package com.estate.expert.admin.stat.report.render;
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import com.deepoove.poi.data.PictureRenderData;
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import com.deepoove.poi.data.Pictures;
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import com.deepoove.poi.policy.PictureRenderPolicy;
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import com.estate.expert.admin.service.UserFileService;
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import lombok.AllArgsConstructor;
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/**
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* 自定义图片渲染策略
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*/
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@AllArgsConstructor
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public class CustomPictureRenderPolicy extends PictureRenderPolicy {
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private UserFileService userFileService;
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/**
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* 渲染图片
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* @param source 源
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* @return 图片渲染数据
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* @throws Exception 异常
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*/
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@Override
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public PictureRenderData cast(Object source) throws Exception {
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var id = (Integer)source;
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var file = userFileService.get(id);
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if(file == null){
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return null;
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}
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var resource = userFileService.resolveResource(file);
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if(resource == null){
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return null;
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}
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// 设置图片尺寸：宽度8.8cm，高度6.8cm
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// Word中1cm ≈ 37.795像素（96 DPI），所以8.8cm ≈ 333像素，6.8cm ≈ 257像素
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var data = Pictures.ofStream(resource.getInputStream()).size(333, 257).create();
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return super.cast(data);
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}
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}
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