Mon Oct 17 14:16:38 UTC 2011

2 files changed, 0 insertions, 1112 deletions

diff --git a/extra/xorg-server/bg-none-revert.patch b/extra/xorg-server/bg-none-revert.patch
deleted file mode 100644
index 1a38f1f41..000000000
--- a/extra/xorg-server/bg-none-revert.patch
+++ /dev/null
@@ -1,58 +0,0 @@
-From 3bc6ed2d8c9028ec28015d05b60af67a194f3694 Mon Sep 17 00:00:00 2001
-From: Adam Jackson <ajax@redhat.com>
-Date: Tue, 29 Mar 2011 14:09:46 +0000
-Subject: Revert "composite: Don't backfill non-bg-None windows"
-
-This reverts commit 6dd775f57d2f94f0ddaee324aeec33b9b66ed5bc.
-
-Bugzilla: https://bugs.freedesktop.org/34427
-
-Acked-by: Alex Deucher <alexdeucher@gmail.com>
-Signed-off-by: Adam Jackson <ajax@redhat.com>
----
-diff --git a/composite/compalloc.c b/composite/compalloc.c
-index e4064f6..7164c0d 100644
---- a/composite/compalloc.c
-+++ b/composite/compalloc.c
-@@ -508,17 +508,6 @@ compUnredirectOneSubwindow (WindowPtr pParent, WindowPtr pWin)
-     return Success;
- }
- 
--static int
--bgNoneVisitWindow(WindowPtr pWin, void *null)
--{
--    if (pWin->backgroundState != BackgroundPixmap)
--	return WT_WALKCHILDREN;
--    if (pWin->background.pixmap != None)
--	return WT_WALKCHILDREN;
--
--    return WT_STOPWALKING;
--}
--
- static PixmapPtr
- compNewPixmap (WindowPtr pWin, int x, int y, int w, int h, Bool map)
- {
-@@ -539,21 +528,6 @@ compNewPixmap (WindowPtr pWin, int x, int y, int w, int h, Bool map)
-     if (!map)
- 	return pPixmap;
- 
--    /*
--     * If there's no bg=None in the tree, we're done.
--     *
--     * We could optimize this more by collection the regions of all the
--     * bg=None subwindows and feeding that in as the clip for the
--     * CopyArea below, but since window trees are shallow these days it
--     * might not be worth the effort.
--     */
--    if (TraverseTree(pWin, bgNoneVisitWindow, NULL) == WT_NOMATCH)
--	return pPixmap;
--
--    /*
--     * Copy bits from the parent into the new pixmap so that it will
--     * have "reasonable" contents in case for background None areas.
--     */
-     if (pParent->drawable.depth == pWin->drawable.depth)
-     {
- 	GCPtr	pGC = GetScratchGC (pWin->drawable.depth, pScreen);
---
-cgit v0.8.3-6-g21f6
diff --git a/extra/xorg-server/xserver-1.10-pointer-barriers.patch b/extra/xorg-server/xserver-1.10-pointer-barriers.patch
deleted file mode 100644
index 099565436..000000000
--- a/extra/xorg-server/xserver-1.10-pointer-barriers.patch
+++ /dev/null
@@ -1,1054 +0,0 @@
-From 14f1112bec18ccece8e732fe6c200a56546230c7 Mon Sep 17 00:00:00 2001
-From: Adam Jackson <ajax@redhat.com>
-Date: Thu, 17 Mar 2011 13:56:17 -0400
-Subject: [PATCH] CRTC confine and pointer barriers
-
----
- dix/events.c                |    7 +
- dix/getevents.c             |   12 +-
- include/dix.h               |    1 +
- include/protocol-versions.h |    2 +-
- mi/mipointer.c              |   16 ++-
- mi/mipointer.h              |    6 +
- randr/randr.c               |    2 +
- randr/randrstr.h            |    4 +
- randr/rrcrtc.c              |  155 ++++++++++++++++
- test/Makefile.am            |    4 +-
- xfixes/cursor.c             |  408 ++++++++++++++++++++++++++++++++++++++++++-
- xfixes/xfixes.c             |   24 ++-
- xfixes/xfixes.h             |   17 ++
- xfixes/xfixesint.h          |   16 ++
- 14 files changed, 658 insertions(+), 16 deletions(-)
-
-diff --git a/dix/events.c b/dix/events.c
-index 07f8b05..d2be84f 100644
---- a/dix/events.c
-+++ b/dix/events.c
-@@ -328,6 +328,13 @@ IsMaster(DeviceIntPtr dev)
-     return dev->type == MASTER_POINTER || dev->type == MASTER_KEYBOARD;
- }
- 
-+Bool
-+IsFloating(DeviceIntPtr dev)
-+{
-+    return GetMaster(dev, MASTER_KEYBOARD) == NULL;
-+}
-+
-+
- /**
-  * Max event opcode.
-  */
-diff --git a/dix/getevents.c b/dix/getevents.c
-index 794df42..c66e516 100644
---- a/dix/getevents.c
-+++ b/dix/getevents.c
-@@ -812,7 +812,11 @@ accelPointer(DeviceIntPtr dev, int first, int num, int *valuators, CARD32 ms)
-  * miPointerSetPosition() and then scale back into device coordinates (if
-  * needed). miPSP will change x/y if the screen was crossed.
-  *
-+ * The coordinates provided are always absolute. The parameter mode whether
-+ * it was relative or absolute movement that landed us at those coordinates.
-+ *
-  * @param dev The device to be moved.
-+ * @param mode Movement mode (Absolute or Relative)
-  * @param x Pointer to current x-axis value, may be modified.
-  * @param y Pointer to current y-axis value, may be modified.
-  * @param x_frac Fractional part of current x-axis value, may be modified.
-@@ -824,7 +828,8 @@ accelPointer(DeviceIntPtr dev, int first, int num, int *valuators, CARD32 ms)
-  * @param screeny_frac Fractional part of screen y coordinate, as above.
