\reentrant \inmodule QtGui More...

#include <qfontmetrics.h>

Collaboration diagram for QFontMetricsF:

Public Member Functions
	QFontMetricsF (const QFont &font)
	Constructs a font metrics object for font.
	QFontMetricsF (const QFont &font, const QPaintDevice *pd)
	QFontMetricsF (const QFontMetrics &)
	QFontMetricsF (const QFontMetricsF &)
	Constructs a copy of fm.
	QFontMetricsF (QFontMetricsF &&)=default
	~QFontMetricsF ()
	Destroys the font metrics object and frees all allocated resources.
QFontMetricsF &	operator= (const QFontMetricsF &)
	Assigns the font metrics fm to this font metrics object.
QFontMetricsF &	operator= (const QFontMetrics &)
void	swap (QFontMetricsF &other) noexcept
qreal	ascent () const
	Returns the ascent of the font.
qreal	capHeight () const
	Returns the cap height of the font.
qreal	descent () const
	Returns the descent of the font.
qreal	height () const
	Returns the height of the font.
qreal	leading () const
	Returns the leading of the font.
qreal	lineSpacing () const
	Returns the distance from one base line to the next.
qreal	minLeftBearing () const
	Returns the minimum left bearing of the font.
qreal	minRightBearing () const
	Returns the minimum right bearing of the font.
qreal	maxWidth () const
	Returns the width of the widest character in the font.
qreal	xHeight () const
	Returns the 'x' height of the font.
qreal	averageCharWidth () const
bool	inFont (QChar) const
	Returns `true` if character ch is a valid character in the font; otherwise returns `false`.
bool	inFontUcs4 (uint ucs4) const
	Returns `true` if the character given by ch, encoded in UCS-4/UTF-32, is a valid character in the font; otherwise returns `false`.
qreal	leftBearing (QChar) const
	Returns the left bearing of character ch in the font.
qreal	rightBearing (QChar) const
	Returns the right bearing of character ch in the font.
qreal	horizontalAdvance (const QString &string, int length=-1) const
	Returns the horizontal advance in pixels of the first length characters of text.
qreal	horizontalAdvance (QChar) const
	This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.
qreal	horizontalAdvance (const QString &string, const QTextOption &textOption) const
	Returns the horizontal advance in pixels of text laid out using option.
QRectF	boundingRect (const QString &string) const
	Returns the bounding rectangle of the characters in the string specified by text.
QRectF	boundingRect (const QString &text, const QTextOption &textOption) const
	Returns the bounding rectangle of the characters in the string specified by text laid out using option.
QRectF	boundingRect (QChar) const
	Returns the bounding rectangle of the character ch relative to the left-most point on the base line.
QRectF	boundingRect (const QRectF &r, int flags, const QString &string, int tabstops=0, int *tabarray=nullptr) const
	This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.Returns the bounding rectangle of the characters in the given text.
QSizeF	size (int flags, const QString &str, int tabstops=0, int *tabarray=nullptr) const
	Returns the size in pixels of the characters in the given text.
QRectF	tightBoundingRect (const QString &text) const
QRectF	tightBoundingRect (const QString &text, const QTextOption &textOption) const
	Returns a tight bounding rectangle around the characters in the string specified by text laid out using option.
QString	elidedText (const QString &text, Qt::TextElideMode mode, qreal width, int flags=0) const
qreal	underlinePos () const
	Returns the distance from the base line to where an underscore should be drawn.
qreal	overlinePos () const
	Returns the distance from the base line to where an overline should be drawn.
qreal	strikeOutPos () const
	Returns the distance from the base line to where the strikeout line should be drawn.
qreal	lineWidth () const
	Returns the width of the underline and strikeout lines, adjusted for the point size of the font.
qreal	fontDpi () const
bool	operator== (const QFontMetricsF &other) const
	Returns `true` if the font metrics are equal to the other font metrics; otherwise returns `false`.
bool	operator!= (const QFontMetricsF &other) const
	This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.Returns `true` if the font metrics are not equal to the other font metrics; otherwise returns `false`.

Detailed Description

\reentrant \inmodule QtGui

The QFontMetricsF class provides font metrics information.

QFontMetricsF functions calculate the size of characters and strings for a given font. You can construct a QFontMetricsF object with an existing QFont to obtain metrics for that font. If the font is changed later, the font metrics object is not updated.

Once created, the object provides functions to access the individual metrics of the font, its characters, and for strings rendered in the font.

