summaryrefslogtreecommitdiff
path: root/battstat/battstat_applet.c
blob: 9cc791eae97068ad403d27aee5d158243a523892 (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
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
/* battstat        A MATE battery meter for laptops.
 * Copyright (C) 2000 by Jörgen Pehrson <jp@spektr.eu.org>
 * Copyright (C) 2002 Free Software Foundation
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  This program 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 General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Street #330, Boston, MA 02110-1301, USA.
 *
 $Id$
 */

#ifdef HAVE_CONFIG_H
#include <config.h>
#endif

#include <stdio.h>

#include <sys/types.h>
#include <sys/wait.h>
#ifdef HAVE_ERR_H
#include <err.h>
#endif
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <unistd.h>

#include <gtk/gtk.h>

#include <mate-panel-applet.h>
#include <mate-panel-applet-gsettings.h>

#ifdef HAVE_LIBNOTIFY
#include <libnotify/notify.h>
#endif

#include "battstat.h"

#ifndef gettext_noop
#define gettext_noop(String) (String)
#endif

#define BATTSTAT_SCHEMA "org.mate.panel.applet.battstat"

static gboolean check_for_updates (gpointer data);
static void about_cb( GtkAction *, ProgressData * );
static void help_cb( GtkAction *, ProgressData * );

static const GtkActionEntry battstat_menu_actions [] = {
	{ "BattstatProperties", "document-properties", N_("_Preferences"),
	  NULL, NULL,
	  G_CALLBACK (prop_cb) },
	{ "BattstatHelp", "help-browser", N_("_Help"),
	  NULL, NULL,
	  G_CALLBACK (help_cb) },
	{ "BattstatAbout", "help-about", N_("_About"),
	  NULL, NULL,
	  G_CALLBACK (about_cb) }
};

#define AC_POWER_STRING _("System is running on AC power")
#define DC_POWER_STRING _("System is running on battery power")

/* Our backends may be either event driven or poll-based.
 * If they are event driven then we know this the first time we
 * receive an event.
 */
static gboolean event_driven = FALSE;
static GSList *instances;

static void
status_change_callback (void)
{
  GSList *instance;

  for (instance = instances; instance; instance = instance->next)
  {
    ProgressData *battstat = instance->data;

    if (battstat->timeout_id)
    {
      g_source_remove (battstat->timeout_id);
      battstat->timeout_id = 0;
    }

    check_for_updates (battstat);
  }

  event_driven = TRUE;
}

/* The following two functions keep track of how many instances of the applet
   are currently running.  When the first instance is started, some global
   initialisation is done.  When the last instance exits, cleanup occurs.

   The teardown code here isn't entirely complete (for example, it doesn't
   deallocate the GdkColors or free the GdkPixmaps.  This is OK so long
   as the process quits immediately when the last applet is removed (which
   it does.)
*/
static const char *
static_global_initialisation (ProgressData *battstat)
{
  gboolean first_time;
  const char *err;

  first_time = !instances;

  instances = g_slist_prepend (instances, battstat);

  if (!first_time)
    return NULL;

  err = power_management_initialise (status_change_callback);

  return err;
}

static void
static_global_teardown (ProgressData *battstat)
{
  instances = g_slist_remove (instances, battstat);

  /* remaining instances... */
  if (instances)
    return;

  /* instances == 0 */

  power_management_cleanup();
}

/* Pop up an error dialog on the same screen as 'applet' saying 'msg'.
 */
static void
battstat_error_dialog( GtkWidget *applet, const char *msg )
{
  GtkWidget *dialog;

  dialog = gtk_message_dialog_new( NULL, 0, GTK_MESSAGE_ERROR,
                                   GTK_BUTTONS_OK, "%s", msg);

  gtk_window_set_screen( GTK_WINDOW (dialog),
                         gtk_widget_get_screen (GTK_WIDGET (applet)) );

  g_signal_connect_swapped( G_OBJECT (dialog), "response",
                            G_CALLBACK (gtk_widget_destroy),
                            G_OBJECT (dialog) );

  gtk_widget_show_all( dialog );
}

/* Format a string describing how much time is left to fully (dis)charge
   the battery. The return value must be g_free()d.
*/
static char *
get_remaining (BatteryStatus *info)
{
	int hours;
	int mins;

	hours = info->minutes / 60;
	mins = info->minutes % 60;

