LowLevelGraphicsContext Class Reference

Interface class for graphics context objects, used internally by the Graphics class. More...

Inherited by LowLevelGraphicsPostScriptRenderer, and LowLevelGraphicsSoftwareRenderer.

List of all members.

Public Member Functions
virtual	~LowLevelGraphicsContext ()
virtual bool	isVectorDevice () const =0
	Returns true if this device is vector-based, e.g.
virtual void	setOrigin (int x, int y)=0
	Moves the origin to a new position.
virtual void	addTransform (const AffineTransform &transform)=0
virtual float	getScaleFactor ()=0
virtual bool	clipToRectangle (const Rectangle< int > &r)=0
virtual bool	clipToRectangleList (const RectangleList &clipRegion)=0
virtual void	excludeClipRectangle (const Rectangle< int > &r)=0
virtual void	clipToPath (const Path &path, const AffineTransform &transform)=0
virtual void	clipToImageAlpha (const Image &sourceImage, const AffineTransform &transform)=0
virtual bool	clipRegionIntersects (const Rectangle< int > &r)=0
virtual const Rectangle< int >	getClipBounds () const =0
virtual bool	isClipEmpty () const =0
virtual void	saveState ()=0
virtual void	restoreState ()=0
virtual void	beginTransparencyLayer (float opacity)=0
virtual void	endTransparencyLayer ()=0
virtual void	setFill (const FillType &fillType)=0
virtual void	setOpacity (float newOpacity)=0
virtual void	setInterpolationQuality (Graphics::ResamplingQuality quality)=0
virtual void	fillRect (const Rectangle< int > &r, bool replaceExistingContents)=0
virtual void	fillPath (const Path &path, const AffineTransform &transform)=0
virtual void	drawImage (const Image &sourceImage, const AffineTransform &transform, bool fillEntireClipAsTiles)=0
virtual void	drawLine (const Line< float > &line)=0
virtual void	drawVerticalLine (int x, float top, float bottom)=0
virtual void	drawHorizontalLine (int y, float left, float right)=0
virtual void	setFont (const Font &newFont)=0
virtual Font	getFont ()=0
virtual void	drawGlyph (int glyphNumber, const AffineTransform &transform)=0
Protected Member Functions
	LowLevelGraphicsContext ()

---

Detailed Description

Interface class for graphics context objects, used internally by the Graphics class.

Users are not supposed to create instances of this class directly - do your drawing via the Graphics object instead.

It's a base class for different types of graphics context, that may perform software-based or OS-accelerated rendering.

E.g. the LowLevelGraphicsSoftwareRenderer renders onto an image in memory, but other subclasses could render directly to a windows HDC, a Quartz context, or an OpenGL context.

---

Constructor & Destructor Documentation

LowLevelGraphicsContext::LowLevelGraphicsContext

(

)

[protected]

virtual LowLevelGraphicsContext::~LowLevelGraphicsContext

(

)

[virtual]

---

Member Function Documentation

virtual bool LowLevelGraphicsContext::isVectorDevice

(

)

const [pure virtual]

Returns true if this device is vector-based, e.g.

a printer.

Implemented in LowLevelGraphicsPostScriptRenderer, and LowLevelGraphicsSoftwareRenderer.

virtual void LowLevelGraphicsContext::setOrigin	(	int	x,
		int	y
	)		[pure virtual]

Moves the origin to a new position.

The co-ords are relative to the current origin, and indicate the new position of (0, 0).

Implemented in LowLevelGraphicsPostScriptRenderer, and LowLevelGraphicsSoftwareRenderer.

virtual void LowLevelGraphicsContext::addTransform

(

const AffineTransform &

transform )

[pure virtual]

Implemented in LowLevelGraphicsPostScriptRenderer, and LowLevelGraphicsSoftwareRenderer.

virtual float LowLevelGraphicsContext::getScaleFactor

(

)

[pure virtual]

Implemented in LowLevelGraphicsPostScriptRenderer, and LowLevelGraphicsSoftwareRenderer.

virtual bool LowLevelGraphicsContext::clipToRectangle

(

const Rectangle< int > &

r )

[pure virtual]

Implemented in LowLevelGraphicsPostScriptRenderer, and LowLevelGraphicsSoftwareRenderer.

virtual bool LowLevelGraphicsContext::clipToRectangleList

(

const RectangleList &

clipRegion )

[pure virtual]

Implemented in LowLevelGraphicsPostScriptRenderer, and LowLevelGraphicsSoftwareRenderer.

virtual void LowLevelGraphicsContext::excludeClipRectangle

(

const Rectangle< int > &

r )

[pure virtual]

Implemented in LowLevelGraphicsPostScriptRenderer, and LowLevelGraphicsSoftwareRenderer.

virtual void LowLevelGraphicsContext::clipToPath	(	const Path &	path,
		const AffineTransform &	transform
	)		[pure virtual]

