Qt: qtbase/src/gui/text/freetype/qfontengine_ft.cpp File Reference

Qt

Internal/Contributor docs for the Qt SDK. <b>Note:</b> These are NOT official API docs; those are found <a href='https://doc.qt.io/'>here</a>.

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#include "qdir.h"
#include "qmetatype.h"
#include "qtextstream.h"
#include "qvariant.h"
#include "qfontengine_ft_p.h"
#include "private/qimage_p.h"
#include <private/qstringiterator_p.h>
#include <qguiapplication.h>
#include <qscreen.h>
#include <qpa/qplatformscreen.h>
#include <QtCore/QUuid>
#include <QtCore/QLoggingCategory>
#include <QtGui/QPainterPath>
#include "qfile.h"
#include "qfileinfo.h"
#include <qscopedvaluerollback.h>
#include "qthreadstorage.h"
#include <qmath.h>
#include <qendian.h>
#include <memory>
#include <ft2build.h>

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Classes
class	QtFreetypeData

struct	QtFreetypeData::FaceStyle

Macros
#define	QT_MAX_CACHED_GLYPH_SIZE 64

#define	FLOOR(x) ((x) & -64)

#define	CEIL(x) (((x)+63) & -64)

#define	TRUNC(x) ((x) >> 6)

#define	ROUND(x) (((x)+32) & -64)

#define	GLYPH2PATH_DEBUG QT_NO_QDEBUG_MACRO

Functions
static bool	ft_getSfntTable (void user_data, uint tag, uchar buffer, uint *length)

bool	operator== (const QtFreetypeData::FaceStyle &style1, const QtFreetypeData::FaceStyle &style2)

size_t	qHash (const QtFreetypeData::FaceStyle &style, size_t seed)

QtFreetypeData *	qt_getFreetypeData ()

FT_Library	qt_getFreetype ()

QByteArray	qt_fontdata_from_index (int)

static int	computeFaceIndex (const QString &faceFileName, const QString &styleName)

static void	scaleOutline (FT_Face face, FT_GlyphSlot g, FT_Fixed x_scale, FT_Fixed y_scale)

void	qt_addBitmapToPath (qreal x0, qreal y0, const uchar image_data, int bpl, int w, int h, QPainterPath path)

static void	convertRGBToARGB (const uchar src, uint dst, int width, int height, int src_pitch, bool bgr)

static void	convertRGBToARGB_V (const uchar src, uint dst, int width, int height, int src_pitch, bool bgr)

static QFontEngine::SubpixelAntialiasingType	subpixelAntialiasingTypeHint ()

static void	dont_delete (void *)

static FT_UShort	calculateActualWeight (QFreetypeFace *freetypeFace, FT_Face face, QFontEngine::FaceId faceId)

static bool	calculateActualItalic (QFreetypeFace *freetypeFace, FT_Face face, QFontEngine::FaceId faceId)

static bool	areMetricsTooLarge (const QFontEngineFT::GlyphInfo &info)

static void	transformBoundingBox (int left, int top, int right, int bottom, FT_Matrix *matrix)

static FT_Matrix	QTransformToFTMatrix (const QTransform &matrix)

static QImage	alphaMapFromGlyphData (QFontEngineFT::Glyph *glyph, QFontEngine::GlyphFormat glyphFormat)

static bool	is2dRotation (const QTransform &t)

Variables
static QFontEngineFT::Glyph	emptyGlyph

static const QFontEngine::HintStyle	ftInitialDefaultHintStyle

Macro Definition Documentation

◆ CEIL

#define CEIL ( x ) (((x)+63) & -64)

Definition at line 63 of file qfontengine_ft.cpp.

Referenced by QFontEngineFT::alphaMapBoundingBox(), QFontEngineFT::boundingBox(), QFontEngineFT::boundingBox(), and QFontEngineFT::loadGlyph().

◆ FLOOR

#define FLOOR ( x ) ((x) & -64)

Definition at line 62 of file qfontengine_ft.cpp.

Referenced by QFontEngineFT::alphaMapBoundingBox(), QFontEngineFT::boundingBox(), QFontEngineFT::boundingBox(), and QFontEngineFT::loadGlyph().

◆ GLYPH2PATH_DEBUG

#define GLYPH2PATH_DEBUG QT_NO_QDEBUG_MACRO

Definition at line 565 of file qfontengine_ft.cpp.

