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         {
  95           cairo_ps_surface_set_size (op_unix->surface, w, h);
  96           cairo_ps_surface_dsc_begin_page_setup (op_unix->surface);
  97           switch (gtk_page_setup_get_orientation (page_setup))
  98             {
  99               case GTK_PAGE_ORIENTATION_PORTRAIT:
 100               case GTK_PAGE_ORIENTATION_REVERSE_PORTRAIT:
 101                 cairo_ps_surface_dsc_comment (op_unix->surface, "%%PageOrientation: Portrait");
 102                 break;
 103
 104               case GTK_PAGE_ORIENTATION_LANDSCAPE:
 105               case GTK_PAGE_ORIENTATION_REVERSE_LANDSCAPE:
 106                 cairo_ps_surface_dsc_comment (op_unix->surface, "%%PageOrientation: Landscape");
 107                 break;
 108             }
 109          }
 110       else if (type == CAIRO_SURFACE_TYPE_PDF)
 111         {
 112           cairo_pdf_surface_set_size (op_unix->surface, w, h);
 113         }
 114     }
 115 }
 116
 117 static void
 118 unix_end_page (GtkPrintOperation *op,
 119                GtkPrintContext   *print_context)
 120 {
 121   cairo_t *cr;
 122
 123   cr = gtk_print_context_get_cairo_context (print_context);
 124
 125   if ((op->priv->manual_number_up < 2) ||
 126       ((op->priv->page_position + 1) % op->priv->manual_number_up == 0) ||
 127       (op->priv->page_position == op->priv->nr_of_pages_to_print - 1))
 128     cairo_show_page (cr);
 129 }
 130
 131 static void
 132 op_unix_free (GtkPrintOperationUnix *op_unix)
 133 {
 134   if (op_unix->job)
 135     {
 136       g_signal_handler_disconnect (op_unix->job,
 137                                    op_unix->job_status_changed_tag);
 138       g_object_unref (op_unix->job);
 139     }
 140
 141   g_free (op_unix);
 142 }
 143
 144 static gchar *
 145 shell_command_substitute_file (const gchar *cmd,
 146                                const gchar *pdf_filename,
 147                                const gchar *settings_filename,
 148                                gboolean    *pdf_filename_replaced,
 149                                gboolean    *settings_filename_replaced)
 150 {
 151   const gchar *inptr, *start;
 152   GString *final;
 153
 154   g_return_val_if_fail (cmd != NULL, NULL);
 155   g_return_val_if_fail (pdf_filename != NULL, NULL);
 156   g_return_val_if_fail (settings_filename != NULL, NULL);
 157
 158   final = g_string_new (NULL);
 159
 160   *pdf_filename_replaced = FALSE;
 161   *settings_filename_replaced = FALSE;
 162
 163   start = inptr = cmd;
 164   while ((inptr = strchr (inptr, '%')) != NULL)
 165     {
 166       g_string_append_len (final, start, inptr - start);
 167       inptr++;
 168       switch (*inptr)
 169         {
 170           case 'f':
 171             g_string_append (final, pdf_filename);
 172             *pdf_filename_replaced = TRUE;
 173             break;
 174
 175           case 's':
 176             g_string_append (final, settings_filename);
 177             *settings_filename_replaced = TRUE;
 178             break;
 179
 180           case '%':
 181             g_string_append_c (final, '%');
 182             break;
 183
 184           default:
 185             g_string_append_c (final, '%');
 186             if (*inptr)
 187               g_string_append_c (final, *inptr);
 188             break;
 189         }
 190       if (*inptr)
 191         inptr++;
 192       start = inptr;
 193     }
 194   g_string_append (final, start);
 195
 196   return g_string_free (final, FALSE);
 197 }
 198
 199 void
 200 _gtk_print_operation_platform_backend_launch_preview (GtkPrintOperation *op,
 201                                                       cairo_surface_t   *surface,
 202                                                       GtkWindow         *parent,
 203                                                       const gchar       *filename)
 204 {
 205   gint argc;
 206   gchar **argv;
 207   gchar *cmd;
 208   gchar *preview_cmd;
 209   GtkSettings *settings;
 210   GtkPrintSettings *print_settings = NULL;
 211   GtkPageSetup *page_setup;
 212   GKeyFile *key_file = NULL;
 213   gchar *data = NULL;
 214   gsize data_len;
 215   gchar *settings_filename = NULL;
 216   gchar *quoted_filename;
 217   gchar *quoted_settings_filename;
 218   gboolean filename_used = FALSE;
 219   gboolean settings_used = FALSE;
 220   GdkScreen *screen;
 221   GError *error = NULL;
 222   gint fd;
 223   gboolean retval;
 224
 225   cairo_surface_destroy (surface);
 226
 227   if (parent)
 228     screen = gtk_window_get_screen (parent);
 229   else
 230     screen = gdk_screen_get_default ();
 231
 232   fd = g_file_open_tmp ("settingsXXXXXX.ini", &settings_filename, &error);
 233   if (fd < 0)
 234     goto out;
 235
 236   key_file = g_key_file_new ();
 237
 238   print_settings = gtk_print_settings_copy (gtk_print_operation_get_print_settings (op));
 239
 240   if (print_settings != NULL)
 241     {
 242       gtk_print_settings_set_reverse (print_settings, FALSE);
 243       gtk_print_settings_set_page_set (print_settings, GTK_PAGE_SET_ALL);
 244       gtk_print_settings_set_scale (print_settings, 1.0);
 245       gtk_print_settings_set_number_up (print_settings, 1);
 246       gtk_print_settings_set_number_up_layout (print_settings, GTK_NUMBER_UP_LAYOUT_LEFT_TO_RIGHT_TOP_TO_BOTTOM);
 247
 248       /*  These removals are neccessary because cups-* settings have higher priority
 249        *  than normal settings.
