fraawlen/XCB-Xinput-test
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fraawlen 2023-03-27 21:35:13 -04:00
parent 0a54faa867
commit 0d431a4e62
2 changed files with 168 additions and 0 deletions
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makefile Normal file
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mtxev: test.c
cc -o test test.c -lxcb -lxcb-xinput

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test.c Normal file
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#include <stdio.h>
#include <stdint.h>
#include <stdlib.h>
#include <xcb/xcb.h>
#include <xcb/xinput.h>
/************************************************************************************************************/
/* _ ********************************************************************************************************/
/************************************************************************************************************/
static void _loop (void);
static void _init (void);
static void _reset (void);
static void _event (xcb_ge_generic_event_t *x_ev);
/************************************************************************************************************/
/************************************************************************************************************/
/************************************************************************************************************/
static xcb_connection_t *_x_con = NULL;
static xcb_screen_t *_x_scr = NULL;
static xcb_window_t _x_win = 0;
/************************************************************************************************************/
/************************************************************************************************************/
/************************************************************************************************************/
int
main(int argc, char **argv)
{
_init();
_loop();
_reset();
}
/************************************************************************************************************/
/* _ ********************************************************************************************************/
/************************************************************************************************************/
static void
_event(xcb_ge_generic_event_t *x_ev)
{
xcb_input_touch_begin_event_t *x_ev_b = (xcb_input_touch_begin_event_t*)x_ev;
xcb_input_touch_ownership_event_t *x_ev_o = (xcb_input_touch_ownership_event_t*)x_ev;
switch (x_ev->event_type) {
case XCB_INPUT_TOUCH_BEGIN:
if (x_ev_b->event == _x_win) {
printf("begin - %lu\n", x_ev_b->detail);
}
break;
case XCB_INPUT_TOUCH_END:
if (x_ev_b->event == _x_win) {
printf("end - %lu\n", x_ev_b->detail);
}
break;
case XCB_INPUT_TOUCH_UPDATE:
printf("update - %lu\n", x_ev_b->detail);
break;
case XCB_INPUT_TOUCH_OWNERSHIP:
if (x_ev_b->event == _x_win) {
printf("ownership - %lu\n", x_ev_o->touchid);
}
break;
}
}
/* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -*/
static void
_init(void)
{
/* xcb session */
_x_con = xcb_connect(NULL, NULL);
_x_scr = xcb_setup_roots_iterator(xcb_get_setup(_x_con)).data;
/* xcb window */
uint32_t mask_vals[2];
mask_vals[0] = _x_scr->white_pixel;
mask_vals[1] = XCB_EVENT_MASK_EXPOSURE;
_x_win = xcb_generate_id(_x_con);
xcb_create_window(
_x_con,
XCB_COPY_FROM_PARENT,
_x_win,
_x_scr->root,
0, 0,
400, 400,
0,
XCB_WINDOW_CLASS_INPUT_OUTPUT,
_x_scr->root_visual,
XCB_CW_BACK_PIXEL | XCB_CW_EVENT_MASK,
mask_vals);
xcb_map_window(_x_con, _x_win);
/* xinput extension */
/* https://lwn.net/Articles/475886/ */
/* https://github.com/freedesktop/xcb-proto/blob/master/src/xinput.xml */
/* thanks you random citizens */
/* https://searchcode.com/file/635605507/src/plugins/platforms/xcb/qxcbconnection_xi2.cpp/ */
/* https://stackoverflow.com/questions/39641675/how-to-register-events-using-libxcb-xinput */
struct {
xcb_input_event_mask_t head;
xcb_input_xi_event_mask_t mask;
} mask;
mask.head.deviceid = XCB_INPUT_DEVICE_ALL;
mask.head.mask_len = 1;
mask.mask =
XCB_INPUT_XI_EVENT_MASK_TOUCH_BEGIN |
XCB_INPUT_XI_EVENT_MASK_TOUCH_END |
XCB_INPUT_XI_EVENT_MASK_TOUCH_UPDATE |
XCB_INPUT_XI_EVENT_MASK_TOUCH_OWNERSHIP;
xcb_input_xi_select_events(_x_con, _x_win, 1, (xcb_input_event_mask_t*)(&mask));
/* end */
xcb_flush(_x_con);
}
/* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -*/
static void
_loop(void)
{
xcb_generic_event_t *x_ev;
while ((x_ev = xcb_wait_for_event(_x_con))) {
switch (x_ev->response_type & ~0x80) {
case XCB_EXPOSE:
break;
case XCB_GE_GENERIC:
_event((xcb_ge_generic_event_t*)x_ev);
break;
}
free(x_ev);
xcb_flush(_x_con);
}
}
/* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -*/
static void
_reset(void)
{
xcb_unmap_window(_x_con, _x_win);
xcb_destroy_window(_x_con, _x_win);
xcb_disconnect(_x_con);
}