1 /* ncmpc (Ncurses MPD Client)
2 * (c) 2004-2009 The Music Player Daemon Project
3 * Project homepage: http://musicpd.org
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.
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
15 * You should have received a copy of the GNU General Public License along
16 * with this program; if not, write to the Free Software Foundation, Inc.,
17 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
18 */
20 #include "screen_song.h"
21 #include "screen_interface.h"
22 #include "screen_file.h"
23 #include "screen_lyrics.h"
24 #include "screen_find.h"
25 #include "i18n.h"
26 #include "screen.h"
27 #include "charset.h"
28 #include "utils.h"
29 #include "mpdclient.h"
31 #include <mpd/client.h>
33 #include <glib/gprintf.h>
34 #include <assert.h>
35 #include <string.h>
37 static struct list_window *lw;
39 static struct mpd_song *next_song;
41 static struct {
42 struct mpd_song *selected_song;
43 struct mpd_song *played_song;
44 GPtrArray *lines;
45 } current;
47 static void
48 screen_song_clear(void)
49 {
50 for (guint i = 0; i < current.lines->len; ++i)
51 g_free(g_ptr_array_index(current.lines, i));
53 g_ptr_array_set_size(current.lines, 0);
55 if (current.selected_song != NULL) {
56 mpd_song_free(current.selected_song);
57 current.selected_song = NULL;
58 }
59 if (current.played_song != NULL) {
60 mpd_song_free(current.played_song);
61 current.played_song = NULL;
62 }
63 }
65 static void
66 screen_song_paint(void);
68 /**
69 * Repaint and update the screen.
70 */
71 static void
72 screen_song_repaint(void)
73 {
74 screen_song_paint();
75 wrefresh(lw->w);
76 }
78 static const char *
79 screen_song_list_callback(unsigned idx, G_GNUC_UNUSED bool *highlight,
80 G_GNUC_UNUSED char** sc, G_GNUC_UNUSED void *data)
81 {
82 static char buffer[256];
83 char *value;
85 if (idx >= current.lines->len)
86 return NULL;
88 value = utf8_to_locale(g_ptr_array_index(current.lines, idx));
89 g_strlcpy(buffer, value, sizeof(buffer));
90 g_free(value);
92 return buffer;
93 }
96 static void
97 screen_song_init(WINDOW *w, int cols, int rows)
98 {
99 /* We will need at least 10 lines, so this saves 10 reallocations :) */
100 current.lines = g_ptr_array_sized_new(10);
101 lw = list_window_init(w, cols, rows);
102 lw->hide_cursor = true;
103 }
105 static void
106 screen_song_exit(void)
107 {
108 list_window_free(lw);
110 screen_song_clear();
112 g_ptr_array_free(current.lines, TRUE);
113 current.lines = NULL;
114 }
116 static void
117 screen_song_resize(int cols, int rows)
118 {
119 lw->cols = cols;
120 lw->rows = rows;
121 }
123 static const char *
124 screen_song_title(G_GNUC_UNUSED char *str, G_GNUC_UNUSED size_t size)
125 {
126 return _("Song viewer");
127 }
129 static void
130 screen_song_paint(void)
131 {
132 list_window_paint(lw, screen_song_list_callback, NULL);
133 }
135 /* Appends a line with a fixed width for the label column
136 * Handles NULL strings gracefully */
137 static void
138 screen_song_append(const char *label, const char *value, unsigned label_col)
139 {
140 int value_col, linebreaks, entry_size, label_size;
141 int i, k;
142 gchar *entry, *entry_iter;
143 const gchar *value_iter;
145 assert(label != NULL);
146 assert(g_utf8_validate(label, -1, NULL));