 250        */
 251       gtk_print_settings_unset (print_settings, "cups-reverse");
 252       gtk_print_settings_unset (print_settings, "cups-page-set");
 253       gtk_print_settings_unset (print_settings, "cups-scale");
 254       gtk_print_settings_unset (print_settings, "cups-number-up");
 255       gtk_print_settings_unset (print_settings, "cups-number-up-layout");
 256
 257       gtk_print_settings_to_key_file (print_settings, key_file, NULL);
 258       g_object_unref (print_settings);
 259     }
 260
 261   page_setup = gtk_print_context_get_page_setup (op->priv->print_context);
 262   gtk_page_setup_to_key_file (page_setup, key_file, NULL);
 263
 264   g_key_file_set_string (key_file, "Print Job", "title", op->priv->job_name);
 265
 266   data = g_key_file_to_data (key_file, &data_len, &error);
 267   if (!data)
 268     goto out;
 269
 270   retval = g_file_set_contents (settings_filename, data, data_len, &error);
 271   if (!retval)
 272     goto out;
 273
 274   settings = gtk_settings_get_for_screen (screen);
 275   g_object_get (settings, "gtk-print-preview-command", &preview_cmd, NULL);
 276
 277   quoted_filename = g_shell_quote (filename);
 278   quoted_settings_filename = g_shell_quote (settings_filename);
 279   cmd = shell_command_substitute_file (preview_cmd, quoted_filename, quoted_settings_filename, &filename_used, &settings_used);
 280   g_shell_parse_argv (cmd, &argc, &argv, &error);
 281
 282   g_free (preview_cmd);
 283   g_free (quoted_filename);
 284   g_free (quoted_settings_filename);
 285   g_free (cmd);
 286
 287   if (error != NULL)
 288     goto out;
 289
 290   gdk_spawn_on_screen (screen, NULL, argv, NULL, G_SPAWN_SEARCH_PATH, NULL, NULL, NULL, &error);
 291
 292   g_strfreev (argv);
 293
 294  out:
 295   if (error != NULL)
 296     {
 297       GtkWidget *edialog;
 298       edialog = gtk_message_dialog_new (parent,
 299                                         GTK_DIALOG_DESTROY_WITH_PARENT,
 300                                         GTK_MESSAGE_ERROR,
 301                                         GTK_BUTTONS_CLOSE,
 302                                         _("Error launching preview") /* FIXME better text */);
 303       gtk_message_dialog_format_secondary_text (GTK_MESSAGE_DIALOG (edialog),
 304                                                 "%s", error->message);
 305       g_signal_connect (edialog, "response",
 306                         G_CALLBACK (gtk_widget_destroy), NULL);
 307
 308       gtk_window_present (GTK_WINDOW (edialog));
 309
 310       g_error_free (error);
 311
 312       filename_used = FALSE;
 313       settings_used = FALSE;
 314    }
 315
 316   if (!filename_used)
 317     g_unlink (filename);
 318
 319   if (!settings_used)
 320     g_unlink (settings_filename);
 321
 322   if (fd > 0)
 323     close (fd);
 324
 325   if (key_file)
 326     g_key_file_free (key_file);
 327   g_free (data);
 328   g_free (settings_filename);
 329 }
 330
 331 static void
 332 unix_finish_send  (GtkPrintJob *job,
 333                    gpointer     user_data,
 334                    GError      *error)
 335 {
 336   GtkPrintOperation *op = (GtkPrintOperation *) user_data;
 337   GtkPrintOperationUnix *op_unix = op->priv->platform_data;
 338
 339   if (error != NULL)
 340     {
 341       GtkWidget *edialog;
 342       edialog = gtk_message_dialog_new (op_unix->parent,
 343                                         GTK_DIALOG_DESTROY_WITH_PARENT,
 344                                         GTK_MESSAGE_ERROR,
 345                                         GTK_BUTTONS_CLOSE,
 346                                         _("Error printing") /* FIXME better text */);
 347       gtk_message_dialog_format_secondary_text (GTK_MESSAGE_DIALOG (edialog),
 348                                                 "%s", error->message);
 349       gtk_window_set_modal (GTK_WINDOW (edialog), TRUE);
 350       g_signal_connect (edialog, "response",
 351                         G_CALLBACK (gtk_widget_destroy), NULL);
 352
 353       gtk_window_present (GTK_WINDOW (edialog));
 354     }
 355
 356   op_unix->data_sent = TRUE;
 357
 358   if (op_unix->loop)
 359     g_main_loop_quit (op_unix->loop);
 360
 361   g_object_unref (op);
 362 }
 363
 364 static void
 365 unix_end_run (GtkPrintOperation *op,
 366               gboolean           wait,
 367               gboolean           cancelled)
 368 {
 369   GtkPrintOperationUnix *op_unix = op->priv->platform_data;
 370
 371   cairo_surface_finish (op_unix->surface);
 372
 373   if (cancelled)
 374     return;
 375
 376   if (wait)
 377     op_unix->loop = g_main_loop_new (NULL, FALSE);
 378
 379   /* TODO: Check for error */
 380   if (op_unix->job != NULL)
