Subclass of vtkFreeTypeTools that uses system installed fonts. More...

#include <vtkFontConfigFreeTypeTools.h>

Inheritance diagram for vtkFontConfigFreeTypeTools:

Collaboration diagram for vtkFontConfigFreeTypeTools:

Public Types
typedef vtkFreeTypeTools	Superclass

Public Types inherited from vtkFreeTypeTools
typedef vtkObject	Superclass

Public Member Functions
virtual vtkTypeBool	IsA (const char *type)
	Return 1 if this class is the same type of (or a subclass of) the named class. More...

vtkFontConfigFreeTypeTools *	NewInstance () const

void	PrintSelf (ostream &os, vtkIndent indent) override
	Methods invoked by print to print information about the object including superclasses. More...

Public Member Functions inherited from vtkFreeTypeTools
vtkFreeTypeTools *	NewInstance () const

FT_Library *	GetLibrary ()
	Get the FreeType library singleton. More...

FaceMetrics	GetFaceMetrics (vtkTextProperty *tprop)
	Return some metrics about a font face. More...

GlyphOutline	GetUnscaledGlyphOutline (vtkTextProperty *tprop, vtkTypeUInt32 charId)
	Return a generic outline of a glyph with some additional metadata. More...

std::array< int, 2 >	GetUnscaledKerning (vtkTextProperty *tprop, vtkTypeUInt32 leftChar, vtkTypeUInt32 rightChar)
	Return a 2D vector detailing the unscaled kerning offset for a pair of characters. More...

virtual void	SetDebugTextures (bool)
	If true, images produced by RenderString will have a transparent grey background and set the justification anchor texel to bright yellow. More...

virtual bool	GetDebugTextures ()
	If true, images produced by RenderString will have a transparent grey background and set the justification anchor texel to bright yellow. More...

virtual void	DebugTexturesOn ()
	If true, images produced by RenderString will have a transparent grey background and set the justification anchor texel to bright yellow. More...

virtual void	DebugTexturesOff ()
	If true, images produced by RenderString will have a transparent grey background and set the justification anchor texel to bright yellow. More...

virtual void	SetMaximumNumberOfFaces (unsigned int)
	Set/Get the maximum number of faces (FT_Face), sizes (FT_Size) and bytes used by the cache. More...

virtual unsigned int	GetMaximumNumberOfFaces ()
	Set/Get the maximum number of faces (FT_Face), sizes (FT_Size) and bytes used by the cache. More...

virtual void	SetMaximumNumberOfSizes (unsigned int)
	Set/Get the maximum number of faces (FT_Face), sizes (FT_Size) and bytes used by the cache. More...

virtual unsigned int	GetMaximumNumberOfSizes ()
	Set/Get the maximum number of faces (FT_Face), sizes (FT_Size) and bytes used by the cache. More...

virtual void	SetMaximumNumberOfBytes (unsigned long)
	Set/Get the maximum number of faces (FT_Face), sizes (FT_Size) and bytes used by the cache. More...

virtual unsigned long	GetMaximumNumberOfBytes ()
	Set/Get the maximum number of faces (FT_Face), sizes (FT_Size) and bytes used by the cache. More...

bool	GetBoundingBox (vtkTextProperty *tprop, const vtkStdString &str, int dpi, int bbox[4])
	Given a text property and a string, get the bounding box {xmin, xmax, ymin, ymax} of the rendered string in pixels. More...

bool	GetMetrics (vtkTextProperty *tprop, const vtkStdString &str, int dpi, vtkTextRenderer::Metrics &metrics)
	Given a text property and a string, get the metrics of the rendered string. More...

bool	RenderString (vtkTextProperty tprop, const vtkStdString &str, int dpi, vtkImageData data, int textDims[2]=nullptr)
	Given a text property and a string, this function initializes the vtkImageData *data and renders it in a vtkImageData. More...

bool	StringToPath (vtkTextProperty tprop, const vtkStdString &str, int dpi, vtkPath path)
	Given a text property and a string, this function populates the vtkPath path with the outline of the rendered string. More...

