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 ((op->priv->manual_number_up < 2) ||
  91       (op->priv->page_position % op->priv->manual_number_up == 0))
  92     {
  93       if (type == CAIRO_SURFACE_TYPE_PS)
  94         cairo_ps_surface_set_size (op_unix->surface, w, h);
  95       else if (type == CAIRO_SURFACE_TYPE_PDF)
  96         cairo_pdf_surface_set_size (op_unix->surface, w, h);
  97     }
  98 }
  99
 100 static void
 101 unix_end_page (GtkPrintOperation *op,
 102                GtkPrintContext   *print_context)
 103 {
 104   cairo_t *cr;
 105
 106   cr = gtk_print_context_get_cairo_context (print_context);
 107
 108   if ((op->priv->manual_number_up < 2) ||
 109       ((op->priv->page_position + 1) % op->priv->manual_number_up == 0) ||
 110       (op->priv->page_position == op->priv->nr_of_pages_to_print - 1))
 111     cairo_show_page (cr);
 112 }
 113
 114 static void
 115 op_unix_free (GtkPrintOperationUnix *op_unix)
 116 {
 117   if (op_unix->job)
 118     {
 119       g_signal_handler_disconnect (op_unix->job,
 120                                    op_unix->job_status_changed_tag);
 121       g_object_unref (op_unix->job);
 122     }
 123
 124   g_free (op_unix);
 125 }
 126
 127 static gchar *
 128 shell_command_substitute_file (const gchar *cmd,
 129                                const gchar *pdf_filename,
 130                                const gchar *settings_filename,
 131                                gboolean    *pdf_filename_replaced,
 132                                gboolean    *settings_filename_replaced)
 133 {
 134   const gchar *inptr, *start;
 135   GString *final;
 136
 137   g_return_val_if_fail (cmd != NULL, NULL);
 138   g_return_val_if_fail (pdf_filename != NULL, NULL);
 139   g_return_val_if_fail (settings_filename != NULL, NULL);
 140
 141   final = g_string_new (NULL);
 142
 143   *pdf_filename_replaced = FALSE;
 144   *settings_filename_replaced = FALSE;
 145
 146   start = inptr = cmd;
 147   while ((inptr = strchr (inptr, '%')) != NULL)
 148     {
 149       g_string_append_len (final, start, inptr - start);
 150       inptr++;
 151       switch (*inptr)
 152         {
 153           case 'f':
 154             g_string_append (final, pdf_filename);
 155             *pdf_filename_replaced = TRUE;
 156             break;
 157
 158           case 's':
 159             g_string_append (final, settings_filename);
 160             *settings_filename_replaced = TRUE;
 161             break;
 162
 163           case '%':
 164             g_string_append_c (final, '%');
 165             break;
 166
 167           default:
 168             g_string_append_c (final, '%');
 169             if (*inptr)
 170               g_string_append_c (final, *inptr);
 171             break;
 172         }
 173       if (*inptr)
 174         inptr++;
 175       start = inptr;
 176     }
 177   g_string_append (final, start);
 178
 179   return g_string_free (final, FALSE);
 180 }
 181
 182 void
 183 _gtk_print_operation_platform_backend_launch_preview (GtkPrintOperation *op,
 184                                                       cairo_surface_t   *surface,
 185                                                       GtkWindow         *parent,
 186                                                       const gchar       *filename)
 187 {
 188   gint argc;
 189   gchar **argv;
 190   gchar *cmd;
 191   gchar *preview_cmd;
 192   GtkSettings *settings;
 193   GtkPrintSettings *print_settings;
 194   GtkPageSetup *page_setup;
 195   GKeyFile *key_file = NULL;
 196   gchar *data = NULL;
 197   gsize data_len;
 198   gchar *settings_filename = NULL;
 199   gchar *quoted_filename;
 200   gchar *quoted_settings_filename;
 201   gboolean filename_used = FALSE;
 202   gboolean settings_used = FALSE;
 203   GdkScreen *screen;
 204   GError *error = NULL;
 205   gint fd;
 206   gboolean retval;
 207
 208   cairo_surface_destroy (surface);
 209
 210   if (parent)
 211     screen = gtk_window_get_screen (parent);
 212   else
 213     screen = gdk_screen_get_default ();
 214
 215   fd = g_file_open_tmp ("settingsXXXXXX.ini", &settings_filename, &error);
 216   if (fd < 0)
 217     goto out;
 218
 219   key_file = g_key_file_new ();
 220
 221   print_settings = gtk_print_operation_get_print_settings (op);
 222   gtk_print_settings_to_key_file (print_settings, key_file, NULL);
 223
 224   page_setup = gtk_print_context_get_page_setup (op->priv->print_context);
 225   gtk_page_setup_to_key_file (page_setup, key_file, NULL);
 226
 227   g_key_file_set_string (key_file, "Print Job", "title", op->priv->job_name);
 228
 229   data = g_key_file_to_data (key_file, &data_len, &error);
 230   if (!data)
 231     goto out;
 232
