Code

screen_*: eliminate redundant wrefresh() calls
[ncmpc.git] / 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  */
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"
28 #include <mpd/client.h>
30 #include <glib.h>
31 #include <assert.h>
33 static struct list_window *lw;
35 static GPtrArray *mpd_outputs = NULL;
37 static bool
38 toggle_output(struct mpdclient *c, unsigned int output_index)
39 {
40         assert(mpd_outputs != NULL);
42         if (output_index >= mpd_outputs->len)
43                 return false;
45         struct mpd_connection *connection = mpdclient_get_connection(c);
46         if (connection == NULL)
47                 return false;
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                 }
58                 c->events |= MPD_IDLE_OUTPUT;
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                 }
69                 c->events |= MPD_IDLE_OUTPUT;
71                 screen_status_printf(_("Output '%s' disabled"),
72                                      mpd_output_get_name(output));
73         }
75         return true;
76 }
78 static void
79 clear_output_element(gpointer data, gcc_unused gpointer user_data)
80 {
81         mpd_output_free(data);
82 }
84 static void
85 clear_outputs_list(void)
86 {
87         assert(mpd_outputs != NULL);
89         if (mpd_outputs->len <= 0)
90                 return;
92         g_ptr_array_foreach(mpd_outputs, clear_output_element, NULL);
93         g_ptr_array_remove_range(mpd_outputs, 0, mpd_outputs->len);
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 }
101 static void
102 fill_outputs_list(struct mpdclient *c)
104         assert(mpd_outputs != NULL);
106         struct mpd_connection *connection = mpdclient_get_connection(c);
107         if (connection == NULL) {
108                 list_window_set_length(lw, 0);
109                 return;
110         }
112         mpd_send_outputs(connection);
114         struct mpd_output *output;
115         while ((output = mpd_recv_output(connection)) != NULL) {
116                 g_ptr_array_add(mpd_outputs, output);
117         }
119         mpdclient_finish_command(c);
121         list_window_set_length(lw, mpd_outputs->len);
124 static void
125 outputs_init(WINDOW *w, int cols, int rows)
127         lw = list_window_init(w, cols, rows);
129         mpd_outputs = g_ptr_array_new();
132 static void
133 outputs_resize(int cols, int rows)
135         list_window_resize(lw, cols, rows);
138 static void
139 outputs_exit(void)
141         list_window_free(lw);
143         g_ptr_array_free(mpd_outputs, TRUE);
146 static void
147 outputs_open(struct mpdclient *c)
149         fill_outputs_list(c);
152 static void
153 outputs_close(void)
155         clear_outputs_list();
158 static const char *
159 outputs_title(gcc_unused char *str, gcc_unused size_t size)
161         return _("Outputs");
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)
169         const struct mpd_output *output;
171         assert(mpd_outputs != NULL);
172         assert(i < mpd_outputs->len);
174         output = g_ptr_array_index(mpd_outputs, i);
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);
182 static void
183 outputs_paint(void)
185         list_window_paint2(lw, screen_outputs_paint_callback, NULL);
188 static void
189 screen_outputs_update(struct mpdclient *c)
191         if (c->events & MPD_IDLE_OUTPUT) {
192                 clear_outputs_list();
193                 fill_outputs_list(c);
194                 outputs_paint();
195         }
198 static bool
199 outputs_cmd(struct mpdclient *c, command_t cmd)
201         assert(mpd_outputs != NULL);
203         if (list_window_cmd(lw, cmd)) {
204                 outputs_paint();
205                 return true;
206         }
208         switch (cmd) {
209         case CMD_PLAY:
210                 toggle_output(c, lw->selected);
211                 return true;
213         case CMD_SCREEN_UPDATE:
214                 clear_outputs_list();
215                 fill_outputs_list(c);
216                 outputs_paint();
217                 return true;
219         default:
220                 break;
221         }
223         return false;
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 };