	if (info->on_ac_power && !info->charging)
		return g_strdup_printf (_("Battery charged (%d%%)"), info->percent);
	else if (info->minutes < 0 && !info->on_ac_power)
		return g_strdup_printf (_("Unknown time (%d%%) remaining"), info->percent);
	else if (info->minutes < 0 && info->on_ac_power)
		return g_strdup_printf (_("Unknown time (%d%%) until charged"), info->percent);
	else
		if (hours == 0)
			if (!info->on_ac_power)
				return g_strdup_printf (ngettext (
						"%d minute (%d%%) remaining",
						"%d minutes (%d%%) remaining",
						mins), mins, info->percent);
			else
				return g_strdup_printf (ngettext (
						"%d minute until charged (%d%%)",
						"%d minutes until charged (%d%%)",
						mins), mins, info->percent);
		else if (mins == 0)
			if (!info->on_ac_power)
				return g_strdup_printf (ngettext (
						"%d hour (%d%%) remaining",
						"%d hours (%d%%) remaining",
						hours), hours, info->percent);
			else
				return g_strdup_printf (ngettext (
						"%d hour until charged (%d%%)",
						"%d hours until charged (%d%%)",
						hours), hours, info->percent);
		else
			if (!info->on_ac_power)
				/* TRANSLATOR: "%d %s %d %s" are "%d hours %d minutes"
				 * Swap order with "%2$s %2$d %1$s %1$d if needed */
				return g_strdup_printf (_("%d %s %d %s (%d%%) remaining"),
						hours, ngettext ("hour", "hours", hours),
						mins, ngettext ("minute", "minutes", mins),
						info->percent);
			else
				/* TRANSLATOR: "%d %s %d %s" are "%d hours %d minutes"
				 * Swap order with "%2$s %2$d %1$s %1$d if needed */
				return g_strdup_printf (_("%d %s %d %s until charged (%d%%)"),
						hours, ngettext ("hour", "hours", hours),
						mins, ngettext ("minute", "minutes", mins),
						info->percent);
}

static gboolean
battery_full_notify (GtkWidget *applet)
{
#ifdef HAVE_LIBNOTIFY
	GError *error = NULL;
	GdkPixbuf *icon;
	gboolean result;

	if (!notify_is_initted () && !notify_init (_("Battery Monitor")))
		return FALSE;

	icon = gtk_icon_theme_load_icon_for_scale (
			gtk_icon_theme_get_default (),
			"battery",
			48,
			gtk_widget_get_scale_factor (applet),
			GTK_ICON_LOOKUP_USE_BUILTIN,
			NULL);

	NotifyNotification *n = notify_notification_new (_("Your battery is now fully recharged"), "", /* "battery" */ NULL);

	notify_notification_set_image_from_pixbuf (n, icon);
	g_object_unref (icon);

	result = notify_notification_show (n, &error);

	if (error)
	{
	   g_warning ("%s", error->message);
	   g_error_free (error);
	}

	g_object_unref (G_OBJECT (n));

	return result;
#else
	return FALSE;
#endif
}

/* Show a dialog notifying the user that their battery is done charging.
 */
static void
battery_full_dialog (GtkWidget *applet)
{
  /* first attempt to use libnotify */
  if (battery_full_notify (applet))
	  return;

  GtkWidget *dialog, *hbox, *image, *label;
  cairo_surface_t *surface;

  gchar *new_label;
  dialog = gtk_dialog_new_with_buttons (
		_("Battery Notice"),
		NULL,
		GTK_DIALOG_DESTROY_WITH_PARENT,
		"gtk-ok",
		GTK_RESPONSE_ACCEPT,
		NULL);
  g_signal_connect_swapped (G_OBJECT (dialog), "response",
			    G_CALLBACK (gtk_widget_destroy),
			    G_OBJECT (dialog));

  gtk_container_set_border_width (GTK_CONTAINER (dialog), 6);
  hbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 6);
  surface = gtk_icon_theme_load_surface (
		gtk_icon_theme_get_default (),
		"battery",
		48,
		gtk_widget_get_scale_factor (applet),
		NULL,
		GTK_ICON_LOOKUP_USE_BUILTIN,
		NULL);
  image = gtk_image_new_from_surface (surface);
  cairo_surface_destroy (surface);
  gtk_box_pack_start (GTK_BOX (hbox), image, TRUE, TRUE, 6);
  new_label = g_strdup_printf (
		"<span weight=\"bold\" size=\"larger\">%s</span>",
 		_("Your battery is now fully recharged"));
  label = gtk_label_new (new_label);
  g_free (new_label);
  gtk_label_set_line_wrap (GTK_LABEL (label), TRUE);
  gtk_label_set_use_markup (GTK_LABEL (label), TRUE);
  gtk_box_pack_start (GTK_BOX (hbox), label, TRUE, TRUE, 6);
  gtk_container_add (GTK_CONTAINER (gtk_dialog_get_content_area (GTK_DIALOG (dialog))), hbox);
  gtk_window_set_keep_above (GTK_WINDOW (dialog), TRUE);
  gtk_window_stick (GTK_WINDOW (dialog));
  gtk_window_set_skip_pager_hint (GTK_WINDOW (dialog), TRUE);
  gtk_window_set_focus_on_map (GTK_WINDOW (dialog), FALSE);
  gtk_widget_show_all (dialog);
}

