CanvasRenderingContext2D Interface Reference

import"CanvasRenderingContext2D.idl";

Public Member Functions
void	save ()
void	restore ()
void	commit ()
void	scale (unrestricted float sx, unrestricted float sy)
void	rotate (unrestricted float angle)
void	translate (unrestricted float tx, unrestricted float ty)
void	transform (unrestricted float m11, unrestricted float m12, unrestricted float m21, unrestricted float m22, unrestricted float dx, unrestricted float dy)
void	setTransform (unrestricted float m11, unrestricted float m12, unrestricted float m21, unrestricted float m22, unrestricted float dx, unrestricted float dy)
void	resetTransform ()
void	setLineDash (sequence< unrestricted float > dash)
sequence< unrestricted float >	getLineDash ()
void	clearRect (unrestricted float x, unrestricted float y, unrestricted float width, unrestricted float height)
void	fillRect (unrestricted float x, unrestricted float y, unrestricted float width, unrestricted float height)
void	beginPath ()
void	fill (DOMPath path, optional CanvasWindingRule winding="nonzero")
void	stroke (DOMPath path)
void	clip (DOMPath path, optional CanvasWindingRule winding="nonzero")
void	fill (optional CanvasWindingRule winding="nonzero")
void	stroke ()
void	clip (optional CanvasWindingRule winding="nonzero")
boolean	isPointInPath (DOMPath path, unrestricted float x, unrestricted float y, optional CanvasWindingRule winding="nonzero")
boolean	isPointInStroke (DOMPath path, unrestricted float x, unrestricted float y)
boolean	isPointInPath (unrestricted float x, unrestricted float y, optional CanvasWindingRule winding="nonzero")
boolean	isPointInStroke (unrestricted float x, unrestricted float y)
TextMetrics	measureText (DOMString text)
void	setAlpha (optional unrestricted float alpha=NaN)
void	setCompositeOperation (optional DOMString compositeOperation="undefined")
void	setLineWidth (optional unrestricted float width=NaN)
void	setLineCap (optional DOMString cap="undefined")
void	setLineJoin (optional DOMString join="undefined")
void	setMiterLimit (optional unrestricted float limit=NaN)
void	clearShadow ()
void	fillText (DOMString text, unrestricted float x, unrestricted float y, optional unrestricted float maxWidth)
void	strokeText (DOMString text, unrestricted float x, unrestricted float y, optional unrestricted float maxWidth)
void	setStrokeColor (DOMString color, optional unrestricted float alpha)
void	setStrokeColor (unrestricted float grayLevel, optional float alpha=1)
void	setStrokeColor (unrestricted float r, unrestricted float g, unrestricted float b, unrestricted float a)
void	setStrokeColor (unrestricted float c, unrestricted float m, unrestricted float y, unrestricted float k, unrestricted float a)
void	setFillColor (DOMString color, optional unrestricted float alpha)
void	setFillColor (unrestricted float grayLevel, optional unrestricted float alpha=1)
void	setFillColor (unrestricted float r, unrestricted float g, unrestricted float b, unrestricted float a)
void	setFillColor (unrestricted float c, unrestricted float m, unrestricted float y, unrestricted float k, unrestricted float a)
void	strokeRect (unrestricted float x, unrestricted float y, unrestricted float width, unrestricted float height)
void	drawImage (CanvasImageSource image, unrestricted float x, unrestricted float y)
void	drawImage (CanvasImageSource image, unrestricted float x, unrestricted float y, unrestricted float width, unrestricted float height)
void	drawImage (CanvasImageSource image, unrestricted float sx, unrestricted float sy, unrestricted float sw, unrestricted float sh, unrestricted float dx, unrestricted float dy, unrestricted float dw, unrestricted float dh)
void	drawImageFromRect (HTMLImageElement image, optional unrestricted float sx=0, optional unrestricted float sy=0, optional unrestricted float sw=0, optional unrestricted float sh=0, optional unrestricted float dx=0, optional unrestricted float dy=0, optional unrestricted float dw=0, optional unrestricted float dh=0, optional DOMString compositeOperation="")
void	setShadow (unrestricted float width, unrestricted float height, unrestricted float blur, optional DOMString color, optional unrestricted float alpha)
void	setShadow (unrestricted float width, unrestricted float height, unrestricted float blur, unrestricted float grayLevel, optional unrestricted float alpha=1)
void	setShadow (unrestricted float width, unrestricted float height, unrestricted float blur, unrestricted float r, unrestricted float g, unrestricted float b, unrestricted float a)
void	setShadow (float width, unrestricted float height, unrestricted float blur, unrestricted float c, unrestricted float m, unrestricted float y, unrestricted float k, unrestricted float a)
void	putImageData (ImageData imagedata, float dx, float dy)
void	putImageData (ImageData imagedata, float dx, float dy, float dirtyX, float dirtyY, float dirtyWidth, float dirtyHeight)
void	webkitPutImageDataHD (ImageData imagedata, float dx, float dy)
void	webkitPutImageDataHD (ImageData imagedata, float dx, float dy, float dirtyX, float dirtyY, float dirtyWidth, float dirtyHeight)
ImageData	createImageData (ImageData? imagedata)
ImageData	createImageData (float sw, float sh)
	attribute (DOMString or CanvasGradient or CanvasPattern) strokeStyle
	attribute (DOMString or CanvasGradient or CanvasPattern) fillStyle
CanvasGradient	createLinearGradient (float x0, float y0, float x1, float y1)
CanvasGradient	createRadialGradient (float x0, float y0, float r0, float x1, float y1, float r1)
CanvasPattern	createPattern (CanvasImageSource image, [TreatNullAs=EmptyString] DOMString repetition)
ImageData	getImageData (float sx, float sy, float sw, float sh)
ImageData	webkitGetImageDataHD (float sx, float sy, float sw, float sh)
void	drawFocusIfNeeded (Element element)
void	drawFocusIfNeeded (DOMPath path, Element element)

Public Attributes
readonly attribute HTMLCanvasElement	canvas
attribute unrestricted float	globalAlpha
attribute DOMString	globalCompositeOperation
attribute unrestricted float	lineWidth
attribute DOMString	lineCap
attribute DOMString	lineJoin
attribute unrestricted float	miterLimit
attribute unrestricted float	shadowOffsetX
attribute unrestricted float	shadowOffsetY
attribute unrestricted float	shadowBlur
attribute DOMString	shadowColor
attribute unrestricted float	lineDashOffset
attribute sequence< unrestricted float >	webkitLineDash
attribute unrestricted float	webkitLineDashOffset
attribute DOMString	font
attribute DOMString	textAlign
attribute DOMString	textBaseline
attribute DOMString	direction
readonly attribute float	webkitBackingStorePixelRatio
attribute boolean	imageSmoothingEnabled
attribute boolean	webkitImageSmoothingEnabled
attribute ImageSmoothingQuality	imageSmoothingQuality

Member Function Documentation

attribute() [1/2]

CanvasRenderingContext2D::attribute

(

DOMString or CanvasGradient or

CanvasPattern

)

attribute() [2/2]

CanvasRenderingContext2D::attribute

(

DOMString or CanvasGradient or

CanvasPattern

)

beginPath()

void CanvasRenderingContext2D::beginPath

(

)

clearRect()

void CanvasRenderingContext2D::clearRect	(	unrestricted float	x,
		unrestricted float	y,
		unrestricted float	width,
		unrestricted float	height
	)

clearShadow()

void CanvasRenderingContext2D::clearShadow

(

)

clip() [1/2]

void CanvasRenderingContext2D::clip	(	DOMPath	path,
		optional CanvasWindingRule	winding = "nonzero"
	)

clip() [2/2]

void CanvasRenderingContext2D::clip

(

optional CanvasWindingRule

winding = "nonzero"

)

commit()

void CanvasRenderingContext2D::commit

(

)

createImageData() [1/2]

ImageData CanvasRenderingContext2D::createImageData

(

ImageData?

imagedata

)

createImageData() [2/2]

ImageData CanvasRenderingContext2D::createImageData	(	float	sw,
		float	sh
	)

createLinearGradient()