There are several functions that operate on the font: ascent(), descent(), height(), leading() and lineSpacing() return the basic size properties of the font. The underlinePos(), overlinePos(), strikeOutPos() and lineWidth() functions, return the properties of the line that underlines, overlines or strikes out the characters. These functions are all fast.

There are also some functions that operate on the set of glyphs in the font: minLeftBearing(), minRightBearing() and maxWidth(). These are by necessity slow, and we recommend avoiding them if possible.

For each character, you can get its horizontalAdvance(), leftBearing(), and rightBearing(), and find out whether it is in the font using inFont(). You can also treat the character as a string, and use the string functions on it.

The string functions include horizontalAdvance(), to return the width of a string in pixels (or points, for a printer), boundingRect(), to return a rectangle large enough to contain the rendered string, and size(), to return the size of that rectangle.

QFontMetrics has two different functions for calculating the bounds of a string, each with multiple overloads: boundingRect() and tightBoundingRect(). If a precise bounding rect is needed, then tightBoundingRect() should be preferred. This will measure each glyph individually to return a bounding rect that fits tightly around the rendered text. Depending on the platform, the boundingRect() function may return approximated bounds, but require less computation.

Example:

QFont font("times", 24);
QFontMetricsF fm(font);
qreal pixelsWide = fm.horizontalAdvance("What's the advance width of this text?");
qreal pixelsHigh = fm.height();

See also: QFont, QFontInfo, QFontDatabase

Definition at line 92 of file qfontmetrics.h.

Constructor & Destructor Documentation

◆ QFontMetricsF() [1/5]

QFontMetricsF::QFontMetricsF ( const QFont & font )

explicit

Constructs a font metrics object for font.

The font metrics will be compatible with the paintdevice used to create font.

The font metrics object holds the information for the font that is passed in the constructor at the time it is created, and is not updated if the font's attributes are changed later.

Use QFontMetricsF(const QFont &, QPaintDevice *) to get the font metrics that are compatible with a certain paint device.

Definition at line 1042 of file qfontmetrics.cpp.

◆ QFontMetricsF() [2/5]

QFontMetricsF::QFontMetricsF	(	const QFont &	font,
		const QPaintDevice *	paintdevice )

Since: 5.13 Constructs a font metrics object for font and paintdevice.

The font metrics will be compatible with the paintdevice passed. If the paintdevice is \nullptr, the metrics will be screen-compatible, ie. the metrics you get if you use the font for drawing text on a \l{QWidget}{widgets} or \l{QPixmap}{pixmaps}, not on a QPicture or QPrinter.

The font metrics object holds the information for the font that is passed in the constructor at the time it is created, and is not updated if the font's attributes are changed later.

Definition at line 1062 of file qfontmetrics.cpp.

◆ QFontMetricsF() [3/5]

QFontMetricsF::QFontMetricsF ( const QFontMetrics & fontMetrics )

Since: 4.2

Constructs a font metrics object with floating point precision from the given fontMetrics object.

Definition at line 1005 of file qfontmetrics.cpp.

◆ QFontMetricsF() [4/5]

QFontMetricsF::QFontMetricsF ( const QFontMetricsF & fm )

Constructs a copy of fm.

Definition at line 1077 of file qfontmetrics.cpp.

◆ QFontMetricsF() [5/5]

QFontMetricsF::QFontMetricsF ( QFontMetricsF && )

default

◆ ~QFontMetricsF()

QFontMetricsF::~QFontMetricsF ( )

Destroys the font metrics object and frees all allocated resources.

Definition at line 1086 of file qfontmetrics.cpp.

Member Function Documentation

◆ ascent()

qreal QFontMetricsF::ascent ( ) const

Returns the ascent of the font.

The ascent of a font is the distance from the baseline to the highest position characters extend to. In practice, some font designers break this rule, e.g. when they put more than one accent on top of a character, or to accommodate a certain character, so it is possible (though rare) that this value will be too small.

See also: descent()

Definition at line 1133 of file qfontmetrics.cpp.

◆ averageCharWidth()

qreal QFontMetricsF::averageCharWidth ( ) const

Since: 4.2

Returns the average width of glyphs in the font.

Definition at line 1282 of file qfontmetrics.cpp.

◆ boundingRect() [1/4]

QRectF QFontMetricsF::boundingRect	(	const QRectF &	rect,
		int	flags,
		const QString &	text,
		int	tabStops = 0,
		int *	tabArray = nullptr ) const

This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.Returns the bounding rectangle of the characters in the given text.