-  */
- static void
--positionSprite(DeviceIntPtr dev, int *x, int *y, float x_frac, float y_frac,
-+positionSprite(DeviceIntPtr dev, int mode,
-+               int *x, int *y, float x_frac, float y_frac,
-                ScreenPtr scr, int *screenx, int *screeny, float *screenx_frac, float *screeny_frac)
- {
-     int old_screenx, old_screeny;
-@@ -863,7 +868,7 @@ positionSprite(DeviceIntPtr dev, int *x, int *y, float x_frac, float y_frac,
-     old_screeny = *screeny;
-     /* This takes care of crossing screens for us, as well as clipping
-      * to the current screen. */
--    miPointerSetPosition(dev, screenx, screeny);
-+    _miPointerSetPosition(dev, mode, screenx, screeny);
- 
-     if (dev->u.master) {
-         dev->u.master->last.valuators[0] = *screenx;
-@@ -1193,7 +1198,8 @@ GetPointerEvents(EventList *events, DeviceIntPtr pDev, int type, int buttons,
- 
-     set_raw_valuators(raw, &mask, raw->valuators.data);
- 
--    positionSprite(pDev, &x, &y, x_frac, y_frac, scr, &cx, &cy, &cx_frac, &cy_frac);
-+    positionSprite(pDev, (flags & POINTER_ABSOLUTE) ? Absolute : Relative,
-+                   &x, &y, x_frac, y_frac, scr, &cx, &cy, &cx_frac, &cy_frac);
-     updateHistory(pDev, &mask, ms);
- 
-     /* Update the valuators with the true value sent to the client*/
-diff --git a/include/dix.h b/include/dix.h
-index 12e4b59..3f99098 100644
---- a/include/dix.h
-+++ b/include/dix.h
-@@ -570,6 +570,7 @@ extern Bool _X_EXPORT IsPointerDevice( DeviceIntPtr dev);
- extern Bool _X_EXPORT IsKeyboardDevice(DeviceIntPtr dev);
- extern Bool IsPointerEvent(InternalEvent *event);
- extern _X_EXPORT Bool IsMaster(DeviceIntPtr dev);
-+extern _X_EXPORT Bool IsFloating(DeviceIntPtr dev);
- 
- extern _X_HIDDEN void CopyKeyClass(DeviceIntPtr device, DeviceIntPtr master);
- extern _X_HIDDEN int CorePointerProc(DeviceIntPtr dev, int what);
-diff --git a/include/protocol-versions.h b/include/protocol-versions.h
-index 1d33bdd..1dc66ad 100644
---- a/include/protocol-versions.h
-+++ b/include/protocol-versions.h
-@@ -126,7 +126,7 @@
- #define SERVER_XF86VIDMODE_MINOR_VERSION	2
- 
- /* Fixes */
--#define SERVER_XFIXES_MAJOR_VERSION		4
-+#define SERVER_XFIXES_MAJOR_VERSION		5
- #define SERVER_XFIXES_MINOR_VERSION		0
- 
- /* X Input */
-diff --git a/mi/mipointer.c b/mi/mipointer.c
-index 554397a..85f1949 100644
---- a/mi/mipointer.c
-+++ b/mi/mipointer.c
-@@ -229,6 +229,10 @@ miPointerSetCursorPosition(DeviceIntPtr pDev, ScreenPtr pScreen,
-     SetupScreen (pScreen);
- 
-     GenerateEvent = generateEvent;
-+
-+    if (pScreen->ConstrainCursorHarder)
-+	pScreen->ConstrainCursorHarder(pDev, pScreen, Absolute, &x, &y);
-+
-     /* device dependent - must pend signal and call miPointerWarpCursor */
-     (*pScreenPriv->screenFuncs->WarpCursor) (pDev, pScreen, x, y);
-     if (!generateEvent)
-@@ -484,7 +488,7 @@ miPointerMoveNoEvent (DeviceIntPtr pDev, ScreenPtr pScreen,
- }
- 
- void
--miPointerSetPosition(DeviceIntPtr pDev, int *x, int *y)
-+_miPointerSetPosition(DeviceIntPtr pDev, int mode, int *x, int *y)
- {
-     miPointerScreenPtr	pScreenPriv;
-     ScreenPtr		pScreen;
-@@ -529,6 +533,9 @@ miPointerSetPosition(DeviceIntPtr pDev, int *x, int *y)
-     if (*y >= pPointer->limits.y2)
- 	*y = pPointer->limits.y2 - 1;
- 
-+    if (pScreen->ConstrainCursorHarder)
-+       pScreen->ConstrainCursorHarder(pDev, pScreen, mode, x, y);
-+
-     if (pPointer->x == *x && pPointer->y == *y && 
-             pPointer->pScreen == pScreen) 
-         return;
-@@ -536,6 +543,13 @@ miPointerSetPosition(DeviceIntPtr pDev, int *x, int *y)
-     miPointerMoveNoEvent(pDev, pScreen, *x, *y);
- }
- 
-+/* ABI hack */
-+void
-+miPointerSetPosition(DeviceIntPtr pDev, int *x, int *y)
-+{
-+    _miPointerSetPosition(pDev, Absolute, x, y);
-+}
-+
- void
- miPointerGetPosition(DeviceIntPtr pDev, int *x, int *y)
- {
-diff --git a/mi/mipointer.h b/mi/mipointer.h
-index 3c86110..6b6010c 100644
---- a/mi/mipointer.h
-+++ b/mi/mipointer.h
-@@ -131,6 +131,12 @@ extern _X_EXPORT void miPointerGetPosition(
- 
- /* Moves the cursor to the specified position.  May clip the co-ordinates:
-  * x and y are modified in-place. */
-+extern _X_EXPORT void _miPointerSetPosition(
-+    DeviceIntPtr pDev,
-+    int mode,
-+    int *x,
-+    int *y);
-+
- extern _X_EXPORT void miPointerSetPosition(
-     DeviceIntPtr pDev,
-     int *x,
-diff --git a/randr/randr.c b/randr/randr.c
-index 6077705..d337129 100644
---- a/randr/randr.c
-+++ b/randr/randr.c
-@@ -270,6 +270,8 @@ Bool RRScreenInit(ScreenPtr pScreen)
-     
-     wrap (pScrPriv, pScreen, CloseScreen, RRCloseScreen);
- 
-+    pScreen->ConstrainCursorHarder = RRConstrainCursorHarder;
