Class: Curses::Window

Inherits:
Object
  • Object
show all
Defined in:
ext/curses/curses.c,
ext/curses/curses.c

Overview

Description

The means by which to create and manage frames or windows. While there may be more than one window at a time, only one window will receive input.

Usage

require "curses"

Curses.init_screen

my_str = "LOOK! PONIES!"

height, width = 12, my_str.length + 10
top, left = (Curses.lines - height) / 2, (Curses.cols - width) / 2
bwin = Curses::Window.new(height, width, top, left)
bwin.box("\\", "/")
bwin.refresh

win = bwin.subwin(height - 4, width - 4, top + 2, left + 2)
win.setpos(2, 3)
win.addstr(my_str)
# or even
win << "\nOH REALLY?"
win << "\nYES!! " + my_str
win.refresh
win.getch
win.close

Direct Known Subclasses

Pad

Instance Method Summary collapse

Constructor Details

#new(height, width, top, left) ⇒ Object

Construct a new Curses::Window with constraints of height lines, width columns, begin at top line, and begin left most column.

A new window using full screen is called as Curses::Window.new(0,0,0,0)


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# File 'ext/curses/curses.c', line 1708

static VALUE
window_initialize(VALUE obj, VALUE h, VALUE w, VALUE top, VALUE left)
{
    struct windata *winp;
    WINDOW *window;

    curses_init_screen(Qnil);
    TypedData_Get_Struct(obj, struct windata, &windata_type, winp);
    if (winp->window) delwin(winp->window);
    window = newwin(NUM2INT(h), NUM2INT(w), NUM2INT(top), NUM2INT(left));
    wclear(window);
    winp->window = window;

    return obj;
}

Instance Method Details

#<<(str) ⇒ Object

call-seq:

<<(str)

Add String str to the current string.

See also Curses::Window.addstr


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# File 'ext/curses/curses.c', line 2381

static VALUE
window_addstr2(VALUE obj, VALUE str)
{
    window_addstr(obj, str);
    return obj;
}

#addch(ch) ⇒ Object

Add a character ch, with attributes, to the window, then advance the cursor.

see also the system manual for curs_addch(3)


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# File 'ext/curses/curses.c', line 2315

static VALUE
window_addch(VALUE obj, VALUE ch)
{
    struct windata *winp;

    GetWINDOW(obj, winp);
    waddch(winp->window, OBJ2CHTYPE(ch));

    return Qnil;
}

#addstr(str) ⇒ Object

add a string of characters str, to the window and advance cursor


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# File 'ext/curses/curses.c', line 2351

static VALUE
window_addstr(VALUE obj, VALUE str)
{
    if (!NIL_P(str)) {
	struct windata *winp;

	StringValue(str);
#if defined(HAVE_WADDNWSTR) && defined(_WIN32)
	str = rb_str_export_to_enc(str, get_wide_encoding());
	GetWINDOW(obj, winp);
	waddnwstr(winp->window, (wchar_t *)RSTRING_PTR(str), RSTRING_LEN(str) / sizeof(wchar_t));
#else
	str = rb_str_export_to_enc(str, terminal_encoding);
	GetWINDOW(obj, winp);
	waddstr(winp->window, StringValueCStr(str));
#endif
    }
    return Qnil;
}

#attroff(attrs) ⇒ Object

Turns off the named attributes attrs without affecting any others.

See also Curses::Window.attrset


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# File 'ext/curses/curses.c', line 2668

static VALUE
window_attroff(VALUE obj, VALUE attrs)
{
#ifdef HAVE_WATTROFF
    struct windata *winp;

    GetWINDOW(obj,winp);
    return INT2FIX(wattroff(winp->window,NUM2INT(attrs)));
#else
    return Qtrue;
#endif
}

#attron(attrs) ⇒ Object

Turns on the named attributes attrs without turning any other attributes on or off.