int	GetConstrainedFontSize (const vtkStdString &str, vtkTextProperty *tprop, int dpi, int targetWidth, int targetHeight)
	This function returns the font size (in points) required to fit the string in the target rectangle. More...

void	MapTextPropertyToId (vtkTextProperty tprop, size_t tprop_cache_id)
	Given a text property 'tprop', get its unique ID in our cache framework. More...

void	MapIdToTextProperty (size_t tprop_cache_id, vtkTextProperty *tprop)
	Given a text property 'tprop', get its unique ID in our cache framework. More...

virtual void	SetScaleToPowerTwo (bool)
	Set whether the image produced should be scaled up to the nearest power of. More...

virtual bool	GetScaleToPowerTwo ()
	Set whether the image produced should be scaled up to the nearest power of. More...

virtual void	ScaleToPowerTwoOn ()
	Set whether the image produced should be scaled up to the nearest power of. More...

virtual void	ScaleToPowerTwoOff ()
	Set whether the image produced should be scaled up to the nearest power of. More...

virtual void	SetForceCompiledFonts (bool)
	Force use of the fonts compiled into VTK, ignoring any FontConfig or embedded fonts. More...

virtual bool	GetForceCompiledFonts ()
	Force use of the fonts compiled into VTK, ignoring any FontConfig or embedded fonts. More...

virtual void	ForceCompiledFontsOn ()
	Force use of the fonts compiled into VTK, ignoring any FontConfig or embedded fonts. More...

virtual void	ForceCompiledFontsOff ()
	Force use of the fonts compiled into VTK, ignoring any FontConfig or embedded fonts. More...

Public Member Functions inherited from vtkObject
	vtkBaseTypeMacro (vtkObject, vtkObjectBase)

virtual void	DebugOn ()
	Turn debugging output on. More...

virtual void	DebugOff ()
	Turn debugging output off. More...

bool	GetDebug ()
	Get the value of the debug flag. More...

void	SetDebug (bool debugFlag)
	Set the value of the debug flag. More...

virtual void	Modified ()
	Update the modification time for this object. More...

virtual vtkMTimeType	GetMTime ()
	Return this object's modified time. More...

void	RemoveObserver (unsigned long tag)

void	RemoveObservers (unsigned long event)

void	RemoveObservers (const char *event)

void	RemoveAllObservers ()

vtkTypeBool	HasObserver (unsigned long event)

vtkTypeBool	HasObserver (const char *event)

vtkTypeBool	InvokeEvent (unsigned long event)

vtkTypeBool	InvokeEvent (const char *event)

std::string	GetObjectDescription () const override
	The object description printed in messages and PrintSelf output. More...

unsigned long	AddObserver (unsigned long event, vtkCommand *, float priority=0.0f)
	Allow people to add/remove/invoke observers (callbacks) to any VTK object. More...

unsigned long	AddObserver (const char event, vtkCommand , float priority=0.0f)
	Allow people to add/remove/invoke observers (callbacks) to any VTK object. More...

vtkCommand *	GetCommand (unsigned long tag)
	Allow people to add/remove/invoke observers (callbacks) to any VTK object. More...

void	RemoveObserver (vtkCommand *)
	Allow people to add/remove/invoke observers (callbacks) to any VTK object. More...

void	RemoveObservers (unsigned long event, vtkCommand *)
	Allow people to add/remove/invoke observers (callbacks) to any VTK object. More...

void	RemoveObservers (const char event, vtkCommand )
	Allow people to add/remove/invoke observers (callbacks) to any VTK object. More...

vtkTypeBool	HasObserver (unsigned long event, vtkCommand *)
	Allow people to add/remove/invoke observers (callbacks) to any VTK object. More...

vtkTypeBool	HasObserver (const char event, vtkCommand )
	Allow people to add/remove/invoke observers (callbacks) to any VTK object. More...

template<class U , class T >
unsigned long	AddObserver (unsigned long event, U observer, void(T::*callback)(), float priority=0.0f)
	Overloads to AddObserver that allow developers to add class member functions as callbacks for events. More...

template<class U , class T >
unsigned long	AddObserver (unsigned long event, U observer, void(T::callback)(vtkObject , unsigned long, void *), float priority=0.0f)
	Overloads to AddObserver that allow developers to add class member functions as callbacks for events. More...

