Pileus Git - ~andy/gtk/blob - gtk/gtkprintjob.c

   1 /* GtkPrintJob
   2  * Copyright (C) 2006 John (J5) Palmieri  <johnp@redhat.com>
   3  *
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Lesser General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2 of the License, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Lesser General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Lesser General Public
  15  * License along with this library; if not, write to the
  16  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  17  * Boston, MA 02111-1307, USA.
  18  */
  19
  20 #include "config.h"
  21 #include <stdlib.h>
  22 #include <string.h>
  23 #include <stdio.h>
  24 #include <fcntl.h>
  25 #include <errno.h>
  26 #ifdef HAVE_UNISTD_H
  27 #include <unistd.h>
  28 #endif
  29 #include <sys/types.h>
  30 #include <sys/stat.h>
  31
  32 #include <glib/gstdio.h>
  33 #include "gtkintl.h"
  34 #include "gtkprivate.h"
  35
  36 #include "gtkprintjob.h"
  37 #include "gtkprinter.h"
  38 #include "gtkprinter-private.h"
  39 #include "gtkprintbackend.h"
  40 #include "gtkalias.h"
  41
  42 #ifndef O_BINARY
  43 #define O_BINARY 0
  44 #endif
  45
  46 struct _GtkPrintJobPrivate
  47 {
  48   gchar *title;
  49
  50   GIOChannel *spool_io;
  51   cairo_surface_t *surface;
  52
  53   GtkPrintStatus status;
  54   GtkPrintBackend *backend;
  55   GtkPrinter *printer;
  56   GtkPrintSettings *settings;
  57   GtkPageSetup *page_setup;
  58
  59   guint printer_set : 1;
  60   guint page_setup_set : 1;
  61   guint settings_set  : 1;
  62   guint track_print_status : 1;
  63 };
  64
  65
  66 #define GTK_PRINT_JOB_GET_PRIVATE(o)  \
  67    (G_TYPE_INSTANCE_GET_PRIVATE ((o), GTK_TYPE_PRINT_JOB, GtkPrintJobPrivate))
  68
  69 static void     gtk_print_job_finalize     (GObject               *object);
  70 static void     gtk_print_job_set_property (GObject               *object,
  71                                             guint                  prop_id,
  72                                             const GValue          *value,
  73                                             GParamSpec            *pspec);
  74 static void     gtk_print_job_get_property (GObject               *object,
  75                                             guint                  prop_id,
  76                                             GValue                *value,
  77                                             GParamSpec            *pspec);
  78 static GObject* gtk_print_job_constructor  (GType                  type,
  79                                             guint                  n_construct_properties,
  80                                             GObjectConstructParam *construct_params);
  81
  82 enum {
  83   STATUS_CHANGED,
  84   LAST_SIGNAL
  85 };
  86
  87 enum {
  88   PROP_0,
  89   PROP_TITLE,
  90   PROP_PRINTER,
  91   PROP_PAGE_SETUP,
  92   PROP_SETTINGS,
  93   PROP_TRACK_PRINT_STATUS
  94 };
  95
  96 static guint signals[LAST_SIGNAL] = { 0 };
  97
  98 G_DEFINE_TYPE (GtkPrintJob, gtk_print_job, G_TYPE_OBJECT)
  99
 100 static void
 101 gtk_print_job_class_init (GtkPrintJobClass *class)
 102 {
 103   GObjectClass *object_class;
 104   object_class = (GObjectClass *) class;
 105
 106   object_class->finalize = gtk_print_job_finalize;
 107   object_class->constructor = gtk_print_job_constructor;
 108   object_class->set_property = gtk_print_job_set_property;
 109   object_class->get_property = gtk_print_job_get_property;
 110
 111   g_type_class_add_private (class, sizeof (GtkPrintJobPrivate));
 112
 113   g_object_class_install_property (object_class,
 114                                    PROP_TITLE,
 115                                    g_param_spec_string ("title",
 116                                                         P_("Title"),
 117                                                         P_("Title of the print job"),
 118                                                         NULL,
 119                                                         GTK_PARAM_READWRITE |
