1 /*
2
3 /usr/src/ext2ed/win.c
4
5 A part of the extended file system 2 disk editor.
6
7 --------------------------------------------------------
8 Window management - Interfacing with the ncurses library
9 --------------------------------------------------------
10
11 First written on: April 17 1995
12 Modified on : April 05 2001 Christian.Bac@int-evry.fr
13 it looks like readline does not like that initscr decides to set the tty to
14 noecho.
15
16 Copyright (C) 1995 Gadi Oxman
17
18 */
19
20 #include <stdio.h>
21 #include <stdlib.h>
22 #include <string.h>
23 #include <termios.h>
24 #include <unistd.h>
25 #include <sys/ioctl.h>
26
27 #include "ext2ed.h"
28 #include "../version.h"
29
30 struct struct_pad_info show_pad_info;
31 WINDOW *title_win,*show_win,*command_win,*mt_win1,*mt_win2,*show_pad;
32
33 /* to remember configuration after initscr
34 * and modify it
35 */
36 struct termios termioInit, termioCurrent;
37
draw_title_win(void)38 void draw_title_win (void)
39 {
40 char title_string [128];
41
42 werase(title_win);
43 box (title_win,0,0);
44 sprintf (title_string,"EXT2ED - Extended-2 File System editor ver %s (%s)", E2FSPROGS_VERSION, E2FSPROGS_DATE);
45 wmove (title_win,TITLE_WIN_LINES/2,(COLS-strlen (title_string))/2);
46 wprintw (title_win,title_string);
47 wrefresh(title_win);
48 }
49
setup_show_win(void)50 void setup_show_win(void)
51 {
52 wbkgdset (show_win,A_REVERSE);werase (show_win);
53 show_pad_info.line=0;
54 show_pad_info.col=0;
55 show_pad_info.display_lines=LINES-TITLE_WIN_LINES-SHOW_WIN_LINES-COMMAND_WIN_LINES-2;
56 show_pad_info.display_cols=COLS;
57 show_pad_info.max_line=show_pad_info.display_lines-1;show_pad_info.max_col=show_pad_info.display_cols-1;
58 show_pad_info.disable_output=0;
59 }
60
init_windows(void)61 void init_windows (void)
62 {
63 initscr ();
64 tcgetattr(0,&termioInit); /* save initial config */
65 termioCurrent = termioInit;
66 termioCurrent.c_lflag |= ECHO; /* set echo on */
67 tcsetattr(0,TCSANOW,&termioCurrent);
68
69 if (LINES<TITLE_WIN_LINES+SHOW_WIN_LINES+COMMAND_WIN_LINES+3) {
70 printf ("Sorry, your terminal screen is too small\n");
71 printf ("Error - Can not initialize windows\n");
72 exit (1);
73 }
74
75 title_win=newwin (TITLE_WIN_LINES,COLS,0,0);
76 show_win=newwin (SHOW_WIN_LINES,COLS,TITLE_WIN_LINES,0);
77 show_pad=newpad (SHOW_PAD_LINES,SHOW_PAD_COLS);
78 mt_win1=newwin (1,COLS,TITLE_WIN_LINES+SHOW_WIN_LINES,0);
79 mt_win2=newwin (1,COLS,LINES-COMMAND_WIN_LINES-1,0);
80 command_win=newwin (COMMAND_WIN_LINES,COLS,LINES-COMMAND_WIN_LINES,0);
81
82 if (title_win==NULL || show_win==NULL || show_pad==NULL || command_win==NULL) {
83 printf ("Error - Not enough memory - Can not initialize windows\n");exit (1);
84 }
85
86 draw_title_win();
87
88 setup_show_win();
89
90 scrollok (command_win,TRUE);
91
92 refresh_title_win ();
93 refresh_show_win ();
94 refresh_show_pad();
95 refresh_command_win ();
96 wrefresh(mt_win1);
97 wrefresh(mt_win2);
98 }
99
refresh_title_win(void)100 void refresh_title_win (void)
101 {
102 wrefresh (title_win);
103 }
104
refresh_show_win(void)105 void refresh_show_win (void)
106 {
107 int current_page,total_pages;
108
109 current_page=show_pad_info.line/show_pad_info.display_lines+1;
110 if (show_pad_info.line%show_pad_info.display_lines)
111 current_page++;
112 total_pages=show_pad_info.max_line/show_pad_info.display_lines+1;
113
114 wmove (show_win,2,COLS-18);
115 wprintw (show_win,"Page %d of %d\n",current_page,total_pages);
116
117 wmove (show_win,2,COLS-18);
118 wrefresh (show_win);
119 }
120
121
refresh_show_pad(void)122 void refresh_show_pad (void)
123
124 {
125 int left,top,right,bottom,i;
126
127 if (show_pad_info.disable_output)
128 return;
129
130 if (show_pad_info.max_line < show_pad_info.display_lines-1) {
131 for (i=show_pad_info.max_line+1;i<show_pad_info.display_lines;i++) {
132 wmove (show_pad,i,0);wprintw (show_pad,"\n");
133 }
134 }
135 left=0;right=show_pad_info.display_cols-1;
136 top=TITLE_WIN_LINES+SHOW_WIN_LINES+1;bottom=top+show_pad_info.display_lines-1;
137
138 if (show_pad_info.line > show_pad_info.max_line-show_pad_info.display_lines+1)
139 show_pad_info.line=show_pad_info.max_line-show_pad_info.display_lines+1;
140
141 if (show_pad_info.line < 0)
142 show_pad_info.line=0;
143
144 #ifdef OLD_NCURSES
145 prefresh (show_pad,show_pad_info.line,show_pad_info.col,top,left,show_pad_info.display_lines-1,show_pad_info.display_cols-1);
146 #else
147 prefresh (show_pad,show_pad_info.line,show_pad_info.col,top,left,top+show_pad_info.display_lines-1,left+show_pad_info.display_cols-1);
148 #endif
149 }
150
refresh_command_win(void)151 void refresh_command_win (void)
152 {
153 wrefresh (command_win);
154 }
155
close_windows(void)156 void close_windows (void)
157 {
158 // echo ();
159 tcsetattr(0,TCSANOW,&termioInit);
160
161 delwin (title_win);
162 delwin (command_win);
163 delwin (show_win);
164 delwin (show_pad);
165
166 endwin ();
167 }
168
show_info(void)169 void show_info (void)
170 {
171 int block_num,block_offset;
172
173 block_num=device_offset/file_system_info.block_size;
174 block_offset=device_offset%file_system_info.block_size;
175
176 wmove (show_win,0,0);
177 wprintw (show_win,"Offset %-3ld in block %ld. ",block_offset,block_num);
178 if (current_type != NULL)
179 wprintw (show_win,"Type: %s\n",current_type->name);
180 else
181 wprintw (show_win,"Type: %s\n","none");
182
183 refresh_show_win ();
184 }
185
186
redraw_all(void)187 void redraw_all (void)
188 {
189 int min_lines = TITLE_WIN_LINES+SHOW_WIN_LINES+COMMAND_WIN_LINES+3;
190 struct winsize ws;
191 int save_col, save_lines;
192
193 /* get the size of the terminal connected to stdout */
194 ioctl(1, TIOCGWINSZ, &ws);
195 /*
196 * Do it again because GDB doesn't stop before the first ioctl
197 * call, we want an up-to-date size when we're
198 * single-stepping.
199 */
200 if (ioctl(1, TIOCGWINSZ, &ws) == 0) {
201 if (ws.ws_row < min_lines)
202 ws.ws_row = min_lines;
203 if ((ws.ws_row != LINES) || (ws.ws_col != COLS)) {
204 wmove (show_win,2,COLS-18);
205 wclrtoeol(show_win);
206 wrefresh(show_win);
207 resizeterm(ws.ws_row, ws.ws_col);
208 wresize(title_win, TITLE_WIN_LINES,COLS);
209 wresize(show_win, SHOW_WIN_LINES,COLS);
210 wresize(command_win, COMMAND_WIN_LINES,COLS);
211 wresize(mt_win1, 1,COLS);
212 wresize(mt_win2, 1,COLS);
213 mvwin(mt_win2, LINES-COMMAND_WIN_LINES-1,0);
214 mvwin(command_win, LINES-COMMAND_WIN_LINES,0);
215 draw_title_win();
216 show_pad_info.display_lines=LINES-TITLE_WIN_LINES-SHOW_WIN_LINES-COMMAND_WIN_LINES-2;
217 show_pad_info.display_cols=COLS;
218 }
219 }
220 clearok(title_win, 1);
221 clearok(show_win, 1);
222 clearok(command_win, 1);
223 clearok(mt_win1, 1);
224 clearok(mt_win2, 1);
225 wrefresh(mt_win1);
226 wrefresh(mt_win2);
227 refresh_show_pad();
228 refresh_show_win();
229 refresh_title_win ();
230 refresh_command_win ();
231 }
232