL);
 286
 287       gtk_window_present (GTK_WINDOW (edialog));
 288     }
 289
 290   op_unix->data_sent = TRUE;
 291
 292   if (op_unix->loop)
 293     g_main_loop_quit (op_unix->loop);
 294
 295   g_object_unref (op);
 296 }
 297
 298 static void
 299 unix_end_run (GtkPrintOperation *op,
 300               gboolean           wait,
 301               gboolean           cancelled)
 302 {
 303   GtkPrintOperationUnix *op_unix = op->priv->platform_data;
 304
 305   cairo_surface_finish (op_unix->surface);
 306
 307   if (cancelled)
 308     return;
 309
 310   if (wait)
 311     op_unix->loop = g_main_loop_new (NULL, FALSE);
 312
 313   /* TODO: Check for error */
 314   if (op_unix->job != NULL)
 315     {
 316       g_object_ref (op);
 317       gtk_print_job_send (op_unix->job,
 318                           unix_finish_send,
 319                           op, NULL);
 320     }
 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   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     gtk_print_unix_dialog_set_page_setup (GTK_PRINT_UNIX_DIALOG (pd),
 368                                           priv->default_page_setup);
 369
 370   g_signal_emit_by_name (op, "create-custom-widget",
 371                          &priv->custom_widget);
 372
 373   if (priv->custom_widget)
 374     {
 375       custom_tab_label = priv->custom_tab_label;
 376
 377       if (custom_tab_label == NULL)
 378         {
 379           custom_tab_label = g_get_application_name ();
 380           if (custom_tab_label == NULL)
 381             custom_tab_label = _("Application");
 382         }
 383
 384       label = gtk_label_new (custom_tab_label);
 385
 386       gtk_print_unix_dialog_add_custom_tab (GTK_PRINT_UNIX_DIALOG (pd),
 387                                             priv->custom_widget, label);
 388     }
 389
 390   return pd;
 391 }
 392
 393 typedef struct
 394 {
 395   GtkPrintOperation           *op;
 396   gboolean                     do_print;
 397   gboolean                     do_preview;
 398   GtkPrintOperationResult      result;
 399   GtkPrintOperationPrintFunc   print_cb;
 400   GDestroyNotify               destroy;
 401   GtkWindow                   *parent;
 402   GMainLoop                   *loop;
 403 } PrintResponseData;
 404
 405 static void
 406 print_response_data_free (gpointer data)
 407 {
 408   PrintResponseData *rdata = data;
 409
 410   g_object_unref (rdata->op);
 411   g_free (rdata);
 412 }
 413
 414 static void
 415 finish_print (PrintResponseData *rdata,
 416               GtkPrinter        *printer,
 417               GtkPageSetup      *page_setup,
 418               GtkPrintSettings  *settings)
 419 {
 420   GtkPrintOperation *op = rdata->op;
 421   GtkPrintOperationPrivate *priv = op->priv;
 422   GtkPrintJob *job;
 423
 424   if (rdata->do_print)
 425     {
 426       gtk_print_operation_set_print_settings (op, settings);
 427       priv->print_context = _gtk_print_context_new (op);
 428
 429       if ( (page_setup != NULL) && (gtk_print_operation_get_default_page_setup (op) == NULL))
 430         gtk_print_operation_set_default_page_setup (op, page_setup);
 431
 432       _gtk_print_context_set_page_setup (priv->print_context, page_setup);
 433
 434       if (!rdata->do_preview)
 435         {
 436           GtkPrintOperationUnix *op_unix;
 437           cairo_t *cr;
 438
 439           op_unix = g_new0 (GtkPrintOperationUnix, 1);
 440           priv->platform_data = op_unix;
 441           priv->free_platform_data = (GDestroyNotify) op_unix_free;
 442           op_unix->parent = rdata->parent;
 443
 444           priv->start_page = unix_start_page;
 445           priv->end_page = unix_end_page;
