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org.ddr.poi.html.HtmlRenderContext Maven / Gradle / Ivy
/*
* Copyright 2016 - 2021 Draco, https://github.com/draco1023
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.ddr.poi.html;
import com.deepoove.poi.render.RenderContext;
import com.steadystate.css.dom.CSSStyleDeclarationImpl;
import org.apache.commons.lang3.StringUtils;
import org.apache.commons.lang3.math.NumberUtils;
import org.apache.poi.ooxml.util.POIXMLUnits;
import org.apache.poi.openxml4j.exceptions.InvalidFormatException;
import org.apache.poi.util.Units;
import org.apache.poi.xwpf.usermodel.BodyType;
import org.apache.poi.xwpf.usermodel.IBody;
import org.apache.poi.xwpf.usermodel.IRunBody;
import org.apache.poi.xwpf.usermodel.SVGPictureData;
import org.apache.poi.xwpf.usermodel.SVGRelation;
import org.apache.poi.xwpf.usermodel.XWPFDocument;
import org.apache.poi.xwpf.usermodel.XWPFFooter;
import org.apache.poi.xwpf.usermodel.XWPFFootnote;
import org.apache.poi.xwpf.usermodel.XWPFHeader;
import org.apache.poi.xwpf.usermodel.XWPFHyperlinkRun;
import org.apache.poi.xwpf.usermodel.XWPFParagraph;
import org.apache.poi.xwpf.usermodel.XWPFPicture;
import org.apache.poi.xwpf.usermodel.XWPFRelation;
import org.apache.poi.xwpf.usermodel.XWPFRun;
import org.apache.poi.xwpf.usermodel.XWPFStyle;
import org.apache.poi.xwpf.usermodel.XWPFStyles;
import org.apache.poi.xwpf.usermodel.XWPFTable;
import org.apache.poi.xwpf.usermodel.XWPFTableCell;
import org.apache.xmlbeans.XmlCursor;
import org.apache.xmlbeans.XmlObject;
import org.apache.xmlbeans.impl.xb.xmlschema.SpaceAttribute;
import org.ddr.poi.html.util.CSSLength;
import org.ddr.poi.html.util.CSSLengthUnit;
import org.ddr.poi.html.util.CSSStyleUtils;
import org.ddr.poi.html.util.Colors;
import org.ddr.poi.html.util.InlineStyle;
import org.ddr.poi.html.util.NamedFontSize;
import org.ddr.poi.html.util.NumberingContext;
import org.ddr.poi.html.util.RenderUtils;
import org.ddr.poi.html.util.WhiteSpaceRule;
import org.ddr.poi.html.util.XWPFParagraphRuns;
import org.ddr.poi.util.XmlUtils;
import org.jsoup.internal.StringUtil;
import org.jsoup.nodes.Document;
import org.jsoup.nodes.Element;
import org.jsoup.nodes.Node;
import org.jsoup.nodes.TextNode;
import org.openxmlformats.schemas.drawingml.x2006.main.CTBlip;
import org.openxmlformats.schemas.drawingml.x2006.main.CTGraphicalObjectFrameLocking;
import org.openxmlformats.schemas.drawingml.x2006.main.CTNonVisualGraphicFrameProperties;
import org.openxmlformats.schemas.drawingml.x2006.main.CTOfficeArtExtension;
import org.openxmlformats.schemas.drawingml.x2006.main.CTOfficeArtExtensionList;
import org.openxmlformats.schemas.drawingml.x2006.picture.CTPicture;
import org.openxmlformats.schemas.drawingml.x2006.wordprocessingDrawing.CTAnchor;
import org.openxmlformats.schemas.drawingml.x2006.wordprocessingDrawing.CTInline;
import org.openxmlformats.schemas.drawingml.x2006.wordprocessingDrawing.CTPosH;
import org.openxmlformats.schemas.drawingml.x2006.wordprocessingDrawing.CTPosV;
import org.openxmlformats.schemas.drawingml.x2006.wordprocessingDrawing.STAlignH;
import org.openxmlformats.schemas.drawingml.x2006.wordprocessingDrawing.STAlignV;
import org.openxmlformats.schemas.drawingml.x2006.wordprocessingDrawing.STRelFromH;
import org.openxmlformats.schemas.drawingml.x2006.wordprocessingDrawing.STRelFromV;
import org.openxmlformats.schemas.officeDocument.x2006.sharedTypes.STVerticalAlignRun;
import org.openxmlformats.schemas.wordprocessingml.x2006.main.CTBookmark;
import org.openxmlformats.schemas.wordprocessingml.x2006.main.CTColor;
import org.openxmlformats.schemas.wordprocessingml.x2006.main.CTDrawing;
import org.openxmlformats.schemas.wordprocessingml.x2006.main.CTFonts;
import org.openxmlformats.schemas.wordprocessingml.x2006.main.CTHyperlink;
import org.openxmlformats.schemas.wordprocessingml.x2006.main.CTMarkupRange;
import org.openxmlformats.schemas.wordprocessingml.x2006.main.CTP;
import org.openxmlformats.schemas.wordprocessingml.x2006.main.CTPPr;
import org.openxmlformats.schemas.wordprocessingml.x2006.main.CTPageMar;
import org.openxmlformats.schemas.wordprocessingml.x2006.main.CTPageSz;
import org.openxmlformats.schemas.wordprocessingml.x2006.main.CTR;
import org.openxmlformats.schemas.wordprocessingml.x2006.main.CTRPr;
import org.openxmlformats.schemas.wordprocessingml.x2006.main.CTSectPr;
import org.openxmlformats.schemas.wordprocessingml.x2006.main.CTShd;
import org.openxmlformats.schemas.wordprocessingml.x2006.main.CTStyle;
import org.openxmlformats.schemas.wordprocessingml.x2006.main.CTTbl;
import org.openxmlformats.schemas.wordprocessingml.x2006.main.CTTblBorders;
import org.openxmlformats.schemas.wordprocessingml.x2006.main.CTTblPr;
import org.openxmlformats.schemas.wordprocessingml.x2006.main.CTText;
import org.openxmlformats.schemas.wordprocessingml.x2006.main.CTUnderline;
import org.openxmlformats.schemas.wordprocessingml.x2006.main.STBorder;
import org.openxmlformats.schemas.wordprocessingml.x2006.main.STShd;
