ext2ed/win.c

   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
  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
  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
  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
 100 void refresh_title_win (void)
 101 {
 102         wrefresh (title_win);
 103 }
 104
 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
 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
 151 void refresh_command_win (void)
 152 {
 153         wrefresh (command_win);
 154 }
 155
 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
 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
 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 }