qtextformat.h

奇趣公司比较新的qt/emd版本

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#ifndef QTEXTFORMAT_H
#define QTEXTFORMAT_H

#include <QtGui/qcolor.h>
#include <QtGui/qfont.h>
#include <QtCore/qshareddata.h>
#include <QtCore/qvector.h>
#include <QtCore/qvariant.h>
#include <QtGui/qpen.h>
#include <QtGui/qbrush.h>

QT_BEGIN_HEADER

QT_MODULE(Gui)

class QString;
class QVariant;
class QFont;

class QTextFormatCollection;
class QTextFormatPrivate;
class QTextBlockFormat;
class QTextCharFormat;
class QTextListFormat;
class QTextTableFormat;
class QTextFrameFormat;
class QTextImageFormat;
class QTextFormat;
class QTextObject;
class QTextCursor;
class QTextDocument;
class QTextLength;

Q_GUI_EXPORT QDataStream &operator<<(QDataStream &, const QTextLength &);
Q_GUI_EXPORT QDataStream &operator>>(QDataStream &, QTextLength &);

class Q_GUI_EXPORT QTextLength
{
public:
    enum Type { VariableLength = 0, FixedLength, PercentageLength };

    inline QTextLength() : lengthType(VariableLength), fixedValueOrPercentage(0) {}

    inline explicit QTextLength(Type type, qreal value);

    inline Type type() const { return lengthType; }
    inline qreal value(qreal maximumLength) const
    {
        switch (lengthType) {
            case FixedLength: return fixedValueOrPercentage;
            case VariableLength: return maximumLength;
            case PercentageLength: return fixedValueOrPercentage * maximumLength / qreal(100);
        }
        return -1;
    }

    inline qreal rawValue() const { return fixedValueOrPercentage; }

    inline bool operator==(const QTextLength &other) const
    { return lengthType == other.lengthType
             && qFuzzyCompare(fixedValueOrPercentage, other.fixedValueOrPercentage); }
    inline bool operator!=(const QTextLength &other) const
    { return lengthType != other.lengthType
             || !qFuzzyCompare(fixedValueOrPercentage, other.fixedValueOrPercentage); }
    operator QVariant() const;

private:
    Type lengthType;
    qreal fixedValueOrPercentage;
    friend Q_GUI_EXPORT QDataStream &operator<<(QDataStream &, const QTextLength &);
    friend Q_GUI_EXPORT QDataStream &operator>>(QDataStream &, QTextLength &);
};

inline QTextLength::QTextLength(Type atype, qreal avalue)
    : lengthType(atype), fixedValueOrPercentage(avalue) {}

Q_GUI_EXPORT QDataStream &operator<<(QDataStream &, const QTextFormat &);
Q_GUI_EXPORT QDataStream &operator>>(QDataStream &, QTextFormat &);

class Q_GUI_EXPORT QTextFormat
{
    Q_GADGET
    Q_ENUMS(FormatType Property ObjectTypes)
public:
    enum FormatType {
        InvalidFormat = -1,
        BlockFormat = 1,
        CharFormat = 2,
        ListFormat = 3,
        TableFormat = 4,
        FrameFormat = 5,

        UserFormat = 100
    };

    enum Property {
        ObjectIndex = 0x0,

        // paragraph and char
        CssFloat = 0x0800,
        LayoutDirection = 0x0801,

        OutlinePen = 0x810,
        BackgroundBrush = 0x820,
        ForegroundBrush = 0x821,
        // Internal to qtextlayout.cpp: ObjectSelectionBrush = 0x822

        // paragraph
        BlockAlignment = 0x1010,
        BlockTopMargin = 0x1030,
        BlockBottomMargin = 0x1031,
        BlockLeftMargin = 0x1032,
        BlockRightMargin = 0x1033,
        TextIndent = 0x1034,
        BlockIndent = 0x1040,
        BlockNonBreakableLines = 0x1050,
        BlockTrailingHorizontalRulerWidth = 0x1060,

        // character properties
        FontFamily = 0x2000,
        FontPointSize = 0x2001,
        FontSizeAdjustment = 0x2002,
        FontSizeIncrement = FontSizeAdjustment, // old name, compat
        FontWeight = 0x2003,
        FontItalic = 0x2004,
        FontUnderline = 0x2005, // deprecated, use TextUnderlineStyle instead
        FontOverline = 0x2006,
        FontStrikeOut = 0x2007,
        FontFixedPitch = 0x2008,
        FontPixelSize = 0x2009,

        TextUnderlineColor = 0x2010,
        TextVerticalAlignment = 0x2021,
        TextOutline = 0x2022,
        TextUnderlineStyle = 0x2023,
        TextToolTip = 0x2024,

        IsAnchor = 0x2030,
        AnchorHref = 0x2031,
        AnchorName = 0x2032,

        ObjectType = 0x2f00,

        // list properties
        ListStyle = 0x3000,
        ListIndent = 0x3001,

        // table and frame properties
        FrameBorder = 0x4000,
        FrameMargin = 0x4001,
        FramePadding = 0x4002,
        FrameWidth = 0x4003,
        FrameHeight = 0x4004,
        FrameTopMargin    = 0x4005,
        FrameBottomMargin = 0x4006,
        FrameLeftMargin   = 0x4007,
        FrameRightMargin  = 0x4008,
        FrameBorderBrush = 0x4009,
        FrameBorderStyle = 0x4010,

        TableColumns = 0x4100,
        TableColumnWidthConstraints = 0x4101,
        TableCellSpacing = 0x4102,
        TableCellPadding = 0x4103,
        TableHeaderRowCount = 0x4104,

        // table cell properties
        TableCellRowSpan = 0x4810,
        TableCellColumnSpan = 0x4811,

        // image properties
        ImageName = 0x5000,
        ImageWidth = 0x5010,
        ImageHeight = 0x5011,

        // selection properties
        FullWidthSelection = 0x06000,

        // page break properties
        PageBreakPolicy = 0x7000,

        // --
        UserProperty = 0x100000
    };

    enum ObjectTypes {
        NoObject,
        ImageObject,
        TableObject,

        UserObject = 0x1000
    };

    enum PageBreakFlag {
        PageBreak_Auto = 0,
        PageBreak_AlwaysBefore = 0x001,
        PageBreak_AlwaysAfter  = 0x010
        // PageBreak_AlwaysInside = 0x100
    };
    Q_DECLARE_FLAGS(PageBreakFlags, PageBreakFlag)

    QTextFormat();

    explicit QTextFormat(int type);

    QTextFormat(const QTextFormat &rhs);
    QTextFormat &operator=(const QTextFormat &rhs);
    ~QTextFormat();

    void merge(const QTextFormat &other);

    inline bool isValid() const { return type() != InvalidFormat; }

    int type() const;

    int objectIndex() const;
    void setObjectIndex(int object);

    QVariant property(int propertyId) const;
    void setProperty(int propertyId, const QVariant &value);
    void clearProperty(int propertyId);
    bool hasProperty(int propertyId) const;

    bool boolProperty(int propertyId) const;
    int intProperty(int propertyId) const;
    qreal doubleProperty(int propertyId) const;
    QString stringProperty(int propertyId) const;
    QColor colorProperty(int propertyId) const;
    QPen penProperty(int propertyId) const;
    QBrush brushProperty(int propertyId) const;
    QTextLength lengthProperty(int propertyId) const;
    QVector<QTextLength> lengthVectorProperty(int propertyId) const;

    void setProperty(int propertyId, const QVector<QTextLength> &lengths);

    QMap<int, QVariant> properties() const;
    int propertyCount() const;

    inline void setObjectType(int type);
    inline int objectType() const
    { return intProperty(ObjectType); }

    inline bool isCharFormat() const { return type() == CharFormat; }
    inline bool isBlockFormat() const { return type() == BlockFormat; }
    inline bool isListFormat() const { return type() == ListFormat; }
    inline bool isFrameFormat() const { return type() == FrameFormat; }
    inline bool isImageFormat() const { return type() == CharFormat && objectType() == ImageObject; }
    inline bool isTableFormat() const { return type() == FrameFormat && objectType() == TableObject; }

    QTextBlockFormat toBlockFormat() const;
    QTextCharFormat toCharFormat() const;
    QTextListFormat toListFormat() const;
    QTextTableFormat toTableFormat() const;
    QTextFrameFormat toFrameFormat() const;
    QTextImageFormat toImageFormat() const;

    bool operator==(const QTextFormat &rhs) const;
    inline bool operator!=(const QTextFormat &rhs) const { return !operator==(rhs); }
    operator QVariant() const;

    inline void setLayoutDirection(Qt::LayoutDirection direction)
        { setProperty(QTextFormat::LayoutDirection, direction); }
    inline Qt::LayoutDirection layoutDirection() const
        { return Qt::LayoutDirection(intProperty(QTextFormat::LayoutDirection)); }

    inline void setBackground(const QBrush &brush)
    { setProperty(BackgroundBrush, brush); }
    inline QBrush background() const
    { return brushProperty(BackgroundBrush); }
    inline void clearBackground()
    { clearProperty(BackgroundBrush); }

    inline void setForeground(const QBrush &brush)
    { setProperty(ForegroundBrush, brush); }
    inline QBrush foreground() const
    { return brushProperty(ForegroundBrush); }
    inline void clearForeground()
    { clearProperty(ForegroundBrush); }

private:
    QSharedDataPointer<QTextFormatPrivate> d;
    qint32 format_type;

    friend class QTextFormatCollection;
    friend class QTextCharFormat;
    friend Q_GUI_EXPORT QDataStream &operator<<(QDataStream &, const QTextFormat &);
    friend Q_GUI_EXPORT QDataStream &operator>>(QDataStream &, QTextFormat &);
};

inline void QTextFormat::setObjectType(int atype)
{ setProperty(ObjectType, atype); }

Q_DECLARE_OPERATORS_FOR_FLAGS(QTextFormat::PageBreakFlags)

class Q_GUI_EXPORT QTextCharFormat : public QTextFormat
{
public:
    enum VerticalAlignment {
        AlignNormal = 0,
        AlignSuperScript,
        AlignSubScript,
        AlignMiddle,
        AlignTop,
        AlignBottom
    };
    enum UnderlineStyle { // keep in sync with Qt::PenStyle!
        NoUnderline,
        SingleUnderline,
        DashUnderline,
        DotLine,
        DashDotLine,
        DashDotDotLine,
        WaveUnderline,
        SpellCheckUnderline
    };

    QTextCharFormat();

    bool isValid() const { return isCharFormat(); }
    void setFont(const QFont &font);
    QFont font() const;

    inline void setFontFamily(const QString &family)
    { setProperty(FontFamily, family); }
    inline QString fontFamily() const
    { return stringProperty(FontFamily); }

    inline void setFontPointSize(qreal size)
    { setProperty(FontPointSize, size); }
    inline qreal fontPointSize() const
    { return doubleProperty(FontPointSize); }

    inline void setFontWeight(int weight)
    { if (weight == QFont::Normal) weight = 0; setProperty(FontWeight, weight); }
    inline int fontWeight() const
    { int weight = intProperty(FontWeight); if (weight == 0) weight = QFont::Normal; return weight; }
    inline void setFontItalic(bool italic)