148 if (value != NULL) {
149 assert(g_utf8_validate(value, -1, NULL));
150 /* +2 for ': ' */
151 label_col += 2;
152 value_col = lw->cols - label_col;
153 /* calculate the number of required linebreaks */
154 linebreaks = (utf8_width(value) - 1) / value_col + 1;
155 value_iter = value;
156 label_size = strlen(label) + label_col - utf8_width(label);
157 entry_size = label_size + strlen(value) + 2;
159 for (i = 0; i < linebreaks; ++i)
160 {
161 entry = g_malloc(entry_size);
162 if (i == 0) {
163 entry_iter = entry + g_sprintf(entry, "%s: ", label);
164 /* fill the label column with whitespaces */
165 for ( ; entry_iter < entry + label_size; ++entry_iter)
166 *entry_iter = ' ';
167 }
168 else {
169 entry_iter = entry;
170 /* fill the label column with whitespaces */
171 for ( ; entry_iter < entry + label_col; ++entry_iter)
172 *entry_iter = ' ';
173 }
174 /* skip whitespaces */
175 while (g_ascii_isspace(*value_iter)) ++value_iter;
176 k = 0;
177 while (value_iter && k < value_col)
178 {
179 g_utf8_strncpy(entry_iter, value_iter, 1);
180 value_iter = g_utf8_find_next_char(value_iter, NULL);
181 entry_iter = g_utf8_find_next_char(entry_iter, NULL);
182 ++k;
183 }
184 *entry_iter = '\0';
185 g_ptr_array_add(current.lines, entry);
186 }
187 }
188 }
190 static void
191 screen_song_append_tag(const char *label, const struct mpd_song *song,
192 enum mpd_tag_type tag, unsigned label_col)
193 {
194 unsigned i = 0;
195 const char *value;
197 while ((value = mpd_song_get_tag(song, tag, i++)) != NULL)
198 screen_song_append(label, value, label_col);
199 }
201 static void
202 screen_song_add_song(const struct mpd_song *song, const struct mpdclient *c)
203 {
204 unsigned i, max_label_width;
205 enum label {
206 ARTIST, TITLE, ALBUM, LENGTH, COMPOSER, NAME, DISC, TRACK,
207 DATE, GENRE, COMMENT, BITRATE
208 };
209 const char *labels[] = { [ARTIST] = _("Artist"),
210 [TITLE] = _("Title"),
211 [ALBUM] = _("Album"),
212 [LENGTH] = _("Length"),
213 [COMPOSER] = _("Composer"),
214 [NAME] = _("Name"),
215 [DISC] = _("Disc"),
216 [TRACK] = _("Track"),
217 [DATE] = _("Date"),
218 [GENRE] = _("Genre"),
219 [COMMENT] = _("Comment"),
220 [BITRATE] = _("Bitrate"),
221 };
222 /* Determine the width of the longest label */
223 max_label_width = utf8_width(labels[0]);
224 for (i = 1; i < G_N_ELEMENTS(labels); ++i) {
225 if (utf8_width(labels[i]) > max_label_width)
226 max_label_width = utf8_width(labels[i]);
227 }
229 assert(song != NULL);
231 screen_song_append_tag(labels[ARTIST], song, MPD_TAG_ARTIST,
232 max_label_width);
233 screen_song_append_tag(labels[TITLE], song, MPD_TAG_TITLE,
234 max_label_width);
235 screen_song_append_tag(labels[ALBUM], song, MPD_TAG_ALBUM,
236 max_label_width);
237 /* create time string and add it */
238 if (mpd_song_get_duration(song) > 0) {
239 char length[16];
240 format_duration_short(length, sizeof(length),
241 mpd_song_get_duration(song));
242 screen_song_append(labels[LENGTH], length, max_label_width);
243 }
244 screen_song_append_tag(labels[COMPOSER], song, MPD_TAG_COMPOSER,
245 max_label_width);
246 screen_song_append_tag(labels[NAME], song, MPD_TAG_NAME,
247 max_label_width);
248 screen_song_append_tag(labels[DISC], song, MPD_TAG_DISC,
249 max_label_width);
