q3richtext_p.h

奇趣公司比较新的qt/emd版本

    bool ownLine() const { return true; }

private:
    int tmpheight;
    QColor color;
    bool shade;

};
#endif

class Q_COMPAT_EXPORT Q3TextFlow
{
    friend class Q3TextDocument;
#ifndef QT_NO_TEXTCUSTOMITEM
    friend class Q3TextTableCell;
#endif

public:
    Q3TextFlow();
    virtual ~Q3TextFlow();

    virtual void setWidth(int width);
    int width() const;

    virtual void setPageSize(int ps);
    int pageSize() const { return pagesize; }

    virtual int adjustLMargin(int yp, int h, int margin, int space);
    virtual int adjustRMargin(int yp, int h, int margin, int space);

#ifndef QT_NO_TEXTCUSTOMITEM
    virtual void registerFloatingItem(Q3TextCustomItem* item);
    virtual void unregisterFloatingItem(Q3TextCustomItem* item);
#endif
    virtual QRect boundingRect() const;
    virtual void drawFloatingItems(QPainter* p, int cx, int cy, int cw, int ch,
                                   const QPalette &pal, bool selected);

    virtual int adjustFlow(int  y, int w, int h); // adjusts y according to the defined pagesize. Returns the shift.

    virtual bool isEmpty();

    void clear();

private:
    int w;
    int pagesize;

#ifndef QT_NO_TEXTCUSTOMITEM
    QList<Q3TextCustomItem *> leftItems;
    QList<Q3TextCustomItem *> rightItems;
#endif
};

inline int Q3TextFlow::width() const { return w; }

#ifndef QT_NO_TEXTCUSTOMITEM
class Q3TextTable;

class Q_COMPAT_EXPORT Q3TextTableCell : public QLayoutItem
{
    friend class Q3TextTable;

public:
    Q3TextTableCell(Q3TextTable* table,
                    int row, int column,
                    const QMap<QString, QString> &attr,
                    const Q3StyleSheetItem* style,
                    const Q3TextFormat& fmt, const QString& context,
                    Q3MimeSourceFactory &factory, Q3StyleSheet *sheet, const QString& doc);
    virtual ~Q3TextTableCell();

    QSize sizeHint() const ;
    QSize minimumSize() const ;
    QSize maximumSize() const ;
    Qt::Orientations expandingDirections() const;
    bool isEmpty() const;
    void setGeometry(const QRect&) ;
    QRect geometry() const;

    bool hasHeightForWidth() const;
    int heightForWidth(int) const;

    void adjustToPainter(QPainter*);

    int row() const { return row_; }
    int column() const { return col_; }
    int rowspan() const { return rowspan_; }
    int colspan() const { return colspan_; }
    int stretch() const { return stretch_; }

    Q3TextDocument* richText()  const { return richtext; }
    Q3TextTable* table() const { return parent; }

    void draw(QPainter* p, int x, int y, int cx, int cy, int cw, int ch,
               const QPalette &cg, bool selected);

    QBrush *backGround() const { return background; }
    virtual void invalidate();

    int verticalAlignmentOffset() const;
    int horizontalAlignmentOffset() const;

private:
    QRect geom;
    Q3TextTable* parent;
    Q3TextDocument* richtext;
    int row_;
    int col_;
    int rowspan_;
    int colspan_;
    int stretch_;
    int maxw;
    int minw;
    bool hasFixedWidth;
    QBrush *background;
    int cached_width;
    int cached_sizehint;
    QMap<QString, QString> attributes;
    int align;
};
#endif


