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 assert(idx < current.lines->len);
87 value = utf8_to_locale(g_ptr_array_index(current.lines, idx));
88 g_strlcpy(buffer, value, sizeof(buffer));
89 g_free(value);
91 return buffer;
92 }
95 static void
96 screen_song_init(WINDOW *w, int cols, int rows)
97 {
98 /* We will need at least 10 lines, so this saves 10 reallocations :) */
99 current.lines = g_ptr_array_sized_new(10);
100 lw = list_window_init(w, cols, rows);
101 lw->hide_cursor = true;
102 }
104 static void
105 screen_song_exit(void)
106 {
107 list_window_free(lw);
109 screen_song_clear();
111 g_ptr_array_free(current.lines, TRUE);
112 current.lines = NULL;
113 }
115 static void
116 screen_song_resize(int cols, int rows)
117 {
118 lw->cols = cols;
119 lw->rows = rows;
120 }
122 static const char *
123 screen_song_title(G_GNUC_UNUSED char *str, G_GNUC_UNUSED size_t size)
124 {
125 return _("Song viewer");
126 }
128 static void
129 screen_song_paint(void)
130 {
131 list_window_paint(lw, screen_song_list_callback, NULL);
132 }
134 /* Appends a line with a fixed width for the label column
135 * Handles NULL strings gracefully */
136 static void
137 screen_song_append(const char *label, const char *value, unsigned label_col)
138 {
139 int value_col, linebreaks, entry_size, label_size;
140 int i, k;
141 gchar *entry, *entry_iter;
142 const gchar *value_iter;
144 assert(label != NULL);
145 assert(g_utf8_validate(label, -1, NULL));
147 if (value != NULL) {
148 assert(g_utf8_validate(value, -1, NULL));
149 /* +2 for ': ' */
150 label_col += 2;
151 value_col = lw->cols - label_col;
152 /* calculate the number of required linebreaks */
153 linebreaks = (utf8_width(value) - 1) / value_col + 1;
154 value_iter = value;
155 label_size = strlen(label) + label_col - utf8_width(label);
156 entry_size = label_size + strlen(value) + 2;
158 for (i = 0; i < linebreaks; ++i)
159 {
160 entry = g_malloc(entry_size);
161 if (i == 0) {
162 entry_iter = entry + g_sprintf(entry, "%s: ", label);
163 /* fill the label column with whitespaces */
164 for ( ; entry_iter < entry + label_size; ++entry_iter)
165 *entry_iter = ' ';
166 }
167 else {
168 entry_iter = entry;
169 /* fill the label column with whitespaces */
170 for ( ; entry_iter < entry + label_col; ++entry_iter)
171 *entry_iter = ' ';
172 }
173 /* skip whitespaces */
174 while (g_ascii_isspace(*value_iter)) ++value_iter;
175 k = 0;
176 while (value_iter && k < value_col)
177 {
178 g_utf8_strncpy(entry_iter, value_iter, 1);
179 value_iter = g_utf8_find_next_char(value_iter, NULL);
180 entry_iter = g_utf8_find_next_char(entry_iter, NULL);
181 ++k;
182 }
183 *entry_iter = '\0';
184 g_ptr_array_add(current.lines, entry);
185 }
186 }
187 }
189 static void
190 screen_song_append_tag(const char *label, const struct mpd_song *song,
191 enum mpd_tag_type tag, unsigned label_col)
192 {
193 unsigned i = 0;
194 const char *value;
196 while ((value = mpd_song_get_tag(song, tag, i++)) != NULL)
197 screen_song_append(label, value, label_col);
198 }
200 static void
201 screen_song_add_song(const struct mpd_song *song, const struct mpdclient *c)
202 {
203 unsigned i, max_label_width;
204 enum label {
205 ARTIST, TITLE, ALBUM, LENGTH, COMPOSER, NAME, DISC, TRACK,
206 DATE, GENRE, COMMENT, BITRATE
207 };
208 const char *labels[] = { [ARTIST] = _("Artist"),
209 [TITLE] = _("Title"),
210 [ALBUM] = _("Album"),
211 [LENGTH] = _("Length"),
212 [COMPOSER] = _("Composer"),
213 [NAME] = _("Name"),
214 [DISC] = _("Disc"),
215 [TRACK] = _("Track"),
216 [DATE] = _("Date"),
217 [GENRE] = _("Genre"),
218 [COMMENT] = _("Comment"),
219 [BITRATE] = _("Bitrate"),
220 };
221 /* Determine the width of the longest label */
222 max_label_width = utf8_width(labels[0]);