See also Curses::Window.attrset


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# File 'ext/curses/curses.c', line 2690

static VALUE
window_attron(VALUE obj, VALUE attrs)
{
#ifdef HAVE_WATTRON
    struct windata *winp;
    VALUE val;

    GetWINDOW(obj,winp);
    val = INT2FIX(wattron(winp->window,NUM2INT(attrs)));
    if (rb_block_given_p()) {
	rb_yield(val);
	wattroff(winp->window,NUM2INT(attrs));
	return val;
    }
    else{
	return val;
    }
#else
    return Qtrue;
#endif
}

#attrset(attrs) ⇒ Object

Sets the current attributes of the given window to attrs.

The following video attributes, defined in <curses.h>, can be passed to the routines Curses::Window.attron, Curses::Window.attroff, and Curses::Window.attrset, or OR'd with the characters passed to addch.

A_NORMAL        Normal display (no highlight)
A_STANDOUT      Best highlighting mode of the terminal.
A_UNDERLINE     Underlining
A_REVERSE       Reverse video
A_BLINK         Blinking
A_DIM           Half bright
A_BOLD          Extra bright or bold
A_PROTECT       Protected mode
A_INVIS         Invisible or blank mode
A_ALTCHARSET    Alternate character set
A_CHARTEXT      Bit-mask to extract a character
COLOR_PAIR(n)   Color-pair number n

TODO: provide some examples here.

see also system manual curs_attr(3)


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# File 'ext/curses/curses.c', line 2738

static VALUE
window_attrset(VALUE obj, VALUE attrs)
{
#ifdef HAVE_WATTRSET
    struct windata *winp;

    GetWINDOW(obj,winp);
    return INT2FIX(wattrset(winp->window,NUM2INT(attrs)));
#else
    return Qtrue;
#endif
}

#begx ⇒ Object

A getter for the beginning column (X coord) of the window


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# File 'ext/curses/curses.c', line 2194

static VALUE
window_begx(VALUE obj)
{
    struct windata *winp;
    int x, RB_UNUSED_VAR(y);

    GetWINDOW(obj, winp);
#ifdef getbegyx
    getbegyx(winp->window, y, x);
#else
    x = winp->window->_begx;
#endif
    return INT2FIX(x);
}

#begy ⇒ Object

A getter for the beginning line (Y coord) of the window


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# File 'ext/curses/curses.c', line 2174

static VALUE
window_begy(VALUE obj)
{
    struct windata *winp;
    int RB_UNUSED_VAR(x), y;

    GetWINDOW(obj, winp);
#ifdef getbegyx
    getbegyx(winp->window, y, x);
#else
    y = winp->window->_begy;
#endif
    return INT2FIX(y);
}

#bkgd(ch) ⇒ Object

Set the background of the current window and apply character Integer ch to every character.

see also Curses.bkgd


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# File 'ext/curses/curses.c', line 2781

static VALUE
window_bkgd(VALUE obj, VALUE ch)
{
#ifdef HAVE_WBKGD
    struct windata *winp;

    GetWINDOW(obj,winp);
    return (wbkgd(winp->window, OBJ2CHTYPE(ch)) == OK) ? Qtrue : Qfalse;
#else
    return Qfalse;
#endif
}

#bkgdset(ch) ⇒ Object

Manipulate the background of the current window with character Integer ch

see also Curses.bkgdset


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# File 'ext/curses/curses.c', line 2760

static VALUE
window_bkgdset(VALUE obj, VALUE ch)
{
#ifdef HAVE_WBKGDSET
    struct windata *winp;

    GetWINDOW(obj,winp);
    wbkgdset(winp->window, OBJ2CHTYPE(ch));
#endif
    return Qnil;
}

#box(vert = nil, hor = nil, corn = nil) ⇒ Object

set the characters to frame the window in. The vertical vert and horizontal hor character.

win = Curses::Window.new(5,5,5,5) win.box(?|, ?-)


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# File 'ext/curses/curses.c', line 2220

static VALUE
window_box(int argc, VALUE *argv, VALUE self)
{
    struct windata *winp;
    VALUE vert, hor, corn;

    rb_scan_args(argc, argv, "03", &vert, &hor, &corn);

