C++ QTextCursor::insertFrame方法代码示例

/*! Append a new message to the current session and scroll to the end of the message protocol and
    returns true if the action was successful. The \a messageColor defines the color of the message
    box and should be provided as a full-color (no dimming required) color, as it is automatically
    adjusted for the border and background.
*/
bool QwcPrivateMessager::appendMessageToCurrentSession(QTextDocument *document, const QString message, const QColor messageColor)
{
    if (!document) { return false; }

    QTextCursor cursor = document->rootFrame()->lastCursorPosition();
    cursor.movePosition(QTextCursor::StartOfBlock);

    QTextFrameFormat frameFormat;
    frameFormat.setPadding(4);
    frameFormat.setBackground(messageColor.lighter(190));
    frameFormat.setMargin(0);
    frameFormat.setBorder(2);
    frameFormat.setBorderBrush(messageColor.lighter(150));
    frameFormat.setBorderStyle(QTextFrameFormat::BorderStyle_Outset);

    // Title
    QTextCharFormat backupCharFormat = cursor.charFormat();

    QTextCharFormat newCharFormat;
    newCharFormat.setFontPointSize(9);

    QTextBlockFormat headerFormat;
    headerFormat.setAlignment(Qt::AlignHCenter);
    cursor.insertBlock(headerFormat);
    cursor.setCharFormat(newCharFormat);
    cursor.insertText(QDateTime::currentDateTime().toString());

    QTextFrame *frame = cursor.insertFrame(frameFormat);
    cursor.setCharFormat(backupCharFormat);
    frame->firstCursorPosition().insertText(message);

    return true;
}

            void operator()( const pugi::xpath_node& node, QTextFrame * pframe = 0, int level = 0 ) const {

                QTextCursor cursor = edit.textCursor();
                if ( pframe )
                    cursor = pframe->lastCursorPosition();

                cursor.insertText( tagString( node ), tagFormat ); // <----------- <tag>

                auto frame = cursor.insertFrame( frameFormat );    // <-------------- insert frame
                QObject::connect( frame, &QTextFrame::destroyed, &edit, &docEdit::handleBlockDeleted );
                
                // body
                if ( std::strcmp( node.node().name(), "title" ) == 0 ) {

                    cursor.insertText( QString::fromStdString( node.node().text().get() ), headingFormat );
                }
                else if ( std::strcmp( node.node().name(), "paragraph" ) == 0 ) {

                    cursor.insertText( QString::fromStdString( node.node().text().get() ), paragraphFormat );
                }
                else {

                    cursor.insertText( QString::fromStdString( node.node().text().get() ), plainFormat );
                }

                // process childlen 
                for ( auto& child : node.node().select_nodes( "./*" ) ) {
                    (*this)(child, frame, level + 1);
                }
                cursor = pframe ? pframe->lastCursorPosition() : mainFrame->lastCursorPosition();
                cursor.insertText( QString( "</%1>" ).arg( node.node().name() ), tagFormat ); // </tag>
            }

MainWindow::MainWindow(QWidget *parent) :
    QMainWindow(parent),
    ui(new Ui::MainWindow)
{
    ui->setupUi(this);

    // 获取文档对象
    QTextDocument *document = ui->textEdit->document();

    // 获取根框架
    QTextFrame *rootFrame = document->rootFrame();

    // 创建框架格式
    QTextFrameFormat format;
    // 边界颜色
    format.setBorderBrush(Qt::red);
    // 边界宽度
    format.setBorder(3);
    // 框架使用格式
    rootFrame->setFrameFormat(format);

    QTextFrameFormat frameFormat;
    // 设置背景颜色
    frameFormat.setBackground(Qt::lightGray);
    // 设置边距
    frameFormat.setMargin(10);
    // 设置填衬
    frameFormat.setPadding(5);
    frameFormat.setBorder(2);
    frameFormat.setBorderStyle(QTextFrameFormat::BorderStyle_Dotted); //设置边框样式

    // 获取光标
    QTextCursor cursor = ui->textEdit->textCursor();
    // 在光标处插入框架
    cursor.insertFrame(frameFormat);

   //以下是5.2.2节内容
    QAction *action_textFrame = new QAction(tr("框架"),this);
    connect(action_textFrame,SIGNAL(triggered()),this,SLOT(showTextFrame()));
    // 在工具栏添加动作
    ui->mainToolBar->addAction(action_textFrame);

    QAction *action_textBlock = new QAction(tr("文本块"),this);
    connect(action_textBlock,SIGNAL(triggered()),this,SLOT(showTextBlock()));
    ui->mainToolBar->addAction(action_textBlock);

    QAction *action_font = new QAction(tr("字体"),this);
    // 设置动作可以被选中
    action_font->setCheckable(true);
    connect(action_font,SIGNAL(toggled(bool)),this,SLOT(setTextFont(bool)));
    ui->mainToolBar->addAction(action_font);
}

void CDiaryEdit::draw(QTextDocument& doc)
{
    CDiaryEditLock lock(this);
    QFontMetrics fm(QFont(font().family(),10));

    bool hasGeoCaches = false;
    int cnt;
    int w = doc.textWidth();
    int pointSize = ((10 * (w - 2 * ROOT_FRAME_MARGIN)) / (CHAR_PER_LINE *  fm.width("X")));

    if(pointSize == 0) return;

    doc.setUndoRedoEnabled(false);

    QFont f = textEdit->font();
    f.setPointSize(pointSize);
    textEdit->setFont(f);

    QTextCharFormat fmtCharHeading1;
    fmtCharHeading1.setFont(f);
    fmtCharHeading1.setFontWeight(QFont::Black);
    fmtCharHeading1.setFontPointSize(f.pointSize() + 8);

    QTextCharFormat fmtCharHeading2;
    fmtCharHeading2.setFont(f);
    fmtCharHeading2.setFontWeight(QFont::Black);
    fmtCharHeading2.setFontPointSize(f.pointSize() + 4);

    QTextCharFormat fmtCharStandard;
    fmtCharStandard.setFont(f);

    QTextCharFormat fmtCharHeader;
    fmtCharHeader.setFont(f);
    fmtCharHeader.setBackground(Qt::darkBlue);
    fmtCharHeader.setFontWeight(QFont::Bold);
    fmtCharHeader.setForeground(Qt::white);

    QTextBlockFormat fmtBlockStandard;
    fmtBlockStandard.setTopMargin(10);
    fmtBlockStandard.setBottomMargin(10);
    fmtBlockStandard.setAlignment(Qt::AlignJustify);

    QTextFrameFormat fmtFrameStandard;
    fmtFrameStandard.setTopMargin(5);
    fmtFrameStandard.setBottomMargin(5);
    fmtFrameStandard.setWidth(w - 2 * ROOT_FRAME_MARGIN);

    QTextFrameFormat fmtFrameRoot;
    fmtFrameRoot.setTopMargin(ROOT_FRAME_MARGIN);
    fmtFrameRoot.setBottomMargin(ROOT_FRAME_MARGIN);
    fmtFrameRoot.setLeftMargin(ROOT_FRAME_MARGIN);
    fmtFrameRoot.setRightMargin(ROOT_FRAME_MARGIN);

    QTextTableFormat fmtTableStandard;
    fmtTableStandard.setBorder(1);
    fmtTableStandard.setBorderBrush(Qt::black);
    fmtTableStandard.setCellPadding(4);
    fmtTableStandard.setCellSpacing(0);
    fmtTableStandard.setHeaderRowCount(1);
    fmtTableStandard.setTopMargin(10);
    fmtTableStandard.setBottomMargin(20);
    fmtTableStandard.setWidth(w - 2 * ROOT_FRAME_MARGIN);

    QVector<QTextLength> constraints;
    constraints << QTextLength(QTextLength::FixedLength, 32);
    constraints << QTextLength(QTextLength::VariableLength, 50);
    constraints << QTextLength(QTextLength::VariableLength, 100);
    fmtTableStandard.setColumnWidthConstraints(constraints);

    doc.rootFrame()->setFrameFormat(fmtFrameRoot);
    QTextCursor cursor = doc.rootFrame()->firstCursorPosition();

    cursor.insertText(diary.getName(), fmtCharHeading1);
    cursor.setCharFormat(fmtCharStandard);
    cursor.setBlockFormat(fmtBlockStandard);

    diary.diaryFrame = cursor.insertFrame(fmtFrameStandard);
    {
        QTextCursor cursor1(diary.diaryFrame);

        cursor1.setCharFormat(fmtCharStandard);
        cursor1.setBlockFormat(fmtBlockStandard);

        if(diary.getComment().isEmpty())
        {
            cursor1.insertText(tr("Add your own text here..."));
        }
        else
        {
            cursor1.insertHtml(diary.getComment());
        }
        cursor.setPosition(cursor1.position()+1);
    }

    if(!diary.getWpts().isEmpty())
    {
        QList<CWpt*>& wpts = diary.getWpts();
        cursor.insertText(tr("Waypoints"),fmtCharHeading2);

        QTextTable * table = cursor.insertTable(wpts.count()+1, eMax, fmtTableStandard);
//.........这里部分代码省略.........

bool Converter::convertTable(const QDomElement &element)
{
    /**
     * Find out dimension of the table
     */

    int rowCounter = 0;
    int columnCounter = 0;

    QQueue<QDomNode> nodeQueue;
    enqueueNodeList(nodeQueue, element.childNodes());
    while (!nodeQueue.isEmpty())
    {
        QDomElement el = nodeQueue.dequeue().toElement();
        if (el.isNull())
            continue;

        if (el.tagName() == QLatin1String("table-row"))
        {
            rowCounter++;

            int counter = 0;
            QDomElement columnElement = el.firstChildElement();
            while (!columnElement.isNull())
            {
                if (columnElement.tagName() == QLatin1String("table-cell"))
                {
                    counter++;
                }
                columnElement = columnElement.nextSiblingElement();
            }

            columnCounter = qMax(columnCounter, counter);
        }
        else if (el.tagName() == QLatin1String("table-header-rows"))
        {
            enqueueNodeList(nodeQueue, el.childNodes());
        }
    }

    /**
     * Create table
     */
    QTextTable *table = m_Cursor->insertTable(rowCounter, columnCounter);
    firstTime=false;
    m_Cursor->movePosition(QTextCursor::End);

    /**
     * Fill table
     */
    nodeQueue.clear();
    enqueueNodeList(nodeQueue, element.childNodes());

    QTextTableFormat tableFormat;

    rowCounter = 0;
    while (!nodeQueue.isEmpty())
    {
        QDomElement el = nodeQueue.dequeue().toElement();
        if (el.isNull())
            continue;

        if (el.tagName() == QLatin1String("table-row"))
        {
            int columnCounter = 0;
            QDomElement columnElement = el.firstChildElement();
            while (!columnElement.isNull())
            {
                if (columnElement.tagName() == QLatin1String("table-cell"))
                {
                    const StyleFormatProperty property = m_StyleInformation->styleProperty(columnElement.attribute("style-name"));

                    QTextBlockFormat format;
                    property.applyTableCell(&format);

                    QDomElement paragraphElement = columnElement.firstChildElement();
                    while (!paragraphElement.isNull())
                    {
                        if (paragraphElement.tagName() == QLatin1String("p"))
                        {
                            QTextTableCell cell = table->cellAt(rowCounter, columnCounter);
                            // Insert a frame into the cell and work on that, so we can handle
                            // different parts of the cell having different block formatting
                            QTextCursor cellCursor = cell.lastCursorPosition();
                            QTextFrameFormat frameFormat;
                            //frameFormat.setMargin(1); // TODO: this shouldn't be hard coded
                            //todo: too much is created here - why?
                            QTextFrame *frame = cellCursor.insertFrame(frameFormat);
                            QTextCursor frameCursor = frame->firstCursorPosition();
                            frameCursor.setBlockFormat(format);

                            if (!convertParagraph(&frameCursor, paragraphElement, format))
                                return false;
                        }
                        else if (paragraphElement.tagName() == QLatin1String("list"))
                        {
                            QTextTableCell cell = table->cellAt(rowCounter, columnCounter);
                            // insert a list into the cell
                            QTextCursor cellCursor = cell.lastCursorPosition();
                            if (!convertList(&cellCursor, paragraphElement))
//.........这里部分代码省略.........

void Format::parseFrame( QTextCursor &cursor, const QDomElement &element )
{
  QTextBlock extraBlock;
  bool hasExtraBlock = false;

  QDomNode n;
  for( n = element.firstChild(); !n.isNull(); n = n.nextSibling() ) {
    QDomElement e = n.toElement();
    if ( e.tagName() == "block" ) {
      if ( e.hasAttribute( "liststyle" ) ) {
        cursor.setCharFormat( TextFormats::normalCharFormat() );
        QTextListFormat f;
        f.setIndent( e.attribute( "listindent" ).toInt() );
        if ( e.attribute( "liststyle" ) == "decimal" ) {
          f.setStyle( QTextListFormat::ListDecimal );
        } else {
          f.setStyle( QTextListFormat::ListDisc );
        }
        cursor.mergeBlockFormat( TextFormats::normalBlockFormat() );
        cursor.insertList( f );
      } else if ( n != element.firstChild() ) {
        QTextBlockFormat f;
        if ( e.hasAttribute( "blockindent" ) ) {
          f.setIndent( e.attribute( "blockindent" ).toInt() );
        } else {
          f.setIndent( 0 );
        }
        if ( hasExtraBlock ) {
          QTextCursor c( extraBlock );
          c.setBlockFormat( f );
          hasExtraBlock = false;
        } else {
          cursor.insertBlock( f );
        }
      }
      if ( e.hasAttribute( "lastmodified" ) ) {
        QString str = e.attribute( "lastmodified" );
        QDateTime dt = QDateTime::fromString( str, Qt::ISODate );
        TextFormats::setLastModified( cursor, dt );
      }
      parseBlock( cursor, e );

      if ( e.hasAttribute( "titlestyle" ) ) {
        if ( e.attribute( "titlestyle" ) == "title" ) {
          cursor.mergeBlockFormat( TextFormats::titleBlockFormat() );
        } else if ( e.attribute( "titlestyle" ) == "subtitle" ) {
          cursor.mergeBlockFormat( TextFormats::subTitleBlockFormat() );
        }
      } else {
        cursor.mergeBlockFormat( TextFormats::normalBlockFormat() );
      }
    } else if ( e.tagName() == "frame" ) {
      QTextFrame *parentFrame = cursor.currentFrame();

      QTextFrame *frame = cursor.insertFrame( TextFormats::codeFrameFormat() );
      parseFrame( cursor, e );
      if ( e.attribute( "type" ) == "code" ) {
        TextFormats::setCodeFrameFormats( frame );
      }

      cursor = parentFrame->lastCursorPosition();
      extraBlock = cursor.block();
      hasExtraBlock = true;
    }
  }
}