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 "gtkmarshal.h"
  36 #include "gtkmessagedialog.h"
  37
  38 #include <cairo-pdf.h>
  39 #include <cairo-ps.h>
  40 #include "gtkprivate.h"
  41 #include "gtkprintunixdialog.h"
  42 #include "gtkpagesetupunixdialog.h"
  43 #include "gtkprintbackend.h"
  44 #include "gtkprinter.h"
  45 #include "gtkprinter-private.h"
  46 #include "gtkprintjob.h"
  47 #include "gtklabel.h"
  48 #include "gtkintl.h"
  49 #include "gtkalias.h"
  50
  51 typedef struct
  52 {
  53   GtkWindow *parent;        /* just in case we need to throw error dialogs */
  54   GMainLoop *loop;
  55   gboolean data_sent;
  56
  57   /* Real printing (not preview) */
  58   GtkPrintJob *job;         /* the job we are sending to the printer */
  59   cairo_surface_t *surface;
  60   gulong job_status_changed_tag;
  61
  62
  63 } GtkPrintOperationUnix;
  64
  65 typedef struct _PrinterFinder PrinterFinder;
  66
  67 static void printer_finder_free (PrinterFinder *finder);
  68 static void find_printer        (const gchar   *printer,
  69                                  GFunc          func,
  70                                  gpointer       data);
  71
  72 static void
  73 unix_start_page (GtkPrintOperation *op,
  74                  GtkPrintContext   *print_context,
  75                  GtkPageSetup      *page_setup)
  76 {
  77   GtkPrintOperationUnix *op_unix;
  78   GtkPaperSize *paper_size;
  79   cairo_surface_type_t type;
  80   gdouble w, h;
  81
  82   op_unix = op->priv->platform_data;
  83
  84   paper_size = gtk_page_setup_get_paper_size (page_setup);
  85
  86   w = gtk_paper_size_get_width (paper_size, GTK_UNIT_POINTS);
  87   h = gtk_paper_size_get_height (paper_size, GTK_UNIT_POINTS);
  88
  89   type = cairo_surface_get_type (op_unix->surface);
  90
  91   if (type == CAIRO_SURFACE_TYPE_PS)
  92     cairo_ps_surface_set_size (op_unix->surface, w, h);
  93   else if (type == CAIRO_SURFACE_TYPE_PDF)
  94     cairo_pdf_surface_set_size (op_unix->surface, w, h);
  95 }
  96
  97 static void
  98 unix_end_page (GtkPrintOperation *op,
  99                GtkPrintContext   *print_context)
 100 {
 101   cairo_t *cr;
 102
 103   cr = gtk_print_context_get_cairo_context (print_context);
 104   cairo_show_page (cr);
 105 }
 106
 107 static void
 108 op_unix_free (GtkPrintOperationUnix *op_unix)
 109 {
 110   if (op_unix->job)
 111     {
 112       g_signal_handler_disconnect (op_unix->job,
 113                                    op_unix->job_status_changed_tag);
 114       g_object_unref (op_unix->job);
 115     }
 116
 117   g_free (op_unix);
 118 }
 119
 120 static gchar *
 121 shell_command_substitute_file (const gchar *cmd,
 122                                const gchar *pdf_filename,
 123                                const gchar *settings_filename,
 124                                gboolean    *pdf_filename_replaced,
 125                                gboolean    *settings_filename_replaced)
 126 {
 127   const gchar *inptr, *start;
 128   GString *final;
 129
 130   g_return_val_if_fail (cmd != NULL, NULL);
 131   g_return_val_if_fail (pdf_filename != NULL, NULL);
 132   g_return_val_if_fail (settings_filename != NULL, NULL);
 133
 134   final = g_string_new (NULL);
 135
 136   *pdf_filename_replaced = FALSE;
 137   *settings_filename_replaced = FALSE;
 138
 139   start = inptr = cmd;
 140   while ((inptr = strchr (inptr, '%')) != NULL)
 141     {
 142       g_string_append_len (final, start, inptr - start);
 143       inptr++;
 144       switch (*inptr)
 145         {
 146           case 'f':
 147             g_string_append (final, pdf_filename);
 148             *pdf_filename_replaced = TRUE;
 149             break;
 150
 151           case 's':
 152             g_string_append (final, settings_filename);
 153             *settings_filename_replaced = TRUE;
 154             break;
 155
 156           case '%':
 157             g_string_append_c (final, '%');
 158             break;
 159
 160           default:
 161             g_string_append_c (final, '%');
 162             if (*inptr)
 163               g_string_append_c (final, *inptr);
 164             break;
 165         }
 166       if (*inptr)
 167         inptr++;
 168       start = inptr;
 169     }
 170   g_string_append (final, start);
 171
 172   return g_string_free (final, FALSE);
 173 }
 174
 175 void
 176 _gtk_print_operation_platform_backend_launch_preview (GtkPrintOperation *op,
