src/screen.c

   1 /* ncmpc (Ncurses MPD Client)
   2  * (c) 2004-2010 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->status == NULL)
 162                 elapsed = 0;
 163         else if (seek_id >= 0 && seek_id == mpd_status_get_song_id(c->status))
 164                 elapsed = seek_target_time;
 165         else
 166                 elapsed = mpd_status_get_elapsed_time(c->status);
 167
 168         duration = mpdclient_is_playing(c)
 169                 ? mpd_status_get_total_time(c->status)
 170                 : 0;
 171
 172         if (progress_bar_set(&screen.progress_bar, elapsed, duration) ||
 173             repaint)
 174                 progress_bar_paint(&screen.progress_bar);
 175 }
 176
 177 void
 178 screen_exit(void)
 179 {
 180         if (mode_fn->close != NULL)
 181                 mode_fn->close();
 182
 183         screen_list_exit();
 184
 185         string_list_free(screen.find_history);
 186         g_free(screen.buf);
 187         g_free(screen.findbuf);
 188
 189         title_bar_deinit(&screen.title_bar);
 190         delwin(screen.main_window.w);
 191         progress_bar_deinit(&screen.progress_bar);
 192         status_bar_deinit(&screen.status_bar);
 193
 194 #ifndef NCMPC_MINI
 195         if (screen.welcome_source_id != 0)
 196                 g_source_remove(screen.welcome_source_id);
 197 #endif
 198 }
 199
 200 void
 201 screen_resize(struct mpdclient *c)
 202 {
 203         if (COLS<SCREEN_MIN_COLS || LINES<SCREEN_MIN_ROWS) {
 204                 screen_exit();
 205                 fprintf(stderr, "%s\n", _("Error: Screen too small"));
 206                 exit(EXIT_FAILURE);
 207         }
 208 #ifdef PDCURSES
 209         resize_term(LINES, COLS);
 210 #else
 211         resizeterm(LINES, COLS);
 212 #endif
 213
 214         screen.cols = COLS;
 215         screen.rows = LINES;
 216
 217         title_bar_resize(&screen.title_bar, screen.cols);
 218
 219         /* main window */
 220         screen.main_window.cols = screen.cols;
 221         screen.main_window.rows = screen.rows-4;
 222         wresize(screen.main_window.w, screen.main_window.rows, screen.cols);
 223         wclear(screen.main_window.w);
 224
 225         /* progress window */
 226         progress_bar_resize(&screen.progress_bar, screen.cols,
 227                             screen.rows - 2, 0);
 228         progress_bar_paint(&screen.progress_bar);
 229
 230         /* status window */
 231         status_bar_resize(&screen.status_bar, screen.cols, screen.rows - 1, 0);
 232         status_bar_paint(&screen.status_bar, c->status, c->song);
 233
 234         screen.buf_size = screen.cols;
 235         g_free(screen.buf);
 236         screen.buf = g_malloc(screen.cols);
 237
 238         /* resize all screens */
 239         screen_list_resize(screen.main_window.cols, screen.main_window.rows);
 240
 241         /* ? - without this the cursor becomes visible with aterm & Eterm */
 242         curs_set(1);
 243         curs_set(0);
 244
 245         screen_paint(c);
 246 }
 247
 248 #ifndef NCMPC_MINI
 249 static gboolean
 250 welcome_timer_callback(gpointer data)
 251 {
 252         struct mpdclient *c = data;
 253
 254 #ifndef NCMPC_MINI
 255         screen.welcome_source_id = 0;
 256 #endif
 257
 258         paint_top_window(mode_fn->get_title != NULL
 259                          ? mode_fn->get_title(screen.buf, screen.buf_size)
 260                          : "",
 261                          c);
 262         doupdate();
 263
 264         return false;
 265 }
 266 #endif
 267
 268 void
 269 screen_init(struct mpdclient *c)
 270 {
 271         if (COLS < SCREEN_MIN_COLS || LINES < SCREEN_MIN_ROWS) {
 272                 fprintf(stderr, "%s\n", _("Error: Screen too small"));
 273                 exit(EXIT_FAILURE);
 274         }
 275
 276         screen.cols = COLS;
 277         screen.rows = LINES;
 278
 279         screen.buf  = g_malloc(screen.cols);
 280         screen.buf_size = screen.cols;
 281         screen.findbuf = NULL;
 282
 283 #ifndef NCMPC_MINI
 284         if (options.welcome_screen_list)
 285                 screen.welcome_source_id =
