libei/src/libei-scroll.c
Peter Hutterer bf88b34918 Split the ei_pointer interface up into its components
Split the ei_pointer protocol interface into ei_pointer,
ei_pointer_absolute, ei_scroll and ei_button.

This gets rid of the slightly awkward pointer vs pointer absolute
handling. Those were two different capabilities but tied to the same
interface.

Plus it paves the way for devices that are keyboards with scroll
buttons, etc.
2023-05-02 05:53:25 +00:00

87 lines
2.7 KiB
C

/* SPDX-License-Identifier: MIT */
/*
* Copyright © 2023 Red Hat, Inc.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN scroll WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*/
#include "config.h"
#include <errno.h>
#include <stdbool.h>
#include "util-bits.h"
#include "util-macros.h"
#include "util-mem.h"
#include "util-io.h"
#include "util-strings.h"
#include "util-version.h"
#include "libei-private.h"
#include "ei-proto.h"
static void
ei_scroll_destroy(struct ei_scroll *scroll)
{
struct ei *ei = ei_scroll_get_context(scroll);
ei_unregister_object(ei, &scroll->proto_object);
}
OBJECT_IMPLEMENT_REF(ei_scroll);
OBJECT_IMPLEMENT_UNREF_CLEANUP(ei_scroll);
static
OBJECT_IMPLEMENT_CREATE(ei_scroll);
static
OBJECT_IMPLEMENT_PARENT(ei_scroll, ei_device);
OBJECT_IMPLEMENT_GETTER_AS_REF(ei_scroll, proto_object, const struct brei_object*);
struct ei_device *
ei_scroll_get_device(struct ei_scroll *scroll)
{
return ei_scroll_parent(scroll);
}
struct ei*
ei_scroll_get_context(struct ei_scroll *scroll)
{
return ei_device_get_context(ei_scroll_get_device(scroll));
}
const struct ei_scroll_interface *
ei_scroll_get_interface(struct ei_scroll *scroll) {
struct ei_device *device = ei_scroll_get_device(scroll);
return ei_device_get_scroll_interface(device);
}
struct ei_scroll *
ei_scroll_new(struct ei_device *device, object_id_t id, uint32_t version)
{
struct ei_scroll *scroll = ei_scroll_create(&device->object);
struct ei *ei = ei_device_get_context(device);
scroll->proto_object.id = id;
scroll->proto_object.implementation = scroll;
scroll->proto_object.interface = &ei_scroll_proto_interface;
scroll->proto_object.version = version;
ei_register_object(ei, &scroll->proto_object);
return scroll; /* ref owned by caller */
}