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https://github.com/RGBCube/serenity
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98d666eab3
We currently support the left super key. This poses an issue on keyboards that only have a right super key, such as my Steelseries 6G. The implementation mirrors the left/right shift key logic and effectively considers the right super key identical to the left one.
66 lines
2 KiB
C++
66 lines
2 KiB
C++
/*
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* Copyright (c) 2021, Liav A. <liavalb@hotmail.co.il>
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* Copyright (c) 2021, Edwin Hoksberg <mail@edwinhoksberg.nl>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#pragma once
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#include <AK/CircularQueue.h>
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#include <AK/DoublyLinkedList.h>
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#include <AK/Types.h>
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#include <Kernel/API/KeyCode.h>
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#include <Kernel/Devices/CharacterDevice.h>
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#include <Kernel/Devices/HID/HIDDevice.h>
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#include <Kernel/Interrupts/IRQHandler.h>
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#include <Kernel/Random.h>
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namespace Kernel {
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class KeyboardDevice : public HIDDevice {
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public:
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using Event = KeyEvent;
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virtual ~KeyboardDevice() override;
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// ^CharacterDevice
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virtual ErrorOr<size_t> read(OpenFileDescription&, u64, UserOrKernelBuffer&, size_t) override;
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virtual bool can_read(const OpenFileDescription&, u64) const override;
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virtual ErrorOr<size_t> write(OpenFileDescription&, u64, const UserOrKernelBuffer&, size_t) override { return EINVAL; }
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virtual bool can_write(const OpenFileDescription&, u64) const override { return true; }
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// ^HIDDevice
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virtual Type instrument_type() const override { return Type::Keyboard; }
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// ^File
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virtual ErrorOr<void> ioctl(OpenFileDescription&, unsigned request, Userspace<void*> arg) override;
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void update_modifier(u8 modifier, bool state)
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{
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if (state)
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m_modifiers |= modifier;
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else
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m_modifiers &= ~modifier;
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}
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protected:
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KeyboardDevice();
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mutable Spinlock m_queue_lock;
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CircularQueue<Event, 16> m_queue;
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// ^CharacterDevice
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virtual StringView class_name() const override { return "KeyboardDevice"sv; }
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u8 m_modifiers { 0 };
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bool m_caps_lock_to_ctrl_pressed { false };
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bool m_caps_lock_on { false };
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bool m_num_lock_on { false };
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bool m_has_e0_prefix { false };
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bool m_left_shift_pressed { false };
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bool m_right_shift_pressed { false };
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bool m_left_super_pressed { false };
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bool m_right_super_pressed { false };
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void key_state_changed(u8 raw, bool pressed);
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};
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}
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