CanvasGradient CanvasRenderingContext2D::createLinearGradient	(	float	x0,
		float	y0,
		float	x1,
		float	y1
	)

createPattern()

CanvasPattern CanvasRenderingContext2D::createPattern	(	CanvasImageSource	image,
		[TreatNullAs=EmptyString] DOMString	repetition
	)

createRadialGradient()

CanvasGradient CanvasRenderingContext2D::createRadialGradient	(	float	x0,
		float	y0,
		float	r0,
		float	x1,
		float	y1,
		float	r1
	)

drawFocusIfNeeded() [1/2]

void CanvasRenderingContext2D::drawFocusIfNeeded

(

Element

element

)

drawFocusIfNeeded() [2/2]

void CanvasRenderingContext2D::drawFocusIfNeeded	(	DOMPath	path,
		Element	element
	)

drawImage() [1/3]

void CanvasRenderingContext2D::drawImage	(	CanvasImageSource	image,
		unrestricted float	x,
		unrestricted float	y
	)

drawImage() [2/3]

void CanvasRenderingContext2D::drawImage	(	CanvasImageSource	image,
		unrestricted float	x,
		unrestricted float	y,
		unrestricted float	width,
		unrestricted float	height
	)

drawImage() [3/3]

void CanvasRenderingContext2D::drawImage	(	CanvasImageSource	image,
		unrestricted float	sx,
		unrestricted float	sy,
		unrestricted float	sw,
		unrestricted float	sh,
		unrestricted float	dx,
		unrestricted float	dy,
		unrestricted float	dw,
		unrestricted float	dh
	)

drawImageFromRect()

void CanvasRenderingContext2D::drawImageFromRect	(	HTMLImageElement	image,
		optional unrestricted float	sx = 0,
		optional unrestricted float	sy = 0,
		optional unrestricted float	sw = 0,
		optional unrestricted float	sh = 0,
		optional unrestricted float	dx = 0,
		optional unrestricted float	dy = 0,
		optional unrestricted float	dw = 0,
		optional unrestricted float	dh = 0,
		optional DOMString	compositeOperation = ""
	)

fill() [1/2]

void CanvasRenderingContext2D::fill	(	DOMPath	path,
		optional CanvasWindingRule	winding = "nonzero"
	)

fill() [2/2]

void CanvasRenderingContext2D::fill

(

optional CanvasWindingRule

winding = "nonzero"

)

fillRect()

void CanvasRenderingContext2D::fillRect	(	unrestricted float	x,
		unrestricted float	y,
		unrestricted float	width,
		unrestricted float	height
	)

fillText()

void CanvasRenderingContext2D::fillText	(	DOMString	text,
		unrestricted float	x,
		unrestricted float	y,
		optional unrestricted float	maxWidth
	)

getImageData()

ImageData CanvasRenderingContext2D::getImageData	(	float	sx,
		float	sy,
		float	sw,
		float	sh
	)

getLineDash()

sequence<unrestricted float> CanvasRenderingContext2D::getLineDash

(

)

isPointInPath() [1/2]

boolean CanvasRenderingContext2D::isPointInPath	(	DOMPath	path,
		unrestricted float	x,
		unrestricted float	y,
		optional CanvasWindingRule	winding = "nonzero"
	)

isPointInPath() [2/2]

boolean CanvasRenderingContext2D::isPointInPath	(	unrestricted float	x,
		unrestricted float	y,
		optional CanvasWindingRule	winding = "nonzero"
	)

isPointInStroke() [1/2]

boolean CanvasRenderingContext2D::isPointInStroke	(	DOMPath	path,
		unrestricted float	x,
		unrestricted float	y
	)

isPointInStroke() [2/2]

boolean CanvasRenderingContext2D::isPointInStroke	(	unrestricted float	x,
		unrestricted float	y
	)

measureText()

