summaryrefslogtreecommitdiff
path: root/gtk/gtkpagesetup.c
blob: 40c3bdeeb69b98f68b12c75704886e4b5647b7d6 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
/* GTK - The GIMP Toolkit
 * gtkpagesetup.c: Page Setup
 * Copyright (C) 2006, Red Hat, Inc.
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library. If not, see <http://www.gnu.org/licenses/>.
 */

#include "config.h"

#include "gtkpagesetup.h"
#include "gtkprintutils.h"
#include "gtkprintoperation.h" /* for GtkPrintError */
#include "gtkintl.h"
#include "gtktypebuiltins.h"

/**
 * SECTION:gtkpagesetup
 * @Short_description: Stores page setup information
 * @Title: GtkPageSetup
 *
 * A GtkPageSetup object stores the page size, orientation and margins.
 * The idea is that you can get one of these from the page setup dialog
 * and then pass it to the #GtkPrintOperation when printing.
 * The benefit of splitting this out of the #GtkPrintSettings is that
 * these affect the actual layout of the page, and thus need to be set
 * long before user prints.
 *
 * <para id="print-margins">
 * The margins specified in this object are the "print margins", i.e. the
 * parts of the page that the printer cannot print on. These are different
 * from the layout margins that a word processor uses; they are typically
 * used to determine the <emphasis>minimal</emphasis> size for the layout
 * margins.
 * </para>
 *
 * To obtain a #GtkPageSetup use gtk_page_setup_new() to get the defaults,
 * or use gtk_print_run_page_setup_dialog() to show the page setup dialog
 * and receive the resulting page setup.
 *
 * <example>
 * <title>A page setup dialog</title>
 * <programlisting>
 * static GtkPrintSettings *settings = NULL;
 * static GtkPageSetup *page_setup = NULL;
 *
 * static void
 * do_page_setup (void)
 * {
 *   GtkPageSetup *new_page_setup;
 *
 *   if (settings == NULL)
 *     settings = gtk_print_settings_new (<!-- -->);
 *
 *   new_page_setup = gtk_print_run_page_setup_dialog (GTK_WINDOW (main_window),
 *                                                     page_setup, settings);
 *
 *   if (page_setup)
 *     g_object_unref (page_setup);
 *
 *   page_setup = new_page_setup;
 * }
 * </programlisting>
 * </example>
 *
 * Printing support was added in GTK+ 2.10.
 */

#define KEYFILE_GROUP_NAME "Page Setup"

typedef struct _GtkPageSetupClass GtkPageSetupClass;

#define GTK_IS_PAGE_SETUP_CLASS(klass)  (G_TYPE_CHECK_CLASS_TYPE ((klass), GTK_TYPE_PAGE_SETUP))
#define GTK_PAGE_SETUP_CLASS(klass)     (G_TYPE_CHECK_CLASS_CAST ((klass), GTK_TYPE_PAGE_SETUP, GtkPageSetupClass))
#define GTK_PAGE_SETUP_GET_CLASS(obj)   (G_TYPE_INSTANCE_GET_CLASS ((obj), GTK_TYPE_PAGE_SETUP, GtkPageSetupClass))

struct _GtkPageSetup
{
  GObject parent_instance;

  GtkPageOrientation orientation;
  GtkPaperSize *paper_size;
  /* These are stored in mm */
  double top_margin, bottom_margin, left_margin, right_margin;
};

struct _GtkPageSetupClass
{
  GObjectClass parent_class;
};

G_DEFINE_TYPE (GtkPageSetup, gtk_page_setup, G_TYPE_OBJECT)

static void
gtk_page_setup_finalize (GObject *object)
{
  GtkPageSetup *setup = GTK_PAGE_SETUP (object);
  
  gtk_paper_size_free (setup->paper_size);
  