This is the set of pixels the text would cover if drawn when constrained to the bounding rectangle specified by rect. If rect is a reference to a \nullptr object, e.g. when passing a default constructed QRectF, the bounding rectangle will not constrain itself to the size.

The flags argument is the bitwise OR of the following flags: \list

Qt::AlignLeft aligns to the left border, except for Arabic and Hebrew where it aligns to the right.
Qt::AlignRight aligns to the right border, except for Arabic and Hebrew where it aligns to the left.
Qt::AlignJustify produces justified text.
Qt::AlignHCenter aligns horizontally centered.
Qt::AlignTop aligns to the top border.
Qt::AlignBottom aligns to the bottom border.
Qt::AlignVCenter aligns vertically centered
Qt::AlignCenter (== {Qt::AlignHCenter | Qt::AlignVCenter})
Qt::TextSingleLine ignores newline characters in the text.
Qt::TextExpandTabs expands tabs (see below)
Qt::TextShowMnemonic interprets "&x" as \underline{x}; i.e., underlined.
Qt::TextWordWrap breaks the text to fit the rectangle. \endlist

Qt::Horizontal alignment defaults to Qt::AlignLeft and vertical alignment defaults to Qt::AlignTop.

If several of the horizontal or several of the vertical alignment flags are set, the resulting alignment is undefined.

These flags are defined in \l{Qt::AlignmentFlag}.

If Qt::TextExpandTabs is set in flags, the following behavior is used to interpret tab characters in the text: \list

If tabArray is non-null, it specifies a 0-terminated sequence of pixel-positions for tabs in the text.
If tabStops is non-zero, it is used as the tab spacing (in pixels). \endlist

Note that the bounding rectangle may extend to the left of (0, 0), e.g. for italicized fonts.

Newline characters are processed as line breaks.

Despite the different actual character heights, the heights of the bounding rectangles of "Yes" and "yes" are the same.

The bounding rectangle returned by this function is somewhat larger than that calculated by the simpler boundingRect() function. This function uses the \l{minLeftBearing()}{maximum left} and \l{minRightBearing()}{right} font bearings as is necessary for multi-line text to align correctly. Also, fontHeight() and lineSpacing() are used to calculate the height, rather than individual character heights.

See also: horizontalAdvance(), QPainter::boundingRect(), Qt::Alignment

Definition at line 1649 of file qfontmetrics.cpp.

◆ boundingRect() [2/4]

QRectF QFontMetricsF::boundingRect ( const QString & text ) const

Returns the bounding rectangle of the characters in the string specified by text.

The bounding rectangle always covers at least the set of pixels the text would cover if drawn at (0, 0).

Note that the bounding rectangle may extend to the left of (0, 0), e.g. for italicized fonts, and that the width of the returned rectangle might be different than what the horizontalAdvance() method returns.

If you want to know the advance width of the string (to lay out a set of strings next to each other), use horizontalAdvance() instead.

Newline characters are processed as normal characters, not as linebreaks.

The height of the bounding rectangle is at least as large as the value returned height().

See also: horizontalAdvance(), height(), QPainter::boundingRect()

Definition at line 1508 of file qfontmetrics.cpp.

◆ boundingRect() [3/4]

QRectF QFontMetricsF::boundingRect	(	const QString &	text,
		const QTextOption &	option ) const

Returns the bounding rectangle of the characters in the string specified by text laid out using option.

The bounding rectangle always covers at least the set of pixels the text would cover if drawn at (0, 0).

Note that the bounding rectangle may extend to the left of (0, 0), e.g. for italicized fonts, and that the width of the returned rectangle might be different than what the horizontalAdvance() method returns.

If you want to know the advance width of the string (to lay out a set of strings next to each other), use horizontalAdvance() instead.

Newline characters are processed as normal characters, not as linebreaks.

The height of the bounding rectangle is at least as large as the value returned height().

Since: 6.3

See also: horizontalAdvance(), height(), QPainter::boundingRect()

Definition at line 1543 of file qfontmetrics.cpp.

◆ boundingRect() [4/4]

QRectF QFontMetricsF::boundingRect ( QChar ch ) const

Returns the bounding rectangle of the character ch relative to the left-most point on the base line.

Note that the bounding rectangle may extend to the left of (0, 0), e.g. for italicized fonts, and that the text output may cover all pixels in the bounding rectangle.

Note that the rectangle usually extends both above and below the base line.

See also: horizontalAdvance()

Definition at line 1570 of file qfontmetrics.cpp.

◆ capHeight()

qreal QFontMetricsF::capHeight ( ) const

Returns the cap height of the font.

Since: 5.8

The cap height of a font is the height of a capital letter above the baseline. It specifically is the height of capital letters that are flat - such as H or I - as opposed to round letters such as O, or pointed letters like A, both of which may display overshoot.

See also: ascent()

Definition at line 1152 of file qfontmetrics.cpp.

◆ descent()

qreal QFontMetricsF::descent ( ) const

Returns the descent of the font.

The descent is the distance from the base line to the lowest point characters extend to. (Note that this is different from X, which adds 1 pixel.) In practice, some font designers break this rule, e.g. to accommodate a certain character, so it is possible (though rare) that this value will be too small.

See also: ascent()

Definition at line 1170 of file qfontmetrics.cpp.

◆ elidedText()

QString QFontMetricsF::elidedText	(	const QString &	text,
		Qt::TextElideMode	mode,
		qreal	width,
		int	flags = 0 ) const

Since: 4.2

If the string text is wider than width, returns an elided version of the string (i.e., a string with "..." in it). Otherwise, returns the original string.

The mode parameter specifies whether the text is elided on the left (for example, "...tech"), in the middle (for example, "Tr...ch"), or on the right (for example, "Trol...").

The width is specified in pixels, not characters.

The flags argument is optional and currently only supports Qt::TextShowMnemonic as value.

The elide mark follows the \l{Qt::LayoutDirection}{layoutdirection}. For example, it will be on the right side of the text for right-to-left layouts if the mode is {Qt::ElideLeft}, and on the left side of the text if the mode is {Qt::ElideRight}.

Definition at line 1782 of file qfontmetrics.cpp.

◆ fontDpi()

qreal QFontMetricsF::fontDpi ( ) const

Since: 5.14

Returns the font DPI.

Definition at line 1854 of file qfontmetrics.cpp.

◆ height()

qreal QFontMetricsF::height ( ) const

Returns the height of the font.

This is always equal to ascent()+descent().

See also: leading(), lineSpacing()

Definition at line 1184 of file qfontmetrics.cpp.

◆ horizontalAdvance() [1/3]

qreal QFontMetricsF::horizontalAdvance	(	const QString &	text,
		const QTextOption &	option ) const

Returns the horizontal advance in pixels of text laid out using option.

The advance is the distance appropriate for drawing a subsequent character after text.

Since: 6.3

See also: boundingRect()

Definition at line 1416 of file qfontmetrics.cpp.

◆ horizontalAdvance() [2/3]

qreal QFontMetricsF::horizontalAdvance	(	const QString &	text,
		int	length = -1 ) const

Returns the horizontal advance in pixels of the first length characters of text.

If length is negative (the default), the entire string is used. The entire length of text is analysed even if length is substantially shorter.

The advance is the distance appropriate for drawing a subsequent character after text.

Since: 5.11

See also: boundingRect()

Definition at line 1388 of file qfontmetrics.cpp.

◆ horizontalAdvance() [3/3]

qreal QFontMetricsF::horizontalAdvance ( QChar ch ) const

This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.

Bearings

Returns the horizontal advance of character ch in pixels. This is a distance appropriate for drawing a subsequent character after ch.

Some of the metrics are described in the image to the right. The central dark rectangles cover the logical horizontalAdvance() of each character. The outer pale rectangles cover the leftBearing() and rightBearing() of each character. Notice that the bearings of "f" in this particular font are both negative, while the bearings of "o" are both positive.

Warning: This function will produce incorrect results for Arabic characters or non-spacing marks in the middle of a string, as the glyph shaping and positioning of marks that happens when processing strings cannot be taken into account. When implementing an interactive text control, use QTextLayout instead.

Since: 5.11

See also: boundingRect()

Definition at line 1460 of file qfontmetrics.cpp.

◆ inFont()

bool QFontMetricsF::inFont ( QChar ch ) const

Returns true if character ch is a valid character in the font; otherwise returns false.

Definition at line 1293 of file qfontmetrics.cpp.

◆ inFontUcs4()

bool QFontMetricsF::inFontUcs4 ( uint ucs4 ) const

Returns true if the character given by ch, encoded in UCS-4/UTF-32, is a valid character in the font; otherwise returns false.

Definition at line 1304 of file qfontmetrics.cpp.

◆ leading()

qreal QFontMetricsF::leading ( ) const

Returns the leading of the font.

This is the natural inter-line spacing.

