screen.c

   1 /*
   2  * $Id: screen.c,v 1.10 2004/03/17 14:50:12 kalle Exp $
   3  *
   4  */
   5
   6 #include <stdlib.h>
   7 #include <unistd.h>
   8 #include <stdarg.h>
   9 #include <string.h>
  10 #include <time.h>
  11 #include <glib.h>
  12 #include <ncurses.h>
  13
  14 #include "libmpdclient.h"
  15 #include "mpc.h"
  16 #include "command.h"
  17 #include "screen.h"
  18 #include "screen_play.h"
  19 #include "screen_file.h"
  20 #include "screen_help.h"
  21 #include "screen_search.h"
  22
  23 #define STATUS_MESSAGE_TIMEOUT 3
  24 #define STATUS_LINE_MAX_SIZE   512
  25
  26 static screen_t *screen = NULL;
  27
  28 static void
  29 switch_screen_mode(screen_mode_t new_mode, mpd_client_t *c)
  30 {
  31   if( new_mode == screen->mode )
  32     return;
  33
  34  switch(screen->mode)
  35     {
  36     case SCREEN_PLAY_WINDOW:
  37       play_close(screen, c);
  38       break;
  39     case SCREEN_FILE_WINDOW:
  40       file_close(screen, c);
  41       break;
  42     case SCREEN_SEARCH_WINDOW:
  43       search_close(screen, c);
  44       break;
  45     case SCREEN_HELP_WINDOW:
  46       help_close(screen, c);
  47       break;
  48     }
  49
  50  screen->mode = new_mode;
  51  screen->painted = 0;
  52
  53  switch(screen->mode)
  54     {
  55     case SCREEN_PLAY_WINDOW:
  56       play_open(screen, c);
  57       break;
  58     case SCREEN_FILE_WINDOW:
  59       file_open(screen, c);
  60       break;
  61     case SCREEN_SEARCH_WINDOW:
  62       search_open(screen, c);
  63       break;
  64     case SCREEN_HELP_WINDOW:
  65       help_open(screen, c);
  66       break;
  67     }
  68 }
  69
  70 static void
  71 paint_top_window(char *header, int volume, int clear)
  72 {
  73   static int prev_volume = -1;
  74   WINDOW *w = screen->top_window.w;
  75
  76   if(clear)
  77     {
  78       wclear(w);
  79     }
  80
  81   if(prev_volume!=volume || clear)
  82     {
  83       char buf[12];
  84
  85       wattron(w, A_BOLD);
  86       mvwaddstr(w, 0, 0, header );
  87       wattroff(w, A_BOLD);
  88       if( volume==MPD_STATUS_NO_VOLUME )
  89         {
  90           snprintf(buf, 12, "Volume n/a ");
  91         }
  92       else
  93         {
  94           snprintf(buf, 12, "Volume %3d%%", volume);
  95         }
  96       mvwaddstr(w, 0, screen->top_window.cols-12, buf);
  97
  98       mvwhline(w, 1, 0, ACS_HLINE, screen->top_window.cols);
  99
 100       wrefresh(w);
 101     }
 102 }
 103
 104 static void
 105 paint_progress_window(mpd_client_t *c)
 106 {
 107   double p;
 108   int width;
 109
 110   if( c->status==NULL || !IS_PLAYING(c->status->state) )
 111     {
 112       mvwhline(screen->progress_window.w, 0, 0, ACS_HLINE,
 113                screen->progress_window.cols);
 114       wrefresh(screen->progress_window.w);
 115       return;
 116     }
 117
 118   p = ((double) c->status->elapsedTime) / ((double) c->status->totalTime);
 119
 120   width = (int) (p * (double) screen->progress_window.cols);
 121
 122   mvwhline(screen->progress_window.w,
 123            0, 0,
 124            ACS_HLINE,
 125            screen->progress_window.cols);
 126
 127   whline(screen->progress_window.w, '=', width-1);
 128
 129   mvwaddch(screen->progress_window.w, 0, width-1, 'O');
 130   wrefresh(screen->progress_window.w);
 131 }
 132
 133 static void
 134 paint_status_window(mpd_client_t *c)
 135 {
 136   WINDOW *w = screen->status_window.w;
 137   mpd_Status *status = c->status;
 138   mpd_Song *song   = c->song;
 139   int x = 0;
 140
 141   if( time(NULL) - screen->status_timestamp <= STATUS_MESSAGE_TIMEOUT )
 142     return;
 143
 144   wmove(w, 0, 0);
 145   wclrtoeol(w);
 146
 147   switch(status->state)
 148     {
 149     case MPD_STATUS_STATE_STOP:
 150       wattron(w, A_BOLD);
 151       waddstr(w, "Stopped! ");
 152       wattroff(w, A_BOLD);
 153       break;
 154     case MPD_STATUS_STATE_PLAY:
 155       waddstr(w, "Playing:");
 156       break;
 157     case MPD_STATUS_STATE_PAUSE:
 158       wattron(w, A_BOLD);
