116 lines
4.1 KiB
C
116 lines
4.1 KiB
C
/*
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Copyright 2007 Peter Hutterer <peter@cs.unisa.edu.au>
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Permission to use, copy, modify, distribute, and sell this software and its
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documentation for any purpose is hereby granted without fee, provided that
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the above copyright notice appear in all copies and that both that
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copyright notice and this permission notice appear in supporting
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documentation.
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The above copyright notice and this permission notice shall be included
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in all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY CLAIM, DAMAGES OR
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OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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OTHER DEALINGS IN THE SOFTWARE.
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Except as contained in this notice, the name of the author shall
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not be used in advertising or otherwise to promote the sale, use or
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other dealings in this Software without prior written authorization
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from the author.
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*/
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#ifdef HAVE_DIX_CONFIG_H
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#include <dix-config.h>
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#endif
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#ifndef _GEEXT_H_
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#define _GEEXT_H_
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#include <X11/extensions/geproto.h>
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/**
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* This struct is used both in the window and by grabs to determine the event
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* mask for a client.
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* A window will have a linked list of these structs, with one entry per
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* client per device, null-terminated.
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* A grab has only one instance of this struct.
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*/
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typedef struct _GenericMaskRec {
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struct _GenericMaskRec* next;
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XID resource; /* id for the resource manager */
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DeviceIntPtr dev;
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Mask eventMask[MAXEXTENSIONS]; /* one mask per extension */
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} GenericMaskRec, *GenericMaskPtr;
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/* Struct to keep information about registered extensions
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*
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* evswap ... use to swap event fields for different byte ordered clients.
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* evfill ... use to fill various event fields from the given parameters.
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*/
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typedef struct _GEExtension {
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void (*evswap)(xGenericEvent* from, xGenericEvent* to);
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void (*evfill)(xGenericEvent* ev,
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DeviceIntPtr pDev, /* device */
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WindowPtr pWin, /* event window */
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GrabPtr pGrab /* current grab, may be NULL */
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);
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} GEExtension, *GEExtensionPtr;
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/* All registered extensions and their handling functions. */
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extern _X_EXPORT GEExtension GEExtensions[MAXEXTENSIONS];
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/* Typecast to generic event */
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#define GEV(ev) ((xGenericEvent*)(ev))
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/* Returns the extension offset from the event */
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#define GEEXT(ev) (GEV(ev)->extension)
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/* Return zero-based extension offset (offset - 128). Only for use in arrays */
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#define GEEXTIDX(ev) (GEEXT(ev) & 0x7F)
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/* True if mask is set for extension on window */
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#define GEMaskIsSet(pWin, extension, mask) \
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((pWin)->optional && \
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(pWin)->optional->geMasks && \
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((pWin)->optional->geMasks->eventMasks[(extension) & 0x7F] & (mask)))
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/* Returns first client */
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#define GECLIENT(pWin) \
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(((pWin)->optional) ? (pWin)->optional->geMasks->geClients : NULL)
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/* Returns the event_fill for the given event */
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#define GEEventFill(ev) \
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GEExtensions[GEEXTIDX(xE)].evfill
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#define GEIsType(ev, ext, ev_type) \
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((GEV(ev)->type == GenericEvent) && \
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GEEXT(ev) == (ext) && \
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GEV(ev)->evtype == (ev_type))
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/* Interface for other extensions */
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extern _X_EXPORT void GEWindowSetMask(ClientPtr pClient, DeviceIntPtr pDev,
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WindowPtr pWin, int extension, Mask mask);
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extern _X_EXPORT void GERegisterExtension(
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int extension,
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void (*ev_dispatch)(xGenericEvent* from, xGenericEvent* to),
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void (*ev_fill)(xGenericEvent* ev, DeviceIntPtr pDev,
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WindowPtr pWin, GrabPtr pGrab)
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);
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extern _X_EXPORT void GEInitEvent(xGenericEvent* ev, int extension);
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extern _X_EXPORT BOOL GEDeviceMaskIsSet(WindowPtr pWin, DeviceIntPtr pDev,
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int extension, Mask mask);
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extern _X_EXPORT void GEExtensionInit(void);
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#endif /* _GEEXT_H_ */
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