mothra: allow plmouse() to update mouse state, use a pipe to signal screen update

sys/src/cmd/mothra/getpix.c

@@ -35,7 +35,7 @@ void getimage(Rtext *t, Www *w){
 	for(p=w->pix;p!=nil; p=p->next)
 		if(strcmp(ap->image, p->name)==0 && ap->width==p->width && ap->height==p->height){
 			t->b = p->b;
-			w->changed=1;
+			update(w);
 			return;
 		}
 	fd=urlopen(&url, GET, 0);
@@ -44,7 +44,7 @@ void getimage(Rtext *t, Www *w){
 		snprint(err, sizeof(err), "[%s: %r]", url.fullname);
 		free(t->text);
 		t->text=strdup(err);
-		w->changed=1;
+		update(w);
 		close(fd);
 		return;
 	}
@@ -82,7 +82,7 @@ void getimage(Rtext *t, Www *w){
 	p->next=w->pix;
 	w->pix=p;
 	t->b=b;
-	w->changed=1;
+	update(w);
 }
 
 void getpix(Rtext *t, Www *w){

sys/src/cmd/mothra/libpanel/event.c

@@ -26,21 +26,21 @@ Panel *pl_ptinpanel(Point p, Panel *g){
 	}
 	return 0;
 }
-void plmouse(Panel *g, Mouse mouse){
+void plmouse(Panel *g, Mouse *m){
 	Panel *hit, *last;
 	if(g->flags&REMOUSE)
 		hit=g->lastmouse;
 	else{
-		hit=pl_ptinpanel(mouse.xy, g);
+		hit=pl_ptinpanel(m->xy, g);
 		last=g->lastmouse;
 		if(last && last!=hit){
-			mouse.buttons|=OUT;
-			last->hit(last, &mouse);
-			mouse.buttons&=~OUT;
+			m->buttons|=OUT;
+			last->hit(last, m);
+			m->buttons&=~OUT;
 		}
 	}
 	if(hit){
-		if(hit->hit(hit, &mouse))
+		if(hit->hit(hit, m))
 			g->flags|=REMOUSE;
 		else
 			g->flags&=~REMOUSE;

sys/src/cmd/mothra/libpanel/panel.h

@@ -104,7 +104,7 @@ void pldraw(Panel *, Image *);		/* display the panel on the bitmap */
 void plfree(Panel *);			/* give back space */
 void plgrabkb(Panel *);			/* this Panel should receive keyboard events */
 void plkeyboard(Rune);			/* send a keyboard event to the appropriate Panel */
-void plmouse(Panel *, Mouse);		/* send a Mouse event to a Panel tree */
+void plmouse(Panel *, Mouse *);		/* send a Mouse event to a Panel tree */
 void plscroll(Panel *, Panel *, Panel *); /* link up scroll bars */
 char *plentryval(Panel *);		/* entry delivers its value */
 void plsetbutton(Panel *, int);		/* set or clear the mark on a button */

sys/src/cmd/mothra/libpanel/popup.c

@@ -74,7 +74,7 @@ int pl_hitpopup(Panel *g, Mouse *m){
 			g->state=UP;
 		}
 	}
-	plmouse(p, *m);
+	plmouse(p, m);
 	return (m->buttons&7)!=0;
 }
 void pl_typepopup(Panel *g, Rune c){

sys/src/cmd/mothra/libpanel/pulldown.c

@@ -96,7 +96,7 @@ int pl_hitpulldown(Panel *g, Mouse *m){
 		}
 	}
 	if(g->state!=oldstate) pldraw(g, g->b);
-	if(hitme) plmouse(hitme, *m);
+	if(hitme) plmouse(hitme, m);
 	return g->state==DOWN;
 }
 void pl_typepulldown(Panel *p, Rune c){

