From 447efdc01d4f8922205ba26e52c9e5ff9f5cb90e Mon Sep 17 00:00:00 2001
From: Peter Hutterer <peter@cs.unisa.edu.au>
Date: Tue, 21 Nov 2006 14:46:00 +1030
Subject: [PATCH] mi:	constrain MPX cursors to screen

---
 Changelog            |  8 ++++++++
 dix/events.c         | 15 +++++++++++++--
 include/scrnintstr.h |  1 +
 mi/mipointer.c       | 15 ++++++++++++---
 4 files changed, 34 insertions(+), 5 deletions(-)

diff --git a/Changelog b/Changelog
index 3477d43ff..80e1846a8 100644
--- a/Changelog
+++ b/Changelog
@@ -24,6 +24,14 @@ Files:
 
 BUG:   Core pointer changes whenever MPX cursor changes shape.
 
+
+mi:	constrain MPX cursors to screen 
+
+Files:
+	dix/events.c
+	mi/mipointer.c
+	include/scrnintstr.h
+
 == 20.11.06 ==
 
 mi:     moved core pointer information from miSpriteScreenRec into a
diff --git a/dix/events.c b/dix/events.c
index f50e246e0..4c33fd49e 100644
--- a/dix/events.c
+++ b/dix/events.c
@@ -392,7 +392,7 @@ XineramaConstrainCursor(void)
     newBox.y1 += panoramiXdataPtr[0].y - panoramiXdataPtr[pScreen->myNum].y;
     newBox.y2 += panoramiXdataPtr[0].y - panoramiXdataPtr[pScreen->myNum].y;
 
-    (* pScreen->ConstrainCursor)(pScreen, &newBox);
+    (* pScreen->ConstrainCursor)(inputInfo.pointer, pScreen, &newBox);
 }
 
 static void
@@ -735,7 +735,7 @@ CheckPhysLimits(
     (*pScreen->CursorLimits) (pScreen, cursor, &sprite.hotLimits,
 			      &sprite.physLimits);
     sprite.confined = confineToScreen;
-    (* pScreen->ConstrainCursor)(pScreen, &sprite.physLimits);
+    (* pScreen->ConstrainCursor)(inputInfo.pointer, pScreen, &sprite.physLimits);
     if (new.x < sprite.physLimits.x1)
 	new.x = sprite.physLimits.x1;
     else
@@ -2118,7 +2118,18 @@ DefineInitialRootWindow(register WindowPtr win)
     (*pScreen->CursorLimits) (
 	pScreen, sprite.current, &sprite.hotLimits, &sprite.physLimits);
     sprite.confined = FALSE;
+#ifdef MPX
+    {
+        DeviceIntPtr pDev = inputInfo.devices;
+        while(pDev)
+        {
+            (*pScreen->ConstrainCursor) (pDev, pScreen, &sprite.physLimits);
+            pDev = pDev->next;
+        }
+    }
+#else
     (*pScreen->ConstrainCursor) (pScreen, &sprite.physLimits);
+#endif
     (*pScreen->SetCursorPosition) (pScreen, sprite.hot.x, sprite.hot.y, FALSE);
     (*pScreen->DisplayCursor) (pScreen, sprite.current);
 
diff --git a/include/scrnintstr.h b/include/scrnintstr.h
index 36135153f..4fa2919df 100644
--- a/include/scrnintstr.h
+++ b/include/scrnintstr.h
@@ -257,6 +257,7 @@ typedef    Bool (* UnrealizeFontProcPtr)(
 	FontPtr /*pFont*/);
 
 typedef    void (* ConstrainCursorProcPtr)(
+        DeviceIntPtr /*pDev*/,
 	ScreenPtr /*pScreen*/,
 	BoxPtr /*pBox*/);
 
diff --git a/mi/mipointer.c b/mi/mipointer.c
index 8f049c48e..d3f5a5471 100644
--- a/mi/mipointer.c
+++ b/mi/mipointer.c
@@ -83,8 +83,10 @@ IsMPDev(DeviceIntPtr pDev)
 static Bool miPointerRealizeCursor(ScreenPtr pScreen, CursorPtr pCursor);
 static Bool miPointerUnrealizeCursor(ScreenPtr pScreen, CursorPtr pCursor);
 static Bool miPointerDisplayCursor(ScreenPtr pScreen, CursorPtr pCursor);
-static void miPointerConstrainCursor(ScreenPtr pScreen, BoxPtr pBox);
-static void miPointerPointerNonInterestBox(ScreenPtr pScreen, BoxPtr pBox);
+static void miPointerConstrainCursor(DeviceIntPtr pDev, ScreenPtr pScreen,
+                                     BoxPtr pBox); 
+static void miPointerPointerNonInterestBox(ScreenPtr
+            pScreen, BoxPtr pBox);
 static void miPointerCursorLimits(ScreenPtr pScreen, CursorPtr pCursor,
 				  BoxPtr pHotBox, BoxPtr pTopLeftBox);
 static Bool miPointerSetCursorPosition(ScreenPtr pScreen, int x, int y,
@@ -254,10 +256,17 @@ miPointerDisplayCursor (pScreen, pCursor)
 }
 
 static void
-miPointerConstrainCursor (pScreen, pBox)
+miPointerConstrainCursor (pDev, pScreen, pBox)
+    DeviceIntPtr pDev;
     ScreenPtr	pScreen;
     BoxPtr	pBox;
 {
+#ifdef MPX
+    if (IsMPDev(pDev))
+    {
+        miMPPointers[pDev->id].limits = *pBox;
+    }
+#endif
     miPointer.limits = *pBox;
     miPointer.confined = PointerConfinedToScreen();
 }