input_common: Rewrite keyboard

src/input_common/drivers/keyboard.h

@@ -0,0 +1,44 @@
+// Copyright 2021 yuzu Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included
+
+#pragma once
+
+#include "input_common/input_engine.h"
+
+namespace InputCommon {
+
+/**
+ * A button device factory representing a keyboard. It receives keyboard events and forward them
+ * to all button devices it created.
+ */
+class Keyboard final : public InputCommon::InputEngine {
+public:
+    explicit Keyboard(const std::string& input_engine_);
+
+    /**
+     * Sets the status of all buttons bound with the key to pressed
+     * @param key_code the code of the key to press
+     */
+    void PressKey(int key_code);
+
+    /**
+     * Sets the status of all buttons bound with the key to released
+     * @param key_code the code of the key to release
+     */
+    void ReleaseKey(int key_code);
+
+    void ReleaseAllKeys();
+
+    /// Used for automapping features
+    std::vector<Common::ParamPackage> GetInputDevices() const override;
+
+private:
+    const PadIdentifier identifier = {
+        .guid = Common::UUID{""},
+        .port = 0,
+        .pad = 0,
+    };
+};
+
+} // namespace InputCommon