template<class U , class T >
unsigned long	AddObserver (unsigned long event, U observer, bool(T::callback)(vtkObject , unsigned long, void *), float priority=0.0f)
	Allow user to set the AbortFlagOn() with the return value of the callback method. More...

vtkTypeBool	InvokeEvent (unsigned long event, void *callData)
	This method invokes an event and return whether the event was aborted or not. More...

vtkTypeBool	InvokeEvent (const char event, void callData)
	This method invokes an event and return whether the event was aborted or not. More...

virtual void	SetObjectName (const std::string &objectName)
	Set/get the name of this object for reporting purposes. More...

virtual std::string	GetObjectName () const
	Set/get the name of this object for reporting purposes. More...

Public Member Functions inherited from vtkObjectBase
const char *	GetClassName () const
	Return the class name as a string. More...

virtual vtkIdType	GetNumberOfGenerationsFromBase (const char *name)
	Given the name of a base class of this class type, return the distance of inheritance between this class type and the named class (how many generations of inheritance are there between this class and the named class). More...

virtual void	Delete ()
	Delete a VTK object. More...

virtual void	FastDelete ()
	Delete a reference to this object. More...

void	InitializeObjectBase ()

void	Print (ostream &os)
	Print an object to an ostream. More...

void	Register (vtkObjectBase *o)
	Increase the reference count (mark as used by another object). More...

virtual void	UnRegister (vtkObjectBase *o)
	Decrease the reference count (release by another object). More...

int	GetReferenceCount ()
	Return the current reference count of this object. More...

void	SetReferenceCount (int)
	Sets the reference count. More...

bool	GetIsInMemkind () const
	A local state flag that remembers whether this object lives in the normal or extended memory space. More...

virtual void	PrintHeader (ostream &os, vtkIndent indent)
	Methods invoked by print to print information about the object including superclasses. More...

virtual void	PrintTrailer (ostream &os, vtkIndent indent)
	Methods invoked by print to print information about the object including superclasses. More...

virtual bool	UsesGarbageCollector () const
	Indicate whether the class uses `vtkGarbageCollector` or not. More...

Static Public Member Functions
static vtkTypeBool	IsTypeOf (const char *type)

static vtkFontConfigFreeTypeTools *	SafeDownCast (vtkObjectBase *o)

static vtkFontConfigFreeTypeTools *	New ()
	Creates a new object of this type, but it is not preferred to use this method directly. More...

static bool	LookupFaceFontConfig (vtkTextProperty tprop, FT_Library lib, FT_Face face)
	Modified version of vtkFreeTypeTools::LookupFace that locates FontConfig faces. More...

Static Public Member Functions inherited from vtkFreeTypeTools
static vtkTypeBool	IsTypeOf (const char *type)

static vtkFreeTypeTools *	SafeDownCast (vtkObjectBase *o)

static vtkFreeTypeTools *	GetInstance ()
	Return the singleton instance with no reference counting. More...

static void	SetInstance (vtkFreeTypeTools *instance)
	Supply a user defined instance. More...

static vtkTypeUInt16	HashString (const char *str)
	Turn a string into a hash. More...

static vtkTypeUInt32	HashBuffer (const void *buffer, size_t n, vtkTypeUInt32 hash=0)
	Hash a buffer of a given length. More...

static bool	LookupFace (vtkTextProperty tprop, FT_Library lib, FT_Face face)
	Lookup and set the FreeType font face face best matching the text property tprop using the compiled Arial, Times, and Courier fonts. More...

Static Public Member Functions inherited from vtkObject
static vtkObject *	New ()
	Create an object with Debug turned off, modified time initialized to zero, and reference counting on. More...

static void	BreakOnError ()
	This method is called when vtkErrorMacro executes. More...

static void	SetGlobalWarningDisplay (vtkTypeBool val)
	This is a global flag that controls whether any debug, warning or error messages are displayed. More...

static void	GlobalWarningDisplayOn ()
	This is a global flag that controls whether any debug, warning or error messages are displayed. More...

static void	GlobalWarningDisplayOff ()
	This is a global flag that controls whether any debug, warning or error messages are displayed. More...

static vtkTypeBool	GetGlobalWarningDisplay ()
	This is a global flag that controls whether any debug, warning or error messages are displayed. More...

