DtTTSDrawer Class Reference

class DtTTSDrawer: More...

Inheritance diagram for DtTTSDrawer:

List of all members.

Public Member Functions
	DtTTSDrawer ()
	DtTTSDrawer (const QString &family, int pointSize=24)
virtual	~DtTTSDrawer ()
virtual bool	draw (QPainter &paint, const DtSymbol *const symbol) const
virtual QSize	calcBBox (const DtSymbol *const symbol) const
	Calculate the drawn size of this symbol.
virtual void	setFont (const QString &family, unsigned pointSize)
virtual void	setFont (const QFont &font)
const QFont &	font () const
virtual bool	compareFamily (const QString &desiredFamily, const QFont &font) const
	Compare the desired family to the one actually loaded.
virtual QPoint	calcOrigin (const DtTTSSymbol *s, bool calcBitmapOrigin=false) const
	Calculates the upper left corner of the text and sets the appearance font for drawing, so, if you call this routine, you do not need to call setAppearance.
virtual void	paintFont (QPainter &painter, int left, int base, const DtTTSSymbol &symbol, const QColor &) const
	Paint the font symbol on the device, so that its left, bottom corner is at the specified location.
virtual void	paintFont (QPainter &painter, QRect &rect, const DtTTSSymbol &t, const QColor &, int flags=0) const
virtual void	setCenter (bool b)
	Sets whether or not to center the text. By default left jusitfies.
Static Public Member Functions
static DtSymbolDrawer *	create ()
Protected Member Functions
virtual void	setAppearance (const DtTTSSymbol &s) const
	Use symbol to set attributes.
virtual bool	drawSymbolAsBitmap (QPainter &painter, const QPoint &origin, const DtTTSSymbol &t) const
virtual bool	drawFont (QPainter &painter, const QPoint &origin, const DtTTSSymbol &t) const
virtual QString	calcKey (const DtTTSSymbol &symbol) const
virtual void	createFontKey ()
virtual QHash< QString, QPixmap >::const_iterator	insertPix (const DtTTSSymbol &symbol, const QPixmap *pix) const
	Cache management functions.
virtual const QPixmap *	lookupPix (const DtTTSSymbol &symbol) const
	Cache management functions.
virtual const QPixmap *	createPix (const DtTTSSymbol *pSymbol) const
	Cache management functions.
Protected Attributes
QFont	myFont
	Mutable since we are just saving this information for performance reasons.
QFont	myDefaultFont
QFontMetrics	myFontMetrics
bool	myCenter
QHash< QString, QPixmap >	myCache
	mutable since we are just saving this information for performance reasons.
QString	myFontKey
Private Member Functions
	DtTTSDrawer (const DtTTSDrawer &orig)
DtTTSDrawer &	operator= (const DtTTSDrawer &orig)

---

Detailed Description

class DtTTSDrawer:

Concrete class which draws scaled strings using a true type font. Subclassed from BMP Drawer to support caching of font drawing to bitmaps (QPixmap). This is a faster way to draw under windows than font drawing (as of Qt 4.4.1)

---

Constructor & Destructor Documentation

DtTTSDrawer::DtTTSDrawer

(

)

DtTTSDrawer::DtTTSDrawer	(	const QString &	family,
		int	pointSize = 24
	)

virtual DtTTSDrawer::~DtTTSDrawer

(

)

[virtual]

DtTTSDrawer::DtTTSDrawer

(

const DtTTSDrawer &

orig

)

[private]

---

Member Function Documentation

virtual bool DtTTSDrawer::draw	(	QPainter &	paint,
		const DtSymbol *const	symbol
	)		const [virtual]

Implements DtSymbolDrawer.

virtual QSize DtTTSDrawer::calcBBox

(

const DtSymbol *const

symbol

)

const [virtual]

Calculate the drawn size of this symbol.

The symbol must be of a type this drawer can recognize.