 381     {
 382       g_object_ref (op);
 383       gtk_print_job_send (op_unix->job,
 384                           unix_finish_send,
 385                           op, NULL);
 386     }
 387
 388   if (wait)
 389     {
 390       g_object_ref (op);
 391       if (!op_unix->data_sent)
 392         {
 393           GDK_THREADS_LEAVE ();
 394           g_main_loop_run (op_unix->loop);
 395           GDK_THREADS_ENTER ();
 396         }
 397       g_main_loop_unref (op_unix->loop);
 398       op_unix->loop = NULL;
 399       g_object_unref (op);
 400     }
 401 }
 402
 403 static void
 404 job_status_changed_cb (GtkPrintJob       *job,
 405                        GtkPrintOperation *op)
 406 {
 407   _gtk_print_operation_set_status (op, gtk_print_job_get_status (job), NULL);
 408 }
 409
 410
 411 static void
 412 print_setup_changed_cb (GtkPrintUnixDialog *print_dialog,
 413                         GParamSpec         *pspec,
 414                         gpointer            user_data)
 415 {
 416   GtkPageSetup             *page_setup;
 417   GtkPrintSettings         *print_settings;
 418   GtkPrintOperation        *op = user_data;
 419   GtkPrintOperationPrivate *priv = op->priv;
 420
 421   page_setup = gtk_print_unix_dialog_get_page_setup (print_dialog);
 422   print_settings = gtk_print_unix_dialog_get_settings (print_dialog);
 423
 424   g_signal_emit_by_name (op,
 425                          "update-custom-widget",
 426                          priv->custom_widget,
 427                          page_setup,
 428                          print_settings);
 429 }
 430
 431 static GtkWidget *
 432 get_print_dialog (GtkPrintOperation *op,
 433                   GtkWindow         *parent)
 434 {
 435   GtkPrintOperationPrivate *priv = op->priv;
 436   GtkWidget *pd, *label;
 437   const gchar *custom_tab_label;
 438
 439   pd = gtk_print_unix_dialog_new (NULL, parent);
 440
 441   gtk_print_unix_dialog_set_manual_capabilities (GTK_PRINT_UNIX_DIALOG (pd),
 442                                                  GTK_PRINT_CAPABILITY_PAGE_SET |
 443                                                  GTK_PRINT_CAPABILITY_COPIES |
 444                                                  GTK_PRINT_CAPABILITY_COLLATE |
 445                                                  GTK_PRINT_CAPABILITY_REVERSE |
 446                                                  GTK_PRINT_CAPABILITY_SCALE |
 447                                                  GTK_PRINT_CAPABILITY_PREVIEW |
 448                                                  GTK_PRINT_CAPABILITY_NUMBER_UP |
 449                                                  GTK_PRINT_CAPABILITY_NUMBER_UP_LAYOUT);
 450
 451   if (priv->print_settings)
 452     gtk_print_unix_dialog_set_settings (GTK_PRINT_UNIX_DIALOG (pd),
 453                                         priv->print_settings);
 454
 455   if (priv->default_page_setup)
 456     gtk_print_unix_dialog_set_page_setup (GTK_PRINT_UNIX_DIALOG (pd),
 457                                           priv->default_page_setup);
 458
 459   gtk_print_unix_dialog_set_embed_page_setup (GTK_PRINT_UNIX_DIALOG (pd),
 460                                               priv->embed_page_setup);
 461
 462   gtk_print_unix_dialog_set_current_page (GTK_PRINT_UNIX_DIALOG (pd),
 463                                           priv->current_page);
 464
 465   gtk_print_unix_dialog_set_support_selection (GTK_PRINT_UNIX_DIALOG (pd),
 466                                                priv->support_selection);
 467
 468   gtk_print_unix_dialog_set_has_selection (GTK_PRINT_UNIX_DIALOG (pd),
 469                                            priv->has_selection);
 470
 471   g_signal_emit_by_name (op, "create-custom-widget",
 472                          &priv->custom_widget);
 473
 474   if (priv->custom_widget)
 475     {
 476       custom_tab_label = priv->custom_tab_label;
 477
 478       if (custom_tab_label == NULL)
 479         {
 480           custom_tab_label = g_get_application_name ();
 481           if (custom_tab_label == NULL)
 482             custom_tab_label = _("Application");
 483         }
 484
 485       label = gtk_label_new (custom_tab_label);
 486
 487       gtk_print_unix_dialog_add_custom_tab (GTK_PRINT_UNIX_DIALOG (pd),
 488                                             priv->custom_widget, label);
 489
 490       g_signal_connect (pd, "notify::selected-printer", (GCallback) print_setup_changed_cb, op);
 491       g_signal_connect (pd, "notify::page-setup", (GCallback) print_setup_changed_cb, op);
 492     }
 493
 494   return pd;
 495 }
 496
 497 typedef struct
 498 {
 499   GtkPrintOperation           *op;
 500   gboolean                     do_print;
