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