rxvtlib_main.c

具有IDE功能的编辑器

    if (init && o->rs[Rs_boldFont] != NULL)
	boldFont = XLoadQueryFont (o->Xdisplay, o->rs[Rs_boldFont]);
#endif

#ifdef MULTICHAR_SET
    if (o->TermWin.mfont) {
	XFreeFont (o->Xdisplay, o->TermWin.mfont);
	o->TermWin.mfont = 0;
    }

/* load font or substitute */
    xfont = XLoadQueryFont (o->Xdisplay, o->rs[Rs_mfont + idx]);
    if (!xfont) {
	print_error (msg, o->rs[Rs_mfont + idx]);
#ifdef ZHCN
	o->rs[Rs_mfont + idx] = "-*-16-*-gb2312*-*";
#else
	o->rs[Rs_mfont + idx] = "k14";
#endif
	xfont = XLoadQueryFont (o->Xdisplay, o->rs[Rs_mfont + idx]);
	if (!xfont) {
	    print_error (msg, o->rs[Rs_mfont + idx]);
	    goto Abort;
	}
    }
    o->TermWin.mfont = xfont;
#endif				/* MULTICHAR_SET */

/* alter existing GC */
    if (!init) {
	XSetFont (o->Xdisplay, o->TermWin.gc, o->TermWin.font->fid);
	rxvtlib_menubar_expose (o);
    }
/* set the sizes */
    {
	int             fh, fw = 0;

	fw = rxvt_get_fontwidest(o, o->TermWin.font);
	fh = o->TermWin.font->ascent + o->TermWin.font->descent;

	if (fw == o->TermWin.font->min_bounds.width)
	    o->TermWin.fprop = 0;	/* Mono-spaced (fixed width) font */
	else
	    o->TermWin.fprop = 1;	/* Proportional font */

	recheckfonts = !(fw == o->TermWin.fwidth && fh == o->TermWin.fheight);
	o->TermWin.fwidth = fw;
	o->TermWin.fheight = fh;
    }

/* check that size of boldFont is okay */
#ifndef NO_BOLDFONT
    if (recheckfonts) {
	o->TermWin.boldFont = NULL;
	if (boldFont != NULL) {
	    int             fh, fw;

	    fw = rxvt_get_fontwidest(o, boldFont);
	    fh = boldFont->ascent + boldFont->descent;
	    if (fw <= o->TermWin.fwidth && fh <= o->TermWin.fheight)
		o->TermWin.boldFont = boldFont;
	    o->TermWin.bprop = !(fw == o->TermWin.fwidth /* && fh == TermWin.fheight */ );
	}
    }
#endif				/* NO_BOLDFONT */

#ifdef MULTICHAR_SET
    if (recheckfonts)
    /* TODO: XXX: This could be much better? */
	if (o->TermWin.mfont != NULL) {
	    int             fh, fw;

	    fw = get_fontwidest(o->TermWin.mfont);
	    fh = o->TermWin.mfont->ascent + o->TermWin.mfont->descent;
	    if (fw <= o->TermWin.fwidth && fh <= o->TermWin.fheight)
		/* WHAT TO DO!! */ ;
	    o->TermWin.mprop = !(fw == o->TermWin.fwidth /* && fh == TermWin.fheight */ );
	}
#endif

    rxvtlib_set_colorfgbg (o);

    o->TermWin.width = o->TermWin.ncol * o->TermWin.fwidth;
    o->TermWin.height = o->TermWin.nrow * o->TermWin.fheight;

    if (!init) {
	rxvtlib_resize_all_windows (o);
	rxvtlib_scr_touch (o);
    }
    return;
  Abort:
    print_error ("aborting");	/* fatal problem */
    o->killed = EXIT_FAILURE | DO_EXIT;
    /* NOTREACHED */
}


int rxvt_get_fontwidest (rxvtlib *o, XFontStruct * f)
{
    int i, cw, fw = 0;

    if (f->min_bounds.width == f->max_bounds.width)
	return f->min_bounds.width;
    if (f->per_char == NULL)
	return 0;
    for (i = f->max_char_or_byte2 - f->min_char_or_byte2; --i >= 0;) {
	cw = f->per_char[i].width;
	MAX_IT (fw, cw);
    }
    return fw;
}