  G_OBJECT_CLASS (gtk_page_setup_parent_class)->finalize (object);
}

static void
gtk_page_setup_init (GtkPageSetup *setup)
{
  setup->paper_size = gtk_paper_size_new (NULL);
  setup->orientation = GTK_PAGE_ORIENTATION_PORTRAIT;
  setup->top_margin = gtk_paper_size_get_default_top_margin (setup->paper_size, GTK_UNIT_MM);
  setup->bottom_margin = gtk_paper_size_get_default_bottom_margin (setup->paper_size, GTK_UNIT_MM);
  setup->left_margin = gtk_paper_size_get_default_left_margin (setup->paper_size, GTK_UNIT_MM);
  setup->right_margin = gtk_paper_size_get_default_right_margin (setup->paper_size, GTK_UNIT_MM);
}

static void
gtk_page_setup_class_init (GtkPageSetupClass *class)
{
  GObjectClass *gobject_class = (GObjectClass *)class;

  gobject_class->finalize = gtk_page_setup_finalize;
}

/**
 * gtk_page_setup_new:
 *
 * Creates a new #GtkPageSetup. 
 * 
 * Return value: a new #GtkPageSetup.
 *
 * Since: 2.10
 */
GtkPageSetup *
gtk_page_setup_new (void)
{
  return g_object_new (GTK_TYPE_PAGE_SETUP, NULL);
}

/**
 * gtk_page_setup_copy:
 * @other: the #GtkPageSetup to copy
 *
 * Copies a #GtkPageSetup.
 *
 * Return value: (transfer full): a copy of @other
 *
 * Since: 2.10
 */
GtkPageSetup *
gtk_page_setup_copy (GtkPageSetup *other)
{
  GtkPageSetup *copy;

  copy = gtk_page_setup_new ();
  copy->orientation = other->orientation;
  gtk_paper_size_free (copy->paper_size);
  copy->paper_size = gtk_paper_size_copy (other->paper_size);
  copy->top_margin = other->top_margin;
  copy->bottom_margin = other->bottom_margin;
  copy->left_margin = other->left_margin;
  copy->right_margin = other->right_margin;

  return copy;
}

/**
 * gtk_page_setup_get_orientation:
 * @setup: a #GtkPageSetup
 * 
 * Gets the page orientation of the #GtkPageSetup.
 * 
 * Return value: the page orientation
 *
 * Since: 2.10
 */
GtkPageOrientation
gtk_page_setup_get_orientation (GtkPageSetup *setup)
{
  return setup->orientation;
}

/**
 * gtk_page_setup_set_orientation:
 * @setup: a #GtkPageSetup
 * @orientation: a #GtkPageOrientation value
 * 
 * Sets the page orientation of the #GtkPageSetup.
 *
 * Since: 2.10
 */
void
gtk_page_setup_set_orientation (GtkPageSetup       *setup,
				GtkPageOrientation  orientation)
{
  setup->orientation = orientation;
}

/**
 * gtk_page_setup_get_paper_size:
 * @setup: a #GtkPageSetup
 * 
 * Gets the paper size of the #GtkPageSetup.
 * 
 * Return value: the paper size
 *
 * Since: 2.10
 */
GtkPaperSize *
gtk_page_setup_get_paper_size (GtkPageSetup *setup)
{
  g_return_val_if_fail (GTK_IS_PAGE_SETUP (setup), NULL);

  return setup->paper_size;
}

/**
 * gtk_page_setup_set_paper_size:
 * @setup: a #GtkPageSetup
 * @size: a #GtkPaperSize 
 * 
 * Sets the paper size of the #GtkPageSetup without
 * changing the margins. See 
 * gtk_page_setup_set_paper_size_and_default_margins().
 *
 * Since: 2.10
 */
void
gtk_page_setup_set_paper_size (GtkPageSetup *setup,
			       GtkPaperSize *size)
{
  GtkPaperSize *old_size;

  g_return_if_fail (GTK_IS_PAGE_SETUP (setup));
  g_return_if_fail (size != NULL);

  old_size = setup->paper_size;

  setup->paper_size = gtk_paper_size_copy (size);

  if (old_size)
    gtk_paper_size_free (old_size);
}

/**
 * gtk_page_setup_set_paper_size_and_default_margins:
 * @setup: a #GtkPageSetup
 * @size: a #GtkPaperSize 
 * 
 * Sets the paper size of the #GtkPageSetup and modifies
 * the margins according to the new paper size.
 *
 * Since: 2.10
 */
void
gtk_page_setup_set_paper_size_and_default_margins (GtkPageSetup *setup,
						   GtkPaperSize *size)
{
  gtk_page_setup_set_paper_size (setup, size);
  setup->top_margin = gtk_paper_size_get_default_top_margin (setup->paper_size, GTK_UNIT_MM);
  setup->bottom_margin = gtk_paper_size_get_default_bottom_margin (setup->paper_size, GTK_UNIT_MM);
  setup->left_margin = gtk_paper_size_get_default_left_margin (setup->paper_size, GTK_UNIT_MM);
  setup->right_margin = gtk_paper_size_get_default_right_margin (setup->paper_size, GTK_UNIT_MM);
}