 446           priv->end_run = unix_end_run;
 447
 448           job = gtk_print_job_new (priv->job_name, printer, settings, page_setup);
 449           op_unix->job = job;
 450           gtk_print_job_set_track_print_status (job, priv->track_print_status);
 451
 452           op_unix->surface = gtk_print_job_get_surface (job, &priv->error);
 453           if (op_unix->surface == NULL)
 454             {
 455               rdata->result = GTK_PRINT_OPERATION_RESULT_ERROR;
 456               rdata->do_print = FALSE;
 457               goto out;
 458             }
 459
 460           cr = cairo_create (op_unix->surface);
 461           gtk_print_context_set_cairo_context (priv->print_context, cr, 72, 72);
 462           cairo_destroy (cr);
 463
 464           _gtk_print_operation_set_status (op, gtk_print_job_get_status (job), NULL);
 465
 466           op_unix->job_status_changed_tag =
 467             g_signal_connect (job, "status-changed",
 468                               G_CALLBACK (job_status_changed_cb), op);
 469
 470           priv->print_pages = job->print_pages;
 471           priv->page_ranges = job->page_ranges;
 472           priv->num_page_ranges = job->num_page_ranges;
 473
 474           priv->manual_num_copies = job->num_copies;
 475           priv->manual_collation = job->collate;
 476           priv->manual_reverse = job->reverse;
 477           priv->manual_page_set = job->page_set;
 478           priv->manual_scale = job->scale;
 479           priv->manual_orientation = job->rotate_to_orientation;
 480         }
 481     }
 482  out:
 483   if (rdata->print_cb)
 484     rdata->print_cb (op, rdata->parent, rdata->do_print, rdata->result);
 485
 486   if (rdata->destroy)
 487     rdata->destroy (rdata);
 488 }
 489
 490 static void
 491 handle_print_response (GtkWidget *dialog,
 492                        gint       response,
 493                        gpointer   data)
 494 {
 495   GtkPrintUnixDialog *pd = GTK_PRINT_UNIX_DIALOG (dialog);
 496   PrintResponseData *rdata = data;
 497   GtkPrintSettings *settings = NULL;
 498   GtkPageSetup *page_setup = NULL;
 499   GtkPrinter *printer = NULL;
 500
 501   if (response == GTK_RESPONSE_OK)
 502     {
 503       printer = gtk_print_unix_dialog_get_selected_printer (GTK_PRINT_UNIX_DIALOG (pd));
 504
 505       rdata->result = GTK_PRINT_OPERATION_RESULT_APPLY;
 506       rdata->do_preview = FALSE;
 507       if (printer != NULL)
 508         rdata->do_print = TRUE;
 509     }
 510   else if (response == GTK_RESPONSE_APPLY)
 511     {
 512       /* print preview */
 513       rdata->result = GTK_PRINT_OPERATION_RESULT_APPLY;
 514       rdata->do_preview = TRUE;
 515       rdata->do_print = TRUE;
 516
 517       rdata->op->priv->action = GTK_PRINT_OPERATION_ACTION_PREVIEW;
 518     }
 519
 520   if (rdata->do_print)
 521     {
 522       settings = gtk_print_unix_dialog_get_settings (GTK_PRINT_UNIX_DIALOG (pd));
 523       page_setup = gtk_print_unix_dialog_get_page_setup (GTK_PRINT_UNIX_DIALOG (pd));
 524
 525       g_signal_emit_by_name (rdata->op, "custom-widget-apply", rdata->op->priv->custom_widget);
 526     }
 527
 528   finish_print (rdata, printer, page_setup, settings);
 529
 530   if (settings)
 531     g_object_unref (settings);
 532
 533   gtk_widget_destroy (GTK_WIDGET (pd));
 534
 535 }
 536
 537
 538 static void
 539 found_printer (GtkPrinter        *printer,
 540                PrintResponseData *rdata)
 541 {
 542   GtkPrintOperation *op = rdata->op;
 543   GtkPrintOperationPrivate *priv = op->priv;
 544   GtkPrintSettings *settings = NULL;
 545   GtkPageSetup *page_setup = NULL;
 546
 547   if (rdata->loop)
 548     g_main_loop_quit (rdata->loop);
