QTextBlockFormat、QTextListFormat

本文介绍如何使用Qt库中的QTextEdit及其相关类实现文本编辑器的格式设置功能,包括字体、字号、加粗、斜体等,并解释了QTextDocument等关键类的作用。

摘要生成于 C知道 ,由 DeepSeek-R1 满血版支持, 前往体验 >

一、设置字体、字号等格式属性。

       【应用场景描述】在编辑框中输入一段文字,用鼠标选取文字,修改工具栏上的字体、字号大小、加粗、斜体等属性,选取的文字即发生相应的变化。

       【基本概念】在编写包含格式设置的文本编辑程序时,经常用到的Qt类有:QTextEditQTextDocumentQTextCharFormatQTextCursorQTextBlockQTextListQTextFrameQTextTableQTextBlockFormatQTextListFormatQTextFrameFormatQTextTableFormat等。刚看到如此多的相关类可能会感到有些混乱,但只要弄清了它们之间的关系,运用起来就会非常方便,Qt已经为用户完成了几乎所有与编辑有关的具体工作,我们所要做的就是运用合适的类,调用合适的函数接口。

       首先,任何一个文本编辑器的程序都要用到QTextEdit作为输入文本的容器,在它里面输入的可编辑文本由QTextDocument作为载体,而QTextBlockQTextListQTextFrame等则用来表示QTextDocument的元素,也可理解为QTextDocument的不同表现形式,可能为字符串、段落、列表、表格或是图片等。每种元素都有自己的格式,这些格式则用QTextCharFormatQTextBlockFormatQTextListFormatQTextFrameFormat等类来描述与实现。例如,QTextBlockFormat类对应于QTextBlock类,QTextBlock类用于表示一块文本,一般可以理解为一个段落,但并不只指段落,QTextBlockFormat类则用于表示这一块文本的格式,如缩进值、与四边的边距等。各类之间的划分与关系可用下图进行描述:

       从上图可知,QTextCursor类是一个非常重要也经常会用到的类,它用于表示编辑文本中的光标。这个类提供了对QTextDocument文档的修改接口,所有对文档格式的修改,说到底都与光标有关,如改变字符的格式,指的是改变光标处字符的格式;改变段落的格式,指的是改变光标所在段落的格式,因此,QTextCursor类在文档编辑类程序中有着重要的作用,所有对QTextDocument的修改能够通过QTextCursor类实现。

       【继承关系】

#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
评论
添加红包

请填写红包祝福语或标题

红包个数最小为10个

红包金额最低5元

当前余额3.43前往充值 >
需支付:10.00
成就一亿技术人!
领取后你会自动成为博主和红包主的粉丝 规则
hope_wisdom
发出的红包
实付
使用余额支付
点击重新获取
扫码支付
钱包余额 0

抵扣说明:

1.余额是钱包充值的虚拟货币,按照1:1的比例进行支付金额的抵扣。
2.余额无法直接购买下载,可以购买VIP、付费专栏及课程。

余额充值