Magic_Game/Easy2D/2d/Node.h

// Copyright (c) 2016-2018 Easy2D - Nomango
// 
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
// 
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
// 
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.

#pragma once
#include "include-forwards.h"
#include "Transform.hpp"
#include "ActionManager.h"
#include "../base/TimerManager.h"
#include "../base/EventDispatcher.h"

namespace easy2d
{
	class Application;

	// <20>ڵ<EFBFBD>
	class E2D_API Node
		: public virtual Object
		, public TimerManager
		, public ActionManager
		, public EventDispatcher
		, public IntrusiveListItem<NodePtr>
	{
		friend class Application;
		friend class Transition;
		friend class IntrusiveList<NodePtr>;

		using Children = IntrusiveList<NodePtr>;
		using UpdateCallback = std::function<void(Duration)>;

	public:
		Node();

		// <20><><EFBFBD>½ڵ<C2BD>
		virtual void OnUpdate(Duration dt) { E2D_NOT_USED(dt); }

		// <20><>Ⱦ<EFBFBD>ڵ<EFBFBD>
		virtual void OnRender() {}

		// <20><>ȡ<EFBFBD><C8A1>ʾ״̬
		bool IsVisible()				const	{ return visible_; }

		// <20><>ȡ<EFBFBD><C8A1><EFBFBD>Ƶ<EFBFBD> Hash ֵ
		size_t GetHashName()			const	{ return hash_name_; }

		// <20><>ȡ Z <20><>˳<EFBFBD><CBB3>
		int GetZOrder()					const	{ return z_order_; }

		// <20><>ȡ<EFBFBD><C8A1><EFBFBD><EFBFBD>
		Point const& GetPosition()		const	{ return transform_.position; }

		// <20><>ȡ x <20><><EFBFBD><EFBFBD>
		float GetPositionX()			const	{ return transform_.position.x; }

		// <20><>ȡ y <20><><EFBFBD><EFBFBD>
		float GetPositionY()			const	{ return transform_.position.y; }

		// <20><>ȡ<EFBFBD><C8A1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ű<EFBFBD><C5B1><EFBFBD>
		float GetScaleX()				const	{ return transform_.scale.x; }

		// <20><>ȡ<EFBFBD><C8A1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ű<EFBFBD><C5B1><EFBFBD>
		float GetScaleY()				const	{ return transform_.scale.y; }

		// <20><>ȡ<EFBFBD><C8A1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>нǶ<D0BD>
		float GetSkewX()				const	{ return transform_.skew.x; }

		// <20><>ȡ<EFBFBD><C8A1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>нǶ<D0BD>
		float GetSkewY()				const	{ return transform_.skew.y; }

		// <20><>ȡ<EFBFBD><C8A1>ת<EFBFBD>Ƕ<EFBFBD>
		float GetRotation()				const	{ return transform_.rotation; }

		// <20><>ȡ<EFBFBD><C8A1><EFBFBD><EFBFBD>
		float GetWidth()				const	{ return size_.x; }

		// <20><>ȡ<EFBFBD>߶<EFBFBD>
		float GetHeight()				const	{ return size_.y; }

		// <20><>ȡ<EFBFBD><C8A1>С
		Size const& GetSize()			const	{ return size_; }

		// <20><>ȡ<EFBFBD><C8A1><EFBFBD>ź<EFBFBD><C5BA>Ŀ<EFBFBD><C4BF><EFBFBD>
		float GetScaledWidth()			const	{ return size_.x * transform_.scale.x; }

		// <20><>ȡ<EFBFBD><C8A1><EFBFBD>ź<EFBFBD><C5BA>ĸ߶<C4B8>
		float GetScaledHeight()			const	{ return size_.y * transform_.scale.y; }

		// <20><>ȡ<EFBFBD><C8A1><EFBFBD>ź<EFBFBD><C5BA>Ĵ<EFBFBD>С
		Size GetScaledSize()			const	{ return Size{ GetScaledWidth(), GetScaledHeight() }; }

		// <20><>ȡ x <20><><EFBFBD><EFBFBD>ê<EFBFBD><C3AA>
		float GetAnchorX()				const	{ return anchor_.x; }

		// <20><>ȡ y <20><><EFBFBD><EFBFBD>ê<EFBFBD><C3AA>
		float GetAnchorY()				const	{ return anchor_.y; }

		// <20><>ȡ͸<C8A1><CDB8><EFBFBD><EFBFBD>
		float GetOpacity()				const	{ return opacity_; }

		// <20><>ȡ<EFBFBD>任
		Transform const& GetTransform()	const	{ return transform_; }

		// <20><>ȡ<EFBFBD>߿<EFBFBD>
		Rect GetBounds() const;

		// <20><>ȡ<EFBFBD><C8A1><EFBFBD>а<EFBFBD>Χ<EFBFBD><CEA7>
		Rect GetBoundingBox() const;

