Qt: Implement GC TAS input window

Source/Core/DolphinQt2/TAS/StickWidget.h

@@ -0,0 +1,42 @@
+// Copyright 2018 Dolphin Emulator Project
+// Licensed under GPLv2+
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include <QDialog>
+
+#include "Common/CommonTypes.h"
+
+class QBoxLayout;
+class QCheckBox;
+class QGroupBox;
+class QSpinBox;
+struct GCPadStatus;
+
+class StickWidget : public QWidget
+{
+  Q_OBJECT
+public:
+  explicit StickWidget(QWidget* parent, u16 width, u16 height);
+
+signals:
+  void ChangedX(u16 x);
+  void ChangedY(u16 y);
+
+public slots:
+  void SetX(u16 x);
+  void SetY(u16 y);
+
+protected:
+  void paintEvent(QPaintEvent* event) override;
+  void mousePressEvent(QMouseEvent* event) override;
+  void mouseMoveEvent(QMouseEvent* event) override;
+  void handleMouseEvent(QMouseEvent* event);
+
+private:
+  u16 m_max_x;
+  u16 m_max_y;
+  u16 m_x;
+  u16 m_y;
+};