/**
 * gtk_page_setup_get_top_margin:
 * @setup: a #GtkPageSetup
 * @unit: the unit for the return value
 * 
 * Gets the top margin in units of @unit.
 * 
 * Return value: the top margin
 *
 * Since: 2.10
 */
gdouble
gtk_page_setup_get_top_margin (GtkPageSetup *setup,
			       GtkUnit       unit)
{
  return _gtk_print_convert_from_mm (setup->top_margin, unit);
}

/**
 * gtk_page_setup_set_top_margin:
 * @setup: a #GtkPageSetup
 * @margin: the new top margin in units of @unit
 * @unit: the units for @margin
 * 
 * Sets the top margin of the #GtkPageSetup.
 *
 * Since: 2.10
 */
void
gtk_page_setup_set_top_margin (GtkPageSetup *setup,
			       gdouble       margin,
			       GtkUnit       unit)
{
  setup->top_margin = _gtk_print_convert_to_mm (margin, unit);
}

/**
 * gtk_page_setup_get_bottom_margin:
 * @setup: a #GtkPageSetup
 * @unit: the unit for the return value
 * 
 * Gets the bottom margin in units of @unit.
 * 
 * Return value: the bottom margin
 *
 * Since: 2.10
 */
gdouble
gtk_page_setup_get_bottom_margin (GtkPageSetup *setup,
				  GtkUnit       unit)
{
  return _gtk_print_convert_from_mm (setup->bottom_margin, unit);
}

/**
 * gtk_page_setup_set_bottom_margin:
 * @setup: a #GtkPageSetup
 * @margin: the new bottom margin in units of @unit
 * @unit: the units for @margin
 * 
 * Sets the bottom margin of the #GtkPageSetup.
 *
 * Since: 2.10
 */
void
gtk_page_setup_set_bottom_margin (GtkPageSetup *setup,
				  gdouble       margin,
				  GtkUnit       unit)
{
  setup->bottom_margin = _gtk_print_convert_to_mm (margin, unit);
}

/**
 * gtk_page_setup_get_left_margin:
 * @setup: a #GtkPageSetup
 * @unit: the unit for the return value
 * 
 * Gets the left margin in units of @unit.
 * 
 * Return value: the left margin
 *
 * Since: 2.10
 */
gdouble
gtk_page_setup_get_left_margin (GtkPageSetup *setup,
				GtkUnit       unit)
{
  return _gtk_print_convert_from_mm (setup->left_margin, unit);
}

/**
 * gtk_page_setup_set_left_margin:
 * @setup: a #GtkPageSetup
 * @margin: the new left margin in units of @unit
 * @unit: the units for @margin
 * 
 * Sets the left margin of the #GtkPageSetup.
 *
 * Since: 2.10
 */
void
gtk_page_setup_set_left_margin (GtkPageSetup *setup,
				gdouble       margin,
				GtkUnit       unit)
{
  setup->left_margin = _gtk_print_convert_to_mm (margin, unit);
}

/**
 * gtk_page_setup_get_right_margin:
 * @setup: a #GtkPageSetup
 * @unit: the unit for the return value
 * 
 * Gets the right margin in units of @unit.
 * 
 * Return value: the right margin
 *
 * Since: 2.10
 */
gdouble
gtk_page_setup_get_right_margin (GtkPageSetup *setup,
				 GtkUnit       unit)
{
  return _gtk_print_convert_from_mm (setup->right_margin, unit);
}

/**
 * gtk_page_setup_set_right_margin:
 * @setup: a #GtkPageSetup
 * @margin: the new right margin in units of @unit
 * @unit: the units for @margin
 * 
 * Sets the right margin of the #GtkPageSetup.
 *
 * Since: 2.10
 */
void
gtk_page_setup_set_right_margin (GtkPageSetup *setup,
				 gdouble       margin,
				 GtkUnit       unit)
{
  setup->right_margin = _gtk_print_convert_to_mm (margin, unit);
}