Static Public Member Functions inherited from vtkObjectBase
static vtkTypeBool	IsTypeOf (const char *name)
	Return 1 if this class type is the same type of (or a subclass of) the named class. More...

static vtkIdType	GetNumberOfGenerationsFromBaseType (const char *name)
	Given a the name of a base class of this class type, return the distance of inheritance between this class type and the named class (how many generations of inheritance are there between this class and the named class). More...

static vtkObjectBase *	New ()
	Create an object with Debug turned off, modified time initialized to zero, and reference counting on. More...

static void	SetMemkindDirectory (const char *directoryname)
	The name of a directory, ideally mounted -o dax, to memory map an extended memory space within. More...

static bool	GetUsingMemkind ()
	A global state flag that controls whether vtkObjects are constructed in the usual way (the default) or within the extended memory space. More...

Protected Member Functions
virtual vtkObjectBase *	NewInstanceInternal () const

	vtkFontConfigFreeTypeTools ()

	~vtkFontConfigFreeTypeTools () override

FT_Error	CreateFTCManager () override
	Reimplemented from Superclass to use the FontConfig face lookup callback. More...

Protected Member Functions inherited from vtkFreeTypeTools
void	PrepareImageData (vtkImageData *data, int bbox[4])
	This function initializes the extent of the ImageData to eventually receive the text stored in str. More...

void	RenderBackground (vtkTextProperty tprop, vtkImageData image, ImageMetaData &metaData)
	Draw the background quad on the image. More...

bool	GetSize (vtkTextProperty tprop, FT_Size size)
	Given a text property, get the corresponding FreeType size object (a structure storing both a face and a specific size metric). More...

bool	GetFace (vtkTextProperty tprop, FT_Face face)
	Given a text property, get the corresponding FreeType face. More...

bool	GetGlyphIndex (vtkTextProperty tprop, FT_UInt32 c, FT_UInt gindex)
	Given a text property and a character, get the corresponding FreeType glyph index. More...

	vtkFreeTypeTools ()

	~vtkFreeTypeTools () override

bool	GetFace (vtkTextProperty *prop, size_t &prop_cache_id, FT_Face &face, bool &face_has_kerning)
	Attempt to get the typeface of the specified font. More...

void	InitializeCacheManager ()

void	ReleaseCacheManager ()

bool	PrepareMetaData (vtkTextProperty *tprop, int dpi, MetaData &metaData)

bool	PrepareImageMetaData (vtkTextProperty tprop, vtkImageData image, ImageMetaData &metaData)

FT_Bitmap *	GetBitmap (FT_UInt32 c, size_t prop_cache_id, int prop_font_size, FT_UInt &gindex, FT_BitmapGlyph &bitmap_glyph)
	Now attempt to get the bitmap for the specified character. More...

FT_Bitmap *	GetBitmap (FT_UInt32 c, FTC_Scaler scaler, FT_UInt &gindex, FT_BitmapGlyph &bitmap_glyph)
	Now attempt to get the bitmap for the specified character. More...

FT_Outline *	GetOutline (FT_UInt32 c, size_t prop_cache_id, int prop_font_size, FT_UInt &gindex, FT_OutlineGlyph &outline_glyph)
	Attempt to get the outline for the specified character. More...

FT_Outline *	GetOutline (FT_UInt32 c, FTC_Scaler scaler, FT_UInt &gindex, FT_OutlineGlyph &outline_glyph)
	Attempt to get the outline for the specified character. More...

FTC_Manager *	GetCacheManager ()
	Get the FreeType cache manager, image cache and charmap cache. More...

FTC_ImageCache *	GetImageCache ()
	Get the FreeType cache manager, image cache and charmap cache. More...