#ifndef QT_NO_TEXTCUSTOMITEM
class Q_COMPAT_EXPORT Q3TextTable: public Q3TextCustomItem
{
    friend class Q3TextTableCell;

public:
    Q3TextTable(Q3TextDocument *p, const QMap<QString, QString> &attr);
    virtual ~Q3TextTable();

    void adjustToPainter(QPainter *p);
    void pageBreak(int  y, Q3TextFlow* flow);
    void draw(QPainter* p, int x, int y, int cx, int cy, int cw, int ch,
               const QPalette &pal, bool selected);

    bool noErase() const { return true; }
    bool ownLine() const { return true; }
    Placement placement() const { return place; }
    bool isNested() const { return true; }
    void resize(int nwidth);
    virtual void invalidate();

    virtual bool enter(Q3TextCursor *c, Q3TextDocument *&doc, Q3TextParagraph *&parag, int &idx, int &ox, int &oy, bool atEnd = false);
    virtual bool enterAt(Q3TextCursor *c, Q3TextDocument *&doc, Q3TextParagraph *&parag, int &idx, int &ox, int &oy, const QPoint &pos);
    virtual bool next(Q3TextCursor *c, Q3TextDocument *&doc, Q3TextParagraph *&parag, int &idx, int &ox, int &oy);
    virtual bool prev(Q3TextCursor *c, Q3TextDocument *&doc, Q3TextParagraph *&parag, int &idx, int &ox, int &oy);
    virtual bool down(Q3TextCursor *c, Q3TextDocument *&doc, Q3TextParagraph *&parag, int &idx, int &ox, int &oy);
    virtual bool up(Q3TextCursor *c, Q3TextDocument *&doc, Q3TextParagraph *&parag, int &idx, int &ox, int &oy);

    QString richText() const;

    int minimumWidth() const;

    QList<Q3TextTableCell *> tableCells() const { return cells; }

    bool isStretching() const { return stretch; }

private:
    void format(int w);
    void addCell(Q3TextTableCell* cell);

private:
    QGridLayout* layout;
    QList<Q3TextTableCell *> cells;
    int cachewidth;
    int fixwidth;
    int cellpadding;
    int cellspacing;
    int border;
    int outerborder;
    int stretch;
    int innerborder;
    int us_cp, us_ib, us_b, us_ob, us_cs;
    int us_fixwidth;
    QMap<QString, QString> attributes;
    QMap<Q3TextCursor*, int> currCell;
    Placement place;
    void adjustCells(int y , int shift);
    int pageBreakFor;
};
#endif
// +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

#ifndef QT_NO_TEXTCUSTOMITEM
class Q3TextTableCell;
class Q3TextParagraph;
#endif

struct Q_COMPAT_EXPORT Q3TextDocumentSelection
{
    Q3TextCursor startCursor, endCursor;
    bool swapped;
    Q_DUMMY_COMPARISON_OPERATOR(Q3TextDocumentSelection)
};

class Q_COMPAT_EXPORT Q3TextDocument : public QObject
{
    Q_OBJECT

#ifndef QT_NO_TEXTCUSTOMITEM
    friend class Q3TextTableCell;
#endif
    friend class Q3TextCursor;
    friend class Q3TextEdit;
    friend class Q3TextParagraph;

public:
    enum SelectionIds {
        Standard = 0,
        Temp = 32000 // This selection must not be drawn, it's used e.g. by undo/redo to
        // remove multiple lines with removeSelectedText()
    };

    Q3TextDocument(Q3TextDocument *p);
    virtual ~Q3TextDocument();

    Q3TextDocument *parent() const { return par; }
    Q3TextParagraph *parentParagraph() const { return parentPar; }

    void setText(const QString &text, const QString &context);
    QMap<QString, QString> attributes() const { return attribs; }
    void setAttributes(const QMap<QString, QString> &attr) { attribs = attr; }

    QString text() const;
    QString text(int parag) const;
    QString originalText() const;

    int x() const;
    int y() const;
    int width() const;
    int widthUsed() const;
    int visibleWidth() const;
    int height() const;
    void setWidth(int w);
    int minimumWidth() const;
    bool setMinimumWidth(int needed, int used = -1, Q3TextParagraph *parag = 0);

    void setY(int y);
    int leftMargin() const;
    void setLeftMargin(int lm);
    int rightMargin() const;
    void setRightMargin(int rm);

