1/* 2 3/usr/src/ext2ed/win.c 4 5A part of the extended file system 2 disk editor. 6 7-------------------------------------------------------- 8Window management - Interfacing with the ncurses library 9-------------------------------------------------------- 10 11First written on: April 17 1995 12Modified on : April 05 2001 Christian.Bac@int-evry.fr 13it looks like readline does not like that initscr decides to set the tty to 14noecho. 15 16Copyright (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 30struct struct_pad_info show_pad_info; 31WINDOW *title_win,*show_win,*command_win,*mt_win1,*mt_win2,*show_pad; 32 33/* to remember configuration after initscr 34 * and modify it 35 */ 36struct termios termioInit, termioCurrent; 37 38void 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 50void 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 61void 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 100void refresh_title_win (void) 101{ 102 wrefresh (title_win); 103} 104 105void 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 122void 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 151void refresh_command_win (void) 152{ 153 wrefresh (command_win); 154} 155 156void 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 169void 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 187void 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