See also: height(), lineSpacing()

Definition at line 1199 of file qfontmetrics.cpp.

◆ leftBearing()

qreal QFontMetricsF::leftBearing ( QChar ch ) const

Returns the left bearing of character ch in the font.

The left bearing is the right-ward distance of the left-most pixel of the character from the logical origin of the character. This value is negative if the pixels of the character extend to the left of the logical origin.

See horizontalAdvance() for a graphical description of this metric.

See also: rightBearing(), minLeftBearing(), horizontalAdvance()

Definition at line 1326 of file qfontmetrics.cpp.

◆ lineSpacing()

qreal QFontMetricsF::lineSpacing ( ) const

Returns the distance from one base line to the next.

This value is always equal to leading()+height().

See also: height(), leading()

Definition at line 1213 of file qfontmetrics.cpp.

◆ lineWidth()

qreal QFontMetricsF::lineWidth ( ) const

Returns the width of the underline and strikeout lines, adjusted for the point size of the font.

See also: underlinePos(), overlinePos(), strikeOutPos()

Definition at line 1842 of file qfontmetrics.cpp.

◆ maxWidth()

qreal QFontMetricsF::maxWidth ( ) const

Returns the width of the widest character in the font.

Definition at line 1257 of file qfontmetrics.cpp.

◆ minLeftBearing()

qreal QFontMetricsF::minLeftBearing ( ) const

Returns the minimum left bearing of the font.

This is the smallest leftBearing(char) of all characters in the font.

Note that this function can be very slow if the font is large.

See also: minRightBearing(), leftBearing()

Definition at line 1230 of file qfontmetrics.cpp.

◆ minRightBearing()

qreal QFontMetricsF::minRightBearing ( ) const

Returns the minimum right bearing of the font.

This is the smallest rightBearing(char) of all characters in the font.

Note that this function can be very slow if the font is large.

See also: minLeftBearing(), rightBearing()

Definition at line 1247 of file qfontmetrics.cpp.

◆ operator!=()

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

inline

This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.Returns true if the font metrics are not equal to the other font metrics; otherwise returns false.

See also: operator==()

Definition at line 150 of file qfontmetrics.h.

◆ operator=() [1/2]

QFontMetricsF & QFontMetricsF::operator= ( const QFontMetrics & other )

Since: 4.2

Assigns other to this object.

Definition at line 1015 of file qfontmetrics.cpp.

◆ operator=() [2/2]

QFontMetricsF & QFontMetricsF::operator= ( const QFontMetricsF & fm )

Assigns the font metrics fm to this font metrics object.

Definition at line 1093 of file qfontmetrics.cpp.

◆ operator==()

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

Returns true if the font metrics are equal to the other font metrics; otherwise returns false.

Two font metrics are considered equal if they were constructed from the same QFont and the paint devices they were constructed for are considered to be compatible.

Definition at line 1107 of file qfontmetrics.cpp.

◆ overlinePos()

qreal QFontMetricsF::overlinePos ( ) const

Returns the distance from the base line to where an overline should be drawn.

See also: underlinePos(), strikeOutPos(), lineWidth()

Definition at line 1820 of file qfontmetrics.cpp.

◆ rightBearing()

qreal QFontMetricsF::rightBearing ( QChar ch ) const

Returns the right bearing of character ch in the font.

The right bearing is the left-ward distance of the right-most pixel of the character from the logical origin of a subsequent character. This value is negative if the pixels of the character extend to the right of the horizontalAdvance() of the character.

See horizontalAdvance() for a graphical description of this metric.

See also: leftBearing(), minRightBearing(), horizontalAdvance()

Definition at line 1353 of file qfontmetrics.cpp.

◆ size()

QSizeF QFontMetricsF::size	(	int	flags,
		const QString &	text,
		int	tabStops = 0,
		int *	tabArray = nullptr ) const

Returns the size in pixels of the characters in the given text.

The flags argument is the bitwise OR of the following flags: \list

Qt::TextSingleLine ignores newline characters.
Qt::TextExpandTabs expands tabs (see below)
Qt::TextShowMnemonic interprets "&x" as \underline{x}; i.e., underlined.
Qt::TextWordWrap breaks the text to fit the rectangle. \endlist

These flags are defined in the \l{Qt::TextFlag} enum.

If Qt::TextExpandTabs is set in flags, the following behavior is used to interpret tab characters in the text: \list

If tabArray is non-null, it specifies a 0-terminated sequence of pixel-positions for tabs in the text.
If tabStops is non-zero, it is used as the tab spacing (in pixels). \endlist

Newline characters are processed as line breaks.

