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