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https://github.com/LadybirdBrowser/ladybird.git
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272df54a3e
Because it was 'static const' and also shared with userland programs, the default keymap was defined in multiple places. This commit should save several kilobytes! :^)
117 lines
4 KiB
C++
117 lines
4 KiB
C++
/*
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* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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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/I8042Controller.h>
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#include <Kernel/Interrupts/IRQHandler.h>
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#include <Kernel/Random.h>
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#include <LibKeyboard/CharacterMap.h>
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namespace Kernel {
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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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, public I8042Device {
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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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bool initialize();
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void set_client(KeyboardClient* client) { m_client = client; }
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void set_maps(const Keyboard::CharacterMapData& character_map, const String& character_map_name);
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const Keyboard::CharacterMapData& character_maps() const { return m_character_map.character_map_data(); }
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const String keymap_name() { return m_character_map.character_map_name(); }
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// ^CharacterDevice
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virtual KResultOr<size_t> read(FileDescription&, size_t, UserOrKernelBuffer&, size_t) override;
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virtual bool can_read(const FileDescription&, size_t) const override;
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virtual KResultOr<size_t> write(FileDescription&, size_t, const UserOrKernelBuffer&, size_t) override;
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virtual bool can_write(const FileDescription&, size_t) const override { return true; }
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virtual const char* purpose() const override { return class_name(); }
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// ^I8042Device
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virtual void irq_handle_byte_read(u8 byte) override;
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virtual void enable_interrupts() override
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{
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enable_irq();
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}
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// ^Device
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virtual mode_t required_mode() const override { return 0440; }
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virtual String device_name() const override { return "keyboard"; }
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private:
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// ^IRQHandler
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virtual void handle_irq(const RegisterState&) 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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I8042Controller& m_controller;
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KeyboardClient* m_client { nullptr };
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mutable SpinLock<u8> m_queue_lock;
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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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EntropySource m_entropy_source;
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Keyboard::CharacterMap m_character_map;
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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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}
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