/**
 * gtk_page_setup_get_paper_width:
 * @setup: a #GtkPageSetup
 * @unit: the unit for the return value
 * 
 * Returns the paper width in units of @unit.
 * 
 * Note that this function takes orientation, but 
 * not margins into consideration. 
 * See gtk_page_setup_get_page_width().
 *
 * Return value: the paper width.
 *
 * Since: 2.10
 */
gdouble
gtk_page_setup_get_paper_width (GtkPageSetup *setup,
				GtkUnit       unit)
{
  if (setup->orientation == GTK_PAGE_ORIENTATION_PORTRAIT ||
      setup->orientation == GTK_PAGE_ORIENTATION_REVERSE_PORTRAIT)
    return gtk_paper_size_get_width (setup->paper_size, unit);
  else
    return gtk_paper_size_get_height (setup->paper_size, unit);
}

/**
 * gtk_page_setup_get_paper_height:
 * @setup: a #GtkPageSetup
 * @unit: the unit for the return value
 * 
 * Returns the paper height in units of @unit.
 * 
 * Note that this function takes orientation, but 
 * not margins into consideration.
 * See gtk_page_setup_get_page_height().
 *
 * Return value: the paper height.
 *
 * Since: 2.10
 */
gdouble
gtk_page_setup_get_paper_height (GtkPageSetup *setup,
				 GtkUnit       unit)
{
  if (setup->orientation == GTK_PAGE_ORIENTATION_PORTRAIT ||
      setup->orientation == GTK_PAGE_ORIENTATION_REVERSE_PORTRAIT)
    return gtk_paper_size_get_height (setup->paper_size, unit);
  else
    return gtk_paper_size_get_width (setup->paper_size, unit);
}

/**
 * gtk_page_setup_get_page_width:
 * @setup: a #GtkPageSetup
 * @unit: the unit for the return value
 * 
 * Returns the page width in units of @unit.
 * 
 * Note that this function takes orientation and
 * margins into consideration. 
 * See gtk_page_setup_get_paper_width().
 *
 * Return value: the page width.
 *
 * Since: 2.10
 */
gdouble
gtk_page_setup_get_page_width (GtkPageSetup *setup,
			       GtkUnit       unit)
{
  gdouble width;
  
  width = gtk_page_setup_get_paper_width (setup, GTK_UNIT_MM);
  width -= setup->left_margin + setup->right_margin;
  
  return _gtk_print_convert_from_mm (width, unit);
}

/**
 * gtk_page_setup_get_page_height:
 * @setup: a #GtkPageSetup
 * @unit: the unit for the return value
 * 
 * Returns the page height in units of @unit.
 * 
 * Note that this function takes orientation and
 * margins into consideration. 
 * See gtk_page_setup_get_paper_height().
 *
 * Return value: the page height.
 *
 * Since: 2.10
 */
gdouble
gtk_page_setup_get_page_height (GtkPageSetup *setup,
				GtkUnit       unit)
{
  gdouble height;
  
  height = gtk_page_setup_get_paper_height (setup, GTK_UNIT_MM);
  height -= setup->top_margin + setup->bottom_margin;
  
  return _gtk_print_convert_from_mm (height, unit);
}

/**
 * gtk_page_setup_load_file:
 * @setup: a #GtkPageSetup
 * @file_name: (type filename): the filename to read the page setup from
 * @error: (allow-none): return location for an error, or %NULL
 *
 * Reads the page setup from the file @file_name.
 * See gtk_page_setup_to_file().
 *
 * Return value: %TRUE on success
 *
 * Since: 2.14
 */
gboolean
gtk_page_setup_load_file (GtkPageSetup *setup,
                          const gchar  *file_name,
			  GError      **error)
{
  gboolean retval = FALSE;
  GKeyFile *key_file;

  g_return_val_if_fail (GTK_IS_PAGE_SETUP (setup), FALSE);
  g_return_val_if_fail (file_name != NULL, FALSE);

  key_file = g_key_file_new ();

  if (g_key_file_load_from_file (key_file, file_name, 0, error) &&
      gtk_page_setup_load_key_file (setup, key_file, NULL, error))
    retval = TRUE;

  g_key_file_free (key_file);

