60 lines
1.6 KiB
C++
60 lines
1.6 KiB
C++
#pragma once
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#include "IRQHandler.h"
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#include "KeyCode.h"
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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/Devices/CharacterDevice.h>
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class KeyboardClient;
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class KeyboardDevice final : public IRQHandler
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, public CharacterDevice {
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AK_MAKE_ETERNAL
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public:
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using Event = KeyEvent;
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static KeyboardDevice& the();
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virtual ~KeyboardDevice() override;
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KeyboardDevice();
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void set_client(KeyboardClient* client) { m_client = client; }
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void set_maps(const char* n_map, const char* n_shift_map, const char* n_alt_map, const char* n_altgr_map);
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// ^CharacterDevice
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virtual ssize_t read(FileDescription&, u8* buffer, ssize_t) override;
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virtual bool can_read(const FileDescription&) const override;
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virtual ssize_t write(FileDescription&, const u8* buffer, ssize_t) override;
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virtual bool can_write(const FileDescription&) const override { return true; }
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private:
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// ^IRQHandler
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virtual void handle_irq() override;
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// ^CharacterDevice
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virtual const char* class_name() const override { return "KeyboardDevice"; }
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void key_state_changed(u8 raw, bool pressed);
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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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KeyboardClient* m_client { nullptr };
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CircularQueue<Event, 16> m_queue;
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u8 m_modifiers { 0 };
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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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};
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class KeyboardClient {
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public:
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virtual ~KeyboardClient();
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virtual void on_key_pressed(KeyboardDevice::Event) = 0;
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};
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