Referenced by QFreetypeFace::addGlyphToPath().

◆ QT_MAX_CACHED_GLYPH_SIZE

#define QT_MAX_CACHED_GLYPH_SIZE 64

Definition at line 53 of file qfontengine_ft.cpp.

◆ ROUND

#define ROUND ( x ) (((x)+32) & -64)

Definition at line 65 of file qfontengine_ft.cpp.

Referenced by QFontEngineFT::alphaMapBoundingBox(), QFontEngineFT::boundingBox(), and QFontEngineFT::loadGlyph().

◆ TRUNC

#define TRUNC ( x ) ((x) >> 6)

Definition at line 64 of file qfontengine_ft.cpp.

Function Documentation

◆ alphaMapFromGlyphData()

static QImage alphaMapFromGlyphData	(	QFontEngineFT::Glyph *	glyph,
		QFontEngine::GlyphFormat	glyphFormat )

inlinestatic

Definition at line 1988 of file qfontengine_ft.cpp.

References QFontEngine::Glyph::data, QFontEngine::Format_A32, QFontEngine::Format_A8, QImage::Format_Alpha8, QImage::Format_Invalid, QImage::Format_Mono, QFontEngine::Format_Mono, QImage::Format_RGB32, QFontEngine::glyphFormat, QFontEngine::Glyph::height, Qt::white, and QFontEngine::Glyph::width.

Referenced by QFontEngineFT::alphaMapForGlyph(), and QFontEngineFT::alphaRGBMapForGlyph().

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◆ areMetricsTooLarge()

static bool areMetricsTooLarge ( const QFontEngineFT::GlyphInfo & info )

inlinestatic

Definition at line 1058 of file qfontengine_ft.cpp.

References info.

Referenced by QFontEngineFT::loadGlyph().

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◆ calculateActualItalic()

static bool calculateActualItalic	(	QFreetypeFace *	freetypeFace,
		FT_Face	face,
		QFontEngine::FaceId	faceId )

static

Definition at line 853 of file qfontengine_ft.cpp.

References QFontEngine::FaceId::instanceIndex, QFont::Tag::value(), and var.

Referenced by QFontEngineFT::init().

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◆ calculateActualWeight()

static FT_UShort calculateActualWeight	(	QFreetypeFace *	freetypeFace,
		FT_Face	face,
		QFontEngine::FaceId	faceId )

static

Definition at line 836 of file qfontengine_ft.cpp.

References QFontEngine::FaceId::instanceIndex, QFont::Tag::value(), and var.

Referenced by QFontEngineFT::init().

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◆ computeFaceIndex()

static int computeFaceIndex	(	const QString &	faceFileName,
		const QString &	styleName )

static

Definition at line 407 of file qfontengine_ft.cpp.

References QByteArray::constData(), error, Qt::hex(), qDebug, qt_getFreetype(), and QString::toUtf8().

Referenced by QFreetypeFace::getFaceIndexByStyleName().

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◆ convertRGBToARGB()

static void convertRGBToARGB	(	const uchar *	src,
		uint *	dst,
		int	width,
		int	height,
		int	src_pitch,
		bool	bgr )

inlinestatic

Definition at line 671 of file qfontengine_ft.cpp.

References red.

Referenced by QFontEngineFT::loadGlyph().

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◆ convertRGBToARGB_V()

static void convertRGBToARGB_V	(	const uchar *	src,
		uint *	dst,
		int	width,
		int	height,
		int	src_pitch,
		bool	bgr )

inlinestatic

Definition at line 688 of file qfontengine_ft.cpp.

References red.

Referenced by QFontEngineFT::loadGlyph().

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◆ dont_delete()

static void dont_delete ( void * )

static

Definition at line 834 of file qfontengine_ft.cpp.

Referenced by QFontEngineFT::init().

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◆ ft_getSfntTable()

static bool ft_getSfntTable	(	void *	user_data,
		uint	tag,
		uchar *	buffer,
		uint *	length )

static

Definition at line 67 of file qfontengine_ft.cpp.

References Q_ASSERT, tag, and user_data.

Referenced by QFreetypeFace::getSfntTable(), QFontEngineFT::getSfntTableData(), and QFontEngineFT::init().

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◆ is2dRotation()

static bool is2dRotation ( const QTransform & t )

inlinestatic

Definition at line 2039 of file qfontengine_ft.cpp.

References qFuzzyCompare().