 177                                                       cairo_surface_t   *surface,
 178                                                       GtkWindow         *parent,
 179                                                       const gchar       *filename)
 180 {
 181   gint argc;
 182   gchar **argv;
 183   gchar *cmd;
 184   gchar *preview_cmd;
 185   GtkSettings *settings;
 186   GtkPrintSettings *print_settings;
 187   gchar *settings_filename = NULL;
 188   gchar *quoted_filename;
 189   gchar *quoted_settings_filename;
 190   gboolean filename_used = FALSE;
 191   gboolean settings_used = FALSE;
 192   GdkScreen *screen;
 193   GError *error = NULL;
 194   gint fd;
 195   gboolean retval;
 196
 197   cairo_surface_destroy (surface);
 198
 199   if (parent)
 200     screen = gtk_window_get_screen (parent);
 201   else
 202     screen = gdk_screen_get_default ();
 203
 204   fd = g_file_open_tmp ("settingsXXXXXX.ini", &settings_filename, &error);
 205   if (fd < 0)
 206     goto out;
 207
 208   print_settings = gtk_print_operation_get_print_settings (op);
 209   retval = gtk_print_settings_to_file (print_settings, settings_filename, &error);
 210   close (fd);
 211
 212   if (!retval)
 213     goto out;
 214
 215   settings = gtk_settings_get_for_screen (screen);
 216   g_object_get (settings, "gtk-print-preview-command", &preview_cmd, NULL);
 217
 218   quoted_filename = g_shell_quote (filename);
 219   quoted_settings_filename = g_shell_quote (settings_filename);
 220   cmd = shell_command_substitute_file (preview_cmd, quoted_filename, quoted_settings_filename, &filename_used, &settings_used);
 221   g_shell_parse_argv (cmd, &argc, &argv, &error);
 222
 223   g_free (preview_cmd);
 224   g_free (quoted_filename);
 225   g_free (quoted_settings_filename);
 226   g_free (cmd);
 227
 228   if (error != NULL)
 229     goto out;
 230
 231   gdk_spawn_on_screen (screen, NULL, argv, NULL, G_SPAWN_SEARCH_PATH, NULL, NULL, NULL, &error);
 232
 233   g_strfreev (argv);
 234
 235  out:
 236   if (error != NULL)
 237     {
 238       GtkWidget *edialog;
 239       edialog = gtk_message_dialog_new (parent,
 240                                         GTK_DIALOG_DESTROY_WITH_PARENT,
 241                                         GTK_MESSAGE_ERROR,
 242                                         GTK_BUTTONS_CLOSE,
 243                                         _("Error launching preview") /* FIXME better text */);
 244       gtk_message_dialog_format_secondary_text (GTK_MESSAGE_DIALOG (edialog),
 245                                                 "%s", error->message);
 246       g_signal_connect (edialog, "response",
 247                         G_CALLBACK (gtk_widget_destroy), NULL);
 248
 249       gtk_window_present (GTK_WINDOW (edialog));
 250
 251       g_error_free (error);
 252
 253       filename_used = FALSE;
 254       settings_used = FALSE;
 255    }
 256
 257   if (!filename_used)
 258     g_unlink (filename);
 259
 260   if (!settings_used)
 261     g_unlink (settings_filename);
 262
 263   g_free (settings_filename);
 264 }
 265
 266 static void
 267 unix_finish_send  (GtkPrintJob *job,
 268                    gpointer     user_data,
 269                    GError      *error)
 270 {
 271   GtkPrintOperation *op = (GtkPrintOperation *) user_data;
 272   GtkPrintOperationUnix *op_unix = op->priv->platform_data;
 273
 274   if (error != NULL)
 275     {
 276       GtkWidget *edialog;
 277       edialog = gtk_message_dialog_new (op_unix->parent,
 278                                         GTK_DIALOG_DESTROY_WITH_PARENT,
 279                                         GTK_MESSAGE_ERROR,
 280                                         GTK_BUTTONS_CLOSE,
 281                                         _("Error printing") /* FIXME better text */);
 282       gtk_message_dialog_format_secondary_text (GTK_MESSAGE_DIALOG (edialog),
 283                                                 "%s", error->message);
 284       gtk_window_set_modal (GTK_WINDOW (edialog), TRUE);
 285       g_signal_connect (edialog, "response",
 286                         G_CALLBACK (gtk_widget_destroy), NULL);
 287
 288       gtk_window_present (GTK_WINDOW (edialog));
 289     }
 290
 291   op_unix->data_sent = TRUE;
 292
 293   if (op_unix->loop)
 294     g_main_loop_quit (op_unix->loop);
 295
 296   g_object_unref (op);
 297 }
 298
 299 static void
 300 unix_end_run (GtkPrintOperation *op,
 301               gboolean           wait,
 302               gboolean           cancelled)
 303 {
