1 /*
2 * $Id$
3 *
4 * (c) 2004 by Kalle Wallin <kaw@linux.se>
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
10 *
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
18 *
19 */
21 #include <stdlib.h>
22 #include <string.h>
23 #include <glib.h>
24 #include <ncurses.h>
26 #include "config.h"
27 #include "ncmpc.h"
28 #include "mpdclient.h"
29 #include "command.h"
30 #include "screen.h"
31 #include "screen_utils.h"
34 typedef struct
35 {
36 signed char highlight;
37 command_t command;
38 char *text;
39 } help_text_row_t;
41 static help_text_row_t help_text[] =
42 {
43 { 1, CMD_NONE, N_("Keys - Movement") },
44 { 2, CMD_NONE, NULL },
45 { 0, CMD_LIST_PREVIOUS, NULL },
46 { 0, CMD_LIST_NEXT, NULL },
47 { 0, CMD_LIST_PREVIOUS_PAGE, NULL },
48 { 0, CMD_LIST_NEXT_PAGE, NULL },
49 { 0, CMD_LIST_FIRST, NULL },
50 { 0, CMD_LIST_LAST, NULL },
51 { 0, CMD_NONE, NULL },
52 { 0, CMD_SCREEN_NEXT, NULL },
53 { 0, CMD_SCREEN_HELP, NULL },
54 { 0, CMD_SCREEN_PLAY, NULL },
55 { 0, CMD_SCREEN_FILE, NULL },
56 #ifdef ENABLE_SEARCH_SCREEN
57 { 0, CMD_SCREEN_SEARCH, NULL },
58 #endif
59 #ifdef ENABLE_CLOCK_SCREEN
60 { 0, CMD_SCREEN_CLOCK, NULL },
61 #endif
62 #ifdef ENABLE_KEYDEF_SCREEN
63 { 0, CMD_SCREEN_KEYDEF, NULL },
64 #endif
66 { 0, CMD_NONE, NULL },
67 { 0, CMD_NONE, NULL },
68 { 1, CMD_NONE, N_("Keys - Global") },
69 { 2, CMD_NONE, NULL },
70 { 0, CMD_STOP, NULL },
71 { 0, CMD_PAUSE, NULL },
72 { 0, CMD_TRACK_NEXT, NULL },
73 { 0, CMD_TRACK_PREVIOUS, NULL },
74 { 0, CMD_SEEK_FORWARD, NULL },
75 { 0, CMD_SEEK_BACKWARD, NULL },
76 { 0, CMD_VOLUME_DOWN, NULL },
77 { 0, CMD_VOLUME_UP, NULL },
78 { 0, CMD_NONE, NULL },
79 { 0, CMD_REPEAT, NULL },
80 { 0, CMD_RANDOM, NULL },
81 { 0, CMD_CROSSFADE, NULL },
82 { 0, CMD_SHUFFLE, NULL },
83 { 0, CMD_DB_UPDATE, NULL },
84 { 0, CMD_NONE, NULL },
85 { 0, CMD_LIST_FIND, NULL },
86 { 0, CMD_LIST_RFIND, NULL },
87 { 0, CMD_LIST_FIND_NEXT, NULL },
88 { 0, CMD_LIST_RFIND_NEXT, NULL },
89 { 0, CMD_TOGGLE_FIND_WRAP, NULL },
90 { 0, CMD_NONE, NULL },
91 { 0, CMD_QUIT, NULL },
93 { 0, CMD_NONE, NULL },
94 { 0, CMD_NONE, NULL },
95 { 1, CMD_NONE, N_("Keys - Playlist screen") },
96 { 2, CMD_NONE, NULL },
97 { 0, CMD_PLAY, N_("Play") },
98 { 0, CMD_DELETE, NULL },
99 { 0, CMD_CLEAR, NULL },
100 { 0, CMD_LIST_MOVE_UP, N_("Move song up") },
101 { 0, CMD_LIST_MOVE_DOWN, N_("Move song down") },
102 { 0, CMD_ADD, NULL },
103 { 0, CMD_SAVE_PLAYLIST, NULL },
104 { 0, CMD_SCREEN_UPDATE, N_("Center") },
105 { 0, CMD_TOGGLE_AUTOCENTER, NULL },
107 { 0, CMD_NONE, NULL },
108 { 0, CMD_NONE, NULL },
109 { 1, CMD_NONE, N_("Keys - Browse screen") },
110 { 2, CMD_NONE, NULL },
111 { 0, CMD_PLAY, N_("Enter directory/Select and play song") },
112 { 0, CMD_SELECT, NULL },
113 { 0, CMD_DELETE, N_("Delete playlist") },
114 { 0, CMD_SCREEN_UPDATE, NULL },
116 #ifdef ENABLE_SEARCH_SCREEN
117 { 0, CMD_NONE, NULL },
118 { 0, CMD_NONE, NULL },
119 { 1, CMD_NONE, N_("Keys - Search screen") },
120 { 2, CMD_NONE, NULL },
121 { 0, CMD_SCREEN_SEARCH, N_("Search") },
122 { 0, CMD_PLAY, N_("Select and play") },
123 { 0, CMD_SELECT, NULL },
124 { 0, CMD_SEARCH_MODE, NULL },
125 #endif
127 { 0, CMD_NONE, NULL },
128 {-1, CMD_NONE, NULL }
129 };
131 static int help_text_rows = -1;
132 static list_window_t *lw = NULL;
135 static char *
136 list_callback(int index, int *highlight, void *data)
137 {
138 static char buf[512];
140 if( help_text_rows<0 )
141 {
142 help_text_rows = 0;
143 while( help_text[help_text_rows].highlight != -1 )