250 screen_song_append_tag(labels[TRACK], song, MPD_TAG_TRACK,
251 max_label_width);
252 screen_song_append_tag(labels[DATE], song, MPD_TAG_DATE,
253 max_label_width);
254 screen_song_append_tag(labels[GENRE], song, MPD_TAG_GENRE,
255 max_label_width);
256 screen_song_append_tag(labels[COMMENT], song, MPD_TAG_COMMENT,
257 max_label_width);
258 screen_song_append(_("Path"), mpd_song_get_uri(song), max_label_width);
259 if (c->status != NULL && c->song != NULL &&
260 strcmp(mpd_song_get_uri(c->song), mpd_song_get_uri(song)) == 0 &&
261 (mpd_status_get_state(c->status) == MPD_STATE_PLAY ||
262 mpd_status_get_state(c->status) == MPD_STATE_PAUSE)) {
263 char buf[16];
264 g_snprintf(buf, sizeof(buf), _("%d kbps"),
265 mpd_status_get_kbit_rate(c->status));
266 screen_song_append(labels[BITRATE], buf, max_label_width);
267 }
268 }
270 static bool
271 screen_song_add_stats(struct mpd_connection *connection)
272 {
273 unsigned i, max_label_width;
274 char buf[64];
275 GDate *date;
276 enum label {
277 ARTISTS, ALBUMS, SONGS, UPTIME,
278 DBUPTIME, PLAYTIME, DBPLAYTIME
279 };
280 const char *labels[] = { [ARTISTS] = _("Number of artists"),
281 [ALBUMS] = _("Number of albums"),
282 [SONGS] = _("Number of songs"),
283 [UPTIME] = _("Uptime"),
284 [DBUPTIME] =_("Most recent db update"),
285 [PLAYTIME] = _("Playtime"),
286 [DBPLAYTIME] = _("DB playtime")
287 };
288 struct mpd_stats *mpd_stats;
290 mpd_stats = mpd_run_stats(connection);
291 if (mpd_stats == NULL)
292 return false;
294 /* Determine the width of the longest label */
295 max_label_width = utf8_width(labels[0]);
296 for (i = 1; i < G_N_ELEMENTS(labels); ++i) {
297 if (utf8_width(labels[i]) > max_label_width)
298 max_label_width = utf8_width(labels[i]);
299 }
301 g_ptr_array_add(current.lines, g_strdup(_("MPD statistics")) );
302 g_snprintf(buf, sizeof(buf), "%d",
303 mpd_stats_get_number_of_artists(mpd_stats));
304 screen_song_append(labels[ARTISTS], buf, max_label_width);
305 g_snprintf(buf, sizeof(buf), "%d",
306 mpd_stats_get_number_of_albums(mpd_stats));
307 screen_song_append(labels[ALBUMS], buf, max_label_width);
308 g_snprintf(buf, sizeof(buf), "%d",
309 mpd_stats_get_number_of_songs(mpd_stats));
310 screen_song_append(labels[SONGS], buf, max_label_width);
312 format_duration_long(buf, sizeof(buf),
313 mpd_stats_get_db_play_time(mpd_stats));
314 screen_song_append(labels[DBPLAYTIME], buf, max_label_width);
316 format_duration_long(buf, sizeof(buf),
317 mpd_stats_get_play_time(mpd_stats));
318 screen_song_append(labels[PLAYTIME], buf, max_label_width);
320 format_duration_long(buf, sizeof(buf),
321 mpd_stats_get_uptime(mpd_stats));
322 screen_song_append(labels[UPTIME], buf, max_label_width);
324 date = g_date_new();
325 g_date_set_time_t(date, mpd_stats_get_db_update_time(mpd_stats));
326 g_date_strftime(buf, sizeof(buf), "%x", date);
327 screen_song_append(labels[DBUPTIME], buf, max_label_width);
328 g_date_free(date);
330 mpd_stats_free(mpd_stats);
331 return true;
332 }
334 static void
335 screen_song_update(struct mpdclient *c)
336 {
337 /* Clear all lines */
338 for (guint i = 0; i < current.lines->len; ++i)
339 g_free(g_ptr_array_index(current.lines, i));
340 g_ptr_array_set_size(current.lines, 0);
342 /* If a song was selected before the song screen was opened */
