Better window size management.

src/cmd/acme/cols.c

@@ -53,7 +53,7 @@ coladd(Column *c, Window *w, Window *clone, int y)
 {
 	Rectangle r, r1;
 	Window *v;
-	int i, t;
+	int i, j, minht, t;
 
 	v = nil;
 	r = c->r;
@@ -74,15 +74,27 @@ coladd(Column *c, Window *w, Window *clone, int y)
 		/*
 		 * if v's too small, grow it first.
 		 */
-		if(!c->safe || v->body.fr.maxlines<=3){
+		minht = v->tag.fr.font->height+Border+1;
+		j = 0;
+		while(!c->safe || v->body.fr.maxlines<=3 || Dy(v->body.all) <= minht){
+			if(++j > 10){
+fprint(2, "oops: dy=%d\n", Dy(v->body.all));
+				break;
+			}
+			if(j > 1)
+fprint(2, "regrow\n");
 			colgrow(c, v, 1);
-			y = v->body.fr.r.min.y+Dy(v->body.fr.r)/2;
 		}
-		r = v->r;
 		if(i == c->nw)
 			t = c->r.max.y;
 		else
 			t = c->w[i]->r.min.y-Border;
+		y = v->body.all.min.y+Dy(v->body.all)/2;
+		if(t - y < minht)
+			y = t - minht;
+		if(y < v->body.all.min.y)
+			y = v->body.all.min.y;
+		r = v->r;
 		r.max.y = t;
 		draw(screen, r, textcols[BACK], nil, ZP);
 		r1 = r;
@@ -209,6 +221,8 @@ colresize(Column *c, Rectangle r)
 			r1.max.y = r.max.y;
 		else
 			r1.max.y = r1.min.y+(Dy(w->r)+Border)*Dy(r)/Dy(c->r);
+		if(Dy(r1) < Border+font->height)
+			r1.max.y = r1.min.y + Border+font->height;
 		r2 = r1;
 		r2.max.y = r2.min.y+Border;
 		draw(screen, r2, display->black, nil, ZP);

src/cmd/acme/fns.h

@@ -9,7 +9,7 @@ void	warningew(Window*, Mntdir*, char*, ...);
 #define	fbufalloc()	emalloc(BUFSIZE)
 #define	fbuffree(x)	free(x)
 
-void	plumblook(Plumbmsg*m);
+void	plumblook(Plumbmsg *m);
 void	plumbshow(Plumbmsg*m);
 void	acmeputsnarf(void);
 void	acmegetsnarf(void);

src/cmd/acme/look.c

@@ -16,7 +16,7 @@
 CFid *plumbsendfid;
 CFid *plumbeditfid;
 
-Window*	openfile(Text*, Expand*);
+Window*	openfile(Text*, Expand*, int);
 
 int	nuntitled;
 
@@ -167,7 +167,7 @@ look3(Text *t, uint q0, uint q1, int external)
 	if(expanded == FALSE)
 		return;
 	if(e.name || e.u.at)
-		openfile(t, &e);
+		openfile(t, &e, FALSE);
 	else{
 		if(t->w == nil)
 			return;
@@ -207,6 +207,7 @@ plumblook(Plumbmsg *m)
 {
 	Expand e;
 	char *addr;
+	int newwindow;
 
 	if(m->ndata >= BUFSIZE){
 		warning(nil, "insanely long file name (%d bytes) in plumb message (%.32s...)\n", m->ndata, m->data);
@@ -227,7 +228,8 @@ plumblook(Plumbmsg *m)
 		e.u.ar = bytetorune(addr, &e.a1);
 		e.agetc = plumbgetc;
 	}
-	openfile(nil, &e);
+	newwindow = plumblookup(m->attr, "newwindow") != nil;
+	openfile(nil, &e, newwindow);
 	free(e.name);
 	free(e.u.at);
 	drawtopwindow();
@@ -688,7 +690,7 @@ lookid(int id, int dump)
 
 
 Window*
-openfile(Text *t, Expand *e)
+openfile(Text *t, Expand *e, int newwindow)
 {
 	Range r;
 	Window *w, *ow;
@@ -705,6 +707,8 @@ openfile(Text *t, Expand *e)
 	}else
 		w = lookfile(e->name, e->nname);
 	if(w){
+		if(newwindow==TRUE && !w->isdir)
+			w = coladd(w->col, nil, w, -1);
 		t = &w->body;
 		if(!t->col->safe && t->fr.maxlines==0) /* window is obscured by full-column window */
 			colgrow(t->col, t->col->w[0], 1);
@@ -785,7 +789,7 @@ new(Text *et, Text *t, Text *argt, int flag1, int flag2, Rune *arg, int narg)
 		e.nname = nf;
 		e.bname = runetobyte(f, nf);
 		e.jump = TRUE;
-		openfile(et, &e);
+		openfile(et, &e, FALSE);
 		free(f);
 		free(e.bname);
 		arg = skipbl(a, na, &narg);

src/cmd/acme/wind.c

@@ -121,6 +121,7 @@ winresize(Window *w, Rectangle r, int safe, int keepextra)
 	Image *b;
 	Rectangle br, r1;
 
+if(0) fprint(2, "winresize %d %R safe=%d keep=%d h=%d\n", w->id, r, safe, keepextra, font->height);
 	w->tagtop = r;
 	w->tagtop.max.y = r.min.y+font->height;
 
@@ -128,7 +129,9 @@ winresize(Window *w, Rectangle r, int safe, int keepextra)
 	r1.max.y = min(r.max.y, r1.min.y + w->taglines*font->height);
 	y = r1.max.y;
 	if(1 || !safe || !eqrect(w->tag.all, r1)){
+if(0) fprint(2, "resize tag %R => %R", w->tag.all, r1);
 		textresize(&w->tag, r1, TRUE);
+if(0) fprint(2, "=> %R (%R)\n", w->tag.all, w->tag.fr.r);
 		y = w->tag.fr.r.max.y;
 		b = button;
 		if(w->body.file->mod && !w->isdir && !w->isscratch)
@@ -141,7 +144,7 @@ winresize(Window *w, Rectangle r, int safe, int keepextra)
 	
 	r1 = r;
 	r1.min.y = y;
-	if(!safe || !eqrect(w->body.all, r1)){
+	if(1 || !safe || !eqrect(w->body.all, r1)){
 		if(y+1+w->body.fr.font->height <= r.max.y){	/* room for one line */
 			r1.min.y = y;
 			r1.max.y = y+1;
@@ -153,8 +156,10 @@ winresize(Window *w, Rectangle r, int safe, int keepextra)
 			r1.min.y = y;
 			r1.max.y = y;
 		}
+if(0) fprint(2, "resize body %R => %R", w->body.all, r1);
 		w->r = r;
 		w->r.max.y = textresize(&w->body, r1, keepextra);
+if(0) fprint(2, " => %R (%R; %R)\n", w->body.all, w->body.fr.r, w->r);
 		textscrdraw(&w->body);
 	}
 	w->maxlines = min(w->body.fr.nlines, max(w->maxlines, w->body.fr.maxlines));