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/*
* XIint.h - Header definition and support file for the internal
* support routines used by the Xi library.
*/
#ifndef _XIINT_H_
#define _XIINT_H_
#include <X11/extensions/XI.h>
/* inputproto 2.0 still shipped with these defined in the proto headers */
#ifndef XInput_Initial_Release
/* Indices into the versions[] array (XExtInt.c). Used as a index to
* retrieve the minimum version of XI from _XiCheckExtInit */
#define Dont_Check 0
#define XInput_Initial_Release 1
#define XInput_Add_XDeviceBell 2
#define XInput_Add_XSetDeviceValuators 3
#define XInput_Add_XChangeDeviceControl 4
#define XInput_Add_DevicePresenceNotify 5
#define XInput_Add_DeviceProperties 6
#define XInput_2_0 7
#endif
#define XInput_2_1 8
#define XInput_2_2 9
extern XExtDisplayInfo *XInput_find_display(Display *);
extern int _XiCheckExtInit(Display *, int, XExtDisplayInfo *);
extern int _XiCheckVersion(XExtDisplayInfo *info, int version_index);
extern XExtensionVersion *_XiGetExtensionVersion(Display *, _Xconst char *, XExtDisplayInfo *);
extern XExtensionVersion* _XiGetExtensionVersionRequest(Display *dpy, _Xconst char *name, int xi_opcode);
extern Status _xiQueryVersion(Display *dpy, int*, int*, XExtDisplayInfo *);
extern Status _XiEventToWire(
register Display * /* dpy */,
register XEvent * /* re */,
register xEvent ** /* event */,
register int * /* count */
);
typedef struct _XInputData
{
XEvent data;
XExtensionVersion *vers;
} XInputData;
/**
* Returns the next valid memory block of the given size within the block
* previously allocated.
* Use letting pointers inside a struct point to bytes after the same
* struct, e.g. during protocol parsing etc.
*
* Caller is responsible for allocating enough memory.
*
* Example:
* void *ptr;
* struct foo {
* int num_a;
* int num_b;
* int *a;
* int *b;
* } bar;
*
* ptr = malloc(large_enough);
* bar = next_block(&ptr, sizeof(struct foo));
* bar->num_a = 10;
* bar->num_b = 20;
* bar->a = next_block(&ptr, bar->num_a);
* bar->b = next_block(&ptr, bar->num_b);
*/
static inline void*
next_block(void **ptr, int size) {
void *ret = *ptr;
if (!*ptr)
return NULL;
*(unsigned char**)ptr += size;
return ret;
}
#endif
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