 120                                                         G_PARAM_CONSTRUCT_ONLY));
 121
 122   g_object_class_install_property (object_class,
 123                                    PROP_PRINTER,
 124                                    g_param_spec_object ("printer",
 125                                                         P_("Printer"),
 126                                                         P_("Printer to print the job to"),
 127                                                         GTK_TYPE_PRINTER,
 128                                                         GTK_PARAM_READWRITE |
 129                                                         G_PARAM_CONSTRUCT_ONLY));
 130
 131   g_object_class_install_property (object_class,
 132                                    PROP_SETTINGS,
 133                                    g_param_spec_object ("settings",
 134                                                         P_("Settings"),
 135                                                         P_("Printer settings"),
 136                                                         GTK_TYPE_PRINT_SETTINGS,
 137                                                         GTK_PARAM_READWRITE |
 138                                                         G_PARAM_CONSTRUCT_ONLY));
 139
 140   g_object_class_install_property (object_class,
 141                                    PROP_PAGE_SETUP,
 142                                    g_param_spec_object ("page-setup",
 143                                                         P_("Page Setup"),
 144                                                         P_("Page Setup"),
 145                                                         GTK_TYPE_PAGE_SETUP,
 146                                                         GTK_PARAM_READWRITE |
 147                                                         G_PARAM_CONSTRUCT_ONLY));
 148
 149   g_object_class_install_property (object_class,
 150                                    PROP_TRACK_PRINT_STATUS,
 151                                    g_param_spec_boolean ("track-print-status",
 152                                                          P_("Track Print Status"),
 153                                                          P_("TRUE if the print job will continue to emit "
 154                                                             "status-changed signals after the print data "
 155                                                             "has been sent to the printer or print server."),
 156                                                          FALSE,
 157                                                          GTK_PARAM_READWRITE));
 158
 159
 160   /**
 161    * GtkPrintJob::status-changed:
 162    * @job: the #GtkPrintJob object on which the signal was emitted
 163    *
 164    * Gets emitted when the status of a job changes. The signal handler
 165    * can use gtk_print_job_get_status() to obtain the new status.
 166    *
 167    * Since: 2.10
 168    */
 169   signals[STATUS_CHANGED] =
 170     g_signal_new (I_("status-changed"),
 171                   G_TYPE_FROM_CLASS (class),
 172                   G_SIGNAL_RUN_LAST,
 173                   G_STRUCT_OFFSET (GtkPrintJobClass, status_changed),
 174                   NULL, NULL,
 175                   g_cclosure_marshal_VOID__VOID,
 176                   G_TYPE_NONE, 0);
 177 }
 178
 179 static void
 180 gtk_print_job_init (GtkPrintJob *job)
 181 {
 182   GtkPrintJobPrivate *priv;
 183
 184   priv = job->priv = GTK_PRINT_JOB_GET_PRIVATE (job);
 185
 186   priv->spool_io = NULL;
 187
 188   priv->title = g_strdup ("");
 189   priv->surface = NULL;
 190   priv->backend = NULL;
 191   priv->printer = NULL;
 192
 193   priv->printer_set = FALSE;
 194   priv->settings_set = FALSE;
 195   priv->page_setup_set = FALSE;
 196   priv->status = GTK_PRINT_STATUS_INITIAL;
 197   priv->track_print_status = FALSE;
 198
 199   job->print_pages = GTK_PRINT_PAGES_ALL;
 200   job->page_ranges = NULL;
 201   job->num_page_ranges = 0;
 202   job->collate = FALSE;
 203   job->reverse = FALSE;
 204   job->num_copies = 1;
 205   job->scale = 1.0;
 206   job->page_set = GTK_PAGE_SET_ALL;
 207   job->rotate_to_orientation = FALSE;
 208 }
 209
 210
 211 static GObject*
 212 gtk_print_job_constructor (GType                  type,
 213                            guint                  n_construct_properties,
 214                            GObjectConstructParam *construct_params)
 215 {
 216   GtkPrintJob *job;
 217   GtkPrintJobPrivate *priv;
 218   GObject *object;
 219
 220   object =
 221     G_OBJECT_CLASS (gtk_print_job_parent_class)->constructor (type,
 222                                                               n_construct_properties,
 223                                                               construct_params);
 224
 225   job = GTK_PRINT_JOB (object);
 226
 227   priv = job->priv;
 228   g_assert (priv->printer_set &&
 229             priv->settings_set &&
 230             priv->page_setup_set);
 231
 232   _gtk_printer_prepare_for_print (priv->printer,
 233                                   job,
 234                                   priv->settings,
 235                                   priv->page_setup);
 236
 237   return object;
 238 }
 239
 240
 241 static void
 242 gtk_print_job_finalize (GObject *object)
 243 {
 244   GtkPrintJob *job = GTK_PRINT_JOB (object);
 245   GtkPrintJobPrivate *priv = job->priv;
 246
 247   if (priv->spool_io != NULL)
 248     {
 249       g_io_channel_unref (priv->spool_io);
 250       priv->spool_io = NULL;
 251     }
 252
 253   if (priv->backend)
 254     g_object_unref (priv->backend);
 255
 256   if (priv->printer)
 257     g_object_unref (priv->printer);
 258
 259   if (priv->surface)
 260     cairo_surface_destroy (priv->surface);
 261
 262   if (priv->settings)
 263     g_object_unref (priv->settings);
 264
 265   if (priv->page_setup)
 266     g_object_unref (priv->page_setup);
 267
 268   g_free (job->page_ranges);
 269   job->page_ranges = NULL;
 270
 271   g_free (priv->title);
 272   priv->title = NULL;
 273
 274   G_OBJECT_CLASS (gtk_print_job_parent_class)->finalize (object);
 275 }
 276
 277 /**
 278  * gtk_print_job_new:
 279  * @title: the job title
 280  * @printer: a #GtkPrinter
 281  * @settings: a #GtkPrintSettings
 282  * @page_setup: a #GtkPageSetup
 283  *
 284  * Creates a new #GtkPrintJob.
 285  *
 286  * Return value: a new #GtkPrintJob
 287  *
 288  * Since: 2.10
 289  **/
 290 GtkPrintJob *
 291 gtk_print_job_new (const gchar      *title,
 292                    GtkPrinter       *printer,
 293                    GtkPrintSettings *settings,
 294                    GtkPageSetup     *page_setup)
 295 {
 296   GObject *result;
 297   result = g_object_new (GTK_TYPE_PRINT_JOB,
 298                          "title", title,
 299                          "printer", printer,
 300                          "settings", settings,
 301                          "page-setup", page_setup,
 302                          NULL);
 303   return (GtkPrintJob *) result;
 304 }
 305
 306 /**
 307  * gtk_print_job_get_settings:
 308  * @job: a #GtkPrintJob
 309  *
 310  * Gets the #GtkPrintSettings of the print job.
 311  *
 312  * Return value: the settings of @job
 313  *
 314  * Since: 2.10
 315  */
 316 GtkPrintSettings *
 317 gtk_print_job_get_settings (GtkPrintJob *job)
 318 {
 319   g_return_val_if_fail (GTK_IS_PRINT_JOB (job), NULL);
 320
 321   return job->priv->settings;
 322 }
 323
 324 /**
 325  * gtk_print_job_get_printer:
 326  * @job: a #GtkPrintJob
 327  *
 328  * Gets the #GtkPrinter of the print job.
 329  *
 330  * Return value: the printer of @job
 331  *
 332  * Since: 2.10
 333  */
 334 GtkPrinter *
 335 gtk_print_job_get_printer (GtkPrintJob *job)
 336 {
 337   g_return_val_if_fail (GTK_IS_PRINT_JOB (job), NULL);
 338
 339   return job->priv->printer;
 340 }
 341
 342 /**
 343  * gtk_print_job_get_title:
 344  * @job: a #GtkPrintJob
 345  *
 346  * Gets the job title.
