BAL::BIGraphicsDevice Class Reference

#include <BIGraphicsDevice.h>

Inheritance diagram for BAL::BIGraphicsDevice:

List of all members.

Public Member Functions
virtual void	initialize (uint16_t width, uint16_t height, uint8_t depth)=0
	Initialize an allocate the buffer.
virtual void	finalize ()=0
	deallocate all surfaces allocated through intialize() method.
virtual BINativeImage *	createNativeImage (const WebCore::IntSize size)=0
	Create an empty buffer called NativeImage which can be blitted into primary buffer.
virtual BINativeImage *	createNativeImage (RGBA32Array &, const WebCore::IntSize size)=0
	Create a buffer filled with data from an RGBA32Array.
virtual void	copy (const BTWidget &, const BINativeImage &, WebCore::IntRect zone, WebCore::IntPoint, const uint8_t alphaChannel=255)=0
	Copy a NativeImage (buffer) into a widget buffer.
virtual void	drawArc (const BTWidget &, const WebCore::IntRect, uint16_t startAngle, uint16_t angleSpan, const WebCore::Color)=0
	draw an arc into widget buffer.
virtual void	drawEllipse (const BTWidget &, WebCore::IntRect, const WebCore::Color)=0
	draw an ellipse into widget buffer.
virtual void	drawLine (const BTWidget &, WebCore::IntPoint, WebCore::IntPoint, const WebCore::Color)=0
	draw an line into widget buffer.
virtual void	drawRect (const BTWidget &, WebCore::IntRect, const WebCore::Color)=0
	draw an empty rectangle into widget buffer.
virtual void	fillConvexPolygon (const BTWidget &, size_t numPoints, const WebCore::IntPoint *, const WebCore::Color)=0
	Draw a filled convex polygon into widget buffer.
virtual void	fillRect (const BTWidget &, WebCore::IntRect, const WebCore::Color)=0
	Draw a filled rectangle into widget buffer.
virtual void	setClip (const BTWidget &, WebCore::IntRect)=0
	Set a clipping zone for the widget buffer.
virtual WebCore::IntRect	clip (const BTWidget &)=0
	Get the clipping zone for the widget buffer.
virtual void	stretchBlit (const BTWidget &, const BINativeImage &, WebCore::IntRect src, WebCore::IntRect dst, const uint8_t alphaChannel=255)=0
	Stretch a buffer and blit it into the widget buffer.
virtual WebCore::IntSize	size () const =0
	Get the size of the Graphics device.
virtual void	update (const BTWidget &, const WebCore::IntRect)=0
	Update zone in the widget buffer.
virtual void	clear (const BTWidget &, const WebCore::IntRect)=0
	Clear a zone in the widget buffer FIXME should redraw with background color.
virtual	~BIGraphicsDevice ()
	Destructor for the Graphics device.

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Constructor & Destructor Documentation

virtual BAL::BIGraphicsDevice::~BIGraphicsDevice

(

)

[inline, virtual]

Destructor for the Graphics device.

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Member Function Documentation

virtual void BAL::BIGraphicsDevice::initialize	(	uint16_t	width,
		uint16_t	height,
		uint8_t	depth
	)			[pure virtual]

Initialize an allocate the buffer.

Use the implementation header if the buffer is own by another object and simply passed in argument.

Parameters:

[in]	width,:	width of the buffer to allocate
[in]	height,:	height of the buffer to allocate
[in]	depth,:	depth of the buffer to allocate

Implemented in BAL::BCGraphicsDeviceSDL.

virtual void BAL::BIGraphicsDevice::finalize

(

)

[pure virtual]

deallocate all surfaces allocated through intialize() method.

Implemented in BAL::BCGraphicsDeviceSDL.

virtual BINativeImage* BAL::BIGraphicsDevice::createNativeImage

(

const WebCore::IntSize

size

)

[pure virtual]

Create an empty buffer called NativeImage which can be blitted into primary buffer.

Parameters:

[in]

IntSize,:

size of the buffer to allocate

Implemented in BAL::BCGraphicsDeviceSDL.

virtual BINativeImage* BAL::BIGraphicsDevice::createNativeImage	(	RGBA32Array &	,
		const WebCore::IntSize	size
	)			[pure virtual]

Create a buffer filled with data from an RGBA32Array.

This method is typically used to allocate buffer for decoded images or fonts.

Parameters:

[in]	RGBA32Array&,:	the data to fill the buffer with
[in]	IntSize,:	size of the buffer to allocate (must be size of the RGBA32Array)

Implemented in BAL::BCGraphicsDeviceSDL.

virtual void BAL::BIGraphicsDevice::copy	(	const BTWidget &	,
		const BINativeImage &	,
		WebCore::IntRect	zone,
		WebCore::IntPoint	,
		const uint8_t	alphaChannel = 255
	)			[pure virtual]

Copy a NativeImage (buffer) into a widget buffer.

Parameters:

[in]	BTWidget
[in]	BINativeImage,:	the buffer to copy
[in]	IntRect,:	where to copy buffer
[in]	IntPoint
[in]	alphaChannel,:	global alpha to apply to the copied buffer

Implemented in BAL::BCGraphicsDeviceSDL.

virtual void BAL::BIGraphicsDevice::drawArc	(	const BTWidget &	,
		const WebCore::IntRect	,
		uint16_t	startAngle,
		uint16_t	angleSpan,
		const WebCore::Color
	)			[pure virtual]

draw an arc into widget buffer.