/* Destroy the low battery notification dialog and mark it as such.
 */
static void
battery_low_dialog_destroy( ProgressData *battstat )
{
  gtk_widget_destroy( battstat->battery_low_dialog );
  battstat->battery_low_dialog = NULL;
  battstat->battery_low_label = NULL;
}

/* Determine if suspend is unsupported.  For the time being this involves
 * distribution-specific magic :(
 */
/* #define HAVE_PMI */
static gboolean
is_suspend_unavailable( void )
{
#ifdef HAVE_PMI
  int status;

  status = system( "pmi query suspend" );

  /* -1 - fail (pmi unavailable?).     return 'false' since we don't know.
   * 0  - success (can suspend).       return 'false' since not unavailable.
   * 1  - success (cannot suspend).    return 'true' since unavailable.
   */
  if( WEXITSTATUS( status ) == 1 )
    return TRUE;
  else
    return FALSE;
#else
  return FALSE; /* return 'false' since we don't know. */
#endif
}

/* Update the text label in the battery low dialog.
 */
static void
battery_low_update_text( ProgressData *battstat, BatteryStatus *info )
{
  const char *suggest;
  gchar *remaining, *new_label;
  GtkRequisition size;

  /* If we're not displaying the dialog then don't update it. */
  if( battstat->battery_low_label == NULL ||
      battstat->battery_low_dialog == NULL )
    return;

  gtk_widget_get_preferred_size (GTK_WIDGET (battstat->battery_low_label), NULL, &size);

  /* If the label has never been set before, the width will be 0.  If it
     has been set before (width > 0) then we want to keep the size of
     the old widget (to keep the dialog from changing sizes) so we set it
     explicitly here.
   */
  if( size.width > 0 )
    gtk_widget_set_size_request( GTK_WIDGET( battstat->battery_low_label ),
                                 size.width, size.height );

  if (info->minutes < 0 && !info->on_ac_power)
  {
	  /* we don't know the remaining time */
	  remaining = g_strdup_printf (_("You have %d%% of your total battery "
				  	 "capacity remaining."), info->percent);
  }
  else
  {
	  remaining = g_strdup_printf( ngettext(
                                 "You have %d minute of battery power "
				   "remaining (%d%% of the total capacity).",
                                 "You have %d minutes of battery power "
				   "remaining (%d%% of the total capacity).",
                                 info->minutes ),
                               info->minutes,info->percent );
  }

  if( is_suspend_unavailable() )
    /* TRANSLATORS: this is a list, it is left as a single string
     * to allow you to make it appear like a list would in your
     * locale.  This is if the laptop does not support suspend. */
    suggest = _("To avoid losing your work:\n"
                " \xE2\x80\xA2 plug your laptop into external power, or\n"
                " \xE2\x80\xA2 save open documents and shut your laptop down."
               );
  else
    /* TRANSLATORS: this is a list, it is left as a single string
     * to allow you to make it appear like a list would in your
     * locale.  This is if the laptop supports suspend. */
    suggest = _("To avoid losing your work:\n"
                " \xE2\x80\xA2 suspend your laptop to save power,\n"
                " \xE2\x80\xA2 plug your laptop into external power, or\n"
                " \xE2\x80\xA2 save open documents and shut your laptop down."
               );

  new_label = g_strdup_printf(
		"<span weight=\"bold\" size=\"larger\">%s</span>\n\n%s\n\n%s",
		_("Your battery is running low"), remaining, suggest );

  gtk_label_set_markup( battstat->battery_low_label, new_label );
  g_free( remaining );
  g_free( new_label );
}

/* Show a dialog notifying the user that their battery is running low.
 */
static void
battery_low_dialog( ProgressData *battery, BatteryStatus *info )
{
  GtkWidget *hbox, *image, *label;
  GtkWidget *vbox;
  cairo_surface_t *surface;

  /* If the dialog is already displayed then don't display it again. */
  if( battery->battery_low_dialog != NULL )
    return;

  battery->battery_low_dialog = gtk_dialog_new_with_buttons (
		 _("Battery Notice"),
		 NULL,
		 GTK_DIALOG_DESTROY_WITH_PARENT,
		 "gtk-ok",
		 GTK_RESPONSE_ACCEPT,
		 NULL);
  gtk_dialog_set_default_response( GTK_DIALOG (battery->battery_low_dialog),
                                   GTK_RESPONSE_ACCEPT );

  g_signal_connect_swapped( G_OBJECT (battery->battery_low_dialog),
                            "response",
                            G_CALLBACK (battery_low_dialog_destroy),
                            battery );