144 help_text_rows++;
145 }
147 *highlight = 0;
148 if( index<help_text_rows )
149 {
150 *highlight = help_text[index].highlight > 0;
151 if( help_text[index].command == CMD_NONE )
152 {
153 if( help_text[index].text )
154 g_snprintf(buf, sizeof(buf), " %s", _(help_text[index].text));
155 else
156 if( help_text[index].highlight == 2 )
157 {
158 int i;
160 for(i=3; i<COLS-3 && i<sizeof(buf); i++)
161 buf[i]='-';
162 buf[i] = '\0';
163 }
164 else
165 g_strlcpy(buf, " ", sizeof(buf));
166 return buf;
167 }
168 if( help_text[index].text )
169 g_snprintf(buf, sizeof(buf),
170 "%20s : %s ",
171 get_key_names(help_text[index].command, TRUE),
172 _(help_text[index].text));
173 else
174 g_snprintf(buf, sizeof(buf),
175 "%20s : %s ",
176 get_key_names(help_text[index].command, TRUE),
177 get_key_description(help_text[index].command));
178 return buf;
179 }
181 return NULL;
182 }
184 static void
185 help_init(WINDOW *w, int cols, int rows)
186 {
187 lw = list_window_init(w, cols, rows);
188 lw->flags = LW_HIDE_CURSOR;
189 }
191 static void
192 help_resize(int cols, int rows)
193 {
194 lw->cols = cols;
195 lw->rows = rows;
196 }
198 static void
199 help_exit(void)
200 {
201 list_window_free(lw);
202 }
205 static char *
206 help_title(char *str, size_t size)
207 {
208 return _("Help");
209 }
211 static void
212 help_paint(screen_t *screen, mpdclient_t *c)
213 {
214 lw->clear = 1;
215 list_window_paint(lw, list_callback, NULL);
216 wrefresh(lw->w);
217 }
219 static void
220 help_update(screen_t *screen, mpdclient_t *c)
221 {
222 if( lw->repaint )
223 {
224 list_window_paint(lw, list_callback, NULL);
225 wrefresh(lw->w);
226 lw->repaint = 0;
227 }
228 }
231 static int
232 help_cmd(screen_t *screen, mpdclient_t *c, command_t cmd)
233 {
234 lw->repaint=1;
235 switch(cmd)
236 {
237 case CMD_LIST_NEXT:
238 if( lw->start+lw->rows < help_text_rows )
239 lw->start++;
240 return 1;
241 case CMD_LIST_PREVIOUS:
242 if( lw->start >0 )
243 lw->start--;
244 return 1;
245 case CMD_LIST_FIRST:
246 lw->start = 0;
247 return 1;
248 case CMD_LIST_LAST:
249 lw->start = help_text_rows-lw->rows;
250 if( lw->start<0 )
251 lw->start = 0;
252 return 1;
253 case CMD_LIST_NEXT_PAGE:
254 lw->start = lw->start + lw->rows;
255 if( lw->start+lw->rows >= help_text_rows )
256 lw->start = help_text_rows-lw->rows;
257 if( lw->start<0 )
258 lw->start = 0;
259 return 1;
260 case CMD_LIST_PREVIOUS_PAGE:
261 lw->start = lw->start - lw->rows;
262 if( lw->start<0 )
263 lw->start = 0;
264 return 1;
265 default:
266 break;
267 }
269 lw->selected = lw->start+lw->rows;
270 if( screen_find(screen, c,
271 lw, help_text_rows,
272 cmd, list_callback, NULL) )
273 {
274 /* center the row */
275 lw->start = lw->selected-(lw->rows/2);
276 if( lw->start+lw->rows > help_text_rows )
277 lw->start = help_text_rows-lw->rows;
278 if( lw->start<0 )
279 lw->start=0;
280 return 1;
281 }
283 return 0;
284 }
286 static list_window_t *
287 help_lw(void)
288 {
289 return lw;
290 }
292 screen_functions_t *
293 get_screen_help(void)
294 {
295 static screen_functions_t functions;
297 memset(&functions, 0, sizeof(screen_functions_t));
298 functions.init = help_init;
299 functions.exit = help_exit;
300 functions.open = NULL;
301 functions.close = NULL;
302 functions.resize = help_resize;
303 functions.paint = help_paint;
304 functions.update = help_update;
305 functions.cmd = help_cmd;
306 functions.get_lw = help_lw;
307 functions.get_title = help_title;
309 return &functions;
310 }