q3richtext_p.h

奇趣公司比较新的qt/emd版本

protected:
    int startId, startIndex, endId, endIndex;
    Q3TextFormat *format;
    QVector<Q3TextStringChar> oldFormats;
    int flags;

};

class Q_COMPAT_EXPORT Q3TextStyleCommand : public Q3TextCommand
{
public:
    Q3TextStyleCommand(Q3TextDocument *dc, int fParag, int lParag, const QByteArray& beforeChange );
    virtual ~Q3TextStyleCommand() {}

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

    static QByteArray readStyleInformation( Q3TextDocument* dc, int fParag, int lParag);
    static void writeStyleInformation( Q3TextDocument* dc, int fParag, const QByteArray& style);

private:
    int firstParag, lastParag;
    QByteArray before;
    QByteArray after;
};

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

struct Q_COMPAT_EXPORT Q3TextParagraphSelection
{
    int start, end;
    Q_DUMMY_COMPARISON_OPERATOR(Q3TextParagraphSelection)
};

struct Q_COMPAT_EXPORT QTextLineStart
{
    QTextLineStart() : y(0), baseLine(0), h(0)
    {  }
    QTextLineStart(int y_, int bl, int h_) : y(y_), baseLine(bl), h(h_),
        w(0)
    {  }

public:
    int y, baseLine, h;
    int w;
};

class Q_COMPAT_EXPORT Q3TextParagraphData
{
public:
    Q3TextParagraphData() {}
    virtual ~Q3TextParagraphData();
    virtual void join(Q3TextParagraphData *);
};

class Q3TextParagraphPseudoDocument;

class Q3SyntaxHighlighter;

class Q_COMPAT_EXPORT Q3TextParagraph
{
    friend class Q3TextDocument;
    friend class Q3TextCursor;
    friend class Q3SyntaxHighlighter;

public:
    Q3TextParagraph(Q3TextDocument *dc, Q3TextParagraph *pr = 0, Q3TextParagraph *nx = 0, bool updateIds = true);
    ~Q3TextParagraph();

    Q3TextString *string() const;
    Q3TextStringChar *at(int i) const; // maybe remove later
    int leftGap() const;
    int length() const; // maybe remove later

    void setListStyle(Q3StyleSheetItem::ListStyle ls) { lstyle = ls; changed = true; }
    Q3StyleSheetItem::ListStyle listStyle() const { return (Q3StyleSheetItem::ListStyle)lstyle; }
    void setListItem(bool li);
    bool isListItem() const { return litem; }
    void setListValue(int v) { list_val = v; }
    int listValue() const { return list_val > 0 ? list_val : -1; }

    void setListDepth(int depth);
    int listDepth() const { return ldepth; }

//     void setFormat(Q3TextFormat *fm);
//     Q3TextFormat *paragFormat() const;

    inline Q3TextDocument *document() const {
        if (hasdoc) return (Q3TextDocument*) docOrPseudo;
        return 0;
    }
    Q3TextParagraphPseudoDocument *pseudoDocument() const;

    QRect rect() const;
    void setHeight(int h) { r.setHeight(h); }
    void show();
    void hide();
    bool isVisible() const { return visible; }

    Q3TextParagraph *prev() const;
    Q3TextParagraph *next() const;
    void setPrev(Q3TextParagraph *s);
    void setNext(Q3TextParagraph *s);

    void insert(int index, const QString &s);
    void insert(int index, const QChar *unicode, int len);
    void append(const QString &s, bool reallyAtEnd = false);
    void truncate(int index);
    void remove(int index, int len);
    void join(Q3TextParagraph *s);

    void invalidate(int chr);

    void move(int &dy);
    void format(int start = -1, bool doMove = true);

    bool isValid() const;
    bool hasChanged() const;
    void setChanged(bool b, bool recursive = false);

    int lineHeightOfChar(int i, int *bl = 0, int *y = 0) const;
    Q3TextStringChar *lineStartOfChar(int i, int *index = 0, int *line = 0) const;
    int lines() const;
    Q3TextStringChar *lineStartOfLine(int line, int *index = 0) const;
    int lineY(int l) const;
    int lineBaseLine(int l) const;
    int lineHeight(int l) const;
    void lineInfo(int l, int &y, int &h, int &bl) const;

    void setSelection(int id, int start, int end);
    void removeSelection(int id);
    int selectionStart(int id) const;
    int selectionEnd(int id) const;
    bool hasSelection(int id) const;
    bool hasAnySelection() const;
    bool fullSelected(int id) const;

    void setEndState(int s);
    int endState() const;

    void setParagId(int i);
    int paragId() const;

    bool firstPreProcess() const;
    void setFirstPreProcess(bool b);

    void indent(int *oldIndent = 0, int *newIndent = 0);

    void setExtraData(Q3TextParagraphData *data);
    Q3TextParagraphData *extraData() const;