 549
 550   if (printer != NULL)
 551     {
 552       rdata->result = GTK_PRINT_OPERATION_RESULT_APPLY;
 553
 554       rdata->do_print = TRUE;
 555
 556       if (priv->print_settings)
 557         settings = gtk_print_settings_copy (priv->print_settings);
 558       else
 559         settings = gtk_print_settings_new ();
 560
 561       gtk_print_settings_set_printer (settings,
 562                                       gtk_printer_get_name (printer));
 563
 564       if (priv->default_page_setup)
 565         page_setup = gtk_page_setup_copy (priv->default_page_setup);
 566       else
 567         page_setup = gtk_page_setup_new ();
 568   }
 569
 570   finish_print (rdata, printer, page_setup, settings);
 571
 572   if (settings)
 573     g_object_unref (settings);
 574
 575   if (page_setup)
 576     g_object_unref (page_setup);
 577 }
 578
 579 void
 580 _gtk_print_operation_platform_backend_run_dialog_async (GtkPrintOperation          *op,
 581                                                         gboolean                    show_dialog,
 582                                                         GtkWindow                  *parent,
 583                                                         GtkPrintOperationPrintFunc  print_cb)
 584 {
 585   GtkWidget *pd;
 586   PrintResponseData *rdata;
 587   const gchar *printer_name;
 588
 589   rdata = g_new (PrintResponseData, 1);
 590   rdata->op = g_object_ref (op);
 591   rdata->do_print = FALSE;
 592   rdata->do_preview = FALSE;
 593   rdata->result = GTK_PRINT_OPERATION_RESULT_CANCEL;
 594   rdata->print_cb = print_cb;
 595   rdata->parent = parent;
 596   rdata->loop = NULL;
 597   rdata->destroy = print_response_data_free;
 598
 599   if (show_dialog)
 600     {
 601       pd = get_print_dialog (op, parent);
 602       gtk_window_set_modal (GTK_WINDOW (pd), TRUE);
 603
 604       g_signal_connect (pd, "response",
 605                         G_CALLBACK (handle_print_response), rdata);
 606
 607       gtk_window_present (GTK_WINDOW (pd));
 608     }
 609   else
 610     {
 611       printer_name = NULL;
 612       if (op->priv->print_settings)
 613         printer_name = gtk_print_settings_get_printer (op->priv->print_settings);
 614
 615       find_printer (printer_name, (GFunc) found_printer, rdata);
 616     }
 617 }
 618
 619 static cairo_status_t
 620 write_preview (void                *closure,
 621                const unsigned char *data,
 622                unsigned int         length)
 623 {
 624   gint fd = GPOINTER_TO_INT (closure);
 625   gssize written;
 626
 627   while (length > 0)
 628     {
 629       written = write (fd, data, length);
 630
 631       if (written == -1)
 632         {
 633           if (errno == EAGAIN || errno == EINTR)
 634             continue;
 635
 636           return CAIRO_STATUS_WRITE_ERROR;
 637         }
 638
 639       data += written;
 640       length -= written;
 641     }
 642
 643   return CAIRO_STATUS_SUCCESS;
 644 }
 645
 646 static void
 647 close_preview (void *data)
 648 {
 649   gint fd = GPOINTER_TO_INT (data);
 650
 651   close (fd);
 652 }
 653
 654 cairo_surface_t *
 655 _gtk_print_operation_platform_backend_create_preview_surface (GtkPrintOperation *op,
 656                                                               GtkPageSetup      *page_setup,
 657                                                               gdouble           *dpi_x,
 658                                                               gdouble           *dpi_y,
 659                                                               gchar            **target)
 660 {
 661   gchar *filename;
 662   gint fd;
 663   GtkPaperSize *paper_size;