 233   retval = g_file_set_contents (settings_filename, data, data_len, &error);
 234   if (!retval)
 235     goto out;
 236
 237   settings = gtk_settings_get_for_screen (screen);
 238   g_object_get (settings, "gtk-print-preview-command", &preview_cmd, NULL);
 239
 240   quoted_filename = g_shell_quote (filename);
 241   quoted_settings_filename = g_shell_quote (settings_filename);
 242   cmd = shell_command_substitute_file (preview_cmd, quoted_filename, quoted_settings_filename, &filename_used, &settings_used);
 243   g_shell_parse_argv (cmd, &argc, &argv, &error);
 244
 245   g_free (preview_cmd);
 246   g_free (quoted_filename);
 247   g_free (quoted_settings_filename);
 248   g_free (cmd);
 249
 250   if (error != NULL)
 251     goto out;
 252
 253   gdk_spawn_on_screen (screen, NULL, argv, NULL, G_SPAWN_SEARCH_PATH, NULL, NULL, NULL, &error);
 254
 255   g_strfreev (argv);
 256
 257  out:
 258   if (error != NULL)
 259     {
 260       GtkWidget *edialog;
 261       edialog = gtk_message_dialog_new (parent,
 262                                         GTK_DIALOG_DESTROY_WITH_PARENT,
 263                                         GTK_MESSAGE_ERROR,
 264                                         GTK_BUTTONS_CLOSE,
 265                                         _("Error launching preview") /* FIXME better text */);
 266       gtk_message_dialog_format_secondary_text (GTK_MESSAGE_DIALOG (edialog),
 267                                                 "%s", error->message);
 268       g_signal_connect (edialog, "response",
 269                         G_CALLBACK (gtk_widget_destroy), NULL);
 270
 271       gtk_window_present (GTK_WINDOW (edialog));
 272
 273       g_error_free (error);
 274
 275       filename_used = FALSE;
 276       settings_used = FALSE;
 277    }
 278
 279   if (!filename_used)
 280     g_unlink (filename);
 281
 282   if (!settings_used)
 283     g_unlink (settings_filename);
 284
 285   if (fd > 0)
 286     close (fd);
 287
 288   if (key_file)
 289     g_key_file_free (key_file);
 290   g_free (data);
 291   g_free (settings_filename);
 292 }
 293
 294 static void
 295 unix_finish_send  (GtkPrintJob *job,
 296                    gpointer     user_data,
 297                    GError      *error)
 298 {
 299   GtkPrintOperation *op = (GtkPrintOperation *) user_data;
 300   GtkPrintOperationUnix *op_unix = op->priv->platform_data;
 301
 302   if (error != NULL)
 303     {
 304       GtkWidget *edialog;
 305       edialog = gtk_message_dialog_new (op_unix->parent,
 306                                         GTK_DIALOG_DESTROY_WITH_PARENT,
 307                                         GTK_MESSAGE_ERROR,
 308                                         GTK_BUTTONS_CLOSE,
 309                                         _("Error printing") /* FIXME better text */);
 310       gtk_message_dialog_format_secondary_text (GTK_MESSAGE_DIALOG (edialog),
 311                                                 "%s", error->message);
 312       gtk_window_set_modal (GTK_WINDOW (edialog), TRUE);
 313       g_signal_connect (edialog, "response",
 314                         G_CALLBACK (gtk_widget_destroy), NULL);
 315
 316       gtk_window_present (GTK_WINDOW (edialog));
 317     }
 318
 319   op_unix->data_sent = TRUE;
 320
 321   if (op_unix->loop)
 322     g_main_loop_quit (op_unix->loop);
 323
 324   g_object_unref (op);
 325 }
 326
 327 static void
 328 unix_end_run (GtkPrintOperation *op,
 329               gboolean           wait,
 330               gboolean           cancelled)
 331 {
 332   GtkPrintOperationUnix *op_unix = op->priv->platform_data;
 333
 334   cairo_surface_finish (op_unix->surface);
 335
 336   if (cancelled)
 337     return;
 338
 339   if (wait)
 340     op_unix->loop = g_main_loop_new (NULL, FALSE);
 341
 342   /* TODO: Check for error */
 343   if (op_unix->job != NULL)
 344     {
 345       g_object_ref (op);
 346       gtk_print_job_send (op_unix->job,
 347                           unix_finish_send,
 348                           op, NULL);
 349     }
 350
 351   if (wait)
 352     {
 353       g_object_ref (op);
 354       if (!op_unix->data_sent)
 355         {
 356           GDK_THREADS_LEAVE ();
 357           g_main_loop_run (op_unix->loop);
 358           GDK_THREADS_ENTER ();
 359         }
 360       g_main_loop_unref (op_unix->loop);
 361       op_unix->loop = NULL;
 362       g_object_unref (op);
 363     }
 364 }
 365
 366 static void
 367 job_status_changed_cb (GtkPrintJob       *job,
 368                        GtkPrintOperation *op)
 369 {
 370   _gtk_print_operation_set_status (op, gtk_print_job_get_status (job), NULL);
 371 }
 372
 373
 374 static void
 375 printer_changed_cb (GtkPrintUnixDialog *print_dialog,
 376                     GParamSpec         *pspec,
