mirror of
https://github.com/Aigor44/ncursesw-morphos.git
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11ca5f6299
+ add configure option --enable-weak-symbols to turn on new feature. + add configure-check for availability of weak symbols. + modify linkage with pthread library to use weak symbols so that applications not linked to that library will not use the mutexes, etc. This relies on gcc, and may be platform-specific (patch by Dr Werner Fink). + add note to INSTALL to document limitation of renaming of tic library using the --with-ticlib configure option (report by Dr Werner Fink). + document (in manpage) why tputs does not detect I/O errors (prompted by comments by Samuel Thibault). + fix remaining warnings from Klocwork report.
222 lines
7.1 KiB
C
222 lines
7.1 KiB
C
/****************************************************************************
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* Copyright (c) 1998-2005,2008 Free Software Foundation, Inc. *
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* *
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* Permission is hereby granted, free of charge, to any person obtaining a *
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* copy of this software and associated documentation files (the *
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* "Software"), to deal in the Software without restriction, including *
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* without limitation the rights to use, copy, modify, merge, publish, *
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* distribute, distribute with modifications, sublicense, and/or sell *
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* copies of the Software, and to permit persons to whom the Software is *
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* furnished to do so, subject to the following conditions: *
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* *
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* The above copyright notice and this permission notice shall be included *
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* in all copies or substantial portions of the Software. *
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* *
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS *
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF *
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. *
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* IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, *
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* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR *
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* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR *
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* THE USE OR OTHER DEALINGS IN THE SOFTWARE. *
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* *
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* Except as contained in this notice, the name(s) of the above copyright *
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* holders shall not be used in advertising or otherwise to promote the *
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* sale, use or other dealings in this Software without prior written *
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* authorization. *
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****************************************************************************/
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/****************************************************************************
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* Authors: *
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* Gerhard Fuernkranz 1993 (original) *
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* Zeyd M. Ben-Halim 1992,1995 (sic) *
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* Eric S. Raymond *
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* Juergen Pfeifer 1996-on *
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* Thomas E. Dickey *
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****************************************************************************/
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/*
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* lib_slk.c
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* Soft key routines.
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*/
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#include <curses.priv.h>
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#include <ctype.h>
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#include <term.h> /* num_labels, label_*, plab_norm */
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MODULE_ID("$Id: lib_slk.c,v 1.34 2008/08/16 19:20:04 tom Exp $")
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/*
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* We'd like to move these into the screen context structure, but cannot,
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* because slk_init() is called before initscr()/newterm().
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*/
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NCURSES_EXPORT_VAR(int)
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_nc_slk_format = 0; /* one more than format specified in slk_init() */
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/*
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* Paint the info line for the PC style SLK emulation.
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*/
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static void
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slk_paint_info(WINDOW *win)
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{
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SCREEN *sp = _nc_screen_of(win);
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if (win && sp && (sp->slk_format == 4)) {
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int i;
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mvwhline(win, 0, 0, 0, getmaxx(win));
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wmove(win, 0, 0);
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for (i = 0; i < sp->_slk->maxlab; i++) {
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mvwprintw(win, 0, sp->_slk->ent[i].ent_x, "F%d", i + 1);
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}
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}
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}
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/*
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* Free any memory related to soft labels, return an error.
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*/
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static int
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slk_failed(void)
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{
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if (SP->_slk) {
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FreeIfNeeded(SP->_slk->ent);
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free(SP->_slk);
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SP->_slk = (SLK *) 0;
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}
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return ERR;
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}
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/*
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* Initialize soft labels.
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* Called from newterm()
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*/
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NCURSES_EXPORT(int)
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_nc_slk_initialize(WINDOW *stwin, int cols)
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{
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int i, x;
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int res = OK;
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unsigned max_length;
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T((T_CALLED("_nc_slk_initialize()")));
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if (SP->_slk) { /* we did this already, so simply return */
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returnCode(OK);
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} else if ((SP->_slk = typeCalloc(SLK, 1)) == 0)
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returnCode(ERR);
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SP->_slk->ent = NULL;
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/*
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* If we use colors, vidputs() will suppress video attributes that conflict
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* with colors. In that case, we're still guaranteed that "reverse" would
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* work.
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*/
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if ((no_color_video & 1) == 0)
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SetAttr(SP->_slk->attr, A_STANDOUT);
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else
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SetAttr(SP->_slk->attr, A_REVERSE);
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SP->_slk->maxlab = ((num_labels > 0)
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? num_labels
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: MAX_SKEY(_nc_globals.slk_format));
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SP->_slk->maxlen = ((num_labels > 0)
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? label_width * label_height
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: MAX_SKEY_LEN(_nc_globals.slk_format));
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SP->_slk->labcnt = ((SP->_slk->maxlab < MAX_SKEY(_nc_globals.slk_format))
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? MAX_SKEY(_nc_globals.slk_format)
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: SP->_slk->maxlab);
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if (SP->_slk->maxlen <= 0
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|| SP->_slk->labcnt <= 0
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|| (SP->_slk->ent = typeCalloc(slk_ent,
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(unsigned) SP->_slk->labcnt)) == NULL)
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returnCode(slk_failed());
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max_length = SP->_slk->maxlen;
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for (i = 0; i < SP->_slk->labcnt; i++) {
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size_t used = max_length + 1;
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if ((SP->_slk->ent[i].ent_text = (char *) _nc_doalloc(0, used)) == 0)
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returnCode(slk_failed());
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memset(SP->_slk->ent[i].ent_text, 0, used);
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if ((SP->_slk->ent[i].form_text = (char *) _nc_doalloc(0, used)) == 0)
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returnCode(slk_failed());
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memset(SP->_slk->ent[i].form_text, 0, used);
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memset(SP->_slk->ent[i].form_text, ' ', max_length);
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SP->_slk->ent[i].visible = (char) (i < SP->_slk->maxlab);
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}
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if (_nc_globals.slk_format >= 3) { /* PC style */
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int gap = (cols - 3 * (3 + 4 * max_length)) / 2;
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if (gap < 1)
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gap = 1;
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for (i = x = 0; i < SP->_slk->maxlab; i++) {
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SP->_slk->ent[i].ent_x = x;
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x += max_length;
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x += (i == 3 || i == 7) ? gap : 1;
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}
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slk_paint_info(stwin);
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} else {
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if (_nc_globals.slk_format == 2) { /* 4-4 */
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int gap = cols - (SP->_slk->maxlab * max_length) - 6;
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if (gap < 1)
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gap = 1;
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for (i = x = 0; i < SP->_slk->maxlab; i++) {
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SP->_slk->ent[i].ent_x = x;
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x += max_length;
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x += (i == 3) ? gap : 1;
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}
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} else {
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if (_nc_globals.slk_format == 1) { /* 1 -> 3-2-3 */
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int gap = (cols - (SP->_slk->maxlab * max_length) - 5)
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/ 2;
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if (gap < 1)
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gap = 1;
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for (i = x = 0; i < SP->_slk->maxlab; i++) {
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SP->_slk->ent[i].ent_x = x;
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x += max_length;
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x += (i == 2 || i == 4) ? gap : 1;
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}
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} else
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returnCode(slk_failed());
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}
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}
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SP->_slk->dirty = TRUE;
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if ((SP->_slk->win = stwin) == NULL) {
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returnCode(slk_failed());
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}
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/* We now reset the format so that the next newterm has again
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* per default no SLK keys and may call slk_init again to
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* define a new layout. (juergen 03-Mar-1999)
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*/
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SP->slk_format = _nc_globals.slk_format;
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_nc_globals.slk_format = 0;
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returnCode(res);
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}
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/*
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* Restore the soft labels on the screen.
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*/
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NCURSES_EXPORT(int)
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slk_restore(void)
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{
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T((T_CALLED("slk_restore()")));
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if (SP->_slk == NULL)
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return (ERR);
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SP->_slk->hidden = FALSE;
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SP->_slk->dirty = TRUE;
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/* we have to repaint info line eventually */
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slk_paint_info(SP->_slk->win);
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returnCode(slk_refresh());
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}
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