aboutsummaryrefslogtreecommitdiff
path: root/src/sound-state-manager.c
blob: ac03addabdcde1b6df8f84338bd51c61d7c85ab0 (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
/*
Copyright 2011 Canonical Ltd.

Authors:
    Conor Curran <conor.curran@canonical.com>

This program is free software: you can redistribute it and/or modify it
under the terms of the GNU General Public License version 3, as published
by the Free Software Foundation.

This program is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranties of
MERCHANTABILITY, SATISFACTORY QUALITY, 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, see <http://www.gnu.org/licenses/>.
*/

#include <libindicator/indicator-image-helper.h>
#include <libnotify/notify.h>

#include "config.h"

#include "sound-state-manager.h"
#include "dbus-shared-names.h"
#include "sound-state.h"

typedef struct _SoundStateManagerPrivate SoundStateManagerPrivate;

struct _SoundStateManagerPrivate
{
  GDBusProxy* dbus_proxy;  
  GHashTable* volume_states;  
  GList* blocked_animation_list;
  SoundState current_state;
  GtkImage* speaker_image;
  NotifyNotification* notification;  
  GSettings *settings_manager;  
};

#define SOUND_STATE_MANAGER_GET_PRIVATE(o) (G_TYPE_INSTANCE_GET_PRIVATE ((o), SOUND_TYPE_STATE_MANAGER, SoundStateManagerPrivate))
G_DEFINE_TYPE (SoundStateManager, sound_state_manager, G_TYPE_OBJECT);

static GtkIconSize design_team_size;
static gint blocked_id;
static gint animation_id;
static GList* blocked_iter = NULL;
static gboolean can_animate = FALSE;

//Notifications
static void sound_state_manager_notification_init (SoundStateManager* self);

//Animation/State related
static void sound_state_manager_prepare_blocked_animation (SoundStateManager* self);
static gboolean sound_state_manager_start_animation (gpointer user_data);
static gboolean sound_state_manager_fade_back_to_mute_image (gpointer user_data);
static void sound_state_manager_reset_mute_blocking_animation (SoundStateManager* self);
static void sound_state_manager_free_the_animation_list (SoundStateManager* self);
static void sound_state_manager_prepare_state_image_names (SoundStateManager* self);
static void sound_state_signal_cb ( GDBusProxy* proxy,
                                    gchar* sender_name,
                                    gchar* signal_name,
                                    GVariant* parameters,
                                    gpointer user_data );
static gboolean sound_state_manager_can_proceed_with_blocking_animation (SoundStateManager* self);


static void
sound_state_manager_init (SoundStateManager* self)
{
  SoundStateManagerPrivate* priv = SOUND_STATE_MANAGER_GET_PRIVATE(self);

  priv->dbus_proxy = NULL;
  priv->volume_states = NULL;
  priv->speaker_image = NULL;
  priv->blocked_animation_list = NULL;
  priv->notification = NULL;  
  priv->settings_manager = NULL;

  priv->settings_manager = g_settings_new("com.canonical.indicators.sound");

  sound_state_manager_prepare_state_image_names (self);
  sound_state_manager_prepare_blocked_animation (self);

  priv->current_state = UNAVAILABLE;
  priv->speaker_image = indicator_image_helper (g_hash_table_lookup (priv->volume_states,
                                                                     GINT_TO_POINTER(priv->current_state)));
}

static void
sound_state_manager_finalize (GObject *object)
{
	/* TODO: Add deinitalization code here */

	G_OBJECT_CLASS (sound_state_manager_parent_class)->finalize (object);
}

static void
sound_state_manager_dispose (GObject *object)
{
  SoundStateManager* self = SOUND_STATE_MANAGER (object);
  SoundStateManagerPrivate* priv = SOUND_STATE_MANAGER_GET_PRIVATE(self);
  
  g_hash_table_destroy (priv->volume_states);

  sound_state_manager_free_the_animation_list (self);

  if (priv->notification) {
    notify_uninit();
  }

  g_object_unref(priv->settings_manager);
  
  G_OBJECT_CLASS (sound_state_manager_parent_class)->dispose (object);
}


static void
sound_state_manager_class_init (SoundStateManagerClass *klass)
{
	GObjectClass* object_class = G_OBJECT_CLASS (klass);

	object_class->finalize = sound_state_manager_finalize;
  object_class->dispose = sound_state_manager_dispose;

  g_type_class_add_private (klass, sizeof (SoundStateManagerPrivate));
  
  design_team_size = gtk_icon_size_register("design-team-size", 22, 22);  
}

static void
sound_state_manager_notification_init (SoundStateManager* self)
{
  static gboolean initialized = FALSE;