    GetWINDOW(self, winp);
    box(winp->window,
	NIL_P(vert) ? 0 : OBJ2CHTYPE(vert),
	NIL_P(hor) ? 0 : OBJ2CHTYPE(hor));

    if (!NIL_P(corn)) {
	int cur_x, cur_y, x, y;
	chtype c;

	c = OBJ2CHTYPE(corn);
	getyx(winp->window, cur_y, cur_x);
	x = NUM2INT(window_maxx(self)) - 1;
	y = NUM2INT(window_maxy(self)) - 1;
	wmove(winp->window, 0, 0);
	waddch(winp->window, c);
	wmove(winp->window, y, 0);
	waddch(winp->window, c);
	wmove(winp->window, y, x);
	waddch(winp->window, c);
	wmove(winp->window, 0, x);
	waddch(winp->window, c);
	wmove(winp->window, cur_y, cur_x);
    }

    return Qnil;
}

#clear ⇒ Object

Clear the window.


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# File 'ext/curses/curses.c', line 1805

static VALUE
window_clear(VALUE obj)
{
    struct windata *winp;

    GetWINDOW(obj, winp);
    wclear(winp->window);

    return Qnil;
}

#close ⇒ Object

Deletes the window, and frees the memory


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# File 'ext/curses/curses.c', line 1788

static VALUE
window_close(VALUE obj)
{
    struct windata *winp;

    GetWINDOW(obj, winp);
    delwin(winp->window);
    winp->window = 0;

    return Qnil;
}

#clrtoeol ⇒ Object

Clear the window to the end of line, that the cursor is currently on.


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# File 'ext/curses/curses.c', line 1841

static VALUE
window_clrtoeol(VALUE obj)
{
    struct windata *winp;

    GetWINDOW(obj, winp);
    wclrtoeol(winp->window);

    return Qnil;
}

#color_set(col) ⇒ Object

Sets the current color of the given window to the foreground/background combination described by the Fixnum col.


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# File 'ext/curses/curses.c', line 2606

static VALUE
window_color_set(VALUE obj, VALUE col)
{
    struct windata *winp;
    int res;

    GetWINDOW(obj, winp);
    res = wcolor_set(winp->window, NUM2INT(col), NULL);
    return (res == OK) ? Qtrue : Qfalse;
}

#curx ⇒ Object

A getter for the current column (X coord) of the window


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# File 'ext/curses/curses.c', line 2110

static VALUE
window_curx(VALUE obj)
{
    struct windata *winp;
    int x, RB_UNUSED_VAR(y);

    GetWINDOW(obj, winp);
    getyx(winp->window, y, x);
    return INT2FIX(x);
}

#cury ⇒ Object

A getter for the current line (Y coord) of the window


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# File 'ext/curses/curses.c', line 2094

static VALUE
window_cury(VALUE obj)
{
    struct windata *winp;
    int RB_UNUSED_VAR(x), y;

    GetWINDOW(obj, winp);
    getyx(winp->window, y, x);
    return INT2FIX(y);
}

#delch ⇒ Object

Delete the character under the cursor


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# File 'ext/curses/curses.c', line 2471

static VALUE
window_delch(VALUE obj)
{
    struct windata *winp;

    GetWINDOW(obj, winp);
    wdelch(winp->window);
    return Qnil;
}

#deleteln ⇒ Object

Delete the line under the cursor.


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# File 'ext/curses/curses.c', line 2487

static VALUE
window_deleteln(VALUE obj)
{
#if defined(HAVE_WDELETELN) || defined(wdeleteln)
    struct windata *winp;

    GetWINDOW(obj, winp);
    wdeleteln(winp->window);
#endif
    return Qnil;
}

#derwin(height, width, relative_top, relative_left) ⇒ Object

Construct a new subwindow with constraints of height lines, width columns, begin at top line, and begin left most column relative to the parent window.


