chiark / gitweb /
Play tracks from popup in new tracks list. The same code would work
[disorder] / disobedience / queue.c
1 /*
2  * This file is part of DisOrder
3  * Copyright (C) 2006-2008 Richard Kettlewell
4  *
5  * This program is free software; you can redistribute it and/or modify
6  * it under the terms of the GNU General Public License as published by
7  * the Free Software Foundation; either version 2 of the License, or
8  * (at your option) any later version.
9  *
10  * This program is distributed in the hope that it will be useful, but
11  * WITHOUT ANY WARRANTY; without even the implied warranty of
12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
13  * General Public License for more details.
14  *
15  * You should have received a copy of the GNU General Public License
16  * along with this program; if not, write to the Free Software
17  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
18  * USA
19  */
20 #include "disobedience.h"
21 #include "queue-generic.h"
22
23 /** @brief The actual queue */
24 static struct queue_entry *actual_queue;
25 static struct queue_entry *actual_playing_track;
26
27 /** @brief The playing track */
28 struct queue_entry *playing_track;
29
30 /** @brief When we last got the playing track */
31 time_t last_playing;
32
33 /** @brief Called when either the actual queue or the playing track change */
34 static void queue_playing_changed(void) {
35   struct queue_entry *q = xmalloc(sizeof *q);
36
37   if(actual_playing_track) {
38     *q = *actual_playing_track;
39     q->next = actual_queue;
40     playing_track = q;
41   } else {
42     playing_track = NULL;
43     q = actual_queue;
44   }
45   time(&last_playing);          /* for column_length() */
46   ql_new_queue(&ql_queue, q);
47   /* Tell anyone who cares */
48   event_raise("queue-list-changed", q);
49   event_raise("playing-track-changed", q);
50 }
51
52 /** @brief Update the queue itself */
53 static void queue_completed(void attribute((unused)) *v,
54                             const char *error,
55                             struct queue_entry *q) {
56   if(error) {
57     popup_protocol_error(0, error);
58     return;
59   }
60   actual_queue = q;
61   queue_playing_changed();
62 }
63
64 /** @brief Update the playing track */
65 static void playing_completed(void attribute((unused)) *v,
66                               const char *error,
67                               struct queue_entry *q) {
68   if(error) {
69     popup_protocol_error(0, error);
70     return;
71   }
72   actual_playing_track = q;
73   queue_playing_changed();
74 }
75
76 /** @brief Schedule an update to the queue
77  *
78  * Called whenever a track is added to it or removed from it.
79  */
80 static void queue_changed(const char attribute((unused)) *event,
81                            void  attribute((unused)) *eventdata,
82                            void  attribute((unused)) *callbackdata) {
83   D(("queue_changed"));
84   gtk_label_set_text(GTK_LABEL(report_label), "updating queue");
85   disorder_eclient_queue(client, queue_completed, 0);
86 }
87
88 /** @brief Schedule an update to the playing track
89  *
90  * Called whenever it changes
91  */
92 static void playing_changed(const char attribute((unused)) *event,
93                             void  attribute((unused)) *eventdata,
94                             void  attribute((unused)) *callbackdata) {
95   D(("playing_changed"));
96   gtk_label_set_text(GTK_LABEL(report_label), "updating playing track");
97   disorder_eclient_playing(client, playing_completed, 0);
98 }
99
100 /** @brief Called regularly
101  *
102  * Updates the played-so-far field
103  */
104 static gboolean playing_periodic(gpointer attribute((unused)) data) {
105   /* If there's a track playing, update its row */
106   if(playing_track)
107     ql_update_row(playing_track, 0);
108   return TRUE;
109 }
110
111 /** @brief Called at startup */
112 static void queue_init(void) {
113   /* Arrange a callback whenever the playing state changes */ 
114   event_register("playing-changed", playing_changed, 0);
115   /* We reget both playing track and queue at pause/resume so that start times
116    * can be computed correctly */
117   event_register("pause-changed", playing_changed, 0);
118   event_register("pause-changed", queue_changed, 0);
119   /* Reget the queue whenever it changes */
120   event_register("queue-changed", queue_changed, 0);
121   /* ...and once a second anyway */
122   g_timeout_add(1000/*ms*/, playing_periodic, 0);
123 }
124
125 /** @brief Columns for the queue */
126 static const struct queue_column queue_columns[] = {
127   { "When",   column_when,     0,        COL_RIGHT },
128   { "Who",    column_who,      0,        0 },
129   { "Artist", column_namepart, "artist", COL_EXPAND|COL_ELLIPSIZE },
130   { "Album",  column_namepart, "album",  COL_EXPAND|COL_ELLIPSIZE },
131   { "Title",  column_namepart, "title",  COL_EXPAND|COL_ELLIPSIZE },
132   { "Length", column_length,   0,        COL_RIGHT }
133 };
134
135 /** @brief Pop-up menu for queue */
136 static struct queue_menuitem queue_menuitems[] = {
137   { "Track properties", ql_properties_activate, ql_properties_sensitive, 0, 0 },
138   { "Select all tracks", ql_selectall_activate, ql_selectall_sensitive, 0, 0 },
139   { "Deselect all tracks", ql_selectnone_activate, ql_selectnone_sensitive, 0, 0 },
140   { "Scratch playing track", ql_scratch_activate, ql_scratch_sensitive, 0, 0 },
141   { "Remove track from queue", ql_remove_activate, ql_remove_sensitive, 0, 0 },
142 };
143
144 struct queuelike ql_queue = {
145   .name = "queue",
146   .init = queue_init,
147   .columns = queue_columns,
148   .ncolumns = sizeof queue_columns / sizeof *queue_columns,
149   .menuitems = queue_menuitems,
150   .nmenuitems = sizeof queue_menuitems / sizeof *queue_menuitems,
151 };
152
153 GtkWidget *queue_widget(void) {
154   return init_queuelike(&ql_queue);
155 }
156
157 /** @brief Return nonzero if @p track is in the queue */
158 int queued(const char *track) {
159   struct queue_entry *q;
160
161   D(("queued %s", track));
162   for(q = ql_queue.q; q; q = q->next)
163     if(!strcmp(q->track, track))
164       return 1;
165   return 0;
166 }
167
168 /*
169 Local Variables:
170 c-basic-offset:2
171 comment-column:40
172 fill-column:79
173 indent-tabs-mode:nil
174 End:
175 */