 159       waddstr(w, "Paused:");
 160       wattroff(w, A_BOLD);
 161       break;
 162     default:
 163       waddstr(w, "Warning: Music Player Daemon in unknown state!");
 164       break;
 165     }
 166   x += 10;
 167
 168   if( IS_PLAYING(status->state) &&  song )
 169     {
 170       mvwaddstr(w, 0, x, mpc_get_song_name(song));
 171     }
 172
 173
 174   /* time */
 175   if( IS_PLAYING(status->state) )
 176     {
 177       x = screen->status_window.cols - strlen(screen->buf);
 178
 179       if( c->status->repeat )
 180         mvwaddstr(w, 0, x-3, "<R>");
 181       else
 182         mvwaddstr(w, 0, x-3, "   ");
 183
 184       snprintf(screen->buf, screen->buf_size,
 185                " [%i:%02i/%i:%02i] ",
 186                status->elapsedTime/60, status->elapsedTime%60,
 187                status->totalTime/60,   status->totalTime%60 );
 188       mvwaddstr(w, 0, x, screen->buf);
 189
 190     }
 191
 192
 193   wrefresh(w);
 194 }
 195
 196
 197
 198 int
 199 screen_exit(void)
 200 {
 201   endwin();
 202   if( screen )
 203     {
 204       screen->playlist = list_window_free(screen->playlist);
 205       screen->filelist = list_window_free(screen->filelist);
 206       screen->helplist = list_window_free(screen->helplist);
 207       free(screen->buf);
 208       free(screen->findbuf);
 209       free(screen);
 210       screen = NULL;
 211     }
 212   return 0;
 213 }
 214
 215 void
 216 screen_resized(int sig)
 217 {
 218   screen_exit();
 219   if( COLS<SCREEN_MIN_COLS || LINES<SCREEN_MIN_ROWS )
 220     {
 221       fprintf(stderr, "Error: Screen to small!\n");
 222       exit(EXIT_FAILURE);
 223     }
 224   screen_init();
 225 }
 226
 227 void
 228 screen_status_message(mpd_client_t *c, char *msg)
 229 {
 230   WINDOW *w = screen->status_window.w;
 231
 232   wmove(w, 0, 0);
 233   wclrtoeol(w);
 234   wattron(w, A_BOLD);
 235   waddstr(w, msg);
 236   wattroff(w, A_BOLD);
 237   wrefresh(w);
 238   screen->status_timestamp = time(NULL);
 239 }
 240
 241 void
 242 screen_status_printf(mpd_client_t *c, char *format, ...)
 243 {
 244   char buffer[STATUS_LINE_MAX_SIZE];
 245   va_list ap;
 246
 247   va_start(ap,format);
 248   vsnprintf(buffer,sizeof(buffer),format,ap);
 249   va_end(ap);
 250   screen_status_message(c, buffer);
 251 }
 252
 253 int
 254 screen_init(void)
 255 {
 256   /* initialize the curses library */
 257   initscr();
 258   start_color();
 259   use_default_colors();
 260   /* tell curses not to do NL->CR/NL on output */
 261   nonl();
 262   /* take input chars one at a time, no wait for \n */
 263   cbreak();
 264   /* don't echo input */
 265   noecho();
 266   /* set cursor invisible */
 267   curs_set(0);
 268   /* return from getch() without blocking */
 269   //  nodelay(stdscr, TRUE);
 270   keypad(stdscr, TRUE);
 271   timeout(100); /*void wtimeout(WINDOW *win, int delay);*/
 272
 273
 274   if( COLS<SCREEN_MIN_COLS || LINES<SCREEN_MIN_ROWS )
 275     {
 276       fprintf(stderr, "Error: Screen to small!\n");
 277       exit(EXIT_FAILURE);
 278     }
 279
 280   screen = malloc(sizeof(screen_t));
 281   memset(screen, 0, sizeof(screen_t));
 282   screen->mode = SCREEN_PLAY_WINDOW;
 283   screen->cols = COLS;
 284   screen->rows = LINES;
 285   screen->buf  = malloc(screen->cols);
 286   screen->buf_size = screen->cols;
 287   screen->findbuf = NULL;
 288   screen->painted = 0;
 289
 290   /* create top window */
 291   screen->top_window.rows = 2;
 292   screen->top_window.cols = screen->cols;
 293   screen->top_window.w = newwin(screen->top_window.rows,
 294                                   screen->top_window.cols,
 295                                   0, 0);
 296   leaveok(screen->top_window.w, TRUE);
 297   keypad(screen->top_window.w, TRUE);
 298
 299   /* create main window */
 300   screen->main_window.rows = screen->rows-4;
 301   screen->main_window.cols = screen->cols;
 302   screen->main_window.w = newwin(screen->main_window.rows,
 303                                  screen->main_window.cols,