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# File 'ext/curses/curses.c', line 1761

static VALUE
window_derwin(VALUE obj, VALUE height, VALUE width, VALUE top, VALUE left)
{
    struct windata *winp;
    WINDOW *window;
    VALUE win;
    int h, w, t, l;

    h = NUM2INT(height);
    w = NUM2INT(width);
    t = NUM2INT(top);
    l = NUM2INT(left);
    GetWINDOW(obj, winp);
    window = derwin(winp->window, h, w, t, l);
    win = prep_window(rb_obj_class(obj), window);

    return win;
}

#erase ⇒ Object

Erase the window.


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# File 'ext/curses/curses.c', line 1822

static VALUE
window_erase(VALUE obj)
{
    struct windata *winp;

    GetWINDOW(obj, winp);
    werase(winp->window);

    return Qnil;
}

#get_char ⇒ Object

Read and returns a character or function key from the window. A single or multibyte character is represented by a String, and a function key is represented by an Integer. Returns nil if no input is ready.

See Curses::Key to all the function KEY_* available


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# File 'ext/curses/curses.c', line 4724

static VALUE
window_get_char(VALUE obj)
{
#ifdef HAVE_WGET_WCH
    struct windata *winp;
    struct wget_wch_arg arg;

    GetWINDOW(obj, winp);
    arg.win = winp->window;
    rb_thread_call_without_gvl(wget_wch_func, &arg, RUBY_UBF_IO, 0);
    switch (arg.retval) {
    case OK:
	return keyboard_uint_chr(arg.ch);
    case KEY_CODE_YES:
	return key_code_value(arg.ch);
    }
    return Qnil;
#else
    struct windata *winp;
    struct wgetch_arg arg;

    GetWINDOW(obj, winp);
    arg.win = winp->window;
    rb_thread_call_without_gvl(wgetch_func, (void *)&arg, RUBY_UBF_IO, 0);
    if (arg.c > 0xff) {
	return INT2NUM(arg.c);
    }
    else if (arg.c >= 0) {
	return keyboard_uint_chr(arg.c);
    }
    else {
	return Qnil;
    }
#endif
}

#getbkgd ⇒ Object

Returns an Integer (ch) for the character property in the current window.


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# File 'ext/curses/curses.c', line 2799

static VALUE
window_getbkgd(VALUE obj)
{
#ifdef HAVE_WGETBKGD
    chtype c;
    struct windata *winp;

    GetWINDOW(obj,winp);
    return (c = getbkgd(winp->window) != ERR) ? ULONG2NUM(c) : Qnil;
#else
    return Qnil;
#endif
}

#getch ⇒ Object

Read and returns a character from the window.

See Curses::Key to all the function KEY_* available


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# File 'ext/curses/curses.c', line 2409

static VALUE
window_getch(VALUE obj)
{
    struct windata *winp;
    struct wgetch_arg arg;
    int c;

    GetWINDOW(obj, winp);
    arg.win = winp->window;
    rb_thread_call_without_gvl(wgetch_func, (void *)&arg, RUBY_UBF_IO, 0);
    c = arg.c;
    if (c == EOF) return Qnil;
    if (rb_isprint(c)) {
	char ch = (char)c;

	return rb_external_str_new_with_enc(&ch, 1, keyboard_encoding);
    }
    return UINT2NUM(c);
}

#getstr ⇒ Object

This is equivalent to a series of Curses::Window.getch calls


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# File 'ext/curses/curses.c', line 2452

static VALUE
window_getstr(VALUE obj)
{
    struct windata *winp;
    struct wgetstr_arg arg;

    GetWINDOW(obj, winp);
    arg.win = winp->window;
    rb_thread_call_without_gvl(wgetstr_func, (void *)&arg, RUBY_UBF_IO, 0);
    return rb_external_str_new_with_enc(arg.rtn, strlen(arg.rtn),
				       	keyboard_encoding);
}

#idlok(bool) ⇒ Object

If bool is true curses considers using the hardware insert/delete line feature of terminals so equipped.

