QGlyphRun Class

Member Function Documentation

QGlyphRun::QGlyphRun()

Constructs an empty QGlyphRun object.

QGlyphRun::QGlyphRun(const QGlyphRun &other)

Constructs a QGlyphRun object which is a copy of other.

QGlyphRun::~QGlyphRun()

Destroys the QGlyphRun.

QRectF QGlyphRun::boundingRect() const

Returns the smallest rectangle that contains all glyphs in this QGlyphRun. If a bounding rect has been set using setBoundingRect(), then this will be returned. Otherwise the bounding rect will be calculated based on the font metrics of the glyphs in the glyph run.

This function was introduced in Qt 5.0.

See also setBoundingRect().

void QGlyphRun::clear()

Clears all data in the QGlyphRun object.

QGlyphRun::GlyphRunFlags QGlyphRun::flags() const

Returns the flags set for this QGlyphRun.

This function was introduced in Qt 5.0.

See also setFlags(), setFlag(), and setFlag().

QVector<quint32> QGlyphRun::glyphIndexes() const

Returns the glyph indexes for this QGlyphRun object.

See also setGlyphIndexes() and setPositions().

bool QGlyphRun::isEmpty() const

Returns true if the QGlyphRun does not contain any glyphs.

This function was introduced in Qt 5.0.

bool QGlyphRun::isRightToLeft() const

Returns true if this QGlyphRun contains glyphs that are painted from the right to the left.

This function was introduced in Qt 5.0.

See also setRightToLeft() and flags().

bool QGlyphRun::overline() const

Returns true if this QGlyphRun should be painted with an overline decoration.

See also setOverline() and flags().

QVector<QPointF> QGlyphRun::positions() const

Returns the position of the edge of the baseline for each glyph in this set of glyph indexes.

See also setPositions().

QRawFont QGlyphRun::rawFont() const

Returns the font selected for this QGlyphRun object.

See also setRawFont().

void QGlyphRun::setBoundingRect(const QRectF &boundingRect)

Sets the bounding rect of the glyphs in this QGlyphRun to be boundingRect. This rectangle will be returned by boundingRect() unless it is empty, in which case the bounding rectangle of the glyphs in the glyph run will be returned instead.

Note: Unless you are implementing text shaping, you should not have to use this function. It is used specifically when the QGlyphRun should represent an area which is smaller than the area of the glyphs it contains. This could happen e.g. if the glyph run is retrieved by calling QTextLayout::glyphRuns() and the specified range only includes part of a ligature (where two or more characters are combined to a single glyph.) When this is the case, the bounding rect should only include the appropriate part of the ligature glyph, based on a calculation of the average width of the characters in the ligature.

In order to support such a case (an example is selections which should be drawn with a different color than the main text color), it is necessary to clip the painting mechanism to the rectangle returned from boundingRect() to avoid drawing the entire ligature glyph.

This function was introduced in Qt 5.0.

See also boundingRect().

void QGlyphRun::setFlag(QGlyphRun::GlyphRunFlag flag, bool enabled = true)

If enabled is true, then flag is enabled; otherwise, it is disabled.

This function was introduced in Qt 5.0.

See also flags() and setFlags().

void QGlyphRun::setFlags(QGlyphRun::GlyphRunFlags flags)

Sets the flags of this QGlyphRun to flags.

This function was introduced in Qt 5.0.

See also setFlag() and flags().

void QGlyphRun::setGlyphIndexes(const QVector<quint32> &glyphIndexes)

Set the glyph indexes for this QGlyphRun object to glyphIndexes. The glyph indexes must be valid for the selected font.

See also glyphIndexes().

void QGlyphRun::setOverline(bool overline)

Indicates that this QGlyphRun should be painted with an overline decoration if overline is true. Otherwise the QGlyphRun should be painted with no overline decoration.

See also overline(), setFlag(), and setFlags().

void QGlyphRun::setPositions(const QVector<QPointF> &positions)

Sets the positions of the edge of the baseline for each glyph in this set of glyph indexes to positions.

See also positions().

void QGlyphRun::setRawData(const quint32 *glyphIndexArray, const QPointF *glyphPositionArray, int size)

Sets the glyph indexes and positions of this QGlyphRun to use the first size elements in the arrays glyphIndexArray and glyphPositionArray. The data is not copied. The caller must guarantee that the arrays are not deleted as long as this QGlyphRun and any copies of it exists.

See also setGlyphIndexes() and setPositions().

void QGlyphRun::setRawFont(const QRawFont &rawFont)

Sets the font in which to look up the glyph indexes to the rawFont specified.

See also rawFont() and setGlyphIndexes().

void QGlyphRun::setRightToLeft(bool rightToLeft)

Indicates that this QGlyphRun contains glyphs that should be ordered from the right to left if rightToLeft is true. Otherwise the order of the glyphs is assumed to be left to right.

This function was introduced in Qt 5.0.

See also isRightToLeft(), setFlag(), and setFlags().

void QGlyphRun::setStrikeOut(bool strikeOut)

Indicates that this QGlyphRun should be painted with an strike out decoration if strikeOut is true. Otherwise the QGlyphRun should be painted with no strike out decoration.

See also strikeOut(), setFlag(), and setFlags().

void QGlyphRun::setUnderline(bool underline)

Indicates that this QGlyphRun should be painted with an underline decoration if underline is true. Otherwise the QGlyphRun should be painted with no underline decoration.

See also underline(), setFlag(), and setFlags().

bool QGlyphRun::strikeOut() const

Returns true if this QGlyphRun should be painted with a strike out decoration.

See also setStrikeOut() and flags().

void QGlyphRun::swap(QGlyphRun &other)

Swaps this glyph run instance with other. This function is very fast and never fails.

This function was introduced in Qt 5.0.

bool QGlyphRun::underline() const

Returns true if this QGlyphRun should be painted with an underline decoration.

See also setUnderline() and flags().

bool QGlyphRun::operator!=(const QGlyphRun &other) const

Compares other to this QGlyphRun object. Returns true if any of the list of glyph indexes, the list of positions or the font are different, otherwise returns false.

QGlyphRun &QGlyphRun::operator=(QGlyphRun &&other)

Move-assignment operator.

QGlyphRun &QGlyphRun::operator=(const QGlyphRun &other)

Assigns other to this QGlyphRun object.

bool QGlyphRun::operator==(const QGlyphRun &other) const

Compares other to this QGlyphRun object. Returns true if the list of glyph indexes, the list of positions and the font are all equal, otherwise returns false.