TextMetrics CanvasRenderingContext2D::measureText

(

DOMString

text

)

putImageData() [1/2]

void CanvasRenderingContext2D::putImageData	(	ImageData	imagedata,
		float	dx,
		float	dy
	)

putImageData() [2/2]

void CanvasRenderingContext2D::putImageData	(	ImageData	imagedata,
		float	dx,
		float	dy,
		float	dirtyX,
		float	dirtyY,
		float	dirtyWidth,
		float	dirtyHeight
	)

resetTransform()

void CanvasRenderingContext2D::resetTransform

(

)

restore()

void CanvasRenderingContext2D::restore

(

)

rotate()

void CanvasRenderingContext2D::rotate

(

unrestricted float

angle

)

save()

void CanvasRenderingContext2D::save

(

)

scale()

void CanvasRenderingContext2D::scale	(	unrestricted float	sx,
		unrestricted float	sy
	)

setAlpha()

void CanvasRenderingContext2D::setAlpha

(

optional unrestricted float

alpha = NaN

)

setCompositeOperation()

void CanvasRenderingContext2D::setCompositeOperation

(

optional DOMString

compositeOperation = "undefined"

)

setFillColor() [1/4]

void CanvasRenderingContext2D::setFillColor	(	DOMString	color,
		optional unrestricted float	alpha
	)

setFillColor() [2/4]

void CanvasRenderingContext2D::setFillColor	(	unrestricted float	grayLevel,
		optional unrestricted float	alpha = 1
	)

setFillColor() [3/4]

void CanvasRenderingContext2D::setFillColor	(	unrestricted float	r,
		unrestricted float	g,
		unrestricted float	b,
		unrestricted float	a
	)

setFillColor() [4/4]

void CanvasRenderingContext2D::setFillColor	(	unrestricted float	c,
		unrestricted float	m,
		unrestricted float	y,
		unrestricted float	k,
		unrestricted float	a
	)

setLineCap()

void CanvasRenderingContext2D::setLineCap

(

optional DOMString

cap = "undefined"

)

setLineDash()

void CanvasRenderingContext2D::setLineDash

(

sequence< unrestricted float >

dash

)

setLineJoin()

void CanvasRenderingContext2D::setLineJoin

(

optional DOMString

join = "undefined"

)

setLineWidth()

void CanvasRenderingContext2D::setLineWidth

(

optional unrestricted float

width = NaN

)

setMiterLimit()

void CanvasRenderingContext2D::setMiterLimit

(

optional unrestricted float

limit = NaN

)

setShadow() [1/4]

void CanvasRenderingContext2D::setShadow	(	unrestricted float	width,
		unrestricted float	height,
		unrestricted float	blur,
		optional DOMString	color,
		optional unrestricted float	alpha
	)

setShadow() [2/4]

void CanvasRenderingContext2D::setShadow	(	unrestricted float	width,
		unrestricted float	height,
		unrestricted float	blur,
		unrestricted float	grayLevel,
		optional unrestricted float	alpha = 1
	)

setShadow() [3/4]

void CanvasRenderingContext2D::setShadow	(	unrestricted float	width,
		unrestricted float	height,
		unrestricted float	blur,
		unrestricted float	r,
		unrestricted float	g,
		unrestricted float	b,
		unrestricted float	a
	)

setShadow() [4/4]

void CanvasRenderingContext2D::setShadow	(	float	width,
		unrestricted float	height,
		unrestricted float	blur,
		unrestricted float	c,
		unrestricted float	m,
		unrestricted float	y,
		unrestricted float	k,
		unrestricted float	a
	)

setStrokeColor() [1/4]

void CanvasRenderingContext2D::setStrokeColor	(	DOMString	color,
		optional unrestricted float	alpha
	)

setStrokeColor() [2/4]

void CanvasRenderingContext2D::setStrokeColor	(	unrestricted float	grayLevel,
		optional float	alpha = 1
	)

setStrokeColor() [3/4]

void CanvasRenderingContext2D::setStrokeColor	(	unrestricted float	r,
		unrestricted float	g,
		unrestricted float	b,
		unrestricted float	a
	)

setStrokeColor() [4/4]

void CanvasRenderingContext2D::setStrokeColor	(	unrestricted float	c,
		unrestricted float	m,
		unrestricted float	y,
		unrestricted float	k,
		unrestricted float	a
	)

