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https://gitlab.freedesktop.org/libinput/libei.git
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a902d5dbd8
Previously we had ei_seat.capabilities and ei_device.capabilities,
both referring to the same enum. The seat caps were used to bind,
the device caps were used to announce capabilities.
The device caps were already mostly superfluous as the information
they carried was implicitly available by the set of interfaces
the device announced - if the device has a keyboard interface
it must also have the keyboard capability.
So let's drop the separate enum and make the capabilities
the set of supported interfaces. In the device we can drop the
event directly and just send the interface list. In the seat
we have a capability event that sends each *possible* interface
with a custom-assigned mask. The client can then use that mask
to bind to the capability as before.
For example:
<- ei_seat.capability(0x1, "ei_pointer")
<- ei_seat.capability(0x4, "ei_keyboard")
<- ei_seat.capability(0x8, "ei_touchscreen")
<- ei_seat.done()
-> ei_seat.bind(0x4 | 0x8) # bind to keyboard and touchscreen
<- ei_seat.device()
-> ei_device.interface("ei_keyboard")
-> ei_device.interface("ei_touchscreen")
<- ei_device.done()
In the generated bindings we simply use the interface index
to generate the masks, but the protocol at least states that
the mask may not be constant.
Because the button/scroll interfaces are not exposed by the C API, some
of the handling is a bit awkward since we need to use both depending
whether we have pointer/pointer_absolute selected.
Fixes #28
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
73 lines
2.2 KiB
C
73 lines
2.2 KiB
C
/* SPDX-License-Identifier: MIT */
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/*
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* Copyright © 2020 Red Hat, Inc.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*/
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#pragma once
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#include "util-object.h"
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#include "util-list.h"
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#include "brei-shared.h"
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#include "ei-proto.h"
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struct ei;
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enum ei_seat_state {
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EI_SEAT_STATE_NEW,
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EI_SEAT_STATE_DONE,
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EI_SEAT_STATE_REMOVED,
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};
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struct ei_seat {
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struct object object;
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void *user_data;
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struct brei_object proto_object;
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struct list link;
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enum ei_seat_state state;
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struct list devices;
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struct list devices_removed; /* removed from seat but client still has a ref */
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struct {
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/* Maps the interface as index to the capability bitmask on the protocol */
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uint64_t map[EI_INTERFACE_COUNT];
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/* A bitmask of the bitmask the client bound last */
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uint64_t bound;
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} capabilities;
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char *name;
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};
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OBJECT_DECLARE_GETTER(ei_seat, id, object_id_t);
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OBJECT_DECLARE_GETTER(ei_seat, proto_object, const struct brei_object *);
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OBJECT_DECLARE_GETTER(ei_seat, interface, const struct ei_seat_interface *);
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struct ei_seat *
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ei_seat_new(struct ei *ei, object_id_t id, uint32_t version);
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void
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ei_seat_remove(struct ei_seat *seat);
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void
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ei_seat_drop(struct ei_seat *seat);
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