 286                         g_timeout_add(SCREEN_WELCOME_TIME * 1000,
 287                                       welcome_timer_callback, c);
 288 #endif
 289
 290         /* create top window */
 291         title_bar_init(&screen.title_bar, screen.cols, 0, 0);
 292
 293         /* create main window */
 294         window_init(&screen.main_window, screen.rows - 4, screen.cols, 2, 0);
 295
 296         if (!options.hardware_cursor)
 297                 leaveok(screen.main_window.w, TRUE);
 298
 299         keypad(screen.main_window.w, TRUE);
 300
 301         /* create progress window */
 302         progress_bar_init(&screen.progress_bar, screen.cols,
 303                           screen.rows - 2, 0);
 304         progress_bar_paint(&screen.progress_bar);
 305
 306         /* create status window */
 307         status_bar_init(&screen.status_bar, screen.cols, screen.rows - 1, 0);
 308         status_bar_paint(&screen.status_bar, c->status, c->song);
 309
 310 #ifdef ENABLE_COLORS
 311         if (options.enable_colors) {
 312                 /* set background attributes */
 313                 wbkgd(stdscr, COLOR_PAIR(COLOR_LIST));
 314                 wbkgd(screen.main_window.w,     COLOR_PAIR(COLOR_LIST));
 315                 wbkgd(screen.title_bar.window.w, COLOR_PAIR(COLOR_TITLE));
 316                 wbkgd(screen.progress_bar.window.w,
 317                       COLOR_PAIR(COLOR_PROGRESSBAR));
 318                 wbkgd(screen.status_bar.window.w, COLOR_PAIR(COLOR_STATUS));
 319                 colors_use(screen.progress_bar.window.w, COLOR_PROGRESSBAR);
 320         }
 321 #endif
 322
 323         doupdate();
 324
 325         /* initialize screens */
 326         screen_list_init(screen.main_window.w,
 327                          screen.main_window.cols, screen.main_window.rows);
 328
 329         if (mode_fn->open != NULL)
 330                 mode_fn->open(c);
 331 }
 332
 333 void
 334 screen_paint(struct mpdclient *c)
 335 {
 336         const char *title = NULL;
 337
 338         if (mode_fn->get_title != NULL)
 339                 title = mode_fn->get_title(screen.buf, screen.buf_size);
 340
 341         /* paint the title/header window */
 342         if( title )
 343                 paint_top_window(title, c);
 344         else
 345                 paint_top_window("", c);
 346
 347         /* paint the bottom window */
 348
 349         update_progress_window(c, true);
 350         status_bar_paint(&screen.status_bar, c->status, c->song);
 351
 352         /* paint the main window */
 353
 354         wclear(screen.main_window.w);
 355         if (mode_fn->paint != NULL)
 356                 mode_fn->paint();
 357
 358         /* move the cursor to the origin */
 359
 360         if (!options.hardware_cursor)
 361                 wmove(screen.main_window.w, 0, 0);
 362
 363         wnoutrefresh(screen.main_window.w);
 364
 365         /* tell curses to update */
 366         doupdate();
 367 }
 368
 369 void
 370 screen_update(struct mpdclient *c)
 371 {
 372 #ifndef NCMPC_MINI
 373         static bool was_connected;
 374         static bool initialized = false;
 375         static bool repeat;
 376         static bool random_enabled;
 377         static bool single;
 378         static bool consume;
 379         static unsigned crossfade;
 380
 381         /* print a message if mpd status has changed */
 382         if ((c->events & MPD_IDLE_OPTIONS) && c->status != NULL) {
 383                 if (!initialized) {
 384                         repeat = mpd_status_get_repeat(c->status);
 385                         random_enabled = mpd_status_get_random(c->status);
 386                         single = mpd_status_get_single(c->status);
 387                         consume = mpd_status_get_consume(c->status);
 388                         crossfade = mpd_status_get_crossfade(c->status);
 389                         initialized = true;
 390                 }
 391
 392                 if (repeat != mpd_status_get_repeat(c->status))
 393                         screen_status_printf(mpd_status_get_repeat(c->status) ?