/* ------------------------------------------------------------------------- */
/* INTPROTO */
void            rxvtlib_init_vars (rxvtlib *o)
{
    o->Options = Opt_scrollBar | Opt_scrollTtyOutput;
    o->sb_shadow = 0;
    o->TermWin.ncol = 80;
    o->TermWin.nrow = 24;
    o->TermWin.mapped = 0;
    o->want_refresh = 1;
    o->scrollBar.win = 0;
#if (MENUBAR_MAX)
    o->menuBar.win = 0;
#endif

#if defined (HOTKEY_CTRL) || defined (HOTKEY_META)
/* recognized when combined with HOTKEY */
    o->ks_bigfont = XK_greater;
    o->ks_smallfont = XK_less;
#endif
#ifndef NO_BRIGHTCOLOR
    o->colorfgbg = DEFAULT_RSTYLE;
#endif
#ifndef NO_NEW_SELECTION
    o->selection_style = NEW_SELECT;
#else
    o->selection_style = OLD_SELECT;
#endif
}

extern Display *CDisplay;

/* ------------------------------------------------------------------------- */
/* INTPROTO */
const char    **rxvtlib_init_resources (rxvtlib *o, int argc, const char *const *argv)
{
    int             i, r_argc;
    char           *val;
    const char     *tmp;
    const char    **cmd_argv, **r_argv;

/*
 * Look for -exec option.  Find => split and make cmd_argv[] of command args
 */
    for (r_argc = 0; r_argc < argc; r_argc++)
	if (!strcmp (argv[r_argc], "-e") || !strcmp (argv[r_argc], "-exec"))
	    break;
    r_argv = (const char **)MALLOC (sizeof (char *) * (r_argc + 1));

    for (i = 0; i < r_argc; i++)
	r_argv[i] = (const char *)argv[i];
    r_argv[i] = NULL;
    if (r_argc == argc)
	cmd_argv = NULL;
    else {
	cmd_argv = (const char **)MALLOC (sizeof (char *) * (argc - r_argc));

	for (i = 0; i < argc - r_argc - 1; i++)
	    cmd_argv[i] = (const char *)argv[i + r_argc + 1];
	cmd_argv[i] = NULL;
    }

/* clear all resources */
    for (i = 0; i < TOTAL_RS; i++)
	o->rs[i] = NULL;

    o->rs[Rs_name] = my_basename (argv[0]);
    if (cmd_argv != NULL && cmd_argv[0] != NULL)
	o->rs[Rs_iconName] = o->rs[Rs_title] = my_basename (cmd_argv[0]);
/*
 * Open display, get options/resources and create the window
 */
    if ((o->rs[Rs_display_name] = getenv ("DISPLAY")) == NULL)
	o->rs[Rs_display_name] = ":0";
#ifdef LOCAL_X_IS_UNIX
    if (strncmp (o->rs[Rs_display_name], ":0", 2) == 0)
	o->rs[Rs_display_name] = "unix:0";
#endif

    rxvtlib_get_options (o, r_argc, r_argv);
    if (o->killed)
	return 0;

    FREE (r_argv);

#ifdef STANDALONE
    if ((o->Xdisplay = XOpenDisplay (o->rs[Rs_display_name])) == NULL) {
	print_error ("can't open display %s", o->rs[Rs_display_name]);
	o->killed = EXIT_FAILURE | DO_EXIT;
	return 0;
    }
#else
    o->Xdisplay = CDisplay;		/* FIXME: not generic */
#endif
#ifdef INEXPENSIVE_LOCAL_X_CALLS
    /* it's hard to determine further if we're on a local display or not */
    o->display_is_local = o->rs[Rs_display_name][0] == ':' ? 1 : 0;
#endif

    rxvtlib_extract_resources (o, o->Xdisplay, o->rs[Rs_name]);

#if ! defined(XTERM_SCROLLBAR) && ! defined(NEXT_SCROLLBAR)
    if (!(o->Options & Opt_scrollBar_floating))
	o->sb_shadow = SHADOW;
#endif

/*
 * set any defaults not already set
 */
    if (!o->rs[Rs_title])
	o->rs[Rs_title] = o->rs[Rs_name];
    if (!o->rs[Rs_iconName])
	o->rs[Rs_iconName] = o->rs[Rs_title];
    if (!o->rs[Rs_saveLines] || (o->TermWin.saveLines = atoi (o->rs[Rs_saveLines])) < 0)
	o->TermWin.saveLines = SAVELINES;

/* no point having a scrollbar without having any scrollback! */
    if (!o->TermWin.saveLines)
	o->Options &= ~Opt_scrollBar;

