src/screen.c

   1 /* ncmpc (Ncurses MPD Client)
   2  * (c) 2004-2009 The Music Player Daemon Project
   3  * Project homepage: http://musicpd.org
   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,
  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.
  14
  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 */
  19
  20 #include "screen.h"
  21 #include "screen_interface.h"
  22 #include "screen_list.h"
  23 #include "screen_utils.h"
  24 #include "screen_message.h"
  25 #include "config.h"
  26 #include "i18n.h"
  27 #include "charset.h"
  28 #include "mpdclient.h"
  29 #include "utils.h"
  30 #include "options.h"
  31 #include "colors.h"
  32 #include "player_command.h"
  33 #include "screen_help.h"
  34 #include "screen_queue.h"
  35 #include "screen_file.h"
  36 #include "screen_artist.h"
  37 #include "screen_search.h"
  38 #include "screen_song.h"
  39 #include "screen_keydef.h"
  40 #include "screen_lyrics.h"
  41 #include "screen_outputs.h"
  42
  43 #include <mpd/client.h>
  44
  45 #include <stdlib.h>
  46 #include <unistd.h>
  47 #include <string.h>
  48 #include <time.h>
  49 #include <locale.h>
  50
  51 #ifndef NCMPC_MINI
  52 /** welcome message time [s] */
  53 static const GTime SCREEN_WELCOME_TIME = 10;
  54 #endif
  55
  56 /* minimum window size */
  57 static const int SCREEN_MIN_COLS = 14;
  58 static const int SCREEN_MIN_ROWS = 5;
  59
  60 /* screens */
  61
  62 struct screen screen;
  63 static const struct screen_functions *mode_fn = &screen_queue;
  64 static const struct screen_functions *mode_fn_prev = &screen_queue;
  65
  66 gboolean
  67 screen_is_visible(const struct screen_functions *sf)
  68 {
  69         return sf == mode_fn;
  70 }
  71
  72 void
  73 screen_switch(const struct screen_functions *sf, struct mpdclient *c)
  74 {
  75         assert(sf != NULL);
  76
  77         if (sf == mode_fn)
  78                 return;
  79
  80         mode_fn_prev = mode_fn;
  81
  82         /* close the old mode */
  83         if (mode_fn->close != NULL)
  84                 mode_fn->close();
  85
  86         /* get functions for the new mode */
  87         mode_fn = sf;
  88
  89         /* open the new mode */
  90         if (mode_fn->open != NULL)
  91                 mode_fn->open(c);
  92
  93         screen_paint(c);
  94 }
  95
  96 void
  97 screen_swap(struct mpdclient *c, const struct mpd_song *song)
  98 {
  99         if (song != NULL)
 100         {
 101                 if (false)
 102                         { /* just a hack to make the ifdefs less ugly */ }
 103 #ifdef ENABLE_SONG_SCREEN
 104                 if (mode_fn_prev == &screen_song)
 105                         screen_song_switch(c, song);
 106 #endif
 107 #ifdef ENABLE_LYRICS_SCREEN
 108                 else if (mode_fn_prev == &screen_lyrics)
 109                         screen_lyrics_switch(c, song, true);
 110 #endif
 111                 else
 112                         screen_switch(mode_fn_prev, c);
 113         }
 114         else
 115                 screen_switch(mode_fn_prev, c);
 116 }
 117
 118 static int
 119 find_configured_screen(const char *name)
 120 {
 121         unsigned i;
 122
 123         for (i = 0; options.screen_list[i] != NULL; ++i)
 124                 if (strcmp(options.screen_list[i], name) == 0)
 125                         return i;
 126
 127         return -1;
 128 }
 129
 130 static void
 131 screen_next_mode(struct mpdclient *c, int offset)
 132 {
 133         int max = g_strv_length(options.screen_list);
 134         int current, next;
 135         const struct screen_functions *sf;
 136
 137         /* find current screen */
 138         current = find_configured_screen(screen_get_name(mode_fn));
 139         next = current + offset;
 140         if (next<0)
 141                 next = max-1;
 142         else if (next>=max)
 143                 next = 0;
 144
 145         sf = screen_lookup_name(options.screen_list[next]);
 146         if (sf != NULL)
 147                 screen_switch(sf, c);
 148 }
 149
 150 static void
 151 paint_top_window(const char *header, const struct mpdclient *c)
 152 {
 153         title_bar_paint(&screen.title_bar, header, c->status);