		// <20><>ȡ<EFBFBD><C8A1>ά<EFBFBD>任<EFBFBD><E4BBBB><EFBFBD><EFBFBD>
		Matrix const& GetTransformMatrix()  const;

		// <20><>ȡ<EFBFBD><C8A1>ά<EFBFBD>任<EFBFBD><E4BBBB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
		Matrix const& GetTransformInverseMatrix()  const;

		// <20><>ȡ<EFBFBD><C8A1><EFBFBD>ڵ<EFBFBD>
		inline Node* GetParent() const { return parent_; }

		// <20><>ȡ<EFBFBD><C8A1><EFBFBD>ڳ<EFBFBD><DAB3><EFBFBD>
		inline Scene* GetScene() const { return scene_; }

		// <20><><EFBFBD><EFBFBD><EFBFBD>Ƿ<EFBFBD><C7B7><EFBFBD>ʾ
		void SetVisible(
			bool val
		);

		// <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
		void SetName(
			String const& name
		);

		// <20><><EFBFBD>ú<EFBFBD><C3BA><EFBFBD><EFBFBD><EFBFBD>
		void SetPositionX(
			float x
		);

		// <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
		void SetPositionY(
			float y
		);

		// <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
		void SetPosition(
			const Point & point
		);

		// <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
		void SetPosition(
			float x,
			float y
		);

		// <20>ƶ<EFBFBD>
		void Move(
			float x,
			float y
		);

		// <20>ƶ<EFBFBD>
		void Move(
			const Point & vector
		);

		// <20><><EFBFBD>ú<EFBFBD><C3BA><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ű<EFBFBD><C5B1><EFBFBD>
		// Ĭ<><C4AC>Ϊ 1.0
		void SetScaleX(
			float scale_x
		);

		// <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ű<EFBFBD><C5B1><EFBFBD>
		// Ĭ<><C4AC>Ϊ 1.0
		void SetScaleY(
			float scale_y
		);

		// <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ű<EFBFBD><C5B1><EFBFBD>
		// Ĭ<><C4AC>Ϊ (1.0, 1.0)
		void SetScale(
			float scale_x,
			float scale_y
		);

		// <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ű<EFBFBD><C5B1><EFBFBD>
		// Ĭ<><C4AC>Ϊ 1.0
		void SetScale(
			float scale
		);

		// <20><><EFBFBD>ú<EFBFBD><C3BA><EFBFBD><EFBFBD><EFBFBD><EFBFBD>нǶ<D0BD>
		// Ĭ<><C4AC>Ϊ 0
		void SetSkewX(
			float skew_x
		);

		// <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>нǶ<D0BD>
		// Ĭ<><C4AC>Ϊ 0
		void SetSkewY(
			float skew_y
		);

		// <20><><EFBFBD>ô<EFBFBD><C3B4>нǶ<D0BD>
		// Ĭ<><C4AC>Ϊ (0, 0)
		void SetSkew(
			float skew_x,
			float skew_y
		);

		// <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ת<EFBFBD>Ƕ<EFBFBD>
		// Ĭ<><C4AC>Ϊ 0
		void SetRotation(
			float rotation
		);

		// <20><><EFBFBD><EFBFBD>ê<EFBFBD><C3AA><EFBFBD>ĺ<EFBFBD><C4BA><EFBFBD>λ<EFBFBD><CEBB>
		// Ĭ<><C4AC>Ϊ 0, <20><>Χ [0, 1]
		void SetAnchorX(
			float anchor_x
		);

		// <20><><EFBFBD><EFBFBD>ê<EFBFBD><C3AA><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>λ<EFBFBD><CEBB>
		// Ĭ<><C4AC>Ϊ 0, <20><>Χ [0, 1]
		void SetAnchorY(
			float anchor_y
		);

		// <20><><EFBFBD><EFBFBD>ê<EFBFBD><C3AA>λ<EFBFBD><CEBB>
		// Ĭ<><C4AC>Ϊ (0, 0), <20><>Χ [0, 1]
		void SetAnchor(
			float anchor_x,
			float anchor_y
		);

		// <20>޸Ŀ<DEB8><C4BF><EFBFBD>
		void SetWidth(
			float width
		);

		// <20>޸ĸ߶<C4B8>
		void SetHeight(
			float height
		);

		// <20>޸Ĵ<DEB8>С
		void SetSize(
			float width,
			float height
		);

		// <20>޸Ĵ<DEB8>С
		void SetSize(
			const Size & size
		);

		void SetTransform(
			Transform const& transform
		);

		// <20><><EFBFBD><EFBFBD>͸<EFBFBD><CDB8><EFBFBD><EFBFBD>
		// Ĭ<><C4AC>Ϊ 1.0, <20><>Χ [0, 1]
		void SetOpacity(
			float opacity
		);

		// <20><><EFBFBD><EFBFBD> Z <20><>˳<EFBFBD><CBB3>
		// Ĭ<><C4AC>Ϊ 0
		void SetZOrder(
			int zorder
		);