-+
-     pScrPriv->numOutputs = 0;
-     pScrPriv->outputs = NULL;
-     pScrPriv->numCrtcs = 0;
-diff --git a/randr/randrstr.h b/randr/randrstr.h
-index 7ea6080..d8dd37d 100644
---- a/randr/randrstr.h
-+++ b/randr/randrstr.h
-@@ -297,6 +297,7 @@ typedef struct _rrScrPriv {
-     int			    rate;
-     int			    size;
- #endif
-+    Bool                   discontiguous;
- } rrScrPrivRec, *rrScrPrivPtr;
- 
- extern _X_EXPORT DevPrivateKeyRec rrPrivKeyRec;
-@@ -700,6 +701,9 @@ ProcRRGetPanning (ClientPtr client);
- int
- ProcRRSetPanning (ClientPtr client);
- 
-+void
-+RRConstrainCursorHarder (DeviceIntPtr, ScreenPtr, int, int *, int *);
-+
- /* rrdispatch.c */
- extern _X_EXPORT Bool
- RRClientKnowsRates (ClientPtr	pClient);
-diff --git a/randr/rrcrtc.c b/randr/rrcrtc.c
-index 98206a2..d4d8f2a 100644
---- a/randr/rrcrtc.c
-+++ b/randr/rrcrtc.c
-@@ -1,5 +1,6 @@
- /*
-  * Copyright © 2006 Keith Packard
-+ * Copyright 2010 Red Hat, Inc
-  *
-  * Permission to use, copy, modify, distribute, and sell this software and its
-  * documentation for any purpose is hereby granted without fee, provided that
-@@ -22,6 +23,7 @@
- 
- #include "randrstr.h"
- #include "swaprep.h"
-+#include "mipointer.h"
- 
- RESTYPE	RRCrtcType;
- 
-@@ -292,6 +294,92 @@ RRCrtcPendingProperties (RRCrtcPtr crtc)
-     return FALSE;
- }
- 
-+static void
-+crtc_bounds(RRCrtcPtr crtc, int *left, int *right, int *top, int *bottom)
-+{
-+    *left = crtc->x;
-+    *top = crtc->y;
-+
-+    switch (crtc->rotation) {
-+    case RR_Rotate_0:
-+    case RR_Rotate_180:
-+    default:
-+       *right = crtc->x + crtc->mode->mode.width;
-+       *bottom = crtc->y + crtc->mode->mode.height;
-+       return;
-+    case RR_Rotate_90:
-+    case RR_Rotate_270:
-+       *right = crtc->x + crtc->mode->mode.height;
-+       *bottom = crtc->y + crtc->mode->mode.width;
-+       return;
-+    }
-+}
-+
-+/* overlapping counts as adjacent */
-+static Bool
-+crtcs_adjacent(const RRCrtcPtr a, const RRCrtcPtr b)
-+{
-+    /* left, right, top, bottom... */
-+    int al, ar, at, ab;
-+    int bl, br, bt, bb;
-+    int cl, cr, ct, cb; /* the overlap, if any */
-+
-+    crtc_bounds(a, &al, &ar, &at, &ab);
-+    crtc_bounds(b, &bl, &br, &bt, &bb);
-+
-+    cl = max(al, bl);
-+    cr = min(ar, br);
-+    ct = max(at, bt);
-+    cb = min(ab, bb);
-+
-+    return (cl <= cr) && (ct <= cb);
-+}
-+
-+/* Depth-first search and mark all CRTCs reachable from cur */
-+static void
-+mark_crtcs (rrScrPrivPtr pScrPriv, int *reachable, int cur)
-+{
-+    int i;
-+    reachable[cur] = TRUE;
-+    for (i = 0; i < pScrPriv->numCrtcs; ++i) {
-+        if (reachable[i] || !pScrPriv->crtcs[i]->mode)
-+            continue;
-+        if (crtcs_adjacent(pScrPriv->crtcs[cur], pScrPriv->crtcs[i]))
-+            mark_crtcs(pScrPriv, reachable, i);
-+    }
-+}
-+
-+static void
-+RRComputeContiguity (ScreenPtr pScreen)
-+{
-+    rrScrPriv(pScreen);
-+    Bool discontiguous = TRUE;
-+    int i, n = pScrPriv->numCrtcs;
-+
-+    int *reachable = calloc(n, sizeof(int));
-+    if (!reachable)
-+        goto out;
-+
-+    /* Find first enabled CRTC and start search for reachable CRTCs from it */
-+    for (i = 0; i < n; ++i) {
-+        if (pScrPriv->crtcs[i]->mode) {
-+            mark_crtcs(pScrPriv, reachable, i);
-+            break;
-+        }
-+    }
-+
-+    /* Check that all enabled CRTCs were marked as reachable */
-+    for (i = 0; i < n; ++i)
-+        if (pScrPriv->crtcs[i]->mode && !reachable[i])
-+            goto out;
-+
-+    discontiguous = FALSE;
-+
-+out:
-+    free(reachable);
-+    pScrPriv->discontiguous = discontiguous;
-+}
-+
- /*
-  * Request that the Crtc be reconfigured
-  */
-@@ -306,6 +394,7 @@ RRCrtcSet (RRCrtcPtr    crtc,
- {
-     ScreenPtr	pScreen = crtc->pScreen;
-     Bool	ret = FALSE;
-+    Bool	recompute = TRUE;
-     rrScrPriv(pScreen);
- 
-     /* See if nothing changed */
-@@ -318,6 +407,7 @@ RRCrtcSet (RRCrtcPtr    crtc,
- 	!RRCrtcPendingProperties (crtc) &&
- 	!RRCrtcPendingTransform (crtc))
-     {
-+	recompute = FALSE;
- 	ret = TRUE;
-     }
-     else
-@@ -381,6 +471,10 @@ RRCrtcSet (RRCrtcPtr    crtc,
- 		RRPostPendingProperties (outputs[o]);
- 	}
-     }
-+
-+    if (recompute)
-+       RRComputeContiguity(pScreen);
-+
-     return ret;
- }
- 
-@@ -1349,3 +1443,64 @@ ProcRRGetCrtcTransform (ClientPtr client)
-     free(reply);
-     return Success;
- }
-+
-+void
-+RRConstrainCursorHarder(DeviceIntPtr pDev, ScreenPtr pScreen, int mode, int *x, int *y)
-+{
-+    rrScrPriv (pScreen);
-+    int i;
-+
-+    /* intentional dead space -> let it float */
-+    if (pScrPriv->discontiguous)
-+       return;