 377                     gpointer            user_data)
 378 {
 379   GtkPageSetup             *page_setup;
 380   GtkPrintSettings         *print_settings;
 381   GtkPrintOperation        *op = user_data;
 382   GtkPrintOperationPrivate *priv = op->priv;
 383
 384   page_setup = gtk_print_unix_dialog_get_page_setup (print_dialog);
 385   print_settings = gtk_print_unix_dialog_get_settings (print_dialog);
 386
 387   g_signal_emit_by_name (op,
 388                          "update-custom-widget",
 389                          priv->custom_widget,
 390                          page_setup,
 391                          print_settings);
 392 }
 393
 394 static GtkWidget *
 395 get_print_dialog (GtkPrintOperation *op,
 396                   GtkWindow         *parent)
 397 {
 398   GtkPrintOperationPrivate *priv = op->priv;
 399   GtkWidget *pd, *label;
 400   const gchar *custom_tab_label;
 401
 402   pd = gtk_print_unix_dialog_new (NULL, parent);
 403
 404   gtk_print_unix_dialog_set_manual_capabilities (GTK_PRINT_UNIX_DIALOG (pd),
 405                                                  GTK_PRINT_CAPABILITY_PAGE_SET |
 406                                                  GTK_PRINT_CAPABILITY_COPIES |
 407                                                  GTK_PRINT_CAPABILITY_COLLATE |
 408                                                  GTK_PRINT_CAPABILITY_REVERSE |
 409                                                  GTK_PRINT_CAPABILITY_SCALE |
 410                                                  GTK_PRINT_CAPABILITY_PREVIEW |
 411                                                  GTK_PRINT_CAPABILITY_NUMBER_UP |
 412                                                  GTK_PRINT_CAPABILITY_NUMBER_UP_LAYOUT);
 413
 414   if (priv->print_settings)
 415     gtk_print_unix_dialog_set_settings (GTK_PRINT_UNIX_DIALOG (pd),
 416                                         priv->print_settings);
 417
 418   if (priv->default_page_setup)
 419     gtk_print_unix_dialog_set_page_setup (GTK_PRINT_UNIX_DIALOG (pd),
 420                                           priv->default_page_setup);
 421
 422   gtk_print_unix_dialog_set_embed_page_setup (GTK_PRINT_UNIX_DIALOG (pd),
 423                                               priv->embed_page_setup);
 424
 425   gtk_print_unix_dialog_set_current_page (GTK_PRINT_UNIX_DIALOG (pd),
 426                                           priv->current_page);
 427
 428   gtk_print_unix_dialog_set_support_selection (GTK_PRINT_UNIX_DIALOG (pd),
 429                                                priv->support_selection);
 430
 431   gtk_print_unix_dialog_set_has_selection (GTK_PRINT_UNIX_DIALOG (pd),
 432                                            priv->has_selection);
 433
 434   g_signal_emit_by_name (op, "create-custom-widget",
 435                          &priv->custom_widget);
 436
 437   if (priv->custom_widget)
 438     {
 439       custom_tab_label = priv->custom_tab_label;
 440
 441       if (custom_tab_label == NULL)
 442         {
 443           custom_tab_label = g_get_application_name ();
 444           if (custom_tab_label == NULL)
 445             custom_tab_label = _("Application");
 446         }
 447
 448       label = gtk_label_new (custom_tab_label);
 449
 450       gtk_print_unix_dialog_add_custom_tab (GTK_PRINT_UNIX_DIALOG (pd),
 451                                             priv->custom_widget, label);
 452
 453       g_signal_connect (pd, "notify::selected-printer", (GCallback) printer_changed_cb, op);
 454     }
 455
 456   return pd;
 457 }
 458
 459 typedef struct
 460 {
 461   GtkPrintOperation           *op;
 462   gboolean                     do_print;
 463   gboolean                     do_preview;
 464   GtkPrintOperationResult      result;
 465   GtkPrintOperationPrintFunc   print_cb;
 466   GDestroyNotify               destroy;
 467   GtkWindow                   *parent;
 468   GMainLoop                   *loop;
 469 } PrintResponseData;
 470
 471 static void
 472 print_response_data_free (gpointer data)
 473 {
 474   PrintResponseData *rdata = data;
 475
 476   g_object_unref (rdata->op);
 477   g_free (rdata);
 478 }
 479
 480 static void
 481 finish_print (PrintResponseData *rdata,
 482               GtkPrinter        *printer,
 483               GtkPageSetup      *page_setup,
 484               GtkPrintSettings  *settings,
 485               gboolean           page_setup_set)
 486 {
 487   GtkPrintOperation *op = rdata->op;
 488   GtkPrintOperationPrivate *priv = op->priv;
 489   GtkPrintJob *job;
 490
 491   if (rdata->do_print)
 492     {
 493       gtk_print_operation_set_print_settings (op, settings);
 494       priv->print_context = _gtk_print_context_new (op);
 495
 496       if (page_setup != NULL &&