  gtk_container_set_border_width (GTK_CONTAINER (battery->battery_low_dialog),
		  6);
  hbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 6);
  gtk_container_set_border_width (GTK_CONTAINER (hbox), 6);
  surface = gtk_icon_theme_load_surface (gtk_icon_theme_get_default (),
		 "battery",
		 48,
		 gtk_widget_get_scale_factor (GTK_WIDGET (hbox)),
		 NULL,
		 GTK_ICON_LOOKUP_USE_BUILTIN,
		 NULL);
  image = gtk_image_new_from_surface (surface);
  cairo_surface_destroy (surface);
  vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 0);
  gtk_box_pack_start (GTK_BOX (hbox), vbox, FALSE, FALSE, 6);
  gtk_box_pack_start (GTK_BOX (vbox), image, FALSE, FALSE, 0);
  label = gtk_label_new ("");
  battery->battery_low_label = GTK_LABEL( label );
  gtk_label_set_line_wrap( battery->battery_low_label, TRUE );
  gtk_label_set_selectable( battery->battery_low_label, TRUE );
  gtk_box_pack_start (GTK_BOX (hbox), label, FALSE, FALSE, 6);
  gtk_container_add (GTK_CONTAINER (gtk_dialog_get_content_area (GTK_DIALOG (battery->battery_low_dialog))), hbox);

  gtk_window_set_keep_above (GTK_WINDOW (battery->battery_low_dialog), TRUE);
  gtk_window_stick (GTK_WINDOW (battery->battery_low_dialog));
  gtk_window_set_focus_on_map (GTK_WINDOW (battery->battery_low_dialog),
		  FALSE);
  gtk_window_set_skip_pager_hint (GTK_WINDOW (battery->battery_low_dialog),
		  TRUE);

  battery_low_update_text( battery, info );

  gtk_window_set_position (GTK_WINDOW (battery->battery_low_dialog),
		  GTK_WIN_POS_CENTER);
  gtk_widget_show_all (battery->battery_low_dialog);
}

/* Update the text of the tooltip from the provided info.
 */
static void
update_tooltip( ProgressData *battstat, BatteryStatus *info )
{
  gchar *powerstring;
  gchar *remaining;
  gchar *tiptext;

  if (info->present)
  {
    if (info->on_ac_power)
      powerstring = AC_POWER_STRING;
    else
      powerstring = DC_POWER_STRING;

    remaining = get_remaining (info);

    tiptext = g_strdup_printf ("%s\n%s", powerstring, remaining);
    g_free (remaining);
  }
  else
  {
    if (info->on_ac_power)
      tiptext = g_strdup_printf ("%s\n%s", AC_POWER_STRING,
                                 _("No battery present"));
    else
      tiptext = g_strdup_printf ("%s\n%s", DC_POWER_STRING,
                                 _("Battery status unknown"));
  }

  gtk_widget_set_tooltip_text (battstat->applet, tiptext);
  g_free (tiptext);
}

/* Update the text label that either shows the percentage of time left.
 */
static void
update_percent_label( ProgressData *battstat, BatteryStatus *info )
{
  gchar *new_label;

  if (info->present && battstat->showtext == APPLET_SHOW_PERCENT)
    new_label = g_strdup_printf ("%d%%", info->percent);
  else if (info->present && battstat->showtext == APPLET_SHOW_TIME)
  {
    /* Fully charged or unknown (-1) time remaining display none */
    if ((info->on_ac_power && info->percent == 100) || info->minutes < 0)
      new_label = g_strdup ("");
    else
    {
      int time;
      time = info->minutes;
      new_label = g_strdup_printf ("%d:%02d", time/60, time%60);
    }
  }
  else
    new_label = g_strdup (_("N/A"));

  gtk_label_set_text (GTK_LABEL (battstat->percent), new_label);
  g_free (new_label);
}

/* Determine what status icon we ought to be displaying and change the
   status icon to display it if it is different from what we are currently
   showing.
 */
static void
possibly_update_status_icon( ProgressData *battstat, BatteryStatus *info )
{
  GtkIconTheme *theme;
  cairo_surface_t *surface;
  gint icon_size, icon_scale;
  gchar *icon_name;
  int batt_life;

  batt_life = !battstat->red_value_is_time ? info->percent : info->minutes;

  if (batt_life <= battstat->red_val)
  {
    if (info->charging)
      icon_name = g_strdup("battery-caution-charging");
    else
      icon_name = g_strdup("battery-caution");
  }
  else if (batt_life <= battstat->orange_val)
  {
    if (info->charging)
      icon_name = g_strdup("battery-low-charging");
    else
      icon_name = g_strdup("battery-low");
  }
  else if (batt_life <= battstat->yellow_val)
  {
    if (info->charging)
      icon_name = g_strdup("battery-good-charging");
    else
      icon_name = g_strdup("battery-good");
  }
  else if (info->on_ac_power)
  {
    if (info->charging)
      icon_name = g_strdup("battery-full-charging");
    else
      icon_name = g_strdup("battery-full-charged");
  }
  else
  {
    icon_name = g_strdup("battery-full");
  }

  theme = gtk_icon_theme_get_for_screen (gtk_widget_get_screen (GTK_WIDGET (battstat->applet)));

  icon_size = mate_panel_applet_get_size (MATE_PANEL_APPLET (battstat->applet));
  icon_scale = gtk_widget_get_scale_factor (GTK_WIDGET (battstat->applet));

  surface = gtk_icon_theme_load_surface (theme, icon_name, icon_size, icon_scale, NULL, 0, NULL);
  g_free (icon_name);

  gtk_image_set_from_surface (GTK_IMAGE(battstat->status), surface);
  cairo_surface_destroy (surface);
}

