| 1 | /*
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| 2 |
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| 3 | Copyright 2007 Peter Hutterer <[email protected]>
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| 4 |
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| 5 | Permission to use, copy, modify, distribute, and sell this software and its
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| 6 | documentation for any purpose is hereby granted without fee, provided that
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| 7 | the above copyright notice appear in all copies and that both that
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| 8 | copyright notice and this permission notice appear in supporting
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| 9 | documentation.
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| 10 |
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| 11 | The above copyright notice and this permission notice shall be included
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| 12 | in all copies or substantial portions of the Software.
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| 13 |
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| 14 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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| 15 | OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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| 16 | MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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| 17 | IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY CLAIM, DAMAGES OR
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| 18 | OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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| 19 | ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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| 20 | OTHER DEALINGS IN THE SOFTWARE.
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| 21 |
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| 22 | Except as contained in this notice, the name of the author shall
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| 23 | not be used in advertising or otherwise to promote the sale, use or
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| 24 | other dealings in this Software without prior written authorization
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| 25 | from the author.
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| 26 |
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| 27 | */
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| 28 |
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| 29 | #ifdef HAVE_DIX_CONFIG_H
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| 30 | #include <dix-config.h>
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| 31 | #endif
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| 32 |
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| 33 | #ifndef _GEEXT_H_
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| 34 | #define _GEEXT_H_
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| 35 | #include <X11/extensions/geproto.h>
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| 36 |
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| 37 |
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| 38 | /**
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| 39 | * This struct is used both in the window and by grabs to determine the event
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| 40 | * mask for a client.
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| 41 | * A window will have a linked list of these structs, with one entry per
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| 42 | * client per device, null-terminated.
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| 43 | * A grab has only one instance of this struct.
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| 44 | */
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| 45 | typedef struct _GenericMaskRec {
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| 46 | struct _GenericMaskRec* next;
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| 47 | XID resource; /* id for the resource manager */
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| 48 | DeviceIntPtr dev;
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| 49 | Mask eventMask[MAXEXTENSIONS]; /* one mask per extension */
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| 50 | } GenericMaskRec, *GenericMaskPtr;
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| 51 |
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| 52 |
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| 53 | /* Struct to keep information about registered extensions
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| 54 | *
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| 55 | * evswap ... use to swap event fields for different byte ordered clients.
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| 56 | * evfill ... use to fill various event fields from the given parameters.
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| 57 | */
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| 58 | typedef struct _GEExtension {
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| 59 | void (*evswap)(xGenericEvent* from, xGenericEvent* to);
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| 60 | void (*evfill)(xGenericEvent* ev,
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| 61 | DeviceIntPtr pDev, /* device */
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| 62 | WindowPtr pWin, /* event window */
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| 63 | GrabPtr pGrab /* current grab, may be NULL */
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| 64 | );
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| 65 | } GEExtension, *GEExtensionPtr;
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| 66 |
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| 67 |
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| 68 | /* All registered extensions and their handling functions. */
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| 69 | extern GEExtension GEExtensions[MAXEXTENSIONS];
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| 70 |
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| 71 | /* Returns the extension offset from the event */
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| 72 | #define GEEXT(ev) (((xGenericEvent*)(ev))->extension)
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| 73 |
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| 74 | #define GEEXTIDX(ev) (GEEXT(ev) & 0x7F)
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| 75 | /* Typecast to generic event */
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| 76 | #define GEV(ev) ((xGenericEvent*)(ev))
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| 77 | /* True if mask is set for extension on window */
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| 78 | #define GEMaskIsSet(pWin, extension, mask) \
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| 79 | ((pWin)->optional && \
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| 80 | (pWin)->optional->geMasks && \
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| 81 | ((pWin)->optional->geMasks->eventMasks[(extension) & 0x7F] & (mask)))
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| 82 |
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| 83 | /* Returns first client */
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| 84 | #define GECLIENT(pWin) \
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| 85 | (((pWin)->optional) ? (pWin)->optional->geMasks->geClients : NULL)
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| 86 |
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| 87 | /* Returns the event_fill for the given event */
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| 88 | #define GEEventFill(ev) \
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| 89 | GEExtensions[GEEXTIDX(xE)].evfill
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| 90 |
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| 91 | #define GEIsType(ev, ext, ev_type) \
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| 92 | ((ev->u.u.type == GenericEvent) && \
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| 93 | ((xGenericEvent*)(ev))->extension == ext && \
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| 94 | ((xGenericEvent*)(ev))->evtype == ev_type)
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| 95 |
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| 96 |
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| 97 | /* Interface for other extensions */
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| 98 | void GEWindowSetMask(ClientPtr pClient, DeviceIntPtr pDev,
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| 99 | WindowPtr pWin, int extension, Mask mask);
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| 100 |
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| 101 | void GERegisterExtension(
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| 102 | int extension,
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| 103 | void (*ev_dispatch)(xGenericEvent* from, xGenericEvent* to),
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| 104 | void (*ev_fill)(xGenericEvent* ev, DeviceIntPtr pDev,
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| 105 | WindowPtr pWin, GrabPtr pGrab)
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| 106 | );
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| 107 |
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| 108 | void GEInitEvent(xGenericEvent* ev, int extension);
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| 109 | BOOL GEDeviceMaskIsSet(WindowPtr pWin, DeviceIntPtr pDev,
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| 110 | int extension, Mask mask);
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| 111 |
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| 112 | void GEExtensionInit(void);
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| 113 |
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| 114 | #endif /* _GEEXT_H_ */
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