  return retval;
}

/**
 * gtk_page_setup_new_from_file:
 * @file_name: (type filename): the filename to read the page setup from
 * @error: (allow-none): return location for an error, or %NULL
 * 
 * Reads the page setup from the file @file_name. Returns a 
 * new #GtkPageSetup object with the restored page setup, 
 * or %NULL if an error occurred. See gtk_page_setup_to_file().
 *
 * Return value: the restored #GtkPageSetup
 * 
 * Since: 2.12
 */
GtkPageSetup *
gtk_page_setup_new_from_file (const gchar  *file_name,
			      GError      **error)
{
  GtkPageSetup *setup = gtk_page_setup_new ();

  if (!gtk_page_setup_load_file (setup, file_name, error))
    {
      g_object_unref (setup);
      setup = NULL;
    }

  return setup;
}

/* something like this should really be in gobject! */
static guint
string_to_enum (GType type,
                const char *enum_string)
{
  GEnumClass *enum_class;
  const GEnumValue *value;
  guint retval = 0;

  g_return_val_if_fail (enum_string != NULL, 0);

  enum_class = g_type_class_ref (type);
  value = g_enum_get_value_by_nick (enum_class, enum_string);
  if (value)
    retval = value->value;

  g_type_class_unref (enum_class);

  return retval;
}

/**
 * gtk_page_setup_load_key_file:
 * @setup: a #GtkPageSetup
 * @key_file: the #GKeyFile to retrieve the page_setup from
 * @group_name: (allow-none): the name of the group in the key_file to read, or %NULL
 *              to use the default name "Page Setup"
 * @error: (allow-none): return location for an error, or %NULL
 * 
 * Reads the page setup from the group @group_name in the key file
 * @key_file.
 * 
 * Return value: %TRUE on success
 *
 * Since: 2.14
 */
gboolean
gtk_page_setup_load_key_file (GtkPageSetup *setup,
                              GKeyFile     *key_file,
                              const gchar  *group_name,
                              GError      **error)
{
  GtkPaperSize *paper_size;
  gdouble top, bottom, left, right;
  char *orientation = NULL, *freeme = NULL;
  gboolean retval = FALSE;
  GError *err = NULL;

  g_return_val_if_fail (GTK_IS_PAGE_SETUP (setup), FALSE);
  g_return_val_if_fail (key_file != NULL, FALSE);

  if (!group_name)
    group_name = KEYFILE_GROUP_NAME;

  if (!g_key_file_has_group (key_file, group_name))
    {
      g_set_error_literal (error,
                           GTK_PRINT_ERROR,
                           GTK_PRINT_ERROR_INVALID_FILE,
                           _("Not a valid page setup file"));
      goto out;
    }

#define GET_DOUBLE(kf, group, name, v) \
  v = g_key_file_get_double (kf, group, name, &err); \
  if (err != NULL) \
    { \
      g_propagate_error (error, err);\
      goto out;\
    }

  GET_DOUBLE (key_file, group_name, "MarginTop", top);
  GET_DOUBLE (key_file, group_name, "MarginBottom", bottom);
  GET_DOUBLE (key_file, group_name, "MarginLeft", left);
  GET_DOUBLE (key_file, group_name, "MarginRight", right);

#undef GET_DOUBLE

  paper_size = gtk_paper_size_new_from_key_file (key_file, group_name, &err);
  if (!paper_size)
    {
      g_propagate_error (error, err);
      goto out;
    }

  gtk_page_setup_set_paper_size (setup, paper_size);
  gtk_paper_size_free (paper_size);

  gtk_page_setup_set_top_margin (setup, top, GTK_UNIT_MM);
  gtk_page_setup_set_bottom_margin (setup, bottom, GTK_UNIT_MM);
  gtk_page_setup_set_left_margin (setup, left, GTK_UNIT_MM);
  gtk_page_setup_set_right_margin (setup, right, GTK_UNIT_MM);

  orientation = g_key_file_get_string (key_file, group_name,
				       "Orientation", NULL);
  if (orientation)
    {
      gtk_page_setup_set_orientation (setup,
				      string_to_enum (GTK_TYPE_PAGE_ORIENTATION,
						      orientation));
      g_free (orientation);
    }

  retval = TRUE;