223 for (i = 1; i < G_N_ELEMENTS(labels); ++i) {
224 if (utf8_width(labels[i]) > max_label_width)
225 max_label_width = utf8_width(labels[i]);
226 }
228 assert(song != NULL);
230 screen_song_append_tag(labels[ARTIST], song, MPD_TAG_ARTIST,
231 max_label_width);
232 screen_song_append_tag(labels[TITLE], song, MPD_TAG_TITLE,
233 max_label_width);
234 screen_song_append_tag(labels[ALBUM], song, MPD_TAG_ALBUM,
235 max_label_width);
236 /* create time string and add it */
237 if (mpd_song_get_duration(song) > 0) {
238 char length[16];
239 format_duration_short(length, sizeof(length),
240 mpd_song_get_duration(song));
241 screen_song_append(labels[LENGTH], length, max_label_width);
242 }
243 screen_song_append_tag(labels[COMPOSER], song, MPD_TAG_COMPOSER,
244 max_label_width);
245 screen_song_append_tag(labels[NAME], song, MPD_TAG_NAME,
246 max_label_width);
247 screen_song_append_tag(labels[DISC], song, MPD_TAG_DISC,
248 max_label_width);
249 screen_song_append_tag(labels[TRACK], song, MPD_TAG_TRACK,
250 max_label_width);
251 screen_song_append_tag(labels[DATE], song, MPD_TAG_DATE,
252 max_label_width);
253 screen_song_append_tag(labels[GENRE], song, MPD_TAG_GENRE,
254 max_label_width);
255 screen_song_append_tag(labels[COMMENT], song, MPD_TAG_COMMENT,
256 max_label_width);
257 screen_song_append(_("Path"), mpd_song_get_uri(song), max_label_width);
258 if (c->status != NULL && c->song != NULL &&
259 strcmp(mpd_song_get_uri(c->song), mpd_song_get_uri(song)) == 0 &&
260 (mpd_status_get_state(c->status) == MPD_STATE_PLAY ||
261 mpd_status_get_state(c->status) == MPD_STATE_PAUSE)) {
262 char buf[16];
263 g_snprintf(buf, sizeof(buf), _("%d kbps"),
264 mpd_status_get_kbit_rate(c->status));
265 screen_song_append(labels[BITRATE], buf, max_label_width);
266 }
267 }
269 static bool
270 screen_song_add_stats(struct mpd_connection *connection)
271 {
272 unsigned i, max_label_width;
273 char buf[64];
274 GDate *date;
275 enum label {
276 ARTISTS, ALBUMS, SONGS, UPTIME,
277 DBUPTIME, PLAYTIME, DBPLAYTIME
278 };
279 const char *labels[] = { [ARTISTS] = _("Number of artists"),
280 [ALBUMS] = _("Number of albums"),
281 [SONGS] = _("Number of songs"),
282 [UPTIME] = _("Uptime"),
283 [DBUPTIME] =_("Most recent db update"),
284 [PLAYTIME] = _("Playtime"),
285 [DBPLAYTIME] = _("DB playtime")
286 };
287 struct mpd_stats *mpd_stats;
289 mpd_stats = mpd_run_stats(connection);
290 if (mpd_stats == NULL)
291 return false;
293 /* Determine the width of the longest label */
294 max_label_width = utf8_width(labels[0]);
295 for (i = 1; i < G_N_ELEMENTS(labels); ++i) {
296 if (utf8_width(labels[i]) > max_label_width)
297 max_label_width = utf8_width(labels[i]);
298 }
300 g_ptr_array_add(current.lines, g_strdup(_("MPD statistics")) );
301 g_snprintf(buf, sizeof(buf), "%d",
302 mpd_stats_get_number_of_artists(mpd_stats));
303 screen_song_append(labels[ARTISTS], buf, max_label_width);
304 g_snprintf(buf, sizeof(buf), "%d",
305 mpd_stats_get_number_of_albums(mpd_stats));
306 screen_song_append(labels[ALBUMS], buf, max_label_width);
307 g_snprintf(buf, sizeof(buf), "%d",
308 mpd_stats_get_number_of_songs(mpd_stats));
309 screen_song_append(labels[SONGS], buf, max_label_width);
311 format_duration_long(buf, sizeof(buf),
312 mpd_stats_get_db_play_time(mpd_stats));
313 screen_song_append(labels[DBPLAYTIME], buf, max_label_width);
315 format_duration_long(buf, sizeof(buf),
316 mpd_stats_get_play_time(mpd_stats));
317 screen_song_append(labels[PLAYTIME], buf, max_label_width);
319 format_duration_long(buf, sizeof(buf),
320 mpd_stats_get_uptime(mpd_stats));
321 screen_song_append(labels[UPTIME], buf, max_label_width);
323 date = g_date_new();
324 g_date_set_time_t(date, mpd_stats_get_db_update_time(mpd_stats));
