Add scrollable options menu (#99)

* * Add new scrollable options list.

* * Add OptionList.cpp to the CMakeLists.txt

* * Add the new stuff by @jonkadelic to the new options menu.

source/client/gui/components/OptionList.hpp

@@ -0,0 +1,118 @@
+/********************************************************************
+	Minecraft: Pocket Edition - Decompilation Project
+	Copyright (C) 2023 iProgramInCpp
+
+	The following code is licensed under the BSD 1 clause license.
+	SPDX-License-Identifier: BSD-1-Clause
+ ********************************************************************/
+
+#pragma once
+
+#include "ScrolledSelectionList.hpp"
+
+class Options;
+class OptionList;
+
+// Abstract class - actual options will inherit from it
+class OptionItem
+{
+public:
+	OptionItem() {}
+	virtual ~OptionItem() {}
+	virtual void onClick(OptionList*, int mouseX, int mouseY) = 0;
+	virtual void render(OptionList*, int x, int y) = 0;
+	virtual bool maySelect() { return true; }
+	virtual void setDisabled(bool b) { };
+};
+
+class BooleanOptionItem : public OptionItem
+{
+public:
+	BooleanOptionItem(bool* pValue, const std::string& text);
+	void onClick(OptionList*, int mouseX, int mouseY) override;
+	void render(OptionList*, int x, int y) override;
+	void setDisabled(bool b) override { m_bDisabled = b; }
+
+	virtual void toggleState(OptionList*);
+
+protected:
+	friend class AORenderOptionItem;
+
+	std::string m_text;
+	bool* m_pValue; // Reference to the value to be modified by this item
+	bool m_bDisabled;
+};
+
+// An option item that controls the view distance.
+class DistanceOptionItem : public OptionItem
+{
+	enum
+	{
+		RD_EXTREME,
+		RD_FAR,
+		RD_NORMAL,
+		RD_SHORT,
+		RD_COUNT,
+	};
+
+public:
+	DistanceOptionItem(int* pValue, const std::string& text);
+	void onClick(OptionList*, int mouseX, int mouseY) override;
+	void render(OptionList*, int x, int y) override;
+
+protected:
+	std::string m_text;
+	int* m_pValue; // Reference to the value to be modified by this item
+};
+
+class RenderOptionItem : public BooleanOptionItem
+{
+public:
+	RenderOptionItem(bool* pValue, const std::string& text);
+	void toggleState(OptionList*) override;
+};
+
+class AORenderOptionItem : public RenderOptionItem
+{
+public:
+	AORenderOptionItem(bool* pValue, const std::string& text);
+	void toggleState(OptionList*) override;
+};
+
+class HeaderOptionItem : public OptionItem
+{
+public:
+	HeaderOptionItem(const std::string& text);
+	void render(OptionList*, int x, int y) override;
+	bool maySelect() override { return false; }
+	void onClick(OptionList*, int mouseX, int mouseY) {}
+
+private:
+	std::string m_text;
+};
+
+class OptionList : public ScrolledSelectionList
+{
+public:
+	OptionList(Minecraft*, int, int, int, int);
+	~OptionList();
+
+	// Inherited from ScrolledSelectionList
+	int getNumberOfItems() override;
+	void selectItem(int, bool) override;
+	bool isSelectedItem(int) override;
+	void renderItem(int, int, int, int, Tesselator&) override;
+	void renderBackground(float) override;
+	void renderHoleBackground(float, float, int, int) override;
+	void onClickItem(int index, int mouseX, int mouseY) override;
+	void renderScrollBackground() override;
+
+	void clear();
+	void initDefaultMenu();
+	void drawOnOffSwitch(int x, int y, bool state, bool disabled = false);
+
+private:
+	int m_selectedItem;
+	std::vector<OptionItem*> m_items;
+};
+