781ab8407b
Since C++17, the introduction of deduction guides for locking facilities means that we no longer need to hardcode the mutex type into the locks themselves, making it easier to switch mutex types, should it ever be necessary in the future.
94 lines
2.4 KiB
C++
94 lines
2.4 KiB
C++
// Copyright 2017 Citra Emulator Project
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// Licensed under GPLv2 or any later version
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// Refer to the license.txt file included.
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#include <atomic>
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#include <list>
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#include <mutex>
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#include <utility>
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#include "input_common/keyboard.h"
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namespace InputCommon {
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class KeyButton final : public Input::ButtonDevice {
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public:
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explicit KeyButton(std::shared_ptr<KeyButtonList> key_button_list_)
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: key_button_list(std::move(key_button_list_)) {}
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~KeyButton() override;
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bool GetStatus() const override {
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return status.load();
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}
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friend class KeyButtonList;
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private:
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std::shared_ptr<KeyButtonList> key_button_list;
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std::atomic<bool> status{false};
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};
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struct KeyButtonPair {
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int key_code;
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KeyButton* key_button;
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};
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class KeyButtonList {
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public:
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void AddKeyButton(int key_code, KeyButton* key_button) {
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std::lock_guard guard{mutex};
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list.push_back(KeyButtonPair{key_code, key_button});
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}
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void RemoveKeyButton(const KeyButton* key_button) {
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std::lock_guard guard{mutex};
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list.remove_if(
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[key_button](const KeyButtonPair& pair) { return pair.key_button == key_button; });
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}
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void ChangeKeyStatus(int key_code, bool pressed) {
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std::lock_guard guard{mutex};
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for (const KeyButtonPair& pair : list) {
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if (pair.key_code == key_code)
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pair.key_button->status.store(pressed);
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}
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}
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void ChangeAllKeyStatus(bool pressed) {
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std::lock_guard guard{mutex};
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for (const KeyButtonPair& pair : list) {
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pair.key_button->status.store(pressed);
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}
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}
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private:
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std::mutex mutex;
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std::list<KeyButtonPair> list;
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};
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Keyboard::Keyboard() : key_button_list{std::make_shared<KeyButtonList>()} {}
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KeyButton::~KeyButton() {
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key_button_list->RemoveKeyButton(this);
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}
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std::unique_ptr<Input::ButtonDevice> Keyboard::Create(const Common::ParamPackage& params) {
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int key_code = params.Get("code", 0);
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std::unique_ptr<KeyButton> button = std::make_unique<KeyButton>(key_button_list);
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key_button_list->AddKeyButton(key_code, button.get());
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return std::move(button);
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}
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void Keyboard::PressKey(int key_code) {
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key_button_list->ChangeKeyStatus(key_code, true);
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}
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void Keyboard::ReleaseKey(int key_code) {
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key_button_list->ChangeKeyStatus(key_code, false);
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}
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void Keyboard::ReleaseAllKeys() {
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key_button_list->ChangeAllKeyStatus(false);
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}
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} // namespace InputCommon
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