import org.openxmlformats.schemas.wordprocessingml.x2006.main.STStyleType;
import org.openxmlformats.schemas.wordprocessingml.x2006.main.STThemeColor;
import org.openxmlformats.schemas.wordprocessingml.x2006.main.STUnderline;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import javax.xml.namespace.QName;
import java.io.IOException;
import java.io.InputStream;
import java.math.BigInteger;
import java.net.URI;
import java.util.HashSet;
import java.util.LinkedList;
import java.util.Set;
/**
* HTML字符串渲染上下文
*
* @author Draco
* @since 2021-02-08
*/
public class HtmlRenderContext extends RenderContext {
private static final Logger log = LoggerFactory.getLogger(HtmlRenderContext.class);
private static final QName R_QNAME = new QName("http://schemas.openxmlformats.org/wordprocessingml/2006/main", "r");
private static final QName HYPERLINK_QNAME = new QName("http://schemas.openxmlformats.org/wordprocessingml/2006/main", "hyperlink");
/**
* 默认字号 小四 12pt 16px
*/
private static final CSSLength DEFAULT_FONT_SIZE = new CSSLength(12, CSSLengthUnit.PT);
/**
* 默认超链接颜色
*/
private static final String DEFAULT_HYPERLINK_COLOR = "0563C1";
/**
* HTML元素渲染器提供者
*/
private final ElementRendererProvider rendererProvider;
/**
* 父容器（子元素通常为段落/表格）栈，主要用于渲染HTML表格时父容器的切换
*/
private LinkedList ancestors = new LinkedList<>();
/**
* 行内样式栈，最近声明的样式最先生效
*/
private LinkedList inlineStyles = new LinkedList<>();
/**
* 字号栈，一些相对大小的字号值将被进行换算
*/
private LinkedList fontSizesInHalfPoints = new LinkedList<>();
/**
* 列表上下文，用于处理嵌套列表
*/
private final NumberingContext numberingContext;
/**
* 默认字号
*/
private final CSSLength defaultFontSize;
/**
* 页面宽度
*/
private final CSSLength pageWidth;
/**
* 页面高度
*/
private final CSSLength pageHeight;
/**
* 页面顶部边距
*/
private final CSSLength marginTop;
/**
* 页面右侧边距
*/
private final CSSLength marginRight;
/**
* 页面底部边距
*/
private final CSSLength marginBottom;
/**
* 页面左侧边距
*/
private final CSSLength marginLeft;
/**
* 可用页面宽度
*/
private final int availablePageWidth;
/**
* 可用页面高度
*/
private final int availablePageHeight;
/**
* 占位符所在段落的样式ID
*/
private String placeholderStyleId;
/**
* 当前Run元素，可能为超链接
*/
private XWPFRun currentRun;
/**
* 全局字体，声明后所有样式中的字体将失效
*/
private String globalFont;
/**
* 全局字号，声明后所有样式中的字号将失效
*/
private BigInteger globalFontSize;
/**
* 嵌套表格是否默认显示边框
*/
private boolean showDefaultTableBorderInTableCell;
/**
* 块状元素深度计数器
*/
private int blockLevel;
/**
* 全局xml指针，保证其总是处于将要插入内容的位置，仅在需要移动之前进行push，适时pop还原位置
*/
private XmlCursor globalCursor;
/**
* 防重段落
*/
private XWPFParagraph dedupeParagraph;
/**
* 同一段落内的前一个文本节点
*/
private TextWrapper previousText;
/**
* 构造方法
*
* @param context 原始渲染上下文
*/
public HtmlRenderContext(RenderContext context, ElementRendererProvider rendererProvider) {
super(context.getEleTemplate(), context.getData(), context.getTemplate());
this.rendererProvider = rendererProvider;
globalCursor = getRun().getCTR().newCursor();
numberingContext = new NumberingContext(getXWPFDocument());
long w = RenderUtils.A4_WIDTH * Units.EMU_PER_DXA;
long h = RenderUtils.A4_HEIGHT * Units.EMU_PER_DXA;
long top = RenderUtils.DEFAULT_TOP_MARGIN * Units.EMU_PER_DXA;
long right = RenderUtils.DEFAULT_RIGHT_MARGIN * Units.EMU_PER_DXA;
long bottom = RenderUtils.DEFAULT_BOTTOM_MARGIN * Units.EMU_PER_DXA;
long left = RenderUtils.DEFAULT_LEFT_MARGIN * Units.EMU_PER_DXA;
CTSectPr sectPr = getXWPFDocument().getDocument().getBody().getSectPr();
if (sectPr != null) {
CTPageSz pgSz = sectPr.getPgSz();
if (pgSz != null) {
w = POIXMLUnits.parseLength(pgSz.xgetW());
h = POIXMLUnits.parseLength(pgSz.xgetH());
}
CTPageMar pgMar = sectPr.getPgMar();
if (pgMar != null) {
top = POIXMLUnits.parseLength(pgMar.xgetTop());
right = POIXMLUnits.parseLength(pgMar.xgetRight());
bottom = POIXMLUnits.parseLength(pgMar.xgetBottom());
left = POIXMLUnits.parseLength(pgMar.xgetLeft());
}
}
pageWidth = new CSSLength(w, CSSLengthUnit.EMU);
pageHeight = new CSSLength(h, CSSLengthUnit.EMU);
marginTop = new CSSLength(top, CSSLengthUnit.EMU);
marginRight = new CSSLength(right, CSSLengthUnit.EMU);
marginBottom = new CSSLength(bottom, CSSLengthUnit.EMU);
marginLeft = new CSSLength(left, CSSLengthUnit.EMU);
availablePageWidth = (int) (w - left - right);
availablePageHeight = (int) (h - top - bottom);
Double fontSize = getXWPFDocument().getStyles().getDefaultRunStyle().getFontSizeAsDouble();
defaultFontSize = fontSize != null ? new CSSLength(fontSize, CSSLengthUnit.PT) : DEFAULT_FONT_SIZE;
extractPlaceholderStyle();
}
/**
* 抽取占位符所在段落的样式
*/
private void extractPlaceholderStyle() {
XWPFRun run = getRun();
IRunBody runParent = run.getParent();
if (runParent instanceof XWPFParagraph) {
XWPFParagraph paragraph = (XWPFParagraph) runParent;
String styleId = paragraph.getStyleID();
boolean existsRPr = run.getCTR().isSetRPr();
if (styleId == null && !existsRPr) {
return;
} else if (styleId != null && !existsRPr) {
placeholderStyleId = styleId;
return;
}
XWPFStyles styles = getXWPFDocument().getStyles();
CTStyle newCTStyle = CTStyle.Factory.newInstance();
newCTStyle.setCustomStyle(true);
newCTStyle.setType(STStyleType.PARAGRAPH);