/* Gets called as a gtk_timeout once per second.  Checks for updates and
   makes any changes as appropriate.
 */
static gboolean
check_for_updates( gpointer data )
{
  ProgressData *battstat = data;
  BatteryStatus info;
  const char *err;

  if (DEBUG) g_print("check_for_updates()\n");

  if( (err = power_management_getinfo( &info )) )
    battstat_error_dialog( battstat->applet, err );

  if (!event_driven)
  {
    int timeout;

    /* if on AC and not event driven scale back the polls to once every 10 */
    if (info.on_ac_power)
      timeout = 10;
    else
      timeout = 2;

    if (timeout != battstat->timeout)
    {
      battstat->timeout = timeout;

      if (battstat->timeout_id)
        g_source_remove (battstat->timeout_id);

      battstat->timeout_id = g_timeout_add_seconds (battstat->timeout,
                                            check_for_updates,
                                            battstat);
    }
  }


  possibly_update_status_icon( battstat, &info );

  if (!info.on_ac_power &&
      battstat->last_batt_life != 1000 &&
      (
        /* if percentage drops below red_val */
        (!battstat->red_value_is_time &&
         battstat->last_batt_life > battstat->red_val &&
         info.percent <= battstat->red_val) ||
	/* if time drops below red_val */
	(battstat->red_value_is_time &&
	 battstat->last_minutes > battstat->red_val &&
	 info.minutes <= battstat->red_val)
      ) &&
      info.present)
  {
    /* Warn that battery dropped below red_val */
    if(battstat->lowbattnotification)
    {
      battery_low_dialog(battstat, &info);

      if(battstat->beep)
	gdk_display_beep (gdk_display_get_default ());
    }
  }

  if( battstat->last_charging &&
      battstat->last_acline_status &&
      battstat->last_acline_status!=1000 &&
      !info.charging &&
      info.on_ac_power &&
      info.present &&
      info.percent > 99)
  {
    /* Inform that battery now fully charged */
    if(battstat->fullbattnot)
    {
      battery_full_dialog (battstat->applet);

      if (battstat->beep)
	gdk_display_beep (gdk_display_get_default ());
    }
  }

  /* If the warning dialog is displayed and we just got plugged in then
     stop displaying it.
   */
  if( battstat->battery_low_dialog && info.on_ac_power )
    battery_low_dialog_destroy( battstat );

  if( info.on_ac_power != battstat->last_acline_status ||
      info.percent != battstat->last_batt_life ||
      info.minutes != battstat->last_minutes ||
      info.charging != battstat->last_charging )
  {
    /* Update the tooltip */
    update_tooltip( battstat, &info );

    /* If the warning dialog box is currently displayed, update that too. */
    if( battstat->battery_low_dialog != NULL )
      battery_low_update_text( battstat, &info );
  }

  if( (battstat->showtext == APPLET_SHOW_PERCENT &&
       battstat->last_batt_life != info.percent) ||
      (battstat->showtext == APPLET_SHOW_TIME &&
       battstat->last_minutes != info.minutes) ||
       battstat->last_acline_status != info.on_ac_power ||
       battstat->last_present != info.present ||
       battstat->refresh_label ) /* set by properties dialog */
  {
    /* Update the label */
    update_percent_label( battstat, &info );

    /* done */
    battstat->refresh_label = FALSE;
  }

  battstat->last_charging = info.charging;
  battstat->last_batt_life = info.percent;
  battstat->last_minutes = info.minutes;
  battstat->last_acline_status = info.on_ac_power;
  battstat->last_present = info.present;

  return TRUE;
}

/* Gets called when the user removes the applet from the panel.  Clean up
   all instance-specific data and call the global teardown function to
   decrease our applet count (and possibly perform global cleanup)
 */
static void
destroy_applet( GtkWidget *widget, ProgressData *battstat )
{
  if (DEBUG) g_print("destroy_applet()\n");

  if (battstat->prop_win)
    gtk_widget_destroy (GTK_WIDGET (battstat->prop_win));

  if( battstat->battery_low_dialog )
    battery_low_dialog_destroy( battstat );

  if (battstat->timeout_id)
    g_source_remove (battstat->timeout_id);

  g_object_unref( G_OBJECT(battstat->status) );
  g_object_unref( G_OBJECT(battstat->percent) );

  g_free( battstat );

