Swap RRScreenChangeNotifyEvent dimensions when the screen has one crtc and it's rotated.

RandR 1.1 clients expect the size fields in this event to be the unrotated
dimensions of the screen.  This behavior is "weird", but that's the way the old
code worked so we need to be bug-compatible with it.

1 files changed, 13 insertions, 5 deletions

diff --git a/randr/rrscreen.c b/randr/rrscreen.c
index ad74ac3..f83fce3 100644
--- a/randr/rrscreen.c
+++ b/randr/rrscreen.c
@@ -116,11 +116,19 @@ RRDeliverScreenEvent (ClientPtr client, WindowPtr pWin, ScreenPtr pScreen)
 
     se.sequenceNumber = client->sequence;
     se.sizeID = RR10CurrentSizeID (pScreen);
-    
-    se.widthInPixels = pScreen->width;
-    se.heightInPixels = pScreen->height;
-    se.widthInMillimeters = pScreen->mmWidth;
-    se.heightInMillimeters = pScreen->mmHeight;
+
+    if (se.rotation & (RR_Rotate_90 | RR_Rotate_270)) {
+	se.widthInPixels = pScreen->height;
+	se.heightInPixels = pScreen->width;
+	se.widthInMillimeters = pScreen->mmHeight;
+	se.heightInMillimeters = pScreen->mmWidth;
+    } else {
+	se.widthInPixels = pScreen->width;
+	se.heightInPixels = pScreen->height;
+	se.widthInMillimeters = pScreen->mmWidth;
+	se.heightInMillimeters = pScreen->mmHeight;
+    }
+
     WriteEventsToClient (client, 1, (xEvent *) &se);
 }