115 lines
3.4 KiB
C++
115 lines
3.4 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 GifImage
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: public VisualNode
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{
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public:
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typedef Closure<void(int)> LoopDoneCallback;
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typedef Closure<void()> DoneCallback;
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GifImage();
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GifImage(
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Resource const& res
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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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// 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 Restart();
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inline int GetFramesCount() const { return static_cast<int>(frames_count_); }
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inline int GetLoopCount() const { return total_loop_count_; }
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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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HRESULT GetRawFrame(UINT frame_index);
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HRESULT GetGlobalMetadata();
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HRESULT GetBackgroundColor(IWICMetadataQueryReader* metadata_reader);
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HRESULT ComposeNextFrame();
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HRESULT DisposeCurrentFrame();
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HRESULT OverlayNextFrame();
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HRESULT SaveComposedFrame();
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HRESULT RestoreSavedFrame();
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HRESULT ClearCurrentFrameArea();
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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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Duration frame_delay_;
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Duration frame_elapsed_;
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ComPtr<IWICImagingFactory> factory_;
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ComPtr<ID2D1BitmapRenderTarget> frame_rt_;
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ComPtr<ID2D1Bitmap> raw_frame_;
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ComPtr<ID2D1Bitmap> saved_frame_;
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ComPtr<IWICBitmapDecoder> decoder_;
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enum class DisposalType
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{
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Unknown,
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None,
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Background,
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Previous
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};
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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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unsigned int frames_count_;
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unsigned int width_in_pixels_;
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unsigned int height_in_pixels_;
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DisposalType disposal_type_;
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D2D1_RECT_F frame_position_;
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D2D1_COLOR_F bg_color_;
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LoopDoneCallback loop_cb_;
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DoneCallback done_cb_;
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};
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}
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