 501   gboolean                     do_preview;
 502   GtkPrintOperationResult      result;
 503   GtkPrintOperationPrintFunc   print_cb;
 504   GDestroyNotify               destroy;
 505   GtkWindow                   *parent;
 506   GMainLoop                   *loop;
 507 } PrintResponseData;
 508
 509 static void
 510 print_response_data_free (gpointer data)
 511 {
 512   PrintResponseData *rdata = data;
 513
 514   g_object_unref (rdata->op);
 515   g_free (rdata);
 516 }
 517
 518 static void
 519 finish_print (PrintResponseData *rdata,
 520               GtkPrinter        *printer,
 521               GtkPageSetup      *page_setup,
 522               GtkPrintSettings  *settings,
 523               gboolean           page_setup_set)
 524 {
 525   GtkPrintOperation *op = rdata->op;
 526   GtkPrintOperationPrivate *priv = op->priv;
 527   GtkPrintJob *job;
 528
 529   if (rdata->do_print)
 530     {
 531       gtk_print_operation_set_print_settings (op, settings);
 532       priv->print_context = _gtk_print_context_new (op);
 533
 534       if (page_setup != NULL &&
 535           (gtk_print_operation_get_default_page_setup (op) == NULL ||
 536            page_setup_set))
 537         gtk_print_operation_set_default_page_setup (op, page_setup);
 538
 539       _gtk_print_context_set_page_setup (priv->print_context, page_setup);
 540
 541       if (!rdata->do_preview)
 542         {
 543           GtkPrintOperationUnix *op_unix;
 544           cairo_t *cr;
 545
 546           op_unix = g_new0 (GtkPrintOperationUnix, 1);
 547           priv->platform_data = op_unix;
 548           priv->free_platform_data = (GDestroyNotify) op_unix_free;
 549           op_unix->parent = rdata->parent;
 550
 551           priv->start_page = unix_start_page;
 552           priv->end_page = unix_end_page;
 553           priv->end_run = unix_end_run;
 554
 555           job = gtk_print_job_new (priv->job_name, printer, settings, page_setup);
 556           op_unix->job = job;
 557           gtk_print_job_set_track_print_status (job, priv->track_print_status);
 558
 559           op_unix->surface = gtk_print_job_get_surface (job, &priv->error);
 560           if (op_unix->surface == NULL)
 561             {
 562               rdata->result = GTK_PRINT_OPERATION_RESULT_ERROR;
 563               rdata->do_print = FALSE;
 564               goto out;
 565             }
 566
 567           cr = cairo_create (op_unix->surface);
 568           gtk_print_context_set_cairo_context (priv->print_context, cr, 72, 72);
 569           cairo_destroy (cr);
 570
 571           _gtk_print_operation_set_status (op, gtk_print_job_get_status (job), NULL);
 572
 573           op_unix->job_status_changed_tag =
 574             g_signal_connect (job, "status-changed",
 575                               G_CALLBACK (job_status_changed_cb), op);
 576
 577           priv->print_pages = job->print_pages;
 578           priv->page_ranges = job->page_ranges;
 579           priv->num_page_ranges = job->num_page_ranges;
 580
 581           priv->manual_num_copies = job->num_copies;
 582           priv->manual_collation = job->collate;
 583           priv->manual_reverse = job->reverse;
 584           priv->manual_page_set = job->page_set;
 585           priv->manual_scale = job->scale;
 586           priv->manual_orientation = job->rotate_to_orientation;
 587           priv->manual_number_up = job->number_up;
 588           priv->manual_number_up_layout = job->number_up_layout;
 589         }
 590     }
 591  out:
 592   if (rdata->print_cb)
 593     rdata->print_cb (op, rdata->parent, rdata->do_print, rdata->result);
 594
 595   if (rdata->destroy)
 596     rdata->destroy (rdata);
 597 }
 598
 599 static void
 600 handle_print_response (GtkWidget *dialog,
 601                        gint       response,
 602                        gpointer   data)
 603 {
 604   GtkPrintUnixDialog *pd = GTK_PRINT_UNIX_DIALOG (dialog);
 605   PrintResponseData *rdata = data;
 606   GtkPrintSettings *settings = NULL;
 607   GtkPageSetup *page_setup = NULL;
 608   GtkPrinter *printer = NULL;
 609   gboolean page_setup_set = FALSE;
 610
 611   if (response == GTK_RESPONSE_OK)
 612     {
 613       printer = gtk_print_unix_dialog_get_selected_printer (GTK_PRINT_UNIX_DIALOG (pd));
 614
 615       rdata->result = GTK_PRINT_OPERATION_RESULT_APPLY;
 616       rdata->do_preview = FALSE;
 617       if (printer != NULL)
 618         rdata->do_print = TRUE;
 619     }
 620   else if (response == GTK_RESPONSE_APPLY)
 621     {
 622       /* print preview */
 623       rdata->result = GTK_PRINT_OPERATION_RESULT_APPLY;
 624       rdata->do_preview = TRUE;
 625       rdata->do_print = TRUE;
 626