  /* one-time lazy initialization */
  if (initialized)
    return;
  initialized = TRUE;

  SoundStateManagerPrivate* priv = SOUND_STATE_MANAGER_GET_PRIVATE(self);

  if (!notify_init(PACKAGE_NAME))
    return;

  GList* caps = notify_get_server_caps();
  gboolean has_notify_osd = FALSE;

  if (caps) {
    if (g_list_find_custom(caps, "x-canonical-private-synchronous",
                           (GCompareFunc) g_strcmp0)) {
      has_notify_osd = TRUE;
    }
    g_list_foreach(caps, (GFunc) g_free, NULL);
    g_list_free(caps);
  }

  if (has_notify_osd) {
    priv->notification = notify_notification_new(PACKAGE_NAME, NULL, NULL);
    notify_notification_set_hint_string(priv->notification,
                                        "x-canonical-private-synchronous", PACKAGE_NAME);
  }
}

void
sound_state_manager_show_notification (SoundStateManager *self,
                                       double value)
{
  SoundStateManagerPrivate* priv = SOUND_STATE_MANAGER_GET_PRIVATE(self);

  sound_state_manager_notification_init (self);
  
  if (priv->notification == NULL || 
      g_settings_get_boolean (priv->settings_manager, "show-notify-osd-on-scroll") == FALSE){
    return;
  }

  char *icon;
  const int notify_value = CLAMP((int)value, -1, 101);
  
  SoundState state = sound_state_get_from_volume ((int)value);
      
  if (state == ZERO_LEVEL) {
    // Not available for all the themes
    icon = "notification-audio-volume-off";
  } else if (state == LOW_LEVEL) {
    icon = "notification-audio-volume-low";
  } else if (state == MEDIUM_LEVEL) {
    icon = "notification-audio-volume-medium";
  } else if (state == HIGH_LEVEL) {
    icon = "notification-audio-volume-high";
  } else {
    icon = "notification-audio-volume-muted";
  }

  notify_notification_update(priv->notification, PACKAGE_NAME, NULL, icon);
  notify_notification_set_hint_int32(priv->notification, "value", notify_value);
  notify_notification_show(priv->notification, NULL);
}


/*
Prepare states versus images names hash.
*/
static void
sound_state_manager_prepare_state_image_names (SoundStateManager* self)
{
  SoundStateManagerPrivate* priv = SOUND_STATE_MANAGER_GET_PRIVATE(self);
  priv->volume_states = g_hash_table_new_full (g_direct_hash, g_direct_equal, NULL, g_free);
  
  g_hash_table_insert (priv->volume_states, GINT_TO_POINTER(MUTED), g_strdup("audio-volume-muted-panel"));
  g_hash_table_insert (priv->volume_states, GINT_TO_POINTER(ZERO_LEVEL), g_strdup("audio-volume-low-zero-panel"));
  g_hash_table_insert (priv->volume_states, GINT_TO_POINTER(LOW_LEVEL), g_strdup("audio-volume-low-panel"));
  g_hash_table_insert (priv->volume_states, GINT_TO_POINTER(MEDIUM_LEVEL), g_strdup("audio-volume-medium-panel"));
  g_hash_table_insert (priv->volume_states, GINT_TO_POINTER(HIGH_LEVEL), g_strdup("audio-volume-high-panel"));
  g_hash_table_insert (priv->volume_states, GINT_TO_POINTER(BLOCKED), g_strdup("audio-volume-muted-blocking-panel"));
  g_hash_table_insert (priv->volume_states, GINT_TO_POINTER(UNAVAILABLE), g_strdup("audio-output-none-panel"));
}

/*
prepare_blocked_animation:
Prepares the array of images to be used in the blocked animation.
Only called at startup.
*/
static void
sound_state_manager_prepare_blocked_animation (SoundStateManager* self)
{
  SoundStateManagerPrivate* priv = SOUND_STATE_MANAGER_GET_PRIVATE(self);
  
  gchar* blocked_name = g_hash_table_lookup(priv->volume_states,
                                            GINT_TO_POINTER(BLOCKED));
  gchar* muted_name = g_hash_table_lookup(priv->volume_states,
                                          GINT_TO_POINTER(MUTED));