If bool is false, disables use of line insertion and deletion. This option should be enabled only if the application needs insert/delete line, for example, for a screen editor.

It is disabled by default because insert/delete line tends to be visually annoying when used in applications where it is not really needed. If insert/delete line cannot be used, curses redraws the changed portions of all lines.


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# File 'ext/curses/curses.c', line 2558

static VALUE
window_idlok(VALUE obj, VALUE bf)
{
    struct windata *winp;

    GetWINDOW(obj, winp);
    idlok(winp->window, RTEST(bf) ? TRUE : FALSE);
    return Qnil;
}

#inch ⇒ Object

Returns the character at the current position of the window.


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# File 'ext/curses/curses.c', line 2298

static VALUE
window_inch(VALUE obj)
{
    struct windata *winp;

    GetWINDOW(obj, winp);
    return CHTYPE2NUM(winch(winp->window));
}

#insch(ch) ⇒ Object

Insert a character ch, before the cursor, in the current window


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# File 'ext/curses/curses.c', line 2333

static VALUE
window_insch(VALUE obj, VALUE ch)
{
    struct windata *winp;

    GetWINDOW(obj, winp);
    winsch(winp->window, OBJ2CHTYPE(ch));

    return Qnil;
}

#insertln ⇒ Object

Inserts a line above the cursor, and the bottom line is lost


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# File 'ext/curses/curses.c', line 2505

static VALUE
window_insertln(VALUE obj)
{
#if defined(HAVE_WINSERTLN) || defined(winsertln)
    struct windata *winp;

    GetWINDOW(obj, winp);
    winsertln(winp->window);
#endif
    return Qnil;
}

#keypad(bool) ⇒ Object

Enables the keypad of the user's terminal.

If enabled (bool is true), the user can press a function key (such as an arrow key) and wgetch returns a single value representing the function key, as in KEY_LEFT. If disabled (bool is false), curses does not treat function keys specially and the program has to interpret the escape sequences itself. If the keypad in the terminal can be turned on (made to transmit) and off (made to work locally), turning on this option causes the terminal keypad to be turned on when Curses::Window.getch is called.

The default value for keypad is false.


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# File 'ext/curses/curses.c', line 2862

static VALUE
window_keypad(VALUE obj, VALUE val)
{
    struct windata *winp;

    GetWINDOW(obj,winp);
    /* keypad() of NetBSD's libcurses returns no value */
#if defined(__NetBSD__) && !defined(NCURSES_VERSION)
    keypad(winp->window,(RTEST(val) ? TRUE : FALSE));
    return Qnil;
#else
    /* may have to raise exception on ERR */
    return (keypad(winp->window,RTEST(val) ? TRUE : FALSE)) == OK ?
	Qtrue : Qfalse;
#endif
}

#keypad(bool) ⇒ Object

Enables the keypad of the user's terminal.

If enabled (bool is true), the user can press a function key (such as an arrow key) and wgetch returns a single value representing the function key, as in KEY_LEFT. If disabled (bool is false), curses does not treat function keys specially and the program has to interpret the escape sequences itself. If the keypad in the terminal can be turned on (made to transmit) and off (made to work locally), turning on this option causes the terminal keypad to be turned on when Curses::Window.getch is called.

The default value for keypad is false.


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# File 'ext/curses/curses.c', line 2862

static VALUE
window_keypad(VALUE obj, VALUE val)
{
    struct windata *winp;

    GetWINDOW(obj,winp);
    /* keypad() of NetBSD's libcurses returns no value */
#if defined(__NetBSD__) && !defined(NCURSES_VERSION)
    keypad(winp->window,(RTEST(val) ? TRUE : FALSE));
    return Qnil;
#else
    /* may have to raise exception on ERR */
    return (keypad(winp->window,RTEST(val) ? TRUE : FALSE)) == OK ?
	Qtrue : Qfalse;
#endif
}

#line_touched?(line) ⇒ Boolean

Return true if the specified line has been modified since the last call of refresh.