newCTStyle.addNewHidden();
newCTStyle.setRPr(run.getCTR().getRPr());
XmlUtils.removeNamespaces(newCTStyle.getRPr());
String newStyleId = styleId + styles.getNumberOfStyles();
newCTStyle.setStyleId(newStyleId);
newCTStyle.addNewName().setVal(newStyleId);
placeholderStyleId = newStyleId;
if (styleId != null) {
newCTStyle.addNewBasedOn().setVal(styleId);
}
XWPFStyle newStyle = new XWPFStyle(newCTStyle, styles);
styles.addStyle(newStyle);
paragraph.setStyle(newStyleId);
}
}
@Override
public IBody getContainer() {
IBody container = ancestors.peek();
return container == null ? super.getContainer() : container;
}
/**
* 父容器入栈
*
* @param body 父容器
*/
public void pushContainer(IBody body) {
ancestors.push(body);
}
/**
* 父容器出栈
*/
public void popContainer() {
ancestors.pop();
}
/**
* 获取最近的段落，如果当前最近位置的内容元素是表格，则创建一个与之平级的段落
*
* @return 最近的段落
*/
public XWPFParagraph getClosestParagraph() {
if (globalCursor.getObject() == getRun().getCTR()) {
return (XWPFParagraph) getRun().getParent();
}
globalCursor.push();
XWPFParagraph paragraph = null;
if (globalCursor.toPrevSibling()) {
XmlObject object = globalCursor.getObject();
if (object instanceof CTP) {
paragraph = getContainer().getParagraph((CTP) object);
} else {
// pop() is safer than toNextSibling()
globalCursor.pop();
globalCursor.push();
paragraph = newParagraph(null, globalCursor);
RenderUtils.paragraphStyle(this, paragraph, CSSStyleUtils.EMPTY_STYLE);
}
}
globalCursor.pop();
if (paragraph != null) {
return paragraph;
}
throw new IllegalStateException("No paragraph in stack");
}
/**
* 开始渲染超链接
*
* @param uri 链接地址
*/
public void startHyperlink(String uri) {
try {
URI.create(uri);
} catch (Exception e) {
log.warn("Illegal href", e);
uri = "#";
}
if (isBlocked()) {
XWPFParagraph paragraph = getClosestParagraph();
currentRun = paragraph.createHyperlinkRun(uri);
if (dedupeParagraph == paragraph) {
unmarkDedupe();
}
} else {
// 在占位符之前插入超链接
String rId = getRun().getParent().getPart().getPackagePart()
.addExternalRelationship(uri, XWPFRelation.HYPERLINK.getRelation()).getId();
XmlCursor xmlCursor = getRun().getCTR().newCursor();
xmlCursor.insertElement(HYPERLINK_QNAME);
xmlCursor.toPrevSibling();
CTHyperlink ctHyperlink = (CTHyperlink) xmlCursor.getObject();
xmlCursor.dispose();
ctHyperlink.setId(rId);
ctHyperlink.addNewR();
currentRun = new XWPFHyperlinkRun(ctHyperlink, ctHyperlink.getRArray(0), getRun().getParent());
}
}
/**
* 结束渲染超链接
*/
public void endHyperlink() {
currentRun = null;
}
/**
* 新建段落
*
* @param container 容器
* @param cursor xml指针
* @return 段落
*/
public XWPFParagraph newParagraph(IBody container, XmlCursor cursor) {
if (container == null) {
container = getContainer();
}
XWPFParagraph xwpfParagraph = container.insertNewParagraph(cursor);
if (placeholderStyleId != null) {
xwpfParagraph.setStyle(placeholderStyleId);
}
markDedupe(xwpfParagraph);
previousText = null;
return xwpfParagraph;
}
/**
* 新建CTR
*
* @return CTR
*/
public CTR newRun() {
// 超链接虽然不是段落，但是内部可以容纳多个run
if (currentRun instanceof XWPFHyperlinkRun) {
XmlCursor xmlCursor = currentRun.getCTR().newCursor();
CTR ctr;
if (xmlCursor.toFirstChild()) {
ctr = ((XWPFHyperlinkRun) currentRun).getCTHyperlink().addNewR();
} else {
// run没有内容则直接复用
ctr = currentRun.getCTR();
}
xmlCursor.dispose();
// 默认链接样式
initHyperlinkStyle(ctr);
return ctr;
}
// 考虑到样式可能不一致，总是创建新的run
if (isBlocked()) {
XWPFParagraph paragraph = getClosestParagraph();
currentRun = paragraph.createRun();
if (dedupeParagraph == paragraph) {
unmarkDedupe();
}
} else {
// 在占位符之前插入run
XmlCursor xmlCursor = getRun().getCTR().newCursor();
xmlCursor.insertElement(R_QNAME);
xmlCursor.toPrevSibling();
CTR ctr = (CTR) xmlCursor.getObject();
xmlCursor.dispose();
currentRun = new XWPFRun(ctr, getRun().getParent());
}
return currentRun.getCTR();
}
/**
* 初始化超链接样式
*
* @param ctr CTR
*/
private void initHyperlinkStyle(CTR ctr) {
CTRPr rPr = RenderUtils.getRPr(ctr);
CTColor ctColor = rPr.addNewColor();
ctColor.setVal(DEFAULT_HYPERLINK_COLOR);
ctColor.setThemeColor(STThemeColor.HYPERLINK);
rPr.addNewU().setVal(STUnderline.SINGLE);
}
/**
* 获取最近的表格，仅可在渲染表格及其内部元素的时候使用
*
* @return 最近的表格
*/
public XWPFTable getClosestTable() {
globalCursor.push();
XWPFTable table = null;
if (globalCursor.toPrevSibling()) {
XmlObject object = globalCursor.getObject();
if (object instanceof CTTbl) {
table = getContainer().getTable((CTTbl) object);
}
}
globalCursor.pop();
if (table != null) {
return table;
}
throw new IllegalStateException("No table in stack");
}
/**
* 行内样式入栈
*
* @param inlineStyle 样式声明
* @param block 是否为块状元素
*/
public void pushInlineStyle(CSSStyleDeclarationImpl inlineStyle, boolean block) {
String newFontSize = inlineStyle.getFontSize();
// 默认值表示未声明字号
int fontSize = Integer.MIN_VALUE;
if (StringUtils.isNotBlank(newFontSize)) {
NamedFontSize namedFontSize = NamedFontSize.of(newFontSize);
if (namedFontSize != null) {
// 固定名称的字号
fontSize = namedFontSize.getSize().toHalfPoints();
} else if (HtmlConstants.SMALLER.equalsIgnoreCase(newFontSize)) {
// 相对小一号
int inheritedFontSize = getInheritedFontSizeInHalfPoints();
