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a09e091a JB |
1 | /* |
2 | ||
3 | Copyright 2007 Peter Hutterer <peter@cs.unisa.edu.au> | |
4 | ||
5 | Permission to use, copy, modify, distribute, and sell this software and its | |
6 | documentation for any purpose is hereby granted without fee, provided that | |
7 | the above copyright notice appear in all copies and that both that | |
8 | copyright notice and this permission notice appear in supporting | |
9 | documentation. | |
10 | ||
11 | The above copyright notice and this permission notice shall be included | |
12 | in all copies or substantial portions of the Software. | |
13 | ||
14 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS | |
15 | OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF | |
16 | MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. | |
17 | IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY CLAIM, DAMAGES OR | |
18 | OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, | |
19 | ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR | |
20 | OTHER DEALINGS IN THE SOFTWARE. | |
21 | ||
22 | Except as contained in this notice, the name of the author shall | |
23 | not be used in advertising or otherwise to promote the sale, use or | |
24 | other dealings in this Software without prior written authorization | |
25 | from the author. | |
26 | ||
27 | */ | |
28 | ||
29 | #ifdef HAVE_DIX_CONFIG_H | |
30 | #include <dix-config.h> | |
31 | #endif | |
32 | ||
33 | #ifndef _GEEXT_H_ | |
34 | #define _GEEXT_H_ | |
35 | #include <X11/extensions/geproto.h> | |
36 | ||
37 | /** Struct to keep information about registered extensions */ | |
38 | typedef struct _GEExtension { | |
39 | /** Event swapping routine */ | |
40 | void (*evswap) (xGenericEvent *from, xGenericEvent *to); | |
41 | } GEExtension, *GEExtensionPtr; | |
42 | ||
43 | /* All registered extensions and their handling functions. */ | |
44 | extern _X_EXPORT GEExtension GEExtensions[MAXEXTENSIONS]; | |
45 | ||
46 | /* Typecast to generic event */ | |
47 | #define GEV(ev) ((xGenericEvent*)(ev)) | |
48 | /* Returns the extension offset from the event */ | |
49 | #define GEEXT(ev) (GEV(ev)->extension) | |
50 | ||
51 | /* Return zero-based extension offset (offset - 128). Only for use in arrays */ | |
52 | #define GEEXTIDX(ev) (GEEXT(ev) & 0x7F) | |
53 | /* True if mask is set for extension on window */ | |
54 | #define GEMaskIsSet(pWin, extension, mask) \ | |
55 | ((pWin)->optional && \ | |
56 | (pWin)->optional->geMasks && \ | |
57 | ((pWin)->optional->geMasks->eventMasks[(extension) & 0x7F] & (mask))) | |
58 | ||
59 | /* Returns first client */ | |
60 | #define GECLIENT(pWin) \ | |
61 | (((pWin)->optional) ? (pWin)->optional->geMasks->geClients : NULL) | |
62 | ||
63 | /* Returns the event_fill for the given event */ | |
64 | #define GEEventFill(ev) \ | |
65 | GEExtensions[GEEXTIDX(ev)].evfill | |
66 | ||
67 | #define GEIsType(ev, ext, ev_type) \ | |
68 | ((GEV(ev)->type == GenericEvent) && \ | |
69 | GEEXT(ev) == (ext) && \ | |
70 | GEV(ev)->evtype == (ev_type)) | |
71 | ||
72 | /* Interface for other extensions */ | |
73 | extern _X_EXPORT void GERegisterExtension(int extension, | |
74 | void (*ev_dispatch) (xGenericEvent | |
75 | *from, | |
76 | xGenericEvent | |
77 | *to)); | |
78 | ||
79 | extern _X_EXPORT void GEInitEvent(xGenericEvent *ev, int extension); | |
80 | ||
81 | #endif /* _GEEXT_H_ */ |