Returns:

  • (Boolean) 

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# File 'ext/curses/curses.c', line 2013

static VALUE
window_line_touched(VALUE obj, VALUE line)
{
    struct windata *winp;
    int result, n;

    GetWINDOW(obj, winp);
    n = NUM2INT(line);
    result = is_linetouched(winp->window, n);
    if (result == ERR) {
	rb_raise(rb_eArgError, "Invalid line %d", n);
    }
    return result ? Qtrue : Qfalse;
}

#maxx ⇒ Object

A getter for the maximum columns for the window


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# File 'ext/curses/curses.c', line 2150

static VALUE
window_maxx(VALUE obj)
{
    struct windata *winp;

    GetWINDOW(obj, winp);
#if defined(getmaxx)
    return INT2FIX(getmaxx(winp->window));
#elif defined(getmaxyx)
    {
	int x, RB_UNUSED_VAR(y);
	getmaxyx(winp->window, y, x);
	return INT2FIX(x);
    }
#else
    return INT2FIX(winp->window->_maxx+1);
#endif
}

#maxy ⇒ Object

A getter for the maximum lines for the window


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# File 'ext/curses/curses.c', line 2126

static VALUE
window_maxy(VALUE obj)
{
    struct windata *winp;

    GetWINDOW(obj, winp);
#if defined(getmaxy)
    return INT2FIX(getmaxy(winp->window));
#elif defined(getmaxyx)
    {
	int RB_UNUSED_VAR(x), y;
	getmaxyx(winp->window, y, x);
	return INT2FIX(y);
    }
#else
    return INT2FIX(winp->window->_maxy+1);
#endif
}

#move(y, x) ⇒ Object

Moves the window so that the upper left-hand corner is at position (y, x)


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# File 'ext/curses/curses.c', line 2037

static VALUE
window_move(VALUE obj, VALUE y, VALUE x)
{
    struct windata *winp;

    GetWINDOW(obj, winp);
    mvwin(winp->window, NUM2INT(y), NUM2INT(x));

    return Qnil;
}

#move_relative(x, y) ⇒ Object

Moves the derived or subwindow inside its parent window. The screen-relative parameters of the window are not changed.


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# File 'ext/curses/curses.c', line 2056

static VALUE
window_move_relative(VALUE obj, VALUE y, VALUE x)
{
    struct windata *winp;

    GetWINDOW(obj, winp);
    mvderwin(winp->window, NUM2INT(y), NUM2INT(x));

    return Qnil;
}

#nodelay=(bool) ⇒ Object

When in no-delay mode Curses::Window#getch is a non-blocking call. If no input is ready #getch returns ERR.

When in delay mode (bool is false which is the default), Curses::Window#getch blocks until a key is pressed.


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# File 'ext/curses/curses.c', line 2895

static VALUE
window_nodelay(VALUE obj, VALUE val)
{
    struct windata *winp;
    GetWINDOW(obj,winp);

    /* nodelay() of NetBSD's libcurses returns no value */
#if defined(__NetBSD__) && !defined(NCURSES_VERSION)
    nodelay(winp->window, RTEST(val) ? TRUE : FALSE);
    return Qnil;
#else
    return nodelay(winp->window,RTEST(val) ? TRUE : FALSE) == OK ? Qtrue : Qfalse;
#endif
}

#noutrefresh ⇒ Object

Refreshes the windows and lines.

Curses::Window.noutrefresh allows multiple updates with more efficiency than Curses::Window.refresh alone.


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# File 'ext/curses/curses.c', line 1877

static VALUE
window_noutrefresh(VALUE obj)
{
    struct windata *winp;

    GetWINDOW(obj, winp);
#ifdef HAVE_DOUPDATE
    wnoutrefresh(winp->window);
#else
    wrefresh(winp->window);
#endif

    return Qnil;
}

#redraw ⇒ Object

Redraws the entire window.


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# File 'ext/curses/curses.c', line 1898

static VALUE
window_redraw(VALUE obj)
{
    struct windata *winp;

    GetWINDOW(obj, winp);
    redrawwin(winp->window);

    return Qnil;
}

#refresh ⇒ Object

Refreshes the windows and lines.


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# File 'ext/curses/curses.c', line 1858

static VALUE
window_refresh(VALUE obj)
{
    struct windata *winp;

    GetWINDOW(obj, winp);
    wrefresh(winp->window);

    return Qnil;
}

#resize(lines, cols) ⇒ Object

Resize the current window to Fixnum lines and Fixnum cols


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# File 'ext/curses/curses.c', line 2820

static VALUE
window_resize(VALUE obj, VALUE lin, VALUE col)
{
#if defined(HAVE_WRESIZE)
    struct windata *winp;

    GetWINDOW(obj,winp);
    return wresize(winp->window, NUM2INT(lin), NUM2INT(col)) == OK ? Qtrue : Qfalse;
#else
    return Qnil;
#endif
}

#scrl(num) ⇒ Object

Scrolls the current window Fixnum num lines. The current cursor position is not changed.

For positive num, it scrolls up.

For negative num, it scrolls down.


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# File 'ext/curses/curses.c', line 2645

static VALUE
window_scrl(VALUE obj, VALUE n)
{
#ifdef HAVE_WSCRL
    struct windata *winp;

    GetWINDOW(obj, winp);
    /* may have to raise exception on ERR */
    return (wscrl(winp->window,NUM2INT(n)) == OK) ? Qtrue : Qfalse;
#else
    return Qfalse;
#endif
}

#scroll ⇒ Object

Scrolls the current window up one line.


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# File 'ext/curses/curses.c', line 2623

static VALUE
window_scroll(VALUE obj)
{
    struct windata *winp;

    GetWINDOW(obj, winp);
    /* may have to raise exception on ERR */
    return (scroll(winp->window) == OK) ? Qtrue : Qfalse;
}

#scrollok(bool) ⇒ Object

Controls what happens when the cursor of a window is moved off the edge of the window or scrolling region, either as a result of a newline action on the bottom line, or typing the last character of the last line.

If disabled, (bool is false), the cursor is left on the bottom line.

If enabled, (bool is true), the window is scrolled up one line (Note that to get the physical scrolling effect on the terminal, it is also necessary to call Curses::Window.idlok)


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# File 'ext/curses/curses.c', line 2532

static VALUE
window_scrollok(VALUE obj, VALUE bf)
{
    struct windata *winp;

    GetWINDOW(obj, winp);
    scrollok(winp->window, RTEST(bf) ? TRUE : FALSE);
    return Qnil;
}

#setpos(y, x) ⇒ Object

A setter for the position of the cursor in the current window, using coordinates x and y


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# File 'ext/curses/curses.c', line 2079

static VALUE
window_setpos(VALUE obj, VALUE y, VALUE x)
{
    struct windata *winp;

    GetWINDOW(obj, winp);
    wmove(winp->window, NUM2INT(y), NUM2INT(x));
    return Qnil;
}

#setscrreg(top, bottom) ⇒ Object

Set a software scrolling region in a window. top and bottom are lines numbers of the margin.

If this option and Curses::Window.scrollok are enabled, an attempt to move off the bottom margin line causes all lines in the scrolling region to scroll one line in the direction of the first line. Only the text of the window is scrolled.


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# File 'ext/curses/curses.c', line 2582

static VALUE
window_setscrreg(VALUE obj, VALUE top, VALUE bottom)
{
#ifdef HAVE_WSETSCRREG
    struct windata *winp;
    int res;

    GetWINDOW(obj, winp);
    res = wsetscrreg(winp->window, NUM2INT(top), NUM2INT(bottom));
    /* may have to raise exception on ERR */
    return (res == OK) ? Qtrue : Qfalse;
#else
    return Qfalse;
#endif
}

#standend ⇒ Object

Enables the Normal display (no highlight)

This is equivalent to Curses::Window.attron(A_NORMAL)

see also Curses::Window.attrset


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# File 'ext/curses/curses.c', line 2283

static VALUE
window_standend(VALUE obj)
{
    struct windata *winp;

    GetWINDOW(obj, winp);
    wstandend(winp->window);
    return Qnil;
}

#standout ⇒ Object

Enables the best highlighting mode of the terminal.