fontSize = RenderUtils.smallerFontSizeInHalfPoints(inheritedFontSize);
} else if (HtmlConstants.LARGER.equalsIgnoreCase(newFontSize)) {
// 相对大一号
int inheritedFontSize = getInheritedFontSizeInHalfPoints();
fontSize = RenderUtils.largerFontSizeInHalfPoints(inheritedFontSize);
} else {
CSSLength cssLength = CSSLength.of(newFontSize);
if (cssLength.isValid()) {
if (cssLength.getUnit() == CSSLengthUnit.PERCENT) {
fontSize = (int) Math.rint(getInheritedFontSizeInHalfPoints()
* cssLength.getValue() * cssLength.getUnit().absoluteFactor());
} else {
int emu = lengthToEMU(cssLength);
fontSize = emu * 2 / Units.EMU_PER_POINT;
}
}
}
}
fontSizesInHalfPoints.push(fontSize);
// text-decoration-line 在继承时需要合并
String textDecorationLine = inlineStyle.getPropertyValue(HtmlConstants.CSS_TEXT_DECORATION_LINE);
if (StringUtils.isNotBlank(textDecorationLine) && !HtmlConstants.NONE.equals(textDecorationLine)) {
Set remainValues = new HashSet<>(HtmlConstants.TEXT_DECORATION_LINES);
String[] values = StringUtils.split(textDecorationLine, ' ');
for (String value : values) {
remainValues.remove(value);
}
if (!remainValues.isEmpty()) {
StringBuilder lines = new StringBuilder(textDecorationLine);
for (InlineStyle inheritedStyle : inlineStyles) {
String s = inheritedStyle.getDeclaration().getPropertyValue(HtmlConstants.CSS_TEXT_DECORATION_LINE);
if (HtmlConstants.NONE.equals(s)) {
break;
} else if (remainValues.contains(s)) {
lines.append(' ').append(s);
remainValues.remove(s);
if (remainValues.isEmpty()) {
break;
}
}
}
if (lines.length() > textDecorationLine.length()) {
inlineStyle.setProperty(HtmlConstants.CSS_TEXT_DECORATION_LINE, lines.toString(), null);
}
}
}
inlineStyles.push(new InlineStyle(inlineStyle, block));
}
/**
* 行内样式出栈
*/
public void popInlineStyle() {
fontSizesInHalfPoints.pop();
inlineStyles.pop();
}
/**
* 当前元素的样式声明，在HTML元素渲染开始时立即调用才可得到正确的声明，因为在解析的过程中可能会动态插入样式
*
* @return 当前元素的样式声明
*/
public CSSStyleDeclarationImpl currentElementStyle() {
InlineStyle inlineStyle = inlineStyles.peek();
return inlineStyle == null ? CSSStyleUtils.EMPTY_STYLE : inlineStyle.getDeclaration();
}
/**
* 获取样式值，将被转换为小写
*
* @param property 样式名称
* @return 样式值，未声明时返回空字符串
*/
public String getPropertyValue(String property) {
return getPropertyValue(property, false);
}
/**
* 获取样式值，将被转换为小写
*
* @param property 样式名称
* @param inlineOnly 是否仅获取行内元素样式
* @return 样式值，未声明时返回空字符串
*/
public String getPropertyValue(String property, boolean inlineOnly) {
return getPropertyValue(property, false, inlineOnly);
}
/**
* 获取样式值
*
* @param property 样式名称
* @param caseSensitive 是否大小写无关，如果无关则将转换为小写，否则保留原始值
* @param inlineOnly 是否仅获取行内元素样式
* @return 样式值，未声明时返回空字符串
*/
public String getPropertyValue(String property, boolean caseSensitive, boolean inlineOnly) {
for (InlineStyle inlineStyle : inlineStyles) {
if (inlineOnly && inlineStyle.isBlock()) {
break;
}
String propertyValue = inlineStyle.getDeclaration().getPropertyValue(property);
if (StringUtils.isNotBlank(propertyValue)) {
return caseSensitive ? propertyValue : propertyValue.toLowerCase();
}
}
return "";
}
/**
* @return Word中设置的默认字号
*/
public CSSLength getDefaultFontSize() {
return defaultFontSize;
}
/**
* @return 获取当前元素继承的字号，以“半点”为单位
*/
public int getInheritedFontSizeInHalfPoints() {
for (Integer fontSize : fontSizesInHalfPoints) {
if (fontSize > 0) {
return fontSize;
}
}
return defaultFontSize.toHalfPoints();
}
/**
* @return 父容器的可用宽度，以EMU为单位
*/
public int getAvailableWidthInEMU() {
IBody container = getContainer();
if (container.getPartType() == BodyType.DOCUMENT) {
return availablePageWidth;
} else {
return RenderUtils.getAvailableWidthInEMU(container);
}
}
/**
* 考虑约束计算长度，以EMU为单位
*
* @param length 长度声明
* @param maxLength 最大长度声明
* @param naturalEMU 原始长度
* @param parentEMU 父容器长度
* @return 以EMU为单位的长度值
*/
public int computeLengthInEMU(String length, String maxLength, int naturalEMU, int parentEMU) {
int emu = naturalEMU;
if (length.length() > 0) {
CSSLength cssLength = CSSLength.of(length);
if (cssLength.isValid()) {
emu = computeLengthInEMU(cssLength, naturalEMU, parentEMU);
}
}
if (maxLength.length() > 0) {
CSSLength cssLength = CSSLength.of(maxLength);
if (cssLength.isValid()) {
int maxEMU = computeLengthInEMU(cssLength, naturalEMU, parentEMU);
emu = Math.min(maxEMU, emu);
}
}
return Math.min(emu, parentEMU);
}
/**
* 考虑约束计算长度，以EMU为单位
*
* @param cssLength 长度声明
* @param naturalEMU 原始长度
* @param parentEMU 父容器长度
* @return 以EMU为单位的长度值
*/
public int computeLengthInEMU(CSSLength cssLength, int naturalEMU, int parentEMU) {
int length;
if (cssLength.getUnit() == CSSLengthUnit.PERCENT) {
if (parentEMU != Integer.MAX_VALUE) {
length = (int) (parentEMU * cssLength.getValue() * cssLength.getUnit().absoluteFactor());
} else {
length = naturalEMU;
}
} else {
length = lengthToEMU(cssLength);
}
return length;
}
/**
* 渲染文本
*
* @param text 文本
*/
public void renderText(String text) {
String whiteSpace = getPropertyValue(HtmlConstants.CSS_WHITE_SPACE);
WhiteSpaceRule rule = WhiteSpaceRule.of(whiteSpace, WhiteSpaceRule.NORMAL);
StringBuilder sb = StringUtil.borrowBuilder();