 154 }
 155
 156 static void
 157 update_progress_window(struct mpdclient *c, bool repaint)
 158 {
 159         unsigned elapsed, duration;
 160
 161         if (c->song != NULL && seek_id == (int)mpd_song_get_id(c->song))
 162                 elapsed = seek_target_time;
 163         else if (c->status != NULL)
 164                 elapsed = mpd_status_get_elapsed_time(c->status);
 165         else
 166                 elapsed = 0;
 167
 168         duration = c->status != NULL &&
 169                 (mpd_status_get_state(c->status) == MPD_STATE_PLAY ||
 170                  mpd_status_get_state(c->status) == MPD_STATE_PAUSE)
 171                 ? mpd_status_get_total_time(c->status)
 172                 : 0;
 173
 174         if (progress_bar_set(&screen.progress_bar, elapsed, duration) ||
 175             repaint)
 176                 progress_bar_paint(&screen.progress_bar);
 177 }
 178
 179 void
 180 screen_exit(void)
 181 {
 182         if (mode_fn->close != NULL)
 183                 mode_fn->close();
 184
 185         screen_list_exit();
 186
 187         string_list_free(screen.find_history);
 188         g_free(screen.buf);
 189         g_free(screen.findbuf);
 190
 191         title_bar_deinit(&screen.title_bar);
 192         delwin(screen.main_window.w);
 193         progress_bar_deinit(&screen.progress_bar);
 194         status_bar_deinit(&screen.status_bar);
 195
 196 #ifndef NCMPC_MINI
 197         if (screen.welcome_source_id != 0)
 198                 g_source_remove(screen.welcome_source_id);
 199 #endif
 200 }
 201
 202 void
 203 screen_resize(struct mpdclient *c)
 204 {
 205         if (COLS<SCREEN_MIN_COLS || LINES<SCREEN_MIN_ROWS) {
 206                 screen_exit();
 207                 fprintf(stderr, "%s", _("Error: Screen too small"));
 208                 exit(EXIT_FAILURE);
 209         }
 210
 211         resizeterm(LINES, COLS);
 212
 213         screen.cols = COLS;
 214         screen.rows = LINES;
 215
 216         title_bar_resize(&screen.title_bar, screen.cols);
 217
 218         /* main window */
 219         screen.main_window.cols = screen.cols;
 220         screen.main_window.rows = screen.rows-4;
 221         wresize(screen.main_window.w, screen.main_window.rows, screen.cols);
 222         wclear(screen.main_window.w);
 223
 224         /* progress window */
 225         progress_bar_resize(&screen.progress_bar, screen.cols,
 226                             screen.rows - 2, 0);
 227         progress_bar_paint(&screen.progress_bar);
 228
 229         /* status window */
 230         status_bar_resize(&screen.status_bar, screen.cols, screen.rows - 1, 0);
 231         status_bar_paint(&screen.status_bar, c->status, c->song);
 232
 233         screen.buf_size = screen.cols;
 234         g_free(screen.buf);
 235         screen.buf = g_malloc(screen.cols);
 236
 237         /* resize all screens */
 238         screen_list_resize(screen.main_window.cols, screen.main_window.rows);
 239
 240         /* ? - without this the cursor becomes visible with aterm & Eterm */
 241         curs_set(1);
 242         curs_set(0);
 243
 244         screen_paint(c);
 245 }
 246
 247 #ifndef NCMPC_MINI
 248 static gboolean
 249 welcome_timer_callback(gpointer data)
 250 {
 251         struct mpdclient *c = data;
 252
 253 #ifndef NCMPC_MINI
 254         screen.welcome_source_id = 0;
 255 #endif
 256
 257         paint_top_window(mode_fn->get_title != NULL
 258                          ? mode_fn->get_title(screen.buf, screen.buf_size)
 259                          : "",
 260                          c);
 261         doupdate();
 262
 263         return false;
 264 }
 265 #endif
 266
 267 void
 268 screen_init(struct mpdclient *c)
 269 {
 270         if (COLS < SCREEN_MIN_COLS || LINES < SCREEN_MIN_ROWS) {
 271                 fprintf(stderr, "%s\n", _("Error: Screen too small"));
 272                 exit(EXIT_FAILURE);
 273         }
 274
 275         screen.cols = COLS;
 276         screen.rows = LINES;
 277
 278         screen.buf  = g_malloc(screen.cols);
 279         screen.buf_size = screen.cols;
 280         screen.findbuf = NULL;
 281
 282 #ifndef NCMPC_MINI