-+
-+    /* if we're moving inside a crtc, we're fine */
-+    for (i = 0; i < pScrPriv->numCrtcs; i++) {
-+       RRCrtcPtr crtc = pScrPriv->crtcs[i];
-+
-+       int left, right, top, bottom;
-+
-+       if (!crtc->mode)
-+           continue;
-+
-+       crtc_bounds(crtc, &left, &right, &top, &bottom);
-+
-+       if ((*x >= left) && (*x <= right) && (*y >= top) && (*y <= bottom))
-+           return;
-+    }
-+
-+    /* if we're trying to escape, clamp to the CRTC we're coming from */
-+    for (i = 0; i < pScrPriv->numCrtcs; i++) {
-+       RRCrtcPtr crtc = pScrPriv->crtcs[i];
-+       int nx, ny;
-+       int left, right, top, bottom;
-+
-+       if (!crtc->mode)
-+           continue;
-+
-+       crtc_bounds(crtc, &left, &right, &top, &bottom);
-+       miPointerGetPosition(pDev, &nx, &ny);
-+
-+       if ((nx >= left) && (nx <= right) && (ny >= top) && (ny <= bottom)) {
-+           if ((*x <= left) || (*x >= right)) {
-+               int dx = *x - nx;
-+
-+               if (dx > 0)
-+                   *x = right;
-+               else if (dx < 0)
-+                   *x = left;
-+           }
-+
-+           if ((*y <= top) || (*y >= bottom)) {
-+               int dy = *y - ny;
-+
-+               if (dy > 0)
-+                   *y = bottom;
-+               else if (dy < 0)
-+                   *y = top;
-+           }
-+
-+           return;
-+       }
-+    }
-+}
-diff --git a/test/Makefile.am b/test/Makefile.am
-index 456221e..ccdb859 100644
---- a/test/Makefile.am
-+++ b/test/Makefile.am
-@@ -1,6 +1,6 @@
- if UNITTESTS
- SUBDIRS= . xi2
--check_PROGRAMS = xkb input xtest
-+check_PROGRAMS = xkb input xtest list fixes
- check_LTLIBRARIES = libxservertest.la
- 
- TESTS=$(check_PROGRAMS)
-@@ -16,6 +16,8 @@ endif
- xkb_LDADD=$(TEST_LDADD)
- input_LDADD=$(TEST_LDADD)
- xtest_LDADD=$(TEST_LDADD)
-+list_LDADD=$(TEST_LDADD)
-+fixes_LDADD=$(TEST_LDADD)
- 
- libxservertest_la_LIBADD = \
-             $(XSERVER_LIBS) \
-diff --git a/xfixes/cursor.c b/xfixes/cursor.c
-index fb608f6..5c55c95 100644
---- a/xfixes/cursor.c
-+++ b/xfixes/cursor.c
-@@ -1,5 +1,6 @@
- /*
-  * Copyright (c) 2006, Oracle and/or its affiliates. All rights reserved.
-+ * Copyright 2010 Red Hat, Inc.
-  *
-  * Permission is hereby granted, free of charge, to any person obtaining a
-  * copy of this software and associated documentation files (the "Software"),
-@@ -50,13 +51,16 @@
- #include "cursorstr.h"
- #include "dixevents.h"
- #include "servermd.h"
-+#include "mipointer.h"
- #include "inputstr.h"
- #include "windowstr.h"
- #include "xace.h"
-+#include "list.h"
- 
- static RESTYPE		CursorClientType;
- static RESTYPE		CursorHideCountType;
- static RESTYPE		CursorWindowType;
-+RESTYPE			PointerBarrierType;
- static CursorPtr	CursorCurrent[MAXDEVICES];
- 
- static DevPrivateKeyRec CursorScreenPrivateKeyRec;
-@@ -107,6 +111,14 @@ typedef struct _CursorHideCountRec {
-     XID			 resource;
- } CursorHideCountRec;
- 
-+typedef struct PointerBarrierClient *PointerBarrierClientPtr;
-+
-+struct PointerBarrierClient {
-+    ScreenPtr screen;
-+    struct PointerBarrier barrier;
-+    struct list entry;
-+};
-+
- /*
-  * Wrap DisplayCursor to catch cursor change events
-  */
-@@ -114,7 +126,9 @@ typedef struct _CursorHideCountRec {
- typedef struct _CursorScreen {
-     DisplayCursorProcPtr	DisplayCursor;
-     CloseScreenProcPtr		CloseScreen;
-+    ConstrainCursorHarderProcPtr ConstrainCursorHarder;
-     CursorHideCountPtr          pCursorHideCounts;
-+    struct list                 barriers;
- } CursorScreenRec, *CursorScreenPtr;
- 
- #define GetCursorScreen(s) ((CursorScreenPtr)dixLookupPrivate(&(s)->devPrivates, CursorScreenPrivateKey))
-@@ -184,9 +198,11 @@ CursorCloseScreen (int index, ScreenPtr pScreen)
-     Bool		ret;
-     CloseScreenProcPtr	close_proc;
-     DisplayCursorProcPtr display_proc;
-+    ConstrainCursorHarderProcPtr constrain_proc;
- 
-     Unwrap (cs, pScreen, CloseScreen, close_proc);
-     Unwrap (cs, pScreen, DisplayCursor, display_proc);
-+    Unwrap (cs, pScreen, ConstrainCursorHarder, constrain_proc);
-     deleteCursorHideCountsForScreen(pScreen);
-     ret = (*pScreen->CloseScreen) (index, pScreen);
-     free(cs);
-@@ -1029,6 +1045,391 @@ CursorFreeWindow (pointer data, XID id)
-     return 1;
- }
- 
-+static BOOL
-+barrier_is_horizontal(const struct PointerBarrier *barrier)
-+{
-+    return barrier->y1 == barrier->y2;
-+}
-+
-+static BOOL
-+barrier_is_vertical(const struct PointerBarrier *barrier)
-+{
-+    return barrier->x1 == barrier->x2;
-+}
-+
-+/**
-+ * @return The set of barrier movement directions the movement vector
-+ * x1/y1 → x2/y2 represents.