 497           (gtk_print_operation_get_default_page_setup (op) == NULL ||
 498            page_setup_set))
 499         gtk_print_operation_set_default_page_setup (op, page_setup);
 500
 501       _gtk_print_context_set_page_setup (priv->print_context, page_setup);
 502
 503       if (!rdata->do_preview)
 504         {
 505           GtkPrintOperationUnix *op_unix;
 506           cairo_t *cr;
 507
 508           op_unix = g_new0 (GtkPrintOperationUnix, 1);
 509           priv->platform_data = op_unix;
 510           priv->free_platform_data = (GDestroyNotify) op_unix_free;
 511           op_unix->parent = rdata->parent;
 512
 513           priv->start_page = unix_start_page;
 514           priv->end_page = unix_end_page;
 515           priv->end_run = unix_end_run;
 516
 517           job = gtk_print_job_new (priv->job_name, printer, settings, page_setup);
 518           op_unix->job = job;
 519           gtk_print_job_set_track_print_status (job, priv->track_print_status);
 520
 521           op_unix->surface = gtk_print_job_get_surface (job, &priv->error);
 522           if (op_unix->surface == NULL)
 523             {
 524               rdata->result = GTK_PRINT_OPERATION_RESULT_ERROR;
 525               rdata->do_print = FALSE;
 526               goto out;
 527             }
 528
 529           cr = cairo_create (op_unix->surface);
 530           gtk_print_context_set_cairo_context (priv->print_context, cr, 72, 72);
 531           cairo_destroy (cr);
 532
 533           _gtk_print_operation_set_status (op, gtk_print_job_get_status (job), NULL);
 534
 535           op_unix->job_status_changed_tag =
 536             g_signal_connect (job, "status-changed",
 537                               G_CALLBACK (job_status_changed_cb), op);
 538
 539           priv->print_pages = job->print_pages;
 540           priv->page_ranges = job->page_ranges;
 541           priv->num_page_ranges = job->num_page_ranges;
 542
 543           priv->manual_num_copies = job->num_copies;
 544           priv->manual_collation = job->collate;
 545           priv->manual_reverse = job->reverse;
 546           priv->manual_page_set = job->page_set;
 547           priv->manual_scale = job->scale;
 548           priv->manual_orientation = job->rotate_to_orientation;
 549           priv->manual_number_up = job->number_up;
 550           priv->manual_number_up_layout = job->number_up_layout;
 551         }
 552     }
 553  out:
 554   if (rdata->print_cb)
 555     rdata->print_cb (op, rdata->parent, rdata->do_print, rdata->result);
 556
 557   if (rdata->destroy)
 558     rdata->destroy (rdata);
 559 }
 560
 561 static void
 562 handle_print_response (GtkWidget *dialog,
 563                        gint       response,
 564                        gpointer   data)
 565 {
 566   GtkPrintUnixDialog *pd = GTK_PRINT_UNIX_DIALOG (dialog);
 567   PrintResponseData *rdata = data;
 568   GtkPrintSettings *settings = NULL;
 569   GtkPageSetup *page_setup = NULL;
 570   GtkPrinter *printer = NULL;
 571   gboolean page_setup_set = FALSE;
 572
 573   if (response == GTK_RESPONSE_OK)
 574     {
 575       printer = gtk_print_unix_dialog_get_selected_printer (GTK_PRINT_UNIX_DIALOG (pd));
 576
 577       rdata->result = GTK_PRINT_OPERATION_RESULT_APPLY;
 578       rdata->do_preview = FALSE;
 579       if (printer != NULL)
 580         rdata->do_print = TRUE;
 581     }
 582   else if (response == GTK_RESPONSE_APPLY)
 583     {
 584       /* print preview */
 585       rdata->result = GTK_PRINT_OPERATION_RESULT_APPLY;
 586       rdata->do_preview = TRUE;
 587       rdata->do_print = TRUE;
 588
 589       rdata->op->priv->action = GTK_PRINT_OPERATION_ACTION_PREVIEW;
 590     }
 591
 592   if (rdata->do_print)
 593     {
 594       settings = gtk_print_unix_dialog_get_settings (GTK_PRINT_UNIX_DIALOG (pd));
 595       page_setup = gtk_print_unix_dialog_get_page_setup (GTK_PRINT_UNIX_DIALOG (pd));
 596       page_setup_set = gtk_print_unix_dialog_get_page_setup_set (GTK_PRINT_UNIX_DIALOG (pd));
 597
 598       g_signal_emit_by_name (rdata->op, "custom-widget-apply", rdata->op->priv->custom_widget);
 599     }
 600
 601   finish_print (rdata, printer, page_setup, settings, page_setup_set);
 602
 603   if (settings)
 604     g_object_unref (settings);
 605
 606   gtk_widget_destroy (GTK_WIDGET (pd));
 607
 608 }
 609
 610
 611 static void
 612 found_printer (GtkPrinter        *printer,
 613                PrintResponseData *rdata)
 614 {
 615   GtkPrintOperation *op = rdata->op;
 616   GtkPrintOperationPrivate *priv = op->priv;
 617   GtkPrintSettings *settings = NULL;
 618   GtkPageSetup *page_setup = NULL;
 619
 620   if (rdata->loop)
 621     g_main_loop_quit (rdata->loop);
 622
 623   if (printer != NULL)
 624     {