 304                                  2,
 305                                  0);
 306   screen->playlist = list_window_init( screen->main_window.w,
 307                                        screen->main_window.cols,
 308                                        screen->main_window.rows );
 309   screen->filelist = list_window_init( screen->main_window.w,
 310                                        screen->main_window.cols,
 311                                        screen->main_window.rows );
 312   screen->helplist = list_window_init( screen->main_window.w,
 313                                        screen->main_window.cols,
 314                                        screen->main_window.rows );
 315   leaveok(screen->main_window.w, TRUE);
 316   keypad(screen->main_window.w, TRUE);
 317
 318   /* create progress window */
 319   screen->progress_window.rows = 1;
 320   screen->progress_window.cols = screen->cols;
 321   screen->progress_window.w = newwin(screen->progress_window.rows,
 322                                      screen->progress_window.cols,
 323                                      screen->rows-2,
 324                                      0);
 325   leaveok(screen->progress_window.w, TRUE);
 326
 327   /* create status window */
 328   screen->status_window.rows = 1;
 329   screen->status_window.cols = screen->cols;
 330   screen->status_window.w = newwin(screen->status_window.rows,
 331                                    screen->status_window.cols,
 332                                    screen->rows-1,
 333                                    0);
 334   leaveok(screen->status_window.w, FALSE);
 335   keypad(screen->status_window.w, TRUE);
 336
 337   return 0;
 338 }
 339
 340 void
 341 screen_paint(mpd_client_t *c)
 342 {
 343   switch(screen->mode)
 344     {
 345     case SCREEN_PLAY_WINDOW:
 346       paint_top_window(TOP_HEADER_PLAY, c->status->volume, 1);
 347       play_paint(screen, c);
 348       break;
 349     case SCREEN_FILE_WINDOW:
 350       paint_top_window(file_get_header(c), c->status->volume, 1);
 351       file_paint(screen, c);
 352       break;
 353     case SCREEN_SEARCH_WINDOW:
 354       paint_top_window(TOP_HEADER_SEARCH, c->status->volume, 1);
 355       search_paint(screen, c);
 356       break;
 357     case SCREEN_HELP_WINDOW:
 358       paint_top_window(TOP_HEADER_PLAY, c->status->volume, 1);
 359       help_paint(screen, c);
 360       break;
 361     }
 362
 363   paint_progress_window(c);
 364   paint_status_window(c);
 365   screen->painted = 1;
 366 }
 367
 368 void
 369 screen_update(mpd_client_t *c)
 370 {
 371   if( !screen->painted )
 372     return screen_paint(c);
 373
 374   switch(screen->mode)
 375     {
 376     case SCREEN_PLAY_WINDOW:
 377       paint_top_window(TOP_HEADER_PLAY, c->status->volume, 0);
 378       play_update(screen, c);
 379       break;
 380     case SCREEN_FILE_WINDOW:
 381       paint_top_window(file_get_header(c), c->status->volume, 0);
 382       file_update(screen, c);
 383       break;
 384     case SCREEN_SEARCH_WINDOW:
 385       paint_top_window(TOP_HEADER_SEARCH, c->status->volume, 0);
 386       search_update(screen, c);
 387       break;
 388     case SCREEN_HELP_WINDOW:
 389       paint_top_window(TOP_HEADER_HELP, c->status->volume, 0);
 390       help_update(screen, c);
 391       break;
 392     }
 393   paint_progress_window(c);
 394   paint_status_window(c);
 395 }
 396
 397 void
 398 screen_cmd(mpd_client_t *c, command_t cmd)
 399 {
 400   int n;
 401   char buf[256];
 402   screen_mode_t new_mode = screen->mode;
 403
 404   switch(screen->mode)
 405     {
 406     case SCREEN_PLAY_WINDOW:
 407       if( play_cmd(screen, c, cmd) )
 408         return;
 409       break;
 410     case SCREEN_FILE_WINDOW:
 411       if( file_cmd(screen, c, cmd) )
 412         return;
 413       break;
 414     case SCREEN_SEARCH_WINDOW:
 415       if( search_cmd(screen, c, cmd) )
 416         return;
 417       break;
 418     case SCREEN_HELP_WINDOW:
