documenthandler.h Example File

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 #ifndef DOCUMENTHANDLER_H
 #define DOCUMENTHANDLER_H

 #include <QFont>
 #include <QObject>
 #include <QTextCursor>
 #include <QUrl>

 class QTextDocument;
 class QQuickTextDocument;

 class DocumentHandler : public QObject
 {
     Q_OBJECT

     Q_PROPERTY(QQuickTextDocument *document READ document WRITE setDocument NOTIFY documentChanged)
     Q_PROPERTY(int cursorPosition READ cursorPosition WRITE setCursorPosition NOTIFY cursorPositionChanged)
     Q_PROPERTY(int selectionStart READ selectionStart WRITE setSelectionStart NOTIFY selectionStartChanged)
     Q_PROPERTY(int selectionEnd READ selectionEnd WRITE setSelectionEnd NOTIFY selectionEndChanged)

     Q_PROPERTY(QColor textColor READ textColor WRITE setTextColor NOTIFY textColorChanged)
     Q_PROPERTY(QString fontFamily READ fontFamily WRITE setFontFamily NOTIFY fontFamilyChanged)
     Q_PROPERTY(Qt::Alignment alignment READ alignment WRITE setAlignment NOTIFY alignmentChanged)

     Q_PROPERTY(bool bold READ bold WRITE setBold NOTIFY boldChanged)
     Q_PROPERTY(bool italic READ italic WRITE setItalic NOTIFY italicChanged)
     Q_PROPERTY(bool underline READ underline WRITE setUnderline NOTIFY underlineChanged)

     Q_PROPERTY(int fontSize READ fontSize WRITE setFontSize NOTIFY fontSizeChanged)

     Q_PROPERTY(QString fileName READ fileName NOTIFY fileUrlChanged)
     Q_PROPERTY(QString fileType READ fileType NOTIFY fileUrlChanged)
     Q_PROPERTY(QUrl fileUrl READ fileUrl NOTIFY fileUrlChanged)

 public:
     explicit DocumentHandler(QObject *parent = nullptr);

     QQuickTextDocument *document() const;
     void setDocument(QQuickTextDocument *document);

     int cursorPosition() const;
     void setCursorPosition(int position);

     int selectionStart() const;
     void setSelectionStart(int position);

     int selectionEnd() const;
     void setSelectionEnd(int position);

     QString fontFamily() const;
     void setFontFamily(const QString &family);

     QColor textColor() const;
     void setTextColor(const QColor &color);

     Qt::Alignment alignment() const;
     void setAlignment(Qt::Alignment alignment);

     bool bold() const;
     void setBold(bool bold);

     bool italic() const;
     void setItalic(bool italic);

     bool underline() const;
     void setUnderline(bool underline);

     int fontSize() const;
     void setFontSize(int size);

     QString fileName() const;
     QString fileType() const;
     QUrl fileUrl() const;

 public Q_SLOTS:
     void load(const QUrl &fileUrl);
     void saveAs(const QUrl &fileUrl);

 Q_SIGNALS:
     void documentChanged();
     void cursorPositionChanged();
     void selectionStartChanged();
     void selectionEndChanged();

     void fontFamilyChanged();
     void textColorChanged();
     void alignmentChanged();

     void boldChanged();
     void italicChanged();
     void underlineChanged();

     void fontSizeChanged();

     void textChanged();
     void fileUrlChanged();

     void loaded(const QString &text);
     void error(const QString &message);

 private:
     void reset();
     QTextCursor textCursor() const;
     QTextDocument *textDocument() const;
     void mergeFormatOnWordOrSelection(const QTextCharFormat &format);

     QQuickTextDocument *m_document;

     int m_cursorPosition;
     int m_selectionStart;
     int m_selectionEnd;

     QFont m_font;
     int m_fontSize;
     QUrl m_fileUrl;
 };

 #endif // DOCUMENTHANDLER_H