diff options
| -rw-r--r-- | COPYING | 1 | ||||
| -rw-r--r-- | fixesproto.txt | 92 | ||||
| -rw-r--r-- | xfixesproto.h | 33 | ||||
| -rw-r--r-- | xfixeswire.h | 18 |
4 files changed, 137 insertions, 7 deletions
@@ -1,4 +1,5 @@ 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"), diff --git a/fixesproto.txt b/fixesproto.txt index 5ef8153..5903ac9 100644 --- a/fixesproto.txt +++ b/fixesproto.txt @@ -1,7 +1,7 @@ The XFIXES Extension - Version 4.0 - Document Revision 2 - 2006-12-14 + Version 5.0 + Document Revision 1 + 2010-11-15 Keith Packard keithp@keithp.com @@ -19,7 +19,7 @@ developers, in particular, + Owen Taylor for describing the issues raised with the XEMBED mechanisms and SaveSet processing and his initial extension - to handle this issue. + to handle this issue, and for pointer barriers + Bill Haneman for the design for cursor image tracking. @@ -566,6 +566,90 @@ ShowCursor Servers supporting the X Input Extension Version 2.0 or higher show all visible cursors in response to a ShowCursor request. +************* XFIXES VERSION 5 OR BETTER *********** + +12. Pointer Barriers + +Compositing managers and desktop environments may have UI elements in +particular screen locations such that for a single-headed display they +correspond to easy targets according to Fitt's Law, for example, the top +left corner. For a multi-headed environment these corners should still be +semi-impermeable. Pointer barriers allow the application to define +additional constraint on cursor motion so that these areas behave as +expected even in the face of multiple displays. + +Absolute positioning devices like touchscreens do not obey pointer barriers. +There's no advantage to target acquisition to do so, since on a touchscreen +all points are in some sense equally large, whereas for a relative +positioning device the edges and corners are infinitely large. + +WarpPointer and similar requests do not obey pointer barriers, for +essentially the same reason. + +12.1 Types + + BARRIER: XID + + BarrierDirections + + BarrierPositiveX: 1 << 0 + BarrierPositiveY: 1 << 1 + BarrierNegativeX: 1 << 2 + BarrierNegativeY: 1 << 3 + +12.2 Errors + + Barrier + +12.3 Requests + +CreatePointerBarrier + + barrier: BARRIER + drawable: DRAWABLE + x1, y2, x2, y2: INT16 + directions: CARD32 + devices: LISTofDEVICEID + + Creates a pointer barrier along the line specified by the given + coordinates on the screen associated with the given drawable. The + barrier has no spatial extent; it is simply a line along the left + or top edge of the specified pixels. Barrier coordinates are in + screen space. + + The coordinates must be axis aligned, either x1 == x2, or + y1 == y2, but not both. The varying coordinates may be specified + in any order. For x1 == x2, either y1 > y2 or y1 < y2 is valid. + If the coordinates are not valid BadValue is generated. + + Motion is allowed through the barrier in the directions specified: + setting the BarrierPositiveX bit allows travel through the barrier + in the positive X direction, etc. Nonsensical values (forbidding Y + axis travel through a vertical barrier, for example) and excess set + bits are ignored. + + If the server supports the X Input Extension version 2 or higher, + the devices element names a set of master device to apply the + barrier to. If XIAllDevices or XIAllMasterDevices are given, the + barrier applies to all master devices. If a slave device is named, + BadDevice is generated; this does not apply to slave devices named + implicitly by XIAllDevices. Naming a device multiple times is + legal, and is treated as though it were named only once. If a + device is removed, the barrier continues to apply to the remaining + devices, but will not apply to any future device with the same ID + as the removed device. Nothing special happens when all matching + devices are removed; barriers must be explicitly destroyed. + + Errors: IDChoice, Window, Value, Device + +DestroyPointerBarrier + + barrier: BARRIER + + Destroys the named barrier. + + Errors: Barrier + 99. Future compatibility This extension is not expected to remain fixed. Future changes will diff --git a/xfixesproto.h b/xfixesproto.h index ed872d1..fcf409a 100644 --- a/xfixesproto.h +++ b/xfixesproto.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"), @@ -500,6 +501,38 @@ typedef struct { #define sz_xXFixesShowCursorReq sizeof(xXFixesShowCursorReq) +/*************** Version 5.0 ******************/ + +#define Barrier CARD32 + +typedef struct { + CARD8 reqType; + CARD8 xfixesReqType; + CARD16 length B16; + Barrier barrier B32; + Window window B32; + INT16 x1 B16; + INT16 y1 B16; + INT16 x2 B16; + INT16 y2 B16; + CARD32 directions; + CARD16 pad B16; + CARD16 num_devices B16; + /* array of CARD16 devices */ +} xXFixesCreatePointerBarrierReq; + +#define sz_xXFixesCreatePointerBarrierReq 28 + +typedef struct { + CARD8 reqType; + CARD8 xfixesReqType; + CARD16 length B16; + Barrier barrier B32; +} xXFixesDestroyPointerBarrierReq; + +#define sz_xXFixesDestroyPointerBarrierReq 8 + +#undef Barrier #undef Region #undef Picture #undef Window diff --git a/xfixeswire.h b/xfixeswire.h index 7b43f09..432349a 100644 --- a/xfixeswire.h +++ b/xfixeswire.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"), @@ -47,7 +48,7 @@ #define _XFIXESWIRE_H_ #define XFIXES_NAME "XFIXES" -#define XFIXES_MAJOR 4 +#define XFIXES_MAJOR 5 #define XFIXES_MINOR 0 /*************** Version 1 ******************/ @@ -85,8 +86,11 @@ /*************** Version 4 ******************/ #define X_XFixesHideCursor 29 #define X_XFixesShowCursor 30 +/*************** Version 5 ******************/ +#define X_XFixesCreatePointerBarrier 31 +#define X_XFixesDestroyPointerBarrier 32 -#define XFixesNumberRequests (X_XFixesShowCursor+1) +#define XFixesNumberRequests (X_XFixesDestroyPointerBarrier+1) /* Selection events share one event number */ #define XFixesSelectionNotify 0 @@ -111,7 +115,8 @@ /* errors */ #define BadRegion 0 -#define XFixesNumberErrors (BadRegion+1) +#define BadBarrier 1 +#define XFixesNumberErrors (BadBarrier+1) #define SaveSetNearest 0 #define SaveSetRoot 1 @@ -124,4 +129,11 @@ #define WindowRegionBounding 0 #define WindowRegionClip 1 +/*************** Version 5 ******************/ + +#define BarrierPositiveX (1L << 0) +#define BarrierPositiveY (1L << 1) +#define BarrierNegativeX (1L << 2) +#define BarrierNegativeY (1L << 3) + #endif /* _XFIXESWIRE_H_ */ |