    Q3TextParagraph *firstParagraph() const;
    Q3TextParagraph *lastParagraph() const;
    void setFirstParagraph(Q3TextParagraph *p);
    void setLastParagraph(Q3TextParagraph *p);

    void invalidate();

    void setPreProcessor(Q3TextPreProcessor *sh);
    Q3TextPreProcessor *preProcessor() const;

    void setFormatter(Q3TextFormatter *f);
    Q3TextFormatter *formatter() const;

    void setIndent(Q3TextIndent *i);
    Q3TextIndent *indent() const;

    QColor selectionColor(int id) const;
    QColor selectionTextColor(int id) const;
    bool hasSelectionTextColor(int id) const;
    void setSelectionColor(int id, const QColor &c);
    void setSelectionTextColor(int id, const QColor &b);
    bool hasSelection(int id, bool visible = false) const;
    void setSelectionStart(int id, const Q3TextCursor &cursor);
    bool setSelectionEnd(int id, const Q3TextCursor &cursor);
    void selectAll(int id);
    bool removeSelection(int id);
    void selectionStart(int id, int &paragId, int &index);
    Q3TextCursor selectionStartCursor(int id);
    Q3TextCursor selectionEndCursor(int id);
    void selectionEnd(int id, int &paragId, int &index);
    void setFormat(int id, Q3TextFormat *f, int flags);
    int numSelections() const { return nSelections; }
    void addSelection(int id);

    QString selectedText(int id, bool asRichText = false) const;
    void removeSelectedText(int id, Q3TextCursor *cursor);
    void indentSelection(int id);

    Q3TextParagraph *paragAt(int i) const;

    void addCommand(Q3TextCommand *cmd);
    Q3TextCursor *undo(Q3TextCursor *c = 0);
    Q3TextCursor *redo(Q3TextCursor *c  = 0);
    Q3TextCommandHistory *commands() const { return commandHistory; }

    Q3TextFormatCollection *formatCollection() const;

    bool find(Q3TextCursor &cursor, const QString &expr, bool cs, bool wo, bool forward);

    void setTextFormat(Qt::TextFormat f);
    Qt::TextFormat textFormat() const;

    bool inSelection(int selId, const QPoint &pos) const;

    Q3StyleSheet *styleSheet() const { return sheet_; }
#ifndef QT_NO_MIME
    Q3MimeSourceFactory *mimeSourceFactory() const { return factory_; }
#endif
    QString context() const { return contxt; }

    void setStyleSheet(Q3StyleSheet *s);
    void setDefaultFormat(const QFont &font, const QColor &color);
#ifndef QT_NO_MIME
    void setMimeSourceFactory(Q3MimeSourceFactory *f) { if (f) factory_ = f; }
#endif
    void setContext(const QString &c) { if (!c.isEmpty()) contxt = c; }

    void setUnderlineLinks(bool b);
    bool underlineLinks() const { return underlLinks; }

    void setPaper(QBrush *brush) { if (backBrush) delete backBrush; backBrush = brush; }
    QBrush *paper() const { return backBrush; }

    void doLayout(QPainter *p, int w);
    void draw(QPainter *p, const QRect& rect, const QPalette &pal, const QBrush *paper = 0);

    void drawParagraph(QPainter *p, Q3TextParagraph *parag, int cx, int cy, int cw, int ch,
                    QPixmap *&doubleBuffer, const QPalette &pal,
                    bool drawCursor, Q3TextCursor *cursor, bool resetChanged = true);
    Q3TextParagraph *draw(QPainter *p, int cx, int cy, int cw, int ch, const QPalette &pal,
                      bool onlyChanged = false, bool drawCursor = false, Q3TextCursor *cursor = 0,
                      bool resetChanged = true);

#ifndef QT_NO_TEXTCUSTOMITEM
    static Q3TextCustomItem* tag(Q3StyleSheet *sheet, const QString& name,
                                 const QMap<QString, QString> &attr,
                                 const QString& context,
                                 const Q3MimeSourceFactory& factory,
                                 bool emptyTag, Q3TextDocument *doc);
#endif

