139 lines
3.3 KiB
C++
139 lines
3.3 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 <kiwano/core/Time.h>
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#include <kiwano/render/Texture.h>
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namespace kiwano
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{
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KGE_DECLARE_SMART_PTR(GifImage);
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/**
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* \addtogroup Render
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* @{
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*/
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/**
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* \~chinese
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* @brief GIF图像
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*/
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class KGE_API GifImage : public NativeObject
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{
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public:
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/// \~chinese
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/// @brief 创建GIF图片
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static GifImagePtr Create(String const& file_path);
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/// \~chinese
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/// @brief 创建GIF图片
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static GifImagePtr Create(Resource const& res);
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GifImage();
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/// \~chinese
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/// @brief 加载本地GIF图片
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bool Load(String const& file_path);
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/// \~chinese
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/// @brief 加载GIF资源
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bool Load(Resource const& res);
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/// \~chinese
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/// @brief 获取像素宽度
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uint32_t GetWidthInPixels() const;
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/// \~chinese
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/// @brief 获取像素高度
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uint32_t GetHeightInPixels() const;
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/// \~chinese
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/// @brief 获取像素大小
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PixelSize GetSizeInPixels() const;
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/// \~chinese
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/// @brief 获取帧数量
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uint32_t GetFramesCount() const;
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public:
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/// \~chinese
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/// @brief GIF帧的处置方式
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enum class DisposalType
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{
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Unknown, ///< 未知
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None, ///< 不处理
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Background, ///< 背景
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Previous ///< 恢复前一帧
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};
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/// \~chinese
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/// @brief GIF帧
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struct Frame
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{
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Duration delay; ///< 帧延迟
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TexturePtr texture; ///< 帧图像
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Rect rect; ///< 绘制区域
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DisposalType disposal_type; ///< 处置方式
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Frame();
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};
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/// \~chinese
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/// @brief 获取GIF帧
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/// @param index 帧下标
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Frame GetFrame(uint32_t index);
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private:
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bool GetGlobalMetadata();
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private:
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uint32_t frames_count_;
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PixelSize size_in_pixels_;
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};
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/** @} */
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inline GifImage::Frame::Frame()
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: disposal_type(DisposalType::Unknown)
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{
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}
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inline uint32_t GifImage::GetWidthInPixels() const
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{
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return size_in_pixels_.x;
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}
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inline uint32_t GifImage::GetHeightInPixels() const
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{
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return size_in_pixels_.y;
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}
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inline PixelSize GifImage::GetSizeInPixels() const
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{
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return size_in_pixels_;
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}
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inline uint32_t GifImage::GetFramesCount() const
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{
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return frames_count_;
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}
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} // namespace kiwano
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