 304   GtkPrintOperationUnix *op_unix = op->priv->platform_data;
 305
 306   cairo_surface_finish (op_unix->surface);
 307
 308   if (cancelled)
 309     return;
 310
 311   if (wait)
 312     op_unix->loop = g_main_loop_new (NULL, FALSE);
 313
 314   /* TODO: Check for error */
 315   if (op_unix->job != NULL)
 316     {
 317       g_object_ref (op);
 318       gtk_print_job_send (op_unix->job,
 319                           unix_finish_send,
 320                           op, NULL);
 321     }
 322
 323   if (wait)
 324     {
 325       g_object_ref (op);
 326       if (!op_unix->data_sent)
 327         {
 328           GDK_THREADS_LEAVE ();
 329           g_main_loop_run (op_unix->loop);
 330           GDK_THREADS_ENTER ();
 331         }
 332       g_main_loop_unref (op_unix->loop);
 333       op_unix->loop = NULL;
 334       g_object_unref (op);
 335     }
 336 }
 337
 338 static void
 339 job_status_changed_cb (GtkPrintJob       *job,
 340                        GtkPrintOperation *op)
 341 {
 342   _gtk_print_operation_set_status (op, gtk_print_job_get_status (job), NULL);
 343 }
 344
 345
 346 static GtkWidget *
 347 get_print_dialog (GtkPrintOperation *op,
 348                   GtkWindow         *parent)
 349 {
 350   GtkPrintOperationPrivate *priv = op->priv;
 351   GtkWidget *pd, *label;
 352   GtkPageSetup *page_setup;
 353   const gchar *custom_tab_label;
 354
 355   pd = gtk_print_unix_dialog_new (NULL, parent);
 356
 357   gtk_print_unix_dialog_set_manual_capabilities (GTK_PRINT_UNIX_DIALOG (pd),
 358                                                  GTK_PRINT_CAPABILITY_PAGE_SET |
 359                                                  GTK_PRINT_CAPABILITY_COPIES |
 360                                                  GTK_PRINT_CAPABILITY_COLLATE |
 361                                                  GTK_PRINT_CAPABILITY_REVERSE |
 362                                                  GTK_PRINT_CAPABILITY_SCALE |
 363                                                  GTK_PRINT_CAPABILITY_PREVIEW);
 364
 365   if (priv->print_settings)
 366     gtk_print_unix_dialog_set_settings (GTK_PRINT_UNIX_DIALOG (pd),
 367                                         priv->print_settings);
 368   if (priv->default_page_setup)
 369     page_setup = gtk_page_setup_copy (priv->default_page_setup);
 370   else
 371     page_setup = gtk_page_setup_new ();
 372
 373   gtk_print_unix_dialog_set_page_setup (GTK_PRINT_UNIX_DIALOG (pd),
 374                                         page_setup);
 375   g_object_unref (page_setup);
 376
 377   g_signal_emit_by_name (op, "create-custom-widget",
 378                          &priv->custom_widget);
 379
 380   if (priv->custom_widget)
 381     {
 382       custom_tab_label = priv->custom_tab_label;
 383
 384       if (custom_tab_label == NULL)
 385         {
 386           custom_tab_label = g_get_application_name ();
 387           if (custom_tab_label == NULL)
 388             custom_tab_label = _("Application");
 389         }
 390
 391       label = gtk_label_new (custom_tab_label);
 392
 393       gtk_print_unix_dialog_add_custom_tab (GTK_PRINT_UNIX_DIALOG (pd),
 394                                             priv->custom_widget, label);
 395     }
 396
 397   return pd;
 398 }
 399
 400 typedef struct
 401 {
 402   GtkPrintOperation           *op;
 403   gboolean                     do_print;
 404   gboolean                     do_preview;
 405   GtkPrintOperationResult      result;
 406   GtkPrintOperationPrintFunc   print_cb;
 407   GDestroyNotify               destroy;
 408   GtkWindow                   *parent;
 409   GMainLoop                   *loop;
 410 } PrintResponseData;
 411
 412 static void
 413 print_response_data_free (gpointer data)
 414 {
 415   PrintResponseData *rdata = data;
 416
 417   g_object_unref (rdata->op);
 418   g_free (rdata);
 419 }
 420
 421 static void
 422 finish_print (PrintResponseData *rdata,
 423               GtkPrinter        *printer,
 424               GtkPageSetup      *page_setup,
 425               GtkPrintSettings  *settings)
 426 {
 427   GtkPrintOperation *op = rdata->op;
 428   GtkPrintOperationPrivate *priv = op->priv;
 429   GtkPrintJob *job;
 430
 431   if (rdata->do_print)
 432     {
 433       gtk_print_operation_set_print_settings (op, settings);
 434       priv->print_context = _gtk_print_context_new (op);
 435       _gtk_print_context_set_page_setup (priv->print_context, page_setup);
 436
 437       if (!rdata->do_preview)
 438         {