 347  *
 348  * Return value: the title of @job
 349  *
 350  * Since: 2.10
 351  */
 352 G_CONST_RETURN gchar *
 353 gtk_print_job_get_title (GtkPrintJob *job)
 354 {
 355   g_return_val_if_fail (GTK_IS_PRINT_JOB (job), NULL);
 356
 357   return job->priv->title;
 358 }
 359
 360 /**
 361  * gtk_print_job_get_status:
 362  * @job: a #GtkPrintJob
 363  *
 364  * Gets the status of the print job.
 365  *
 366  * Return value: the status of @job
 367  *
 368  * Since: 2.10
 369  */
 370 GtkPrintStatus
 371 gtk_print_job_get_status (GtkPrintJob *job)
 372 {
 373   g_return_val_if_fail (GTK_IS_PRINT_JOB (job), GTK_PRINT_STATUS_FINISHED);
 374
 375   return job->priv->status;
 376 }
 377
 378 void
 379 gtk_print_job_set_status (GtkPrintJob   *job,
 380                           GtkPrintStatus status)
 381 {
 382   GtkPrintJobPrivate *priv;
 383
 384   g_return_if_fail (GTK_IS_PRINT_JOB (job));
 385
 386   priv = job->priv;
 387
 388   if (priv->status == status)
 389     return;
 390
 391   priv->status = status;
 392   g_signal_emit (job, signals[STATUS_CHANGED], 0);
 393 }
 394
 395 /**
 396  * gtk_print_job_set_source_file:
 397  * @job: a #GtkPrintJob
 398  * @filename: the file to be printed
 399  * @error: return location for errors
 400  *
 401  * Make the #GtkPrintJob send an existing document to the
 402  * printing system. The file can be in any format understood
 403  * by the platforms printing system (typically PostScript,
 404  * but on many platforms PDF may work too). See
 405  * gtk_printer_accepts_pdf() and gtk_printer_accepts_ps().
 406  *
 407  * Returns: %FALSE if an error occurred
 408  *
 409  * Since: 2.10
 410  **/
 411 gboolean
 412 gtk_print_job_set_source_file (GtkPrintJob *job,
 413                                const gchar *filename,
 414                                GError     **error)
 415 {
 416   GtkPrintJobPrivate *priv;
 417   GError *tmp_error;
 418
 419   tmp_error = NULL;
 420
 421   g_return_val_if_fail (GTK_IS_PRINT_JOB (job), FALSE);
 422
 423   priv = job->priv;
 424
 425   priv->spool_io = g_io_channel_new_file (filename, "r", &tmp_error);
 426
 427   if (tmp_error == NULL)
 428     g_io_channel_set_encoding (priv->spool_io, NULL, &tmp_error);
 429
 430   if (tmp_error != NULL)
 431     {
 432       g_propagate_error (error, tmp_error);
 433       return FALSE;
 434     }
 435
 436   return TRUE;
 437 }
 438
 439 /**
 440  * gtk_print_job_get_surface:
 441  * @job: a #GtkPrintJob
 442  * @error: return location for errors, or %NULL
 443  *
 444  * Gets a cairo surface onto which the pages of
 445  * the print job should be rendered.