-+ */
-+int
-+barrier_get_direction(int x1, int y1, int x2, int y2)
-+{
-+    int direction = 0;
-+
-+    /* which way are we trying to go */
-+    if (x2 > x1)
-+	direction |= BarrierPositiveX;
-+    if (x2 < x1)
-+	direction |= BarrierNegativeX;
-+    if (y2 > y1)
-+	direction |= BarrierPositiveY;
-+    if (y2 < y1)
-+	direction |= BarrierNegativeY;
-+
-+    return direction;
-+}
-+
-+/**
-+ * Test if the barrier may block movement in the direction defined by
-+ * x1/y1 → x2/y2. This function only tests whether the directions could be
-+ * blocked, it does not test if the barrier actually blocks the movement.
-+ *
-+ * @return TRUE if the barrier blocks the direction of movement or FALSE
-+ * otherwise.
-+ */
-+BOOL
-+barrier_is_blocking_direction(const struct PointerBarrier *barrier, int direction)
-+{
-+    /* Barriers define which way is ok, not which way is blocking */
-+    return (barrier->directions & direction) != direction;
-+}
-+
-+/**
-+ * Test if the movement vector x1/y1 → x2/y2 is intersecting with the
-+ * barrier. A movement vector with the startpoint or endpoint on the barrier
-+ * itself counts as intersecting.
-+ *
-+ * @param x1 X start coordinate of movement vector
-+ * @param y1 Y start coordinate of movement vector
-+ * @param x2 X end coordinate of movement vector
-+ * @param y2 Y end coordinate of movement vector
-+ * @param[out] distance The distance between the start point and the
-+ * intersection with the barrier (if applicable).
-+ * @return TRUE if the barrier intersects with the given vector
-+ */
-+BOOL
-+barrier_is_blocking(const struct PointerBarrier *barrier,
-+		    int x1, int y1, int x2, int y2,
-+		    double *distance)
-+{
-+    BOOL rc = FALSE;
-+    float ua, ub, ud;
-+    int dir = barrier_get_direction(x1, y1, x2, y2);
-+
-+    /* Algorithm below doesn't handle edge cases well, hence the extra
-+     * checks. */
-+    if (barrier_is_vertical(barrier)) {
-+	/* handle immediate barrier adjacency, moving away */
-+	if (dir & BarrierPositiveX && x1 == barrier->x1)
-+	    return FALSE;
-+	if (dir & BarrierNegativeX && x1 == (barrier->x1 - 1))
-+	    return FALSE;
-+	/* startpoint on barrier */
-+	if (x1 == barrier->x1 && y1 >= barrier->y1 && y1 <= barrier->y2) {
-+	    *distance = 0;
-+	    return TRUE;
-+	}
-+	/* endpoint on barrier */
-+	if (x2 == barrier->x1 && y2 >= barrier->y1 && y2 <= barrier->y2) {
-+	    *distance = abs(x2 - x1);
-+	    return TRUE;
-+        }
-+    } else {
-+	/* handle immediate barrier adjacency, moving away */
-+	if (dir & BarrierPositiveY && y1 == barrier->y1)
-+	    return FALSE;
-+	if (dir & BarrierNegativeY && y1 == (barrier->y1 - 1))
-+	    return FALSE;
-+	/* startpoint on barrier */
-+	if (y1 == barrier->y1 && x1 >= barrier->x1 && x1 <= barrier->x2) {
-+	    *distance = 0;
-+	    return TRUE;
-+        }
-+	/* endpoint on barrier */
-+	if (y2 == barrier->y1 && x2 >= barrier->x1 && x2 <= barrier->x2) {
-+	    *distance = abs(y2 - y1);
-+	    return TRUE;
-+        }
-+    }
-+
-+    /* not an edge case, compute distance */
-+    ua = 0;
-+    ud = (barrier->y2 - barrier->y1) * (x2 - x1) - (barrier->x2 - barrier->x1) * (y2 - y1);
-+    if (ud != 0) {
-+	ua = ((barrier->x2 - barrier->x1) * (y1 - barrier->y1) -
-+	     (barrier->y2 - barrier->y1) * (x1 - barrier->x1)) / ud;
-+	ub = ((x2 - x1) * (y1 - barrier->y1) -
-+	     (y2 - y1) * (x1 - barrier->x1)) / ud;
-+	if (ua < 0 || ua > 1 || ub < 0 || ub > 1)
-+	    ua = 0;
-+    }
-+
-+    if (ua > 0 && ua <= 1)
-+    {
-+	double ix = barrier->x1 + ua * (barrier->x2 - barrier->x1);
-+	double iy = barrier->y1 + ua * (barrier->y2 - barrier->y1);
-+
-+	*distance = sqrt(pow(x1 - ix, 2) + pow(y1 - iy, 2));
-+	rc = TRUE;
-+    }
-+
-+    return rc;
-+}
-+
-+/**
-+ * Find the nearest barrier that is blocking movement from x1/y1 to x2/y2.