boolean mergeWhitespace = false;
// https://en.wikipedia.org/wiki/List_of_XML_and_HTML_character_entity_references
int len = text.length();
int c;
if (!rule.isKeepTrailingSpace()) {
boolean reachedLastNonWhite = false;
for (int i = len - 1; i >= 0; i -= Character.charCount(c)) {
c = text.codePointAt(i);
switch (c) {
case ' ':
case '\r':
case '\n':
case '\t':
case 173: // soft hyphen
case 8203: // zero width space
case 8204: // zero width non-joiner
case 8205: // zero width joiner
case 8206: // lrm
case 8207: // rlm
case 8288: // word joiner
case 8289: // apply function
case 8290: // invisible times
case 8291: // invisible separator
len = i;
break;
default:
if (Character.getType(c) == 16) {
len = i;
} else {
reachedLastNonWhite = true;
}
break;
}
if (reachedLastNonWhite) {
break;
}
}
}
if (len == 0) {
return;
}
boolean endTrimmed = len < text.length();
CTR ctr = newRun();
for (int i = 0; i < len; i += Character.charCount(c)) {
c = text.codePointAt(i);
switch (c) {
case '\r':
if (i + 1 < len && text.codePointAt(i + 1) == '\n') {
continue;
}
if (rule.isKeepLineBreak()) {
addText(ctr, sb, false);
ctr.addNewCr();
} else {
mergeWhitespace = true;
}
break;
case '\n':
if (rule.isKeepLineBreak()) {
addText(ctr, sb, false);
ctr.addNewBr();
} else {
mergeWhitespace = true;
}
break;
case ' ':
if (rule.isKeepSpaceAndTab()) {
sb.appendCodePoint(c);
} else {
mergeWhitespace = true;
}
break;
case '\t':
if (rule.isKeepSpaceAndTab()) {
addText(ctr, sb, false);
ctr.addNewTab();
} else {
mergeWhitespace = true;
}
break;
case 160: // nbsp
case 8192: // enquad
case 8193: // emquad
case 8194: // ensp
case 8195: // emsp
case 8196: // emsp13
case 8197: // emsp14
case 8199: // numsp
case 8200: // puncsp
case 8201: // thinsp
case 8202: // hairsp
case 8239: // narrow space
case 8287: // medium space
if (mergeWhitespace) {
sb.append(' ');
mergeWhitespace = false;
}
sb.append(' ');
break;
case 173: // soft hyphen
case 8203: // zero width space
case 8204: // zero width non-joiner
case 8205: // zero width joiner
case 8206: // lrm
case 8207: // rlm
case 8288: // word joiner
case 8289: // apply function
case 8290: // invisible times
case 8291: // invisible separator
continue;
default:
if (Character.getType(c) == 16) {
continue;
}
if (mergeWhitespace) {
sb.append(' ');
mergeWhitespace = false;
}
sb.appendCodePoint(c);
if (previousText != null && previousText.isEndTrimmed()) {
CTText previous = previousText.getText();
previous.setStringValue(previous.getStringValue() + ' ');
previous.setSpace(SpaceAttribute.Space.PRESERVE);
previousText = null;
}
break;
}
}
addText(ctr, sb, endTrimmed);
StringUtil.releaseBuilder(sb);
// 应用样式
applyTextStyle(ctr);
if (!(currentRun instanceof XWPFHyperlinkRun)) {
currentRun = null;
}
}
private void addText(CTR ctr, StringBuilder sb, boolean endTrimmed) {
if (sb.length() > 0) {
CTText ctText = ctr.addNewT();
String text = sb.toString();
ctText.setStringValue(text);
if (text.charAt(0) == ' ' || text.charAt(sb.length() - 1) == ' ') {
ctText.setSpace(SpaceAttribute.Space.PRESERVE);
}
sb.delete(0, sb.length());
previousText = new TextWrapper(ctText, endTrimmed);
}
}
/**
* 应用文本样式
*
* @param ctr CTR
*/
private void applyTextStyle(CTR ctr) {
CTRPr rPr = RenderUtils.getRPr(ctr);
// 字体，如果声明了全局字体则忽略样式声明
String fontFamily = StringUtils.isBlank(globalFont) ? getPropertyValue(HtmlConstants.CSS_FONT_FAMILY) : globalFont;
if (StringUtils.isNotBlank(fontFamily)) {
CTFonts ctFonts = rPr.addNewRFonts();
// ASCII
ctFonts.setAscii(fontFamily);
// High ANSI
ctFonts.setHAnsi(fontFamily);
// Complex Script
ctFonts.setCs(fontFamily);
// East Asian
ctFonts.setEastAsia(fontFamily);
}
// 字号
if (globalFontSize == null) {
String fontSize = getPropertyValue(HtmlConstants.CSS_FONT_SIZE);
if (StringUtils.isNotBlank(fontSize)) {
int sz = getInheritedFontSizeInHalfPoints();
rPr.addNewSz().setVal(BigInteger.valueOf(sz));
}
} else {
// 如果定义了全局字号则忽略样式声明
rPr.addNewSz().setVal(globalFontSize);
}
// 加粗
String fontWeight = getPropertyValue(HtmlConstants.CSS_FONT_WEIGHT);
if (fontWeight.contains(HtmlConstants.BOLD)) {
rPr.addNewB();
} else if (NumberUtils.isParsable(fontWeight) && Float.parseFloat(fontWeight) > 500) {
rPr.addNewB();
}
// 斜体
String fontStyle = getPropertyValue(HtmlConstants.CSS_FONT_STYLE);
if (HtmlConstants.ITALIC.equals(fontStyle) || HtmlConstants.OBLIQUE.equals(fontStyle)) {
rPr.addNewI();
}
// 颜色
String color = getPropertyValue(HtmlConstants.CSS_COLOR);
if (StringUtils.isNotBlank(color)) {
String hex = Colors.fromStyle(color);
RenderUtils.getColor(rPr).setVal(hex);
}
String caps = getPropertyValue(HtmlConstants.CSS_FONT_VARIANT_CAPS);
if (HtmlConstants.SMALL_CAPS.equals(caps)) {
rPr.addNewSmallCaps();
}
// 中划线/下划线
String textDecoration = getPropertyValue(HtmlConstants.CSS_TEXT_DECORATION_LINE);
if (HtmlConstants.NONE.equals(textDecoration)) {
RenderUtils.getUnderline(rPr).setVal(STUnderline.NONE);
} else {
if (StringUtils.contains(textDecoration, HtmlConstants.LINE_THROUGH)) {
rPr.addNewStrike();
}
if (StringUtils.contains(textDecoration, HtmlConstants.UNDERLINE)) {