 625       rdata->result = GTK_PRINT_OPERATION_RESULT_APPLY;
 626
 627       rdata->do_print = TRUE;
 628
 629       if (priv->print_settings)
 630         settings = gtk_print_settings_copy (priv->print_settings);
 631       else
 632         settings = gtk_print_settings_new ();
 633
 634       gtk_print_settings_set_printer (settings,
 635                                       gtk_printer_get_name (printer));
 636
 637       if (priv->default_page_setup)
 638         page_setup = gtk_page_setup_copy (priv->default_page_setup);
 639       else
 640         page_setup = gtk_page_setup_new ();
 641   }
 642
 643   finish_print (rdata, printer, page_setup, settings, FALSE);
 644
 645   if (settings)
 646     g_object_unref (settings);
 647
 648   if (page_setup)
 649     g_object_unref (page_setup);
 650 }
 651
 652 void
 653 _gtk_print_operation_platform_backend_run_dialog_async (GtkPrintOperation          *op,
 654                                                         gboolean                    show_dialog,
 655                                                         GtkWindow                  *parent,
 656                                                         GtkPrintOperationPrintFunc  print_cb)
 657 {
 658   GtkWidget *pd;
 659   PrintResponseData *rdata;
 660   const gchar *printer_name;
 661
 662   rdata = g_new (PrintResponseData, 1);
 663   rdata->op = g_object_ref (op);
 664   rdata->do_print = FALSE;
 665   rdata->do_preview = FALSE;
 666   rdata->result = GTK_PRINT_OPERATION_RESULT_CANCEL;
 667   rdata->print_cb = print_cb;
 668   rdata->parent = parent;
 669   rdata->loop = NULL;
 670   rdata->destroy = print_response_data_free;
 671
 672   if (show_dialog)
 673     {
 674       pd = get_print_dialog (op, parent);
 675       gtk_window_set_modal (GTK_WINDOW (pd), TRUE);
 676
 677       g_signal_connect (pd, "response",
 678                         G_CALLBACK (handle_print_response), rdata);
 679
 680       gtk_window_present (GTK_WINDOW (pd));
 681     }
 682   else
 683     {
 684       printer_name = NULL;
 685       if (op->priv->print_settings)
 686         printer_name = gtk_print_settings_get_printer (op->priv->print_settings);
 687
 688       find_printer (printer_name, (GFunc) found_printer, rdata);
 689     }
 690 }
 691
 692 static cairo_status_t
 693 write_preview (void                *closure,
 694                const unsigned char *data,
 695                unsigned int         length)
 696 {
 697   gint fd = GPOINTER_TO_INT (closure);
 698   gssize written;
 699
 700   while (length > 0)
 701     {
 702       written = write (fd, data, length);
 703
 704       if (written == -1)
 705         {
 706           if (errno == EAGAIN || errno == EINTR)
 707             continue;
 708
 709           return CAIRO_STATUS_WRITE_ERROR;
 710         }
 711
 712       data += written;
 713       length -= written;
 714     }
 715
 716   return CAIRO_STATUS_SUCCESS;
 717 }
 718
 719 static void
 720 close_preview (void *data)
 721 {
 722   gint fd = GPOINTER_TO_INT (data);
 723
 724   close (fd);
 725 }
 726
 727 cairo_surface_t *
 728 _gtk_print_operation_platform_backend_create_preview_surface (GtkPrintOperation *op,
 729                                                               GtkPageSetup      *page_setup,
 730                                                               gdouble           *dpi_x,
 731                                                               gdouble           *dpi_y,
 732                                                               gchar            **target)
 733 {
 734   gchar *filename;
 735   gint fd;
 736   GtkPaperSize *paper_size;
 737   gdouble w, h;
 738   cairo_surface_t *surface;
 739   static cairo_user_data_key_t key;
 740
 741   filename = g_build_filename (g_get_tmp_dir (), "previewXXXXXX.pdf", NULL);
 742   fd = g_mkstemp (filename);
 743
 744   if (fd < 0)
 745     {
 746       g_free (filename);
 747       return NULL;
 748     }
 749
 750   *target = filename;
 751
 752   paper_size = gtk_page_setup_get_paper_size (page_setup);
 753   w = gtk_paper_size_get_width (paper_size, GTK_UNIT_POINTS);
 754   h = gtk_paper_size_get_height (paper_size, GTK_UNIT_POINTS);
 755
 756   *dpi_x = *dpi_y = 72;
 757   surface = cairo_pdf_surface_create_for_stream (write_preview, GINT_TO_POINTER (fd), w, h);
 758
 759   cairo_surface_set_user_data (surface, &key, GINT_TO_POINTER (fd), close_preview);
 760
 761   return surface;
 762 }
 763
 764 void
 765 _gtk_print_operation_platform_backend_preview_start_page (GtkPrintOperation *op,
 766                                                           cairo_surface_t   *surface,
 767                                                           cairo_t           *cr)
 768 {
 769 }