  static_global_teardown (battstat);
}

/* Common function invoked by the 'Help' context menu item and the 'Help'
 * button in the preferences dialog.
 */
void
battstat_show_help( ProgressData *battstat, const char *section )
{
  GError *error = NULL;
  char *uri;

  if (section)
    uri = g_strdup_printf ("help:mate-battstat/%s", section);
  else
    uri = g_strdup ("help:mate-battstat");

  gtk_show_uri_on_window (NULL,
                uri,
                gtk_get_current_event_time (),
                &error);

  g_free (uri);

  if( error )
  {
    char *message;

    message = g_strdup_printf( _("There was an error displaying help: %s"),
                               error->message );
    battstat_error_dialog( battstat->applet, message );
    g_error_free( error );
    g_free( message );
  }
}


/* Called when the user selects the 'help' menu item.
 */
static void
help_cb( GtkAction *action, ProgressData *battstat )
{
  battstat_show_help( battstat, NULL );
}

/* Called when the user selects the 'about' menu item.
 */
static void
about_cb( GtkAction *action, ProgressData *battstat )
{
  const gchar *authors[] = {
    "J\xC3\xB6rgen Pehrson <jp@spektr.eu.org>",
    "Lennart Poettering <lennart@poettering.de> (Linux ACPI support)",
    "Seth Nickell <snickell@stanford.edu> (GNOME2 port)",
    "Davyd Madeley <davyd@madeley.id.au>",
    "Ryan Lortie <desrt@desrt.ca>",
    "Joe Marcus Clarke <marcus@FreeBSD.org> (FreeBSD ACPI support)",
    NULL
   };

  char copyright[] = \
    "Copyright \xc2\xa9 2012-2018 MATE developers\n"
    "Copyright \xc2\xa9 2002-2005 Free Software Foundation and others\n"
    "Copyright \xc2\xa9 2000 The Gnulix Society";

  const gchar *documenters[] = {
    "J\xC3\xB6rgen Pehrson <jp@spektr.eu.org>",
    "Trevor Curtis <tcurtis@somaradio.ca>",
    "Davyd Madeley <davyd@madeley.id.au>",
    NULL
  };

  char *comments = g_strdup_printf ("%s\n\n%s",
		  _("This utility shows the status of your laptop battery."),
		  power_management_using_upower () ?
		    /* true */ _("upower backend enabled.") :
			/* false */ _("Legacy backend enabled."));

  gtk_show_about_dialog( NULL,
    "version",             VERSION,
    "copyright",           copyright,
    "comments",            comments,
    "authors",             authors,
    "documenters",         documenters,
    "translator-credits",  _("translator-credits"),
    "logo-icon-name",      "battery",
    NULL );

  g_free (comments);
}

/* Rotate text on side panels.  Called on initial startup and when the
 * orientation changes (ie: the panel we were on moved or we moved to
 * another panel).
 */
static void
setup_text_orientation( ProgressData *battstat )
{
  if( battstat->orienttype == MATE_PANEL_APPLET_ORIENT_RIGHT )
    gtk_label_set_angle( GTK_LABEL( battstat->percent ), 90 );
  else if( battstat->orienttype == MATE_PANEL_APPLET_ORIENT_LEFT )
    gtk_label_set_angle( GTK_LABEL( battstat->percent ), 270 );
  else
    gtk_label_set_angle( GTK_LABEL( battstat->percent ), 0 );
}


/* This signal is delivered by the panel when the orientation of the applet
   has changed.  This is either because the applet has just been created,
   has just been moved to a new panel or the panel that the applet was on
   has changed orientation.
*/
static void
change_orient (MatePanelApplet       *applet,
	       MatePanelAppletOrient  orient,
	       ProgressData      *battstat)
{
  if (DEBUG) g_print("change_orient()\n");

  /* Ignore the update if we already know. */
  if( orient != battstat->orienttype )
  {
    battstat->orienttype = orient;

    /* The applet changing orientation very likely involves the layout
       being changed to better fit the new shape of the panel.
    */
    setup_text_orientation( battstat );
    reconfigure_layout( battstat );
  }
}

/* This is delivered when our size has changed.  This happens when the applet
   is just created or if the size of the panel has changed.
*/
static void
size_allocate( MatePanelApplet *applet, GtkAllocation *allocation,
               ProgressData *battstat)
{
  if (DEBUG) g_print("applet_change_pixel_size()\n");

  /* Ignore the update if we already know. */
  if( battstat->width == allocation->width &&
      battstat->height == allocation->height )
    return;

  battstat->width = allocation->width;
  battstat->height = allocation->height;

  /* The applet changing size could result in the layout changing. */
  reconfigure_layout( battstat );
}

