Annotation of embedaddon/trafshow/screen.c, revision 1.1
1.1 ! misho 1: /*
! 2: * Copyright (c) 2004 Rinet Corp., Novosibirsk, Russia
! 3: *
! 4: * Redistribution and use in source forms, with and without modification,
! 5: * are permitted provided that this entire comment appears intact.
! 6: *
! 7: * THIS SOURCE CODE IS PROVIDED ``AS IS'' WITHOUT ANY WARRANTIES OF ANY KIND.
! 8: */
! 9:
! 10: #ifdef HAVE_CONFIG_H
! 11: #include <config.h>
! 12: #endif
! 13:
! 14: #ifdef HAVE_SLCURSES
! 15: #include <slcurses.h>
! 16: #elif HAVE_NCURSES
! 17: #include <ncurses.h>
! 18: #else
! 19: #include <curses.h>
! 20: #endif
! 21: #include <sys/types.h>
! 22: #include <sys/ioctl.h>
! 23: #ifdef HAVE_SYS_TERMIOS_H
! 24: #include <sys/termios.h>
! 25: #endif
! 26: #include <fcntl.h>
! 27: #include <stdio.h>
! 28: #include <stdlib.h>
! 29: #include <string.h>
! 30: #include <unistd.h>
! 31: #include <stdarg.h>
! 32:
! 33: #include "screen.h"
! 34: #include "colormask.h"
! 35:
! 36: #ifndef TIOCGWINSZ
! 37: #define TIOCGWINSZ 104
! 38: #endif
! 39:
! 40: int use_colors = 0;
! 41: int prompt_mode = 0;
! 42: double line_factor = 1;
! 43:
! 44:
! 45: /*
! 46: * Initialize curses.
! 47: */
! 48: int
! 49: screen_open(resize)
! 50: int resize;
! 51: {
! 52: if (!resize) {
! 53: if (initscr() == (WINDOW *)ERR) {
! 54: fprintf(stderr, "Can't initialize terminal -- unknown terminal type?\n");
! 55: return -1;
! 56: }
! 57: #ifdef HAVE_HAS_COLORS
! 58: use_colors = has_colors();
! 59: #ifdef HAVE_SLCURSES
! 60: SLtt_Use_Ansi_Colors = 1; /* force color mode */
! 61: use_colors = 1;
! 62: #endif
! 63: if (use_colors) {
! 64: start_color();
! 65: if (init_colormask() < 0) {
! 66: endwin();
! 67: return -1;
! 68: }
! 69: }
! 70: #endif /* HAVE_HAS_COLORS */
! 71: cbreak();
! 72: noecho();
! 73: nonl();
! 74:
! 75: } else { /* resize terminal */
! 76: int fd, new_rows = 0, new_cols = 0;
! 77: struct winsize ws;
! 78: char *cp;
! 79:
! 80: if ((fd = open("/dev/tty", 0)) != -1) {
! 81: if (ioctl(fd, TIOCGWINSZ, &ws) != -1) {
! 82: new_rows = ws.ws_row;
! 83: new_cols = ws.ws_col;
! 84: }
! 85: close(fd);
! 86: }
! 87: if (!new_rows) {
! 88: if ((cp = getenv("LINES")) != NULL)
! 89: new_rows = atoi(cp);
! 90: else new_rows = DEFAULT_LINES;
! 91: }
! 92: if (!new_cols) {
! 93: if ((cp = getenv("COLUMNS")) != NULL)
! 94: new_cols = atoi(cp);
! 95: else new_cols = DEFAULT_COLUMNS;
! 96: }
! 97: #ifdef HAVE_RESIZETERM
! 98: resizeterm(new_rows, new_cols);
! 99: #elif HAVE_SLCURSES
! 100: SLtt_Screen_Rows = new_rows;
! 101: SLtt_Screen_Cols = new_cols;
! 102: SLcurses_delwin(stdscr);
! 103: SLsmg_reset_smg();
! 104: SLsmg_init_smg();
! 105: stdscr = SLcurses_newwin(0, 0, 0, 0);
! 106: #else /* assume it work on all curses */
! 107: endwin();
! 108: initscr();
! 109: cbreak();
! 110: noecho();
! 111: nonl();
! 112: #endif
! 113: }
! 114: clear();
! 115:
! 116: prompt_mode = 0;
! 117: screen_dock_cursor(LINES-1, COLS-1);
! 118:
! 119: if (LINES < MINPAGESIZE) {
! 120: screen_status("Too small LINES (%d) on screen", LINES);
! 121: return -1;
! 122: }
! 123: if (COLS < MINPAGESIZE * 2) {
! 124: screen_status("Too small COLUMNS (%d) on screen", COLS);
! 125: return -1;
! 126: }
! 127:
! 128: line_factor = (double)COLS / (double)DEFAULT_COLUMNS;
! 129: return 0;
! 130: }
! 131:
! 132: /*
! 133: * Return terminal original settings.
! 134: */
! 135: void
! 136: screen_close()
! 137: {
! 138: attrset(A_NORMAL);
! 139: move(LINES-1, 0);
! 140: clrtoeol();
! 141: refresh();
! 142: endwin();
! 143: }
! 144:
! 145: void
! 146: screen_clear()
! 147: {
! 148: attrset(A_NORMAL);
! 149: clear();
! 150: refresh();
! 151: }
! 152:
! 153: static int curs_dock_x = 0, curs_dock_y = 0;
! 154:
! 155: void
! 156: screen_update()
! 157: {
! 158: move(curs_dock_y, curs_dock_x);
! 159: refresh();
! 160: }
! 161:
! 162: void
! 163: screen_dock_cursor(y, x)
! 164: int y, x;
! 165: {
! 166: curs_dock_x = x ? x : COLS - 1;
! 167: curs_dock_y = y ? y : LINES - 1;
! 168: }
! 169:
! 170: void
! 171: screen_status(const char *fmt, ...)
! 172: {
! 173: va_list ap;
! 174: char buf[1024];
! 175:
! 176: va_start(ap, fmt);
! 177: (void)strcpy(buf, "[ ");
! 178: vsprintf(buf+2, fmt, ap);
! 179: buf[COLS-4] = '\0';
! 180: (void)strcat(buf, " ]");
! 181:
! 182: attrset(A_STANDOUT);
! 183: mvaddstr(LINES-2, COLS/2 - strlen(buf)/2, buf);
! 184: attrset(A_NORMAL);
! 185:
! 186: screen_update();
! 187: (void)sleep(1);
! 188: }
! 189:
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