 770
 771 void
 772 _gtk_print_operation_platform_backend_preview_end_page (GtkPrintOperation *op,
 773                                                         cairo_surface_t   *surface,
 774                                                         cairo_t           *cr)
 775 {
 776   cairo_show_page (cr);
 777 }
 778
 779 void
 780 _gtk_print_operation_platform_backend_resize_preview_surface (GtkPrintOperation *op,
 781                                                               GtkPageSetup      *page_setup,
 782                                                               cairo_surface_t   *surface)
 783 {
 784   GtkPaperSize *paper_size;
 785   gdouble w, h;
 786
 787   paper_size = gtk_page_setup_get_paper_size (page_setup);
 788   w = gtk_paper_size_get_width (paper_size, GTK_UNIT_POINTS);
 789   h = gtk_paper_size_get_height (paper_size, GTK_UNIT_POINTS);
 790   cairo_pdf_surface_set_size (surface, w, h);
 791 }
 792
 793
 794 GtkPrintOperationResult
 795 _gtk_print_operation_platform_backend_run_dialog (GtkPrintOperation *op,
 796                                                   gboolean           show_dialog,
 797                                                   GtkWindow         *parent,
 798                                                   gboolean          *do_print)
 799  {
 800   GtkWidget *pd;
 801   PrintResponseData rdata;
 802   gint response;
 803   const gchar *printer_name;
 804
 805   rdata.op = op;
 806   rdata.do_print = FALSE;
 807   rdata.do_preview = FALSE;
 808   rdata.result = GTK_PRINT_OPERATION_RESULT_CANCEL;
 809   rdata.print_cb = NULL;
 810   rdata.destroy = NULL;
 811   rdata.parent = parent;
 812   rdata.loop = NULL;
 813
 814   if (show_dialog)
 815     {
 816       pd = get_print_dialog (op, parent);
 817
 818       response = gtk_dialog_run (GTK_DIALOG (pd));
 819       handle_print_response (pd, response, &rdata);
 820     }
 821   else
 822     {
 823       printer_name = NULL;
 824       if (op->priv->print_settings)
 825         printer_name = gtk_print_settings_get_printer (op->priv->print_settings);
 826
 827       rdata.loop = g_main_loop_new (NULL, FALSE);
 828       find_printer (printer_name,
 829                     (GFunc) found_printer, &rdata);
 830
 831       GDK_THREADS_LEAVE ();
 832       g_main_loop_run (rdata.loop);
 833       GDK_THREADS_ENTER ();
 834
 835       g_main_loop_unref (rdata.loop);
 836       rdata.loop = NULL;
 837     }
 838
 839   *do_print = rdata.do_print;
 840
 841   return rdata.result;
 842 }
 843
 844
 845 typedef struct
 846 {
 847   GtkPageSetup         *page_setup;
 848   GtkPageSetupDoneFunc  done_cb;
 849   gpointer              data;
 850   GDestroyNotify        destroy;
 851 } PageSetupResponseData;
 852
 853 static void
 854 page_setup_data_free (gpointer data)
 855 {
 856   PageSetupResponseData *rdata = data;
 857
 858   if (rdata->page_setup)
 859     g_object_unref (rdata->page_setup);
 860
 861   g_free (rdata);
 862 }
 863
 864 static void
 865 handle_page_setup_response (GtkWidget *dialog,
 866                             gint       response,
 867                             gpointer   data)
 868 {
 869   GtkPageSetupUnixDialog *psd;
 870   PageSetupResponseData *rdata = data;
 871
 872   psd = GTK_PAGE_SETUP_UNIX_DIALOG (dialog);
 873   if (response == GTK_RESPONSE_OK)
 874     rdata->page_setup = gtk_page_setup_unix_dialog_get_page_setup (psd);
 875
 876   gtk_widget_destroy (dialog);
 877
 878   if (rdata->done_cb)
 879     rdata->done_cb (rdata->page_setup, rdata->data);
 880
 881   if (rdata->destroy)
 882     rdata->destroy (rdata);
 883 }
 884
 885 static GtkWidget *
 886 get_page_setup_dialog (GtkWindow        *parent,
 887                        GtkPageSetup     *page_setup,
 888                        GtkPrintSettings *settings)
 889 {
 890   GtkWidget *dialog;
 891
 892   dialog = gtk_page_setup_unix_dialog_new (NULL, parent);
 893   if (page_setup)
 894     gtk_page_setup_unix_dialog_set_page_setup (GTK_PAGE_SETUP_UNIX_DIALOG (dialog),
 895                                                page_setup);
 896   gtk_page_setup_unix_dialog_set_print_settings (GTK_PAGE_SETUP_UNIX_DIALOG (dialog),
 897                                                  settings);
 898
 899   return dialog;
 900 }
 901
 902 /**
 903  * gtk_print_run_page_setup_dialog:
 904  * @parent: transient parent, or %NULL
 905  * @page_setup: an existing #GtkPageSetup, or %NULL
 906  * @settings: a #GtkPrintSettings
 907  *
 908  * Runs a page setup dialog, letting the user modify the values from
 909  * @page_setup. If the user cancels the dialog, the returned #GtkPageSetup
 910  * is identical to the passed in @page_setup, otherwise it contains the
 911  * modifications done in the dialog.