 664   gdouble w, h;
 665   cairo_surface_t *surface;
 666   static cairo_user_data_key_t key;
 667
 668   filename = g_build_filename (g_get_tmp_dir (), "previewXXXXXX.pdf", NULL);
 669   fd = g_mkstemp (filename);
 670
 671   if (fd < 0)
 672     {
 673       g_free (filename);
 674       return NULL;
 675     }
 676
 677   *target = filename;
 678
 679   paper_size = gtk_page_setup_get_paper_size (page_setup);
 680   w = gtk_paper_size_get_width (paper_size, GTK_UNIT_POINTS);
 681   h = gtk_paper_size_get_height (paper_size, GTK_UNIT_POINTS);
 682
 683   *dpi_x = *dpi_y = 72;
 684   surface = cairo_pdf_surface_create_for_stream (write_preview, GINT_TO_POINTER (fd), w, h);
 685
 686   cairo_surface_set_user_data (surface, &key, GINT_TO_POINTER (fd), close_preview);
 687
 688   return surface;
 689 }
 690
 691 void
 692 _gtk_print_operation_platform_backend_preview_start_page (GtkPrintOperation *op,
 693                                                           cairo_surface_t   *surface,
 694                                                           cairo_t           *cr)
 695 {
 696 }
 697
 698 void
 699 _gtk_print_operation_platform_backend_preview_end_page (GtkPrintOperation *op,
 700                                                         cairo_surface_t   *surface,
 701                                                         cairo_t           *cr)
 702 {
 703   cairo_show_page (cr);
 704 }
 705
 706 void
 707 _gtk_print_operation_platform_backend_resize_preview_surface (GtkPrintOperation *op,
 708                                                               GtkPageSetup      *page_setup,
 709                                                               cairo_surface_t   *surface)
 710 {
 711   GtkPaperSize *paper_size;
 712   gdouble w, h;
 713
 714   paper_size = gtk_page_setup_get_paper_size (page_setup);
 715   w = gtk_paper_size_get_width (paper_size, GTK_UNIT_POINTS);
 716   h = gtk_paper_size_get_height (paper_size, GTK_UNIT_POINTS);
 717   cairo_pdf_surface_set_size (surface, w, h);
 718 }
 719
 720
 721 GtkPrintOperationResult
 722 _gtk_print_operation_platform_backend_run_dialog (GtkPrintOperation *op,
 723                                                   gboolean           show_dialog,
 724                                                   GtkWindow         *parent,
 725                                                   gboolean          *do_print)
 726  {
 727   GtkWidget *pd;
 728   PrintResponseData rdata;
 729   gint response;
 730   const gchar *printer_name;
 731
 732   rdata.op = op;
 733   rdata.do_print = FALSE;
 734   rdata.do_preview = FALSE;
 735   rdata.result = GTK_PRINT_OPERATION_RESULT_CANCEL;
 736   rdata.print_cb = NULL;
 737   rdata.destroy = NULL;
 738   rdata.parent = parent;
 739   rdata.loop = NULL;
 740
 741   if (show_dialog)
 742     {
 743       pd = get_print_dialog (op, parent);
 744
 745       response = gtk_dialog_run (GTK_DIALOG (pd));
 746       handle_print_response (pd, response, &rdata);
 747     }
 748   else
 749     {
 750       printer_name = NULL;
 751       if (op->priv->print_settings)
 752         printer_name = gtk_print_settings_get_printer (op->priv->print_settings);
 753
 754       rdata.loop = g_main_loop_new (NULL, FALSE);
 755       find_printer (printer_name,
 756                     (GFunc) found_printer, &rdata);
 757
 758       GDK_THREADS_LEAVE ();
 759       g_main_loop_run (rdata.loop);
 760       GDK_THREADS_ENTER ();
 761
 762       g_main_loop_unref (rdata.loop);
 763       rdata.loop = NULL;
 764     }
 765
 766   *do_print = rdata.do_print;
 767
 768   return rdata.result;
 769 }
 770
 771
 772 typedef struct
 773 {