CTUnderline ctUnderline = RenderUtils.getUnderline(rPr);
String textDecorationStyle = getPropertyValue(HtmlConstants.CSS_TEXT_DECORATION_STYLE);
ctUnderline.setVal(RenderUtils.underline(textDecorationStyle));
String textDecorationColor = getPropertyValue(HtmlConstants.CSS_TEXT_DECORATION_COLOR);
if (StringUtils.isNotBlank(textDecorationColor)) {
String hex = Colors.fromStyle(textDecorationColor);
ctUnderline.setColor(hex);
}
}
}
// 上下标
String verticalAlign = getPropertyValue(HtmlConstants.CSS_VERTICAL_ALIGN);
if (HtmlConstants.SUPER.equals(verticalAlign)) {
rPr.addNewVertAlign().setVal(STVerticalAlignRun.SUPERSCRIPT);
} else if (HtmlConstants.SUB.equals(verticalAlign)) {
rPr.addNewVertAlign().setVal(STVerticalAlignRun.SUBSCRIPT);
}
// FIXME 段落边框与行内边框分离，行内只有全边框，段落分四边
// 背景色
String backgroundColor = getPropertyValue(HtmlConstants.CSS_BACKGROUND_COLOR, true);
if (StringUtils.isNotBlank(backgroundColor)) {
String hex = Colors.fromStyle(backgroundColor, null);
if (hex != null) {
CTShd ctShd = rPr.addNewShd();
ctShd.setFill(hex);
ctShd.setVal(STShd.CLEAR);
}
}
// 可见性
String visibility = getPropertyValue(HtmlConstants.CSS_VISIBILITY);
if (HtmlConstants.HIDDEN.equals(visibility) || HtmlConstants.COLLAPSE.equals(visibility)) {
rPr.addNewVanish();
}
}
/**
* 渲染图片
*
* @param pictureData 图片数据流
* @param pictureType 图片类型
* @param filename 文件名
* @param width 宽度
* @param height 高度
* @param svgData SVG数据
*/
public void renderPicture(InputStream pictureData, int pictureType, String filename, int width, int height, byte[] svgData)
throws IOException, InvalidFormatException {
CTR ctr = newRun();
XWPFPicture xwpfPicture = currentRun.addPicture(pictureData, pictureType, filename, width, height);
CTR r = currentRun.getCTR();
boolean isSvg = svgData != null;
if (isSvg) {
attachSvgData(xwpfPicture, svgData);
}
CSSStyleDeclarationImpl styleDeclaration = currentElementStyle();
String cssFloat = styleDeclaration.getPropertyValue(HtmlConstants.CSS_FLOAT);
boolean floatLeft = HtmlConstants.LEFT.equals(cssFloat);
boolean floatRight = !floatLeft && HtmlConstants.RIGHT.equals(cssFloat);
// vertical-align seems not working
boolean floated = floatLeft || floatRight;
CTDrawing drawing = null;
if (r != ctr) {
int lastDrawingIndex = r.sizeOfDrawingArray() - 1;
drawing = r.getDrawingArray(lastDrawingIndex);
ctr.setDrawingArray(new CTDrawing[]{drawing});
r.removeDrawing(lastDrawingIndex);
drawing = ctr.getDrawingArray(0);
} else if (isSvg || floated) {
drawing = ctr.getDrawingArray(ctr.sizeOfDrawingArray() - 1);
}
if (drawing != null && drawing.sizeOfInlineArray() > 0) {
if (floated) {
CTAnchor ctAnchor = RenderUtils.inlineToAnchor(drawing);
CTPosH ctPosH = ctAnchor.addNewPositionH();
ctPosH.setRelativeFrom(STRelFromH.MARGIN);
ctPosH.setAlign(floatRight ? STAlignH.RIGHT : STAlignH.LEFT);
CTPosV ctPosV = ctAnchor.addNewPositionV();
ctPosV.setRelativeFrom(STRelFromV.PARAGRAPH);
ctPosV.setAlign(STAlignV.TOP);
if (isSvg) {
CTNonVisualGraphicFrameProperties properties = ctAnchor.addNewCNvGraphicFramePr();
CTGraphicalObjectFrameLocking frameLocking = properties.addNewGraphicFrameLocks();
frameLocking.setNoChangeAspect(true);
}
} else if (isSvg) {
CTInline ctInline = drawing.getInlineArray(0);
CTNonVisualGraphicFrameProperties properties = ctInline.isSetCNvGraphicFramePr()
? ctInline.getCNvGraphicFramePr() : ctInline.addNewCNvGraphicFramePr();
CTGraphicalObjectFrameLocking frameLocking = properties.isSetGraphicFrameLocks()
? properties.getGraphicFrameLocks() : properties.addNewGraphicFrameLocks();
frameLocking.setNoChangeAspect(true);
}
}
}
/**
* 附加SVG数据
*
* @param xwpfPicture 图片
* @param svgData SVG数据
* @throws InvalidFormatException 非法格式
*/
private void attachSvgData(XWPFPicture xwpfPicture, byte[] svgData) throws InvalidFormatException {
CTPicture ctPicture = xwpfPicture.getCTPicture();
String svgRelId = getXWPFDocument().addPictureData(svgData, SVGPictureData.PICTURE_TYPE_SVG);
CTBlip blip = ctPicture.getBlipFill().getBlip();
if (blip != null) {
CTOfficeArtExtensionList extList = blip.isSetExtLst() ? blip.getExtLst() : blip.addNewExtLst();
CTOfficeArtExtension svgBitmap = extList.addNewExt();
svgBitmap.setUri(SVGRelation.SVG_URI);
XmlCursor cur = svgBitmap.newCursor();
cur.toEndToken();
cur.beginElement(SVGRelation.SVG_QNAME);
cur.insertNamespace(SVGRelation.SVG_PREFIX, SVGRelation.MS_SVG_NS);
cur.insertAttributeWithValue(SVGRelation.EMBED_TAG, svgRelId);
cur.dispose();
}
}
/**
* 将长度换算为EMU
*
* @param length 长度
* @return EMU
*/
public int lengthToEMU(CSSLength length) {
if (!length.isValid()) {
throw new UnsupportedOperationException("Invalid CSS length");
}
if (!length.getUnit().isRelative()) {
return length.toEMU();
}
double emu;
switch (length.getUnit()) {
case REM:
emu = length.unitValue() * getDefaultFontSize().toEMU();
break;
case EM:
emu = length.unitValue() * getInheritedFontSizeInHalfPoints() * Units.EMU_PER_POINT / 2;
break;
case VW:
emu = length.unitValue() * getPageWidth().toEMU();
break;
case VH:
emu = length.unitValue() * getPageHeight().toEMU();
break;
case VMIN:
emu = length.unitValue() * Math.min(getPageWidth().toEMU(), getPageHeight().toEMU());
break;
case VMAX:
emu = length.unitValue() * Math.max(getPageWidth().toEMU(), getPageHeight().toEMU());
break;
// Unable to determine the use of width or height as a relative length for percent unit
default:
throw new UnsupportedOperationException("Can not convert to EMU with length: " + length);
}
return (int) Math.rint(emu);
}
public NumberingContext getNumberingContext() {
return numberingContext;
}
public CSSLength getPageWidth() {
return pageWidth;
}
public CSSLength getPageHeight() {
return pageHeight;
}
public CSSLength getMarginTop() {
return marginTop;
}
public CSSLength getMarginRight() {
return marginRight;
}
public CSSLength getMarginBottom() {
return marginBottom;
}
public CSSLength getMarginLeft() {
return marginLeft;
}
public int getAvailablePageWidth() {
return availablePageWidth;
}
public int getAvailablePageHeight() {
return availablePageHeight;
}
public XWPFRun getCurrentRun() {
return currentRun;
}
public String getGlobalFont() {
return globalFont;
}
public BigInteger getGlobalFontSize() {
return globalFontSize;
}
public boolean isShowDefaultTableBorderInTableCell() {
return showDefaultTableBorderInTableCell;
}
public void setShowDefaultTableBorderInTableCell(boolean showDefaultTableBorderInTableCell) {
this.showDefaultTableBorderInTableCell = showDefaultTableBorderInTableCell;
}
public void setGlobalFont(String globalFont) {
this.globalFont = globalFont;
}
public void setGlobalFontSize(BigInteger globalFontSize) {
this.globalFontSize = globalFontSize;
}
public boolean isBlocked() {
return blockLevel > 0;
}
public void incrementBlockLevel() {
blockLevel++;
}
public void decrementBlockLevel() {
blockLevel--;
}
public void renderDocument(Document document) {
Element body = document.body();
Element html = body.parent();
if (html.hasAttr(HtmlConstants.ATTR_STYLE)) {
pushInlineStyle(getCssStyleDeclaration(html), html.isBlock());
}
if (body.hasAttr(HtmlConstants.ATTR_STYLE)) {
pushInlineStyle(getCssStyleDeclaration(body), body.isBlock());
}
for (Node node : body.childNodes()) {
renderNode(node);
}
}
public void renderNode(Node node) {
boolean isElement = node instanceof Element;
if (isElement) {
Element element = ((Element) node);
renderElement(element);
} else if (node instanceof TextNode) {
renderText(((TextNode) node).getWholeText());
}
}
public void renderElement(Element element) {
if (log.isDebugEnabled()) {
log.info("Start rendering html tag: <{}{}>", element.normalName(), element.attributes());
}
if (element.tag().isFormListed() || element.tag().isFormSubmittable()) {
return;
}
CSSStyleDeclarationImpl cssStyleDeclaration = getCssStyleDeclaration(element);
String display = cssStyleDeclaration.getPropertyValue(HtmlConstants.CSS_DISPLAY);
if (HtmlConstants.NONE.equalsIgnoreCase(display)) {
return;
}
pushInlineStyle(cssStyleDeclaration, element.isBlock());
ElementRenderer elementRenderer = rendererProvider.get(element.normalName());
boolean blocked = false;
if (renderAsBlock(element, elementRenderer)) {
if (element.childNodeSize() == 0 && !HtmlConstants.KEEP_EMPTY_TAGS.contains(element.normalName())) {
popInlineStyle();
return;
}
if (!isBlocked()) {
// 复制段落中占位符之前的部分内容
moveContentToNewPrevParagraph();
}
incrementBlockLevel();
blocked = true;
IBody container = getContainer();
boolean isTableTag = HtmlConstants.TAG_TABLE.equals(element.normalName());
adjustCursor(container, isTableTag);
if (isTableTag) {
globalCursor.push();
XWPFTable xwpfTable = container.insertNewTbl(globalCursor);
globalCursor.pop();
if (dedupeParagraph != null && !numberingContext.contains(dedupeParagraph)) {
if (!dedupeParagraph.equals(getRun().getParent()) && isEmptyParagraph(dedupeParagraph)) {
removeParagraph(container, dedupeParagraph);
}
unmarkDedupe();
}
// 新增时会自动创建一行一列，会影响自定义的表格渲染逻辑，故删除
xwpfTable.removeRow(0);
if (container.getPartType() == BodyType.TABLECELL && isShowDefaultTableBorderInTableCell()) {
CTTbl ctTbl = xwpfTable.getCTTbl();
CTTblPr tblPr = RenderUtils.getTblPr(ctTbl);
CTTblBorders tblBorders = RenderUtils.getTblBorders(tblPr);
tblBorders.addNewTop().setVal(STBorder.SINGLE);
tblBorders.addNewLeft().setVal(STBorder.SINGLE);
tblBorders.addNewBottom().setVal(STBorder.SINGLE);
tblBorders.addNewRight().setVal(STBorder.SINGLE);
tblBorders.addNewInsideH().setVal(STBorder.SINGLE);
tblBorders.addNewInsideV().setVal(STBorder.SINGLE);
}
RenderUtils.tableStyle(this, xwpfTable, cssStyleDeclaration);
} else if (shouldNewParagraph(element)) {
globalCursor.push();
XWPFParagraph xwpfParagraph = newParagraph(container, globalCursor);
globalCursor.pop();
if (xwpfParagraph == null) {
log.warn("Can not add new paragraph for element: {}, attributes: {}", element.tagName(), element.attributes().html());
}
RenderUtils.paragraphStyle(this, xwpfParagraph, cssStyleDeclaration);
}
}
if (elementRenderer != null) {
if (!elementRenderer.renderStart(element, this)) {
renderElementEnd(element, this, elementRenderer, blocked);
return;
}
}
for (Node child : element.childNodes()) {