 627       rdata->op->priv->action = GTK_PRINT_OPERATION_ACTION_PREVIEW;
 628     }
 629
 630   if (rdata->do_print)
 631     {
 632       settings = gtk_print_unix_dialog_get_settings (GTK_PRINT_UNIX_DIALOG (pd));
 633       page_setup = gtk_print_unix_dialog_get_page_setup (GTK_PRINT_UNIX_DIALOG (pd));
 634       page_setup_set = gtk_print_unix_dialog_get_page_setup_set (GTK_PRINT_UNIX_DIALOG (pd));
 635
 636       g_signal_emit_by_name (rdata->op, "custom-widget-apply", rdata->op->priv->custom_widget);
 637     }
 638
 639   finish_print (rdata, printer, page_setup, settings, page_setup_set);
 640
 641   if (settings)
 642     g_object_unref (settings);
 643
 644   gtk_widget_destroy (GTK_WIDGET (pd));
 645
 646 }
 647
 648
 649 static void
 650 found_printer (GtkPrinter        *printer,
 651                PrintResponseData *rdata)
 652 {
 653   GtkPrintOperation *op = rdata->op;
 654   GtkPrintOperationPrivate *priv = op->priv;
 655   GtkPrintSettings *settings = NULL;
 656   GtkPageSetup *page_setup = NULL;
 657
 658   if (rdata->loop)
 659     g_main_loop_quit (rdata->loop);
 660
 661   if (printer != NULL)
 662     {
 663       rdata->result = GTK_PRINT_OPERATION_RESULT_APPLY;
 664
 665       rdata->do_print = TRUE;
 666
 667       if (priv->print_settings)
 668         settings = gtk_print_settings_copy (priv->print_settings);
 669       else
 670         settings = gtk_print_settings_new ();
 671
 672       gtk_print_settings_set_printer (settings,
 673                                       gtk_printer_get_name (printer));
 674
 675       if (priv->default_page_setup)
 676         page_setup = gtk_page_setup_copy (priv->default_page_setup);
 677       else
 678         page_setup = gtk_page_setup_new ();
 679   }
 680
 681   finish_print (rdata, printer, page_setup, settings, FALSE);
 682
 683   if (settings)
 684     g_object_unref (settings);
 685
 686   if (page_setup)
 687     g_object_unref (page_setup);
 688 }
 689
 690 void
 691 _gtk_print_operation_platform_backend_run_dialog_async (GtkPrintOperation          *op,
 692                                                         gboolean                    show_dialog,
 693                                                         GtkWindow                  *parent,
 694                                                         GtkPrintOperationPrintFunc  print_cb)
 695 {
 696   GtkWidget *pd;
 697   PrintResponseData *rdata;
 698   const gchar *printer_name;
 699
 700   rdata = g_new (PrintResponseData, 1);
 701   rdata->op = g_object_ref (op);
 702   rdata->do_print = FALSE;
 703   rdata->do_preview = FALSE;
 704   rdata->result = GTK_PRINT_OPERATION_RESULT_CANCEL;
 705   rdata->print_cb = print_cb;
 706   rdata->parent = parent;
 707   rdata->loop = NULL;
 708   rdata->destroy = print_response_data_free;
 709
 710   if (show_dialog)
 711     {
 712       pd = get_print_dialog (op, parent);
 713       gtk_window_set_modal (GTK_WINDOW (pd), TRUE);
 714
 715       g_signal_connect (pd, "response",
 716                         G_CALLBACK (handle_print_response), rdata);
 717
 718       gtk_window_present (GTK_WINDOW (pd));
 719     }
 720   else
 721     {
 722       printer_name = NULL;
 723       if (op->priv->print_settings)
 724         printer_name = gtk_print_settings_get_printer (op->priv->print_settings);
 725
 726       find_printer (printer_name, (GFunc) found_printer, rdata);
 727     }
 728 }
 729
 730 static cairo_status_t
 731 write_preview (void                *closure,
 732                const unsigned char *data,
 733                unsigned int         length)
 734 {
 735   gint fd = GPOINTER_TO_INT (closure);
 736   gssize written;
 737
 738   while (length > 0)
 739     {
 740       written = write (fd, data, length);
 741
 742       if (written == -1)
 743         {
 744           if (errno == EAGAIN || errno == EINTR)
 745             continue;
 746
 747           return CAIRO_STATUS_WRITE_ERROR;
 748         }
 749
 750       data += written;
 751       length -= written;
 752     }
 753
 754   return CAIRO_STATUS_SUCCESS;
 755 }
 756
 757 static void
 758 close_preview (void *data)
 759 {
 760   gint fd = GPOINTER_TO_INT (data);
 761
 762   close (fd);
 763 }
 764
 765 cairo_surface_t *
 766 _gtk_print_operation_platform_backend_create_preview_surface (GtkPrintOperation *op,
 767                                                               GtkPageSetup      *page_setup,
 768                                                               gdouble           *dpi_x,
 769                                                               gdouble           *dpi_y,
 770                                                               gchar            **target)