343 if (next_song != NULL) {
344 assert(current.selected_song == NULL);
345 current.selected_song = next_song;
346 next_song = NULL;
347 }
349 if (current.selected_song != NULL &&
350 (c->song == NULL ||
351 strcmp(mpd_song_get_uri(current.selected_song),
352 mpd_song_get_uri(c->song)) != 0 ||
353 c->status == NULL ||
354 (mpd_status_get_state(c->status) != MPD_STATE_PLAY &&
355 mpd_status_get_state(c->status) != MPD_STATE_PAUSE))) {
356 g_ptr_array_add(current.lines, g_strdup(_("Selected song")) );
357 screen_song_add_song(current.selected_song, c);
358 g_ptr_array_add(current.lines, g_strdup("\0"));
359 }
361 if (c->song != NULL && c->status != NULL &&
362 (mpd_status_get_state(c->status) != MPD_STATE_PLAY &&
363 mpd_status_get_state(c->status) != MPD_STATE_PAUSE)) {
364 if (current.played_song != NULL) {
365 mpd_song_free(current.played_song);
366 }
367 current.played_song = mpd_song_dup(c->song);
368 g_ptr_array_add(current.lines, g_strdup(_("Currently playing song")));
369 screen_song_add_song(current.played_song, c);
370 g_ptr_array_add(current.lines, g_strdup("\0"));
371 }
373 /* Add some statistics about mpd */
374 if (mpdclient_is_connected(c) &&
375 !screen_song_add_stats(mpdclient_get_connection(c)))
376 mpdclient_handle_error(c);
378 list_window_set_length(lw, 0);
379 screen_song_repaint();
380 }
382 static bool
383 screen_song_cmd(struct mpdclient *c, command_t cmd)
384 {
385 if (list_window_scroll_cmd(lw, cmd)) {
386 screen_song_repaint();
387 return true;
388 }
390 switch(cmd) {
391 case CMD_LOCATE:
392 if (current.selected_song != NULL) {
393 screen_file_goto_song(c, current.selected_song);
394 return true;
395 }
396 if (current.played_song != NULL) {
397 screen_file_goto_song(c, current.played_song);
398 return true;
399 }
401 return false;
403 #ifdef ENABLE_LYRICS_SCREEN
404 case CMD_SCREEN_LYRICS:
405 if (current.selected_song != NULL) {
406 screen_lyrics_switch(c, current.selected_song, false);
407 return true;
408 }
409 if (current.played_song != NULL) {
410 screen_lyrics_switch(c, current.played_song, true);
411 return true;
412 }
413 return false;
415 #endif
417 case CMD_SCREEN_SWAP:
418 if (current.selected_song != NULL)
419 screen_swap(c, current.selected_song);
420 else
421 // No need to check if this is null - we'd pass null anyway
422 screen_swap(c, current.played_song);
423 return true;
425 default:
426 break;
427 }
429 if (screen_find(lw, cmd, screen_song_list_callback, NULL)) {
430 /* center the row */
431 list_window_center(lw, lw->selected);
432 screen_song_repaint();
433 return true;
434 }
436 return false;
437 }
439 const struct screen_functions screen_song = {
440 .init = screen_song_init,
441 .exit = screen_song_exit,
442 .open = screen_song_update,
443 .close = screen_song_clear,
444 .resize = screen_song_resize,
445 .paint = screen_song_paint,
446 .update = screen_song_update,
447 .cmd = screen_song_cmd,
448 .get_title = screen_song_title,
449 };
451 void
452 screen_song_switch(struct mpdclient *c, const struct mpd_song *song)
453 {
454 assert(song != NULL);
455 assert(current.selected_song == NULL);
456 assert(current.played_song == NULL);
458 next_song = mpd_song_dup(song);
459 screen_switch(&screen_song, c);
460 }