/* Get our settings out of gsettings.
 */
static void
load_preferences(ProgressData *battstat)
{
  GSettings *settings = battstat->settings;

  if (DEBUG) g_print("load_preferences()\n");

  battstat->red_val = g_settings_get_int (settings, "red-value");
  battstat->red_val = CLAMP (battstat->red_val, 0, 100);
  battstat->red_value_is_time = g_settings_get_boolean (settings, "red-value-is-time");

  /* automatically calculate orangle and yellow values from the red value */
  battstat->orange_val = battstat->red_val * ORANGE_MULTIPLIER;
  battstat->orange_val = CLAMP (battstat->orange_val, 0, 100);

  battstat->yellow_val = battstat->red_val * YELLOW_MULTIPLIER;
  battstat->yellow_val = CLAMP (battstat->yellow_val, 0, 100);

  battstat->lowbattnotification = g_settings_get_boolean (settings, "low-battery-notification");
  battstat->fullbattnot = g_settings_get_boolean (settings, "full-battery-notification");
  battstat->beep = g_settings_get_boolean (settings, "beep");
  battstat->showtext = g_settings_get_int (settings, "show-text");
}

/* Convenience function to attach a child widget to a GtkGrid in the
   position indicated by 'loc'.  This is very special-purpose for 3x3
   gridss and only supports positions that are used in this applet.
 */
static void
grid_layout_attach (GtkGrid *grid, LayoutLocation loc, GtkWidget *child)
{
  switch( loc )
  {
    case LAYOUT_LONG:
      gtk_grid_attach (grid, child, 1, 0, 1, 2);
      break;

    case LAYOUT_TOPLEFT:
      gtk_grid_attach (grid, child, 0, 0, 1, 1);
      break;

    case LAYOUT_TOP:
      gtk_grid_attach (grid, child, 1, 0, 1, 1);
      break;

    case LAYOUT_LEFT:
      gtk_grid_attach (grid, child, 0, 1, 1, 1);
      break;

    case LAYOUT_CENTRE:
      gtk_grid_attach (grid, child, 1, 1, 1, 1);
      break;

    case LAYOUT_RIGHT:
      gtk_grid_attach (grid, child, 2, 1, 1, 1);
      break;

    case LAYOUT_BOTTOM:
      gtk_grid_attach (grid, child, 1, 2, 1, 1);
      break;

    default:
      break;
  }
}

/* The layout has (maybe) changed.  Calculate what layout we ought to be
   using and update some things if anything has changed.  This is called
   from size/orientation change callbacks and from the preferences dialog
   when elements get added or removed.
 */
void
reconfigure_layout( ProgressData *battstat )
{
  LayoutConfiguration c;

  /* Default to no elements being displayed. */
  c.status = c.text = LAYOUT_NONE;

  switch( battstat->orienttype )
  {
    case MATE_PANEL_APPLET_ORIENT_UP:
    case MATE_PANEL_APPLET_ORIENT_DOWN:
      /* Stack horizontally for top and bottom panels. */
      c.status = LAYOUT_LEFT;
      if( battstat->showtext )
	c.text = LAYOUT_RIGHT;
      break;

    case MATE_PANEL_APPLET_ORIENT_LEFT:
    case MATE_PANEL_APPLET_ORIENT_RIGHT:
      /* Stack vertically for left and right panels. */
      c.status = LAYOUT_TOP;
      if( battstat->showtext )
	c.text = LAYOUT_BOTTOM;
      break;
  }

  if( memcmp( &c, &battstat->layout, sizeof (LayoutConfiguration) ) )
  {
    /* Something in the layout has changed.  Rebuild. */

    /* Start by removing any elements in the grid from the grid. */
    if( battstat->layout.text )
      gtk_container_remove( GTK_CONTAINER( battstat->grid ),
                            battstat->percent );
    if( battstat->layout.status )
      gtk_container_remove( GTK_CONTAINER( battstat->grid ),
                            battstat->status );

    /* Attach the elements to their new locations. */
    grid_layout_attach( GTK_GRID(battstat->grid),
                         c.status, battstat->status );
    grid_layout_attach( GTK_GRID(battstat->grid),
                         c.text, battstat->percent );

    gtk_widget_show_all( battstat->applet );
  }

  battstat->layout = c;

  /* Check for generic updates. This is required, for example, to make sure
     the text label is immediately updated to show the time remaining or
     percentage.
  */
  check_for_updates( battstat );
}

/* Allocate the widgets for the applet and connect our signals.
 */
static gint
create_layout(ProgressData *battstat)
{
  if (DEBUG) g_print("create_layout()\n");

  /* Have our background automatically painted. */
  mate_panel_applet_set_background_widget( MATE_PANEL_APPLET( battstat->applet ),
                                      GTK_WIDGET( battstat->applet ) );

  /* Allocate the four widgets that we need. */
  battstat->grid = gtk_grid_new ();
  battstat->percent = gtk_label_new( "" );
  battstat->status = gtk_image_new();

