fix drawread, add changes from david tolpin

src/libdraw/devdraw.c

@@ -744,31 +744,28 @@ drawcoord(uchar *p, uchar *maxp, int oldx, int *newx)
 int
 _drawmsgread(Display *d, void *a, int n)
 {
-	int inbuf;
+	Client *cl;
 
 	qlock(&sdraw.lk);
-	inbuf = d->obufp - d->obuf; 
-	if(n > inbuf)
-		n = inbuf;
-	memmove(a, d->obuf, n);
-	inbuf -= n;
-	if(inbuf)
-		memmove(d->obuf, d->obufp-inbuf, inbuf);
-	d->obufp = d->obuf+inbuf;
+	cl = client0;
+	if(cl->readdata == nil){
+		werrstr("no draw data");
+		goto err;
+	}
+	if(n < cl->nreaddata){
+		werrstr("short read");
+		goto err;
+	}
+	n = cl->nreaddata;
+	memmove(a, cl->readdata, cl->nreaddata);
+	free(cl->readdata);
+	cl->readdata = nil;
 	qunlock(&sdraw.lk);
 	return n;
-}
 
-static void
-drawmsgsquirrel(Display *d, void *a, int n)
-{
-	uchar *ep;
-
-	ep = d->obuf + d->obufsize;
-	if(d->obufp + n > ep)
-		abort();
-	memmove(d->obufp, a, n);
-	d->obufp += n;
+err:
+	qunlock(&sdraw.lk);
+	return -1;
 }
 
 int
@@ -1086,7 +1083,12 @@ _drawmsgwrite(Display *d, void *v, int n)
 					i->r.min.x, i->r.min.y, i->r.max.x, i->r.max.y,
 					i->clipr.min.x, i->clipr.min.y, 
 					i->clipr.max.x, i->clipr.max.y);
-			drawmsgsquirrel(d, ibuf, ni);
+			free(client->readdata);
+			client->readdata = malloc(ni);
+			if(client->readdata == nil)
+				goto Enomem;
+			memmove(client->readdata, ibuf, ni);
+			client->nreaddata = ni;
 			client->infoid = -1;
 			continue;	
 

src/libdraw/mkfile

@@ -96,6 +96,7 @@ OFILES=\
 	x11-init.$O\
 	x11-itrans.$O\
 	x11-keyboard.$O\
+	x11-keysym2ucs.$O\
 	x11-load.$O\
 	x11-mouse.$O\
 	x11-pixelbits.$O\

src/libdraw/x11-itrans.c

@@ -9,21 +9,19 @@
 #include <cursor.h>
 #include <keyboard.h>
 #include "x11-memdraw.h"
+#include "x11-keysym2ucs.h"
 
 #undef time
 
 
-static int
+static KeySym
 __xtoplan9kbd(XEvent *e)
 {
-	int ind, k, md;
+	KeySym k;
 
-	md = e->xkey.state;
-	ind = 0;
-	if(md & ShiftMask)
-		ind = 1;
-
-	k = XKeycodeToKeysym(e->xany.display, (KeyCode)e->xkey.keycode, ind);
+	if(e->xany.type != KeyPress)
+		return -1;
+	XLookupString((XKeyEvent*)e,NULL,0,&k,NULL);
 	if(k == XK_Multi_key || k == NoSymbol)
 		return -1;
 
@@ -101,7 +99,10 @@ __xtoplan9kbd(XEvent *e)
 			k = Kalt;
 			break;
 		default:		/* not ISO-1 or tty control */
-			return -1;
+			if(k>0xff) {
+				k = keysym2ucs(k);
+				if(k==-1) return -1;
+			}
 		}
 	}
 
@@ -116,7 +117,7 @@ __xtoplan9kbd(XEvent *e)
 	}
 
 	/* BUG: could/should do Alt translation here! */
-	return k;
+	return k+0;
 }
 
 static Rune*

src/libdraw/x11-keyboard.c

@@ -73,7 +73,7 @@ initkeyboard(char *file)
 	if(kc == nil)
 		return nil;
 	kc->c = chancreate(sizeof(Rune), 20);
-	threadcreate(_ioproc, kc, 4096);
+	threadcreate(_ioproc, kc, 16384);
 	return kc;
 }