Implements DtSymbolDrawer.

Reimplemented in DtTTFUnitSymbolDrawer.

virtual void DtTTSDrawer::setFont	(	const QString &	family,
		unsigned	pointSize
	)		[virtual]

virtual void DtTTSDrawer::setFont

(

const QFont &

font

)

[virtual]

const QFont& DtTTSDrawer::font

(

)

const

virtual bool DtTTSDrawer::compareFamily	(	const QString &	desiredFamily,
		const QFont &	font
	)		const [virtual]

Compare the desired family to the one actually loaded.

virtual QPoint DtTTSDrawer::calcOrigin	(	const DtTTSSymbol *	s,
		bool	calcBitmapOrigin = false
	)		const [virtual]

Calculates the upper left corner of the text and sets the appearance font for drawing, so, if you call this routine, you do not need to call setAppearance.

Reimplemented in DtMMMDrawer, and DtTTFUnitSymbolDrawer.

virtual void DtTTSDrawer::paintFont	(	QPainter &	painter,
		int	left,
		int	base,
		const DtTTSSymbol &	symbol,
		const QColor &
	)		const [virtual]

Paint the font symbol on the device, so that its left, bottom corner is at the specified location.

virtual void DtTTSDrawer::paintFont	(	QPainter &	painter,
		QRect &	rect,
		const DtTTSSymbol &	t,
		const QColor &	,
		int	flags = 0
	)		const [virtual]

virtual void DtTTSDrawer::setCenter

(

bool

b

)

[virtual]

Sets whether or not to center the text. By default left jusitfies.

static DtSymbolDrawer* DtTTSDrawer::create

(

)

[static]

Reimplemented in DtTTFUnitSymbolDrawer, and DtMMMDrawer.

virtual void DtTTSDrawer::setAppearance

(

const DtTTSSymbol &

s

)

const [protected, virtual]

Use symbol to set attributes.

virtual bool DtTTSDrawer::drawSymbolAsBitmap	(	QPainter &	painter,
		const QPoint &	origin,
		const DtTTSSymbol &	t
	)		const [protected, virtual]

Reimplemented in DtMMMDrawer.

virtual bool DtTTSDrawer::drawFont	(	QPainter &	painter,
		const QPoint &	origin,
		const DtTTSSymbol &	t
	)		const [protected, virtual]

Reimplemented in DtMMMDrawer.

virtual QString DtTTSDrawer::calcKey

(

const DtTTSSymbol &

symbol

)

const [protected, virtual]

virtual QHash<QString, QPixmap>::const_iterator DtTTSDrawer::insertPix	(	const DtTTSSymbol &	symbol,
		const QPixmap *	pix
	)		const [protected, virtual]

Cache management functions.

virtual const QPixmap* DtTTSDrawer::lookupPix

(

const DtTTSSymbol &

symbol

)

const [protected, virtual]

Cache management functions.

virtual const QPixmap* DtTTSDrawer::createPix

(

const DtTTSSymbol *

pSymbol

)

const [protected, virtual]

Cache management functions.

Reimplemented in DtMMMDrawer.

virtual void DtTTSDrawer::createFontKey

(

)

[protected, virtual]

DtTTSDrawer& DtTTSDrawer::operator=

(

const DtTTSDrawer &

orig

)

[private]

---

Member Data Documentation

QFont DtTTSDrawer::myFont [mutable, protected]

Mutable since we are just saving this information for performance reasons.

We reset it for every symbol.

QFont DtTTSDrawer::myDefaultFont [mutable, protected]

QFontMetrics DtTTSDrawer::myFontMetrics [mutable, protected]

bool DtTTSDrawer::myCenter [protected]

QHash<QString, QPixmap> DtTTSDrawer::myCache [mutable, protected]

mutable since we are just saving this information for performance reasons.

QString DtTTSDrawer::myFontKey [protected]

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

• include/symbolDrawer/ttsDrawer.h