QgsPrecalculatedTextMetrics Class Reference

Contains precalculated properties regarding text metrics for text to be rendered at a later stage. More...

#include <qgstextmetrics.h>

Public Member Functions
	QgsPrecalculatedTextMetrics (const QStringList &graphemes, const QVector< double > &characterWidths, const QVector< double > &characterHeights, const QVector< double > &characterDescents)
	Constructor for QgsPrecalculatedTextMetrics.
double	characterDescent (int position) const
	Returns the descent of the character at the specified position.
double	characterHeight (int position) const
	Returns the character height of the character at the specified position (actually font metrics height, not individual character height).
double	characterWidth (int position) const
	Returns the width of the character at the specified position.
int	count () const
	Returns the total number of characters.
QString	grapheme (int index) const
	Returns the grapheme at the specified index.
QgsTextCharacterFormat	graphemeFormat (int index) const
	Returns the character format for the grapheme at the specified index.
int	graphemeFormatCount () const
	Returns the number of grapheme formats available.
QStringList	graphemes () const
	Returns the list of graphemes contained in the text.
double	maximumCharacterDescent () const
	Returns the maximum descent of any character found in the text.
double	maximumCharacterHeight () const
	Returns the maximum height of any character found in the text.
void	setGraphemeFormats (const QVector< QgsTextCharacterFormat > &formats)
	Sets the character formats associated with the text graphemes().

Detailed Description

Contains precalculated properties regarding text metrics for text to be rendered at a later stage.

Note

Not available in Python bindings

Since

QGIS 3.20

Definition at line 34 of file qgstextmetrics.h.

Constructor & Destructor Documentation

QgsPrecalculatedTextMetrics()

QgsPrecalculatedTextMetrics::QgsPrecalculatedTextMetrics ( const QStringList &  graphemes, const QVector< double > &  characterWidths, const QVector< double > &  characterHeights, const QVector< double > &  characterDescents  )

inline

Constructor for QgsPrecalculatedTextMetrics.

Parameters

graphemes	list of graphemes contained in the text
characterWidths	vector of character widths
characterHeights	height of characters
characterDescents	descent of characters

Definition at line 45 of file qgstextmetrics.h.

Member Function Documentation

characterDescent()

double QgsPrecalculatedTextMetrics::characterDescent ( int  position ) const

inline

Returns the descent of the character at the specified position.

Since

QGIS 3.28

Definition at line 86 of file qgstextmetrics.h.

characterHeight()

double QgsPrecalculatedTextMetrics::characterHeight ( int  position ) const

inline

Returns the character height of the character at the specified position (actually font metrics height, not individual character height).

Since

QGIS 3.28

Definition at line 79 of file qgstextmetrics.h.

characterWidth()

double QgsPrecalculatedTextMetrics::characterWidth ( int  position ) const

inline

Returns the width of the character at the specified position.

Definition at line 72 of file qgstextmetrics.h.

count()

int QgsPrecalculatedTextMetrics::count ( ) const

inline

Returns the total number of characters.

Definition at line 67 of file qgstextmetrics.h.

grapheme()

QString QgsPrecalculatedTextMetrics::grapheme ( int  index ) const

inline

Returns the grapheme at the specified index.

Definition at line 110 of file qgstextmetrics.h.

graphemeFormat()

QgsTextCharacterFormat QgsPrecalculatedTextMetrics::graphemeFormat ( int  index ) const

inline

Returns the character format for the grapheme at the specified index.

Definition at line 125 of file qgstextmetrics.h.

graphemeFormatCount()

int QgsPrecalculatedTextMetrics::graphemeFormatCount ( ) const

inline

Returns the number of grapheme formats available.

Definition at line 120 of file qgstextmetrics.h.

graphemes()

QStringList QgsPrecalculatedTextMetrics::graphemes ( ) const

inline

Returns the list of graphemes contained in the text.

Definition at line 105 of file qgstextmetrics.h.

maximumCharacterDescent()

double QgsPrecalculatedTextMetrics::maximumCharacterDescent ( ) const

inline

Returns the maximum descent of any character found in the text.

Since

QGIS 3.28

Definition at line 100 of file qgstextmetrics.h.

maximumCharacterHeight()

double QgsPrecalculatedTextMetrics::maximumCharacterHeight ( ) const

inline

Returns the maximum height of any character found in the text.

Since

QGIS 3.28

Definition at line 93 of file qgstextmetrics.h.

setGraphemeFormats()

void QgsPrecalculatedTextMetrics::setGraphemeFormats ( const QVector< QgsTextCharacterFormat > &  formats )

inline

Sets the character formats associated with the text graphemes().

Definition at line 115 of file qgstextmetrics.h.

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

• /build/qgis-3.99.0+git20250718+f78f5286a64+99sid/src/core/textrenderer/qgstextmetrics.h