 394                                              _("Repeat mode is on") :
 395                                              _("Repeat mode is off"));
 396
 397                 if (random_enabled != mpd_status_get_random(c->status))
 398                         screen_status_printf(mpd_status_get_random(c->status) ?
 399                                              _("Random mode is on") :
 400                                              _("Random mode is off"));
 401
 402                 if (single != mpd_status_get_single(c->status))
 403                         screen_status_printf(mpd_status_get_single(c->status) ?
 404                                              /* "single" mode means
 405                                                 that MPD will
 406                                                 automatically stop
 407                                                 after playing one
 408                                                 single song */
 409                                              _("Single mode is on") :
 410                                              _("Single mode is off"));
 411
 412                 if (consume != mpd_status_get_consume(c->status))
 413                         screen_status_printf(mpd_status_get_consume(c->status) ?
 414                                              /* "consume" mode means
 415                                                 that MPD removes each
 416                                                 song which has
 417                                                 finished playing */
 418                                              _("Consume mode is on") :
 419                                              _("Consume mode is off"));
 420
 421                 if (crossfade != mpd_status_get_crossfade(c->status))
 422                         screen_status_printf(_("Crossfade %d seconds"),
 423                                              mpd_status_get_crossfade(c->status));
 424
 425                 repeat = mpd_status_get_repeat(c->status);
 426                 random_enabled = mpd_status_get_random(c->status);
 427                 single = mpd_status_get_single(c->status);
 428                 consume = mpd_status_get_consume(c->status);
 429                 crossfade = mpd_status_get_crossfade(c->status);
 430         }
 431
 432         if ((c->events & MPD_IDLE_DATABASE) != 0 && was_connected &&
 433             mpdclient_is_connected(c))
 434                 screen_status_printf(_("Database updated"));
 435         was_connected = mpdclient_is_connected(c);
 436
 437         /* update title/header window */
 438         if (screen.welcome_source_id != 0)
 439                 paint_top_window("", c);
 440         else
 441 #endif
 442         if (mode_fn->get_title != NULL) {
 443                 paint_top_window(mode_fn->get_title(screen.buf,screen.buf_size), c);
 444         } else
 445                 paint_top_window("", c);
 446
 447         /* update progress window */
 448         update_progress_window(c, false);
 449
 450         /* update status window */
 451         status_bar_paint(&screen.status_bar, c->status, c->song);
 452
 453         /* update the main window */
 454         if (mode_fn->update != NULL)
 455                 mode_fn->update(c);
 456
 457         /* move the cursor to the origin */
 458
 459         if (!options.hardware_cursor)
 460                 wmove(screen.main_window.w, 0, 0);
 461
 462         wnoutrefresh(screen.main_window.w);
 463
 464         /* tell curses to update */
 465         doupdate();
 466 }
 467
 468 #ifdef HAVE_GETMOUSE
 469 int
 470 screen_get_mouse_event(struct mpdclient *c, unsigned long *bstate, int *row)