Parameters:

[in]	BTWidget,:	use widget buffer to draw
[in]	IntRect,:	rectangle which contains arc
[in]	startAngle
[in]	angleSpan,:	endAngle = startAngle + angleSpan
[in]	Color,:	color of the arc to draw

virtual void BAL::BIGraphicsDevice::drawEllipse	(	const BTWidget &	,
		WebCore::IntRect	,
		const WebCore::Color
	)			[pure virtual]

draw an ellipse into widget buffer.

Parameters:

[in]	BTWidget,:	use widget buffer to draw
[in]	IntRect,:	rectangle which contains ellipse. Ellipse specific params can be computed from this rectangle.
[in]	Color,:	color of the ellipse to draw

Implemented in BAL::BCGraphicsDeviceSDL.

virtual void BAL::BIGraphicsDevice::drawLine	(	const BTWidget &	,
		WebCore::IntPoint	,
		WebCore::IntPoint	,
		const WebCore::Color
	)			[pure virtual]

draw an line into widget buffer.

Parameters:

[in]	BTWidget,:	use widget buffer to draw
[in]	IntPoint,:	starting point
[in]	IntPoint,:	end point
[in]	Color,:	color of the line to draw

Implemented in BAL::BCGraphicsDeviceSDL.

virtual void BAL::BIGraphicsDevice::drawRect	(	const BTWidget &	,
		WebCore::IntRect	,
		const WebCore::Color
	)			[pure virtual]

draw an empty rectangle into widget buffer.

Parameters:

[in]	BTWidget,:	use widget buffer to draw
[in]	IntRect,:	rectangle to draw
[in]	Color,:	color of the line to draw

Implemented in BAL::BCGraphicsDeviceSDL.

virtual void BAL::BIGraphicsDevice::fillConvexPolygon	(	const BTWidget &	,
		size_t	numPoints,
		const WebCore::IntPoint *	,
		const WebCore::Color
	)			[pure virtual]

Draw a filled convex polygon into widget buffer.

I mean from a triangle to whatever. Of course to draw square or rectangle, use a method like drawRect().

Parameters:

[in]	BTWidget,:	use widget buffer to draw
[in]	size_t,:	number of points of the polygon
[in]	IntPoint*,:	list of numPoint size which contains each point coordinate
[in]	Color,:	color of the polygon to draw

Implemented in BAL::BCGraphicsDeviceSDL.

virtual void BAL::BIGraphicsDevice::fillRect	(	const BTWidget &	,
		WebCore::IntRect	,
		const WebCore::Color
	)			[pure virtual]

Draw a filled rectangle into widget buffer.

Parameters:

[in]	BTWidget,:	use widget buffer to draw
[in]	IntRect,:	rectangle to draw
[in]	Color,:	color of the polygon to draw

Implemented in BAL::BCGraphicsDeviceSDL.

virtual void BAL::BIGraphicsDevice::setClip	(	const BTWidget &	,
		WebCore::IntRect
	)			[pure virtual]

Set a clipping zone for the widget buffer.

Parameters:

[in]	BTWidget,:	use widget buffer
[in]	IntRect,:	clipping zone to set

Implemented in BAL::BCGraphicsDeviceSDL.

virtual WebCore::IntRect BAL::BIGraphicsDevice::clip

(

const BTWidget &

)

[pure virtual]

Get the clipping zone for the widget buffer.

Parameters:

[in]

BTWidget,:

use widget buffer

Returns:

IntRect: the clipping zone for the widget

Implemented in BAL::BCGraphicsDeviceSDL.

virtual void BAL::BIGraphicsDevice::stretchBlit	(	const BTWidget &	,
		const BINativeImage &	,
		WebCore::IntRect	src,
		WebCore::IntRect	dst,
		const uint8_t	alphaChannel = 255
	)			[pure virtual]

Stretch a buffer and blit it into the widget buffer.

If you do not need to stretch the buffer before blitting, use copy() method.

Parameters:

[in]	BTWidget,:	use widget buffer
[in]	BINativeImage&,:	the buffer to stretch and blit
[in]	IntRect,:	size and coordinate of the buffer to blit
[in]	IntRect,:	size and coordinate of the destination blit
[in]	alphaChannel,:	global alpha to apply to the copied buffer

Implemented in BAL::BCGraphicsDeviceSDL.

virtual WebCore::IntSize BAL::BIGraphicsDevice::size

(

)

const [pure virtual]

Get the size of the Graphics device.

Returns:

IntSize: size

Implemented in BAL::BCGraphicsDeviceSDL.

virtual void BAL::BIGraphicsDevice::update	(	const BTWidget &	,
		const WebCore::IntRect
	)			[pure virtual]

Update zone in the widget buffer.

Parameters:

[in]	BTWidget,:	use widget buffer
[in]	IntRect,:	zone to update

Implemented in BAL::BCGraphicsDeviceSDL.

virtual void BAL::BIGraphicsDevice::clear	(	const BTWidget &	,
		const WebCore::IntRect
	)			[pure virtual]

Clear a zone in the widget buffer FIXME should redraw with background color.

Parameters:

[in]	BTWidget,:	use widget buffer
[in]	IntRect,:	the rectangular zone to clear

Implemented in BAL::BCGraphicsDeviceSDL.

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

• /src/trunk2/BAL/Interfaces/graphics/BIGraphicsDevice.h

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