src/screen_outputs.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_outputs.h"
  21 #include "screen_interface.h"
  22 #include "screen_message.h"
  23 #include "paint.h"
  24 #include "i18n.h"
  25 #include "list_window.h"
  26 #include "mpdclient.h"
  27
  28 #include <mpd/client.h>
  29
  30 #include <glib.h>
  31 #include <assert.h>
  32
  33 static struct list_window *lw;
  34
  35 static GPtrArray *mpd_outputs = NULL;
  36
  37 static void
  38 outputs_paint(void);
  39
  40 static void
  41 outputs_repaint(void)
  42 {
  43         outputs_paint();
  44         wrefresh(lw->w);
  45 }
  46
  47 static bool
  48 toggle_output(struct mpdclient *c, unsigned int output_index)
  49 {
  50         struct mpd_connection *connection;
  51         struct mpd_output *output;
  52
  53         assert(mpd_outputs != NULL);
  54
  55         if (output_index >= mpd_outputs->len)
  56                 return false;
  57
  58         connection = mpdclient_get_connection(c);
  59         if (connection == NULL)
  60                 return false;
  61
  62         output = g_ptr_array_index(mpd_outputs, output_index);
  63
  64         if (!mpd_output_get_enabled(output)) {
  65                 if (!mpd_run_enable_output(connection,
  66                                            mpd_output_get_id(output))) {
  67                         mpdclient_handle_error(c);
  68                         return false;
  69                 }
  70
  71                 c->events |= MPD_IDLE_OUTPUT;
  72
  73                 screen_status_printf(_("Output '%s' enabled"),
  74                                      mpd_output_get_name(output));
  75         } else {
  76                 if (!mpd_run_disable_output(connection,
  77                                             mpd_output_get_id(output))) {
  78                         mpdclient_handle_error(c);
  79                         return false;
  80                 }
  81
  82                 c->events |= MPD_IDLE_OUTPUT;
  83
  84                 screen_status_printf(_("Output '%s' disabled"),
  85                                      mpd_output_get_name(output));
  86         }
  87
  88         return true;
  89 }
  90
  91 static void
  92 clear_output_element(gpointer data, G_GNUC_UNUSED gpointer user_data)
  93 {
  94         mpd_output_free(data);
  95 }
  96
  97 static void
  98 clear_outputs_list(void)
  99 {
 100         assert(mpd_outputs != NULL);
 101
 102         if (mpd_outputs->len <= 0)
 103                 return;
 104
 105         g_ptr_array_foreach(mpd_outputs, clear_output_element, NULL);
 106         g_ptr_array_remove_range(mpd_outputs, 0, mpd_outputs->len);
 107
 108         /* not updating the list_window length here, because that
 109            would clear the cursor position, and fill_outputs_list()
 110            will be called after this function anyway */
 111         /* list_window_set_length(lw, 0); */
 112 }
 113
 114 static void
 115 fill_outputs_list(struct mpdclient *c)
 116 {
 117         struct mpd_connection *connection;
 118         struct mpd_output *output;
 119
 120         assert(mpd_outputs != NULL);
 121
 122         connection = mpdclient_get_connection(c);
 123         if (connection == NULL) {
 124                 list_window_set_length(lw, 0);
 125                 return;
 126         }
 127
 128         mpd_send_outputs(connection);
 129         while ((output = mpd_recv_output(connection)) != NULL) {
 130                 g_ptr_array_add(mpd_outputs, output);
 131         }
 132
 133         if (!mpd_response_finish(connection))
 134                 mpdclient_handle_error(c);
 135
 136         list_window_set_length(lw, mpd_outputs->len);
 137 }
 138
 139 static void
 140 outputs_init(WINDOW *w, int cols, int rows)
 141 {
 142         lw = list_window_init(w, cols, rows);
 143
 144         mpd_outputs = g_ptr_array_new();
 145 }
 146
 147 static void
 148 outputs_resize(int cols, int rows)
 149 {
 150         list_window_resize(lw, cols, rows);
 151 }
 152
 153 static void
 154 outputs_exit(void)
 155 {
 156         list_window_free(lw);
 157
 158         g_ptr_array_free(mpd_outputs, TRUE);
 159 }
 160
 161 static void
 162 outputs_open(struct mpdclient *c)
 163 {
 164         fill_outputs_list(c);
 165 }
 166
 167 static void
 168 outputs_close(void)
 169 {
 170         clear_outputs_list();
 171 }
 172
 173 static const char *
 174 outputs_title(G_GNUC_UNUSED char *str, G_GNUC_UNUSED size_t size)
 175 {
 176         return _("Outputs");
 177 }
 178
 179 static void
 180 screen_outputs_paint_callback(WINDOW *w, unsigned i,
 181                               G_GNUC_UNUSED unsigned y, unsigned width,
 182                               bool selected, G_GNUC_UNUSED void *data)
 183 {
 184         const struct mpd_output *output;
 185
 186         assert(mpd_outputs != NULL);
 187         assert(i < mpd_outputs->len);
 188
 189         output = g_ptr_array_index(mpd_outputs, i);
 190
 191         row_color(w, COLOR_LIST, selected);
 192         waddstr(w, mpd_output_get_enabled(output) ? "[X] " : "[ ] ");
 193         waddstr(w, mpd_output_get_name(output));
 194         row_clear_to_eol(w, width, selected);
 195 }
 196
 197 static void
 198 outputs_paint(void)
 199 {
 200         list_window_paint2(lw, screen_outputs_paint_callback, NULL);
 201 }
 202
 203 static void
 204 screen_outputs_update(struct mpdclient *c)
 205 {
 206         if (c->events & MPD_IDLE_OUTPUT) {
 207                 clear_outputs_list();
 208                 fill_outputs_list(c);
 209                 outputs_repaint();
 210         }
 211 }
 212
 213 static bool
 214 outputs_cmd(struct mpdclient *c, command_t cmd)
 215 {
 216         assert(mpd_outputs != NULL);
 217
 218         if (list_window_cmd(lw, cmd)) {
 219                 outputs_repaint();
 220                 return true;
 221         }
 222
 223         switch (cmd) {
 224         case CMD_PLAY:
 225                 toggle_output(c, lw->selected);
 226                 return true;
 227
 228         case CMD_SCREEN_UPDATE:
 229                 clear_outputs_list();
 230                 fill_outputs_list(c);
 231                 outputs_repaint();
 232                 return true;
 233
 234         default:
 235                 break;
 236         }
 237
 238         return false;
 239 }
 240
 241 const struct screen_functions screen_outputs = {
 242         .init      = outputs_init,
 243         .exit      = outputs_exit,
 244         .open      = outputs_open,
 245         .close     = outputs_close,
 246         .resize    = outputs_resize,
 247         .paint     = outputs_paint,
 248         .update    = screen_outputs_update,
 249         .cmd       = outputs_cmd,
 250         .get_title = outputs_title,
 251 };