    QMap<int, QTextLineStart*> &lineStartList();

    void setFormat(int index, int len, Q3TextFormat *f, bool useCollection = true, int flags = -1);

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

    void paint(QPainter &painter, const QPalette &pal, Q3TextCursor *cursor = 0,
                bool drawSelections = false, int clipx = -1, int clipy = -1,
                int clipw = -1, int cliph = -1);

    int topMargin() const;
    int bottomMargin() const;
    int leftMargin() const;
    int firstLineMargin() const;
    int rightMargin() const;
    int lineSpacing() const;

#ifndef QT_NO_TEXTCUSTOMITEM
    void registerFloatingItem(Q3TextCustomItem *i);
    void unregisterFloatingItem(Q3TextCustomItem *i);
#endif

    void setFullWidth(bool b) { fullWidth = b; }
    bool isFullWidth() const { return fullWidth; }

#ifndef QT_NO_TEXTCUSTOMITEM
    Q3TextTableCell *tableCell() const;
#endif

    QBrush *background() const;

    int documentWidth() const;
    int documentVisibleWidth() const;
    int documentX() const;
    int documentY() const;
    Q3TextFormatCollection *formatCollection() const;
    Q3TextFormatter *formatter() const;

    int nextTab(int i, int x);
    int *tabArray() const;
    void setTabArray(int *a);
    void setTabStops(int tw);

    void adjustToPainter(QPainter *p);

    void setNewLinesAllowed(bool b);
    bool isNewLinesAllowed() const;

    QString richText() const;

    void addCommand(Q3TextCommand *cmd);
    Q3TextCursor *undo(Q3TextCursor *c = 0);
    Q3TextCursor *redo(Q3TextCursor *c  = 0);
    Q3TextCommandHistory *commands() const;
    void copyParagData(Q3TextParagraph *parag);

    void setBreakable(bool b) { breakable = b; }
    bool isBreakable() const { return breakable; }

    void setBackgroundColor(const QColor &c);
    QColor *backgroundColor() const { return bgcol; }
    void clearBackgroundColor();

    void setMovedDown(bool b) { movedDown = b; }
    bool wasMovedDown() const { return movedDown; }

    void setDirection(QChar::Direction);
    QChar::Direction direction() const;
    void setPaintDevice(QPaintDevice *pd) { paintdevice = pd; }

    void readStyleInformation(QDataStream& stream);
    void writeStyleInformation(QDataStream& stream) const;

protected:
    void setColorForSelection(QColor &c, QPainter &p, const QPalette &pal, int selection);
    void drawLabel(QPainter* p, int x, int y, int w, int h, int base, const QPalette &pal);
    void drawString(QPainter &painter, const QString &str, int start, int len, int xstart,
                             int y, int baseLine, int w, int h, bool drawSelections, int fullSelectionWidth,
                             Q3TextStringChar *formatChar, const QPalette &pal,
                             bool rightToLeft);

private:
    QMap<int, Q3TextParagraphSelection> &selections() const;
#ifndef QT_NO_TEXTCUSTOMITEM
    QList<Q3TextCustomItem *> &floatingItems() const;
#endif
    inline QBrush backgroundBrush(const QPalette &pal) {
        if (bgcol)
            return *bgcol;
        return pal.brush(QPalette::Base);
    }
    void invalidateStyleCache();

    QMap<int, QTextLineStart*> lineStarts;
    QRect r;
    Q3TextParagraph *p, *n;
    void *docOrPseudo;
    uint changed : 1;
    uint firstFormat : 1;
    uint firstPProcess : 1;
    uint needPreProcess : 1;
    uint fullWidth : 1;
    uint lastInFrame : 1;
    uint visible : 1;
    uint breakable : 1;
    uint movedDown : 1;
    uint mightHaveCustomItems : 1;
    uint hasdoc : 1;
    uint litem : 1; // whether the paragraph is a list item
    uint rtext : 1; // whether the paragraph needs rich text margin
    signed int align : 5;
    uint /*Q3StyleSheetItem::ListStyle*/ lstyle : 4;
    int invalid;
    int state, id;
    Q3TextString *str;
    QMap<int, Q3TextParagraphSelection> *mSelections;
#ifndef QT_NO_TEXTCUSTOMITEM
    QList<Q3TextCustomItem *> *mFloatingItems;
#endif
    short utm, ubm, ulm, urm, uflm, ulinespacing;
    short tabStopWidth, minwidth;
    int *tArray;
    Q3TextParagraphData *eData;
    short list_val;
    ushort ldepth;
    QColor *bgcol;
    QPaintDevice *paintdevice;
};

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

class Q_COMPAT_EXPORT Q3TextFormatter
{
public:
    Q3TextFormatter();
    virtual ~Q3TextFormatter();

    virtual int format(Q3TextDocument *doc, Q3TextParagraph *parag, int start, const QMap<int, QTextLineStart*> &oldLineStarts) = 0;
    virtual int formatVertically(Q3TextDocument* doc, Q3TextParagraph* parag);

    bool isWrapEnabled(Q3TextParagraph *p) const { if (!wrapEnabled) return false; if (p && !p->isBreakable()) return false; return true;}
    int wrapAtColumn() const { return wrapColumn;}
    virtual void setWrapEnabled(bool b);
    virtual void setWrapAtColumn(int c);
    virtual void setAllowBreakInWords(bool b) { biw = b; }
    bool allowBreakInWords() const { return biw; }

    int minimumWidth() const { return thisminw; }
    int widthUsed() const { return thiswused; }

protected:
    virtual QTextLineStart *formatLine(Q3TextParagraph *parag, Q3TextString *string, QTextLineStart *line, Q3TextStringChar *start,
                                               Q3TextStringChar *last, int align = Qt::AlignAuto, int space = 0);
#ifndef QT_NO_COMPLEXTEXT
    virtual QTextLineStart *bidiReorderLine(Q3TextParagraph *parag, Q3TextString *string, QTextLineStart *line, Q3TextStringChar *start,
                                                    Q3TextStringChar *last, int align, int space);
#endif
    void insertLineStart(Q3TextParagraph *parag, int index, QTextLineStart *ls);

    int thisminw;
    int thiswused;

private:
    bool wrapEnabled;
    int wrapColumn;
    bool biw;
};

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

class Q_COMPAT_EXPORT Q3TextFormatterBreakInWords : public Q3TextFormatter
{
public:
    Q3TextFormatterBreakInWords();
    virtual ~Q3TextFormatterBreakInWords() {}

    int format(Q3TextDocument *doc, Q3TextParagraph *parag, int start, const QMap<int, QTextLineStart*> &oldLineStarts);

};

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

class Q_COMPAT_EXPORT Q3TextFormatterBreakWords : public Q3TextFormatter
{
public:
    Q3TextFormatterBreakWords();
    virtual ~Q3TextFormatterBreakWords() {}

    int format(Q3TextDocument *doc, Q3TextParagraph *parag, int start, const QMap<int, QTextLineStart*> &oldLineStarts);

};

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

class Q_COMPAT_EXPORT Q3TextIndent
{
public:
    Q3TextIndent();
    virtual ~Q3TextIndent() {}

    virtual void indent(Q3TextDocument *doc, Q3TextParagraph *parag, int *oldIndent = 0, int *newIndent = 0) = 0;

};

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

class Q_COMPAT_EXPORT Q3TextPreProcessor
{
public:
    enum Ids {
        Standard = 0
    };

    Q3TextPreProcessor();
    virtual ~Q3TextPreProcessor() {}

    virtual void process(Q3TextDocument *doc, Q3TextParagraph *, int, bool = true) = 0;
    virtual Q3TextFormat *format(int id) = 0;

};

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

class Q_COMPAT_EXPORT Q3TextFormat
{
    friend class Q3TextFormatCollection;
    friend class Q3TextDocument;

public:
    enum Flags {
        NoFlags,
        Bold = 1,
        Italic = 2,
        Underline = 4,
        Family = 8,
        Size = 16,
        Color = 32,
        Misspelled = 64,
        VAlign = 128,
        StrikeOut= 256,
        Font = Bold | Italic | Underline | Family | Size | StrikeOut,
        Format = Font | Color | Misspelled | VAlign
    };

    enum VerticalAlignment { AlignNormal, AlignSuperScript, AlignSubScript };