out:
  g_free (freeme);
  return retval;
}

/**
 * gtk_page_setup_new_from_key_file:
 * @key_file: the #GKeyFile to retrieve the page_setup from
 * @group_name: (allow-none): the name of the group in the key_file to read, or %NULL
 *              to use the default name "Page Setup"
 * @error: (allow-none): return location for an error, or %NULL
 *
 * Reads the page setup from the group @group_name in the key file
 * @key_file. Returns a new #GtkPageSetup object with the restored
 * page setup, or %NULL if an error occurred.
 *
 * Return value: the restored #GtkPageSetup
 *
 * Since: 2.12
 */
GtkPageSetup *
gtk_page_setup_new_from_key_file (GKeyFile     *key_file,
				  const gchar  *group_name,
				  GError      **error)
{
  GtkPageSetup *setup = gtk_page_setup_new ();

  if (!gtk_page_setup_load_key_file (setup, key_file, group_name, error))
    {
      g_object_unref (setup);
      setup = NULL;
    }

  return setup;
}

/**
 * gtk_page_setup_to_file:
 * @setup: a #GtkPageSetup
 * @file_name: (type filename): the file to save to
 * @error: (allow-none): return location for errors, or %NULL
 * 
 * This function saves the information from @setup to @file_name.
 * 
 * Return value: %TRUE on success
 *
 * Since: 2.12
 */
gboolean
gtk_page_setup_to_file (GtkPageSetup  *setup,
		        const char    *file_name,
			GError       **error)
{
  GKeyFile *key_file;
  gboolean retval = FALSE;
  char *data = NULL;
  gsize len;

  g_return_val_if_fail (GTK_IS_PAGE_SETUP (setup), FALSE);
  g_return_val_if_fail (file_name != NULL, FALSE);

  key_file = g_key_file_new ();
  gtk_page_setup_to_key_file (setup, key_file, NULL);

  data = g_key_file_to_data (key_file, &len, error);
  if (!data)
    goto out;

  retval = g_file_set_contents (file_name, data, len, error);

out:
  g_key_file_free (key_file);
  g_free (data);

  return retval;
}

/* something like this should really be in gobject! */
static char *
enum_to_string (GType type,
                guint enum_value)
{
  GEnumClass *enum_class;
  GEnumValue *value;
  char *retval = NULL;

  enum_class = g_type_class_ref (type);

  value = g_enum_get_value (enum_class, enum_value);
  if (value)
    retval = g_strdup (value->value_nick);

  g_type_class_unref (enum_class);

  return retval;
}

/**
 * gtk_page_setup_to_key_file:
 * @setup: a #GtkPageSetup
 * @key_file: the #GKeyFile to save the page setup to
 * @group_name: the group to add the settings to in @key_file, 
 *      or %NULL to use the default name "Page Setup"
 * 
 * This function adds the page setup from @setup to @key_file.
 * 
 * Since: 2.12
 */
void
gtk_page_setup_to_key_file (GtkPageSetup *setup,
			    GKeyFile     *key_file,
			    const gchar  *group_name)
{
  GtkPaperSize *paper_size;
  char *orientation;

  g_return_if_fail (GTK_IS_PAGE_SETUP (setup));
  g_return_if_fail (key_file != NULL);

  if (!group_name)
    group_name = KEYFILE_GROUP_NAME;

  paper_size = gtk_page_setup_get_paper_size (setup);
  g_assert (paper_size != NULL);

  gtk_paper_size_to_key_file (paper_size, key_file, group_name);

  g_key_file_set_double (key_file, group_name,
			 "MarginTop", gtk_page_setup_get_top_margin (setup, GTK_UNIT_MM));
  g_key_file_set_double (key_file, group_name,
			 "MarginBottom", gtk_page_setup_get_bottom_margin (setup, GTK_UNIT_MM));
  g_key_file_set_double (key_file, group_name,
			 "MarginLeft", gtk_page_setup_get_left_margin (setup, GTK_UNIT_MM));
  g_key_file_set_double (key_file, group_name,
			 "MarginRight", gtk_page_setup_get_right_margin (setup, GTK_UNIT_MM));

  orientation = enum_to_string (GTK_TYPE_PAGE_ORIENTATION,
				gtk_page_setup_get_orientation (setup));
  g_key_file_set_string (key_file, group_name,
			 "Orientation", orientation);
  g_free (orientation);
}