Implemented in LowLevelGraphicsPostScriptRenderer, and LowLevelGraphicsSoftwareRenderer.

virtual void LowLevelGraphicsContext::clipToImageAlpha	(	const Image &	sourceImage,
		const AffineTransform &	transform
	)		[pure virtual]

Implemented in LowLevelGraphicsPostScriptRenderer, and LowLevelGraphicsSoftwareRenderer.

virtual bool LowLevelGraphicsContext::clipRegionIntersects

(

const Rectangle< int > &

r )

[pure virtual]

Implemented in LowLevelGraphicsPostScriptRenderer, and LowLevelGraphicsSoftwareRenderer.

virtual const Rectangle<int> LowLevelGraphicsContext::getClipBounds

(

)

const [pure virtual]

Implemented in LowLevelGraphicsPostScriptRenderer, and LowLevelGraphicsSoftwareRenderer.

virtual bool LowLevelGraphicsContext::isClipEmpty

(

)

const [pure virtual]

Implemented in LowLevelGraphicsPostScriptRenderer, and LowLevelGraphicsSoftwareRenderer.

virtual void LowLevelGraphicsContext::saveState

(

)

[pure virtual]

Implemented in LowLevelGraphicsPostScriptRenderer, and LowLevelGraphicsSoftwareRenderer.

virtual void LowLevelGraphicsContext::restoreState

(

)

[pure virtual]

Implemented in LowLevelGraphicsPostScriptRenderer, and LowLevelGraphicsSoftwareRenderer.

virtual void LowLevelGraphicsContext::beginTransparencyLayer

(

float

opacity )

[pure virtual]

Implemented in LowLevelGraphicsPostScriptRenderer, and LowLevelGraphicsSoftwareRenderer.

virtual void LowLevelGraphicsContext::endTransparencyLayer

(

)

[pure virtual]

Implemented in LowLevelGraphicsPostScriptRenderer, and LowLevelGraphicsSoftwareRenderer.

virtual void LowLevelGraphicsContext::setFill

(

const FillType &

fillType )

[pure virtual]

Implemented in LowLevelGraphicsPostScriptRenderer, and LowLevelGraphicsSoftwareRenderer.

virtual void LowLevelGraphicsContext::setOpacity

(

float

newOpacity )

[pure virtual]

Implemented in LowLevelGraphicsPostScriptRenderer, and LowLevelGraphicsSoftwareRenderer.

virtual void LowLevelGraphicsContext::setInterpolationQuality

(

Graphics::ResamplingQuality

quality )

[pure virtual]

Implemented in LowLevelGraphicsPostScriptRenderer, and LowLevelGraphicsSoftwareRenderer.

virtual void LowLevelGraphicsContext::fillRect	(	const Rectangle< int > &	r,
		bool	replaceExistingContents
	)		[pure virtual]

Implemented in LowLevelGraphicsPostScriptRenderer, and LowLevelGraphicsSoftwareRenderer.

virtual void LowLevelGraphicsContext::fillPath	(	const Path &	path,
		const AffineTransform &	transform
	)		[pure virtual]

Implemented in LowLevelGraphicsPostScriptRenderer, and LowLevelGraphicsSoftwareRenderer.

virtual void LowLevelGraphicsContext::drawImage	(	const Image &	sourceImage,
		const AffineTransform &	transform,
		bool	fillEntireClipAsTiles
	)		[pure virtual]

Implemented in LowLevelGraphicsPostScriptRenderer, and LowLevelGraphicsSoftwareRenderer.

virtual void LowLevelGraphicsContext::drawLine

(

const Line< float > &

line )

[pure virtual]

Implemented in LowLevelGraphicsPostScriptRenderer, and LowLevelGraphicsSoftwareRenderer.

virtual void LowLevelGraphicsContext::drawVerticalLine	(	int	x,
		float	top,
		float	bottom
	)		[pure virtual]

Implemented in LowLevelGraphicsPostScriptRenderer, and LowLevelGraphicsSoftwareRenderer.

virtual void LowLevelGraphicsContext::drawHorizontalLine	(	int	y,
		float	left,
		float	right
	)		[pure virtual]

Implemented in LowLevelGraphicsPostScriptRenderer, and LowLevelGraphicsSoftwareRenderer.

virtual void LowLevelGraphicsContext::setFont

(

const Font &

newFont )

[pure virtual]

Implemented in LowLevelGraphicsPostScriptRenderer, and LowLevelGraphicsSoftwareRenderer.

virtual Font LowLevelGraphicsContext::getFont

(

)

[pure virtual]

Implemented in LowLevelGraphicsPostScriptRenderer, and LowLevelGraphicsSoftwareRenderer.

virtual void LowLevelGraphicsContext::drawGlyph	(	int	glyphNumber,
		const AffineTransform &	transform
	)		[pure virtual]

Implemented in LowLevelGraphicsPostScriptRenderer, and LowLevelGraphicsSoftwareRenderer.

---

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

• juce_LowLevelGraphicsContext.h