 446  *
 447  * Return value: the cairo surface of @job
 448  *
 449  * Since: 2.10
 450  **/
 451 cairo_surface_t *
 452 gtk_print_job_get_surface (GtkPrintJob  *job,
 453                            GError      **error)
 454 {
 455   GtkPrintJobPrivate *priv;
 456   gchar *filename;
 457   gdouble width, height;
 458   GtkPaperSize *paper_size;
 459   int fd;
 460   GError *tmp_error;
 461
 462   tmp_error = NULL;
 463
 464   g_return_val_if_fail (GTK_IS_PRINT_JOB (job), NULL);
 465
 466   priv = job->priv;
 467
 468   if (priv->surface)
 469     return priv->surface;
 470
 471   g_return_val_if_fail (priv->spool_io == NULL, NULL);
 472
 473   fd = g_file_open_tmp ("gtkprint_XXXXXX",
 474                          &filename,
 475                          &tmp_error);
 476   if (fd == -1)
 477     {
 478       g_free (filename);
 479       g_propagate_error (error, tmp_error);
 480       return NULL;
 481     }
 482
 483   fchmod (fd, S_IRUSR | S_IWUSR);
 484
 485 #ifdef G_ENABLE_DEBUG
 486   /* If we are debugging printing don't delete the tmp files */
 487   if (!(gtk_debug_flags & GTK_DEBUG_PRINTING))
 488 #endif /* G_ENABLE_DEBUG */
 489   g_unlink (filename);
 490   g_free (filename);
 491
 492   paper_size = gtk_page_setup_get_paper_size (priv->page_setup);
 493   width = gtk_paper_size_get_width (paper_size, GTK_UNIT_POINTS);
 494   height = gtk_paper_size_get_height (paper_size, GTK_UNIT_POINTS);
 495
 496   priv->spool_io = g_io_channel_unix_new (fd);
 497   g_io_channel_set_close_on_unref (priv->spool_io, TRUE);
 498   g_io_channel_set_encoding (priv->spool_io, NULL, &tmp_error);
 499
 500   if (tmp_error != NULL)
 501     {
 502       g_io_channel_unref (priv->spool_io);
 503       priv->spool_io = NULL;
 504       g_propagate_error (error, tmp_error);
 505       return NULL;
 506     }
 507
 508   priv->surface = _gtk_printer_create_cairo_surface (priv->printer,
 509                                                      priv->settings,
 510                                                      width, height,
 511                                                      priv->spool_io);
 512
 513   return priv->surface;
 514 }
 515
 516 /**
 517  * gtk_print_job_set_track_print_status:
 518  * @job: a #GtkPrintJob
 519  * @track_status: %TRUE to track status after printing
 520  *
 521  * If track_status is %TRUE, the print job will try to continue report
 522  * on the status of the print job in the printer queues and printer. This
 523  * can allow your application to show things like "out of paper" issues,
 524  * and when the print job actually reaches the printer.
 525  *
 526  * This function is often implemented using some form of polling, so it should
 527  * not be enabled unless needed.
 528  *
 529  * Since: 2.10
 530  */
 531 void
 532 gtk_print_job_set_track_print_status (GtkPrintJob *job,
 533                                       gboolean     track_status)
 534 {
 535   GtkPrintJobPrivate *priv;
 536
 537   g_return_if_fail (GTK_IS_PRINT_JOB (job));
 538
 539   priv = job->priv;
 540
 541   track_status = track_status != FALSE;
 542
 543   if (priv->track_print_status != track_status)
 544     {
 545       priv->track_print_status = track_status;
 546
 547       g_object_notify (G_OBJECT (job), "track-print-status");
 548     }
 549 }
 550
 551 /**
 552  * gtk_print_job_get_track_print_status:
 553  * @job: a #GtkPrintJob
 554  *
 555  * Returns wheter jobs will be tracked after printing.
 556  * For details, see gtk_print_job_set_track_print_status().