 774   GtkPageSetup         *page_setup;
 775   GtkPageSetupDoneFunc  done_cb;
 776   gpointer              data;
 777   GDestroyNotify        destroy;
 778 } PageSetupResponseData;
 779
 780 static void
 781 page_setup_data_free (gpointer data)
 782 {
 783   PageSetupResponseData *rdata = data;
 784
 785   if (rdata->page_setup)
 786     g_object_unref (rdata->page_setup);
 787
 788   g_free (rdata);
 789 }
 790
 791 static void
 792 handle_page_setup_response (GtkWidget *dialog,
 793                             gint       response,
 794                             gpointer   data)
 795 {
 796   GtkPageSetupUnixDialog *psd;
 797   PageSetupResponseData *rdata = data;
 798
 799   psd = GTK_PAGE_SETUP_UNIX_DIALOG (dialog);
 800   if (response == GTK_RESPONSE_OK)
 801     rdata->page_setup = gtk_page_setup_unix_dialog_get_page_setup (psd);
 802
 803   gtk_widget_destroy (dialog);
 804
 805   if (rdata->done_cb)
 806     rdata->done_cb (rdata->page_setup, rdata->data);
 807
 808   if (rdata->destroy)
 809     rdata->destroy (rdata);
 810 }
 811
 812 static GtkWidget *
 813 get_page_setup_dialog (GtkWindow        *parent,
 814                        GtkPageSetup     *page_setup,
 815                        GtkPrintSettings *settings)
 816 {
 817   GtkWidget *dialog;
 818
 819   dialog = gtk_page_setup_unix_dialog_new (NULL, parent);
 820   if (page_setup)
 821     gtk_page_setup_unix_dialog_set_page_setup (GTK_PAGE_SETUP_UNIX_DIALOG (dialog),
 822                                                page_setup);
 823   gtk_page_setup_unix_dialog_set_print_settings (GTK_PAGE_SETUP_UNIX_DIALOG (dialog),
 824                                                  settings);
 825
 826   return dialog;
 827 }
 828
 829 /**
 830  * gtk_print_run_page_setup_dialog:
 831  * @parent: transient parent, or %NULL
 832  * @page_setup: an existing #GtkPageSetup, or %NULL
 833  * @settings: a #GtkPrintSettings
 834  *
 835  * Runs a page setup dialog, letting the user modify the values from
 836  * @page_setup. If the user cancels the dialog, the returned #GtkPageSetup
 837  * is identical to the passed in @page_setup, otherwise it contains the
 838  * modifications done in the dialog.
 839  *
 840  * Note that this function may use a recursive mainloop to show the page
 841  * setup dialog. See gtk_print_run_page_setup_dialog_async() if this is
 842  * a problem.
 843  *
 844  * Return value: a new #GtkPageSetup
 845  *
 846  * Since: 2.10
 847  */
 848 GtkPageSetup *
 849 gtk_print_run_page_setup_dialog (GtkWindow        *parent,
 850                                  GtkPageSetup     *page_setup,
 851                                  GtkPrintSettings *settings)
 852 {
 853   GtkWidget *dialog;
 854   gint response;
 855   PageSetupResponseData rdata;
 856
 857   rdata.page_setup = NULL;
 858   rdata.done_cb = NULL;
 859   rdata.data = NULL;
 860   rdata.destroy = NULL;
 861
 862   dialog = get_page_setup_dialog (parent, page_setup, settings);
 863   response = gtk_dialog_run (GTK_DIALOG (dialog));
 864   handle_page_setup_response (dialog, response, &rdata);
 865
 866   if (rdata.page_setup)
 867     return rdata.page_setup;
 868   else if (page_setup)
 869     return gtk_page_setup_copy (page_setup);
 870   else
 871     return gtk_page_setup_new ();
 872 }
 873
 874 /**
 875  * gtk_print_run_page_setup_dialog_async:
 876  * @parent: transient parent, or %NULL
 877  * @page_setup: an existing #GtkPageSetup, or %NULL
 878  * @settings: a #GtkPrintSettings
 879  * @done_cb: a function to call when the user saves the modified page setup
 880  * @data: user data to pass to @done_cb
 881  *
 882  * Runs a page setup dialog, letting the user modify the values from @page_setup.
