mirror of
https://github.com/genodelabs/genode.git
synced 2024-12-28 01:28:53 +00:00
32c283d26f
This patch introduces a C API to be used by input drivers to generate Genode events. The initial version is limited to multitouch events only. Fixes #4273
97 lines
1.9 KiB
C
97 lines
1.9 KiB
C
/*
|
|
* \brief C interface to Genode's event session
|
|
* \author Norman Feske
|
|
* \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
|
|
*/
|
|
struct genode_event_submit
|
|
{
|
|
void (*touch) (struct genode_event_submit *,
|
|
struct genode_event_touch_args const *);
|
|
|
|
void (*touch_release) (struct genode_event_submit *, unsigned finger);
|
|
};
|
|
|
|
|
|
/**
|
|
* 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_ */
|