InputCommon: Decouple ButtonManager and Touchscreen from Android

Changes were also made for codestyle compliance.

Source/Core/InputCommon/ControllerInterface/Touch/Touchscreen.h

@@ -0,0 +1,65 @@
+// Copyright 2008 Dolphin Emulator Project
+// Licensed under GPLv2+
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include "InputCommon/ControllerInterface/ControllerInterface.h"
+#include "InputCommon/ControllerInterface/Touch/ButtonManager.h"
+
+namespace ciface::Touch
+{
+class Touchscreen : public Core::Device
+{
+private:
+  class Button : public Input
+  {
+  public:
+    std::string GetName() const;
+    Button(int pad_id, ButtonManager::ButtonType index) : m_pad_id(pad_id), m_index(index) {}
+    ControlState GetState() const;
+
+  private:
+    const int m_pad_id;
+    const ButtonManager::ButtonType m_index;
+  };
+  class Axis : public Input
+  {
+  public:
+    std::string GetName() const;
+    bool IsDetectable() override { return false; }
+    Axis(int pad_id, ButtonManager::ButtonType index, float neg = 1.0f)
+        : m_pad_id(pad_id), m_index(index), m_neg(neg)
+    {
+    }
+    ControlState GetState() const;
+
+  private:
+    const int m_pad_id;
+    const ButtonManager::ButtonType m_index;
+    const float m_neg;
+  };
+  class Motor : public Core::Device::Output
+  {
+  public:
+    Motor(int pad_id, ButtonManager::ButtonType index) : m_pad_id(pad_id), m_index(index) {}
+    ~Motor();
+    std::string GetName() const override;
+    void SetState(ControlState state) override;
+
+  private:
+    const int m_pad_id;
+    const ButtonManager::ButtonType m_index;
+    static void Rumble(int pad_id, double state);
+  };
+
+public:
+  Touchscreen(int pad_id, bool accelerometer_enabled, bool gyroscope_enabled);
+  ~Touchscreen() {}
+  std::string GetName() const;
+  std::string GetSource() const;
+
+private:
+  const int m_pad_id;
+};
+}  // namespace ciface::Touch