 912  *
 913  * Note that this function may use a recursive mainloop to show the page
 914  * setup dialog. See gtk_print_run_page_setup_dialog_async() if this is
 915  * a problem.
 916  *
 917  * Return value: a new #GtkPageSetup
 918  *
 919  * Since: 2.10
 920  */
 921 GtkPageSetup *
 922 gtk_print_run_page_setup_dialog (GtkWindow        *parent,
 923                                  GtkPageSetup     *page_setup,
 924                                  GtkPrintSettings *settings)
 925 {
 926   GtkWidget *dialog;
 927   gint response;
 928   PageSetupResponseData rdata;
 929
 930   rdata.page_setup = NULL;
 931   rdata.done_cb = NULL;
 932   rdata.data = NULL;
 933   rdata.destroy = NULL;
 934
 935   dialog = get_page_setup_dialog (parent, page_setup, settings);
 936   response = gtk_dialog_run (GTK_DIALOG (dialog));
 937   handle_page_setup_response (dialog, response, &rdata);
 938
 939   if (rdata.page_setup)
 940     return rdata.page_setup;
 941   else if (page_setup)
 942     return gtk_page_setup_copy (page_setup);
 943   else
 944     return gtk_page_setup_new ();
 945 }
 946
 947 /**
 948  * gtk_print_run_page_setup_dialog_async:
 949  * @parent: transient parent, or %NULL
 950  * @page_setup: an existing #GtkPageSetup, or %NULL
 951  * @settings: a #GtkPrintSettings
 952  * @done_cb: a function to call when the user saves the modified page setup
 953  * @data: user data to pass to @done_cb
 954  *
 955  * Runs a page setup dialog, letting the user modify the values from @page_setup.
 956  *
 957  * In contrast to gtk_print_run_page_setup_dialog(), this function  returns after
 958  * showing the page setup dialog on platforms that support this, and calls @done_cb
 959  * from a signal handler for the ::response signal of the dialog.
 960  *
 961  * Since: 2.10
 962  */
 963 void
 964 gtk_print_run_page_setup_dialog_async (GtkWindow            *parent,
 965                                        GtkPageSetup         *page_setup,
 966                                        GtkPrintSettings     *settings,
 967                                        GtkPageSetupDoneFunc  done_cb,
 968                                        gpointer              data)
 969 {
 970   GtkWidget *dialog;
 971   PageSetupResponseData *rdata;
 972
 973   dialog = get_page_setup_dialog (parent, page_setup, settings);
 974   gtk_window_set_modal (GTK_WINDOW (dialog), TRUE);
 975
 976   rdata = g_new (PageSetupResponseData, 1);
 977   rdata->page_setup = NULL;
 978   rdata->done_cb = done_cb;
 979   rdata->data = data;
 980   rdata->destroy = page_setup_data_free;
 981
 982   g_signal_connect (dialog, "response",
 983                     G_CALLBACK (handle_page_setup_response), rdata);
 984
 985   gtk_window_present (GTK_WINDOW (dialog));
 986  }
 987
 988 struct _PrinterFinder
 989 {
 990   gboolean found_printer;
 991   GFunc func;
 992   gpointer data;
 993   gchar *printer_name;
 994   GList *backends;
 995   guint timeout_tag;
 996   GtkPrinter *printer;
 997   GtkPrinter *default_printer;
 998   GtkPrinter *first_printer;
 999 };
1000
1001 static gboolean
1002 find_printer_idle (gpointer data)
1003 {
1004   PrinterFinder *finder = data;
1005   GtkPrinter *printer;
1006
1007   if (finder->printer != NULL)
1008     printer = finder->printer;
1009   else if (finder->default_printer != NULL)
1010     printer = finder->default_printer;
1011   else if (finder->first_printer != NULL)
1012     printer = finder->first_printer;
1013   else
1014     printer = NULL;
1015
1016   finder->func (printer, finder->data);
1017
1018   printer_finder_free (finder);
1019
1020   return FALSE;
1021 }
1022
1023 static void
1024 printer_added_cb (GtkPrintBackend *backend,
1025                   GtkPrinter      *printer,
1026                   PrinterFinder   *finder)
1027 {
1028   if (finder->found_printer)
1029     return;
1030
1031   /* FIXME this skips "Print to PDF" - is this intentional ? */
1032   if (gtk_printer_is_virtual (printer))
1033     return;
1034
1035   if (finder->printer_name != NULL &&
1036       strcmp (gtk_printer_get_name (printer), finder->printer_name) == 0)
