139 lines
		
	
	
		
			3.4 KiB
		
	
	
	
		
			C++
		
	
	
	
			
		
		
	
	
			139 lines
		
	
	
		
			3.4 KiB
		
	
	
	
		
			C++
		
	
	
	
// Copyright (c) 2016-2018 Easy2D - Nomango
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// 
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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// 
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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// 
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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// THE SOFTWARE.
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#pragma once
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#include "../base/Node.h"
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#include <functional>
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namespace easy2d
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{
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	namespace ui
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	{
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		class Button
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			: public Node
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		{
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			E2D_DISABLE_COPY(Button);
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			using Callback = std::function<void()>;
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		public:
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			Button();
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			explicit Button(
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				spNode const& normal,					/* 普通状态 */
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				const Callback& func = nullptr	/* 按钮点击后的回调函数 */
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			);
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			explicit Button(
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				spNode const& normal,					/* 普通状态 */
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				spNode const& selected,				/* 鼠标按下状态 */
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				const Callback& func = nullptr	/* 按钮点击后的回调函数 */
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			);
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			explicit Button(
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				spNode const& normal,					/* 普通状态 */
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				spNode const& mouseover,				/* 鼠标移入状态 */
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				spNode const& selected,				/* 鼠标按下状态 */
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				const Callback& func = nullptr	/* 按钮点击后的回调函数 */
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			);
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			explicit Button(
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				spNode const& normal,					/* 普通状态 */
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				spNode const& mouseover,				/* 鼠标移入状态 */
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				spNode const& selected,				/* 鼠标移入状态 */
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				spNode const& disabled,				/* 按钮禁用状态 */
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				const Callback& func = nullptr	/* 按钮点击后的回调函数 */
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			);
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			virtual ~Button();
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			// 获取按钮状态是启用还是禁用
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			bool IsEnable() const;
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			// 设置按钮启用或禁用
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			void SetEnabled(
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				bool enabled
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			);
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			// 设置一般情况下显示的按钮
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			void SetNormal(
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				spNode const& normal
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			);
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			// 设置鼠标移入按钮时显示的按钮
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			void SetMouseOver(
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				spNode const& mouseover
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			);
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			// 设置鼠标按下按钮时显示的按钮
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			void SetSelected(
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				spNode const& selected
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			);
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			// 设置按钮被禁用时显示的按钮
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			void SetDisabled(
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				spNode const& disabled
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			);
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			// 设置按钮点击后的回调函数
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			void SetCallbackOnClick(
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				const Callback& func
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			);
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			// 设置支点位置
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			// 默认为 (0, 0), 范围 [0, 1]
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			virtual void SetPivot(
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				float pivot_x,
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				float pivot_y
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			) override;
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		private:
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			// 按钮状态枚举
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			enum class Status { Normal, Mouseover, Selected };
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			// 设置按钮状态
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			virtual void SetStatus(
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				Status status
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			);
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			// 刷新按钮显示
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			virtual void UpdateVisible();
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			// 分发鼠标消息
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			virtual bool Dispatch(
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				const MouseEvent& e,
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				bool handled
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			) override;
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			// 遍历节点
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			virtual void Visit() override;
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		private:
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			spNode		normal_;
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			spNode		mouseover_;
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			spNode		selected_;
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			spNode		disabled_;
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			bool		enabled_;
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			bool		is_selected_;
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			Status		status_;
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			Callback	callback_;
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		};
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	}
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} |