 557  *
 558  * Return value: %TRUE if print job status will be reported after printing
 559  *
 560  * Since: 2.10
 561  */
 562 gboolean
 563 gtk_print_job_get_track_print_status (GtkPrintJob *job)
 564 {
 565   GtkPrintJobPrivate *priv;
 566
 567   g_return_val_if_fail (GTK_IS_PRINT_JOB (job), FALSE);
 568
 569   priv = job->priv;
 570
 571   return priv->track_print_status;
 572 }
 573
 574 static void
 575 gtk_print_job_set_property (GObject      *object,
 576                             guint         prop_id,
 577                             const GValue *value,
 578                             GParamSpec   *pspec)
 579
 580 {
 581   GtkPrintJob *job = GTK_PRINT_JOB (object);
 582   GtkPrintJobPrivate *priv = job->priv;
 583   GtkPrintSettings *settings;
 584
 585   switch (prop_id)
 586     {
 587     case PROP_TITLE:
 588       g_free (priv->title);
 589       priv->title = g_value_dup_string (value);
 590       break;
 591
 592     case PROP_PRINTER:
 593       priv->printer = GTK_PRINTER (g_value_dup_object (value));
 594       priv->printer_set = TRUE;
 595       priv->backend = g_object_ref (gtk_printer_get_backend (priv->printer));
 596       break;
 597
 598     case PROP_PAGE_SETUP:
 599       priv->page_setup = GTK_PAGE_SETUP (g_value_dup_object (value));
 600       priv->page_setup_set = TRUE;
 601       break;
 602
 603     case PROP_SETTINGS:
 604       /* We save a copy of the settings since we modify
 605        * if when preparing the printer job. */
 606       settings = GTK_PRINT_SETTINGS (g_value_get_object (value));
 607       priv->settings = gtk_print_settings_copy (settings);
 608       priv->settings_set = TRUE;
 609       break;
 610
 611     case PROP_TRACK_PRINT_STATUS:
 612       gtk_print_job_set_track_print_status (job, g_value_get_boolean (value));
 613       break;
 614
 615     default:
 616       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 617       break;
 618     }
 619 }
 620
 621 static void
 622 gtk_print_job_get_property (GObject    *object,
 623                             guint       prop_id,
 624                             GValue     *value,
 625                             GParamSpec *pspec)
 626 {
 627   GtkPrintJob *job = GTK_PRINT_JOB (object);
 628   GtkPrintJobPrivate *priv = job->priv;
 629
 630   switch (prop_id)
 631     {
 632     case PROP_TITLE:
 633       g_value_set_string (value, priv->title);
 634       break;
 635     case PROP_PRINTER:
 636       g_value_set_object (value, priv->printer);
 637       break;
 638     case PROP_SETTINGS:
 639       g_value_set_object (value, priv->settings);
 640       break;
 641     case PROP_PAGE_SETUP:
 642       g_value_set_object (value, priv->page_setup);
 643       break;
 644     case PROP_TRACK_PRINT_STATUS:
 645       g_value_set_boolean (value, priv->track_print_status);
 646       break;
 647     default:
 648       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 649       break;
 650     }
 651 }
 652
 653 /**
 654  * gtk_print_job_send:
 655  * @job: a GtkPrintJob
 656  * @callback: function to call when the job completes or an error occurs
 657  * @user_data: user data that gets passed to @callback
 658  * @dnotify: destroy notify for @user_data
 659  *
 660  * Sends the print job off to the printer.
 661  *
 662  * Since: 2.10
 663  **/
 664 void
 665 gtk_print_job_send (GtkPrintJob             *job,
 666                     GtkPrintJobCompleteFunc  callback,
 667                     gpointer                 user_data,
 668                     GDestroyNotify           dnotify)
 669 {
 670   GtkPrintJobPrivate *priv;
 671
 672   g_return_if_fail (GTK_IS_PRINT_JOB (job));
 673
 674   priv = job->priv;
 675   g_return_if_fail (priv->spool_io != NULL);
 676
 677   gtk_print_job_set_status (job, GTK_PRINT_STATUS_SENDING_DATA);
 678
 679   g_io_channel_seek_position (priv->spool_io, 0, G_SEEK_SET, NULL);
 680
 681   gtk_print_backend_print_stream (priv->backend, job,
 682                                   priv->spool_io,
 683                                   callback, user_data, dnotify);
 684 }
 685
 686
 687 #define __GTK_PRINT_JOB_C__
 688 #include "gtkaliasdef.c"