 283         if (options.welcome_screen_list)
 284                 screen.welcome_source_id =
 285                         g_timeout_add(SCREEN_WELCOME_TIME * 1000,
 286                                       welcome_timer_callback, c);
 287 #endif
 288
 289         /* create top window */
 290         title_bar_init(&screen.title_bar, screen.cols, 0, 0);
 291
 292         /* create main window */
 293         window_init(&screen.main_window, screen.rows - 4, screen.cols, 2, 0);
 294
 295         //  leaveok(screen.main_window.w, TRUE); temporary disabled
 296         keypad(screen.main_window.w, TRUE);
 297
 298         /* create progress window */
 299         progress_bar_init(&screen.progress_bar, screen.cols,
 300                           screen.rows - 2, 0);
 301         progress_bar_paint(&screen.progress_bar);
 302
 303         /* create status window */
 304         status_bar_init(&screen.status_bar, screen.cols, screen.rows - 1, 0);
 305         status_bar_paint(&screen.status_bar, c->status, c->song);
 306
 307 #ifdef ENABLE_COLORS
 308         if (options.enable_colors) {
 309                 /* set background attributes */
 310                 wbkgd(stdscr, COLOR_PAIR(COLOR_LIST));
 311                 wbkgd(screen.main_window.w,     COLOR_PAIR(COLOR_LIST));
 312                 wbkgd(screen.title_bar.window.w, COLOR_PAIR(COLOR_TITLE));
 313                 wbkgd(screen.progress_bar.window.w,
 314                       COLOR_PAIR(COLOR_PROGRESSBAR));
 315                 wbkgd(screen.status_bar.window.w, COLOR_PAIR(COLOR_STATUS));
 316                 colors_use(screen.progress_bar.window.w, COLOR_PROGRESSBAR);
 317         }
 318 #endif
 319
 320         doupdate();
 321
 322         /* initialize screens */
 323         screen_list_init(screen.main_window.w,
 324                          screen.main_window.cols, screen.main_window.rows);
 325
 326         if (mode_fn->open != NULL)
 327                 mode_fn->open(c);
 328 }
 329
 330 void
 331 screen_paint(struct mpdclient *c)
 332 {
 333         const char *title = NULL;
 334
 335         if (mode_fn->get_title != NULL)
 336                 title = mode_fn->get_title(screen.buf, screen.buf_size);
 337
 338         /* paint the title/header window */
 339         if( title )
 340                 paint_top_window(title, c);
 341         else
 342                 paint_top_window("", c);
 343
 344         /* paint the bottom window */
 345
 346         update_progress_window(c, true);
 347         status_bar_paint(&screen.status_bar, c->status, c->song);
 348
 349         /* paint the main window */
 350
 351         wclear(screen.main_window.w);
 352         if (mode_fn->paint != NULL)
 353                 mode_fn->paint();
 354
 355         /* move the cursor to the origin */
 356
 357         if (!options.hardware_cursor)
 358                 wmove(screen.main_window.w, 0, 0);
 359
 360         wnoutrefresh(screen.main_window.w);
 361
 362         /* tell curses to update */
 363         doupdate();
 364 }
 365
 366 void
 367 screen_update(struct mpdclient *c)
 368 {
 369 #ifndef NCMPC_MINI
 370         static bool was_connected;
 371         static bool initialized = false;
 372         static bool repeat;
 373         static bool random_enabled;
 374         static bool single;
 375         static bool consume;
 376         static unsigned crossfade;
 377
 378         /* print a message if mpd status has changed */
 379         if ((c->events & MPD_IDLE_OPTIONS) && c->status != NULL) {
 380                 if (!initialized) {
 381                         repeat = mpd_status_get_repeat(c->status);
 382                         random_enabled = mpd_status_get_random(c->status);
 383                         single = mpd_status_get_single(c->status);
 384                         consume = mpd_status_get_consume(c->status);
 385                         crossfade = mpd_status_get_crossfade(c->status);
 386                         initialized = true;
 387                 }
 388
 389                 if (repeat != mpd_status_get_repeat(c->status))
 390                         screen_status_printf(mpd_status_get_repeat(c->status) ?
