2 * Copyright (C) 2013 IBM Corporation
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; version 2 of the License.
8 * This program is distributed in the hope that it will be useful,
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 * GNU General Public License for more details.
13 * You should have received a copy of the GNU General Public License
14 * along with this program; if not, write to the Free Software
15 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
18 #if defined(HAVE_CONFIG_H)
24 #include <talloc/talloc.h>
25 #include <types/types.h>
27 #include <util/util.h>
30 #include "nc-textscreen.h"
32 struct text_screen *text_screen_from_scr(struct nc_scr *scr)
34 struct text_screen *text_screen;
35 assert(scr->sig == pb_text_screen_sig);
36 text_screen = container_of(scr, struct text_screen, scr);
40 void text_screen_draw(struct text_screen *screen)
44 max_y = getmaxy(screen->scr.sub_ncw);
46 max_y = min(max_y, screen->scroll_y + screen->n_lines);
48 for (i = screen->scroll_y; i < max_y; i++)
49 mvwaddstr(screen->scr.sub_ncw, i, 1, screen->lines[i]);
51 wrefresh(screen->scr.sub_ncw);
54 static void text_screen_scroll(struct text_screen *screen, int key)
56 int win_lines = getmaxy(screen->scr.sub_ncw);
61 else if (key == KEY_DOWN)
66 if (screen->scroll_y + delta < 0)
68 if (screen->scroll_y + delta + win_lines > screen->n_lines)
71 screen->scroll_y += delta;
72 wscrl(screen->scr.sub_ncw, delta);
75 mvwaddstr(screen->scr.sub_ncw, win_lines - 1, 1,
76 screen->lines[screen->scroll_y+win_lines-1]);
77 } else if (delta < 0) {
78 mvwaddstr(screen->scr.sub_ncw, 0, 1,
79 screen->lines[screen->scroll_y]);
82 wrefresh(screen->scr.sub_ncw);
85 void text_screen_clear(struct text_screen *screen)
87 talloc_free(screen->lines);
89 screen->n_alloc_lines = 16;
90 screen->lines = talloc_array(screen, char *, screen->n_alloc_lines);
93 void text_screen_append_line(struct text_screen *screen, const char *fmt, ...)
100 line = talloc_vasprintf(screen->lines, fmt, ap);
106 if (screen->n_lines == screen->n_alloc_lines) {
107 screen->n_alloc_lines *= 2;
108 screen->lines = talloc_realloc(screen, screen->lines,
109 char *, screen->n_alloc_lines);
112 screen->lines[screen->n_lines] = line;
117 void text_screen_process_key(struct nc_scr *scr, int key)
119 struct text_screen *screen = text_screen_from_scr(scr);
123 screen->on_exit(screen->cui);
127 text_screen_scroll(screen, key);
134 static void text_screen_resize(struct nc_scr *scr)
136 struct text_screen *screen = text_screen_from_scr(scr);
137 text_screen_draw(screen);
140 struct nc_scr *text_screen_scr(struct text_screen *screen)
145 static int text_screen_post(struct nc_scr *scr)
147 nc_scr_frame_draw(scr);
148 redrawwin(scr->main_ncw);
149 wrefresh(scr->main_ncw);
153 void text_screen_init(struct text_screen *screen, struct cui *cui,
154 const char *title, void (*on_exit)(struct cui *))
156 nc_scr_init(&screen->scr, pb_text_screen_sig, 0,
157 cui, text_screen_process_key,
158 text_screen_post, NULL, text_screen_resize);
161 screen->on_exit = on_exit;
163 screen->scr.frame.ltitle = talloc_strdup(screen, title);
164 screen->scr.frame.rtitle = NULL;
165 screen->scr.frame.help = "x=exit";
166 scrollok(screen->scr.sub_ncw, true);