From: Keir Fraser <keir.fraser@citrix.com>
Date: Thu, 20 Mar 2008 12:04:51 +0000 (+0000)
Subject: ioemu: Let the USB tablet reach the far bottom and right pixels
X-Git-Tag: 3.2.1-rc1~12
X-Git-Url: http://xenbits.xensource.com/gitweb?a=commitdiff_plain;h=df64416a0a14bd470ad993f059598f67b96449c3;p=people%2Fvhanquez%2Fxen.git

ioemu: Let the USB tablet reach the far bottom and right pixels
by fixing divisions / multiplications into using width-1.

Signed-off-by: Samuel Thibault <samuel.thibault@eu.citrix.com>
xen-unstable changeset:   17189:86e64b684fb2751f8d2db7e07e88da8505008255
xen-unstable date:        Wed Mar 05 11:10:29 2008 +0000
---

diff --git a/tools/ioemu/hw/xenfb.c b/tools/ioemu/hw/xenfb.c
index bd947787e..aa646f693 100644
--- a/tools/ioemu/hw/xenfb.c
+++ b/tools/ioemu/hw/xenfb.c
@@ -1044,8 +1044,8 @@ static void xenfb_mouse_event(void *opaque,
     struct xenfb *xenfb = opaque;
     if (xenfb->abs_pointer_wanted)
 	    xenfb_send_position(xenfb,
-				dx * xenfb->ds->width / 0x7fff,
-				dy * xenfb->ds->height / 0x7fff,
+                                dx * (xenfb->ds->width - 1) / 0x7fff,
+                                dy * (xenfb->ds->height - 1) / 0x7fff,
 				dz);
     else
 	    xenfb_send_motion(xenfb, dx, dy, dz);
diff --git a/tools/ioemu/sdl.c b/tools/ioemu/sdl.c
index d2af24752..4f12a3602 100644
--- a/tools/ioemu/sdl.c
+++ b/tools/ioemu/sdl.c
@@ -279,8 +279,8 @@ static void sdl_send_mouse_event(int dx, int dy, int dz, int state)
 	}
 
 	SDL_GetMouseState(&dx, &dy);
-	dx = dx * 0x7FFF / width;
-	dy = dy * 0x7FFF / height;
+        dx = dx * 0x7FFF / (width - 1);
+        dy = dy * 0x7FFF / (height - 1);
     } else if (absolute_enabled) {
 	sdl_show_cursor();
 	absolute_enabled = 0;
diff --git a/tools/ioemu/vnc.c b/tools/ioemu/vnc.c
index 11cd94479..f2ee9ea47 100644
--- a/tools/ioemu/vnc.c
+++ b/tools/ioemu/vnc.c
@@ -1023,8 +1023,8 @@ static void pointer_event(VncState *vs, int button_mask, int x, int y)
 	dz = 1;
 
     if (vs->absolute) {
-	kbd_mouse_event(x * 0x7FFF / vs->ds->width,
-			y * 0x7FFF / vs->ds->height,
+        kbd_mouse_event(x * 0x7FFF / (vs->ds->width - 1),
+                        y * 0x7FFF / (vs->ds->height - 1),
 			dz, buttons);
     } else if (vs->has_pointer_type_change) {
 	x -= 0x7FFF;