325 g_date_strftime(buf, sizeof(buf), "%x", date);
326 screen_song_append(labels[DBUPTIME], buf, max_label_width);
327 g_date_free(date);
329 mpd_stats_free(mpd_stats);
330 return true;
331 }
333 static void
334 screen_song_update(struct mpdclient *c)
335 {
336 /* Clear all lines */
337 for (guint i = 0; i < current.lines->len; ++i)
338 g_free(g_ptr_array_index(current.lines, i));
339 g_ptr_array_set_size(current.lines, 0);
341 /* If a song was selected before the song screen was opened */
342 if (next_song != NULL) {
343 assert(current.selected_song == NULL);
344 current.selected_song = next_song;
345 next_song = NULL;
346 }
348 if (current.selected_song != NULL &&
349 (c->song == NULL ||
350 strcmp(mpd_song_get_uri(current.selected_song),
351 mpd_song_get_uri(c->song)) != 0 ||
352 c->status == NULL ||
353 (mpd_status_get_state(c->status) != MPD_STATE_PLAY &&
354 mpd_status_get_state(c->status) != MPD_STATE_PAUSE))) {
355 g_ptr_array_add(current.lines, g_strdup(_("Selected song")) );
356 screen_song_add_song(current.selected_song, c);
357 g_ptr_array_add(current.lines, g_strdup("\0"));
358 }
360 if (c->song != NULL && c->status != NULL &&
361 (mpd_status_get_state(c->status) != MPD_STATE_PLAY &&
362 mpd_status_get_state(c->status) != MPD_STATE_PAUSE)) {
363 if (current.played_song != NULL) {
364 mpd_song_free(current.played_song);
365 }
366 current.played_song = mpd_song_dup(c->song);
367 g_ptr_array_add(current.lines, g_strdup(_("Currently playing song")));
368 screen_song_add_song(current.played_song, c);
369 g_ptr_array_add(current.lines, g_strdup("\0"));
370 }
372 /* Add some statistics about mpd */
373 if (mpdclient_is_connected(c) &&
374 !screen_song_add_stats(mpdclient_get_connection(c)))
375 mpdclient_handle_error(c);
377 list_window_set_length(lw, 0);
378 screen_song_repaint();
379 }
381 static bool
382 screen_song_cmd(struct mpdclient *c, command_t cmd)
383 {
384 if (list_window_scroll_cmd(lw, cmd)) {
385 screen_song_repaint();
386 return true;
387 }
389 switch(cmd) {
390 case CMD_LOCATE:
391 if (current.selected_song != NULL) {
392 screen_file_goto_song(c, current.selected_song);
393 return true;
394 }
395 if (current.played_song != NULL) {
396 screen_file_goto_song(c, current.played_song);
397 return true;
398 }
400 return false;
402 #ifdef ENABLE_LYRICS_SCREEN
403 case CMD_SCREEN_LYRICS:
404 if (current.selected_song != NULL) {
405 screen_lyrics_switch(c, current.selected_song, false);
406 return true;
407 }
408 if (current.played_song != NULL) {
409 screen_lyrics_switch(c, current.played_song, true);
410 return true;
411 }
412 return false;
414 #endif
416 case CMD_SCREEN_SWAP:
417 if (current.selected_song != NULL)
418 screen_swap(c, current.selected_song);
419 else
420 // No need to check if this is null - we'd pass null anyway
421 screen_swap(c, current.played_song);
422 return true;
424 default:
425 break;
426 }
428 if (screen_find(lw, cmd, screen_song_list_callback, NULL)) {
429 /* center the row */
430 list_window_center(lw, lw->selected);
431 screen_song_repaint();
432 return true;
433 }
435 return false;
436 }
438 const struct screen_functions screen_song = {
439 .init = screen_song_init,
440 .exit = screen_song_exit,
441 .open = screen_song_update,
442 .close = screen_song_clear,
443 .resize = screen_song_resize,
444 .paint = screen_song_paint,
445 .update = screen_song_update,
446 .cmd = screen_song_cmd,
447 .get_title = screen_song_title,
448 };
450 void
451 screen_song_switch(struct mpdclient *c, const struct mpd_song *song)
452 {
453 assert(song != NULL);
454 assert(current.selected_song == NULL);
455 assert(current.played_song == NULL);
457 next_song = mpd_song_dup(song);
458 screen_switch(&screen_song, c);
459 }