-+ *
-+ * @param dir Only barriers blocking movement in direction dir are checked
-+ * @param x1 X start coordinate of movement vector
-+ * @param y1 Y start coordinate of movement vector
-+ * @param x2 X end coordinate of movement vector
-+ * @param y2 Y end coordinate of movement vector
-+ * @return The barrier nearest to the movement origin that blocks this movement.
-+ */
-+static struct PointerBarrier*
-+barrier_find_nearest(CursorScreenPtr cs, int dir,
-+		     int x1, int y1, int x2, int y2)
-+{
-+    struct PointerBarrierClient *c;
-+    struct PointerBarrier *nearest = NULL;
-+    double min_distance = INT_MAX; /* can't get higher than that in X anyway */
-+
-+    list_for_each_entry(c, &cs->barriers, entry) {
-+	struct PointerBarrier *b = &c->barrier;
-+	double distance;
-+
-+	if (!barrier_is_blocking_direction(b, dir))
-+	    continue;
-+
-+	if (barrier_is_blocking(b, x1, y1, x2, y2, &distance))
-+	{
-+	    if (min_distance > distance)
-+	    {
-+		min_distance = distance;
-+		nearest = b;
-+	    }
-+	}
-+    }
-+
-+    return nearest;
-+}
-+
-+/**
-+ * Clamp to the given barrier given the movement direction specified in dir.
-+ *
-+ * @param barrier The barrier to clamp to
-+ * @param dir The movement direction
-+ * @param[out] x The clamped x coordinate.
-+ * @param[out] y The clamped x coordinate.
-+ */
-+void
-+barrier_clamp_to_barrier(struct PointerBarrier *barrier, int dir, int *x, int *y)
-+{
-+    if (barrier_is_vertical(barrier)) {
-+	if ((dir & BarrierNegativeX) & ~barrier->directions)
-+	    *x = barrier->x1;
-+	if ((dir & BarrierPositiveX) & ~barrier->directions)
-+	    *x = barrier->x1 - 1;
-+    }
-+    if (barrier_is_horizontal(barrier))
-+    {
-+	if ((dir & BarrierNegativeY) & ~barrier->directions)
-+	    *y = barrier->y1;
-+	if ((dir & BarrierPositiveY) & ~barrier->directions)
-+	    *y = barrier->y1 - 1;
-+    }
-+}
-+
-+static void
-+CursorConstrainCursorHarder(DeviceIntPtr dev, ScreenPtr screen, int mode, int *x, int *y)
-+{
-+    CursorScreenPtr cs = GetCursorScreen(screen);
-+
-+    if (!list_is_empty(&cs->barriers) && !IsFloating(dev) && mode == Relative) {
-+	int ox, oy;
-+	int dir;
-+	struct PointerBarrier *nearest = NULL;
-+
-+	/* where are we coming from */
-+	miPointerGetPosition(dev, &ox, &oy);
-+
-+	/* How this works:
-+	 * Given the origin and the movement vector, get the nearest barrier
-+	 * to the origin that is blocking the movement.
-+	 * Clamp to that barrier.
-+	 * Then, check from the clamped position to the original
-+	 * destination, again finding the nearest barrier and clamping.
-+	 */
-+	dir = barrier_get_direction(ox, oy, *x, *y);
-+
-+	nearest = barrier_find_nearest(cs, dir, ox, oy, *x, *y);
-+	if (nearest) {
-+	    barrier_clamp_to_barrier(nearest, dir, x, y);
-+
-+	    if (barrier_is_vertical(nearest)) {
-+		dir &= ~(BarrierNegativeX | BarrierPositiveX);
-+		ox = *x;
-+	    } else if (barrier_is_horizontal(nearest)) {
-+		dir &= ~(BarrierNegativeY | BarrierPositiveY);
-+		oy = *y;
-+	    }
-+
-+	    nearest = barrier_find_nearest(cs, dir, ox, oy, *x, *y);
-+	    if (nearest) {
-+		barrier_clamp_to_barrier(nearest, dir, x, y);
-+	    }
-+	}
-+    }
-+
-+    if (cs->ConstrainCursorHarder) {
-+	screen->ConstrainCursorHarder = cs->ConstrainCursorHarder;
-+	screen->ConstrainCursorHarder(dev, screen, mode, x, y);
-+	screen->ConstrainCursorHarder = CursorConstrainCursorHarder;
-+    }
-+}
-+
-+static struct PointerBarrierClient *
-+CreatePointerBarrierClient(ScreenPtr screen, ClientPtr client,
-+			   xXFixesCreatePointerBarrierReq *stuff)
-+{
-+    CursorScreenPtr cs = GetCursorScreen(screen);
-+    struct PointerBarrierClient *ret = malloc(sizeof(*ret));
-+
-+    if (ret) {
-+	ret->screen = screen;
-+	ret->barrier.x1 = min(stuff->x1, stuff->x2);
-+	ret->barrier.x2 = max(stuff->x1, stuff->x2);
-+	ret->barrier.y1 = min(stuff->y1, stuff->y2);
-+	ret->barrier.y2 = max(stuff->y1, stuff->y2);
-+	ret->barrier.directions = stuff->directions & 0x0f;
-+	if (barrier_is_horizontal(&ret->barrier))
-+	    ret->barrier.directions &= ~(BarrierPositiveX | BarrierNegativeX);
-+	if (barrier_is_vertical(&ret->barrier))
-+	    ret->barrier.directions &= ~(BarrierPositiveY | BarrierNegativeY);
-+	list_add(&ret->entry, &cs->barriers);
-+    }