 439           GtkPrintOperationUnix *op_unix;
 440           cairo_t *cr;
 441
 442           op_unix = g_new0 (GtkPrintOperationUnix, 1);
 443           priv->platform_data = op_unix;
 444           priv->free_platform_data = (GDestroyNotify) op_unix_free;
 445           op_unix->parent = rdata->parent;
 446
 447           priv->start_page = unix_start_page;
 448           priv->end_page = unix_end_page;
 449           priv->end_run = unix_end_run;
 450
 451           job = gtk_print_job_new (priv->job_name, printer, settings, page_setup);
 452           op_unix->job = job;
 453           gtk_print_job_set_track_print_status (job, priv->track_print_status);
 454
 455           op_unix->surface = gtk_print_job_get_surface (job, &priv->error);
 456           if (op_unix->surface == NULL)
 457             {
 458               rdata->result = GTK_PRINT_OPERATION_RESULT_ERROR;
 459               rdata->do_print = FALSE;
 460               goto out;
 461             }
 462
 463           cr = cairo_create (op_unix->surface);
 464           gtk_print_context_set_cairo_context (priv->print_context, cr, 72, 72);
 465           cairo_destroy (cr);
 466
 467           _gtk_print_operation_set_status (op, gtk_print_job_get_status (job), NULL);
 468
 469           op_unix->job_status_changed_tag =
 470             g_signal_connect (job, "status-changed",
 471                               G_CALLBACK (job_status_changed_cb), op);
 472
 473           priv->print_pages = job->print_pages;
 474           priv->page_ranges = job->page_ranges;
 475           priv->num_page_ranges = job->num_page_ranges;
 476
 477           priv->manual_num_copies = job->num_copies;
 478           priv->manual_collation = job->collate;
 479           priv->manual_reverse = job->reverse;
 480           priv->manual_page_set = job->page_set;
 481           priv->manual_scale = job->scale;
 482           priv->manual_orientation = job->rotate_to_orientation;
 483         }
 484     }
 485  out:
 486   if (rdata->print_cb)
 487     rdata->print_cb (op, rdata->parent, rdata->do_print, rdata->result);
 488
 489   if (rdata->destroy)
 490     rdata->destroy (rdata);
 491 }
 492
 493 static void
 494 handle_print_response (GtkWidget *dialog,
 495                        gint       response,
 496                        gpointer   data)
 497 {
 498   GtkPrintUnixDialog *pd = GTK_PRINT_UNIX_DIALOG (dialog);
 499   PrintResponseData *rdata = data;
 500   GtkPrintSettings *settings = NULL;
 501   GtkPageSetup *page_setup = NULL;
 502   GtkPrinter *printer = NULL;
 503
 504   if (response == GTK_RESPONSE_OK)
 505     {
 506       printer = gtk_print_unix_dialog_get_selected_printer (GTK_PRINT_UNIX_DIALOG (pd));
 507
 508       rdata->result = GTK_PRINT_OPERATION_RESULT_APPLY;
 509       rdata->do_preview = FALSE;
 510       if (printer != NULL)
 511         rdata->do_print = TRUE;
 512     }
 513   else if (response == GTK_RESPONSE_APPLY)
 514     {
 515       /* print preview */
 516       rdata->result = GTK_PRINT_OPERATION_RESULT_APPLY;
 517       rdata->do_preview = TRUE;
 518       rdata->do_print = TRUE;
 519
 520       rdata->op->priv->action = GTK_PRINT_OPERATION_ACTION_PREVIEW;
 521     }
 522
 523   if (rdata->do_print)
 524     {
 525       settings = gtk_print_unix_dialog_get_settings (GTK_PRINT_UNIX_DIALOG (pd));
 526       page_setup = gtk_print_unix_dialog_get_page_setup (GTK_PRINT_UNIX_DIALOG (pd));
 527
 528       g_signal_emit_by_name (rdata->op, "custom-widget-apply", rdata->op->priv->custom_widget);
 529     }
 530
 531   finish_print (rdata, printer, page_setup, settings);
 532
 533   if (settings)
 534     g_object_unref (settings);
 535
 536   gtk_widget_destroy (GTK_WIDGET (pd));
 537
 538 }
 539
 540
 541 static void
 542 found_printer (GtkPrinter        *printer,
 543                PrintResponseData *rdata)
 544 {
 545   GtkPrintOperation *op = rdata->op;
 546   GtkPrintOperationPrivate *priv = op->priv;
 547   GtkPrintSettings *settings = NULL;
 548   GtkPageSetup *page_setup = NULL;
 549
 550   if (rdata->loop)
 551     g_main_loop_quit (rdata->loop);
 552
 553   if (printer != NULL)
 554     {
 555       rdata->result = GTK_PRINT_OPERATION_RESULT_APPLY;
 556
 557       rdata->do_print = TRUE;
 558
 559       if (priv->print_settings)
 560         settings = gtk_print_settings_copy (priv->print_settings);
 561       else
 562         settings = gtk_print_settings_new ();
 563
 564       gtk_print_settings_set_printer (settings,
 565                                       gtk_printer_get_name (printer));
 566
 567       if (priv->default_page_setup)
 568         page_setup = gtk_page_setup_copy (priv->default_page_setup);
 569       else
 570         page_setup = gtk_page_setup_new ();
 571   }
 572
 573   finish_print (rdata, printer, page_setup, settings);
 574
 575   if (settings)
 576     g_object_unref (settings);
 577
 578   if (page_setup)
 579     g_object_unref (page_setup);
 580 }
 581
 582 void
 583 _gtk_print_operation_platform_backend_run_dialog_async (GtkPrintOperation          *op,
 584                                                         gboolean                    show_dialog,
 585                                                         GtkWindow                  *parent,
 586                                                         GtkPrintOperationPrintFunc  print_cb)
 587 {
 588   GtkWidget *pd;
 589   PrintResponseData *rdata;
 590   const gchar *printer_name;
 591
 592   rdata = g_new (PrintResponseData, 1);
 593   rdata->op = g_object_ref (op);
 594   rdata->do_print = FALSE;
 595   rdata->do_preview = FALSE;
 596   rdata->result = GTK_PRINT_OPERATION_RESULT_CANCEL;
 597   rdata->print_cb = print_cb;
 598   rdata->parent = parent;
 599   rdata->loop = NULL;
 600   rdata->destroy = print_response_data_free;
 601
 602   if (show_dialog)
 603     {
 604       pd = get_print_dialog (op, parent);
 605       gtk_window_set_modal (GTK_WINDOW (pd), TRUE);
 606
 607       g_signal_connect (pd, "response",
 608                         G_CALLBACK (handle_print_response), rdata);
 609
 610       gtk_window_present (GTK_WINDOW (pd));
 611     }
 612   else
 613     {
 614       printer_name = NULL;
 615       if (op->priv->print_settings)
 616         printer_name = gtk_print_settings_get_printer (op->priv->print_settings);
 617
 618       find_printer (printer_name, (GFunc) found_printer, rdata);
 619     }
 620 }
 621
 622 static cairo_status_t
 623 write_preview (void                *closure,
 624                const unsigned char *data,
 625                unsigned int         length)
 626 {
 627   gint fd = GPOINTER_TO_INT (closure);
 628   gssize written;
 629
 630   while (length > 0)
 631     {
 632       written = write (fd, data, length);
 633
 634       if (written == -1)
 635         {
 636           if (errno == EAGAIN || errno == EINTR)
 637             continue;
 638
 639           return CAIRO_STATUS_WRITE_ERROR;
 640         }
 641
 642       data += written;
 643       length -= written;
 644     }
 645
 646   return CAIRO_STATUS_SUCCESS;
 647 }
 648
 649 static void
 650 close_preview (void *data)
 651 {
 652   gint fd = GPOINTER_TO_INT (data);
 653
 654   close (fd);
 655 }
 656
 657 cairo_surface_t *
 658 _gtk_print_operation_platform_backend_create_preview_surface (GtkPrintOperation *op,
 659                                                               GtkPageSetup      *page_setup,
 660                                                               gdouble           *dpi_x,
 661                                                               gdouble           *dpi_y,
 662                                                               gchar            **target)
 663 {
 664   gchar *filename;
 665   gint fd;
 666   GtkPaperSize *paper_size;
 667   gdouble w, h;
 668   cairo_surface_t *surface;
 669   static cairo_user_data_key_t key;
 670
 671   filename = g_build_filename (g_get_tmp_dir (), "previewXXXXXX.pdf", NULL);
 672   fd = g_mkstemp (filename);
 673   *target = filename;
 674
 675   paper_size = gtk_page_setup_get_paper_size (page_setup);
 676   w = gtk_paper_size_get_width (paper_size, GTK_UNIT_POINTS);
 677   h = gtk_paper_size_get_height (paper_size, GTK_UNIT_POINTS);
 678
 679   *dpi_x = *dpi_y = 72;
 680   surface = cairo_pdf_surface_create_for_stream (write_preview, GINT_TO_POINTER(fd), w, h);
 681
 682   cairo_surface_set_user_data (surface, &key, GINT_TO_POINTER (fd), close_preview);
 683
 684   return surface;
 685 }
 686
 687 void
 688 _gtk_print_operation_platform_backend_preview_start_page (GtkPrintOperation *op,
 689                                                           cairo_surface_t   *surface,
 690                                                           cairo_t           *cr)
 691 {
 692 }
 693
 694 void
 695 _gtk_print_operation_platform_backend_preview_end_page (GtkPrintOperation *op,
 696                                                         cairo_surface_t   *surface,
 697                                                         cairo_t           *cr)