 771 {
 772   gchar *filename;
 773   gint fd;
 774   GtkPaperSize *paper_size;
 775   gdouble w, h;
 776   cairo_surface_t *surface;
 777   static cairo_user_data_key_t key;
 778
 779   filename = g_build_filename (g_get_tmp_dir (), "previewXXXXXX.pdf", NULL);
 780   fd = g_mkstemp (filename);
 781
 782   if (fd < 0)
 783     {
 784       g_free (filename);
 785       return NULL;
 786     }
 787
 788   *target = filename;
 789
 790   paper_size = gtk_page_setup_get_paper_size (page_setup);
 791   w = gtk_paper_size_get_width (paper_size, GTK_UNIT_POINTS);
 792   h = gtk_paper_size_get_height (paper_size, GTK_UNIT_POINTS);
 793
 794   *dpi_x = *dpi_y = 72;
 795   surface = cairo_pdf_surface_create_for_stream (write_preview, GINT_TO_POINTER (fd), w, h);
 796
 797   cairo_surface_set_user_data (surface, &key, GINT_TO_POINTER (fd), close_preview);
 798
 799   return surface;
 800 }
 801
 802 void
 803 _gtk_print_operation_platform_backend_preview_start_page (GtkPrintOperation *op,
 804                                                           cairo_surface_t   *surface,
 805                                                           cairo_t           *cr)
 806 {
 807 }
 808
 809 void
 810 _gtk_print_operation_platform_backend_preview_end_page (GtkPrintOperation *op,
 811                                                         cairo_surface_t   *surface,
 812                                                         cairo_t           *cr)
 813 {
 814   cairo_show_page (cr);
 815 }
 816
 817 void
 818 _gtk_print_operation_platform_backend_resize_preview_surface (GtkPrintOperation *op,
 819                                                               GtkPageSetup      *page_setup,
 820                                                               cairo_surface_t   *surface)
 821 {
 822   GtkPaperSize *paper_size;
 823   gdouble w, h;
 824
 825   paper_size = gtk_page_setup_get_paper_size (page_setup);
 826   w = gtk_paper_size_get_width (paper_size, GTK_UNIT_POINTS);
 827   h = gtk_paper_size_get_height (paper_size, GTK_UNIT_POINTS);
 828   cairo_pdf_surface_set_size (surface, w, h);
 829 }
 830
 831
 832 GtkPrintOperationResult
 833 _gtk_print_operation_platform_backend_run_dialog (GtkPrintOperation *op,
 834                                                   gboolean           show_dialog,
 835                                                   GtkWindow         *parent,
 836                                                   gboolean          *do_print)
 837  {
 838   GtkWidget *pd;
 839   PrintResponseData rdata;
 840   gint response;
 841   const gchar *printer_name;
 842
 843   rdata.op = op;
 844   rdata.do_print = FALSE;
 845   rdata.do_preview = FALSE;
 846   rdata.result = GTK_PRINT_OPERATION_RESULT_CANCEL;
 847   rdata.print_cb = NULL;
 848   rdata.destroy = NULL;
 849   rdata.parent = parent;
 850   rdata.loop = NULL;
 851
 852   if (show_dialog)
 853     {
 854       pd = get_print_dialog (op, parent);
 855
 856       response = gtk_dialog_run (GTK_DIALOG (pd));
 857       handle_print_response (pd, response, &rdata);
 858     }
 859   else
 860     {
 861       printer_name = NULL;
 862       if (op->priv->print_settings)
 863         printer_name = gtk_print_settings_get_printer (op->priv->print_settings);
 864
 865       rdata.loop = g_main_loop_new (NULL, FALSE);
 866       find_printer (printer_name,
 867                     (GFunc) found_printer, &rdata);
 868
 869       GDK_THREADS_LEAVE ();
 870       g_main_loop_run (rdata.loop);
 871       GDK_THREADS_ENTER ();
 872
 873       g_main_loop_unref (rdata.loop);
 874       rdata.loop = NULL;
 875     }
 876
 877   *do_print = rdata.do_print;
 878
 879   return rdata.result;
 880 }
 881
 882
 883 typedef struct
 884 {
 885   GtkPageSetup         *page_setup;
 886   GtkPageSetupDoneFunc  done_cb;
 887   gpointer              data;
 888   GDestroyNotify        destroy;
 889 } PageSetupResponseData;
 890
 891 static void
 892 page_setup_data_free (gpointer data)
 893 {
 894   PageSetupResponseData *rdata = data;
 895
 896   if (rdata->page_setup)
 897     g_object_unref (rdata->page_setup);
 898
 899   g_free (rdata);
 900 }
 901
 902 static void
 903 handle_page_setup_response (GtkWidget *dialog,
 904                             gint       response,
 905                             gpointer   data)
 906 {
 907   GtkPageSetupUnixDialog *psd;
 908   PageSetupResponseData *rdata = data;
 909
 910   psd = GTK_PAGE_SETUP_UNIX_DIALOG (dialog);
 911   if (response == GTK_RESPONSE_OK)
 912     rdata->page_setup = gtk_page_setup_unix_dialog_get_page_setup (psd);
 913
 914   gtk_widget_destroy (dialog);
 915
 916   if (rdata->done_cb)
 917     rdata->done_cb (rdata->page_setup, rdata->data);
