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Diffstat (limited to 'usr.bin/window/wwframe.c')
-rw-r--r-- | usr.bin/window/wwframe.c | 249 |
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; + } + } +} |