 698 {
 699   cairo_show_page (cr);
 700 }
 701
 702 void
 703 _gtk_print_operation_platform_backend_resize_preview_surface (GtkPrintOperation *op,
 704                                                               GtkPageSetup      *page_setup,
 705                                                               cairo_surface_t   *surface)
 706 {
 707   GtkPaperSize *paper_size;
 708   gdouble w, h;
 709
 710   paper_size = gtk_page_setup_get_paper_size (page_setup);
 711   w = gtk_paper_size_get_width (paper_size, GTK_UNIT_POINTS);
 712   h = gtk_paper_size_get_height (paper_size, GTK_UNIT_POINTS);
 713   cairo_pdf_surface_set_size (surface, w, h);
 714 }
 715
 716
 717 GtkPrintOperationResult
 718 _gtk_print_operation_platform_backend_run_dialog (GtkPrintOperation *op,
 719                                                   gboolean           show_dialog,
 720                                                   GtkWindow         *parent,
 721                                                   gboolean          *do_print)
 722  {
 723   GtkWidget *pd;
 724   PrintResponseData rdata;
 725   gint response;
 726   const gchar *printer_name;
 727
 728   rdata.op = op;
 729   rdata.do_print = FALSE;
 730   rdata.do_preview = FALSE;
 731   rdata.result = GTK_PRINT_OPERATION_RESULT_CANCEL;
 732   rdata.print_cb = NULL;
 733   rdata.destroy = NULL;
 734   rdata.parent = parent;
 735   rdata.loop = NULL;
 736
 737   if (show_dialog)
 738     {
 739       pd = get_print_dialog (op, parent);
 740
 741       response = gtk_dialog_run (GTK_DIALOG (pd));
 742       handle_print_response (pd, response, &rdata);
 743     }
 744   else
 745     {
 746       printer_name = NULL;
 747       if (op->priv->print_settings)
 748         printer_name = gtk_print_settings_get_printer (op->priv->print_settings);
 749
 750       rdata.loop = g_main_loop_new (NULL, FALSE);
 751       find_printer (printer_name,
 752                     (GFunc) found_printer, &rdata);
 753
 754       GDK_THREADS_LEAVE ();
 755       g_main_loop_run (rdata.loop);
 756       GDK_THREADS_ENTER ();
 757
 758       g_main_loop_unref (rdata.loop);
 759       rdata.loop = NULL;
 760     }
 761
 762   *do_print = rdata.do_print;
 763
 764   return rdata.result;
 765 }
 766
 767
 768 typedef struct
 769 {
 770   GtkPageSetup         *page_setup;
 771   GtkPageSetupDoneFunc  done_cb;
 772   gpointer              data;
 773   GDestroyNotify        destroy;
 774 } PageSetupResponseData;
 775
 776 static void
 777 page_setup_data_free (gpointer data)
 778 {
 779   PageSetupResponseData *rdata = data;
 780
 781   if (rdata->page_setup)
 782     g_object_unref (rdata->page_setup);
 783
 784   g_free (rdata);
 785 }
 786
 787 static void
 788 handle_page_setup_response (GtkWidget *dialog,
 789                             gint       response,
 790                             gpointer   data)
 791 {
 792   GtkPageSetupUnixDialog *psd;
 793   PageSetupResponseData *rdata = data;
 794
 795   psd = GTK_PAGE_SETUP_UNIX_DIALOG (dialog);
 796   if (response == GTK_RESPONSE_OK)
 797     rdata->page_setup = gtk_page_setup_unix_dialog_get_page_setup (psd);
 798
 799   gtk_widget_destroy (dialog);
 800
 801   if (rdata->done_cb)
 802     rdata->done_cb (rdata->page_setup, rdata->data);
 803
 804   if (rdata->destroy)
 805     rdata->destroy (rdata);
 806 }
 807
 808 static GtkWidget *
 809 get_page_setup_dialog (GtkWindow        *parent,
 810                        GtkPageSetup     *page_setup,
 811                        GtkPrintSettings *settings)
 812 {
 813   GtkWidget *dialog;
 814
 815   dialog = gtk_page_setup_unix_dialog_new (NULL, parent);
 816   if (page_setup)
 817     gtk_page_setup_unix_dialog_set_page_setup (GTK_PAGE_SETUP_UNIX_DIALOG (dialog),
 818                                                page_setup);
 819   gtk_page_setup_unix_dialog_set_print_settings (GTK_PAGE_SETUP_UNIX_DIALOG (dialog),
 820                                                  settings);
 821
 822   return dialog;
 823 }
 824
 825 /**
 826  * gtk_print_run_page_setup_dialog:
 827  * @parent: transient parent, or %NULL
 828  * @page_setup: an existing #GtkPageSetup, or %NULL
 829  * @settings: a #GtkPrintSettings
 830  *
 831  * Runs a page setup dialog, letting the user modify the values from
 832  * @page_setup. If the user cancels the dialog, the returned #GtkPageSetup
 833  * is identical to the passed in @page_setup, otherwise it contains the
 834  * modifications done in the dialog.