#ifdef PRINTPIPE
    if (!o->rs[Rs_print_pipe])
	o->rs[Rs_print_pipe] = PRINTPIPE;
#endif
    if (!o->rs[Rs_cutchars])
	o->rs[Rs_cutchars] = CUTCHARS;
#ifndef NO_BACKSPACE_KEY
    if (!o->rs[Rs_backspace_key])
# ifdef DEFAULT_BACKSPACE
	o->key_backspace = DEFAULT_BACKSPACE;
# else
    o->key_backspace = "DEC";	/* can toggle between \033 or \177 */
# endif
    else {
	val = (char *) strdup (o->rs[Rs_backspace_key]);
	(void)Str_escaped (val);
	o->key_backspace = val;
    }
#endif
#ifndef NO_DELETE_KEY
    if (!o->rs[Rs_delete_key])
# ifdef DEFAULT_DELETE
	o->key_delete = DEFAULT_DELETE;
# else
    o->key_delete = "\033[3~";
# endif
    else {
	val = (char *) strdup (o->rs[Rs_delete_key]);
	(void)Str_escaped (val);
	o->key_delete = val;
    }
#endif

    if (o->rs[Rs_selectstyle]) {
	if (strncasecmp (o->rs[Rs_selectstyle], "oldword", 7) == 0)
	    o->selection_style = OLD_WORD_SELECT;
#ifndef NO_OLD_SELECTION
	else if (strncasecmp (o->rs[Rs_selectstyle], "old", 3) == 0)
	    o->selection_style = OLD_SELECT;
#endif
    }
#ifndef NO_BOLDFONT
    if (o->rs[Rs_font] == NULL && o->rs[Rs_boldFont] != NULL) {
	o->rs[Rs_font] = o->rs[Rs_boldFont];
	o->rs[Rs_boldFont] = NULL;
    }
#endif
    for (i = 0; i < NFONTS; i++) {
	if (!o->rs[Rs_font + i])
	    o->rs[Rs_font + i] = o->def_fontName[i];
#ifdef MULTICHAR_SET
	if (!o->rs[Rs_mfont + i])
	    o->rs[Rs_mfont + i] = o->def_mfontName[i];
#endif
    }
    o->TermWin.fontset = NULL;

#ifdef XTERM_REVERSE_VIDEO
/* this is how xterm implements reverseVideo */
    if (o->Options & Opt_reverseVideo) {
	if (!o->rs[Rs_color + Color_fg])
	    o->rs[Rs_color + Color_fg] = o->def_colorName[Color_bg];
	if (!o->rs[Rs_color + Color_bg])
	    o->rs[Rs_color + Color_bg] = o->def_colorName[Color_fg];
    }
#endif

    for (i = 0; i < NRS_COLORS; i++)
	if (!o->rs[Rs_color + i])
	    o->rs[Rs_color + i] = o->def_colorName[i];

#ifndef XTERM_REVERSE_VIDEO
/* this is how we implement reverseVideo */
    if (o->Options & Opt_reverseVideo)
	SWAP_IT (o->rs[Rs_color + Color_fg], o->rs[Rs_color + Color_bg], tmp);
#endif

/* convenient aliases for setting fg/bg to colors */
    rxvtlib_color_aliases (o, Color_fg);
    rxvtlib_color_aliases (o, Color_bg);
#ifndef NO_CURSORCOLOR
    rxvtlib_color_aliases (o, Color_cursor);
    rxvtlib_color_aliases (o, Color_cursor2);
#endif				/* NO_CURSORCOLOR */
    rxvtlib_color_aliases (o, Color_pointer);
    rxvtlib_color_aliases (o, Color_border);
#ifndef NO_BOLDUNDERLINE
    rxvtlib_color_aliases (o, Color_BD);
    rxvtlib_color_aliases (o, Color_UL);
#endif				/* NO_BOLDUNDERLINE */

    return cmd_argv;
}

/* ------------------------------------------------------------------------- */
/* INTPROTO */
void            rxvtlib_init_env (rxvtlib *o)
{
    char           *val;

/* these don't need to be static but do so to placate some mem checkers */
    static char    env_display[100], env_windowid[40], env_term[40];