 391                                              _("Repeat mode is on") :
 392                                              _("Repeat mode is off"));
 393
 394                 if (random_enabled != mpd_status_get_random(c->status))
 395                         screen_status_printf(mpd_status_get_random(c->status) ?
 396                                              _("Random mode is on") :
 397                                              _("Random mode is off"));
 398
 399                 if (single != mpd_status_get_single(c->status))
 400                         screen_status_printf(mpd_status_get_single(c->status) ?
 401                                              /* "single" mode means
 402                                                 that MPD will
 403                                                 automatically stop
 404                                                 after playing one
 405                                                 single song */
 406                                              _("Single mode is on") :
 407                                              _("Single mode is off"));
 408
 409                 if (consume != mpd_status_get_consume(c->status))
 410                         screen_status_printf(mpd_status_get_consume(c->status) ?
 411                                              /* "consume" mode means
 412                                                 that MPD removes each
 413                                                 song which has
 414                                                 finished playing */
 415                                              _("Consume mode is on") :
 416                                              _("Consume mode is off"));
 417
 418                 if (crossfade != mpd_status_get_crossfade(c->status))
 419                         screen_status_printf(_("Crossfade %d seconds"),
 420                                              mpd_status_get_crossfade(c->status));
 421
 422                 repeat = mpd_status_get_repeat(c->status);
 423                 random_enabled = mpd_status_get_random(c->status);
 424                 single = mpd_status_get_single(c->status);
 425                 consume = mpd_status_get_consume(c->status);
 426                 crossfade = mpd_status_get_crossfade(c->status);
 427         }
 428
 429         if ((c->events & MPD_IDLE_DATABASE) != 0 && was_connected &&
 430             mpdclient_is_connected(c))
 431                 screen_status_printf(_("Database updated"));
 432         was_connected = mpdclient_is_connected(c);
 433
 434         /* update title/header window */
 435         if (screen.welcome_source_id != 0)
 436                 paint_top_window("", c);
 437         else
 438 #endif
 439         if (mode_fn->get_title != NULL) {
 440                 paint_top_window(mode_fn->get_title(screen.buf,screen.buf_size), c);
 441         } else
 442                 paint_top_window("", c);
 443
 444         /* update progress window */
 445         update_progress_window(c, false);
 446
 447         /* update status window */
 448         status_bar_paint(&screen.status_bar, c->status, c->song);
 449
 450         /* update the main window */
 451         if (mode_fn->update != NULL)
 452                 mode_fn->update(c);
 453
 454         /* move the cursor to the origin */
 455
 456         if (!options.hardware_cursor)
 457                 wmove(screen.main_window.w, 0, 0);
 458
 459         wnoutrefresh(screen.main_window.w);
 460
 461         /* tell curses to update */
 462         doupdate();
 463 }
 464
 465 #ifdef HAVE_GETMOUSE
 466 int
 467 screen_get_mouse_event(struct mpdclient *c, unsigned long *bstate, int *row)
