BSD 4.4 Lite Usr.bin Sources

1 files changed, 249 insertions, 0 deletions

diff --git a/usr.bin/window/wwframe.c b/usr.bin/window/wwframe.c
new file mode 100644
index 0000000..bb0badd
--- /dev/null
+++ b/usr.bin/window/wwframe.c
@@ -0,0 +1,249 @@
+/*
+ * Copyright (c) 1983, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Edward Wang at The University of California, Berkeley.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef lint
+static char sccsid[] = "@(#)wwframe.c	8.1 (Berkeley) 6/6/93";
+#endif /* not lint */
+
+#include "ww.h"
+#include "tt.h"
+
+#define frameok(w, r, c) (w1 = wwindex[wwsmap[r][c]], \
+	w1->ww_fmap || w1->ww_order > (w)->ww_order)
+
+wwframe(w, wframe)
+register struct ww *w;
+struct ww *wframe;
+{
+	register r, c;
+	char a1, a2, a3;
+	char b1, b2, b3;
+	register char *smap;
+	register code;
+	register struct ww *w1;
+
+	if (w->ww_w.t > 0) {
+		r = w->ww_w.t - 1;
+		c = w->ww_i.l - 1;
+		smap = &wwsmap[r + 1][c + 1];
+		a1 = 0;
+		a2 = 0;
+		b1 = 0;
+		b2 = c < 0 || frameok(w, r, c);
+
+		for (; c < w->ww_i.r; c++) {
+			if (c + 1 >= wwncol) {
+				a3 = 1;
+				b3 = 1;
+			} else {
+				a3 = w->ww_index == *smap++;
+				b3 = frameok(w, r, c + 1);
+			}
+			if (b2) {
+				code = 0;
+				if ((a1 || a2) && b1)
+					code |= WWF_L;
+				if ((a2 || a3) && b3)
+					code |= WWF_R;
+				if (code)
+					wwframec(wframe, r, c, code|WWF_TOP);
+			}
+			a1 = a2;
+			a2 = a3;
+			b1 = b2;
+			b2 = b3;
+		}
+		if ((a1 || a2) && b1 && b2)
+			wwframec(wframe, r, c, WWF_L|WWF_TOP);
+	}
+
+	if (w->ww_w.b < wwnrow) {
+		r = w->ww_w.b;
+		c = w->ww_i.l - 1;
+		smap = &wwsmap[r - 1][c + 1];
+		a1 = 0;
+		a2 = 0;
+		b1 = 0;
+		b2 = c < 0 || frameok(w, r, c);
+
+		for (; c < w->ww_i.r; c++) {
+			if (c + 1 >= wwncol) {
+				a3 = 1;
+				b3 = 1;
+			} else {
+				a3 = w->ww_index == *smap++;
+				b3 = frameok(w, r, c + 1);
+			}
+			if (b2) {
+				code = 0;
+				if ((a1 || a2) && b1)
+					code |= WWF_L;
+				if ((a2 || a3) && b3)
+					code |= WWF_R;
+				if (code)
+					wwframec(wframe, r, c, code);
+			}
+			a1 = a2;
+			a2 = a3;
+			b1 = b2;
+			b2 = b3;
+		}
+		if ((a1 || a2) && b1 && b2)
+			wwframec(wframe, r, c, WWF_L);
+	}
+
+	if (w->ww_w.l > 0) {
+		r = w->ww_i.t - 1;
+		c = w->ww_w.l - 1;
+		a1 = 0;
+		a2 = 0;
+		b1 = 0;
+		b2 = r < 0 || frameok(w, r, c);
+
+		for (; r < w->ww_i.b; r++) {
+			if (r + 1 >= wwnrow) {
+				a3 = 1;
+				b3 = 1;
+			} else {
+				a3 = w->ww_index == wwsmap[r + 1][c + 1];
+				b3 = frameok(w, r + 1, c);
+			}
+			if (b2) {
+				code = 0;
+				if ((a1 || a2) && b1)
+					code |= WWF_U;
+				if ((a2 || a3) && b3)
+					code |= WWF_D;
+				if (code)
+					wwframec(wframe, r, c, code);
+			}
+			a1 = a2;
+			a2 = a3;
+			b1 = b2;
+			b2 = b3;
+		}
+		if ((a1 || a2) && b1 && b2)
+			wwframec(wframe, r, c, WWF_U);
+	}
+
+	if (w->ww_w.r < wwncol) {
+		r = w->ww_i.t - 1;
+		c = w->ww_w.r;
+		a1 = 0;
+		a2 = 0;
+		b1 = 0;
+		b2 = r < 0 || frameok(w, r, c);
+
+		for (; r < w->ww_i.b; r++) {
+			if (r + 1 >= wwnrow) {
+				a3 = 1;
+				b3 = 1;
+			} else {
+				a3 = w->ww_index == wwsmap[r + 1][c - 1];
+				b3 = frameok(w, r + 1, c);
+			}
+			if (b2) {
+				code = 0;
+				if ((a1 || a2) && b1)
+					code |= WWF_U;
+				if ((a2 || a3) && b3)
+					code |= WWF_D;
+				if (code)
+					wwframec(wframe, r, c, code);
+			}
+			a1 = a2;
+			a2 = a3;
+			b1 = b2;
+			b2 = b3;
+		}
+		if ((a1 || a2) && b1 && b2)
+			wwframec(wframe, r, c, WWF_U);
+	}
+}
+
+wwframec(f, r, c, code)
+register struct ww *f;
+register r, c;
+char code;
+{
+	char oldcode;
+	register char *smap;
+
+	if (r < f->ww_i.t || r >= f->ww_i.b || c < f->ww_i.l || c >= f->ww_i.r)
+		return;
+
+	smap = &wwsmap[r][c];
+
+	{
+		register struct ww *w;
+
+		w = wwindex[*smap];
+		if (w->ww_order > f->ww_order) {
+			if (w != &wwnobody && w->ww_win[r][c] == 0)
+				w->ww_nvis[r]--;
+			*smap = f->ww_index;
+		}
+	}
+
+	if (f->ww_fmap != 0) {
+		register char *fmap;
+
+		fmap = &f->ww_fmap[r][c];
+		oldcode = *fmap;
+		*fmap |= code;
+		if (code & WWF_TOP)
+			*fmap &= ~WWF_LABEL;
+		code = *fmap;
+	} else
+		oldcode = 0;
+	{
+		register char *win = &f->ww_win[r][c];
+
+		if (*win == WWM_GLS && *smap == f->ww_index)
+			f->ww_nvis[r]++;
+		*win &= ~WWM_GLS;
+	}
+	if (oldcode != code && (code & WWF_LABEL) == 0) {
+		register short frame;
+
+		frame = tt.tt_frame[code & WWF_MASK];
+		f->ww_buf[r][c].c_w = frame;
+		if (wwsmap[r][c] == f->ww_index) {
+			wwtouched[r] |= WWU_TOUCHED;
+			wwns[r][c].c_w = frame;
+		}
+	}
+}