 835  *
 836  * Note that this function may use a recursive mainloop to show the page
 837  * setup dialog. See gtk_print_run_page_setup_dialog_async() if this is
 838  * a problem.
 839  *
 840  * Return value: a new #GtkPageSetup
 841  *
 842  * Since: 2.10
 843  */
 844 GtkPageSetup *
 845 gtk_print_run_page_setup_dialog (GtkWindow        *parent,
 846                                  GtkPageSetup     *page_setup,
 847                                  GtkPrintSettings *settings)
 848 {
 849   GtkWidget *dialog;
 850   gint response;
 851   PageSetupResponseData rdata;
 852
 853   rdata.page_setup = NULL;
 854   rdata.done_cb = NULL;
 855   rdata.data = NULL;
 856   rdata.destroy = NULL;
 857
 858   dialog = get_page_setup_dialog (parent, page_setup, settings);
 859   response = gtk_dialog_run (GTK_DIALOG (dialog));
 860   handle_page_setup_response (dialog, response, &rdata);
 861
 862   if (rdata.page_setup)
 863     return rdata.page_setup;
 864   else if (page_setup)
 865     return gtk_page_setup_copy (page_setup);
 866   else
 867     return gtk_page_setup_new ();
 868 }
 869
 870 /**
 871  * gtk_print_run_page_setup_dialog_async:
 872  * @parent: transient parent, or %NULL
 873  * @page_setup: an existing #GtkPageSetup, or %NULL
 874  * @settings: a #GtkPrintSettings
 875  * @done_cb: a function to call when the user saves the modified page setup
 876  * @data: user data to pass to @done_cb
 877  *
 878  * Runs a page setup dialog, letting the user modify the values from @page_setup.
 879  *
 880  * In contrast to gtk_print_run_page_setup_dialog(), this function  returns after
 881  * showing the page setup dialog on platforms that support this, and calls @done_cb
 882  * from a signal handler for the ::response signal of the dialog.
 883  *
 884  * Since: 2.10
 885  */
 886 void
 887 gtk_print_run_page_setup_dialog_async (GtkWindow            *parent,
 888                                        GtkPageSetup         *page_setup,
 889                                        GtkPrintSettings     *settings,
 890                                        GtkPageSetupDoneFunc  done_cb,
 891                                        gpointer              data)
 892 {
 893   GtkWidget *dialog;
 894   PageSetupResponseData *rdata;
 895
 896   dialog = get_page_setup_dialog (parent, page_setup, settings);
 897   gtk_window_set_modal (GTK_WINDOW (dialog), TRUE);
 898
 899   rdata = g_new (PageSetupResponseData, 1);
 900   rdata->page_setup = NULL;
 901   rdata->done_cb = done_cb;
 902   rdata->data = data;
 903   rdata->destroy = page_setup_data_free;
 904
 905   g_signal_connect (dialog, "response",
 906                     G_CALLBACK (handle_page_setup_response), rdata);
 907
 908   gtk_window_present (GTK_WINDOW (dialog));
 909  }
 910
 911 struct _PrinterFinder
 912 {
 913   gboolean found_printer;
 914   GFunc func;
 915   gpointer data;
 916   gchar *printer_name;
 917   GList *backends;
 918   guint timeout_tag;
 919   GtkPrinter *printer;
 920   GtkPrinter *default_printer;
 921   GtkPrinter *first_printer;
 922 };
 923
 924 static gboolean
 925 find_printer_idle (gpointer data)
 926 {
 927   PrinterFinder *finder = data;
 928   GtkPrinter *printer;
 929
 930   if (finder->printer != NULL)
 931     printer = finder->printer;
 932   else if (finder->default_printer != NULL)
 933     printer = finder->default_printer;
 934   else if (finder->first_printer != NULL)
 935     printer = finder->first_printer;
 936   else
 937     printer = NULL;
 938
 939   finder->func (printer, finder->data);
 940
 941   printer_finder_free (finder);
 942
 943   return FALSE;
 944 }
 945
 946 static void
 947 printer_added_cb (GtkPrintBackend *backend,
 948                   GtkPrinter      *printer,
 949                   PrinterFinder   *finder)
 950 {
 951   if (finder->found_printer)
 952     return;
 953
 954   /* FIXME this skips "Print to PDF" - is this intentional ? */
 955   if (gtk_printer_is_virtual (printer))
 956     return;
 957
 958   if (finder->printer_name != NULL &&
 959       strcmp (gtk_printer_get_name (printer), finder->printer_name) == 0)
