Class: Curses::Pad

Inherits:

Window

• Object
• Data
• Window
• Curses::Pad

Defined in:

ext/curses/curses.c,
ext/curses/curses.c

Overview

Description

A Pad is like a Window but allows for scrolling of contents that cannot fit on the screen. Pads do not refresh automatically, use Pad#refresh or Pad#noutrefresh instead.

Instance Method Summary

• #initialize(h, w) ⇒ Object constructor

  call-seq: new(height, width).

• #noutrefresh(pminrow, pmincol, sminrow, smincol, smaxrow, smaxcol) ⇒ Object

  call-seq: pad.noutrefresh(pad_minrow, pad_mincol, screen_minrow, screen_mincol, screen_maxrow, screen_maxcol).

• #refresh(pminrow, pmincol, sminrow, smincol, smaxrow, smaxcol) ⇒ Object

  call-seq: pad.refresh(pad_minrow, pad_mincol, screen_minrow, screen_mincol, screen_maxrow, screen_maxcol).

• #subpad(height, width, begin_x, begin_y) ⇒ Object

  Construct a new subpad with constraints of height lines, width columns, begin at begin_x line, and begin_y columns on the pad.

Methods inherited from Window

#<<, #addch, #addstr, #attroff, #attron, #attrset, #begx, #begy, #bkgd, #bkgdset, #box, #clear, #close, #clrtoeol, #color_set, #curx, #cury, #delch, #deleteln, #getbkgd, #getch, #getstr, #idlok, #inch, #insch, #insertln, #keypad, #keypad=, #maxx, #maxy, #move, #nodelay=, #resize, #scrl, #scroll, #scrollok, #setpos, #setscrreg, #standend, #standout, #subwin, #timeout=

Constructor Details

#initialize(h, w) ⇒ Object

call-seq:

new(height, width)

Construct a new Curses::Pad with constraints of height lines, width columns

# File 'ext/curses/curses.c', line 2508

static VALUE
pad_initialize(VALUE obj, VALUE h, VALUE w)
{
    struct windata *padp;
    WINDOW *window;

    curses_init_screen();
    TypedData_Get_Struct(obj, struct windata, &windata_type, padp);
    if (padp->window) delwin(padp->window);
    window = newpad(NUM2INT(h), NUM2INT(w));
    wclear(window);
    padp->window = window;

    return obj;
}

Instance Method Details

#noutrefresh(pminrow, pmincol, sminrow, smincol, smaxrow, smaxcol) ⇒ Object

call-seq:

pad.noutrefresh(pad_minrow, pad_mincol, screen_minrow, screen_mincol, screen_maxrow, screen_maxcol)

Refreshes the pad. pad_minrow and pad_mincol+ define the upper-left corner of the rectangle to be displayed. screen_minrow, screen_mincol, screen_maxrow, screen_maxcol define the edges of the rectangle to be displayed on the screen.

# File 'ext/curses/curses.c', line 2600

static VALUE
pad_noutrefresh(VALUE obj, VALUE pminrow, VALUE pmincol, VALUE sminrow,
		VALUE smincol, VALUE smaxrow, VALUE smaxcol)
{
    struct windata *padp;
    int pmr, pmc, smr, smc, sxr, sxc;

    pmr = NUM2INT(pminrow);
    pmc = NUM2INT(pmincol);
    smr = NUM2INT(sminrow);
    smc = NUM2INT(smincol);
    sxr = NUM2INT(smaxrow);
    sxc = NUM2INT(smaxcol);

    GetWINDOW(obj, padp);
#ifdef HAVE_DOUPDATE
    pnoutrefresh(padp->window, pmr, pmc, smr, smc, sxr, sxc);
#else
    prefresh(padp->window, pmr, pmc, smr, smc, sxr, sxc);
#endif

    return Qnil;
}

#refresh(pminrow, pmincol, sminrow, smincol, smaxrow, smaxcol) ⇒ Object

call-seq:

pad.refresh(pad_minrow, pad_mincol, screen_minrow, screen_mincol, screen_maxrow, screen_maxcol)

Refreshes the pad. pad_minrow and pad_mincol+ define the upper-left corner of the rectangle to be displayed. screen_minrow, screen_mincol, screen_maxrow, screen_maxcol define the edges of the rectangle to be displayed on the screen.

# File 'ext/curses/curses.c', line 2568

static VALUE
pad_refresh(VALUE obj, VALUE pminrow, VALUE pmincol, VALUE sminrow,
	    VALUE smincol, VALUE smaxrow, VALUE smaxcol)
{
    struct windata *padp;
    int pmr, pmc, smr, smc, sxr, sxc;

    pmr = NUM2INT(pminrow);
    pmc = NUM2INT(pmincol);
    smr = NUM2INT(sminrow);
    smc = NUM2INT(smincol);
    sxr = NUM2INT(smaxrow);
    sxc = NUM2INT(smaxcol);

    GetWINDOW(obj, padp);
    prefresh(padp->window, pmr, pmc, smr, smc, sxr, sxc);

    return Qnil;
}

#subpad(height, width, begin_x, begin_y) ⇒ Object

Construct a new subpad with constraints of height lines, width columns, begin at begin_x line, and begin_y columns on the pad.

# File 'ext/curses/curses.c', line 2536

static VALUE
pad_subpad(VALUE obj, VALUE height, VALUE width, VALUE begin_x, VALUE begin_y)
{
    struct windata *padp;
    WINDOW *subpad;
    VALUE pad;
    int h, w, x, y;

    h = NUM2INT(height);
    w = NUM2INT(width);
    x = NUM2INT(begin_x);
    y = NUM2INT(begin_y);
    GetWINDOW(obj, padp);
    subpad = subwin(padp->window, h, w, x, y);
    pad = prep_window(rb_obj_class(obj), subpad);

    return pad;
}