shithub: riscv

Info  •  Files  •  Log  •  Branches

rio: avoid redrawing window text on resize for programs using libdraw

As long as the client as the mouse file open
and maintains reading the winname file of the window
after a resize we will avoid drawing the text frame
on a resize as it will be overdrawn by the client.

This reduces flicker on resize somewhat for slow systems.

--- a/sys/src/cmd/rio/dat.h

+++ b/sys/src/cmd/rio/dat.h

@@ -169,6 +169,7 @@

 	uchar		deleted;

 	uchar		mouseopen;

 	uchar		kbdopen;

+	uchar		winnameread;

 	char			*label;

 	char			*dir;

 };

--- a/sys/src/cmd/rio/wind.c

+++ b/sys/src/cmd/rio/wind.c

@@ -101,16 +101,19 @@

 	frinit(w, r, w->font, w->i, cols);

 	wsetcols(w, 1);

 	w->maxtab = maxtab*stringwidth(w->font, "0");

-	r = insetrect(w->i->r, Selborder);

-	draw(w->i, r, cols[BACK], nil, w->entire.min);

-	wfill(w);

-	wsetselect(w, w->q0, w->q1);

-	wscrdraw(w);

+	if(!w->mouseopen || !w->winnameread){

+		r = insetrect(w->i->r, Selborder);

+		draw(w->i, r, cols[BACK], nil, w->entire.min);

+		wfill(w);

+		wsetselect(w, w->q0, w->q1);

+		wscrdraw(w);

+	}

 	wborder(w, Selborder);

 	flushimage(display, 1);

 	wsetname(w);

 	w->topped = ++topped;

 	w->resized = TRUE;

+	w->winnameread = FALSE;

 	w->mouse.counter++;

 	w->wctlready = 1;

 }

@@ -751,7 +754,7 @@

 wrepaint(Window *w)

 {

 	wsetcols(w, w == input);

-	if(!w->mouseopen)

+	if(!w->mouseopen || !w->winnameread)

 		frredraw(w);

 	if(w == input)

 		wborder(w, Selborder);

@@ -1180,7 +1183,7 @@

 		flushimage(display, 1);

 		break;

 	case Refresh:

-		if(w->i==nil || Dx(w->screenr)<=0 || w->mouseopen)

+		if(w->i==nil || Dx(w->screenr)<=0)

 			break;

 		wrefresh(w);

 		flushimage(display, 1);

--- a/sys/src/cmd/rio/xfid.c

+++ b/sys/src/cmd/rio/xfid.c

@@ -345,6 +345,7 @@

 	case Qmouse:

 		w->resized = FALSE;

 		w->mouseopen = FALSE;

+		w->winnameread = FALSE;

 		if(w->i != nil)

 			wsendctlmesg(w, Refresh, w->i->r, nil);

 		break;

@@ -776,6 +777,7 @@

 			break;

 		}

 		t = estrdup(w->name);

+		w->winnameread = TRUE;

 		goto Text;

 	case Qwindow: