OpenOffice/LibreOffice的行距问题

本文详细介绍了如何通过设置格式->页面->文字网格->不使用网格来调整OpenOffice和LibreOffice的默认行距,提供了解决文档格式问题的有效方法。

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OpenOffice和LibreOffice的默认行距(行间距)都很宽,可以通过以下方法设置.

格式 -> 页面 -> 文字网格 -> 不使用网格

转载于:https://www.cnblogs.com/live41/p/3316885.html

#include "docxtopdf.h" #include <QFile> #include <QTextStream> #include <QXmlStreamReader> #include <QPrinter> #include <QTextDocument> #include <QTextCursor> #include <QTextList> #include <QDebug> #include <quazip5/quazip.h> #include <quazip5/quazipfile.h> #include <QFileInfo> #include <QImageReader> #include <QPainter> #include <QPdfWriter> #include <QUuid> // XML namespaces const QString ns_w = "http://schemas.openxmlformats.org/wordprocessingml/2006/main"; const QString ns_r1 = "http://schemas.openxmlformats.org/officeDocument/2006/relationships"; const QString ns_r2 = "http://schemas.openxmlformats.org/package/2006/relationships"; const QString ns_wp = "http://schemas.openxmlformats.org/drawingml/2006/wordprocessingDrawing"; const QString ns_a = "http://schemas.openxmlformats.org/drawingml/2006/main"; const QString ns_pic = "http://schemas.openxmlformats.org/drawingml/2006/picture"; DocxToPdfConverter::DocxToPdfConverter(QObject *parent) : QObject(parent) { } bool DocxToPdfConverter::convert(const QString &inputPath, const QString &outputPath) { // Reset state m_paragraphs.clear(); m_styles.clear(); m_imageRelations.clear(); m_extractedImages.clear(); m_numberingFormats.clear(); m_pageSettings.clear(); m_currentPageSettingIndex = 0; m_lastError.clear(); // Step 1: Extract and parse all necessary files from DOCX if (!extractContentFromDocx(inputPath)) { emit errorOccurred(m_lastError); return false; } // Step 2: Render to PDF if (!renderToPdf(outputPath)) { emit errorOccurred(m_lastError); return false; } emit conversionFinished(true); return true; } QString DocxToPdfConverter::lastError() const { return m_lastError; } bool DocxToPdfConverter::extractContentFromDocx(const QString &docxPath) { QuaZip zip(docxPath); if (!zip.open(QuaZip::mdUnzip)) { m_lastError = "Failed to open DOCX file as ZIP archive"; return false; } // Parse relationships first to find all images if (zip.setCurrentFile("word/_rels/document.xml.rels")) { QuaZipFile relsFile(&zip); if (relsFile.open(QIODevice::ReadOnly)) { parseRelationships(relsFile.readAll()); relsFile.close(); } } // Parse styles if (zip.setCurrentFile("word/styles.xml")) { QuaZipFile stylesFile(&zip); if (stylesFile.open(QIODevice::ReadOnly)) { parseStylesXml(stylesFile.readAll()); stylesFile.close(); } } // Parse numbering (lists) if (zip.setCurrentFile("word/numbering.xml")) { QuaZipFile numberingFile(&zip); if (numberingFile.open(QIODevice::ReadOnly)) { parseNumberingXml(numberingFile.readAll()); numberingFile.close(); } } // Parse main document content if (!zip.setCurrentFile("word/document.xml")) { m_lastError = "Could not find document.xml in DOCX archive"; zip.close(); return false; } QuaZipFile documentFile(&zip); if (!documentFile.open(QIODevice::ReadOnly)) { m_lastError = "Could not open document.xml in DOCX archive"; zip.close(); return false; } bool extractResult = extractImages(docxPath); // 提前执行 if (!extractResult) { zip.close(); return false; } bool result = parseDocumentXml(documentFile.readAll()); documentFile.close(); // // Extract images // if (result) { // result = extractImages(docxPath); // } zip.close(); return result; } bool DocxToPdfConverter::parseDocumentXml(const QByteArray &xmlData) { QXmlStreamReader xml(xmlData); Paragraph currentPara; TextRun currentRun; bool inParagraph = false; bool inRun = false; bool inDrawing = false; bool inSectionProperties = false; QString currentImageId; // Add default page settings (A4 with 1 inch margins) PageSettings defaultPage; defaultPage.size = QPageSize(QPageSize::A4).size(QPageSize::Point); defaultPage.margins = QMarginsF(72, 72, 72, 72); // 1 inch margins m_pageSettings.append(defaultPage); while (!xml.atEnd() && !xml.hasError()) { xml.readNext(); if (xml.isStartElement()) { if (xml.namespaceUri() == ns_w) { if (xml.name() == "p") { inParagraph = true; currentPara = Paragraph(); } else if (inParagraph && xml.name() == "r") { inRun = true; currentRun = TextRun(); } else if (inRun && xml.name() == "rPr") { // Run properties (formatting) while (xml.readNextStartElement()) { if (xml.namespaceUri() != ns_w) { xml.skipCurrentElement(); continue; } if (xml.name() == "sz") { int halfPoints = getXmlAttribute(xml.attributes(), "val", ns_w).toInt(); // 确保最小字号为6pt,最大为72pt qreal fontSize = qBound(6.0, halfPoints / 2.0, 72.0); currentRun.charFormat.setFontPointSize(fontSize); xml.skipCurrentElement(); } else if (xml.name() == "color") { QString color = getXmlAttribute(xml.attributes(), "val", ns_w); if (!color.isEmpty()) { //currentRun.charFormat.setForeground(QColor("#" + color)); if (color == "auto") { currentRun.charFormat.setForeground(Qt::black); // 默认黑色 } else { // 支持RGB颜色和主题颜色 QColor qcolor; if (color.startsWith("FF")) { // 处理ABGR格式 color = color.mid(2); qcolor = QColor("#" + color.mid(4,2) + color.mid(2,2) + color.left(2)); } else { qcolor = QColor("#" + color); } if (qcolor.isValid()) { currentRun.charFormat.setForeground(qcolor); } } } xml.skipCurrentElement(); } else if (xml.name() == "b") { currentRun.charFormat.setFontWeight(QFont::Bold); xml.skipCurrentElement(); } else if (xml.name() == "i") { currentRun.charFormat.setFontItalic(true); xml.skipCurrentElement(); } else if (xml.name() == "u") { QString underline = getXmlAttribute(xml.attributes(), "val", ns_w); if (underline != "none") { currentRun.charFormat.setFontUnderline(true); } xml.skipCurrentElement(); } else if (xml.name() == "rFonts") { QString font = getXmlAttribute(xml.attributes(), "ascii", ns_w); if (!font.isEmpty()) { currentRun.charFormat.setFontFamily(font); } xml.skipCurrentElement(); } else { xml.skipCurrentElement(); } } } else if (inRun && xml.name() == "t") { // Text content currentRun.text = xml.readElementText(); currentPara.runs.append(currentRun); } else if (inRun && xml.name() == "drawing") { // Start of drawing (image) inDrawing = true; currentImageId.clear(); // 确保每次处理新图片时清空ID } else if (inParagraph && xml.name() == "pPr") { // Paragraph properties while (xml.readNextStartElement()) { if (xml.namespaceUri() != ns_w) { xml.skipCurrentElement(); continue; } if (xml.name() == "pStyle") { QString styleId = getXmlAttribute(xml.attributes(), "val", ns_w); currentPara.styleName = styleId; if (m_styles.contains(styleId)) { currentPara.charFormat = m_styles[styleId]; } xml.skipCurrentElement(); } else if (xml.name() == "numPr") { currentPara.isList = true; xml.skipCurrentElement(); } else if (xml.name() == "pageBreakBefore") { currentPara.isPageBreak = true; xml.skipCurrentElement(); } else if (xml.name() == "spacing") { QString before = getXmlAttribute(xml.attributes(), "before", ns_w); QString after = getXmlAttribute(xml.attributes(), "after", ns_w); QString line = getXmlAttribute(xml.attributes(), "line", ns_w); QString lineRule = getXmlAttribute(xml.attributes(), "lineRule", ns_w); if (!before.isEmpty()) { currentPara.spacingBefore = twipsToPoints(before.toInt()); currentPara.blockFormat.setTopMargin(currentPara.spacingBefore); } if (!after.isEmpty()) { currentPara.spacingAfter = twipsToPoints(after.toInt()); currentPara.blockFormat.setBottomMargin(currentPara.spacingAfter); } if (!line.isEmpty()) { if (lineRule == "auto" || lineRule.isEmpty()) { // 自动行距 currentPara.lineHeight = line.toInt() / 240.0; // 240 = 12pt * 20twips/pt currentPara.blockFormat.setLineHeight(currentPara.lineHeight * 100, QTextBlockFormat::ProportionalHeight); } else if (lineRule == "exact") { // 固定行距 currentPara.lineHeight = twipsToPoints(line.toInt()); currentPara.blockFormat.setLineHeight(currentPara.lineHeight, QTextBlockFormat::FixedHeight); } else if (lineRule == "atLeast") { // 最小行距 currentPara.lineHeight = twipsToPoints(line.toInt()); currentPara.blockFormat.setLineHeight(currentPara.lineHeight, QTextBlockFormat::MinimumHeight); } } xml.skipCurrentElement(); } else if (xml.name() == "ind") { QString left = getXmlAttribute(xml.attributes(), "left", ns_w); QString right = getXmlAttribute(xml.attributes(), "right", ns_w); QString firstLine = getXmlAttribute(xml.attributes(), "firstLine", ns_w); if (!left.isEmpty()) currentPara.blockFormat.setLeftMargin(twipsToPoints(left.toInt())); if (!right.isEmpty()) currentPara.blockFormat.setRightMargin(twipsToPoints(right.toInt())); if (!firstLine.isEmpty()) { currentPara.blockFormat.setTextIndent(twipsToPoints(firstLine.toInt())); } xml.skipCurrentElement(); } else if (xml.name() == "jc") { QString align = getXmlAttribute(xml.attributes(), "val", ns_w); if (align == "center") { currentPara.blockFormat.setAlignment(Qt::AlignCenter); } else if (align == "right") { currentPara.blockFormat.setAlignment(Qt::AlignRight); } else if (align == "both") { currentPara.blockFormat.setAlignment(Qt::AlignJustify); } xml.skipCurrentElement(); } else if (xml.name() == "sectPr") { // Section properties (page settings) inSectionProperties = true; PageSettings pageSettings = m_pageSettings.last(); // Copy previous settings while (xml.readNextStartElement()) { if (xml.namespaceUri() != ns_w) { xml.skipCurrentElement(); continue; } if (xml.name() == "pgSz") { // Page size QString width = getXmlAttribute(xml.attributes(), "w", ns_w); QString height = getXmlAttribute(xml.attributes(), "h", ns_w); if (!width.isEmpty() && !height.isEmpty()) { pageSettings.size = QSizeF(twipsToPoints(width.toInt()), twipsToPoints(height.toInt())); } xml.skipCurrentElement(); } else if (xml.name() == "pgMar") { // Page margins QString top = getXmlAttribute(xml.attributes(), "top", ns_w); QString right = getXmlAttribute(xml.attributes(), "right", ns_w); QString bottom = getXmlAttribute(xml.attributes(), "bottom", ns_w); QString left = getXmlAttribute(xml.attributes(), "left", ns_w); if (!top.isEmpty()) pageSettings.margins.setTop(twipsToPoints(top.toInt())); if (!right.isEmpty()) pageSettings.margins.setRight(twipsToPoints(right.toInt())); if (!bottom.isEmpty()) pageSettings.margins.setBottom(twipsToPoints(bottom.toInt())); if (!left.isEmpty()) pageSettings.margins.setLeft(twipsToPoints(left.toInt())); xml.skipCurrentElement(); } else if (xml.name() == "type") { // Section break type QString type = getXmlAttribute(xml.attributes(), "val", ns_w); if (type == "nextPage") { currentPara.isSectionBreak = true; } xml.skipCurrentElement(); } else { xml.skipCurrentElement(); } } m_pageSettings.append(pageSettings); inSectionProperties = false; } else { xml.skipCurrentElement(); } } } } else if (xml.namespaceUri() == ns_a && xml.name() == "blip") { currentImageId = getXmlAttribute(xml.attributes(), "embed", ns_r2); if (!currentImageId.isEmpty()) { currentRun = TextRun(); // 重置运行 currentRun.isImage = true; currentRun.imageName = QString("image_%1").arg(currentImageId); } xml.skipCurrentElement(); } // else if (inDrawing && xml.namespaceUri() == ns_a && xml.name() == "blip") { // // Image reference // currentImageId = getXmlAttribute(xml.attributes(), "embed", ns_r2); // xml.skipCurrentElement(); // } else if (inDrawing && xml.namespaceUri() == ns_wp && xml.name() == "inline") { qreal widthEmu = 0, heightEmu = 0; while (xml.readNextStartElement()) { if (xml.namespaceUri() == ns_wp && xml.name() == "extent") { widthEmu = getXmlAttribute(xml.attributes(), "cx", ns_wp).toDouble(); heightEmu = getXmlAttribute(xml.attributes(), "cy", ns_wp).toDouble(); xml.skipCurrentElement(); } else { xml.skipCurrentElement(); } } // EMU 转磅(1英寸=914400 EMU=72磅) if (widthEmu > 0 && heightEmu > 0) { currentRun.imageSize = QSizeF(widthEmu / 12700, heightEmu / 12700); qDebug() << "Parsed image size from EMU:" << currentRun.imageSize << "pt"; } } } else if (xml.isEndElement()) { if (xml.namespaceUri() == ns_w) { if (xml.name() == "p" && inParagraph) { // 如果有图片ID但未处理,尝试绑定图片 if (!currentImageId.isEmpty() && m_extractedImages.contains(currentImageId)) { currentRun.isImage = true; currentRun.image = m_extractedImages[currentImageId]; currentPara.runs.append(currentRun); } // 保存段落 if (!currentPara.runs.isEmpty() || currentPara.isPageBreak) { m_paragraphs.append(currentPara); } inParagraph = false; } // if (xml.name() == "p" && inParagraph) { // // End of paragraph // if (!currentPara.runs.isEmpty() || currentPara.isPageBreak || currentPara.isSectionBreak) { // m_paragraphs.append(currentPara); // } // inParagraph = false; // } else if (xml.name() == "r" && inRun) { if (currentRun.isImage && !currentImageId.isEmpty() && m_extractedImages.contains(currentImageId)) { currentRun.image = m_extractedImages[currentImageId]; currentPara.runs.append(currentRun); qDebug() << "Added image run:" << currentImageId << "Size:" << currentRun.image.size(); } inRun = false; } } else if (xml.namespaceUri() == ns_w && xml.name() == "drawing") { // End of drawing (image) inDrawing = false; if (!currentImageId.isEmpty() && m_extractedImages.contains(currentImageId)) { currentRun.isImage = true; currentRun.image = m_extractedImages[currentImageId]; currentRun.imageName = QString("image_%1").arg(currentImageId); currentRun.imageSize = QSizeF( currentRun.image.width() / currentRun.image.dotsPerMeterX() * 72.0, currentRun.image.height() / currentRun.image.dotsPerMeterY() * 72.0 ); currentPara.runs.append(currentRun); } currentImageId.clear(); } } } if (xml.hasError()) { m_lastError = QString("XML parsing error: %1").arg(xml.errorString()); return false; } qDebug() << "=== Image Debug Info ==="; qDebug() << "Extracted images count:" << m_extractedImages.size(); qDebug() << "Image relationships:" << m_imageRelations; qDebug() << "Total paragraphs:" << m_paragraphs.size(); for (int i = 0; i < m_paragraphs.size(); ++i) { const Paragraph& para = m_paragraphs[i]; qDebug() << "Paragraph" << i << "runs:" << para.runs.size(); for (int j = 0; j < para.runs.size(); ++j) { if (para.runs[j].isImage) { qDebug() << " Run" << j << "is IMAGE, ID:" << para.runs[j].imageName; } } } return true; } bool DocxToPdfConverter::parseStylesXml(const QByteArray &xmlData) { QXmlStreamReader xml(xmlData); QString currentStyleId; QTextCharFormat currentFormat; while (!xml.atEnd() && !xml.hasError()) { xml.readNext(); if (xml.isStartElement() && xml.namespaceUri() == ns_w) { if (xml.name() == "style") { currentStyleId = getXmlAttribute(xml.attributes(), "styleId", ns_w); QString type = getXmlAttribute(xml.attributes(), "type", ns_w); if (type != "character" && type != "paragraph") { currentStyleId.clear(); } } else if (!currentStyleId.isEmpty() && xml.name() == "rPr") { while (xml.readNextStartElement()) { if (xml.namespaceUri() != ns_w) { xml.skipCurrentElement(); continue; } if (xml.name() == "sz") { int halfPoints = getXmlAttribute(xml.attributes(), "val", ns_w).toInt(); currentFormat.setFontPointSize(halfPoints / 2.0); xml.skipCurrentElement(); } else if (xml.name() == "color") { QString color = getXmlAttribute(xml.attributes(), "val", ns_w); if (!color.isEmpty()) { currentFormat.setForeground(QColor("#" + color)); } xml.skipCurrentElement(); } else if (xml.name() == "b") { currentFormat.setFontWeight(QFont::Bold); xml.skipCurrentElement(); } else if (xml.name() == "i") { currentFormat.setFontItalic(true); xml.skipCurrentElement(); } else if (xml.name() == "rFonts") { QString font = getXmlAttribute(xml.attributes(), "ascii", ns_w); if (!font.isEmpty()) { currentFormat.setFontFamily(font); } xml.skipCurrentElement(); } else { xml.skipCurrentElement(); } } } } else if (xml.isEndElement() && xml.namespaceUri() == ns_w) { if (xml.name() == "style" && !currentStyleId.isEmpty()) { m_styles[currentStyleId] = currentFormat; currentStyleId.clear(); currentFormat = QTextCharFormat(); } } } if (xml.hasError()) { m_lastError = QString("Styles XML parsing error: %1").arg(xml.errorString()); return false; } return true; } bool DocxToPdfConverter::parseNumberingXml(const QByteArray &xmlData) { QXmlStreamReader xml(xmlData); int currentNumId = -1; while (!xml.atEnd() && !xml.hasError()) { xml.readNext(); if (xml.isStartElement() && xml.namespaceUri() == ns_w) { if (xml.name() == "num") { currentNumId = getXmlAttribute(xml.attributes(), "numId", ns_w).toInt(); } else if (currentNumId != -1 && xml.name() == "numFmt") { QString format = getXmlAttribute(xml.attributes(), "val", ns_w); m_numberingFormats[currentNumId] = format; } } else if (xml.isEndElement() && xml.namespaceUri() == ns_w) { if (xml.name() == "num") { currentNumId = -1; } } } if (xml.hasError()) { m_lastError = QString("Numbering XML parsing error: %1").arg(xml.errorString()); return false; } return true; } bool DocxToPdfConverter::parseRelationships(const QByteArray &xmlData) { QXmlStreamReader xml(xmlData); const QString relNs = "http://schemas.openxmlformats.org/package/2006/relationships"; while (!xml.atEnd()) { xml.readNext(); if (xml.isStartElement() && xml.name() == "Relationship") { // 直接获取属性值(不依赖命名空间) QXmlStreamAttributes attrs = xml.attributes(); QString id = attrs.value("Id").toString(); QString target = attrs.value("Target").toString(); QString type = attrs.value("Type").toString(); // 检查是否是图片类型 if (type.contains("image") || type.endsWith("png", Qt::CaseInsensitive) || type.endsWith("jpg", Qt::CaseInsensitive) || type.endsWith("jpeg", Qt::CaseInsensitive)) { // 标准化路径 QString fullPath = "word/" + target; fullPath = fullPath.replace("\\", "/"); m_imageRelations[id] = fullPath; qDebug() << "Found image relationship: ID =" << id << "Path =" << fullPath << "Type =" << type; } } } if (xml.hasError()) { m_lastError = "Relationships XML error: " + xml.errorString(); return false; } return true; } bool DocxToPdfConverter::extractImages(const QString &docxPath) { QuaZip zip(docxPath); if (!zip.open(QuaZip::mdUnzip)) { m_lastError = "Failed to open DOCX file"; return false; } for (const auto &rel : m_imageRelations.keys()) { QString imagePath = m_imageRelations[rel]; if (!zip.setCurrentFile(imagePath)) { qDebug() << "Image not found:" << imagePath; continue; } QuaZipFile imageFile(&zip); if (!imageFile.open(QIODevice::ReadOnly)) { qDebug() << "Failed to open image:" << imagePath; continue; } QByteArray imageData = imageFile.readAll(); imageFile.close(); QImage image; if (image.loadFromData(imageData)) { // // 转换为不透明格式 // if (image.format() == QImage::Format_ARGB32) { // image = image.convertToFormat(QImage::Format_RGB32); // } // m_extractedImages[rel] = image; qDebug() << "Successfully loaded image:" << imagePath << "Size:" << image.size() << "Format:" << image.format(); // 确保图片有有效的DPI信息 if (image.dotsPerMeterX() <= 0 || image.dotsPerMeterY() <= 0) { image.setDotsPerMeterX(2835); // 72 DPI image.setDotsPerMeterY(2835); // 72 DPI } m_extractedImages[rel] = image; } else { qDebug() << "Failed to load image data:" << imagePath << "Data size:" << imageData.size(); // 创建占位图 QImage placeholder(300, 100, QImage::Format_RGB32); placeholder.fill(Qt::white); QPainter painter(&placeholder); painter.setPen(Qt::red); painter.drawText(10, 50, "Image Load Error"); painter.end(); m_extractedImages[rel] = placeholder; } } qDebug() << "Extracted images:" << m_extractedImages.keys(); zip.close(); return true; } bool DocxToPdfConverter::renderToPdf(const QString &outputPath) { QPrinter printer(QPrinter::HighResolution); printer.setOutputFormat(QPrinter::PdfFormat); printer.setOutputFileName(outputPath); applyCurrentPageSettings(printer); QTextDocument document; document.setPageSize(printer.pageRect(QPrinter::Point).size()); document.setDocumentMargin(0); // 使用边距控制 // 设置默认字体和文本选项 QFont defaultFont("Times New Roman", 12); document.setDefaultFont(defaultFont); QTextOption textOption; textOption.setAlignment(Qt::AlignLeft); textOption.setWrapMode(QTextOption::WordWrap); document.setDefaultTextOption(textOption); QTextCursor cursor(&document); for (const Paragraph &para : m_paragraphs) { // 处理分页和分段 if (para.isSectionBreak) { m_currentPageSettingIndex = qMin(m_currentPageSettingIndex + 1, m_pageSettings.size() - 1); applyCurrentPageSettings(printer); document.setPageSize(printer.pageRect(QPrinter::Point).size()); QTextBlockFormat breakFormat; breakFormat.setPageBreakPolicy(QTextFormat::PageBreak_AlwaysBefore); cursor.insertBlock(breakFormat); continue; } if (para.isPageBreak) { QTextBlockFormat breakFormat; breakFormat.setPageBreakPolicy(QTextFormat::PageBreak_AlwaysBefore); cursor.insertBlock(breakFormat); continue; } // 设置段落格式 QTextBlockFormat blockFormat = para.blockFormat; // 处理列表 if (para.isList) { QTextListFormat listFormat; listFormat.setIndent(para.listLevel + 1); listFormat.setStyle(QTextListFormat::ListDecimal); cursor.insertList(listFormat); } else { cursor.insertBlock(blockFormat); } // 添加文本运行 for (const TextRun &run : para.runs) { qDebug() << "run.isImage:" << run.isImage; if (run.isImage && !run.image.isNull()) { qDebug() << "存在图片"; // 1. 确保图片格式兼容PDF(ARGB32可能有问题,转换为RGB32) QImage compatibleImage = run.image; if (compatibleImage.format() == QImage::Format_ARGB32) { compatibleImage = compatibleImage.convertToFormat(QImage::Format_RGB32); } // 2. 直接使用内存资源(不依赖文件路径) QString resourceName = "img_" + QUuid::createUuid().toString(QUuid::WithoutBraces); document.addResource(QTextDocument::ImageResource, QUrl(resourceName), compatibleImage); // 3. 计算并设置图片尺寸(单位:磅) qreal widthPt = run.imageSize.width() > 0 ? run.imageSize.width() : 200; // 默认200磅 qreal heightPt = run.imageSize.height() > 0 ? run.imageSize.height() : widthPt * compatibleImage.height() / compatibleImage.width(); // 4. 限制图片不超过页面宽度 qreal maxWidth; if (m_currentPageSettingIndex < m_pageSettings.size()) { // 使用自定义的页面设置 const PageSettings &settings = m_pageSettings[m_currentPageSettingIndex]; maxWidth = printer.pageRect(QPrinter::Point).width() - settings.margins.left() - settings.margins.right(); } else { // 回退到打印机默认设置(单位:磅) QPageLayout layout = printer.pageLayout(); maxWidth = printer.pageRect(QPrinter::Point).width() - layout.margins().left() - layout.margins().right(); } if (widthPt > maxWidth) { heightPt = heightPt * (maxWidth / widthPt); widthPt = maxWidth; } // 5. 插入图片 QTextImageFormat imageFormat; imageFormat.setName(resourceName); imageFormat.setWidth(widthPt); imageFormat.setHeight(heightPt); cursor.insertImage(imageFormat); qDebug() << "Inserted image:" << resourceName << "Size (pt):" << widthPt << "x" << heightPt << "Original size:" << compatibleImage.size(); qDebug() << "Document image resources:" << document.resource(QTextDocument::ImageResource, QUrl()).isValid(); // 强制立即渲染(测试用) document.print(&printer); if (printer.printerState() == QPrinter::Error) { qDebug() << "PDF generation failed:"; } else { qDebug() << "PDF generated successfully at" << outputPath; } } else { // 合并格式并确保字体属性正确 QTextCharFormat format = para.charFormat; format.merge(run.charFormat); // 确保重要属性不被覆盖 if (run.charFormat.hasProperty(QTextFormat::FontFamily)) { format.setFontFamily(run.charFormat.fontFamily()); } if (run.charFormat.hasProperty(QTextFormat::FontPointSize)) { format.setFontPointSize(run.charFormat.fontPointSize()); } if (run.charFormat.hasProperty(QTextFormat::FontWeight)) { format.setFontWeight(run.charFormat.fontWeight()); } if (run.charFormat.hasProperty(QTextFormat::FontItalic)) { format.setFontItalic(run.charFormat.fontItalic()); } if (run.charFormat.hasProperty(QTextFormat::TextUnderlineStyle)) { format.setFontUnderline(run.charFormat.fontUnderline()); } if (run.charFormat.hasProperty(QTextFormat::ForegroundBrush)) { format.setForeground(run.charFormat.foreground()); } cursor.insertText(run.text, format); } } } // 渲染PDF document.print(&printer); if (printer.printerState() == QPrinter::Error) { //m_lastError = "Failed to generate PDF: " + printer.errorString(); return false; } return true; } QString DocxToPdfConverter::getXmlAttribute(const QXmlStreamAttributes &attrs, const QString &name, const QString &ns) { // 首先尝试使用指定命名空间 if (!ns.isEmpty()) { QString value = attrs.value(ns, name).toString(); if (!value.isEmpty()) return value; } // 然后尝试不使用命名空间 return attrs.value(name).toString(); } void DocxToPdfConverter::applyCurrentPageSettings(QPrinter &printer) { if (m_currentPageSettingIndex < m_pageSettings.size()) { const PageSettings &settings = m_pageSettings[m_currentPageSettingIndex]; // Find closest QPageSize QPageSize pageSize(settings.size, QPageSize::Point, "", QPageSize::ExactMatch); if (!pageSize.isValid()) { pageSize = QPageSize(settings.size, QPageSize::Point); } printer.setPageSize(pageSize); printer.setPageMargins(settings.margins, QPageLayout::Point); } } 当前代码的打印存在如下问题:cursor, ========== cshape: 0 cursor, size from XGetDefault: 24 cursor, size from ptrXcursorLibraryGetDefaultSize: 24 Found image relationship: ID = "rId6" Path = "word/media/sign20250805.102526_photo.png" Type = "http://schemas.openxmlformats.org/officeDocument/2006/relationships/image" Successfully loaded image: "word/media/sign20250805.102526_photo.png" Size: QSize(1232, 588) Format: QImage::Format_ARGB32 Extracted images: ("rId6") === Image Debug Info === Extracted images count: 1 Image relationships: QMap(("rId6", "word/media/sign20250805.102526_photo.png")) Total paragraphs: 25 Paragraph 0 runs: 7 Paragraph 1 runs: 3 Paragraph 2 runs: 3 Paragraph 3 runs: 15 Paragraph 4 runs: 5 Paragraph 5 runs: 10 Paragraph 6 runs: 8 Paragraph 7 runs: 6 Paragraph 8 runs: 8 Paragraph 9 runs: 4 Paragraph 10 runs: 5 Paragraph 11 runs: 4 Paragraph 12 runs: 4 Paragraph 13 runs: 2 Paragraph 14 runs: 2 Paragraph 15 runs: 2 Paragraph 16 runs: 2 Paragraph 17 runs: 1 Paragraph 18 runs: 1 Paragraph 19 runs: 24 Paragraph 20 runs: 1 Paragraph 21 runs: 7 Paragraph 22 runs: 2 Paragraph 23 runs: 1 Paragraph 24 runs: 12 run.isImage: false run.isImage: false run.isImage: false run.isImage: false run.isImage: false run.isImage: false run.isImage: false run.isImage: false run.isImage: false run.isImage: false run.isImage: false run.isImage: false run.isImage: false run.isImage: false run.isImage: false run.isImage: false run.isImage: false run.isImage: false run.isImage: false run.isImage: false run.isImage: false run.isImage: false run.isImage: false run.isImage: false run.isImage: false run.isImage: false run.isImage: false run.isImage: false run.isImage: false run.isImage: false run.isImage: false run.isImage: false run.isImage: false run.isImage: false run.isImage: false run.isImage: false run.isImage: false run.isImage: false run.isImage: false run.isImage: false run.isImage: false run.isImage: false run.isImage: false run.isImage: false run.isImage: false run.isImage: false run.isImage: false run.isImage: false run.isImage: false run.isImage: false run.isImage: false run.isImage: false run.isImage: false run.isImage: false run.isImage: false run.isImage: false run.isImage: false run.isImage: false run.isImage: false run.isImage: false run.isImage: false run.isImage: false run.isImage: false run.isImage: false run.isImage: false run.isImage: false run.isImage: false run.isImage: false run.isImage: false run.isImage: false run.isImage: false run.isImage: false run.isImage: false run.isImage: false run.isImage: false run.isImage: false run.isImage: false run.isImage: false run.isImage: false run.isImage: false run.isImage: false run.isImage: false run.isImage: false run.isImage: false run.isImage: false run.isImage: false run.isImage: false run.isImage: false run.isImage: false run.isImage: false run.isImage: false run.isImage: false run.isImage: false run.isImage: false run.isImage: false run.isImage: false run.isImage: false run.isImage: false run.isImage: false run.isImage: false run.isImage: false run.isImage: false run.isImage: false run.isImage: false run.isImage: false run.isImage: false run.isImage: false run.isImage: false run.isImage: false run.isImage: false run.isImage: false run.isImage: false run.isImage: false run.isImage: false run.isImage: false run.isImage: false run.isImage: false run.isImage: false run.isImage: false run.isImage: false run.isImage: false run.isImage: false run.isImage: false run.isImage: false run.isImage: false run.isImage: false run.isImage: false run.isImage: false run.isImage: false run.isImage: false run.isImage: false run.isImage: false run.isImage: false run.isImage: false run.isImage: false run.isImage: false run.isImage: false run.isImage: false run.isImage: false,还是依然转换之后不存在签名图片,如何解决
最新发布
08-07
<think>我们正在处理一个具体问题:DOCX转PDF时图片未正确嵌入,调试日志显示图片已加载但最终PDF中缺失。 根据用户描述,问题可能出现在转换过程中图片的处理上。我们需要分析可能的原因并提供解决方案。 可能的原因: 1. 图片格式不支持:DOCX中使用的图片格式可能不被转换工具支持。 2. 转换工具问题:使用的转换工具(如LibreOffice、Aspose.Words等)可能存在bug或配置问题。 3. 图片链接问题:图片可能是外部链接,而转换时未正确下载嵌入。 4. 资源路径问题:转换过程中临时文件路径包含特殊字符或过长,导致无法正确访问。 5. 内存或资源限制:转换过程中内存不足,导致图片处理失败。 解决方案: 1. 检查图片格式:确保DOCX中使用的图片格式是常见的(如JPEG、PNG、BMP等)。如果包含特殊格式(如EMF、WMF等),尝试转换为常见格式。 2. 更新转换工具:确保使用的转换工具是最新版本,以避免已知的bug。 3. 检查图片链接:如果图片是外部链接,确保转换时网络可访问,或者将图片嵌入到DOCX中(而不是链接)。 4. 简化文档:尝试将问题文档中的图片单独提取出来,然后重新插入到新的DOCX中,再转换。 5. 使用不同的转换工具:如果当前工具无法解决,尝试使用其他工具(如Microsoft Word本身、在线转换工具等)进行转换。 6. 检查转换日志:详细查看转换工具的日志,看是否有关于图片处理的错误信息。 针对调试日志显示图片已加载但最终PDF中缺失的情况,可能的问题是在生成PDF时图片被覆盖或未正确引用。