#ifndef QT_NO_TEXTCUSTOMITEM
    void registerCustomItem(Q3TextCustomItem *i, Q3TextParagraph *p);
    void unregisterCustomItem(Q3TextCustomItem *i, Q3TextParagraph *p);
#endif

    void setFlow(Q3TextFlow *f);
    void takeFlow();
    Q3TextFlow *flow() const { return flow_; }
    bool isPageBreakEnabled() const { return pages; }
    void setPageBreakEnabled(bool b) { pages = b; }

    void setUseFormatCollection(bool b) { useFC = b; }
    bool useFormatCollection() const { return useFC; }

#ifndef QT_NO_TEXTCUSTOMITEM
    Q3TextTableCell *tableCell() const { return tc; }
    void setTableCell(Q3TextTableCell *c) { tc = c; }
#endif

    void setPlainText(const QString &text);
    void setRichText(const QString &text, const QString &context, const Q3TextFormat *initialFormat = 0);
    QString richText() const;
    QString plainText() const;

    bool focusNextPrevChild(bool next);

    int alignment() const;
    void setAlignment(int a);

    int *tabArray() const;
    int tabStopWidth() const;
    void setTabArray(int *a);
    void setTabStops(int tw);

    void setUndoDepth(int depth) { commandHistory->setUndoDepth(depth); }
    int undoDepth() const { return commandHistory->undoDepth(); }

    int length() const;
    void clear(bool createEmptyParag = false);

    virtual Q3TextParagraph *createParagraph(Q3TextDocument *, Q3TextParagraph *pr = 0, Q3TextParagraph *nx = 0, bool updateIds = true);
    void insertChild(Q3TextDocument *dc) { childList.append(dc); }
    void removeChild(Q3TextDocument *dc) { childList.removeAll(dc); }
    QList<Q3TextDocument *> children() const { return childList; }

    bool hasFocusParagraph() const;
    QString focusHref() const;
    QString focusName() const;

    void invalidateOriginalText() { oTextValid = false; oText = QLatin1String(""); }

Q_SIGNALS:
    void minimumWidthChanged(int);

private:
    Q_DISABLE_COPY(Q3TextDocument)

    void init();
    QPixmap *bufferPixmap(const QSize &s);
    // HTML parser
    bool hasPrefix(const QChar* doc, int length, int pos, QChar c);
    bool hasPrefix(const QChar* doc, int length, int pos, const QString& s);
#ifndef QT_NO_TEXTCUSTOMITEM
    Q3TextCustomItem* parseTable(const QMap<QString, QString> &attr, const Q3TextFormat &fmt,
                                 const QChar* doc, int length, int& pos, Q3TextParagraph *curpar);
#endif
    bool eatSpace(const QChar* doc, int length, int& pos, bool includeNbsp = false);
    bool eat(const QChar* doc, int length, int& pos, QChar c);
    QString parseOpenTag(const QChar* doc, int length, int& pos, QMap<QString, QString> &attr, bool& emptyTag);
    QString parseCloseTag(const QChar* doc, int length, int& pos);
    QChar parseHTMLSpecialChar(const QChar* doc, int length, int& pos);
    QString parseWord(const QChar* doc, int length, int& pos, bool lower = true);
    QChar parseChar(const QChar* doc, int length, int& pos, Q3StyleSheetItem::WhiteSpaceMode wsm);
    void setRichTextInternal(const QString &text, Q3TextCursor* cursor = 0, const Q3TextFormat *initialFormat = 0);
    void setRichTextMarginsInternal(QList< QVector<Q3StyleSheetItem *> *>& styles, Q3TextParagraph* stylesPar);

    struct Q_COMPAT_EXPORT Focus {
        Q3TextParagraph *parag;
        int start, len;
        QString href;
        QString name;
    };