  /* When you first get a pointer to a newly created GtkWidget it has one
     'floating' reference.  When you first add this widget to a container
     the container adds a real reference and removes the floating reference
     if one exists.  Since we insert/remove these widgets from the table
     when our layout is reconfigured, we need to keep our own 'real'
     reference to each widget.  This adds a real reference to each widget
     and "sinks" the floating reference.
  */
  g_object_ref( battstat->status );
  g_object_ref( battstat->percent );
  g_object_ref_sink( G_OBJECT( battstat->status ) );
  g_object_ref_sink( G_OBJECT( battstat->percent ) );

  /* Let reconfigure_layout know that the grid is currently empty. */
  battstat->layout.status = LAYOUT_NONE;
  battstat->layout.text = LAYOUT_NONE;

  /* Put the grid directly inside the applet and show everything. */
  gtk_widget_set_halign (battstat->grid, GTK_ALIGN_CENTER);
  gtk_widget_set_valign (battstat->grid, GTK_ALIGN_CENTER);
  gtk_container_add (GTK_CONTAINER (battstat->applet), battstat->grid);
  gtk_widget_show_all (battstat->applet);

  /* Attach all sorts of signals to the applet. */
  g_signal_connect(G_OBJECT(battstat->applet),
                   "destroy",
                   G_CALLBACK(destroy_applet),
                   battstat);

  g_signal_connect (battstat->applet,
		    "change_orient",
		    G_CALLBACK(change_orient),
		    battstat);

  g_signal_connect (battstat->applet,
		    "size_allocate",
   		    G_CALLBACK (size_allocate),
		    battstat);

  return FALSE;
}

/* Called by the factory to fill in the fields for the applet.
 */
static gboolean
battstat_applet_fill (MatePanelApplet *applet)
{
  ProgressData *battstat;
  AtkObject *atk_widget;
  GtkActionGroup *action_group;
  gchar *ui_path;
  const char *err;

  if (DEBUG) g_print("main()\n");

  g_set_application_name (_("Battery Charge Monitor"));

  gtk_window_set_default_icon_name ("battery");

  mate_panel_applet_set_flags (applet, MATE_PANEL_APPLET_EXPAND_MINOR);

  battstat = g_new0 (ProgressData, 1);
  battstat->settings = mate_panel_applet_settings_new (applet, BATTSTAT_SCHEMA);

  /* Some starting values... */
  battstat->applet = GTK_WIDGET (applet);
  battstat->refresh_label = TRUE;
  battstat->last_batt_life = 1000;
  battstat->last_acline_status = 1000;
  battstat->last_charging = 1000;
  battstat->orienttype = mate_panel_applet_get_orient (applet);
  battstat->battery_low_dialog = NULL;
  battstat->battery_low_label = NULL;
  battstat->timeout = -1;
  battstat->timeout_id = 0;

  /* The first received size_allocate event will cause a reconfigure. */
  battstat->height = -1;
  battstat->width = -1;

  load_preferences (battstat);
  create_layout (battstat);
  setup_text_orientation( battstat );

  action_group = gtk_action_group_new ("Battstat Applet Actions");
  gtk_action_group_set_translation_domain (action_group, GETTEXT_PACKAGE);
  gtk_action_group_add_actions (action_group,
				battstat_menu_actions,
				G_N_ELEMENTS (battstat_menu_actions),
				battstat);
  ui_path = g_build_filename (BATTSTAT_MENU_UI_DIR, "battstat-applet-menu.xml", NULL);
  mate_panel_applet_setup_menu_from_file (MATE_PANEL_APPLET (battstat->applet),
				     ui_path, action_group);
  g_free (ui_path);

  if (mate_panel_applet_get_locked_down (MATE_PANEL_APPLET (battstat->applet))) {
	  GtkAction *action;

	  action = gtk_action_group_get_action (action_group, "BattstatProperties");
	  gtk_action_set_visible (action, FALSE);
  }
  g_object_unref (action_group);

  atk_widget = gtk_widget_get_accessible (battstat->applet);
  if (GTK_IS_ACCESSIBLE (atk_widget)) {
	  atk_object_set_name (atk_widget, _("Battery Charge Monitor"));
	  atk_object_set_description(atk_widget, _("Monitor a laptop's remaining power"));
  }

  if ((err = static_global_initialisation (battstat)))
    battstat_error_dialog (GTK_WIDGET (applet), err);

  return TRUE;
}

/* Boilerplate... */
static gboolean
battstat_applet_factory (MatePanelApplet *applet,
			 const gchar          *iid,
			 gpointer              data)
{
  gboolean retval = FALSE;

  if (!strcmp (iid, "BattstatApplet"))
    retval = battstat_applet_fill (applet);

  return retval;
}


MATE_PANEL_APPLET_OUT_PROCESS_FACTORY ("BattstatAppletFactory",
				  PANEL_TYPE_APPLET,
				  "battstat",
				  battstat_applet_factory,
				  NULL)