    Q3TextFormat();
    virtual ~Q3TextFormat();

    Q3TextFormat(const Q3StyleSheetItem *s);
    Q3TextFormat(const QFont &f, const QColor &c, Q3TextFormatCollection *parent = 0);
    Q3TextFormat(const Q3TextFormat &fm);
    Q3TextFormat makeTextFormat(const Q3StyleSheetItem *style, const QMap<QString,QString>& attr, double scaleFontsFactor) const;
    Q3TextFormat& operator=(const Q3TextFormat &fm);
    QColor color() const;
    QFont font() const;
    QFontMetrics fontMetrics() const { return fm; }
    bool isMisspelled() const;
    VerticalAlignment vAlign() const;
    int minLeftBearing() const;
    int minRightBearing() const;
    int width(const QChar &c) const;
    int width(const QString &str, int pos) const;
    int height() const;
    int ascent() const;
    int descent() const;
    int leading() const;
    bool useLinkColor() const;

    void setBold(bool b);
    void setItalic(bool b);
    void setUnderline(bool b);
    void setStrikeOut(bool b);
    void setFamily(const QString &f);
    void setPointSize(int s);
    void setFont(const QFont &f);
    void setColor(const QColor &c);
    void setMisspelled(bool b);
    void setVAlign(VerticalAlignment a);

    bool operator==(const Q3TextFormat &f) const;
    Q3TextFormatCollection *parent() const;
    const QString &key() const;

    static QString getKey(const QFont &f, const QColor &c, bool misspelled, VerticalAlignment vAlign);

    void addRef();
    void removeRef();

    QString makeFormatChangeTags(Q3TextFormat* defaultFormat, Q3TextFormat *f, const QString& oldAnchorHref, const QString& anchorHref) const;
    QString makeFormatEndTags(Q3TextFormat* defaultFormat, const QString& anchorHref) const;

    static void setPainter(QPainter *p);
    static QPainter* painter();

    bool fontSizesInPixels() { return usePixelSizes; }

protected:
    virtual void generateKey();

private:
    void update();
    static void applyFont(const QFont &f);

private:
    QFont fn;
    QColor col;
    QFontMetrics fm;
    uint missp : 1;
    uint linkColor : 1;
    uint usePixelSizes : 1;
    int leftBearing, rightBearing;
    VerticalAlignment ha;
    uchar widths[256];
    int hei, asc, dsc;
    Q3TextFormatCollection *collection;
    int ref;
    QString k;
    int logicalFontSize;
    int stdSize;
    static QPainter *pntr;
    static QFontMetrics *pntr_fm;
    static int pntr_asc;
    static int pntr_hei;
    static int pntr_ldg;
    static int pntr_dsc;

};

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

class Q_COMPAT_EXPORT Q3TextFormatCollection
{
    friend class Q3TextDocument;
    friend class Q3TextFormat;

public:
    Q3TextFormatCollection();
    virtual ~Q3TextFormatCollection();

    void setDefaultFormat(Q3TextFormat *f);
    Q3TextFormat *defaultFormat() const;
    virtual Q3TextFormat *format(Q3TextFormat *f);
    virtual Q3TextFormat *format(Q3TextFormat *of, Q3TextFormat *nf, int flags);
    virtual Q3TextFormat *format(const QFont &f, const QColor &c);
    virtual void remove(Q3TextFormat *f);
    virtual Q3TextFormat *createFormat(const Q3TextFormat &f) { return new Q3TextFormat(f); }
    virtual Q3TextFormat *createFormat(const QFont &f, const QColor &c) { return new Q3TextFormat(f, c, this); }

    void updateDefaultFormat(const QFont &font, const QColor &c, Q3StyleSheet *sheet);

    QPaintDevice *paintDevice() const { return paintdevice; }
    void setPaintDevice(QPaintDevice *);

private:
    void updateKeys();

private:
    Q3TextFormat *defFormat, *lastFormat, *cachedFormat;
    QHash<QString, Q3TextFormat *> cKey;
    Q3TextFormat *cres;
    QFont cfont;
    QColor ccol;
    QString kof, knf;
    int cflags;

    QPaintDevice *paintdevice;
};

class Q_COMPAT_EXPORT Q3TextParagraphPseudoDocument
{