src/keyboard.c

   1 /* ncmpc (Ncurses MPD Client)
   2  * (c) 2004-2017 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 "keyboard.h"
  21 #include "command.h"
  22 #include "ncmpc.h"
  23 #include "ncmpc_curses.h"
  24 #include "screen.h"
  25 #include "Compiler.h"
  26
  27 #include <glib.h>
  28
  29 #include <unistd.h>
  30
  31 static bool
  32 ignore_key(int key)
  33 {
  34         return key == ERR || key == '\0';
  35 }
  36
  37 gcc_pure
  38 static command_t
  39 translate_key(int key)
  40 {
  41 #ifdef HAVE_GETMOUSE
  42         if (key == KEY_MOUSE)
  43                 return CMD_MOUSE_EVENT;
  44 #endif
  45
  46         return get_key_command(key);
  47 }
  48
  49 static gboolean
  50 keyboard_event(gcc_unused GIOChannel *source,
  51                gcc_unused GIOCondition condition,
  52                gcc_unused gpointer data)
  53 {
  54         int key = wgetch(screen.main_window.w);
  55         if (ignore_key(key))
  56                 return true;
  57
  58         command_t cmd = translate_key(key);
  59         if (cmd == CMD_NONE)
  60                 return true;
  61
  62         begin_input_event();
  63
  64         if (!do_input_event(cmd))
  65                 return FALSE;
  66
  67         end_input_event();
  68         return TRUE;
  69 }
  70
  71 void
  72 keyboard_init(void)
  73 {
  74         GIOChannel *channel = g_io_channel_unix_new(STDIN_FILENO);
  75         g_io_add_watch(channel, G_IO_IN, keyboard_event, NULL);
  76         g_io_channel_unref(channel);
  77 }
  78
  79 void
  80 keyboard_unread(int key)
  81 {
  82         if (ignore_key(key))
  83                 return;
  84
  85         command_t cmd = translate_key(key);
  86         if (cmd != CMD_NONE)
  87                 do_input_event(cmd);
  88 }