package com.*.utils;

import com.aspose.words.*;
import com.aspose.words.Shape;

import java.awt.*;

/**
 * 插入一個水印和多個水印
 */
public class WordWatermarkUtil {
    /**
     * 插入一個水印擺放正中間
     * @param watermarkText 水印內容
     * @param doc Document物件
     */
    public static void insertWatermarkText(Document doc, String watermarkText) {
        Shape watermark 
 
= new Shape(doc, ShapeType.TEXT_PLAIN_TEXT);
        watermark.getTextPath().setText(watermarkText);//水印內容
        watermark.getTextPath().setFontFamily("宋體");
        try {
            //具體字型內容大小進行自定義設定
            watermark.setWidth(500);//水印寬度
            watermark.setHeight(100);//水印高度
        } catch (Exception e) {
            e.printStackTrace();
        }
        watermark.setRotation(
 
-40);//旋轉水印
        watermark.getFill().setColor(Color.lightGray); //填充顏色(沒有填充顏色字會變成空心的)
        watermark.setStrokeColor(Color.lightGray);//水印顏色 淺灰色
        watermark.setRelativeHorizontalPosition(RelativeHorizontalPosition.PAGE);//設定相對水平位置
        watermark.setRelativeVerticalPosition(RelativeVerticalPosition.PAGE);//
 
設定相對垂直位置
        watermark.setWrapType(WrapType.NONE);//設定包裝型別
        watermark.setVerticalAlignment(VerticalAlignment.CENTER);//設定垂直對齊
        watermark.setHorizontalAlignment(HorizontalAlignment.CENTER);//設定文字水平對齊
        Paragraph watermarkPara = new Paragraph(doc);
        watermarkPara.appendChild(watermark);
        for (Section sect : doc.getSections()) {
            insertWatermarkIntoHeader(watermarkPara, sect, HeaderFooterType.HEADER_PRIMARY);
            insertWatermarkIntoHeader(watermarkPara, sect, HeaderFooterType.HEADER_FIRST);
            insertWatermarkIntoHeader(watermarkPara, sect, HeaderFooterType.HEADER_EVEN);
        }
    }

    /**
     * 插入多個水印
     * @param watermarkText 水印內容
     * @param doc Document物件
     */
    public static void insertMoreWatermarkText(Document doc, String watermarkText) {
        Paragraph watermarkPara = new Paragraph(doc);
        //迴圈新增水印，這裡橫縱都在一條水平線，不太好看，可以對i和j控制使之有適當位移
        for (int j = -30; j < 700; j = j + 200) {
            for (int i = 50; i < 500; i = i + 100) {
                Shape waterShape = ShapeMore(doc, watermarkText, j, i);
                watermarkPara.appendChild(waterShape);
            }
        }
        for (Section sect : doc.getSections()) {
            insertWatermarkIntoHeader(watermarkPara, sect, HeaderFooterType.HEADER_PRIMARY);
            insertWatermarkIntoHeader(watermarkPara, sect, HeaderFooterType.HEADER_FIRST);
            insertWatermarkIntoHeader(watermarkPara, sect, HeaderFooterType.HEADER_EVEN);
        }
    }

    /**
     * @param doc 操作的文件物件
     * @param watermarkText 水印內容
     * @param left 距離左邊的距離
     * @param top 距離頂部的距離
     * @return
     */
    public static Shape ShapeMore(Document doc, String watermarkText, double left, double top){
        Shape waterShape = new Shape(doc, ShapeType.TEXT_PLAIN_TEXT);
        //水印內容
        waterShape.getTextPath().setText(watermarkText);
        //水印字型
        waterShape.getTextPath().setFontFamily("楷體");
        try {
            //具體字型內容大小進行自定義設定
            waterShape.setWidth(136);//水印寬度
            waterShape.setHeight(18);//水印高度
        } catch (Exception e) {
            e.printStackTrace();
        }
        //旋轉水印
        waterShape.setRotation(-40);
        //填充顏色(沒有填充顏色字會變成空心的)
        waterShape.getFill().setColor(new Color(217,217,217));
        //水印顏色 淺灰色
        waterShape.setStrokeColor(new Color(217,217,217));
        //將水印放置在頁面中心
        waterShape.setLeft(left);
        waterShape.setTop(top);
        //設定包裝型別
        waterShape.setWrapType(WrapType.NONE);
        return waterShape;
    }

    /**
     * 插入水印
     * @param watermarkPara 水印段落
     * @param sect 部件
     * @param headerType 頭標型別欄位
     */
    private static void insertWatermarkIntoHeader(Paragraph watermarkPara, Section sect, int headerType) {
        HeaderFooter header = sect.getHeadersFooters().getByHeaderFooterType(headerType);
        if (header == null) {
            header = new HeaderFooter(sect.getDocument(), headerType);
            sect.getHeadersFooters().add(header);
        }
        header.appendChild(watermarkPara.deepClone(true));
    }
}