shithub: misc

ref: 001e60ea4b45fec9cb40ab8fbbebc334b4d3e9f4
dir: /hidpi-2fs.patch/

diff 8076b346fc51790964070d39e65c0afaaad49a0f uncommitted
r--- a/sys/src/9/port/devdraw.c
+++ b/sys/src/9/port/devdraw.c
@@ -15,6 +15,7 @@
 enum
 {
 	Qtopdir		= 0,
+	Qgeom,
 	Qnew,
 	Qwinname,
 	Q3rd,
@@ -262,14 +263,22 @@
 	 */
 	switch(t){
 	case Q2nd:
-		if(s == 0){
+		if(s == 0 || s == 1){
 	case Qnew:
-			mkqid(&q, Qnew, 0, QTFILE);
-			devdir(c, q, "new", 0, eve, 0666, dp);
-			return 1;
+			if (s == 0) {
+				mkqid(&q, Qnew, 0, QTFILE);
+				devdir(c, q, "new", 0, eve, 0666, dp);
+				return 1;
+			}
+	case Qgeom:
+			if (s == 1) {
+				mkqid(&q, Qgeom, 0, QTFILE);
+				devdir(c, q, "geom", 0, eve, 0666, dp);
+				return 1;
+			}
 		}
-		if(s <= sdraw.nclient){
-			cl = sdraw.client[s-1];
+		if(s <= sdraw.nclient+1){
+			cl = sdraw.client[s-2];
 			if(cl == nil)
 				return 0;
 			sprint(up->genbuf, "%d", cl->clientid);
@@ -812,9 +821,9 @@
 	int slot;
 
 	slot = CLIENTPATH(path);
-	if(slot == 0)
+	if(slot < 2)
 		return nil;
-	cl = sdraw.client[slot-1];
+	cl = sdraw.client[slot-2];
 	if(cl==0 || cl->clientid==0)
 		return nil;
 	return cl;
@@ -1024,7 +1033,7 @@
 		cl = drawnewclient();
 		if(cl == 0)
 			error(Enodev);
-		c->qid.path = Qctl|((cl->slot+1)<<QSHIFT);
+		c->qid.path = Qctl|((cl->slot+2)<<QSHIFT);
 	}
 
 	switch(QID(c->qid)){
@@ -1031,6 +1040,9 @@
 	case Qwinname:
 		break;
 
+	case Qgeom:
+		break;
+
 	case Qnew:
 		break;
 
@@ -1124,7 +1136,7 @@
 long
 drawread(Chan *c, void *a, long n, vlong off)
 {
-	int index, m;
+	int dpi, index, m;
 	ulong red, green, blue;
 	Client *cl;
 	uchar *p;
@@ -1139,7 +1151,8 @@
 	if(QID(c->qid) == Qwinname)
 		return readstr(off, a, n, screenname);
 
-	cl = drawclient(c);
+	if(QID(c->qid) != Qgeom)
+		cl = drawclient(c);
 	dlock();
 	if(waserror()){
 		dunlock();
@@ -1146,6 +1159,21 @@
 		nexterror();
 	}
 	switch(QID(c->qid)){
+	case Qgeom:
+		i = screenimage;
+		if(i == nil)
+			error(Enodrawimage);
+		if((p = (uchar*)getconf("dpi")) == nil || (dpi = atoi((char*)p)) == 0){
+			dpi=100;
+		}
+		p = malloc(6*12+1);
+		if(p == 0)
+			error(Enomem);
+		sprint((char*)p, "%11d %11d %11d %11d %11d %11d\n", i->r.min.x, i->r.min.y, i->r.max.x, i->r.max.y, dpi, dpi);
+		n = readstr(offset, a, n, (char*)p);
+		free(p);
+		break;
+
 	case Qctl:
 		if(n < 12*12)
 			error(Eshortread);
@@ -1253,13 +1281,14 @@
 static long
 drawwrite(Chan *c, void *a, long n, vlong)
 {
-	char buf[128], *fields[4], *q;
+	char buf[128], *fields[6], *q;
 	Client *cl;
 	int i, m, red, green, blue, x;
 
 	if(c->qid.type & QTDIR)
 		error(Eisdir);
-	cl = drawclient(c);
+	if(QID(c->qid) != Qgeom)
+		cl = drawclient(c);
 	dlock();
 	if(waserror()){
 		drawwakeall();
@@ -1267,6 +1296,12 @@
 		nexterror();
 	}
 	switch(QID(c->qid)){
+	case Qgeom:
+		if(tokenize(a, fields, nelem(fields)) != 6)
+			error(Ebadarg);
+		n = strlen(a);
+		break;
+
 	case Qctl:
 		if(n != 4)
 			error("unknown draw control request");