FTC_CMapCache *	GetCMapCache ()
	Get the FreeType cache manager, image cache and charmap cache. More...

bool	GetGlyph (vtkTextProperty tprop, FT_UInt32 c, FT_Glyph glyph, int request=GLYPH_REQUEST_DEFAULT)
	Given a text property and a character, get the corresponding FreeType glyph. More...

bool	GetSize (size_t tprop_cache_id, int font_size, FT_Size *size)
	Given a text property and a character, get the corresponding FreeType glyph. More...

bool	GetSize (FTC_Scaler scaler, FT_Size *size)
	Given a text property and a character, get the corresponding FreeType glyph. More...

bool	GetFace (size_t tprop_cache_id, FT_Face *face)
	Given a text property and a character, get the corresponding FreeType glyph. More...

bool	GetGlyphIndex (size_t tprop_cache_id, FT_UInt32 c, FT_UInt *gindex)
	Given a text property and a character, get the corresponding FreeType glyph. More...

bool	GetGlyph (size_t tprop_cache_id, int font_size, FT_UInt gindex, FT_Glyph *glyph, int request=GLYPH_REQUEST_DEFAULT)
	Given a text property and a character, get the corresponding FreeType glyph. More...

bool	GetGlyph (FTC_Scaler scaler, FT_UInt gindex, FT_Glyph *glyph, int request=GLYPH_REQUEST_DEFAULT)
	Given a text property and a character, get the corresponding FreeType glyph. More...

Protected Member Functions inherited from vtkObject
	vtkObject ()

	~vtkObject () override

void	RegisterInternal (vtkObjectBase *, vtkTypeBool check) override

void	UnRegisterInternal (vtkObjectBase *, vtkTypeBool check) override

void	InternalGrabFocus (vtkCommand mouseEvents, vtkCommand keypressEvents=nullptr)
	These methods allow a command to exclusively grab all events. More...

void	InternalReleaseFocus ()
	These methods allow a command to exclusively grab all events. More...

Protected Member Functions inherited from vtkObjectBase
	vtkObjectBase ()

virtual	~vtkObjectBase ()

virtual void	ReportReferences (vtkGarbageCollector *)

	vtkObjectBase (const vtkObjectBase &)

void	operator= (const vtkObjectBase &)

Additional Inherited Members
Protected Types inherited from vtkFreeTypeTools
enum	{ GLYPH_REQUEST_DEFAULT = 0 , GLYPH_REQUEST_BITMAP = 1 , GLYPH_REQUEST_OUTLINE = 2 }
	Given a text property and a character, get the corresponding FreeType glyph. More...

Static Protected Member Functions inherited from vtkObjectBase
static vtkMallocingFunction	GetCurrentMallocFunction ()

static vtkReallocingFunction	GetCurrentReallocFunction ()

static vtkFreeingFunction	GetCurrentFreeFunction ()

static vtkFreeingFunction	GetAlternateFreeFunction ()

Protected Attributes inherited from vtkFreeTypeTools
bool	ScaleToPowerTwo
	Should the image be scaled to the next highest power of 2? More...

vtkTextPropertyLookup *	TextPropertyLookup
	Lookup table that maps free type font cache face ids to vtkTextProperties. More...

FT_Library *	Library
	FreeType library instance. More...

unsigned int	MaximumNumberOfFaces

unsigned int	MaximumNumberOfSizes

unsigned long	MaximumNumberOfBytes

bool	ForceCompiledFonts

bool	DebugTextures

FTC_Manager *	CacheManager
	The cache manager, image cache and charmap cache. More...

FTC_ImageCache *	ImageCache
	The cache manager, image cache and charmap cache. More...

FTC_CMapCache *	CMapCache
	The cache manager, image cache and charmap cache. More...

Protected Attributes inherited from vtkObject
bool	Debug

vtkTimeStamp	MTime

vtkSubjectHelper *	SubjectHelper

std::string	ObjectName

Protected Attributes inherited from vtkObjectBase
std::atomic< int32_t >	ReferenceCount

vtkWeakPointerBase **	WeakPointers

Static Protected Attributes inherited from vtkFreeTypeTools
static vtkFreeTypeTools *	Instance
	The singleton instance. More...

Detailed Description

Subclass of vtkFreeTypeTools that uses system installed fonts.

vtkFontConfigFreeTypeTools defers to vtkFreeTypeTools for rendering and rasterization, but sources fonts from a FontConfig system lookup. If the lookup fails, the compiled fonts of vtkFreeType are used instead.