 468 {
 469         MEVENT event;
 470
 471         /* retrieve the mouse event from ncurses */
 472         getmouse(&event);
 473         /* calculate the selected row in the list window */
 474         *row = event.y - screen.title_bar.window.rows;
 475         /* copy button state bits */
 476         *bstate = event.bstate;
 477         /* if button 2 was pressed switch screen */
 478         if (event.bstate & BUTTON2_CLICKED) {
 479                 screen_cmd(c, CMD_SCREEN_NEXT);
 480                 return 1;
 481         }
 482
 483         return 0;
 484 }
 485 #endif
 486
 487 void
 488 screen_cmd(struct mpdclient *c, command_t cmd)
 489 {
 490 #ifndef NCMPC_MINI
 491         if (screen.welcome_source_id != 0) {
 492                 g_source_remove(screen.welcome_source_id);
 493                 screen.welcome_source_id = 0;
 494         }
 495 #endif
 496
 497         if (mode_fn->cmd != NULL && mode_fn->cmd(c, cmd))
 498                 return;
 499
 500         if (handle_player_command(c, cmd))
 501                 return;
 502
 503         switch(cmd) {
 504         case CMD_TOGGLE_FIND_WRAP:
 505                 options.find_wrap = !options.find_wrap;
 506                 screen_status_printf(options.find_wrap ?
 507                                      _("Find mode: Wrapped") :
 508                                      _("Find mode: Normal"));
 509                 break;
 510         case CMD_TOGGLE_AUTOCENTER:
 511                 options.auto_center = !options.auto_center;
 512                 screen_status_printf(options.auto_center ?
 513                                      _("Auto center mode: On") :
 514                                      _("Auto center mode: Off"));
 515                 break;
 516         case CMD_SCREEN_UPDATE:
 517                 screen_paint(c);
 518                 break;
 519         case CMD_SCREEN_PREVIOUS:
 520                 screen_next_mode(c, -1);
 521                 break;
 522         case CMD_SCREEN_NEXT:
 523                 screen_next_mode(c, 1);
 524                 break;
 525         case CMD_SCREEN_PLAY:
 526                 screen_switch(&screen_queue, c);
 527                 break;
 528         case CMD_SCREEN_FILE:
 529                 screen_switch(&screen_browse, c);
 530                 break;
 531 #ifdef ENABLE_HELP_SCREEN
 532         case CMD_SCREEN_HELP:
 533                 screen_switch(&screen_help, c);
 534                 break;
 535 #endif
 536 #ifdef ENABLE_SEARCH_SCREEN
 537         case CMD_SCREEN_SEARCH:
 538                 screen_switch(&screen_search, c);
 539                 break;
 540 #endif
 541 #ifdef ENABLE_ARTIST_SCREEN
 542         case CMD_SCREEN_ARTIST:
 543                 screen_switch(&screen_artist, c);
 544                 break;
 545 #endif
 546 #ifdef ENABLE_SONG_SCREEN
 547         case CMD_SCREEN_SONG:
 548                 screen_switch(&screen_song, c);
 549                 break;
 550 #endif
 551 #ifdef ENABLE_KEYDEF_SCREEN
 552         case CMD_SCREEN_KEYDEF:
 553                 screen_switch(&screen_keydef, c);
 554                 break;
 555 #endif
 556 #ifdef ENABLE_LYRICS_SCREEN
 557         case CMD_SCREEN_LYRICS:
 558                 screen_switch(&screen_lyrics, c);
 559                 break;
 560 #endif
 561 #ifdef ENABLE_OUTPUTS_SCREEN
 562         case CMD_SCREEN_OUTPUTS:
 563                 screen_switch(&screen_outputs, c);
 564                 break;
 565         case CMD_SCREEN_SWAP:
 566                 screen_swap(c, NULL);
 567                 break;
 568 #endif
 569
 570         default:
 571                 break;
 572         }
 573 }