 918
 919   if (rdata->destroy)
 920     rdata->destroy (rdata);
 921 }
 922
 923 static GtkWidget *
 924 get_page_setup_dialog (GtkWindow        *parent,
 925                        GtkPageSetup     *page_setup,
 926                        GtkPrintSettings *settings)
 927 {
 928   GtkWidget *dialog;
 929
 930   dialog = gtk_page_setup_unix_dialog_new (NULL, parent);
 931   if (page_setup)
 932     gtk_page_setup_unix_dialog_set_page_setup (GTK_PAGE_SETUP_UNIX_DIALOG (dialog),
 933                                                page_setup);
 934   gtk_page_setup_unix_dialog_set_print_settings (GTK_PAGE_SETUP_UNIX_DIALOG (dialog),
 935                                                  settings);
 936
 937   return dialog;
 938 }
 939
 940 /**
 941  * gtk_print_run_page_setup_dialog:
 942  * @parent: transient parent, or %NULL
 943  * @page_setup: an existing #GtkPageSetup, or %NULL
 944  * @settings: a #GtkPrintSettings
 945  *
 946  * Runs a page setup dialog, letting the user modify the values from
 947  * @page_setup. If the user cancels the dialog, the returned #GtkPageSetup
 948  * is identical to the passed in @page_setup, otherwise it contains the
 949  * modifications done in the dialog.
 950  *
 951  * Note that this function may use a recursive mainloop to show the page
 952  * setup dialog. See gtk_print_run_page_setup_dialog_async() if this is
 953  * a problem.
 954  *
 955  * Return value: a new #GtkPageSetup
 956  *
 957  * Since: 2.10
 958  */
 959 GtkPageSetup *
 960 gtk_print_run_page_setup_dialog (GtkWindow        *parent,
 961                                  GtkPageSetup     *page_setup,
 962                                  GtkPrintSettings *settings)
 963 {
 964   GtkWidget *dialog;
 965   gint response;
 966   PageSetupResponseData rdata;
 967
 968   rdata.page_setup = NULL;
 969   rdata.done_cb = NULL;
 970   rdata.data = NULL;
 971   rdata.destroy = NULL;
 972
 973   dialog = get_page_setup_dialog (parent, page_setup, settings);
 974   response = gtk_dialog_run (GTK_DIALOG (dialog));
 975   handle_page_setup_response (dialog, response, &rdata);
 976
 977   if (rdata.page_setup)
 978     return rdata.page_setup;
 979   else if (page_setup)
 980     return gtk_page_setup_copy (page_setup);
 981   else
 982     return gtk_page_setup_new ();
 983 }
 984
 985 /**
 986  * gtk_print_run_page_setup_dialog_async:
 987  * @parent: transient parent, or %NULL
 988  * @page_setup: an existing #GtkPageSetup, or %NULL
 989  * @settings: a #GtkPrintSettings
 990  * @done_cb: a function to call when the user saves the modified page setup
 991  * @data: user data to pass to @done_cb
 992  *
 993  * Runs a page setup dialog, letting the user modify the values from @page_setup.
 994  *
 995  * In contrast to gtk_print_run_page_setup_dialog(), this function  returns after
 996  * showing the page setup dialog on platforms that support this, and calls @done_cb
 997  * from a signal handler for the ::response signal of the dialog.
 998  *
 999  * Since: 2.10
1000  */
1001 void
1002 gtk_print_run_page_setup_dialog_async (GtkWindow            *parent,
1003                                        GtkPageSetup         *page_setup,
1004                                        GtkPrintSettings     *settings,
1005                                        GtkPageSetupDoneFunc  done_cb,
1006                                        gpointer              data)
1007 {
1008   GtkWidget *dialog;
1009   PageSetupResponseData *rdata;
1010
1011   dialog = get_page_setup_dialog (parent, page_setup, settings);
1012   gtk_window_set_modal (GTK_WINDOW (dialog), TRUE);
1013
1014   rdata = g_new (PageSetupResponseData, 1);
1015   rdata->page_setup = NULL;
1016   rdata->done_cb = done_cb;
1017   rdata->data = data;
1018   rdata->destroy = page_setup_data_free;
1019
1020   g_signal_connect (dialog, "response",
1021                     G_CALLBACK (handle_page_setup_response), rdata);
1022
1023   gtk_window_present (GTK_WINDOW (dialog));
1024  }
1025
1026 struct _PrinterFinder
1027 {
1028   gboolean found_printer;
1029   GFunc func;
1030   gpointer data;
1031   gchar *printer_name;
1032   GList *backends;
1033   guint timeout_tag;
1034   GtkPrinter *printer;
1035   GtkPrinter *default_printer;
1036   GtkPrinter *first_printer;
1037 };
1038
1039 static gboolean
1040 find_printer_idle (gpointer data)
1041 {
1042   PrinterFinder *finder = data;
1043   GtkPrinter *printer;
1044
1045   if (finder->printer != NULL)
1046     printer = finder->printer;
1047   else if (finder->default_printer != NULL)
1048     printer = finder->default_printer;
1049   else if (finder->first_printer != NULL)
1050     printer = finder->first_printer;