#ifdef DISPLAY_IS_IP
/* Fixup display_name for export over pty to any interested terminal
 * clients via "ESC[7n" (e.g. shells).  Note we use the pure IP number
 * (for the first non-loopback interface) that we get from
 * network_display().  This is more "name-resolution-portable", if you
 * will, and probably allows for faster x-client startup if your name
 * server is beyond a slow link or overloaded at client startup.  Of
 * course that only helps the shell's child processes, not us.
 *
 * Giving out the display_name also affords a potential security hole
 */
    o->rs[Rs_display_name] = (const char *)val =
	network_display (o->rs[Rs_display_name]);
    if (val == NULL)
#endif				/* DISPLAY_IS_IP */
	val = XDisplayString (o->Xdisplay);
    if (o->rs[Rs_display_name] == NULL)
	o->rs[Rs_display_name] = val;	/* use broken `:0' value */

    sprintf (env_display, "DISPLAY=%.90s", val);
    sprintf (env_windowid, "WINDOWID=%u", (unsigned int)o->TermWin.parent[0]);

/* add entries to the environment:
 * @ DISPLAY:   in case we started with -display
 * @ WINDOWID:  X window id number of the window
 * @ COLORTERM: terminal sub-name and also indicates its color
 * @ TERM:      terminal name
 * @ TERMINFO:	path to terminfo directory
 */
    putenv (env_display);
    putenv (env_windowid);
#ifdef RXVT_TERMINFO
    putenv ("TERMINFO=" RXVT_TERMINFO);
#endif
    if (o->Xdepth <= 2)
	putenv ("COLORTERM=" COLORTERMENV "-mono");
    else
	putenv ("COLORTERM=" COLORTERMENVFULL);
    if (o->rs[Rs_term_name] != NULL) {
	sprintf (env_term, "TERM=%.40s", o->rs[Rs_term_name]);
	putenv (env_term);
    } else {
	putenv ("TERM=" TERMENV);
    }
}

/* ------------------------------------------------------------------------- */
/* main() */
/* INTPROTO */
int rxvtlib_main (rxvtlib * o, int argc, const char *const *argv, int do_sleep)
{
    const char **cmd_argv;

/*
 * Save and then give up any super-user privileges
 * If we need privileges in any area then we must specifically request it.
 * We should only need to be root in these cases:
 *  1.  write utmp entries on some systems
 *  2.  chown tty on some systems
 */
    privileges (SAVE);
    privileges (IGNORE);

    rxvtlib_init_vars (o);
    cmd_argv = rxvtlib_init_resources (o, argc, (const char *const *) argv);
    if (o->killed)
	return EXIT_FAILURE;

#if (MENUBAR_MAX)
    rxvtlib_menubar_read (o, o->rs[Rs_menu]);
#endif
    rxvtlib_scrollbar_mapping (o, o->Options & Opt_scrollBar);

    rxvtlib_Create_Windows (o, argc, (const char *const *) argv);
    if (o->killed)
	return EXIT_FAILURE;

    rxvtlib_init_xlocale (o);

    rxvtlib_scr_reset (o);		/* initialize screen */
    rxvtlib_Gr_reset (o);		/* reset graphics */

#ifdef STANDALONE
#ifdef DEBUG_X
    XSynchronize (o->Xdisplay, True);
    XSetErrorHandler ((XErrorHandler) abort);
#else
    XSetErrorHandler ((XErrorHandler) xerror_handler);
#endif
#endif

    if (scrollbar_visible ())
	XMapWindow (o->Xdisplay, o->scrollBar.win);
#if (MENUBAR_MAX)
    if (menubar_visible ())
	XMapWindow (o->Xdisplay, o->menuBar.win);
#endif
#ifdef TRANSPARENT
    if (o->Options & Opt_transparent) {
	XSetWindowBackgroundPixmap (o->Xdisplay, o->TermWin.parent[0],
				    ParentRelative);
	XSetWindowBackgroundPixmap (o->Xdisplay, o->TermWin.vt, ParentRelative);
	XSelectInput (o->Xdisplay, Xroot, PropertyChangeMask);
    }
#endif
    XMapWindow (o->Xdisplay, o->TermWin.vt);
    XMapWindow (o->Xdisplay, o->TermWin.parent[0]);

    rxvtlib_init_env (o);
    rxvtlib_init_command (o, cmd_argv, do_sleep);
    if (o->killed)
	return EXIT_FAILURE;

#ifdef STANDALONE
    rxvtlib_main_loop (o);		/* main processing loop */
#endif
    if (cmd_argv)
	free (cmd_argv);
    return EXIT_SUCCESS;
}
/*----------------------- end-of-file (C source) -----------------------*/