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A framework based on pdfbox
package wiki.xsx.core.pdf.header;
import lombok.Data;
import lombok.experimental.Accessors;
import org.apache.pdfbox.pdmodel.common.PDRectangle;
import wiki.xsx.core.pdf.component.XEasyPdfComponent;
import wiki.xsx.core.pdf.component.image.XEasyPdfImage;
import wiki.xsx.core.pdf.component.line.XEasyPdfLine;
import wiki.xsx.core.pdf.component.text.XEasyPdfText;
import wiki.xsx.core.pdf.doc.XEasyPdfDocument;
import wiki.xsx.core.pdf.doc.XEasyPdfPage;
import java.io.Serializable;
import java.util.ArrayList;
import java.util.List;
/**
* pdf页眉组件参数
*
* @author xsx
* @date 2020/6/7
* @since 1.8
*
* Copyright (c) 2020-2022 xsx All Rights Reserved.
* x-easypdf is licensed under Mulan PSL v2.
* You can use this software according to the terms and conditions of the Mulan PSL v2.
* You may obtain a copy of Mulan PSL v2 at:
* http://license.coscl.org.cn/MulanPSL2
* THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND,
* EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT,
* MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
* See the Mulan PSL v2 for more details.
*
*/
@Data
@Accessors(chain = true)
class XEasyPdfHeaderParam implements Serializable {
private static final long serialVersionUID = -5055961872807917576L;
/**
* 是否重置上下文
*/
private Boolean isResetContext;
/**
* 文本
*/
private XEasyPdfText text;
/**
* 图片
*/
private XEasyPdfImage image;
/**
* 自定义组件
*/
private XEasyPdfComponent component;
/**
* 分割线列表
*/
private List lineList = new ArrayList<>(6);
/**
* 左边距
*/
private Float marginLeft = 0F;
/**
* 右边距
*/
private Float marginRight = 0F;
/**
* 上边距
*/
private Float marginTop = 5F;
/**
* 页面X轴起始坐标(图片)
*/
private Float imageBeginX;
/**
* 页面Y轴起始坐标(图片)
*/
private Float imageBeginY;
/**
* 页面X轴起始坐标(文本)
*/
private Float textBeginX;
/**
* 页面Y轴起始坐标(文本)
*/
private Float textBeginY;
/**
* 高度
*/
private Float height;
/**
* 初始化
*
* @param document pdf文档
* @param page pdf页面
*/
void init(XEasyPdfDocument document, XEasyPdfPage page) {
// 如果重置上下文未初始化,则初始化为文档重置上下文
if (this.isResetContext == null) {
// 初始化为文档重置上下文
this.isResetContext = page.isResetContext();
}
// 初始化高度
this.initHeight(document, page);
// 获取pdfBox最新页面尺寸
PDRectangle rectangle = page.getLastPage().getMediaBox();
// 获取Y轴起始坐标
float beginY = rectangle.getHeight() - this.marginTop;
// 如果图片不为空,则初始化图片坐标
if (this.image != null && this.imageBeginX == null && this.imageBeginY == null) {
// 初始化图片X轴起始坐标
this.imageBeginX = this.marginLeft;
// 初始化图片Y轴起始坐标
this.imageBeginY = beginY;
}
// 如果文本不为空,则初始化文本坐标
if (this.text != null && this.textBeginX == null && this.textBeginY == null) {
// 初始化文本X轴起始坐标
this.textBeginX = this.marginLeft;
// 初始化文本Y轴起始坐标
this.textBeginY = beginY;
}
}
/**
* 初始化高度
*
* @param document pdf文档
* @param page pdf页面
*/
private void initHeight(XEasyPdfDocument document, XEasyPdfPage page) {
// 如果高度未初始化,则进行初始化
if (this.height == null) {
// 定义文本高度
float textHeight = 0F;
// 如果文本不为空,则获取文本高度
if (this.text != null) {
// 获取文本高度
textHeight = this.text.getHeight(document, page);
}
// 定义图片高度
float imageHeight = 0F;
// 如果图片不为空,则获取图片高度
if (this.image != null) {
// 关闭图片自适应
this.image.disableSelfAdaption();
// 如果自定义图片宽度为空,则设置为页面宽度
if (this.image.getWidth(document, page) == null) {
// 设置为页面宽度
this.image.setWidth(page.getLastPage().getMediaBox().getWidth());
}
// 获取图片高度
imageHeight = this.image.getHeight(document, page);
}
// 初始化高度,文本高度与图片高度取最大值,加上边距
this.height = Math.max(textHeight, imageHeight) + this.marginTop;
}
}
}
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