1051   else
1052     printer = NULL;
1053
1054   finder->func (printer, finder->data);
1055
1056   printer_finder_free (finder);
1057
1058   return FALSE;
1059 }
1060
1061 static void
1062 printer_added_cb (GtkPrintBackend *backend,
1063                   GtkPrinter      *printer,
1064                   PrinterFinder   *finder)
1065 {
1066   if (finder->found_printer)
1067     return;
1068
1069   /* FIXME this skips "Print to PDF" - is this intentional ? */
1070   if (gtk_printer_is_virtual (printer))
1071     return;
1072
1073   if (finder->printer_name != NULL &&
1074       strcmp (gtk_printer_get_name (printer), finder->printer_name) == 0)
1075     {
1076       finder->printer = g_object_ref (printer);
1077       finder->found_printer = TRUE;
1078     }
1079   else if (finder->default_printer == NULL &&
1080            gtk_printer_is_default (printer))
1081     {
1082       finder->default_printer = g_object_ref (printer);
1083       if (finder->printer_name == NULL)
1084         finder->found_printer = TRUE;
1085     }
1086   else
1087     if (finder->first_printer == NULL)
1088       finder->first_printer = g_object_ref (printer);
1089
1090   if (finder->found_printer)
1091     g_idle_add (find_printer_idle, finder);
1092 }
1093
1094 static void
1095 printer_list_done_cb (GtkPrintBackend *backend,
1096                       PrinterFinder   *finder)
1097 {
1098   finder->backends = g_list_remove (finder->backends, backend);
1099
1100   g_signal_handlers_disconnect_by_func (backend, printer_added_cb, finder);
1101   g_signal_handlers_disconnect_by_func (backend, printer_list_done_cb, finder);
1102
1103   gtk_print_backend_destroy (backend);
1104   g_object_unref (backend);
1105
1106   if (finder->backends == NULL && !finder->found_printer)
1107     g_idle_add (find_printer_idle, finder);
1108 }
1109
1110 static void
1111 find_printer_init (PrinterFinder   *finder,
1112                    GtkPrintBackend *backend)
1113 {
1114   GList *list;
1115   GList *node;
1116
1117   list = gtk_print_backend_get_printer_list (backend);
1118
1119   node = list;
1120   while (node != NULL)
1121     {
1122       printer_added_cb (backend, node->data, finder);
1123       node = node->next;
1124
1125       if (finder->found_printer)
1126         break;
1127     }
1128
1129   g_list_free (list);
1130
1131   if (gtk_print_backend_printer_list_is_done (backend))
1132     {
1133       finder->backends = g_list_remove (finder->backends, backend);
1134       gtk_print_backend_destroy (backend);
1135       g_object_unref (backend);
1136     }
1137   else
1138     {
1139       g_signal_connect (backend, "printer-added",
1140                         (GCallback) printer_added_cb,
1141                         finder);
1142       g_signal_connect (backend, "printer-list-done",
1143                         (GCallback) printer_list_done_cb,
1144                         finder);
1145     }
1146
1147 }
1148
1149 static void
1150 printer_finder_free (PrinterFinder *finder)
1151 {
1152   GList *l;
1153
1154   g_free (finder->printer_name);
1155
1156   if (finder->printer)
1157     g_object_unref (finder->printer);
1158
1159   if (finder->default_printer)
1160     g_object_unref (finder->default_printer);
1161
1162   if (finder->first_printer)
1163     g_object_unref (finder->first_printer);
1164
1165   for (l = finder->backends; l != NULL; l = l->next)
1166     {
1167       GtkPrintBackend *backend = l->data;
1168       g_signal_handlers_disconnect_by_func (backend, printer_added_cb, finder);
1169       g_signal_handlers_disconnect_by_func (backend, printer_list_done_cb, finder);
1170       gtk_print_backend_destroy (backend);
1171       g_object_unref (backend);
1172     }
1173
1174   g_list_free (finder->backends);
1175
1176   g_free (finder);
1177 }
1178
1179 static void
1180 find_printer (const gchar *printer,
1181               GFunc        func,
1182               gpointer     data)
1183 {
1184   GList *node, *next;
1185   PrinterFinder *finder;
1186
1187   finder = g_new0 (PrinterFinder, 1);
1188
1189   finder->printer_name = g_strdup (printer);
1190   finder->func = func;
1191   finder->data = data;
1192
1193   finder->backends = NULL;
1194   if (g_module_supported ())
1195     finder->backends = gtk_print_backend_load_modules ();
1196
1197   for (node = finder->backends; !finder->found_printer && node != NULL; node = next)
1198     {
1199       next = node->next;
1200       find_printer_init (finder, GTK_PRINT_BACKEND (node->data));
1201     }
1202
1203   if (finder->backends == NULL && !finder->found_printer)
1204     g_idle_add (find_printer_idle, finder);
1205 }
1206
1207 #define __GTK_PRINT_OPERATION_UNIX_C__
1208 #include "gtkaliasdef.c"