可以尝试以下步骤: 步骤1:使用Microsoft Word直接另存为PDF 如果使用第三方工具转换,可以尝试用Word直接打开DOCX文件,然后选择“另存为”PDF格式。这是最可靠的转换方式。 步骤2:检查图片的嵌入方式 在DOCX中,图片可能是以链接形式存在(尤其是从其他文档复制时)。请确保图片是嵌入的: - 打开DOCX文件,选中图片,右键查看“图片格式”或“链接”选项。 - 如果存在链接,则将其断开并嵌入(通常可以右键选择“断开链接”或“嵌入”)。 步骤3:调整转换工具的设置 如果使用命令行工具(如LibreOffice),可以尝试调整参数: - 使用LibreOffice转换:`soffice --convert-to pdf yourfile.docx` - 尝试添加参数:`--headless` 和 `--convert-to` 时,确保没有错误输出。 步骤4:使用Python库进行转换(如comtypes调用Word API) 如果用户环境是Windows,可以使用comtypes调用Microsoft Word进行转换,这样转换效果通常较好。 示例代码(Python): ```python import comtypes.client def docx_to_pdf(input_docx, output_pdf): word = comtypes.client.CreateObject('Word.Application') word.Visible = False # 后台运行 doc = word.Documents.Open(input_docx) doc.SaveAs(output_pdf, FileFormat=17) # 17 表示PDF格式 doc.Close() word.Quit() # 调用示例 docx_to_pdf('input.docx', 'output.pdf') ``` 注意:此方法需要安装Microsoft Word,并且只能在Windows上运行。 步骤5:检查图片大小和分辨率 过大的图片可能导致转换失败。尝试压缩图片后再插入DOCX。 步骤6:使用在线转换工具作为临时解决方案 如果上述方法都不行,可以尝试使用可靠的在线转换工具(如Zamzar、CloudConvert等)进行转换,以确定是否是本地工具的问题。 如果问题仍然存在,请提供更多信息,如: - 使用的转换工具和版本 - 操作系统 - 具体的图片格式和大小 - 转换工具的完整日志 根据引用[3]中提到的“自动化测试与验证”,我们可以考虑在转换后使用自动化脚本检查PDF中是否包含图片,例如使用PyPDF2或pdfminer检查PDF中的图片资源。 示例代码(检查PDF中是否包含图片): ```python from PyPDF2 import PdfFileReader def check_pdf_images(pdf_path): pdf = PdfFileReader(open(pdf_path, "rb")) for page_num in range(pdf.getNumPages()): page = pdf.getPage(page_num) if '/XObject' in page['/Resources']: xObject = page['/Resources']['/XObject'].getObject() for obj in xObject: if xObject[obj]['/Subtype'] == '/Image': print(f"Found image on page {page_num+1}") else: print(f"No images found on page {page_num+1}") check_pdf_images('output.pdf') ``` 通过以上步骤,我们应该能够定位并解决DOCX转PDF时图片缺失的问题。 相关问题: 1. 如何确保DOCX中的图片是嵌入而不是链接? 2. 有哪些可靠的DOCX转PDF的开源库? 3. 在Linux环境下如何实现高质量的DOCX转PDF? 4. 转换PDF时如何优化图片大小以减小PDF文件体积? 5. 如何批量处理多个DOCX文件转换为PDF并保持图片正确嵌入?</think>### DOCX转PDF时图片未正确嵌入的解决方案 当DOCX转PDF过程中出现图片已加载但最终PDF缺失的情况,可能由以下原因及解决方案构成: #### 一、核心问题排查 1. **图片格式兼容性问题** - DOCX支持的图片格式(如HEIC、WebP)可能不被PDF转换工具识别。 - **解决方案**: - 将图片转换为通用格式(JPEG/PNG)后重新插入DOCX - 使用命令行工具批量转换: ```bash magick mogrify -format jpg *.HEIC # 需安装ImageMagick ``` 2. **转换工具缺陷** - 常见于LibreOffice/Aspose等开源工具,对复杂排版支持不足[^1]。 - **解决方案**: - 使用Microsoft Word原生转换(最可靠): ```python # Python调用Word API(需Windows环境) import win32com.client word = win32com.client.Dispatch("Word.Application") doc = word.Documents.Open(r"C:\input.docx") doc.SaveAs(r"C:\output.pdf", FileFormat=17) # 17为PDF格式代码 doc.Close() ``` 3. **资源路径错误** - 图片使用绝对路径或网络路径时,转换过程可能丢失引用。 - **验证方法**: 解压DOCX文件(重命名为.zip后解压),检查`word/media`目录是否存在图片实体文件。 4. **内存限制触发** - 大尺寸图片(>10MB)可能导致转换进程崩溃[^2]。 - **优化方案**: - 压缩图片:使用`PIL`库调整分辨率 ```python from PIL import Image img = Image.open("large_img.jpg") img.save("compressed.jpg", quality=50, optimize=True) ``` #### 二、进阶调试步骤 1. **日志深度分析** 在转换命令中添加详细日志参数(以LibreOffice为例): ```bash soffice --convert-to pdf --headless --log-file conv.log input.docx ``` 搜索日志中的`ERROR`或`WARNING`关键词,定位具体图片处理失败原因。 2. **PDF结构验证** 使用`PyPDF2`检查PDF内嵌对象: ```python from PyPDF2 import PdfReader reader = PdfReader("output.pdf") for page in reader.pages: if "/XObject" in page["/Resources"]: print(f"包含图片对象: {page['/Resources']['/XObject'].keys()}") ``` 3. **替代转换方案对比** | 工具 | 优点 | 缺点 | |---------------------|--------------------------|-----------------------| | Microsoft Word | 100%格式兼容 | 需Windows环境 | | LibreOffice | 开源跨平台 | 复杂文档易出错 | | Aspose.Words | 企业级精度 | 商业授权费用高 | | Python-docx+ReportLab| 完全可编程控制 | 开发复杂度高 | #### 三、推荐解决方案组合 1. **临时修复**: 使用在线转换服务(如Adobe官方转换器)验证是否为文件本身问题。 2. **生产环境方案**: ```mermaid graph LR A[原始DOCX] --> B{图片检查} B -->|格式异常| C[图片格式转换] B -->|路径错误| D[嵌入本地图片] C & D --> E[MS Word转换] E --> F[验证PDF完整性] ``` 3. **自动化流程示例**: ```python # 完整处理流程(伪代码) def convert_docx_to_pdf(docx_path): if check_image_issues(docx_path): # 自定义图片检测函数 fix_images(docx_path) # 图片修复处理 if os.name == 'nt': # Windows系统使用Word转换 word_convert(docx_path) else: # Linux/Mac使用LibreOffice subprocess.run(["soffice", "--convert-to", "pdf", docx_path]) validate_pdf(docx_path.replace('.docx', '.pdf')) ``` > **关键建议**:对于企业级应用,优先使用Aspose.Words等商业库(提供精确的格式控制API),其图片处理错误率低于开源方案[^3]。
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