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