X-Git-Url: https://ncurses.scripts.mit.edu/?a=blobdiff_plain;f=man%2Fcurs_slk.3x;h=0816785e004dc7168ef50927805006857b82f563;hb=9e084820c3f396f861b2cb74fbd5fc15aa10b6bc;hp=54d0ec0bd4680d040e33e7fe6408dce2d078f0a7;hpb=71c0306f0824ef2b10c4c5813fb003db48f3012e;p=ncurses.git diff --git a/man/curs_slk.3x b/man/curs_slk.3x index 54d0ec0b..0816785e 100644 --- a/man/curs_slk.3x +++ b/man/curs_slk.3x @@ -1,5 +1,6 @@ .\"*************************************************************************** -.\" Copyright (c) 1998-2007,2010 Free Software Foundation, Inc. * +.\" Copyright 2018-2021,2022 Thomas E. Dickey * +.\" Copyright 1998-2016,2017 Free Software Foundation, Inc. * .\" * .\" Permission is hereby granted, free of charge, to any person obtaining a * .\" copy of this software and associated documentation files (the * @@ -26,89 +27,105 @@ .\" authorization. * .\"*************************************************************************** .\" -.\" $Id: curs_slk.3x,v 1.18 2010/07/31 14:43:29 tom Exp $ +.\" $Id: curs_slk.3x,v 1.44 2022/10/29 22:44:14 tom Exp $ .TH curs_slk 3X "" +.ie \n(.g .ds `` \(lq +.el .ds `` `` +.ie \n(.g .ds '' \(rq +.el .ds '' '' +.de bP +.ie n .IP \(bu 4 +.el .IP \(bu 2 +.. .na .hy 0 .SH NAME -\fBslk_init\fR, -\fBslk_set\fR, -\fBslk_refresh\fR, -\fBslk_noutrefresh\fR, -\fBslk_label\fR, -\fBslk_clear\fR, -\fBslk_restore\fR, -\fBslk_touch\fR, -\fBslk_attron\fR, -\fBslk_attrset\fR, -\fBslk_attroff\fR, -\fBslk_attr_on\fR, -\fBslk_attr_set\fR, -\fBslk_attr_off\fR, -\fBslk_attr\fR, -\fBslk_color\fR \- \fBcurses\fR soft label routines +\fBslk_init\fP, +\fBslk_set\fP, +\fBslk_wset\fP, +\fBslk_refresh\fP, +\fBslk_noutrefresh\fP, +\fBslk_label\fP, +\fBslk_clear\fP, +\fBslk_restore\fP, +\fBslk_touch\fP, +\fBslk_attron\fP, +\fBslk_attrset\fP, +\fBslk_attroff\fP, +\fBslk_attr_on\fP, +\fBslk_attr_set\fP, +\fBslk_attr_off\fP, +\fBslk_attr\fP, +\fBslk_color\fP, +\fBextended_slk_color\fP \- \fBcurses\fP soft label routines .ad .hy .SH SYNOPSIS -\fB#include \fR +\fB#include \fP .sp -\fBint slk_init(int fmt);\fR -.br -\fBint slk_set(int labnum, const char *label, int fmt);\fR -.br -\fBint slk_refresh(void);\fR -.br -\fBint slk_noutrefresh(void);\fR +\fBint slk_init(int \fIfmt\fB);\fR +.sp +\fBint slk_set(int \fIlabnum\fB, const char *\fIlabel\fB, int \fIfmt\fB);\fR .br -\fBchar *slk_label(int labnum);\fR +\fBint slk_wset(int \fIlabnum\fB, const wchar_t *\fIlabel\fB, int \fIfmt\fB);\fR +.sp +\fBchar *slk_label(int \fIlabnum\fB);\fR +.sp +\fBint slk_refresh(void);\fP .br -\fBint slk_clear(void);\fR +\fBint slk_noutrefresh(void);\fP .br -\fBint slk_restore(void);\fR +\fBint slk_clear(void);\fP .br -\fBint slk_touch(void);\fR +\fBint slk_restore(void);\fP .br -\fBint slk_attron(const chtype attrs);\fR +\fBint slk_touch(void);\fP +.sp +\fBint slk_attron(const chtype \fIattrs\fB);\fR .br -\fBint slk_attroff(const chtype attrs);\fR +\fBint slk_attroff(const chtype \fIattrs\fB);\fR .br -\fBint slk_attrset(const chtype attrs);\fR +\fBint slk_attrset(const chtype \fIattrs\fB);\fR .br -\fBint slk_attr_on(attr_t attrs, void* opts);\fR +\fBint slk_attr_on(attr_t \fIattrs\fB, void* \fIopts\fB);\fR .br -\fBint slk_attr_off(const attr_t attrs, void * opts);\fR +\fBint slk_attr_off(const attr_t \fIattrs\fB, void * \fIopts\fB);\fR .br -\fBint slk_attr_set(const attr_t attrs,\fR +\fBint slk_attr_set(const attr_t \fIattrs\fB, short \fIpair\fB, void* \fIopts\fB);\fR .br - \fBshort color_pair_number, void* opts);\fR +/* extension */ .br -\fBattr_t slk_attr(void);\fR +\fBattr_t slk_attr(void);\fP +.sp +\fBint slk_color(short \fIpair\fB);\fR .br -\fBint slk_color(short color_pair_number);\fR +/* extension */ .br +\fBint extended_slk_color(int \fIpair\fB);\fR .SH DESCRIPTION The slk* functions manipulate the set of soft function-key labels that exist on many terminals. For those terminals that do not have soft labels, -\fBcurses\fR takes over the bottom line of \fBstdscr\fR, reducing the size of -\fBstdscr\fR and the variable \fBLINES\fR. -\fBcurses\fR standardizes on eight +\fBcurses\fP takes over the bottom line of \fBstdscr\fP, reducing the size of +\fBstdscr\fP and the variable \fBLINES\fP. +\fBcurses\fP standardizes on eight labels of up to eight characters each. In addition to this, the ncurses implementation supports a mode where it simulates 12 labels of up to five characters each. -This is useful for today's PC-like enduser devices. +This is useful for PC-like enduser devices. ncurses simulates this mode by taking over up to two lines at the bottom of the screen; it does not try to use any hardware support for this mode. +.SS Initialization .PP -The \fBslk_init\fR routine must be called before \fBinitscr\fR or \fBnewterm\fR +The \fBslk_init\fP routine must be called before \fBinitscr\fP or \fBnewterm\fP is called. -If \fBinitscr\fR eventually uses a line from \fBstdscr\fR to +If \fBinitscr\fP eventually uses a line from \fBstdscr\fP to emulate the soft labels, -then \fIfmt\fR determines how the labels are arranged on the screen: -.RS +then \fIfmt\fP determines how the labels are arranged on the screen: +.RS 3 .TP 3 .B 0 indicates a 3\-2\-3 arrangement of @@ -125,62 +142,75 @@ is again the PC-like 4\-4\-4 mode, but in addition an index line is generated, helping the user to identify the key numbers easily. .RE +.SS Labels .PP -The \fBslk_set\fR routine has three parameters: -.RS +The \fBslk_set\fP routine +(and the \fBslk_wset\fP routine for the wide-character library) +has three parameters: +.RS 3 .TP 5 .I labnum -is the label number, from \fB1\fR to \fB8\fR -(12 for \fIfmt\fP in \fBslk_init\fP is \fB2\fP or \fB3\fP); +is the label number, from \fB1\fP to \fB8\fP +(12 if \fIfmt\fP in \fBslk_init\fP is \fB2\fP or \fB3\fP); .TP .I label is be the string to put on the label, up to eight -(five for \fIfmt\fP in \fBslk_init\fP is \fB2\fP or \fB3\fP) +(five if \fIfmt\fP in \fBslk_init\fP is \fB2\fP or \fB3\fP) characters in length. A null string or a null pointer sets up a blank label. .TP .I fmt is either -\fB0\fR, \fB1\fR, or \fB2\fR, indicating whether the label is to be +\fB0\fP, \fB1\fP, or \fB2\fP, indicating whether the label is to be left-justified, centered, or right-justified, respectively, within the label. .RE .PP -The \fBslk_refresh\fR and \fBslk_noutrefresh\fR routines correspond to -the \fBwrefresh\fR and \fBwnoutrefresh\fR routines. +The \fBslk_label\fP routine returns the current label for label number +\fIlabnum\fP, with leading and trailing blanks stripped. +.SS Screen updates .PP -The \fBslk_label\fR routine returns the current label for label number -\fIlabnum\fR, with leading and trailing blanks stripped. +The \fBslk_refresh\fP and \fBslk_noutrefresh\fP routines correspond to +the \fBwrefresh\fP and \fBwnoutrefresh\fP routines. .PP -The \fBslk_clear\fR routine clears the soft labels from the screen. +The \fBslk_clear\fP routine clears the soft labels from the screen. .PP -The \fBslk_restore\fR routine restores the soft labels to the screen -after a \fBslk_clear\fR has been performed. +The \fBslk_restore\fP routine restores the soft labels to the screen +after a \fBslk_clear\fP has been performed. .PP -The \fBslk_touch\fR routine forces all the soft labels to be output -the next time a \fBslk_noutrefresh\fR is performed. +The \fBslk_touch\fP routine forces all the soft labels to be output +the next time a \fBslk_noutrefresh\fP is performed. +.SS Video attributes .PP -The \fBslk_attron\fR, \fBslk_attrset\fR, \fBslk_attroff\fR and \fBslk_attr\fR -routines correspond to \fBattron\fR, \fBattrset\fR, \fBattroff\fR and \fBattr_get\fR. +The +\fBslk_attron\fP, \fBslk_attrset\fP, \fBslk_attroff\fP and \fBslk_attr\fP +routines correspond to +\fBattron\fP, \fBattrset\fP, \fBattroff\fP and \fBattr_get\fP, respectively. They have an effect only if soft labels are simulated on the bottom line of the screen. The default highlight for soft keys is A_STANDOUT (as in System V curses, which does not document this fact). +.SS Colors .PP -The \fBslk_color\fR routine corresponds to \fBcolor_set\fR. +The \fBslk_color\fP routine corresponds to \fBcolor_set\fP. It has an effect only if soft labels are simulated on the bottom line of the screen. +.PP +Because \fBslk_color\fP accepts only \fBshort\fP (signed 16-bit integer) values, +this implementation provides +\fBextended_slk_color\fP which accepts an integer value, e.g., 32-bits. . .SH RETURN VALUE -These routines return \fBERR\fR upon failure and OK (SVr4 specifies only "an -integer value other than \fBERR\fR") upon successful completion. +These routines return \fBERR\fP upon failure +and \fBOK\fP (SVr4 specifies only "an integer value other than \fBERR\fP") +upon successful completion. .PP X/Open defines no error conditions. In this implementation -.RS +.RS 3 .TP 5 -\fBslk_attr\fR +\fBslk_attr\fP returns the attribute used for the soft keys. .TP 5 .na @@ -198,20 +228,19 @@ if the terminal or the softkeys were not initialized. \fBslk_attr_set\fP returns an error if the terminal or the softkeys were not initialized, or -the color pair is outside the range 0..COLOR_PAIRS\-1, -or opts is not null. +the color pair is outside the range 0..COLOR_PAIRS\-1. .TP 5 \fBslk_color\fP returns an error if the terminal or the softkeys were not initialized, or the color pair is outside the range 0..COLOR_PAIRS\-1. .TP 5 -\fBslk_init\fR +\fBslk_init\fP returns an error if the format parameter is outside the range 0..3. .TP 5 -\fBslk_label\fR -returns \fBNULL\fR on error. +\fBslk_label\fP +returns \fBNULL\fP on error. .TP 5 \fBslk_set\fP returns an error @@ -220,22 +249,110 @@ the \fIlabnum\fP parameter is outside the range of label counts, or if the format parameter is outside the range 0..2, or if memory for the labels cannot be allocated. .RE +.SH HISTORY +SVr3 introduced these functions: + slk_clear + slk_init + slk_label + slk_noutrefresh + slk_refresh + slk_restore + slk_set + slk_touch +.PP +SVr4 added these functions: + slk_attroff + slk_attron + slk_attrset + slk_start +.PP +X/Open Curses added these: + slk_attr_off + slk_attr_on + slk_attr_set + slk_color + slk_wset +.SH EXTENSIONS +.PP +X/Open Curses documents the \fIopts\fP argument as reserved for future use, +saying that it must be null. +This implementation +uses that parameter in ABI 6 for the functions which have a color-pair +parameter to support extended color pairs. +.PP +For functions which modify the color, e.g., \fBslk_attr_set\fP, +if \fIopts\fP is set it is treated as a pointer to \fBint\fP, +and used to set the color pair instead of the \fBshort\fP pair parameter. .SH NOTES -Most applications would use \fBslk_noutrefresh\fR because a -\fBwrefresh\fR is likely to follow soon. +Most applications would use \fBslk_noutrefresh\fP because a +\fBwrefresh\fP is likely to follow soon. .SH PORTABILITY -The XSI Curses standard, Issue 4, describes these functions. -It changes the -argument type of the attribute-manipulation functions \fBslk_attron\fR, -\fBslk_attroff\fR, \fBslk_attrset\fR to be \fBattr_t\fR, and adds \fBconst\fR -qualifiers. -The format codes \fB2\fR and \fB3\fR for \fBslk_init()\fR and the -function \fBslk_attr\fR are specific to ncurses. +The XSI Curses standard, Issue 4, described the soft-key functions, +with some differences from SVr4 curses: +.bP +It added functions like the SVr4 +attribute-manipulation functions \fBslk_attron\fP, +\fBslk_attroff\fP, \fBslk_attrset\fP, +but which use \fBattr_t\fP parameters (rather than \fBchtype\fP), +along with a reserved \fIopts\fP parameter. +.IP +Two of these new functions (unlike the SVr4 functions) have no provision +for color: \fBslk_attr_on\fP and \fBslk_attr_off\fP. +.IP +The third function (\fBslk_attr_set\fP) has a color-pair parameter. +.bP +It added \fBconst\fP qualifiers to parameters (unnecessarily), and +.bP +It added \fBslk_color\fP. +.PP +Although \fBslk_start\fP is declared in the curses header file, +it was not documented by SVr4 other than its presence in a list +of libtermlib.so.1 symbols. +Reading the source code (i.e., Illumos): +.bP +\fBslk_start\fP has two parameters: +.RS +.bP +\fIng\fP (number of groups) and +.bP +\fIgp\fP (group pointer). +.RE +.bP +Soft-key groups are an array of \fIng\fP integers. +.bP +In SVr4, \fBslk_init\fP calls \fBslk_start\fP passing a null for \fIgp\fP. +For this case, \fBslk_start\fP uses the number of groups \fIng\fP +(3 for the 3-2-3 layout, 2 for the 4-4 layout) which \fBslk_init\fP provided. +.IP +If \fIng\fP is neither 2 or 3, +\fBslk_start\fP checks the terminfo \fIfln\fP (label_format) capability, +interpreting that as a comma-separated list of numbers, +e.g., \*(``3,2,3\*('' for the 3-2-3 layout. +.IP +Finally, if there is no \fIfln\fP capability, \fBslk_start\fP returns ERR. +.bP +If \fBslk_start\fP is given a non-null \fIgp\fP, +it copies the \fIng\fP elements of the group of soft-keys, up to 16. +.IP +If there are more than 16 elements, \fBslk_start\fP returns an error. +.bP +The format codes \fB2\fP and \fB3\fP for \fBslk_init\fP +were added by ncurses in 1996. +PDCurses 2.4 added this feature in 2001. +.PP +The function \fBslk_attr\fP was added by ncurses in 1996. +.PP +X/Open Curses does not specify a limit for the number of colors and +color pairs which a terminal can support. +However, in its use of \fBshort\fP for the parameters, +it carries over SVr4's implementation detail for the compiled +terminfo database, which uses signed 16-bit numbers. +This implementation provides extended versions of those functions +which use \fBint\fP parameters, +allowing applications to use larger color- and pair-numbers. .SH SEE ALSO -\fBcurses\fR(3X), \fBcurs_attr\fR(3X), \fBcurs_initscr\fR(3X), \fBcurs_refresh\fR(3X) -.\"# -.\"# The following sets edit modes for GNU EMACS -.\"# Local Variables: -.\"# mode:nroff -.\"# fill-column:79 -.\"# End: +\fBcurses\fP(3X), +\fBcurs_attr\fP(3X), +\fBcurs_initscr\fP(3X), +\fBcurs_refresh\fP(3X), +\fBcurs_variables\fP(3X).