Qt 5.7 | Qt Quick Controls | Qt Quick Controls - Text Editor Example | documenthandler.h Example File

Qt 5.7.1 Reference Documentation

# documenthandler.h Example File

texteditor/src/documenthandler.h

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      #ifndef DOCUMENTHANDLER_H
      #define DOCUMENTHANDLER_H

      #include <QQuickTextDocument>

      #include <QtGui/QTextCharFormat>
      #include <QtCore/QTextCodec>

      #include <qqmlfile.h>

      class QTextDocument;

      class DocumentHandler : public QObject
      {
          Q_OBJECT

          Q_ENUMS(HAlignment)

          Q_PROPERTY(QQuickItem *target READ target WRITE setTarget NOTIFY targetChanged)
          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(QStringList defaultFontSizes READ defaultFontSizes NOTIFY defaultFontSizesChanged)

          Q_PROPERTY(QUrl fileUrl READ fileUrl WRITE setFileUrl NOTIFY fileUrlChanged)
          Q_PROPERTY(QString text READ text WRITE setText NOTIFY textChanged)
          Q_PROPERTY(QString documentTitle READ documentTitle WRITE setDocumentTitle NOTIFY documentTitleChanged)

      public:
          DocumentHandler();

          QQuickItem *target() { return m_target; }

          void setTarget(QQuickItem *target);

          void setCursorPosition(int position);
          void setSelectionStart(int position);
          void setSelectionEnd(int position);

          int cursorPosition() const { return m_cursorPosition; }
          int selectionStart() const { return m_selectionStart; }
          int selectionEnd() const { return m_selectionEnd; }

          QString fontFamily() const;

          QColor textColor() const;

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

          bool bold() const;
          bool italic() const;
          bool underline() const;
          int fontSize() const;

          QStringList defaultFontSizes() const;
          QUrl fileUrl() const;
          QString text() const;

          QString documentTitle() const;

      public Q_SLOTS:
          void setBold(bool arg);
          void setItalic(bool arg);
          void setUnderline(bool arg);
          void setFontSize(int arg);
          void setTextColor(const QColor &arg);
          void setFontFamily(const QString &arg);

          void setFileUrl(const QUrl &arg);
          void setText(const QString &arg);
          void saveAs(const QUrl &arg, const QString &fileType);

          void setDocumentTitle(QString arg);

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

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

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

          void fontSizeChanged();
          void defaultFontSizesChanged();

          void fileUrlChanged();

          void textChanged();
          void documentTitleChanged();
          void error(QString message);

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

          QQuickItem *m_target;
          QTextDocument *m_doc;

          int m_cursorPosition;
          int m_selectionStart;
          int m_selectionEnd;

          QFont m_font;
          int m_fontSize;
          QUrl m_fileUrl;
          QString m_text;
          QString m_documentTitle;
      };

      #endif