-+
-+    return ret;
-+}
-+
-+int
-+ProcXFixesCreatePointerBarrier (ClientPtr client)
-+{
-+    int err;
-+    WindowPtr pWin;
-+    struct PointerBarrierClient *barrier;
-+    struct PointerBarrier b;
-+    REQUEST (xXFixesCreatePointerBarrierReq);
-+
-+    REQUEST_SIZE_MATCH(xXFixesCreatePointerBarrierReq);
-+    LEGAL_NEW_RESOURCE(stuff->barrier, client);
-+
-+    err = dixLookupWindow(&pWin, stuff->window, client, DixReadAccess);
-+    if (err != Success) {
-+	client->errorValue = stuff->window;
-+	return err;
-+    }
-+
-+    /* This sure does need fixing. */
-+    if (stuff->num_devices)
-+	return BadImplementation;
-+
-+    b.x1 = stuff->x1;
-+    b.x2 = stuff->x2;
-+    b.y1 = stuff->y1;
-+    b.y2 = stuff->y2;
-+
-+    if (!barrier_is_horizontal(&b) && !barrier_is_vertical(&b))
-+	return BadValue;
-+
-+    /* no 0-sized barriers */
-+    if (barrier_is_horizontal(&b) && barrier_is_vertical(&b))
-+	return BadValue;
-+
-+    if (!(barrier = CreatePointerBarrierClient(pWin->drawable.pScreen,
-+					       client, stuff)))
-+	return BadAlloc;
-+
-+    if (!AddResource(stuff->barrier, PointerBarrierType, &barrier->barrier))
-+	return BadAlloc;
-+
-+    return Success;
-+}
-+
-+int
-+SProcXFixesCreatePointerBarrier (ClientPtr client)
-+{
-+    int n;
-+    REQUEST(xXFixesCreatePointerBarrierReq);
-+
-+    swaps(&stuff->length, n);
-+    REQUEST_SIZE_MATCH(xXFixesCreatePointerBarrierReq);
-+    swapl(&stuff->barrier, n);
-+    swapl(&stuff->window, n);
-+    swaps(&stuff->x1, n);
-+    swaps(&stuff->y1, n);
-+    swaps(&stuff->x2, n);
-+    swaps(&stuff->y2, n);
-+    swapl(&stuff->directions, n);
-+    return ProcXFixesVector[stuff->xfixesReqType](client);
-+}
-+
-+static int
-+CursorFreeBarrier(void *data, XID id)
-+{
-+    struct PointerBarrierClient *b = NULL, *barrier;
-+    ScreenPtr screen;
-+    CursorScreenPtr cs;
-+
-+    barrier = container_of(data, struct PointerBarrierClient, barrier);
-+    screen = barrier->screen;
-+    cs = GetCursorScreen(screen);
-+
-+    /* find and unlink from the screen private */
-+    list_for_each_entry(b, &cs->barriers, entry) {
-+	if (b == barrier) {
-+	    list_del(&b->entry);
-+	    break;
-+	}
-+    }
-+
-+    free(barrier);
-+    return Success;
-+}
-+
-+int
-+ProcXFixesDestroyPointerBarrier (ClientPtr client)
-+{
-+    int err;
-+    void *barrier;
-+    REQUEST (xXFixesDestroyPointerBarrierReq);
-+
-+    REQUEST_SIZE_MATCH(xXFixesDestroyPointerBarrierReq);
-+
-+    err = dixLookupResourceByType((void **)&barrier, stuff->barrier,
-+				  PointerBarrierType, client,
-+				  DixDestroyAccess);
-+    if (err != Success) {
-+	client->errorValue = stuff->barrier;
-+	return err;
-+    }
-+
-+    FreeResource(stuff->barrier, RT_NONE);
-+    return Success;
-+}
-+
-+int
-+SProcXFixesDestroyPointerBarrier (ClientPtr client)
-+{
-+    int n;
-+    REQUEST(xXFixesDestroyPointerBarrierReq);
-+
-+    swaps(&stuff->length, n);
-+    REQUEST_SIZE_MATCH(xXFixesDestroyPointerBarrierReq);
-+    swapl(&stuff->barrier, n);
-+    return ProcXFixesVector[stuff->xfixesReqType](client);
-+}
-+
- Bool
- XFixesCursorInit (void)
- {
-@@ -1048,8 +1449,10 @@ XFixesCursorInit (void)
- 	cs = (CursorScreenPtr) calloc(1, sizeof (CursorScreenRec));
- 	if (!cs)
- 	    return FALSE;
-+	list_init(&cs->barriers);
- 	Wrap (cs, pScreen, CloseScreen, CursorCloseScreen);
- 	Wrap (cs, pScreen, DisplayCursor, CursorDisplayCursor);
-+	Wrap (cs, pScreen, ConstrainCursorHarder, CursorConstrainCursorHarder);
- 	cs->pCursorHideCounts = NULL;
- 	SetCursorScreen (pScreen, cs);
-     }
-@@ -1059,7 +1462,10 @@ XFixesCursorInit (void)
- 						"XFixesCursorHideCount");
-     CursorWindowType = CreateNewResourceType(CursorFreeWindow,
- 					     "XFixesCursorWindow");
-+    PointerBarrierType = CreateNewResourceType(CursorFreeBarrier,
-+					      "XFixesPointerBarrier");
- 
--    return CursorClientType && CursorHideCountType && CursorWindowType;
-+    return CursorClientType && CursorHideCountType && CursorWindowType &&
-+	   PointerBarrierType;
- }
- 
-diff --git a/xfixes/xfixes.c b/xfixes/xfixes.c
-index e8c7bf1..a57884b 100644
---- a/xfixes/xfixes.c
-+++ b/xfixes/xfixes.c
-@@ -1,5 +1,6 @@
- /*
-  * Copyright (c) 2006, Oracle and/or its affiliates. All rights reserved.
