98 lines
		
	
	
		
			2.7 KiB
		
	
	
	
		
			C++
		
	
	
	
			
		
		
	
	
			98 lines
		
	
	
		
			2.7 KiB
		
	
	
	
		
			C++
		
	
	
	
// Copyright (c) 2016-2018 Kiwano - 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 "Node.h"
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#include "../base/Resource.h"
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#include "../renderer/render.h"
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namespace kiwano
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{
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	class KGE_API GifSprite
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		: public VisualNode
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	{
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	public:
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		using LoopDoneCallback = Closure<void(int)>;
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		using DoneCallback = Closure<void()>;
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		GifSprite();
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		GifSprite(
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			Resource const& res
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		);
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		GifSprite(
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			GifImagePtr image
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		);
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		bool Load(
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			Resource const& res
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		);
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		bool Load(
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			GifImagePtr image
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		);
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		// 设置 GIF 动画循环次数
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		inline void SetLoopCount(int loops)							{ total_loop_count_ = loops; }
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		// 设置 GIF 动画每次循环结束回调函数
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		inline void SetLoopDoneCallback(LoopDoneCallback const& cb)	{ loop_cb_ = cb; }
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		// 设置 GIF 动画结束回调函数
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		inline void SetDoneCallback(DoneCallback const& cb)			{ done_cb_ = cb; }
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		// 重新播放动画
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		void RestartAnimation();
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		inline LoopDoneCallback GetLoopDoneCallback() const			{ return loop_cb_; }
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		inline DoneCallback GetDoneCallback() const					{ return done_cb_; }
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		void OnRender() override;
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	protected:
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		void Update(Duration dt) override;
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		void ComposeNextFrame();
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		HRESULT OverlayNextFrame();
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		inline bool IsLastFrame() const								{ return (next_index_ == 0); }
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		inline bool EndOfAnimation() const							{ return IsLastFrame() && loop_count_ == total_loop_count_ + 1; }
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	protected:
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		bool			animating_;
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		int				total_loop_count_;
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		int				loop_count_;
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		unsigned int	next_index_;
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		Duration		frame_delay_;
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		Duration		frame_elapsed_;
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		LoopDoneCallback	loop_cb_;
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		DoneCallback		done_cb_;
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		GifImagePtr						image_;
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		ComPtr<ID2D1Bitmap>				frame_to_render_;
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		ComPtr<ID2D1BitmapRenderTarget>	frame_rt_;
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	};
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}
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