Note: Despite the different actual character heights, the heights of the bounding rectangles of "Yes" and "yes" are the same.

See also: boundingRect()

Definition at line 1691 of file qfontmetrics.cpp.

◆ strikeOutPos()

qreal QFontMetricsF::strikeOutPos ( ) const

Returns the distance from the base line to where the strikeout line should be drawn.

See also: underlinePos(), overlinePos(), lineWidth()

Definition at line 1831 of file qfontmetrics.cpp.

◆ swap()

void QFontMetricsF::swap ( QFontMetricsF & other )

inlinenoexcept

Since: 5.0 \memberswap{font metrics instance}

Definition at line 106 of file qfontmetrics.h.

◆ tightBoundingRect() [1/2]

QRectF QFontMetricsF::tightBoundingRect ( const QString & text ) const

Since: 4.3

Returns a tight bounding rectangle around the characters in the string specified by text. The bounding rectangle always covers at least the set of pixels the text would cover if drawn at (0, 0).

Note that the bounding rectangle may extend to the left of (0, 0), e.g. for italicized fonts, and that the width of the returned rectangle might be different than what the horizontalAdvance() method returns.

If you want to know the advance width of the string (to lay out a set of strings next to each other), use horizontalAdvance() instead.

Newline characters are processed as normal characters, not as linebreaks.

See also: horizontalAdvance(), height(), boundingRect()

Definition at line 1717 of file qfontmetrics.cpp.

◆ tightBoundingRect() [2/2]

QRectF QFontMetricsF::tightBoundingRect	(	const QString &	text,
		const QTextOption &	option ) const

Returns a tight bounding rectangle around the characters in the string specified by text laid out using option.

The bounding rectangle always covers at least the set of pixels the text would cover if drawn at (0,0).

Note that the bounding rectangle may extend to the left of (0, 0), e.g. for italicized fonts, and that the width of the returned rectangle might be different than what the horizontalAdvance() method returns.

If you want to know the advance width of the string (to lay out a set of strings next to each other), use horizontalAdvance() instead.

Newline characters are processed as normal characters, not as linebreaks.

Since: 6.3

See also: horizontalAdvance(), height(), boundingRect()

Definition at line 1749 of file qfontmetrics.cpp.

◆ underlinePos()

qreal QFontMetricsF::underlinePos ( ) const

Returns the distance from the base line to where an underscore should be drawn.

See also: overlinePos(), strikeOutPos(), lineWidth()

Definition at line 1807 of file qfontmetrics.cpp.

◆ xHeight()

qreal QFontMetricsF::xHeight ( ) const

Returns the 'x' height of the font.

This is often but not always the same as the height of the character 'x'.

Definition at line 1268 of file qfontmetrics.cpp.

The documentation for this class was generated from the following files:

qtbase/src/gui/text/qfontmetrics.h (f497c513b105c607ba373fa35bb646dea40ae883)
qtbase/src/gui/text/qfontmetrics.cpp (de41c16db887660221996e1ddee06484ce0d49f8)

Public Member Functions

Detailed Description

Constructor & Destructor Documentation

◆ QFontMetricsF() [1/5]

◆ QFontMetricsF() [2/5]

◆ QFontMetricsF() [3/5]

◆ QFontMetricsF() [4/5]

◆ QFontMetricsF() [5/5]

◆ ~QFontMetricsF()

Member Function Documentation

◆ ascent()

◆ averageCharWidth()

◆ boundingRect() [1/4]

◆ boundingRect() [2/4]

◆ boundingRect() [3/4]

◆ boundingRect() [4/4]

◆ capHeight()

◆ descent()

◆ elidedText()

◆ fontDpi()

◆ height()

◆ horizontalAdvance() [1/3]

◆ horizontalAdvance() [2/3]

◆ horizontalAdvance() [3/3]

◆ inFont()

◆ inFontUcs4()

◆ leading()

◆ leftBearing()

◆ lineSpacing()

◆ lineWidth()

◆ maxWidth()

◆ minLeftBearing()

◆ minRightBearing()

◆ operator!=()

◆ operator=() [1/2]

◆ operator=() [2/2]

◆ operator==()

◆ overlinePos()

◆ rightBearing()

◆ size()

◆ strikeOutPos()

◆ swap()

◆ tightBoundingRect() [1/2]

◆ tightBoundingRect() [2/2]

◆ underlinePos()

◆ xHeight()