genode/repos/os/include/genode_c_api/event.h

107 lines
2.2 KiB
C
Raw Normal View History

/*
* \brief C interface to Genode's event session
* \author Norman Feske
* \author Christian Helmuth
* \date 2021-09-29
*/
/*
* Copyright (C) 2021 Genode Labs GmbH
*
* This file is part of the Genode OS framework, which is distributed
* under the terms of the GNU Affero General Public License version 3.
*/
#ifndef _INCLUDE__GENODE_C_API__EVENT_H_
#define _INCLUDE__GENODE_C_API__EVENT_H_
#include <genode_c_api/base.h>
#ifdef __cplusplus
extern "C" {
#endif
/**
* Initialize event-session handling
*/
void genode_event_init(struct genode_env *,
struct genode_allocator *);
struct genode_event; /* definition is private to the implementation */
/****************************
** Event-session lifetime **
****************************/
struct genode_event_args
{
char const *label;
};
struct genode_event *genode_event_create(struct genode_event_args const *);
void genode_event_destroy(struct genode_event *);
/**********************
** Event submission **
**********************/
struct genode_event_touch_args
{
unsigned finger;
unsigned xpos;
unsigned ypos;
unsigned width;
};
struct genode_event_submit;
/**
* Interface called by 'genode_event_generator_t' to submit events
*
* Note, keycode values must conform to os/include/input/keycodes.h.
*/
struct genode_event_submit
{
void (*press) (struct genode_event_submit *, unsigned keycode);
void (*release) (struct genode_event_submit *, unsigned keycode);
void (*rel_motion) (struct genode_event_submit *, int x, int y);
void (*touch) (struct genode_event_submit *,
struct genode_event_touch_args const *);
void (*touch_release) (struct genode_event_submit *, unsigned finger);
void (*wheel) (struct genode_event_submit *, int x, int y);
};
/**
* Context private to 'genode_event_generator_t'
*/
struct genode_event_generator_ctx;
typedef void (*genode_event_generator_t)
(struct genode_event_generator_ctx *, struct genode_event_submit *);
/**
* Generate batch of events
*/
void genode_event_generate(struct genode_event *,
genode_event_generator_t,
struct genode_event_generator_ctx *);
#ifdef __cplusplus
}
#endif
#endif /* _INCLUDE__GENODE_C_API__EVENT_H_ */