 960     {
 961       finder->printer = g_object_ref (printer);
 962       finder->found_printer = TRUE;
 963     }
 964   else if (finder->default_printer == NULL &&
 965            gtk_printer_is_default (printer))
 966     {
 967       finder->default_printer = g_object_ref (printer);
 968       if (finder->printer_name == NULL)
 969         finder->found_printer = TRUE;
 970     }
 971   else
 972     if (finder->first_printer == NULL)
 973       finder->first_printer = g_object_ref (printer);
 974
 975   if (finder->found_printer)
 976     g_idle_add (find_printer_idle, finder);
 977 }
 978
 979 static void
 980 printer_list_done_cb (GtkPrintBackend *backend,
 981                       PrinterFinder   *finder)
 982 {
 983   finder->backends = g_list_remove (finder->backends, backend);
 984
 985   g_signal_handlers_disconnect_by_func (backend, printer_added_cb, finder);
 986   g_signal_handlers_disconnect_by_func (backend, printer_list_done_cb, finder);
 987
 988   gtk_print_backend_destroy (backend);
 989   g_object_unref (backend);
 990
 991   if (finder->backends == NULL && !finder->found_printer)
 992     g_idle_add (find_printer_idle, finder);
 993 }
 994
 995 static void
 996 find_printer_init (PrinterFinder   *finder,
 997                    GtkPrintBackend *backend)
 998 {
 999   GList *list;
1000   GList *node;
1001
1002   list = gtk_print_backend_get_printer_list (backend);
1003
1004   node = list;
1005   while (node != NULL)
1006     {
1007       printer_added_cb (backend, node->data, finder);
1008       node = node->next;
1009
1010       if (finder->found_printer)
1011         break;
1012     }
1013
1014   g_list_free (list);
1015
1016   if (gtk_print_backend_printer_list_is_done (backend))
1017     {
1018       finder->backends = g_list_remove (finder->backends, backend);
1019       gtk_print_backend_destroy (backend);
1020       g_object_unref (backend);
1021     }
1022   else
1023     {
1024       g_signal_connect (backend, "printer-added",
1025                         (GCallback) printer_added_cb,
1026                         finder);
1027       g_signal_connect (backend, "printer-list-done",
1028                         (GCallback) printer_list_done_cb,
1029                         finder);
1030     }
1031
1032 }
1033
1034 static void
1035 printer_finder_free (PrinterFinder *finder)
1036 {
1037   GList *l;
1038
1039   g_free (finder->printer_name);
1040
1041   if (finder->printer)
1042     g_object_unref (finder->printer);
1043
1044   if (finder->default_printer)
1045     g_object_unref (finder->default_printer);
1046
1047   if (finder->first_printer)
1048     g_object_unref (finder->first_printer);
1049
1050   for (l = finder->backends; l != NULL; l = l->next)
1051     {
1052       GtkPrintBackend *backend = l->data;
1053       g_signal_handlers_disconnect_by_func (backend, printer_added_cb, finder);
1054       g_signal_handlers_disconnect_by_func (backend, printer_list_done_cb, finder);
1055       gtk_print_backend_destroy (backend);
1056       g_object_unref (backend);
1057     }
1058
1059   g_list_free (finder->backends);
1060
1061   g_free (finder);
1062 }
1063
1064 static void
1065 find_printer (const gchar *printer,
1066               GFunc        func,
1067               gpointer     data)
1068 {
1069   GList *node, *next;
1070   PrinterFinder *finder;
1071
1072   finder = g_new0 (PrinterFinder, 1);
1073
1074   finder->printer_name = g_strdup (printer);
1075   finder->func = func;
1076   finder->data = data;
1077
1078   finder->backends = NULL;
1079   if (g_module_supported ())
1080     finder->backends = gtk_print_backend_load_modules ();
1081
1082   for (node = finder->backends; !finder->found_printer && node != NULL; node = next)
1083     {
1084       next = node->next;
1085       find_printer_init (finder, GTK_PRINT_BACKEND (node->data));
1086     }
1087
1088   if (finder->backends == NULL && !finder->found_printer)
1089     g_idle_add (find_printer_idle, finder);
1090 }
1091
1092 #define __GTK_PRINT_OPERATION_UNIX_C__
1093 #include "gtkaliasdef.c"