Referenced by QFontEngineFT::loadGlyphFor().

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◆ operator==()

bool operator==	(	const QtFreetypeData::FaceStyle &	style1,
		const QtFreetypeData::FaceStyle &	style2 )

inline

Definition at line 128 of file qfontengine_ft.cpp.

◆ qHash()

size_t qHash	(	const QtFreetypeData::FaceStyle &	style,
		size_t	seed )

inline

Definition at line 133 of file qfontengine_ft.cpp.

References QtFreetypeData::FaceStyle::faceFileName, qHashMulti(), seed, and QtFreetypeData::FaceStyle::styleName.

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◆ qt_addBitmapToPath()

void qt_addBitmapToPath	(	qreal	x0,
		qreal	y0,
		const uchar *	image_data,
		int	bpl,
		int	w,
		int	h,
		QPainterPath *	path )

extern

Definition at line 680 of file qfontengine.cpp.

References collectSingleContour(), EdgeDown, EdgeLeft, EdgeRight, EdgeUp, GRID, and SET.

Referenced by QFontEngine::addBitmapFontToPath(), and QFreetypeFace::addBitmapToPath().

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◆ qt_fontdata_from_index()

QByteArray qt_fontdata_from_index ( int index )

extern

Definition at line 2153 of file qfontdatabase.cpp.

References QFontDatabasePrivate::instance().

Referenced by QFreetypeFace::getFace().

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◆ qt_getFreetype()

FT_Library qt_getFreetype ( )

Definition at line 156 of file qfontengine_ft.cpp.

References Q_ASSERT, and qt_getFreetypeData().

Referenced by QFreeTypeFontDatabase::addNamedInstancesForFace(), QFreeTypeFontDatabase::addTTFile(), computeFaceIndex(), QFreetypeFace::getFace(), QFontEngineFT::init(), and queryFont().

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◆ qt_getFreetypeData()

QtFreetypeData * qt_getFreetypeData ( )

Definition at line 140 of file qfontengine_ft.cpp.

Referenced by QFreetypeFace::getFace(), QFreetypeFace::getFaceIndexByStyleName(), qt_getFreetype(), and QFreetypeFace::release().

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◆ QTransformToFTMatrix()

static FT_Matrix QTransformToFTMatrix ( const QTransform & matrix )

inlinestatic

Definition at line 1497 of file qfontengine_ft.cpp.

Referenced by QFontEngineFT::loadGlyphFor().

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◆ scaleOutline()

static void scaleOutline	(	FT_Face	face,
		FT_GlyphSlot	g,
		FT_Fixed	x_scale,
		FT_Fixed	y_scale )

static

Definition at line 552 of file qfontengine_ft.cpp.

Referenced by QFreetypeFace::addGlyphToPath().

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◆ subpixelAntialiasingTypeHint()

static QFontEngine::SubpixelAntialiasingType subpixelAntialiasingTypeHint ( )

static

Definition at line 702 of file qfontengine_ft.cpp.

References QScreen::handle(), QGuiApplication::primaryScreen, screen, and QPlatformScreen::subpixelAntialiasingTypeHint().

Referenced by QFontEngineFT::create().

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◆ transformBoundingBox()

static void transformBoundingBox	(	int *	left,
		int *	top,
		int *	right,
		int *	bottom,
		FT_Matrix *	matrix )

inlinestatic

Definition at line 1064 of file qfontengine_ft.cpp.

References vector.

Referenced by QFontEngineFT::loadGlyph().

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Variable Documentation

◆ emptyGlyph

QFontEngineFT::Glyph emptyGlyph

static

Definition at line 82 of file qfontengine_ft.cpp.

Referenced by QFontEngineFT::alphaMapBoundingBox(), QFontEngineFT::alphaMapForGlyph(), QFontEngineFT::alphaRGBMapForGlyph(), QFontEngineFT::bitmapForGlyph(), QFontEngineFT::boundingBox(), QFontEngineFT::boundingBox(), QFontEngineFT::loadGlyph(), and QFontEngineFT::recalcAdvances().

◆ ftInitialDefaultHintStyle

const QFontEngine::HintStyle ftInitialDefaultHintStyle

static

Initial value:

=
 
    QFontEngineFT::HintNone

Definition at line 84 of file qfontengine_ft.cpp.

Referenced by QFontEngineFT::QFontEngineFT(), and QFontEngineFT::setQtDefaultHintStyle().