This is equivalent to Curses::Window.attron(A_STANDOUT)

see also Curses::Window.attrset


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# File 'ext/curses/curses.c', line 2264

static VALUE
window_standout(VALUE obj)
{
    struct windata *winp;

    GetWINDOW(obj, winp);
    wstandout(winp->window);
    return Qnil;
}

#subwin(height, width, top, left) ⇒ Object

Construct a new subwindow with constraints of height lines, width columns, begin at top line, and begin left most column.


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# File 'ext/curses/curses.c', line 1732

static VALUE
window_subwin(VALUE obj, VALUE height, VALUE width, VALUE top, VALUE left)
{
    struct windata *winp;
    WINDOW *window;
    VALUE win;
    int h, w, t, l;

    h = NUM2INT(height);
    w = NUM2INT(width);
    t = NUM2INT(top);
    l = NUM2INT(left);
    GetWINDOW(obj, winp);
    window = subwin(winp->window, h, w, t, l);
    win = prep_window(rb_obj_class(obj), window);

    return win;
}

#timeout=(delay) ⇒ Object

Sets block and non-blocking reads for the window.

  • If delay is negative, blocking read is used (i.e., waits indefinitely for input).

  • If delay is zero, then non-blocking read is used (i.e., read returns ERR if no input is waiting).

  • If delay is positive, then read blocks for delay milliseconds, and returns ERR if there is still no input.


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# File 'ext/curses/curses.c', line 2924

static VALUE
window_timeout(VALUE obj, VALUE delay)
{
    struct windata *winp;
    GetWINDOW(obj,winp);

    wtimeout(winp->window,NUM2INT(delay));
    return Qnil;
}

#touch ⇒ Object

Treat the window as if it has been modified since the last call of refresh.


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# File 'ext/curses/curses.c', line 1918

static VALUE
window_touch(VALUE obj)
{
    struct windata *winp;

    GetWINDOW(obj, winp);
    touchwin(winp->window);

    return Qnil;
}

#touch_line(y, n, changed = true) ⇒ Object

Make n lines from line y look as if they have (changed = true) or have not (changed = false) been modified since the last call of refresh.


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# File 'ext/curses/curses.c', line 1979

static VALUE
window_touch_line(int argc, VALUE *argv, VALUE obj)
{
    struct windata *winp;
    VALUE y, n, changed;
    int result;

    rb_scan_args(argc, argv, "12", &y, &n, &changed);
    if (argc < 2) {
	n = INT2NUM(1);
    }
    if (argc < 3) {
	changed = Qtrue;
    }
    GetWINDOW(obj, winp);
    result = wtouchln(winp->window, NUM2INT(y), NUM2INT(n), RTEST(changed));
    if (result == ERR) {
	rb_raise(rb_eRangeError, "Out of window");
    }

    return Qnil;
}

#touched? ⇒ Boolean

Return true if the window has been modified since the last call of refresh.

Returns:

  • (Boolean) 

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# File 'ext/curses/curses.c', line 1959

static VALUE
window_touched(VALUE obj)
{
    struct windata *winp;

    GetWINDOW(obj, winp);
    return is_wintouched(winp->window) ? Qtrue : Qfalse;
}

#untouch ⇒ Object

Treat the window as if it has not been modified since the last call of refresh.


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# File 'ext/curses/curses.c', line 1939

static VALUE
window_untouch(VALUE obj)
{
    struct windata *winp;

    GetWINDOW(obj, winp);
    untouchwin(winp->window);

    return Qnil;
}