Module: Curses
- Defined in:
- ext/curses/curses.c,
ext/curses/curses.c
Overview
Description
An implementation of the CRT screen handling and optimization library.
Structures and such
Classes
-
Curses::Window - class with the means to draw a window or box
-
Curses::MouseEvent - class for collecting mouse events
Modules
- Curses
-
The curses implementation
- Curses::Key
-
Collection of constants for keypress events
Examples
-
hello.rb
:include: sample/hello.rb
-
rain.rb
:include: sample/rain.rb
Defined Under Namespace
Modules: Key Classes: Error, Item, Menu, MouseEvent, Pad, Window
Constant Summary collapse
- VERSION =
Identifies curses library version.
-
“ncurses 5.9.20110404”
-
“PDCurses 3.4 - Public Domain 2008”
-
“curses (SVR4)” (System V curses)
-
“curses (unknown)” (The original BSD curses? NetBSD maybe.)
-
version
Class Method Summary collapse
-
.addch(ch) ⇒ Object
Add a character
ch
, with attributes, then advance the cursor. -
.addstr(str) ⇒ Object
add a string of characters
str
, to the window and advance cursor. -
.assume_default_colors(fg, bg) ⇒ Object
tells which colors to paint for color pair 0.
-
.attroff(attrs) ⇒ Object
Turns off the named attributes
attrs
without affecting any others. -
.attron(attrs) ⇒ Object
Turns on the named attributes
attrs
without turning any other attributes on or off. -
.attrset(attrs) ⇒ Object
Sets the current attributes of the given window to
attrs
. -
.beep ⇒ Object
Sounds an audible alarm on the terminal, if possible; otherwise it flashes the screen (visual bell).
-
.bkgd(ch) ⇒ Object
Window background manipulation routines.
-
.bkgdset(ch) ⇒ Object
Manipulate the background of the named window with character Integer
ch
. -
.can_change_color? ⇒ Boolean
Returns
true
orfalse
depending on whether the terminal can change color attributes. -
.cbreak ⇒ Object
Put the terminal into cbreak mode.
-
.clear ⇒ Object
Clears every position on the screen completely, so that a subsequent call by Curses.refresh for the screen/window will be repainted from scratch.
-
.close_screen ⇒ Object
A program should always call Curses.close_screen before exiting or escaping from curses mode temporarily.
-
.closed? ⇒ Boolean
Returns
true
if the window/screen has been closed, without any subsequent Curses.refresh calls, returnsfalse
otherwise. -
.clrtoeol ⇒ Object
Clears to the end of line, that the cursor is currently on.
-
.color_content(color) ⇒ Object
Returns an 3 item Array of the RGB values in
color
. -
.color_pair(attrs) ⇒ Object
Sets the color pair attributes to
attrs
. -
.color_pairs ⇒ Object
Returns the COLOR_PAIRS available, if the curses library supports it.
-
.colors ⇒ Object
returns COLORS.
-
.cols ⇒ Object
Returns the number of columns on the screen.
-
.crmode ⇒ Object
Put the terminal into cbreak mode.
-
.curs_set(visibility) ⇒ Object
Sets Cursor Visibility.
-
.def_prog_mode ⇒ Object
Save the current terminal modes as the “program” state for use by the Curses.reset_prog_mode.
-
.delch ⇒ Object
Delete the character under the cursor.
-
.deleteln ⇒ Object
Delete the line under the cursor.
-
.doupdate ⇒ Object
Refreshes the windows and lines.
-
.echo ⇒ Object
Enables characters typed by the user to be echoed by Curses.getch as they are typed.
-
.erase ⇒ Object
Erase the screen.
-
.ESCDELAY ⇒ Object
Returns the total time, in milliseconds, for which curses will await a character sequence, e.g., a function key.
-
.ESCDELAY=(value) ⇒ Object
Sets the ESCDELAY to Integer
value
. -
.flash ⇒ Object
Flashes the screen, for visual alarm on the terminal, if possible; otherwise it sounds the alert.
-
.get_char ⇒ Object
Read and returns a character or function key from the window.
- .get_key_modifiers ⇒ Object
-
.getch ⇒ Object
Read and returns a character from the window.
-
.getmouse ⇒ Object
Returns coordinates of the mouse.
-
.getstr ⇒ Object
This is equivalent to a series f Curses::Window.getch calls.
-
.has_colors? ⇒ Boolean
Returns
true
orfalse
depending on whether the terminal has color capabilities. -
.inch ⇒ Object
Returns the character at the current position.
-
.init_color(color, r, g, b) ⇒ Object
Changes the definition of a color.
-
.init_pair(pair, f, b) ⇒ Object
Changes the definition of a color-pair.
-
.init_screen ⇒ Object
Initialize a standard screen.
-
.insch(ch) ⇒ Object
Insert a character
ch
, before the cursor. -
.insertln ⇒ Object
Inserts a line above the cursor, and the bottom line is lost.
-
.keyboard_encoding ⇒ Object
Returns the encoding for keyboard input.
-
.keyboard_encoding=(encoding) ⇒ Object
Sets the encoding for keyboard input.
-
.keyname(c) ⇒ Object
Returns the character string corresponding to key
c
. -
.lines ⇒ Object
Returns the number of lines on the screen.
-
.mouseinterval(interval) ⇒ Object
The Curses.mouseinterval function sets the maximum time (in thousands of a second) that can elapse between press and release events for them to be recognized as a click.
