server/src/main/java/cn/com/qmth/scancentral/bean/card/CardFile.java

package cn.com.qmth.scancentral.bean.card;

import java.awt.Image;
import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.util.Base64;
import java.util.LinkedList;
import java.util.List;

import javax.imageio.ImageIO;

import com.fasterxml.jackson.annotation.JsonIgnore;
import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
import com.qmth.boot.core.exception.ParameterException;

/**
 * 卡格式文件内容结构
 */
@JsonIgnoreProperties(ignoreUnknown = true)
public class CardFile {

    private String version;

    private boolean adapted;

    private List<CardPageWrapper> pages;

    @JsonIgnore
    private SliceConfig sliceConfig;

    @JsonIgnore
    private List<String> sliceName;

    public String getVersion() {
        return version;
    }

    public void setVersion(String version) {
        this.version = version;
    }

    public boolean isAdapted() {
        return adapted;
    }

    public void setAdapted(boolean adapted) {
        this.adapted = adapted;
    }

    public List<CardPageWrapper> getPages() {
        return pages;
    }

    public void setPages(List<CardPageWrapper> pages) {
        this.pages = pages;
    }

    /**
     * 解析卡格式文件中的裁切图坐标，用于云阅卷同步
     *
     * @return
     */
    public SliceConfig getSliceConfig() throws IOException {
        if (sliceConfig == null) {
            sliceConfig = new SliceConfig();
            if (pages != null) {
                int pageNumber = 0;
                for (CardPageWrapper pageWrapper : pages) {
                    pageNumber++;
                    CardPage page = pageWrapper.getExchange();
                    // 遮盖模式
                    if (page.getInfoArea() != null && page.getInfoArea().length > 0) {
                        sliceConfig.addConfig(pageNumber, 0, 0, 0, 0);
                    }
                    // 裁切模式
                    else if (page.getAnswerArea() != null && !page.getAnswerArea().isEmpty()) {
                        // 获取卡格式图片原始尺寸
                        // 此处图片base64编码特殊，需要采用Mime标准
                        Image image = ImageIO
                                .read(new ByteArrayInputStream(Base64.getMimeDecoder().decode(page.getPageImage())));
                        int width = image.getWidth(null);
                        int height = image.getHeight(null);
                        for (AnswerArea area : page.getAnswerArea()) {
                            sliceConfig.addConfig(pageNumber, (int) (area.getArea()[0] * width),
                                    (int) (area.getArea()[1] * height), (int) (area.getArea()[2] * width),
                                    (int) (area.getArea()[3] * height));
                        }
                    }
                }
            }
        }
        return sliceConfig;
    }

    public List<String> getSliceName() throws IOException {
        List<String> sliceName = new LinkedList<String>();
        if (pages != null) {
            for (CardPageWrapper pageWrapper : pages) {
                CardPage page = pageWrapper.getExchange();
                for (AnswerArea area : page.getAnswerArea()) {
                    if (area.getMainNumber() == null) {
                        throw new ParameterException("CET模式下裁切图必须指定大题号");
                    }
                    sliceName.add(area.getMainNumber().toString());
                }
            }
        }
        return sliceName;
    }
}