renderNode(child);
}
renderElementEnd(element, this, elementRenderer, blocked);
}
private boolean isEmptyParagraph(XWPFParagraph paragraph) {
for (XWPFRun run : paragraph.getRuns()) {
if (StringUtils.isNotBlank(run.text())) {
return false;
}
if (!run.getEmbeddedPictures().isEmpty()) {
return false;
}
}
CTP ctp = paragraph.getCTP();
return ctp.sizeOfOMathArray() == 0 && ctp.sizeOfOMathParaArray() == 0;
}
private void removeParagraph(IBody container, XWPFParagraph paragraph) {
switch (container.getPartType()) {
case CONTENTCONTROL:
break;
case DOCUMENT:
XWPFDocument xwpfDocument = (XWPFDocument) container;
int posOfParagraph = xwpfDocument.getPosOfParagraph(paragraph);
xwpfDocument.removeBodyElement(posOfParagraph);
break;
case HEADER:
XWPFHeader xwpfHeader = (XWPFHeader) container;
xwpfHeader.removeParagraph(paragraph);
break;
case FOOTER:
XWPFFooter xwpfFooter = (XWPFFooter) container;
xwpfFooter.removeParagraph(paragraph);
break;
case FOOTNOTE:
XWPFFootnote xwpfFootnote = (XWPFFootnote) container;
xwpfFootnote.getParagraphs().remove(paragraph);
break;
case TABLECELL:
XWPFTableCell xwpfTableCell = (XWPFTableCell) container;
xwpfTableCell.removeParagraph(xwpfTableCell.getParagraphs().indexOf(paragraph));
break;
}
}
/**
* HTML元素是否按照块状进行渲染
*
* @param element HTML元素
* @return 是否按照块状进行渲染
*/
public boolean renderAsBlock(Element element) {
return renderAsBlock(element, rendererProvider.get(element.normalName()));
}
/**
* HTML元素是否按照块状进行渲染
*
* @param element HTML元素
* @param elementRenderer 元素渲染器
* @return 是否按照块状进行渲染
*/
private boolean renderAsBlock(Element element, ElementRenderer elementRenderer) {
return element.isBlock() && (elementRenderer == null || elementRenderer.renderAsBlock());
}
private boolean shouldNewParagraph(Element element) {
return dedupeParagraph == null;
}
private void adjustCursor(IBody container, boolean isTableTag) {
if (globalCursor.getObject() instanceof CTR) {
globalCursor.push();
globalCursor.toParent();
}
globalCursor.push();
// 如果是表格，检查当前word容器的前一个兄弟元素是否为表格，是则插入一个段落，防止表格粘连在一起
if (isTableTag && globalCursor.toPrevSibling()) {
if (globalCursor.getObject() instanceof CTTbl) {
// pop() is safer than toNextSibling()
globalCursor.pop();
globalCursor.push();
XWPFParagraph paragraph = newParagraph(container, globalCursor);
unmarkDedupe();
RenderUtils.paragraphStyle(this, paragraph, CSSStyleUtils.EMPTY_STYLE);
}
}
globalCursor.pop();
}
private void renderElementEnd(Element element, HtmlRenderContext context, ElementRenderer elementRenderer, boolean blocked) {
if (elementRenderer != null) {
elementRenderer.renderEnd(element, context);
}
context.popInlineStyle();
if (blocked) {
context.decrementBlockLevel();
}
}
private void moveContentToNewPrevParagraph() {
CTR ctr = getRun().getCTR();
XmlCursor rCursor = ctr.newCursor();
boolean hasPrevSibling = false;
while (rCursor.toPrevSibling()) {
XmlObject object = rCursor.getObject();
if (object instanceof CTMarkupRange) {
continue;
}
if (!(object instanceof CTPPr)) {
hasPrevSibling = true;
break;
}
}
if (!hasPrevSibling) {
rCursor.dispose();
return;
}
rCursor.toParent();
rCursor.push();
CTP ctp = ((CTP) rCursor.getObject());
XWPFParagraph paragraph = getContainer().getParagraph(ctp);
XWPFParagraph newParagraph = getContainer().insertNewParagraph(rCursor);
XmlCursor pCursor = newParagraph.getCTP().newCursor();
pCursor.toEndToken();
rCursor.pop();
rCursor.toFirstChild();
while (!ctr.equals(rCursor.getObject())) {
XmlObject obj = rCursor.getObject();
if (obj instanceof CTPPr) {
rCursor.copyXml(pCursor);
rCursor.toNextSibling();
} else if (obj instanceof CTBookmark) {
rCursor.toNextSibling();
} else {
// moveXml附带了toNextSibling的效果
rCursor.moveXml(pCursor);
}
}
rCursor.dispose();
pCursor.dispose();
XWPFParagraphRuns runs = new XWPFParagraphRuns(paragraph);
for (int i = runs.runCount() - ctp.getRList().size() - 1; i >= 0; i--) {
runs.remove(i);
}
}
public CSSStyleDeclarationImpl getCssStyleDeclaration(Element element) {
String style = element.attr(HtmlConstants.ATTR_STYLE);
CSSStyleDeclarationImpl cssStyleDeclaration = CSSStyleUtils.parse(style);
CSSStyleUtils.split(cssStyleDeclaration);
return cssStyleDeclaration;
}
/**
* 保存当前指针位置并移动到目标指针位置
*
* @param targetCursor 目标指针
*/
public void pushCursor(XmlCursor targetCursor) {
globalCursor.push();
globalCursor.toCursor(targetCursor);
}
/**
* 返回之前保存的指针位置
*
* @return 是否返回成功
*/
public boolean popCursor() {
return globalCursor.pop();
}
/**
* @return 指针当前指向的对象
*/
public XmlObject currentCursorObject() {
return globalCursor.getObject();
}
/**
* 标记段落以防止块状元素嵌套产生多余的空段落
*
* @param paragraph 段落
*/
public void markDedupe(XWPFParagraph paragraph) {
dedupeParagraph = paragraph;
}
/**
* 取消段落防重标记
*/
public void unmarkDedupe() {
dedupeParagraph = null;
}
/**
* 文本封装类，用于空白字符折叠处理
*/
private static class TextWrapper {
private final CTText text;
private final boolean endTrimmed;
public TextWrapper(CTText text, boolean endTrimmed) {
this.text = text;
this.endTrimmed = endTrimmed;
}
public CTText getText() {
return text;
}
public boolean isEndTrimmed() {
return endTrimmed;
}
}
}