  GtkImage* temp_image = indicator_image_helper(muted_name);
  GdkPixbuf* mute_buf = gtk_image_get_pixbuf(temp_image);

  temp_image = indicator_image_helper(blocked_name);
  GdkPixbuf* blocked_buf = gtk_image_get_pixbuf(temp_image);

  if (mute_buf == NULL || blocked_buf == NULL) {
    //g_debug("Don bother with the animation, the theme aint got the goods !");
    return;
  }

  int i;

  // sample 51 snapshots - range : 0-256
  for (i = 0; i < 51; i++) {
    gdk_pixbuf_composite(mute_buf, blocked_buf, 0, 0,
                         gdk_pixbuf_get_width(mute_buf),
                         gdk_pixbuf_get_height(mute_buf),
                         0, 0, 1, 1, GDK_INTERP_BILINEAR, MIN(255, i * 5));
    priv->blocked_animation_list = g_list_append(priv->blocked_animation_list,
                                                 gdk_pixbuf_copy(blocked_buf));
  }
  can_animate = TRUE;
  g_object_ref_sink(mute_buf);
  g_object_unref(mute_buf);
  g_object_ref_sink(blocked_buf);
  g_object_unref(blocked_buf);
}


GtkImage*
sound_state_manager_get_current_icon (SoundStateManager* self)
{
  SoundStateManagerPrivate* priv = SOUND_STATE_MANAGER_GET_PRIVATE(self);
  return priv->speaker_image;  
}

SoundState
sound_state_manager_get_current_state (SoundStateManager* self)
{
  SoundStateManagerPrivate* priv = SOUND_STATE_MANAGER_GET_PRIVATE(self);
  return priv->current_state;
}

/**
 * sound_state_manager_connect_to_dbus:
 * @returns: void
 * When ready the indicator-sound calls this method to enable state communication 
 * between the indicator and the service. 
 **/
void
sound_state_manager_connect_to_dbus (SoundStateManager* self, GDBusProxy* proxy)
{
  SoundStateManagerPrivate* priv = SOUND_STATE_MANAGER_GET_PRIVATE(self);
  priv->dbus_proxy = proxy;
  g_signal_connect (priv->dbus_proxy, "g-signal",
                    G_CALLBACK (sound_state_signal_cb), self);

  g_dbus_proxy_call ( priv->dbus_proxy,
                      "GetSoundState",
                      NULL,
		                  G_DBUS_CALL_FLAGS_NONE,
                      -1,
                      NULL,
                      (GAsyncReadyCallback)sound_state_manager_get_state_cb,
                      self);  
}

void
sound_state_manager_get_state_cb (GObject *object,
                                  GAsyncResult *res,
                                  gpointer user_data)
{
  g_return_if_fail (SOUND_IS_STATE_MANAGER (user_data));
  SoundStateManager* self = SOUND_STATE_MANAGER (user_data);
  SoundStateManagerPrivate* priv = SOUND_STATE_MANAGER_GET_PRIVATE(self);
  
  GVariant *result, *value;
  GError *error = NULL;
  result = g_dbus_proxy_call_finish ( priv->dbus_proxy,
                                      res,
                                      &error );

  if (error != NULL) {
    g_warning("get_sound_state call failed: %s", error->message);
    g_error_free(error);
    return;
  }

  value = g_variant_get_child_value(result, 0);
  priv->current_state = (SoundState)g_variant_get_int32(value);

  gchar* image_name = g_hash_table_lookup (priv->volume_states, 
                                           GINT_TO_POINTER(priv->current_state) );
  indicator_image_helper_update (priv->speaker_image, image_name);
  
  g_variant_unref(value);
  g_variant_unref(result);
}

void 
sound_state_manager_deal_with_disconnect (SoundStateManager* self)
{
  SoundStateManagerPrivate* priv = SOUND_STATE_MANAGER_GET_PRIVATE(self);
  priv->current_state = UNAVAILABLE;

  gchar* image_name = g_hash_table_lookup (priv->volume_states, 
                                           GINT_TO_POINTER(priv->current_state) );
  indicator_image_helper_update (priv->speaker_image, image_name);
}

static void 
sound_state_signal_cb ( GDBusProxy* proxy,
                        gchar* sender_name,
                        gchar* signal_name,
                        GVariant* parameters,
                        gpointer user_data)
{
  //g_debug ( "!!! sound state manager signal_cb" );

  g_return_if_fail (SOUND_IS_STATE_MANAGER (user_data));
  SoundStateManager* self = SOUND_STATE_MANAGER (user_data);
  SoundStateManagerPrivate* priv = SOUND_STATE_MANAGER_GET_PRIVATE(self);

  g_variant_ref (parameters);
  GVariant *value = g_variant_get_child_value (parameters, 0);
  gint update = g_variant_get_int32 (value);