-+ * Copyright 2010 Red Hat, Inc.
-  *
-  * Permission is hereby granted, free of charge, to any person obtaining a
-  * copy of this software and associated documentation files (the "Software"),
-@@ -47,10 +48,6 @@
- 
- #include "xfixesint.h"
- #include "protocol-versions.h"
--/*
-- * Must use these instead of the constants from xfixeswire.h.  They advertise
-- * what we implement, not what the protocol headers define.
-- */
- 
- static unsigned char	XFixesReqCode;
- int		XFixesEventBase;
-@@ -97,11 +94,12 @@ ProcXFixesQueryVersion(ClientPtr client)
- 
- /* Major version controls available requests */
- static const int version_requests[] = {
--    X_XFixesQueryVersion,	/* before client sends QueryVersion */
--    X_XFixesGetCursorImage,	/* Version 1 */
--    X_XFixesChangeCursorByName,	/* Version 2 */
--    X_XFixesExpandRegion,	/* Version 3 */
--    X_XFixesShowCursor,	        /* Version 4 */
-+    X_XFixesQueryVersion,	    /* before client sends QueryVersion */
-+    X_XFixesGetCursorImage,	    /* Version 1 */
-+    X_XFixesChangeCursorByName,	    /* Version 2 */
-+    X_XFixesExpandRegion,	    /* Version 3 */
-+    X_XFixesShowCursor,		    /* Version 4 */
-+    X_XFixesDestroyPointerBarrier,  /* Version 5 */
- };
- 
- #define NUM_VERSION_REQUESTS	(sizeof (version_requests) / sizeof (version_requests[0]))
-@@ -142,6 +140,9 @@ int	(*ProcXFixesVector[XFixesNumberRequests])(ClientPtr) = {
- /*************** Version 4 ****************/
-     ProcXFixesHideCursor,
-     ProcXFixesShowCursor,
-+/*************** Version 5 ****************/
-+    ProcXFixesCreatePointerBarrier,
-+    ProcXFixesDestroyPointerBarrier,
- };
- 
- static int
-@@ -205,6 +206,9 @@ static int (*SProcXFixesVector[XFixesNumberRequests])(ClientPtr) = {
- /*************** Version 4 ****************/
-     SProcXFixesHideCursor,
-     SProcXFixesShowCursor,
-+/*************** Version 5 ****************/
-+    SProcXFixesCreatePointerBarrier,
-+    SProcXFixesDestroyPointerBarrier,
- };
- 
- static int
-@@ -260,6 +264,8 @@ XFixesExtensionInit(void)
- 	EventSwapVector[XFixesEventBase + XFixesCursorNotify] =
- 	    (EventSwapPtr) SXFixesCursorNotifyEvent;
- 	SetResourceTypeErrorValue(RegionResType, XFixesErrorBase + BadRegion);
-+	SetResourceTypeErrorValue(PointerBarrierType,
-+				  XFixesErrorBase + BadBarrier);
-     }
- }
- 
-diff --git a/xfixes/xfixes.h b/xfixes/xfixes.h
-index 1638350..5765e64 100644
---- a/xfixes/xfixes.h
-+++ b/xfixes/xfixes.h
-@@ -30,6 +30,7 @@
- #include "resource.h"
- 
- extern _X_EXPORT RESTYPE RegionResType;
-+extern _X_EXPORT RESTYPE PointerBarrierType;
- extern _X_EXPORT int XFixesErrorBase;
- 
- #define VERIFY_REGION(pRegion, rid, client, mode)			\
-@@ -51,5 +52,21 @@ extern _X_EXPORT int XFixesErrorBase;
- extern _X_EXPORT RegionPtr
- XFixesRegionCopy (RegionPtr pRegion);
- 
-+struct PointerBarrier {
-+    CARD16 x1, x2, y1, y2;
-+    CARD32 directions;
-+};
-+
-+
-+extern int
-+barrier_get_direction(int, int, int, int);
-+extern BOOL
-+barrier_is_blocking(const struct PointerBarrier*, int, int, int, int, double*);
-+extern BOOL
-+barrier_is_blocking_direction(const struct PointerBarrier*, int);
-+extern void
-+barrier_clamp_to_barrier(struct PointerBarrier *barrier, int dir, int *x, int *y);
-+
-+
- 
- #endif /* _XFIXES_H_ */
-diff --git a/xfixes/xfixesint.h b/xfixes/xfixesint.h
-index d005369..6ba276e 100644
---- a/xfixes/xfixesint.h
-+++ b/xfixes/xfixesint.h
-@@ -1,5 +1,6 @@
- /*
-  * Copyright (c) 2006, Oracle and/or its affiliates. All rights reserved.
-+ * Copyright 2010 Red Hat, Inc.
-  *
-  * Permission is hereby granted, free of charge, to any person obtaining a
-  * copy of this software and associated documentation files (the "Software"),
-@@ -278,6 +279,21 @@ ProcXFixesShowCursor (ClientPtr client);
- int 
- SProcXFixesShowCursor (ClientPtr client);
- 
-+/* Version 5 */
-+
-+int
-+ProcXFixesCreatePointerBarrier (ClientPtr client);
-+
-+int
-+SProcXFixesCreatePointerBarrier (ClientPtr client);
-+
-+int
-+ProcXFixesDestroyPointerBarrier (ClientPtr client);
-+
-+int
-+SProcXFixesDestroyPointerBarrier (ClientPtr client);
-+
-+/* Xinerama */
- extern int (*PanoramiXSaveXFixesVector[XFixesNumberRequests])(ClientPtr);
- void PanoramiXFixesInit (void);
- void PanoramiXFixesReset (void);
--- 
-1.7.4
-