Class: Curses::Window

Inherits:
Data
  • 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)



1549
1550
1551
1552
1553
1554
1555
1556
1557
1558
1559
1560
1561
1562
1563
 
# File 'ext/curses/curses.c', line 1549

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

    curses_init_screen();
    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



2220
2221
2222
2223
2224
2225
 
# File 'ext/curses/curses.c', line 2220

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)



2154
2155
2156
2157
2158
2159
2160
2161
2162
2163
 
# File 'ext/curses/curses.c', line 2154

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

    GetWINDOW(obj, winp);
    waddch(winp->window, NUM2CH(ch));

    return Qnil;
}

#addstr(str) ⇒ Object

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



2190
2191
2192
2193
2194
2195
2196
2197
2198
2199
2200
2201
2202
2203
2204
2205
2206
2207
2208
 
# File 'ext/curses/curses.c', line 2190

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



2507
2508
2509
2510
2511
2512
2513
2514
2515
2516
2517
2518
 
# File 'ext/curses/curses.c', line 2507

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



2529
2530
2531
2532
2533
2534
2535
2536
2537
2538
2539
2540
2541
2542
2543
2544
2545
2546
2547
2548
2549
 
# File 'ext/curses/curses.c', line 2529

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)



2577
2578
2579
2580
2581
2582
2583
2584
2585
2586
2587
2588
 
# File 'ext/curses/curses.c', line 2577

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



2035
2036
2037
2038
2039
2040
2041
2042
2043
2044
2045
2046
2047
2048
 
# File 'ext/curses/curses.c', line 2035

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



2015
2016
2017
2018
2019
2020
2021
2022
2023
2024
2025
2026
2027
2028
 
# File 'ext/curses/curses.c', line 2015

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



2620
2621
2622
2623
2624
2625
2626
2627
2628
2629
2630
2631
 
# File 'ext/curses/curses.c', line 2620

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

    GetWINDOW(obj,winp);
    return (wbkgd(winp->window, NUM2CHTYPE(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



2599
2600
2601
2602
2603
2604
2605
2606
2607
2608
2609
 
# File 'ext/curses/curses.c', line 2599

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

    GetWINDOW(obj,winp);
    wbkgdset(winp->window, NUM2CHTYPE(ch));
#endif
    return Qnil;
}

#box(vert, hor) ⇒ 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(?|, ?-)



2061
2062
2063
2064
2065
2066
2067
2068
2069
2070
2071
2072
2073
2074
2075
2076
2077
2078
2079
2080
2081
2082
2083
2084
2085
2086
2087
2088
2089
2090
2091
2092
 
# File 'ext/curses/curses.c', line 2061

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

    rb_scan_args(argc, argv, "21", &vert, &hor, &corn);

    GetWINDOW(self, winp);
    box(winp->window, NUM2CH(vert), NUM2CH(hor));

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

	c = NUM2CH(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.



1646
1647
1648
1649
1650
1651
1652
1653
1654
1655
 
# File 'ext/curses/curses.c', line 1646

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



1629
1630
1631
1632
1633
1634
1635
1636
1637
1638
1639
 
# File 'ext/curses/curses.c', line 1629

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.



1682
1683
1684
1685
1686
1687
1688
1689
1690
1691
 
# File 'ext/curses/curses.c', line 1682

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.



2445
2446
2447
2448
2449
2450
2451
2452
2453
2454
 
# File 'ext/curses/curses.c', line 2445

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



1951
1952
1953
1954
1955
1956
1957
1958
1959
1960
 
# File 'ext/curses/curses.c', line 1951

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



1935
1936
1937
1938
1939
1940
1941
1942
1943
1944
 
# File 'ext/curses/curses.c', line 1935

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



2310
2311
2312
2313
2314
2315
2316
2317
2318
 
# File 'ext/curses/curses.c', line 2310

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.



2326
2327
2328
2329
2330
2331
2332
2333
2334
2335
2336
 
# File 'ext/curses/curses.c', line 2326

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.



1602
1603
1604
1605
1606
1607
1608
1609
1610
1611
1612
1613
1614
1615
1616
1617
1618
1619
 
# File 'ext/curses/curses.c', line 1602

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.



1663
1664
1665
1666
1667
1668
1669
1670
1671
1672
 
# File 'ext/curses/curses.c', line 1663

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



3079
3080
3081
3082
3083
3084
3085
3086
3087
3088
3089
3090
3091
3092
3093
3094
3095
3096
3097
3098
3099
3100
3101
3102
3103
3104
3105
3106
3107
3108
3109
3110
3111
3112
3113
 
# File 'ext/curses/curses.c', line 3079

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 UINT2NUM(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.



2638
2639
2640
2641
2642
2643
2644
2645
2646
2647
2648
2649
2650
 
# File 'ext/curses/curses.c', line 2638

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



2248
2249
2250
2251
2252
2253
2254
2255
2256
2257
2258
2259
2260
2261
2262
2263
2264
2265
2266
 
# File 'ext/curses/curses.c', line 2248

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 f Curses::Window.getch calls



2291
2292
2293
2294
2295
2296
2297
2298
2299
2300
2301
2302
 
# File 'ext/curses/curses.c', line 2291

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.



2397
2398
2399
2400
2401
2402
2403
2404
2405
 
# File 'ext/curses/curses.c', line 2397

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.



2137
2138
2139
2140
2141
2142
2143
2144
 
# File 'ext/curses/curses.c', line 2137

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

    GetWINDOW(obj, winp);
    return CH2FIX(winch(winp->window));
}

#insch(ch) ⇒ Object

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



2172
2173
2174
2175
2176
2177
2178
2179
2180
2181
 
# File 'ext/curses/curses.c', line 2172

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

    GetWINDOW(obj, winp);
    winsch(winp->window, NUM2CH(ch));

    return Qnil;
}

#insertln ⇒ Object

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



2344
2345
2346
2347
2348
2349
2350
2351
2352
2353
2354
 
# File 'ext/curses/curses.c', line 2344

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.



2701
2702
2703
2704
2705
2706
2707
2708
2709
2710
2711
2712
2713
2714
2715
2716
 
# File 'ext/curses/curses.c', line 2701

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.



2701
2702
2703
2704
2705
2706
2707
2708
2709
2710
2711
2712
2713
2714
2715
2716
 
# File 'ext/curses/curses.c', line 2701

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) 


1854
1855
1856
1857
1858
1859
1860
1861
1862
1863
1864
1865
1866
1867
 
# File 'ext/curses/curses.c', line 1854

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



1991
1992
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
 
# File 'ext/curses/curses.c', line 1991

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



1967
1968
1969
1970
1971
1972
1973
1974
1975
1976
1977
1978
1979
1980
1981
1982
1983
1984
 
# File 'ext/curses/curses.c', line 1967

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)



1878
1879
1880
1881
1882
1883
1884
1885
1886
1887
 
# File 'ext/curses/curses.c', line 1878

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.



1897
1898
1899
1900
1901
1902
1903
1904
1905
1906
 
# File 'ext/curses/curses.c', line 1897

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.



2734
2735
2736
2737
2738
2739
2740
2741
2742
2743
2744
2745
2746
2747
 
# File 'ext/curses/curses.c', line 2734

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.



1718
1719
1720
1721
1722
1723
1724
1725
1726
1727
1728
1729
1730
1731
 
# File 'ext/curses/curses.c', line 1718

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.



1739
1740
1741
1742
1743
1744
1745
1746
1747
1748
 
# File 'ext/curses/curses.c', line 1739

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

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

    return Qnil;
}

#refresh ⇒ Object

Refreshes the windows and lines.



1699
1700
1701
1702
1703
1704
1705
1706
1707
1708
 
# File 'ext/curses/curses.c', line 1699

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



2659
2660
2661
2662
2663
2664
2665
2666
2667
2668
2669
2670
 
# File 'ext/curses/curses.c', line 2659

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.



2484
2485
2486
2487
2488
2489
2490
2491
2492
2493
2494
2495
2496
 
# File 'ext/curses/curses.c', line 2484

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.



2462
2463
2464
2465
2466
2467
2468
2469
2470
 
# File 'ext/curses/curses.c', line 2462

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)



2371
2372
2373
2374
2375
2376
2377
2378
2379
 
# File 'ext/curses/curses.c', line 2371

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



1920
1921
1922
1923
1924
1925
1926
1927
1928
 
# File 'ext/curses/curses.c', line 1920

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.



2421
2422
2423
2424
2425
2426
2427
2428
2429
2430
2431
2432
2433
2434
2435
 
# File 'ext/curses/curses.c', line 2421

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



2122
2123
2124
2125
2126
2127
2128
2129
2130
 
# File 'ext/curses/curses.c', line 2122

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



2103
2104
2105
2106
2107
2108
2109
2110
2111
 
# File 'ext/curses/curses.c', line 2103

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.



1573
1574
1575
1576
1577
1578
1579
1580
1581
1582
1583
1584
1585
1586
1587
1588
1589
1590
 
# File 'ext/curses/curses.c', line 1573

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.



2763
2764
2765
2766
2767
2768
2769
2770
2771
 
# File 'ext/curses/curses.c', line 2763

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.



1759
1760
1761
1762
1763
1764
1765
1766
1767
1768
 
# File 'ext/curses/curses.c', line 1759

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.



1820
1821
1822
1823
1824
1825
1826
1827
1828
1829
1830
1831
1832
1833
1834
1835
1836
1837
1838
1839
1840
1841
 
# File 'ext/curses/curses.c', line 1820

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) 


1800
1801
1802
1803
1804
1805
1806
1807
 
# File 'ext/curses/curses.c', line 1800

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.



1780
1781
1782
1783
1784
1785
1786
1787
1788
1789
 
# File 'ext/curses/curses.c', line 1780

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

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

    return Qnil;
}