-
.mousemask(mask) ⇒ Object
Returns the
mask
of the reportable events. -
.nl ⇒ Object
Enable the underlying display device to translate the return key into newline on input, and whether it translates newline into return and line-feed on output (in either case, the call Curses.addch(‘n’) does the equivalent of return and line feed on the virtual screen).
-
.nocbreak ⇒ Object
Put the terminal into normal mode (out of cbreak mode).
-
.nocrmode ⇒ Object
Put the terminal into normal mode (out of cbreak mode).
-
.noecho ⇒ Object
Disables characters typed by the user to be echoed by Curses.getch as they are typed.
-
.nonl ⇒ Object
Disable the underlying display device to translate the return key into newline on input.
-
.noraw ⇒ Object
Put the terminal out of raw mode.
-
.pair_content(pair) ⇒ Object
Returns a 2 item Array, with the foreground and background color, in
pair
. -
.pair_number(attrs) ⇒ Object
Returns the Fixnum color pair number of attributes
attrs
. -
.raw ⇒ Object
Put the terminal into raw mode.
-
.refresh ⇒ Object
Refreshes the windows and lines.
-
.reset_prog_mode ⇒ Object
Reset the current terminal modes to the saved state by the Curses.def_prog_mode.
-
.resizeterm(lines, cols) ⇒ Object
Resize the current term to Fixnum
lines
and Fixnumcols
. -
.resizeterm(lines, cols) ⇒ Object
Resize the current term to Fixnum
lines
and Fixnumcols
. - .return_key_modifiers(flag) ⇒ Object
- .save_key_modifiers(flag) ⇒ Object
-
.scrl(num) ⇒ Object
Scrolls the current window Fixnum
num
lines. -
.setpos(y, x) ⇒ Object
A setter for the position of the cursor, using coordinates
x
andy
. -
.setscrreg(top, bottom) ⇒ Object
call-seq: setscrreg(top, bottom).
-
.standend ⇒ Object
Enables the Normal display (no highlight).
-
.standout ⇒ Object
Enables the best highlighting mode of the terminal.
-
.start_color ⇒ Object
Initializes the color attributes, for terminals that support it.
-
.stdscr ⇒ Object
The Standard Screen.
-
.TABSIZE ⇒ Object
Returns the number of positions in a tab.
-
.TABSIZE=(value) ⇒ Object
Sets the TABSIZE to Integer
value
. -
.terminal_encoding ⇒ Object
Returns the encoding for terminal output.
-
.terminal_encoding=(encoding) ⇒ Object
Sets the encoding for terminal output.
-
.timeout=(delay) ⇒ Object
Sets block and non-blocking reads for the window.
-
.unget_char(ch) ⇒ Object
Places
ch
back onto the input queue to be returned by the next call to Curses.get_char etc. -
.ungetch(ch) ⇒ Object
Places
ch
back onto the input queue to be returned by the next call to Curses.getch. -
.ungetmouse(mevent) ⇒ Object
It pushes a KEY_MOUSE event onto the input queue, and associates with that event the given state data and screen-relative character-cell coordinates.
-
.use_default_colors ⇒ Object
tells the curses library to use terminal’s default colors.
Class Method Details
.addch(ch) ⇒ Object
Add a character ch
, with attributes, then advance the cursor.
see also the system manual for curs_addch(3)
746 747 748 749 750 751 752 |
# File 'ext/curses/curses.c', line 746
static VALUE
curses_addch(VALUE obj, VALUE ch)
{
curses_stdscr();
addch(NUM2CH(ch));
return Qnil;
}
|
.addstr(str) ⇒ Object
add a string of characters str
, to the window and advance cursor
776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 |
# File 'ext/curses/curses.c', line 776
static VALUE
curses_addstr(VALUE obj, VALUE str)
{
StringValue(str);
#if defined(HAVE_ADDNWSTR) && defined(_WIN32)
str = rb_str_export_to_enc(str, get_wide_encoding());
curses_stdscr();
if (!NIL_P(str)) {
addnwstr((wchar_t *)RSTRING_PTR(str), RSTRING_LEN(str) / sizeof(wchar_t));
}
#else
str = rb_str_export_to_enc(str, terminal_encoding);
curses_stdscr();
if (!NIL_P(str)) {
addstr(StringValueCStr(str));
}
#endif
return Qnil;
}
|
.assume_default_colors(fg, bg) ⇒ Object
tells which colors to paint for color pair 0.
see also the system manual for default_colors(3)
1144 1145 1146 1147 1148 1149 1150 |
# File 'ext/curses/curses.c', line 1144
static VALUE
curses_assume_default_colors(VALUE obj, VALUE fg, VALUE bg)
{
curses_stdscr();
assume_default_colors(NUM2INT(fg), NUM2INT(bg));
return Qnil;
}
|
.attroff(attrs) ⇒ Object
Turns off the named attributes attrs
without affecting any others.
See also Curses::Window.attrset for additional information.
1034 1035 1036 1037 1038 1039 1040 |
# File 'ext/curses/curses.c', line 1034
static VALUE
curses_attroff(VALUE obj, VALUE attrs)
{
curses_stdscr();
return window_attroff(rb_stdscr,attrs);
/* return INT2FIX(attroff(NUM2INT(attrs))); */
}
|
.attron(attrs) ⇒ Object
Turns on the named attributes attrs
without turning any other attributes on or off.
See also Curses::Window.attrset for additional information.
1051 1052 1053 1054 1055 1056 1057 |
# File 'ext/curses/curses.c', line 1051
static VALUE
curses_attron(VALUE obj, VALUE attrs)
{
curses_stdscr();
return window_attron(rb_stdscr,attrs);
/* return INT2FIX(attroff(NUM2INT(attrs))); */
}
|
.attrset(attrs) ⇒ Object
Sets the current attributes of the given window to attrs
.
see also Curses::Window.attrset
1068 1069 1070 1071 1072 1073 1074 |
# File 'ext/curses/curses.c', line 1068
static VALUE
curses_attrset(VALUE obj, VALUE attrs)
{
curses_stdscr();
return window_attrset(rb_stdscr,attrs);
/* return INT2FIX(attroff(NUM2INT(attrs))); */
}
|
.beep ⇒ Object
Sounds an audible alarm on the terminal, if possible; otherwise it flashes the screen (visual bell).
see also Curses.flash
605 606 607 608 609 610 611 612 613 |
# File 'ext/curses/curses.c', line 605
static VALUE
curses_beep(VALUE obj)
{
#ifdef HAVE_BEEP
curses_stdscr();
beep();
#endif
return Qnil;
}
|
.bkgd(ch) ⇒ Object
Window background manipulation routines.
Set the background property of the current and then apply the character Integer ch
setting to every character position in that window.
see also the system manual for curs_bkgd(3)
1110 1111 1112 1113 1114 1115 1116 1117 1118 1119 |
# File 'ext/curses/curses.c', line 1110
static VALUE
curses_bkgd(VALUE obj, VALUE ch)
{
#ifdef HAVE_BKGD
curses_stdscr();
return (bkgd(NUM2CHTYPE(ch)) == OK) ? Qtrue : Qfalse;
#else
return Qfalse;
#endif
}
|
.bkgdset(ch) ⇒ Object
Manipulate the background of the named window with character Integer ch
The background becomes a property of the character and moves with the character through any scrolling and insert/delete line/character operations.
see also the system manual for curs_bkgd(3)
1089 1090 1091 1092 1093 1094 1095 1096 1097 |
# File 'ext/curses/curses.c', line 1089
static VALUE
curses_bkgdset(VALUE obj, VALUE ch)
{
#ifdef HAVE_BKGDSET
curses_stdscr();
bkgdset(NUM2CHTYPE(ch));
#endif
return Qnil;
}
|
.can_change_color? ⇒ Boolean
Returns true
or false
depending on whether the terminal can change color attributes
1322 1323 1324 1325 1326 1327 |
# File 'ext/curses/curses.c', line 1322
static VALUE
curses_can_change_color(VALUE obj)
{
curses_stdscr();
return can_change_color() ? Qtrue : Qfalse;
}
|
.cbreak ⇒ Object
Put the terminal into cbreak mode.
Normally, the tty driver buffers typed characters until a newline or carriage return is typed. The Curses.cbreak routine disables line buffering and erase/kill character-processing (interrupt and flow control characters are unaffected), making characters typed by the user immediately available to the program.
The Curses.nocbreak routine returns the terminal to normal (cooked) mode.
Initially the terminal may or may not be in cbreak mode, as the mode is inherited; therefore, a program should call Curses.cbreak or Curses.nocbreak explicitly. Most interactive programs using curses set the cbreak mode. Note that Curses.cbreak overrides Curses.raw.
see also Curses.raw
536 537 538 539 540 541 542 |
# File 'ext/curses/curses.c', line 536
static VALUE
curses_cbreak(VALUE obj)
{
curses_stdscr();
cbreak();
return Qnil;
}
|
.clear ⇒ Object
Clears every position on the screen completely, so that a subsequent call by Curses.refresh for the screen/window will be repainted from scratch.
377 378 379 380 381 382 383 |
# File 'ext/curses/curses.c', line 377
static VALUE
curses_clear(VALUE obj)
{
curses_stdscr();
wclear(stdscr);
return Qnil;
}
|
.close_screen ⇒ Object
A program should always call Curses.close_screen before exiting or escaping from curses mode temporarily. This routine restores tty modes, moves the cursor to the lower left-hand corner of the screen and resets the terminal into the proper non-visual mode.
Calling Curses.refresh or Curses.doupdate after a temporary escape causes the program to resume visual mode.
317 318 319 320 321 322 323 324 325 326 327 |
# File 'ext/curses/curses.c', line 317
static VALUE
curses_close_screen(void)
{
curses_stdscr();
#ifdef HAVE_ISENDWIN
if (!isendwin())
#endif
endwin();
rb_stdscr = 0;
return Qnil;
}
|
.closed? ⇒ Boolean
Returns true
if the window/screen has been closed, without any subsequent Curses.refresh calls, returns false
otherwise.
357 358 359 360 361 362 363 364 365 |
# File 'ext/curses/curses.c', line 357
static VALUE
curses_closed(void)
{
curses_stdscr();
if (isendwin()) {
return Qtrue;
}
return Qfalse;
}
|
.clrtoeol ⇒ Object
Clears to the end of line, that the cursor is currently on.
407 408 409 410 411 412 413 |
# File 'ext/curses/curses.c', line 407
static VALUE
curses_clrtoeol(void)
{
curses_stdscr();
clrtoeol();
return Qnil;
}
|
.color_content(color) ⇒ Object
Returns an 3 item Array of the RGB values in color
1350 1351 1352 1353 1354 1355 1356 1357 1358 |
# File 'ext/curses/curses.c', line 1350
static VALUE
curses_color_content(VALUE obj, VALUE color)
{
short r,g,b;
curses_stdscr();
color_content(NUM2INT(color),&r,&g,&b);
return rb_ary_new3(3,INT2FIX(r),INT2FIX(g),INT2FIX(b));
}
|
.color_pair(attrs) ⇒ Object
Sets the color pair attributes to attrs
.
This should be equivalent to Curses.attrset(COLOR_PAIR(attrs
))
TODO: validate that equivalency
1403 1404 1405 1406 1407 |
# File 'ext/curses/curses.c', line 1403
static VALUE
curses_color_pair(VALUE obj, VALUE attrs)
{
return INT2FIX(COLOR_PAIR(NUM2INT(attrs)));
}
|
.color_pairs ⇒ Object
Returns the COLOR_PAIRS available, if the curses library supports it.
1367 1368 1369 1370 1371 |
# File 'ext/curses/curses.c', line 1367
static VALUE
curses_color_pairs(VALUE obj)
{
return INT2FIX(COLOR_PAIRS);
}
|
.colors ⇒ Object
returns COLORS
1335 1336 1337 1338 1339 |
# File 'ext/curses/curses.c', line 1335
static VALUE
curses_colors(VALUE obj)
{
return INT2FIX(COLORS);
}
|
.cols ⇒ Object
Returns the number of columns on the screen
947 948 949 950 951 |
# File 'ext/curses/curses.c', line 947
static VALUE
curses_cols(void)
{
return INT2FIX(COLS);
}
|
.crmode ⇒ Object
Put the terminal into cbreak mode.
Normally, the tty driver buffers typed characters until a newline or carriage return is typed. The Curses.cbreak routine disables line buffering and erase/kill character-processing (interrupt and flow control characters are unaffected), making characters typed by the user immediately available to the program.
The Curses.nocbreak routine returns the terminal to normal (cooked) mode.
Initially the terminal may or may not be in cbreak mode, as the mode is inherited; therefore, a program should call Curses.cbreak or Curses.nocbreak explicitly. Most interactive programs using curses set the cbreak mode. Note that Curses.cbreak overrides Curses.raw.
see also Curses.raw
536 537 538 539 540 541 542 |
# File 'ext/curses/curses.c', line 536
static VALUE
curses_cbreak(VALUE obj)
{
curses_stdscr();
cbreak();
return Qnil;
}
|
.curs_set(visibility) ⇒ Object
Sets Cursor Visibility. 0: invisible 1: visible 2: very visible
962 963 964 965 966 967 968 969 970 971 972 |
# File 'ext/curses/curses.c', line 962
static VALUE
curses_curs_set(VALUE obj, VALUE visibility)
{
#ifdef HAVE_CURS_SET
int n;
curses_stdscr();
return (n = curs_set(NUM2INT(visibility)) != ERR) ? INT2FIX(n) : Qnil;
#else
return Qnil;
#endif
}
|
.def_prog_mode ⇒ Object
Save the current terminal modes as the “program” state for use by the Curses.reset_prog_mode
This is done automatically by Curses.init_screen
1613 1614 1615 1616 1617 1618 |
# File 'ext/curses/curses.c', line 1613
static VALUE
curses_def_prog_mode(VALUE obj)
{
curses_stdscr();
return def_prog_mode() == OK ? Qtrue : Qfalse;
}
|
.delch ⇒ Object
Delete the character under the cursor
865 866 867 868 869 870 871 |
# File 'ext/curses/curses.c', line 865
static VALUE
curses_delch(VALUE obj)
{
curses_stdscr();
delch();
return Qnil;
}
|
.deleteln ⇒ Object
Delete the line under the cursor.
879 880 881 882 883 884 885 886 887 |
# File 'ext/curses/curses.c', line 879
static VALUE
curses_deleteln(VALUE obj)
{
curses_stdscr();
#if defined(HAVE_DELETELN) || defined(deleteln)
deleteln();
#endif
return Qnil;
}
|
.doupdate ⇒ Object
Refreshes the windows and lines.
Curses.doupdate allows multiple updates with more efficiency than Curses.refresh alone.
437 438 439 440 441 442 443 444 445 446 447 |
# File 'ext/curses/curses.c', line 437
static VALUE
curses_doupdate(VALUE obj)
{
curses_stdscr();
#ifdef HAVE_DOUPDATE
doupdate();
#else
refresh();
#endif
return Qnil;
}
|
.echo ⇒ Object
Enables characters typed by the user to be echoed by Curses.getch as they are typed.
455 456 457 458 459 460 461 |
# File 'ext/curses/curses.c', line 455
static VALUE
curses_echo(VALUE obj)
{
curses_stdscr();
echo();
return Qnil;
}
|
.erase ⇒ Object
Erase the screen.
391 392 393 394 395 396 397 |
# File 'ext/curses/curses.c', line 391
static VALUE
curses_erase(VALUE obj)
{
curses_stdscr();
werase(stdscr);
return Qnil;
}
|
.ESCDELAY ⇒ Object
Returns the total time, in milliseconds, for which curses will await a character sequence, e.g., a function key
1206 1207 1208 1209 1210 |
# File 'ext/curses/curses.c', line 1206
static VALUE
curses_escdelay_get(VALUE obj)
{
return INT2NUM(ESCDELAY);
}
|
.ESCDELAY=(value) ⇒ Object
Sets the ESCDELAY to Integer value
1191 1192 1193 1194 1195 1196 |
# File 'ext/curses/curses.c', line 1191
static VALUE
curses_escdelay_set(VALUE obj, VALUE val)
{
ESCDELAY = NUM2INT(val);
return INT2NUM(ESCDELAY);
}
|
.flash ⇒ Object
Flashes the screen, for visual alarm on the terminal, if possible; otherwise it sounds the alert.
see also Curses.beep
623 624 625 626 627 628 629 630 631 |
# File 'ext/curses/curses.c', line 623
static VALUE
curses_flash(VALUE obj)
{
#ifdef HAVE_FLASH
curses_stdscr();
flash();
#endif
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
3548 3549 3550 3551 3552 3553 3554 3555 3556 3557 3558 3559 3560 3561 3562 3563 3564 3565 3566 3567 3568 3569 3570 3571 3572 3573 3574 3575 3576 3577 3578 |
# File 'ext/curses/curses.c', line 3548
static VALUE
curses_get_char(VALUE obj)
{
#ifdef HAVE_GET_WCH
struct get_wch_arg arg;
curses_stdscr();
rb_thread_call_without_gvl(get_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
int c;
curses_stdscr();
rb_thread_call_without_gvl(getch_func, &c, RUBY_UBF_IO, 0);
if (c > 0xff) {
return INT2NUM(c);
}
else if (c >= 0) {
return keyboard_uint_chr(c);
}
else {
return Qnil;
}
#endif
}
|
.get_key_modifiers ⇒ Object
3645 3646 3647 3648 3649 |
# File 'ext/curses/curses.c', line 3645
static VALUE
curses_get_key_modifiers(VALUE obj)
{
return ULONG2NUM(PDC_get_key_modifiers());
}
|
.getch ⇒ Object
Read and returns a character from the window.
See Curses::Key to all the function KEY_* available
812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 |
# File 'ext/curses/curses.c', line 812
static VALUE
curses_getch(VALUE obj)
{
int c;
curses_stdscr();
rb_thread_call_without_gvl(getch_func, &c, RUBY_UBF_IO, 0);
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);
}
|
.getmouse ⇒ Object
Returns coordinates of the mouse.
This will read and pop the mouse event data off the queue
See the BUTTON*, ALL_MOUSE_EVENTS and REPORT_MOUSE_POSITION constants, to examine the mask of the event
1473 1474 1475 1476 1477 1478 1479 1480 1481 1482 1483 1484 |
# File 'ext/curses/curses.c', line 1473
static VALUE
curses_getmouse(VALUE obj)
{
struct mousedata *mdata;
VALUE val;
curses_stdscr();
val = TypedData_Make_Struct(cMouseEvent,struct mousedata,
&mousedata_type,mdata);
mdata->mevent = (MEVENT*)xmalloc(sizeof(MEVENT));
return (getmouse(mdata->mevent) == OK) ? val : Qnil;
}
|
.getstr ⇒ Object
This is equivalent to a series f Curses::Window.getch calls
849 850 851 852 853 854 855 856 857 |
# File 'ext/curses/curses.c', line 849
static VALUE
curses_getstr(VALUE obj)
{
char rtn[GETSTR_BUF_SIZE];
curses_stdscr();
rb_thread_call_without_gvl(getstr_func, rtn, RUBY_UBF_IO, 0);
return rb_external_str_new_with_enc(rtn, strlen(rtn), keyboard_encoding);
}
|
.has_colors? ⇒ Boolean
Returns true
or false
depending on whether the terminal has color capabilities.
1310 1311 1312 1313 1314 1315 |
# File 'ext/curses/curses.c', line 1310
static VALUE
curses_has_colors(VALUE obj)
{
curses_stdscr();
return has_colors() ? Qtrue : Qfalse;
}
|
.inch ⇒ Object
Returns the character at the current position.
731 732 733 734 735 736 |
# File 'ext/curses/curses.c', line 731
static VALUE
curses_inch(VALUE obj)
{
curses_stdscr();
return CH2FIX(inch());
}
|
.init_color(color, r, g, b) ⇒ Object
Changes the definition of a color. It takes four arguments:
-
the number of the color to be changed,
color
-
the amount of red,
r
-
the amount of green,
g
-
the amount of blue,
b
The value of the first argument must be between 0 and COLORS. (See the section Colors for the default color index.) Each of the last three arguments must be a value between 0 and 1000. When Curses.init_color is used, all occurrences of that color on the screen immediately change to the new definition.
1296 1297 1298 1299 1300 1301 1302 1303 |
# File 'ext/curses/curses.c', line 1296
static VALUE
curses_init_color(VALUE obj, VALUE color, VALUE r, VALUE g, VALUE b)
{
/* may have to raise exception on ERR */
curses_stdscr();
return (init_color(NUM2INT(color),NUM2INT(r),
NUM2INT(g),NUM2INT(b)) == OK) ? Qtrue : Qfalse;
}
|
.init_pair(pair, f, b) ⇒ Object
Changes the definition of a color-pair.
It takes three arguments: the number of the color-pair to be changed pair
, the foreground color number f
, and the background color number b
.
If the color-pair was previously initialized, the screen is refreshed and all occurrences of that color-pair are changed to the new definition.
1272 1273 1274 1275 1276 1277 1278 |
# File 'ext/curses/curses.c', line 1272
static VALUE
curses_init_pair(VALUE obj, VALUE pair, VALUE f, VALUE b)
{
/* may have to raise exception on ERR */
curses_stdscr();
return (init_pair(NUM2INT(pair),NUM2INT(f),NUM2INT(b)) == OK) ? Qtrue : Qfalse;
}
|
.init_screen ⇒ Object
Initialize a standard screen
see also Curses.stdscr
278 279 280 281 282 283 284 285 286 287 288 289 290 |
# File 'ext/curses/curses.c', line 278
static VALUE
curses_init_screen(void)
{
if (rb_stdscr) return rb_stdscr;
initscr();
if (stdscr == 0) {
rb_raise(rb_eRuntimeError, "can't initialize curses");
}
rb_set_end_proc(curses_finalize, 0);
clear();
rb_stdscr = prep_window(cWindow, stdscr);
return rb_stdscr;
}
|
.insch(ch) ⇒ Object
Insert a character ch
, before the cursor.
761 762 763 764 765 766 767 |
# File 'ext/curses/curses.c', line 761
static VALUE
curses_insch(VALUE obj, VALUE ch)
{
curses_stdscr();
insch(NUM2CH(ch));
return Qnil;
}
|
.insertln ⇒ Object
Inserts a line above the cursor, and the bottom line is lost
895 896 897 898 899 900 901 902 903 |
# File 'ext/curses/curses.c', line 895
static VALUE
curses_insertln(VALUE obj)
{
curses_stdscr();
#if defined(HAVE_INSERTLN) || defined(insertln)
insertln();
#endif
return Qnil;
}
|
.keyboard_encoding ⇒ Object
Returns the encoding for keyboard input.
3437 3438 3439 3440 3441 |
# File 'ext/curses/curses.c', line 3437
static VALUE
curses_get_keyboard_encoding(VALUE obj)
{
return rb_enc_from_encoding(keyboard_encoding);
}
|
.keyboard_encoding=(encoding) ⇒ Object
Sets the encoding for keyboard input.
3449 3450 3451 3452 3453 3454 |
# File 'ext/curses/curses.c', line 3449
static VALUE
curses_set_keyboard_encoding(VALUE obj, VALUE enc)
{
keyboard_encoding = rb_to_encoding(enc);
return enc;
}
|
.keyname(c) ⇒ Object
Returns the character string corresponding to key c
911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 |
# File 'ext/curses/curses.c', line 911
static VALUE
curses_keyname(VALUE obj, VALUE c)
{
#ifdef HAVE_KEYNAME
int cc = curses_char(c);
const char *name;
curses_stdscr();
name = keyname(cc);
if (name) {
return rb_str_new_cstr(name);
}
else {
return Qnil;
}
#else
return Qnil;
#endif
}
|
.lines ⇒ Object
Returns the number of lines on the screen
936 937 938 939 940 |
# File 'ext/curses/curses.c', line 936
static VALUE
curses_lines(void)
{
return INT2FIX(LINES);
}
|
.mouseinterval(interval) ⇒ Object
The Curses.mouseinterval function sets the maximum time (in thousands of a second) that can elapse between press and release events for them to be recognized as a click.
Use Curses.mouseinterval(0) to disable click resolution. This function returns the previous interval value.
Use Curses.mouseinterval(-1) to obtain the interval without altering it.
The default is one sixth of a second.
1520 1521 1522 1523 1524 1525 |
# File 'ext/curses/curses.c', line 1520
static VALUE
curses_mouseinterval(VALUE obj, VALUE interval)
{
curses_stdscr();
return mouseinterval(NUM2INT(interval)) ? Qtrue : Qfalse;
}
|
.mousemask(mask) ⇒ Object
Returns the mask
of the reportable events
1533 1534 1535 1536 1537 1538 |
# File 'ext/curses/curses.c', line 1533
static VALUE
curses_mousemask(VALUE obj, VALUE mask)
{
curses_stdscr();
return INT2NUM(mousemask(NUM2UINT(mask),NULL));
}
|
.nl ⇒ Object
Enable the underlying display device to translate the return key into newline on input, and whether it translates newline into return and line-feed on output (in either case, the call Curses.addch(‘n’) does the equivalent of return and line feed on the virtual screen).
Initially, these translations do occur. If you disable them using Curses.nonl, curses will be able to make better use of the line-feed capability, resulting in faster cursor motion. Also, curses will then be able to detect the return key.
573 574 575 576 577 578 579 |
# File 'ext/curses/curses.c', line 573
static VALUE
curses_nl(VALUE obj)
{
curses_stdscr();
nl();
return Qnil;
}
|
.nocbreak ⇒ Object
Put the terminal into normal mode (out of cbreak mode).
See Curses.cbreak for more detail.
551 552 553 554 555 556 557 |
# File 'ext/curses/curses.c', line 551
static VALUE
curses_nocbreak(VALUE obj)
{
curses_stdscr();
nocbreak();
return Qnil;
}
|
.nocrmode ⇒ Object
Put the terminal into normal mode (out of cbreak mode).
See Curses.cbreak for more detail.
551 552 553 554 555 556 557 |
# File 'ext/curses/curses.c', line 551
static VALUE
curses_nocbreak(VALUE obj)
{
curses_stdscr();
nocbreak();
return Qnil;
}
|
.noecho ⇒ Object
Disables characters typed by the user to be echoed by Curses.getch as they are typed.
469 470 471 472 473 474 475 |
# File 'ext/curses/curses.c', line 469
static VALUE
curses_noecho(VALUE obj)
{
curses_stdscr();
noecho();
return Qnil;
}
|
.nonl ⇒ Object
Disable the underlying display device to translate the return key into newline on input
See Curses.nl for more detail
589 590 591 592 593 594 595 |
# File 'ext/curses/curses.c', line 589
static VALUE
curses_nonl(VALUE obj)
{
curses_stdscr();
nonl();
return Qnil;
}
|
.noraw ⇒ Object
Put the terminal out of raw mode.
see Curses.raw for more detail
506 507 508 509 510 511 512 |
# File 'ext/curses/curses.c', line 506
static VALUE
curses_noraw(VALUE obj)
{
curses_stdscr();
noraw();
return Qnil;
}
|
.pair_content(pair) ⇒ Object
Returns a 2 item Array, with the foreground and background color, in pair
1383 1384 1385 1386 1387 1388 1389 1390 1391 |
# File 'ext/curses/curses.c', line 1383
static VALUE
curses_pair_content(VALUE obj, VALUE pair)
{
short f,b;
curses_stdscr();
pair_content(NUM2INT(pair),&f,&b);
return rb_ary_new3(2,INT2FIX(f),INT2FIX(b));
}
|
.pair_number(attrs) ⇒ Object
Returns the Fixnum color pair number of attributes attrs
.
1415 1416 1417 1418 1419 1420 |
# File 'ext/curses/curses.c', line 1415
static VALUE
curses_pair_number(VALUE obj, VALUE attrs)
{
curses_stdscr();
return INT2FIX(PAIR_NUMBER(NUM2LONG(attrs)));
}
|
.raw ⇒ Object
Put the terminal into raw mode.
Raw mode is similar to Curses.cbreak mode, in that characters typed are immediately passed through to the user program.
The differences are that in raw mode, the interrupt, quit, suspend, and flow control characters are all passed through uninterpreted, instead of generating a signal. The behavior of the BREAK key depends on other bits in the tty driver that are not set by curses.
491 492 493 494 495 496 497 |
# File 'ext/curses/curses.c', line 491
static VALUE
curses_raw(VALUE obj)
{
curses_stdscr();
raw();
return Qnil;
}
|
.refresh ⇒ Object
Refreshes the windows and lines.
421 422 423 424 425 426 427 |
# File 'ext/curses/curses.c', line 421
static VALUE
curses_refresh(VALUE obj)
{
curses_stdscr();
refresh();
return Qnil;
}
|
.reset_prog_mode ⇒ Object
Reset the current terminal modes to the saved state by the Curses.def_prog_mode
This is done automatically by Curses.close_screen
1632 1633 1634 1635 1636 1637 |
# File 'ext/curses/curses.c', line 1632
static VALUE
curses_reset_prog_mode(VALUE obj)
{
curses_stdscr();
return reset_prog_mode() == OK ? Qtrue : Qfalse;
}
|
.resizeterm(lines, cols) ⇒ Object
Resize the current term to Fixnum lines
and Fixnum cols
1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 |
# File 'ext/curses/curses.c', line 1230
static VALUE
curses_resizeterm(VALUE obj, VALUE lin, VALUE col)
{
#if defined(HAVE_RESIZETERM)
curses_stdscr();
return (resizeterm(NUM2INT(lin),NUM2INT(col)) == OK) ? Qtrue : Qfalse;
#else
return Qnil;
#endif
}
|
.resizeterm(lines, cols) ⇒ Object
Resize the current term to Fixnum lines
and Fixnum cols
1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 |
# File 'ext/curses/curses.c', line 1230
static VALUE
curses_resizeterm(VALUE obj, VALUE lin, VALUE col)
{
#if defined(HAVE_RESIZETERM)
curses_stdscr();
return (resizeterm(NUM2INT(lin),NUM2INT(col)) == OK) ? Qtrue : Qfalse;
#else
return Qnil;
#endif
}
|
.return_key_modifiers(flag) ⇒ Object
3651 3652 3653 3654 3655 |
# File 'ext/curses/curses.c', line 3651
static VALUE
curses_return_key_modifiers(VALUE obj, VALUE flag)
{
return INT2NUM(PDC_return_key_modifiers(RTEST(flag)));
}
|
.save_key_modifiers(flag) ⇒ Object
3657 3658 3659 3660 3661 |
# File 'ext/curses/curses.c', line 3657
static VALUE
curses_save_key_modifiers(VALUE obj, VALUE flag)
{
return INT2NUM(PDC_save_key_modifiers(RTEST(flag)));
}
|
.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.
986 987 988 989 990 991 992 993 994 995 996 |
# File 'ext/curses/curses.c', line 986
static VALUE
curses_scrl(VALUE obj, VALUE n)
{
/* may have to raise exception on ERR */
#ifdef HAVE_SCRL
curses_stdscr();
return (scrl(NUM2INT(n)) == OK) ? Qtrue : Qfalse;
#else
return Qfalse;
#endif
}
|
.setpos(y, x) ⇒ Object
A setter for the position of the cursor, using coordinates x
and y
684 685 686 687 688 689 690 |
# File 'ext/curses/curses.c', line 684
static VALUE
curses_setpos(VALUE obj, VALUE y, VALUE x)
{
curses_stdscr();
move(NUM2INT(y), NUM2INT(x));
return Qnil;
}
|
.setscrreg(top, bottom) ⇒ Object
call-seq:
setscrreg(top, bottom)
Set a software scrolling region in a window. top
and bottom
are lines numbers of the margin.
If this option and Curses.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.
1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 |
# File 'ext/curses/curses.c', line 1013
static VALUE
curses_setscrreg(VALUE obj, VALUE top, VALUE bottom)
{
/* may have to raise exception on ERR */
#ifdef HAVE_SETSCRREG
curses_stdscr();
return (setscrreg(NUM2INT(top), NUM2INT(bottom)) == OK) ? Qtrue : Qfalse;
#else
return Qfalse;
#endif
}
|
.standend ⇒ Object
Enables the Normal display (no highlight)
This is equivalent to Curses.attron(A_NORMAL)
see also Curses::Window.attrset for additional information.
718 719 720 721 722 723 724 |
# File 'ext/curses/curses.c', line 718
static VALUE
curses_standend(VALUE obj)
{
curses_stdscr();
standend();
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 additional information
701 702 703 704 705 706 707 |
# File 'ext/curses/curses.c', line 701
static VALUE
curses_standout(VALUE obj)
{
curses_stdscr();
standout();
return Qnil;
}
|
.start_color ⇒ Object
Initializes the color attributes, for terminals that support it.
This must be called, in order to use color attributes. It is good practice to call it just after Curses.init_screen
1250 1251 1252 1253 1254 1255 1256 |
# File 'ext/curses/curses.c', line 1250
static VALUE
curses_start_color(VALUE obj)
{
/* may have to raise exception on ERR */
curses_stdscr();
return (start_color() == OK) ? Qtrue : Qfalse;
}
|
.stdscr ⇒ Object
The Standard Screen.
Upon initializing curses, a default window called stdscr, which is the size of the terminal screen, is created.
Many curses functions use this window.
.TABSIZE ⇒ Object
Returns the number of positions in a tab.
1176 1177 1178 1179 1180 |
# File 'ext/curses/curses.c', line 1176
static VALUE
curses_tabsize_get(VALUE ojb)
{
return INT2NUM(TABSIZE);
}
|
.TABSIZE=(value) ⇒ Object
Sets the TABSIZE to Integer value
1162 1163 1164 1165 1166 1167 |
# File 'ext/curses/curses.c', line 1162
static VALUE
curses_tabsize_set(VALUE obj, VALUE val)
{
TABSIZE = NUM2INT(val);
return INT2NUM(TABSIZE);
}
|
.terminal_encoding ⇒ Object
Returns the encoding for terminal output.
3462 3463 3464 3465 3466 |
# File 'ext/curses/curses.c', line 3462
static VALUE
curses_get_terminal_encoding(VALUE obj)
{
return rb_enc_from_encoding(terminal_encoding);
}
|
.terminal_encoding=(encoding) ⇒ Object
Sets the encoding for terminal output.
3474 3475 3476 3477 3478 3479 |
# File 'ext/curses/curses.c', line 3474
static VALUE
curses_set_terminal_encoding(VALUE obj, VALUE enc)
{
terminal_encoding = rb_to_encoding(enc);
return enc;
}
|
.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.
.unget_char(ch) ⇒ Object
Places ch
back onto the input queue to be returned by the next call to Curses.get_char etc.
There is just one input queue for all windows.
3490 3491 3492 3493 3494 3495 3496 3497 3498 3499 3500 3501 3502 3503 3504 3505 3506 3507 3508 3509 3510 3511 3512 3513 3514 |
# File 'ext/curses/curses.c', line 3490
static VALUE
curses_unget_char(VALUE obj, VALUE ch)
{
ID id_ord;
unsigned int c;
curses_stdscr();
if (FIXNUM_P(ch)) {
ungetch(NUM2UINT(ch));
}
else {
StringValue(ch);
CONST_ID(id_ord, "ord");
c = NUM2UINT(rb_funcall(ch, id_ord, 0));
#ifdef HAVE_UNGET_WCH
unget_wch(c);
#else
if (c > 0xff) {
rb_raise(rb_eRangeError, "Out of range: %u", c);
}
ungetch(c);
#endif
}
return Qnil;
}
|
.ungetch(ch) ⇒ Object
Places ch
back onto the input queue to be returned by the next call to Curses.getch.
There is just one input queue for all windows.
664 665 666 667 668 669 670 671 |
# File 'ext/curses/curses.c', line 664
static VALUE
curses_ungetch(VALUE obj, VALUE ch)
{
int c = curses_char(ch);
curses_stdscr();
ungetch(c);
return Qnil;
}
|
.ungetmouse(mevent) ⇒ Object
It pushes a KEY_MOUSE event onto the input queue, and associates with that event the given state data and screen-relative character-cell coordinates.
The Curses.ungetmouse function behaves analogously to Curses.ungetch.
1494 1495 1496 1497 1498 1499 1500 1501 1502 |
# File 'ext/curses/curses.c', line 1494
static VALUE
curses_ungetmouse(VALUE obj, VALUE mevent)
{
struct mousedata *mdata;
curses_stdscr();
GetMOUSE(mevent,mdata);
return (ungetmouse(mdata->mevent) == OK) ? Qtrue : Qfalse;
}
|
.use_default_colors ⇒ Object
tells the curses library to use terminal’s default colors.
see also the system manual for default_colors(3)
1127 1128 1129 1130 1131 1132 1133 |
# File 'ext/curses/curses.c', line 1127
static VALUE
curses_use_default_colors(VALUE obj)
{
curses_stdscr();
use_default_colors();
return Qnil;
}
|