    int cx, cy, cw, vw;
    Q3TextParagraph *fParag, *lParag;
    Q3TextPreProcessor *pProcessor;
    struct SelectionColor {
        QColor background;
        QColor text;
    };
    QMap<int, SelectionColor> selectionColors;
    QMap<int, Q3TextDocumentSelection> selections;
    Q3TextCommandHistory *commandHistory;
    Q3TextFormatter *pFormatter;
    Q3TextIndent *indenter;
    Q3TextFormatCollection *fCollection;
    Qt::TextFormat txtFormat;
    uint preferRichText : 1;
    uint pages : 1;
    uint useFC : 1;
    uint withoutDoubleBuffer : 1;
    uint underlLinks : 1;
    uint nextDoubleBuffered : 1;
    uint oTextValid : 1;
    uint mightHaveCustomItems : 1;
    int align;
    int nSelections;
    Q3TextFlow *flow_;
    Q3TextDocument *par;
    Q3TextParagraph *parentPar;
#ifndef QT_NO_TEXTCUSTOMITEM
    Q3TextTableCell *tc;
#endif
    QBrush *backBrush;
    QPixmap *buf_pixmap;
    Focus focusIndicator;
    int minw;
    int wused;
    int leftmargin;
    int rightmargin;
    Q3TextParagraph *minwParag, *curParag;
    Q3StyleSheet* sheet_;
#ifndef QT_NO_MIME
    Q3MimeSourceFactory* factory_;
#endif
    QString contxt;
    QMap<QString, QString> attribs;
    int *tArray;
    int tStopWidth;
    int uDepth;
    QString oText;
    QList<Q3TextDocument *> childList;
    QColor linkColor, bodyText;
    double scaleFontsFactor;

    short list_tm,list_bm, list_lm, li_tm, li_bm, par_tm, par_bm;
};

// ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++


class Q_COMPAT_EXPORT Q3TextDeleteCommand : public Q3TextCommand
{
public:
    Q3TextDeleteCommand(Q3TextDocument *dc, int i, int idx, const QVector<Q3TextStringChar> &str,
                        const QByteArray& oldStyle);
    Q3TextDeleteCommand(Q3TextParagraph *p, int idx, const QVector<Q3TextStringChar> &str);
    virtual ~Q3TextDeleteCommand();

    Commands type() const { return Delete; }
    Q3TextCursor *execute(Q3TextCursor *c);
    Q3TextCursor *unexecute(Q3TextCursor *c);

protected:
    int id, index;
    Q3TextParagraph *parag;
    QVector<Q3TextStringChar> text;
    QByteArray styleInformation;

};

class Q_COMPAT_EXPORT Q3TextInsertCommand : public Q3TextDeleteCommand
{
public:
    Q3TextInsertCommand(Q3TextDocument *dc, int i, int idx, const QVector<Q3TextStringChar> &str,
                        const QByteArray& oldStyleInfo)
        : Q3TextDeleteCommand(dc, i, idx, str, oldStyleInfo) {}
    Q3TextInsertCommand(Q3TextParagraph *p, int idx, const QVector<Q3TextStringChar> &str)
        : Q3TextDeleteCommand(p, idx, str) {}
    virtual ~Q3TextInsertCommand() {}

    Commands type() const { return Insert; }
    Q3TextCursor *execute(Q3TextCursor *c) { return Q3TextDeleteCommand::unexecute(c); }
    Q3TextCursor *unexecute(Q3TextCursor *c) { return Q3TextDeleteCommand::execute(c); }

};

class Q_COMPAT_EXPORT Q3TextFormatCommand : public Q3TextCommand
{
public:
    Q3TextFormatCommand(Q3TextDocument *dc, int sid, int sidx, int eid, int eidx, const QVector<Q3TextStringChar> &old, Q3TextFormat *f, int fl);
    virtual ~Q3TextFormatCommand();

    Commands type() const { return Format; }
    Q3TextCursor *execute(Q3TextCursor *c);
    Q3TextCursor *unexecute(Q3TextCursor *c);