 419       if( help_cmd(screen, c, cmd) )
 420         return;
 421       break;
 422     }
 423
 424   switch(cmd)
 425     {
 426     case CMD_PLAY:
 427       mpd_sendPlayCommand(c->connection, screen->playlist->selected);
 428       mpd_finishCommand(c->connection);
 429       break;
 430     case CMD_PAUSE:
 431       mpd_sendPauseCommand(c->connection);
 432       mpd_finishCommand(c->connection);
 433       break;
 434     case CMD_STOP:
 435       mpd_sendStopCommand(c->connection);
 436       mpd_finishCommand(c->connection);
 437       break;
 438     case CMD_TRACK_NEXT:
 439       if( IS_PLAYING(c->status->state) )
 440         {
 441           mpd_sendNextCommand(c->connection);
 442           mpd_finishCommand(c->connection);
 443         }
 444       break;
 445     case CMD_TRACK_PREVIOUS:
 446       if( IS_PLAYING(c->status->state) )
 447         {
 448           mpd_sendPrevCommand(c->connection);
 449           mpd_finishCommand(c->connection);
 450         }
 451       break;
 452     case CMD_SHUFFLE:
 453       mpd_sendShuffleCommand(c->connection);
 454       mpd_finishCommand(c->connection);
 455       screen_status_message(c, "Shuffled playlist!");
 456       break;
 457     case CMD_CLEAR:
 458       mpd_sendClearCommand(c->connection);
 459       mpd_finishCommand(c->connection);
 460       file_clear_highlights(c);
 461       screen_status_message(c, "Cleared playlist!");
 462       break;
 463     case CMD_REPEAT:
 464       n = !c->status->repeat;
 465       mpd_sendRepeatCommand(c->connection, n);
 466       mpd_finishCommand(c->connection);
 467       snprintf(buf, 256, "Repeat is %s", n ? "On" : "Off");
 468       screen_status_message(c, buf);
 469       break;
 470     case CMD_RANDOM:
 471       n = !c->status->random;
 472       mpd_sendRandomCommand(c->connection, n);
 473       mpd_finishCommand(c->connection);
 474       snprintf(buf, 256, "Random is %s", n ? "On" : "Off");
 475       screen_status_message(c, buf);
 476       break;
 477     case CMD_VOLUME_UP:
 478       mpd_sendSetvolCommand(c->connection, 1);
 479       mpd_finishCommand(c->connection);
 480       if( c->status->volume!=MPD_STATUS_NO_VOLUME )
 481         {
 482           snprintf(buf, 256, "Volume %d%%", c->status->volume+1);
 483           screen_status_message(c, buf);
 484         }
 485       break;
 486     case CMD_VOLUME_DOWN:
 487       mpd_sendSetvolCommand(c->connection, -1);
 488       mpd_finishCommand(c->connection);
 489       if( c->status->volume!=MPD_STATUS_NO_VOLUME )
 490         {
 491           snprintf(buf, 256, "Volume %d%%", c->status->volume-1);
 492           screen_status_message(c, buf);
 493         }
 494       break;
 495     case CMD_SCREEN_PREVIOUS:
 496       if( screen->mode > SCREEN_PLAY_WINDOW )
 497         new_mode = screen->mode - 1;
 498       else
 499         new_mode = SCREEN_HELP_WINDOW-1;
 500       switch_screen_mode(new_mode, c);
 501       break;
 502     case CMD_SCREEN_NEXT:
 503       new_mode = screen->mode + 1;
 504       if( new_mode >= SCREEN_HELP_WINDOW )
 505         new_mode = SCREEN_PLAY_WINDOW;
 506       switch_screen_mode(new_mode, c);
 507       break;
 508     case CMD_SCREEN_PLAY:
 509       switch_screen_mode(SCREEN_PLAY_WINDOW, c);
 510       break;
 511     case CMD_SCREEN_FILE:
 512       switch_screen_mode(SCREEN_FILE_WINDOW, c);
 513       break;
 514     case CMD_SCREEN_SEARCH:
 515       switch_screen_mode(SCREEN_SEARCH_WINDOW, c);
 516       break;
 517     case CMD_SCREEN_HELP:
 518       switch_screen_mode(SCREEN_HELP_WINDOW, c);
 519       break;
 520     case CMD_QUIT:
 521       exit(EXIT_SUCCESS);
 522     case CMD_LIST_FIND:
 523     case CMD_LIST_FIND_NEXT:
 524     case CMD_NONE:
 525     case CMD_DELETE:
 526     case CMD_SELECT:
 527     case CMD_LIST_PREVIOUS:
 528     case CMD_LIST_NEXT:
 529     case CMD_LIST_FIRST:
 530     case CMD_LIST_LAST:
 531     case CMD_LIST_NEXT_PAGE:
 532     case CMD_LIST_PREVIOUS_PAGE:
 533       break;
 534     }
 535
 536 }
 537
 538