 471 {
 472         MEVENT event;
 473
 474         /* retrieve the mouse event from curses */
 475 #ifdef PDCURSES
 476         nc_getmouse(&event);
 477 #else
 478         getmouse(&event);
 479 #endif
 480         /* calculate the selected row in the list window */
 481         *row = event.y - screen.title_bar.window.rows;
 482         /* copy button state bits */
 483         *bstate = event.bstate;
 484         /* if button 2 was pressed switch screen */
 485         if (event.bstate & BUTTON2_CLICKED) {
 486                 screen_cmd(c, CMD_SCREEN_NEXT);
 487                 return 1;
 488         }
 489
 490         return 0;
 491 }
 492 #endif
 493
 494 void
 495 screen_cmd(struct mpdclient *c, command_t cmd)
 496 {
 497 #ifndef NCMPC_MINI
 498         if (screen.welcome_source_id != 0) {
 499                 g_source_remove(screen.welcome_source_id);
 500                 screen.welcome_source_id = 0;
 501         }
 502 #endif
 503
 504         if (mode_fn->cmd != NULL && mode_fn->cmd(c, cmd))
 505                 return;
 506
 507         if (handle_player_command(c, cmd))
 508                 return;
 509
 510         switch(cmd) {
 511         case CMD_TOGGLE_FIND_WRAP:
 512                 options.find_wrap = !options.find_wrap;
 513                 screen_status_printf(options.find_wrap ?
 514                                      _("Find mode: Wrapped") :
 515                                      _("Find mode: Normal"));
 516                 break;
 517         case CMD_TOGGLE_AUTOCENTER:
 518                 options.auto_center = !options.auto_center;
 519                 screen_status_printf(options.auto_center ?
 520                                      _("Auto center mode: On") :
 521                                      _("Auto center mode: Off"));
 522                 break;
 523         case CMD_SCREEN_UPDATE:
 524                 screen_paint(c);
 525                 break;
 526         case CMD_SCREEN_PREVIOUS:
 527                 screen_next_mode(c, -1);
 528                 break;
 529         case CMD_SCREEN_NEXT:
 530                 screen_next_mode(c, 1);
 531                 break;
 532         case CMD_SCREEN_PLAY:
 533                 screen_switch(&screen_queue, c);
 534                 break;
 535         case CMD_SCREEN_FILE:
 536                 screen_switch(&screen_browse, c);
 537                 break;
 538 #ifdef ENABLE_HELP_SCREEN
 539         case CMD_SCREEN_HELP:
 540                 screen_switch(&screen_help, c);
 541                 break;
 542 #endif
 543 #ifdef ENABLE_SEARCH_SCREEN
 544         case CMD_SCREEN_SEARCH:
 545                 screen_switch(&screen_search, c);
 546                 break;
 547 #endif
 548 #ifdef ENABLE_ARTIST_SCREEN
 549         case CMD_SCREEN_ARTIST:
 550                 screen_switch(&screen_artist, c);
 551                 break;
 552 #endif
 553 #ifdef ENABLE_SONG_SCREEN
 554         case CMD_SCREEN_SONG:
 555                 screen_switch(&screen_song, c);
 556                 break;
 557 #endif
 558 #ifdef ENABLE_KEYDEF_SCREEN
 559         case CMD_SCREEN_KEYDEF:
 560                 screen_switch(&screen_keydef, c);
 561                 break;
 562 #endif
 563 #ifdef ENABLE_LYRICS_SCREEN
 564         case CMD_SCREEN_LYRICS:
 565                 screen_switch(&screen_lyrics, c);
 566                 break;
 567 #endif
 568 #ifdef ENABLE_OUTPUTS_SCREEN
 569         case CMD_SCREEN_OUTPUTS:
 570                 screen_switch(&screen_outputs, c);
 571                 break;
 572 #endif
 573         case CMD_SCREEN_SWAP:
 574                 screen_swap(c, NULL);
 575                 break;
 576
 577         default:
 578                 break;
 579         }
 580 }