Warning: Do not instantiate this class directly. Rather, call vtkFreeTypeTools::GetInstance() to ensure that the singleton design is correctly applied. Be aware that FontConfig lookup is disabled by default. To enable, call vtkFreeTypeTools::GetInstance()->ForceCompiledFontsOff();

Definition at line 29 of file vtkFontConfigFreeTypeTools.h.

Member Typedef Documentation

◆ Superclass

typedef vtkFreeTypeTools vtkFontConfigFreeTypeTools::Superclass

Definition at line 32 of file vtkFontConfigFreeTypeTools.h.

Constructor & Destructor Documentation

◆ vtkFontConfigFreeTypeTools()

vtkFontConfigFreeTypeTools::vtkFontConfigFreeTypeTools ( )

protected

◆ ~vtkFontConfigFreeTypeTools()

vtkFontConfigFreeTypeTools::~vtkFontConfigFreeTypeTools ( )

overrideprotected

Member Function Documentation

◆ IsTypeOf()

static vtkTypeBool vtkFontConfigFreeTypeTools::IsTypeOf ( const char * type )

static

◆ IsA()

virtual vtkTypeBool vtkFontConfigFreeTypeTools::IsA ( const char * name )

virtual

Return 1 if this class is the same type of (or a subclass of) the named class.

Returns 0 otherwise. This method works in combination with vtkTypeMacro found in vtkSetGet.h.

Reimplemented from vtkFreeTypeTools.

◆ SafeDownCast()

static vtkFontConfigFreeTypeTools* vtkFontConfigFreeTypeTools::SafeDownCast ( vtkObjectBase * o )

static

◆ NewInstanceInternal()

virtual vtkObjectBase* vtkFontConfigFreeTypeTools::NewInstanceInternal ( ) const

protectedvirtual

Reimplemented from vtkFreeTypeTools.

◆ NewInstance()

vtkFontConfigFreeTypeTools* vtkFontConfigFreeTypeTools::NewInstance ( ) const

◆ PrintSelf()

void vtkFontConfigFreeTypeTools::PrintSelf	(	ostream &	os,
		vtkIndent	indent
	)

overridevirtual

Methods invoked by print to print information about the object including superclasses.

Typically not called by the user (use Print() instead) but used in the hierarchical print process to combine the output of several classes.

Reimplemented from vtkFreeTypeTools.

◆ New()

static vtkFontConfigFreeTypeTools* vtkFontConfigFreeTypeTools::New ( )

static

Creates a new object of this type, but it is not preferred to use this method directly.

Instead, call vtkFreeTypeTools::GetInstance() and let the object factory create a new instance. In this way the singleton pattern of vtkFreeTypeTools is preserved.

◆ LookupFaceFontConfig()

static bool vtkFontConfigFreeTypeTools::LookupFaceFontConfig	(	vtkTextProperty *	tprop,
		FT_Library	lib,
		FT_Face *	face
	)

static

Modified version of vtkFreeTypeTools::LookupFace that locates FontConfig faces.

Falls back to the Superclass method for compiled fonts if the FontConfig lookup fails.

◆ CreateFTCManager()

FT_Error vtkFontConfigFreeTypeTools::CreateFTCManager ( )

overrideprotectedvirtual

Reimplemented from Superclass to use the FontConfig face lookup callback.

Reimplemented from vtkFreeTypeTools.

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

Rendering/FreeTypeFontConfig/vtkFontConfigFreeTypeTools.h

Public Types

Public Member Functions

Static Public Member Functions

Protected Member Functions

Additional Inherited Members

Detailed Description

Member Typedef Documentation

◆ Superclass

Constructor & Destructor Documentation

◆ vtkFontConfigFreeTypeTools()

◆ ~vtkFontConfigFreeTypeTools()

Member Function Documentation

◆ IsTypeOf()

◆ IsA()

◆ SafeDownCast()

◆ NewInstanceInternal()

◆ NewInstance()

◆ PrintSelf()

◆ New()

◆ LookupFaceFontConfig()

◆ CreateFTCManager()