dart:html

CanvasRenderingContext2D class

Inheritance

• Object
• JSObject
• DartHtmlDomObject
• CanvasRenderingContext2D

Implements

• CanvasRenderingContext

Annotations

• @DomName('CanvasRenderingContext2D')

Static Properties

instanceRuntimeType → Type

@Deprecated("Internal Use Only"), read-only

Constructors

CanvasRenderingContext2D.internal_()

Properties

backingStorePixelRatio → double

@deprecated, @DomName('CanvasRenderingContext2D.webkitBackingStorePixelRation'), @Experimental(), read-only

Deprecated always returns 1.0

canvas → CanvasElement

@DocsEditable(), @DomName('CanvasRenderingContext2D.canvas'), @Experimental(), read-only

currentTransform → Matrix

@DocsEditable(), @DomName('CanvasRenderingContext2D.currentTransform'), @Experimental(), read / write

direction → String

@DocsEditable(), @DomName('CanvasRenderingContext2D.direction'), @Experimental(), read / write

fillStyle → Object

@DocsEditable(), @DomName('CanvasRenderingContext2D.fillStyle'), read / write

filter → String

@DocsEditable(), @DomName('CanvasRenderingContext2D.filter'), @Experimental(), read / write

font → String

@DocsEditable(), @DomName('CanvasRenderingContext2D.font'), read / write

globalAlpha → num

@DocsEditable(), @DomName('CanvasRenderingContext2D.globalAlpha'), read / write

globalCompositeOperation → String

@DocsEditable(), @DomName('CanvasRenderingContext2D.globalCompositeOperation'), read / write

imageSmoothingEnabled → bool

@DocsEditable(), @DomName('CanvasRenderingContext2D.imageSmoothingEnabled'), @Experimental(), read / write

Whether images and patterns on this canvas will be smoothed when this canvas is scaled.

imageSmoothingQuality → String

@DocsEditable(), @DomName('CanvasRenderingContext2D.imageSmoothingQuality'), @Experimental(), read / write

lineCap → String

@DocsEditable(), @DomName('CanvasRenderingContext2D.lineCap'), read / write

lineDashOffset → num

@DocsEditable(), @DomName('CanvasRenderingContext2D.lineDashOffset'), read / write

lineJoin → String

@DocsEditable(), @DomName('CanvasRenderingContext2D.lineJoin'), read / write

lineWidth → num

@DocsEditable(), @DomName('CanvasRenderingContext2D.lineWidth'), read / write

miterLimit → num

@DocsEditable(), @DomName('CanvasRenderingContext2D.miterLimit'), read / write

shadowBlur → num

@DocsEditable(), @DomName('CanvasRenderingContext2D.shadowBlur'), read / write

shadowColor → String

@DocsEditable(), @DomName('CanvasRenderingContext2D.shadowColor'), read / write

shadowOffsetX → num

@DocsEditable(), @DomName('CanvasRenderingContext2D.shadowOffsetX'), read / write

shadowOffsetY → num

@DocsEditable(), @DomName('CanvasRenderingContext2D.shadowOffsetY'), read / write

strokeStyle → Object

@DocsEditable(), @DomName('CanvasRenderingContext2D.strokeStyle'), read / write

textAlign → String

@DocsEditable(), @DomName('CanvasRenderingContext2D.textAlign'), read / write

textBaseline → String

@DocsEditable(), @DomName('CanvasRenderingContext2D.textBaseline'), read / write

hashCode → int

read-only, inherited

runtimeType → