Moved from ports with several enhancements

1 files changed, 272 insertions, 0 deletions

diff --git a/lib/libncurses/lib_slk.c b/lib/libncurses/lib_slk.c
new file mode 100644
index 0000000..f220a37
--- /dev/null
+++ b/lib/libncurses/lib_slk.c
@@ -0,0 +1,272 @@
+
+/*
+ *	lib_slk.c
+ *	Soft key routines.
+ *
+ *	Copyright (C) Gerhard Fuernkranz 1993
+ *	Permisson is granted to redistribute this
+ *	code under the terms of the GNU Copyleft.
+ */
+
+#include <nterm.h>
+#include "curses.priv.h"
+#include <string.h>
+#include <stdlib.h>
+
+int _slk_format;		/* format specified in slk_init() */
+
+#define MAXCOLUMNS    135
+#define MAXLINES      66
+#define UNINITIALISED ((struct try * ) -1)
+/*
+ * Retrieve label text.
+ */
+
+char *
+slk_label(int n)
+{
+SLK *slk = SP->_slk;
+#ifdef TRACE
+	if (_tracing)
+	_tracef("slk_label(%d)", n);
+#endif
+
+	if (slk == NULL || n < 1 || n > 8)
+		return NULL;
+	return slk->ent[n-1].text;
+}
+
+/*
+ * Write the soft lables to the slk window.
+ */
+
+static void
+slk_intern_refresh(SLK *slk)
+{
+int i;
+#ifdef TRACE
+	if (_tracing)
+	_tracef("slk_intern_refresh(%x)", slk);
+#endif
+
+	for (i = 0; i < 8; i++) {
+		if (slk->dirty || slk->ent[i].dirty) {
+			if (slk->ent[i].visible) {
+				wmove(slk->win,0,slk->ent[i].x);
+				wattrset(slk->win,A_REVERSE);
+				waddstr(slk->win,slk->ent[i].form_text);
+				wattrset(slk->win,A_NORMAL);
+			}
+			slk->ent[i].dirty = FALSE;
+		}
+	}
+	slk->dirty = FALSE;
+}
+
+/*
+ * Refresh the soft label window.
+ */
+
+int
+slk_noutrefresh(void)
+{
+SLK *slk = SP->_slk;
+#ifdef TRACE
+	if (_tracing)
+	_tracef("slk_noutrefresh()");
+#endif
+	
+	if (slk == NULL)
+		return ERR;
+	if (slk->hidden)
+		return OK;
+	slk_intern_refresh(slk);
+	return wnoutrefresh(slk->win);
+}
+
+/*
+ * Refresh the soft label window.
+ */
+
+int
+slk_refresh(void)
+{
+SLK *slk = SP->_slk;
+#ifdef TRACE
+	if (_tracing)
+	_tracef("slk_refresh()");
+#endif
+	
+	if (slk == NULL)
+		return ERR;
+	if (slk->hidden)
+		return OK;
+	slk_intern_refresh(slk);
+	return wrefresh(slk->win);
+}
+
+/*
+ * Restore the soft labels on the screen.
+ */
+
+int
+slk_restore(void)
+{
+SLK *slk = SP->_slk;
+#ifdef TRACE
+	if (_tracing)
+	_tracef("slk_restore()");
+#endif
+	
+	if (slk == NULL)
+		return ERR;
+	slk->hidden = FALSE;
+	slk->dirty = TRUE;
+	return slk_refresh();
+}
+
+/*
+ * Set soft label text.
+ */
+
+int
+slk_set(int i, char *str, int format)
+{
+SLK *slk = SP->_slk;
+int len;
+#ifdef TRACE
+	if (_tracing)
+	_tracef("slk_set(%d, %s, %d)", i, str, format);
+#endif
+
+	if (slk == NULL || i < 1 || i > 8 || format < 0 || format > 2)
+		return ERR;
+	if (str == NULL)
+		str = "";
+	i--;
+	strncpy(slk->ent[i].text,str,8);
+	memset(slk->ent[i].form_text,' ',8);
+	slk->ent[i].text[8] = 0;
+	slk->ent[i].form_text[8] = 0;
+	len = strlen(slk->ent[i].text);
+	switch(format) {
+	case 0: /* left */
+		memcpy(slk->ent[i].form_text,slk->ent[i].text,len);
+		break;
+	case 1: /* center */
+		memcpy(slk->ent[i].form_text+(8-len)/2,slk->ent[i].text,len);
+		break;
+	case 2: /* right */
+		memcpy(slk->ent[i].form_text+8-len,slk->ent[i].text,len);
+		break;
+	}
+	slk->ent[i].dirty = TRUE;
+	return OK;
+}
+
+/*
+ * Pretend, that soft keys have been changed.
+ */
+
+int
+slk_touch(void)
+{
+SLK *slk = SP->_slk;
+#ifdef TRACE
+	if (_tracing)
+	_tracef("slk_touch()");
+#endif
+	
+	if (slk == NULL)
+		return ERR;
+	slk->dirty = TRUE;
+	return OK;
+}
+
+/*
+ * Remove soft labels from the screen.
+ */
+
+int
+slk_clear(void)
+{
+SLK *slk = SP->_slk;
+#ifdef TRACE
+	if (_tracing)
+	_tracef("slk_clear()");
+#endif
+	
+	if (slk == NULL)
+		return ERR;
+	slk->hidden = TRUE;
+	werase(slk->win);
+	return wrefresh(slk->win);
+}
+
+/*
+ * Initialize soft labels.
+ * Called from newterm()
+ */
+
+static int
+slk_initialize(WINDOW *stwin, int cols)
+{
+SLK *slk;
+int i, maxlab, x;
+#ifdef TRACE
+	if (_tracing)
+	_tracef("slk_initialize()");
+#endif
+
+	if ((SP->_slk = slk = (SLK*) calloc(1,sizeof(SLK))) == NULL)
+		return OK;
+	maxlab = (cols+1)/9;
+	for (i = 0; i < 8; i++) {
+		memset(slk->ent[i].form_text,' ',8);
+		slk->ent[i].visible = i < maxlab;
+	}
+	if (_slk_format == 1) {		/* 4-4 */
+		int gap = cols - 64 - 6;
+	if (gap < 1)
+		gap = 1;
+	for (i = x = 0; i < 8; i++) {
+		slk->ent[i].x = x;
+		x += 8;
+		x += (i == 3) ? gap : 1;
+	}
+	}
+	else {				/* 0 -> 3-2-3 */
+		int gap = (cols - 64 - 5) / 2;
+	if (gap < 1)
+		gap = 1;
+	for (i = x = 0; i < 8; i++) {
+		slk->ent[i].x = x;
+		x += 8;
+		x += (i == 2 || i == 4) ? gap : 1;
+	}
+	}
+	slk->dirty = TRUE;
+	if ((slk->win = stwin) == NULL)
+	{
+		free(slk);
+		return ERR;
+	}
+
+	return OK;
+}
+
+/*
+ * Initialize soft labels.
+ * Called by the user.
+ */
+
+int
+slk_init(int format)
+{
+	if (format < 0 || format > 1)
+		return ERR;
+	_slk_format = format;
+	ripoffline(-1, slk_initialize);
+	return OK;
+}
+