mothra: fix a few errors in previous patch

- nil check pl_blue allocation, and don't do it every time pl_rtdraw is called
- fix re-adding previously removed flushimage calls
- correct format for pointer
- sysfatal in pl_drawinit on error

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

@@ -15,6 +15,7 @@
 #define	CKBORDER 2	/* space around X inside frame */
 static int plldepth;
 static Image *pl_white, *pl_light, *pl_dark, *pl_black, *pl_hilit;
+Image *pl_blue;
 int pl_drawinit(int ldepth){
 	plldepth=ldepth;
 	/* mono */
@@ -23,7 +24,8 @@ int pl_drawinit(int ldepth){
 	pl_dark=allocimage(display, Rect(0,0,1,1), screen->chan, 1, 0x555555FF);
 	pl_black=allocimage(display, Rect(0,0,1,1), screen->chan, 1, 0x000000FF);
 	pl_hilit=allocimage(display, Rect(0,0,1,1), CHAN1(CAlpha,8), 1, 0x80);
-	if(pl_white==0 || pl_light==0 || pl_black==0 || pl_dark==0) return 0;
+	pl_blue=allocimage(display, Rect(0,0,1,1), RGB24, 1, 0x0000FFFF);
+	if(pl_white==0 || pl_light==0 || pl_black==0 || pl_dark==0 || pl_blue==0) sysfatal("allocimage: %r");
 	return 1;
 }
 void pl_relief(Image *b, Image *ul, Image *lr, Rectangle r, int wid){

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

@@ -9,10 +9,8 @@ void plgrabkb(Panel *g){
 	plkbfocus=g;
 }
 void plkeyboard(Rune c){
-	if(plkbfocus){
+	if(plkbfocus)
 		plkbfocus->type(plkbfocus, c);
-		flushimage(display, 1);
-	}
 }
 
 /*
@@ -47,5 +45,4 @@ void plmouse(Panel *g, Mouse *m){
 			g->flags&=~REMOUSE;
 		g->lastmouse=hit;
 	}
-	flushimage(display, 1);
 }

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

@@ -109,6 +109,8 @@ struct Panel{
 
 Panel *plkbfocus;			/* the panel in keyboard focus */
 
+extern Image *pl_blue;
+
 int plinit(int);			/* initialization */
 void plpack(Panel *, Rectangle);	/* figure out where to put the Panel & children */
 void plmove(Panel *, Point);		/* move an already-packed panel to a new location */

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

@@ -65,7 +65,6 @@ int pl_hitpopup(Panel *g, Mouse *m){
 			if(g->state!=DOWN){
 				if(pp->save!=0){
 					draw(g->b, p->r, pp->save, 0, p->r.min);
-					flushimage(display, 1);
 					freeimage(pp->save);
 					pp->save=0;
 				}

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

@@ -175,9 +175,7 @@ void pl_rtdraw(Image *b, Rectangle r, Rtext *t, Point offs){
 	Point lp, sp;
 	Rectangle dr;
 	Image *bb;
-	Image *pl_blue;
 
-	pl_blue=allocimage(display, Rect(0,0,1,1), RGB24, 1, 0x0000FFFF);
 	bb = b;
 	if(backup==0 || backup->chan!=b->chan || rectinrect(r, backup->r)==0){
 		freeimage(backup);

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

@@ -136,7 +136,7 @@ void tw_draw(Textwin *t, int first, int last){
 	er=t->text+last;
 	for(r=t->text+first,lp=t->loc+(first-t->top);r!=er;r++,lp++){
 		if(lp->y+t->hgt>t->r.max.y){
-			fprint(2, "chr %C, index %lld of %d, loc %d %d, off bottom\n",
+			fprint(2, "chr %C, index %zd of %d, loc %d %d, off bottom\n",
 				*r, lp-t->loc, t->bot-t->top, lp->x, lp->y);
 			return;
 		}