 883  *
 884  * In contrast to gtk_print_run_page_setup_dialog(), this function  returns after
 885  * showing the page setup dialog on platforms that support this, and calls @done_cb
 886  * from a signal handler for the ::response signal of the dialog.
 887  *
 888  * Since: 2.10
 889  */
 890 void
 891 gtk_print_run_page_setup_dialog_async (GtkWindow            *parent,
 892                                        GtkPageSetup         *page_setup,
 893                                        GtkPrintSettings     *settings,
 894                                        GtkPageSetupDoneFunc  done_cb,
 895                                        gpointer              data)
 896 {
 897   GtkWidget *dialog;
 898   PageSetupResponseData *rdata;
 899
 900   dialog = get_page_setup_dialog (parent, page_setup, settings);
 901   gtk_window_set_modal (GTK_WINDOW (dialog), TRUE);
 902
 903   rdata = g_new (PageSetupResponseData, 1);
 904   rdata->page_setup = NULL;
 905   rdata->done_cb = done_cb;
 906   rdata->data = data;
 907   rdata->destroy = page_setup_data_free;
 908
 909   g_signal_connect (dialog, "response",
 910                     G_CALLBACK (handle_page_setup_response), rdata);
 911
 912   gtk_window_present (GTK_WINDOW (dialog));
 913  }
 914
 915 struct _PrinterFinder
 916 {
 917   gboolean found_printer;
 918   GFunc func;
 919   gpointer data;
 920   gchar *printer_name;
 921   GList *backends;
 922   guint timeout_tag;
 923   GtkPrinter *printer;
 924   GtkPrinter *default_printer;
 925   GtkPrinter *first_printer;
 926 };
 927
 928 static gboolean
 929 find_printer_idle (gpointer data)
 930 {
 931   PrinterFinder *finder = data;
 932   GtkPrinter *printer;
 933
 934   if (finder->printer != NULL)
 935     printer = finder->printer;
 936   else if (finder->default_printer != NULL)
 937     printer = finder->default_printer;
 938   else if (finder->first_printer != NULL)
 939     printer = finder->first_printer;
 940   else
 941     printer = NULL;
 942
 943   finder->func (printer, finder->data);
 944
 945   printer_finder_free (finder);
 946
 947   return FALSE;
 948 }
 949
 950 static void
 951 printer_added_cb (GtkPrintBackend *backend,
 952                   GtkPrinter      *printer,
 953                   PrinterFinder   *finder)
 954 {
 955   if (finder->found_printer)
 956     return;
 957
 958   /* FIXME this skips "Print to PDF" - is this intentional ? */
 959   if (gtk_printer_is_virtual (printer))
 960     return;
 961
 962   if (finder->printer_name != NULL &&
 963       strcmp (gtk_printer_get_name (printer), finder->printer_name) == 0)
 964     {
 965       finder->printer = g_object_ref (printer);
 966       finder->found_printer = TRUE;
 967     }
 968   else if (finder->default_printer == NULL &&
 969            gtk_printer_is_default (printer))
 970     {
 971       finder->default_printer = g_object_ref (printer);
 972       if (finder->printer_name == NULL)
 973         finder->found_printer = TRUE;
 974     }
 975   else
 976     if (finder->first_printer == NULL)
 977       finder->first_printer = g_object_ref (printer);
 978
 979   if (finder->found_printer)
 980     g_idle_add (find_printer_idle, finder);
 981 }
 982
 983 static void
 984 printer_list_done_cb (GtkPrintBackend *backend,
 985                       PrinterFinder   *finder)
 986 {
 987   finder->backends = g_list_remove (finder->backends, backend);
 988
 989   g_signal_handlers_disconnect_by_func (backend, printer_added_cb, finder);
 990   g_signal_handlers_disconnect_by_func (backend, printer_list_done_cb, finder);
 991
 992   gtk_print_backend_destroy (backend);
 993   g_object_unref (backend);
 994
 995   if (finder->backends == NULL && !finder->found_printer)
 996     g_idle_add (find_printer_idle, finder);
 997 }
 998
 999 static void
1000 find_printer_init (PrinterFinder   *finder,
1001                    GtkPrintBackend *backend)
1002 {
1003   GList *list;
1004   GList *node;
1005
1006   list = gtk_print_backend_get_printer_list (backend);
1007
1008   node = list;
1009   while (node != NULL)
1010     {
1011       printer_added_cb (backend, node->data, finder);
1012       node = node->next;
1013
1014       if (finder->found_printer)
1015         break;
1016     }
1017
1018   g_list_free (list);
1019
1020   if (gtk_print_backend_printer_list_is_done (backend))
1021     {
1022       finder->backends = g_list_remove (finder->backends, backend);
1023       gtk_print_backend_destroy (backend);
1024       g_object_unref (backend);
1025     }
1026   else
1027     {
1028       g_signal_connect (backend, "printer-added",
1029                         (GCallback) printer_added_cb,
1030                         finder);
1031       g_signal_connect (backend, "printer-list-done",
1032                         (GCallback) printer_list_done_cb,
1033                         finder);
1034     }
1035
1036 }
1037
1038 static void
1039 printer_finder_free (PrinterFinder *finder)
1040 {
1041   GList *l;
1042
1043   g_free (finder->printer_name);
1044
1045   if (finder->printer)
1046     g_object_unref (finder->printer);
1047
1048   if (finder->default_printer)
1049     g_object_unref (finder->default_printer);
1050
1051   if (finder->first_printer)
1052     g_object_unref (finder->first_printer);
1053
1054   for (l = finder->backends; l != NULL; l = l->next)
1055     {
1056       GtkPrintBackend *backend = l->data;
1057       g_signal_handlers_disconnect_by_func (backend, printer_added_cb, finder);
1058       g_signal_handlers_disconnect_by_func (backend, printer_list_done_cb, finder);
1059       gtk_print_backend_destroy (backend);
1060       g_object_unref (backend);
1061     }
1062
1063   g_list_free (finder->backends);
1064
1065   g_free (finder);
1066 }
1067
1068 static void
1069 find_printer (const gchar *printer,
1070               GFunc        func,
1071               gpointer     data)
1072 {
1073   GList *node, *next;
1074   PrinterFinder *finder;
1075
1076   finder = g_new0 (PrinterFinder, 1);
1077
1078   finder->printer_name = g_strdup (printer);
1079   finder->func = func;
1080   finder->data = data;
1081
1082   finder->backends = NULL;
1083   if (g_module_supported ())
1084     finder->backends = gtk_print_backend_load_modules ();
1085
1086   for (node = finder->backends; !finder->found_printer && node != NULL; node = next)
1087     {
1088       next = node->next;
1089       find_printer_init (finder, GTK_PRINT_BACKEND (node->data));
1090     }
1091
1092   if (finder->backends == NULL && !finder->found_printer)
1093     g_idle_add (find_printer_idle, finder);
1094 }
1095
1096 #define __GTK_PRINT_OPERATION_UNIX_C__
1097 #include "gtkaliasdef.c"