1037     {
1038       finder->printer = g_object_ref (printer);
1039       finder->found_printer = TRUE;
1040     }
1041   else if (finder->default_printer == NULL &&
1042            gtk_printer_is_default (printer))
1043     {
1044       finder->default_printer = g_object_ref (printer);
1045       if (finder->printer_name == NULL)
1046         finder->found_printer = TRUE;
1047     }
1048   else
1049     if (finder->first_printer == NULL)
1050       finder->first_printer = g_object_ref (printer);
1051
1052   if (finder->found_printer)
1053     g_idle_add (find_printer_idle, finder);
1054 }
1055
1056 static void
1057 printer_list_done_cb (GtkPrintBackend *backend,
1058                       PrinterFinder   *finder)
1059 {
1060   finder->backends = g_list_remove (finder->backends, backend);
1061
1062   g_signal_handlers_disconnect_by_func (backend, printer_added_cb, finder);
1063   g_signal_handlers_disconnect_by_func (backend, printer_list_done_cb, finder);
1064
1065   gtk_print_backend_destroy (backend);
1066   g_object_unref (backend);
1067
1068   if (finder->backends == NULL && !finder->found_printer)
1069     g_idle_add (find_printer_idle, finder);
1070 }
1071
1072 static void
1073 find_printer_init (PrinterFinder   *finder,
1074                    GtkPrintBackend *backend)
1075 {
1076   GList *list;
1077   GList *node;
1078
1079   list = gtk_print_backend_get_printer_list (backend);
1080
1081   node = list;
1082   while (node != NULL)
1083     {
1084       printer_added_cb (backend, node->data, finder);
1085       node = node->next;
1086
1087       if (finder->found_printer)
1088         break;
1089     }
1090
1091   g_list_free (list);
1092
1093   if (gtk_print_backend_printer_list_is_done (backend))
1094     {
1095       finder->backends = g_list_remove (finder->backends, backend);
1096       gtk_print_backend_destroy (backend);
1097       g_object_unref (backend);
1098     }
1099   else
1100     {
1101       g_signal_connect (backend, "printer-added",
1102                         (GCallback) printer_added_cb,
1103                         finder);
1104       g_signal_connect (backend, "printer-list-done",
1105                         (GCallback) printer_list_done_cb,
1106                         finder);
1107     }
1108
1109 }
1110
1111 static void
1112 printer_finder_free (PrinterFinder *finder)
1113 {
1114   GList *l;
1115
1116   g_free (finder->printer_name);
1117
1118   if (finder->printer)
1119     g_object_unref (finder->printer);
1120
1121   if (finder->default_printer)
1122     g_object_unref (finder->default_printer);
1123
1124   if (finder->first_printer)
1125     g_object_unref (finder->first_printer);
1126
1127   for (l = finder->backends; l != NULL; l = l->next)
1128     {
1129       GtkPrintBackend *backend = l->data;
1130       g_signal_handlers_disconnect_by_func (backend, printer_added_cb, finder);
1131       g_signal_handlers_disconnect_by_func (backend, printer_list_done_cb, finder);
1132       gtk_print_backend_destroy (backend);
1133       g_object_unref (backend);
1134     }
1135
1136   g_list_free (finder->backends);
1137
1138   g_free (finder);
1139 }
1140
1141 static void
1142 find_printer (const gchar *printer,
1143               GFunc        func,
1144               gpointer     data)
1145 {
1146   GList *node, *next;
1147   PrinterFinder *finder;
1148
1149   finder = g_new0 (PrinterFinder, 1);
1150
1151   finder->printer_name = g_strdup (printer);
1152   finder->func = func;
1153   finder->data = data;
1154
1155   finder->backends = NULL;
1156   if (g_module_supported ())
1157     finder->backends = gtk_print_backend_load_modules ();
1158
1159   for (node = finder->backends; !finder->found_printer && node != NULL; node = next)
1160     {
1161       next = node->next;
1162       find_printer_init (finder, GTK_PRINT_BACKEND (node->data));
1163     }
1164
1165   if (finder->backends == NULL && !finder->found_printer)
1166     g_idle_add (find_printer_idle, finder);
1167 }
1168
1169 #define __GTK_PRINT_OPERATION_UNIX_C__
1170 #include "gtkaliasdef.c"