		// <20>Ƿ<EFBFBD><C7B7><EFBFBD><EFBFBD><EFBFBD>Ӧ (<28><><EFBFBD><EFBFBD> Hover | Out | Click <20><>Ϣ)
		// Ĭ<><C4AC>Ϊ false
		void SetResponsible(
			bool enable
		);

		// <20>жϵ<D0B6><CFB5>Ƿ<EFBFBD><C7B7>ڽڵ<DABD><DAB5><EFBFBD>
		bool ContainsPoint(
			const Point& point
		)  const;

		// <20><><EFBFBD><EFBFBD><EFBFBD>ӽڵ<D3BD>
		void AddChild(
			NodePtr const& child
		);

		// <20><><EFBFBD>Ӷ<EFBFBD><D3B6><EFBFBD><EFBFBD>ӽڵ<D3BD>
		void AddChildren(
			Array<NodePtr> const& children
		);

		// <20><>ȡ<EFBFBD><C8A1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ͬ<EFBFBD><CDAC><EFBFBD>ӽڵ<D3BD>
		Array<NodePtr> GetChildren(
			String const& name
		) const;

		// <20><>ȡ<EFBFBD><C8A1><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ͬ<EFBFBD><CDAC><EFBFBD>ӽڵ<D3BD>
		NodePtr GetChild(
			String const& name
		) const;

		// <20><>ȡȫ<C8A1><C8AB><EFBFBD>ӽڵ<D3BD>
		Children const& GetChildren() const;

		// <20>Ƴ<EFBFBD><C6B3>ӽڵ<D3BD>
		bool RemoveChild(
			NodePtr const& child
		);

		// <20>Ƴ<EFBFBD><C6B3>ӽڵ<D3BD>
		bool RemoveChild(
			Node* child
		);

		// <20>Ƴ<EFBFBD><C6B3><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ͬ<EFBFBD><CDAC><EFBFBD>ӽڵ<D3BD>
		void RemoveChildren(
			String const& child_name
		);

		// <20>Ƴ<EFBFBD><C6B3><EFBFBD><EFBFBD>нڵ<D0BD>
		void RemoveAllChildren();

		// <20>Ӹ<EFBFBD><D3B8>ڵ<EFBFBD><DAB5>Ƴ<EFBFBD>
		void RemoveFromParent();

		// <20><>ͣ<EFBFBD>ڵ<EFBFBD><DAB5><EFBFBD><EFBFBD><EFBFBD>
		inline void PauseUpdating()									{ update_pausing_ = true; }

		// <20><><EFBFBD><EFBFBD><EFBFBD>ڵ<EFBFBD><DAB5><EFBFBD><EFBFBD><EFBFBD>
		inline void ResumeUpdating()								{ update_pausing_ = false; }

		// <20>ڵ<EFBFBD><DAB5><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ƿ<EFBFBD><C7B7><EFBFBD>ͣ
		inline bool IsUpdatePausing() const							{ return update_pausing_; }

		// <20><><EFBFBD>ø<EFBFBD><C3B8><EFBFBD>ʱ<EFBFBD>Ļص<C4BB><D8B5><EFBFBD><EFBFBD><EFBFBD>
		inline void SetCallbackOnUpdate(UpdateCallback const& cb)	{ cb_update_ = cb; }

		// <20><>ȡ<EFBFBD><C8A1><EFBFBD><EFBFBD>ʱ<EFBFBD>Ļص<C4BB><D8B5><EFBFBD><EFBFBD><EFBFBD>
		inline UpdateCallback const& GetCallbackOnUpdate()			{ return cb_update_; }

		// <20><><EFBFBD><EFBFBD>Ĭ<EFBFBD><C4AC>ê<EFBFBD><C3AA>
		static void SetDefaultAnchor(
			float anchor_x,
			float anchor_y
		);

	public:
		// <20>¼<EFBFBD><C2BC>ַ<EFBFBD>
		void Dispatch(Event& evt) override;

	protected:
		virtual void PrepareRender() {}

		void Update(Duration dt);

		void Render();

		void UpdateTransform() const;

		void UpdateOpacity();

		void SetScene(Scene* scene);

	protected:
		bool		visible_;
		bool		hover_;
		bool		pressed_;
		bool		responsible_;
		bool		update_pausing_;
		int			z_order_;
		float		opacity_;
		float		display_opacity_;
		size_t		hash_name_;
		Transform	transform_;
		Point		anchor_;
		Size		size_;
		Node*		parent_;
		Scene*		scene_;
		Children	children_;
		UpdateCallback cb_update_;

		mutable bool	dirty_transform_;
		mutable bool	dirty_transform_inverse_;
		mutable Matrix	transform_matrix_;
		mutable Matrix	transform_matrix_inverse_;
	};


	// <20><><EFBFBD>ӻ<EFBFBD><D3BB>ڵ<EFBFBD>
	class E2D_API VisualNode
		: public Node
	{
	public:
		virtual void PrepareRender() override;
	};

}