53 lines
1.5 KiB
C
53 lines
1.5 KiB
C
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/*
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* Key chord input driver
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*
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* Copyright (C) 2008 Google, Inc.
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* Author: Mike Lockwood <lockwood@android.com>
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*
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* This software is licensed under the terms of the GNU General Public
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* License version 2, as published by the Free Software Foundation, and
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* may be copied, distributed, and modified under those terms.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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*/
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#ifndef __LINUX_KEYCHORD_H_
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#define __LINUX_KEYCHORD_H_
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#include <linux/input.h>
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#define KEYCHORD_VERSION 1
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/*
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* One or more input_keychord structs are written to /dev/keychord
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* at once to specify the list of keychords to monitor.
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* Reading /dev/keychord returns the id of a keychord when the
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* keychord combination is pressed. A keychord is signalled when
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* all of the keys in the keycode list are in the pressed state.
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* The order in which the keys are pressed does not matter.
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* The keychord will not be signalled if keys not in the keycode
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* list are pressed.
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* Keychords will not be signalled on key release events.
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*/
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struct input_keychord {
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/* should be KEYCHORD_VERSION */
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__u16 version;
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/*
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* client specified ID, returned from read()
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* when this keychord is pressed.
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*/
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__u16 id;
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/* number of keycodes in this keychord */
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__u16 count;
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/* variable length array of keycodes */
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__u16 keycodes[];
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};
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#endif /* __LINUX_KEYCHORD_H_ */
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