setTransform()

void CanvasRenderingContext2D::setTransform	(	unrestricted float	m11,
		unrestricted float	m12,
		unrestricted float	m21,
		unrestricted float	m22,
		unrestricted float	dx,
		unrestricted float	dy
	)

stroke() [1/2]

void CanvasRenderingContext2D::stroke

(

DOMPath

path

)

stroke() [2/2]

void CanvasRenderingContext2D::stroke

(

)

strokeRect()

void CanvasRenderingContext2D::strokeRect	(	unrestricted float	x,
		unrestricted float	y,
		unrestricted float	width,
		unrestricted float	height
	)

strokeText()

void CanvasRenderingContext2D::strokeText	(	DOMString	text,
		unrestricted float	x,
		unrestricted float	y,
		optional unrestricted float	maxWidth
	)

transform()

void CanvasRenderingContext2D::transform	(	unrestricted float	m11,
		unrestricted float	m12,
		unrestricted float	m21,
		unrestricted float	m22,
		unrestricted float	dx,
		unrestricted float	dy
	)

translate()

void CanvasRenderingContext2D::translate	(	unrestricted float	tx,
		unrestricted float	ty
	)

webkitGetImageDataHD()

ImageData CanvasRenderingContext2D::webkitGetImageDataHD	(	float	sx,
		float	sy,
		float	sw,
		float	sh
	)

webkitPutImageDataHD() [1/2]

void CanvasRenderingContext2D::webkitPutImageDataHD	(	ImageData	imagedata,
		float	dx,
		float	dy
	)

webkitPutImageDataHD() [2/2]

void CanvasRenderingContext2D::webkitPutImageDataHD	(	ImageData	imagedata,
		float	dx,
		float	dy,
		float	dirtyX,
		float	dirtyY,
		float	dirtyWidth,
		float	dirtyHeight
	)

Member Data Documentation

canvas

readonly attribute HTMLCanvasElement CanvasRenderingContext2D::canvas

direction

attribute DOMString CanvasRenderingContext2D::direction

font

attribute DOMString CanvasRenderingContext2D::font

globalAlpha

attribute unrestricted float CanvasRenderingContext2D::globalAlpha

globalCompositeOperation

attribute DOMString CanvasRenderingContext2D::globalCompositeOperation

imageSmoothingEnabled

attribute boolean CanvasRenderingContext2D::imageSmoothingEnabled

imageSmoothingQuality

attribute ImageSmoothingQuality CanvasRenderingContext2D::imageSmoothingQuality

lineCap

attribute DOMString CanvasRenderingContext2D::lineCap

lineDashOffset

attribute unrestricted float CanvasRenderingContext2D::lineDashOffset

lineJoin

attribute DOMString CanvasRenderingContext2D::lineJoin

lineWidth

attribute unrestricted float CanvasRenderingContext2D::lineWidth

miterLimit

attribute unrestricted float CanvasRenderingContext2D::miterLimit

shadowBlur

attribute unrestricted float CanvasRenderingContext2D::shadowBlur

shadowColor

attribute DOMString CanvasRenderingContext2D::shadowColor

shadowOffsetX

attribute unrestricted float CanvasRenderingContext2D::shadowOffsetX

shadowOffsetY

attribute unrestricted float CanvasRenderingContext2D::shadowOffsetY

textAlign

attribute DOMString CanvasRenderingContext2D::textAlign

textBaseline

attribute DOMString CanvasRenderingContext2D::textBaseline

webkitBackingStorePixelRatio

readonly attribute float CanvasRenderingContext2D::webkitBackingStorePixelRatio

webkitImageSmoothingEnabled

attribute boolean CanvasRenderingContext2D::webkitImageSmoothingEnabled

webkitLineDash

attribute sequence<unrestricted float> CanvasRenderingContext2D::webkitLineDash

webkitLineDashOffset

attribute unrestricted float CanvasRenderingContext2D::webkitLineDashOffset

---

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

• Source/WebCore/html/canvas/CanvasRenderingContext2D.idl