  //g_debug ( "!!! signal_cb with value %i", update);

  priv->current_state = (SoundState)update;

  g_variant_unref (parameters);

  if (g_strcmp0(signal_name, INDICATOR_SOUND_SIGNAL_STATE_UPDATE) == 0){

    gchar* image_name = g_hash_table_lookup (priv->volume_states, 
                                             GINT_TO_POINTER(priv->current_state) );
    if (priv->current_state == BLOCKED &&
        sound_state_manager_can_proceed_with_blocking_animation (self) == TRUE) {
      blocked_id = g_timeout_add_seconds (4,
                                          sound_state_manager_start_animation,
                                          self);
      indicator_image_helper_update (priv->speaker_image, image_name);
    }
    else{
      indicator_image_helper_update (priv->speaker_image, image_name); 
    }
  }
  else {
    g_warning ("sorry don't know what signal this is - %s", signal_name);
  }
}

void
sound_state_manager_style_changed_cb (GtkWidget *widget,
                                      GtkStyle  *previous_style,
                                      gpointer user_data)
{
  g_debug("Just caught a style change event");
  g_return_if_fail (SOUND_IS_STATE_MANAGER (user_data));
  SoundStateManager* self = SOUND_STATE_MANAGER (user_data);
  sound_state_manager_reset_mute_blocking_animation (self);
  sound_state_manager_free_the_animation_list (self);
  sound_state_manager_prepare_blocked_animation (self);
}

static void
sound_state_manager_reset_mute_blocking_animation (SoundStateManager* self)
{
  if (animation_id != 0) {
    //g_debug("about to remove the animation_id callback from the mainloop!!**");
    g_source_remove(animation_id);
    animation_id = 0;
  }
  if (blocked_id != 0) {
    //g_debug("about to remove the blocked_id callback from the mainloop!!**");
    g_source_remove(blocked_id);
    blocked_id = 0;
  }
}

static void
sound_state_manager_free_the_animation_list (SoundStateManager* self)
{
  SoundStateManagerPrivate* priv = SOUND_STATE_MANAGER_GET_PRIVATE(self);
  
  if (priv->blocked_animation_list != NULL) {
    g_list_foreach (priv->blocked_animation_list, (GFunc)g_object_unref, NULL);
    g_list_free (priv->blocked_animation_list);
    priv->blocked_animation_list = NULL;
  }
}


static gboolean
sound_state_manager_start_animation (gpointer userdata)
{
  g_return_val_if_fail (SOUND_IS_STATE_MANAGER (userdata), FALSE);
  SoundStateManager* self = SOUND_STATE_MANAGER (userdata);
  SoundStateManagerPrivate* priv = SOUND_STATE_MANAGER_GET_PRIVATE(self);
  
  blocked_iter = priv->blocked_animation_list;
  blocked_id = 0;
  animation_id = g_timeout_add (50,
                                sound_state_manager_fade_back_to_mute_image,
                                self);
  return FALSE;
}

static gboolean
sound_state_manager_fade_back_to_mute_image (gpointer user_data)
{
  g_return_val_if_fail (SOUND_IS_STATE_MANAGER (user_data), FALSE);
  SoundStateManager* self = SOUND_STATE_MANAGER (user_data);
  SoundStateManagerPrivate* priv = SOUND_STATE_MANAGER_GET_PRIVATE (self);

  if (blocked_iter != NULL) {
    gtk_image_set_from_pixbuf (priv->speaker_image, blocked_iter->data);
    blocked_iter = blocked_iter->next;
    return TRUE;
  } else {
    animation_id = 0;
    //g_debug("exit from animation now\n");
    g_dbus_proxy_call ( priv->dbus_proxy,
                        "GetSoundState",
                        NULL,
		                    G_DBUS_CALL_FLAGS_NONE,
                        -1,
                        NULL,
                        (GAsyncReadyCallback)sound_state_manager_get_state_cb,
                        self);  
   
    return FALSE;
  }
}


// Simple static helper to determine if the coast is clear to animate
static
gboolean sound_state_manager_can_proceed_with_blocking_animation (SoundStateManager* self)
{
  return (can_animate && blocked_id == 0 && animation_id == 0 );
}