sys/src/cmd/mothra/libpanel/textview.c

@@ -103,7 +103,7 @@ void pl_drawtextview(Panel *p){
  * If t is a panel word, pass the mouse event on to it
  */
 void pl_passon(Rtext *t, Mouse *m){
-	if(t && t->b==0 && t->p!=0) plmouse(t->p, *m);
+	if(t && t->b==0 && t->p!=0) plmouse(t->p, m);
 }
 int pl_hittextview(Panel *p, Mouse *m){
 	Rtext *oldhitword;

sys/src/cmd/mothra/mothra.c

@@ -90,6 +90,8 @@ Www *current=0;
 Url *selection=0;
 int logfile;
 int mothmode;
+int kickpipe[2];
+
 void docmd(Panel *, char *);
 void doprev(Panel *, int, int);
 char *urlstr(Url *);
@@ -310,7 +312,9 @@ void main(int argc, char *argv[]){
 	pltabsize(chrwidth, 8*chrwidth);
 	einit(Emouse|Ekeyboard);
 	eplumb(Eplumb, "web");
-	etimer(0, 1000);
+	if(pipe(kickpipe) < 0)
+		sysfatal("pipe: %r");
+	estart(0, kickpipe[0], 256);
 	plinit(screen->depth);
 	if(debug) notify(dienow);
 	getfonts();
@@ -394,7 +398,7 @@ void main(int argc, char *argv[]){
 			break;
 		case Emouse:
 			mouse=e.mouse;
-			plmouse(root, e.mouse);
+			plmouse(root, &mouse);
 			break;
 		case Eplumb:
 			pm=e.v;
@@ -1084,6 +1088,14 @@ void updtext(Www *w){
 	plsetpostextview(text, w->yoffs);
 	pldraw(root, screen);
 }
+void update(Www *w){
+	w->changed = 1;
+	write(kickpipe[1], "C", 1);
+}
+void finish(Www *w){
+	w->finished = 1;
+	write(kickpipe[1], "F", 1);
+}
 
 void
 mothon(Www *w, int on)

sys/src/cmd/mothra/mothra.h

@@ -78,6 +78,8 @@ enum{
 	POST,
 };
 
+void update(Www *w);
+void finish(Www *w);
 void plrdhtml(char *, int, Www *);
 void plrdplain(char *, int, Www *);
 void htmlerror(char *, int, char *, ...);	/* user-supplied routine */

sys/src/cmd/mothra/rdhtml.c

@@ -100,7 +100,7 @@ void pl_htmloutput(Hglob *g, int nsp, char *s, Field *field){
 			if(g->tp!=g->text && g->tp!=g->etext && g->tp[-1]!=' ')
 				*g->tp++=' ';
 			while(g->tp!=g->etext && *s) *g->tp++=*s++;
-			if(g->state->tag==Tag_title) g->dst->changed=1;
+			if(g->state->tag==Tag_title) update(g->dst);
 			*g->tp='\0';
 		}
 		return;
@@ -151,7 +151,7 @@ void pl_htmloutput(Hglob *g, int nsp, char *s, Field *field){
 		g->state->link[0] || g->state->image[0], ap);
 	g->para=0;
 	g->linebrk=0;
-	g->dst->changed=1;
+	update(g->dst);
 }
 
 /*
@@ -588,7 +588,7 @@ void plrdplain(char *name, int fd, Www *dst){
 	g.form=0;
 	strncpy(g.text, name, NTITLE);
 	plaintext(&g);
-	dst->finished=1;
+	finish(dst);
 }
 void plrdhtml(char *name, int fd, Www *dst){
 	Stack *sp;
@@ -1049,9 +1049,9 @@ void plrdhtml(char *name, int fd, Www *dst){
 				htmlerror(g.name, g.lineno,
 					"missing </%s> at EOF", tag[g.state->tag].name);
 		*g.tp='\0';
-		dst->changed=1;
+		update(dst);
 		getpix(dst->text, dst);
-		dst->finished=1;
+		finish(dst);
 		return;
 	}
 }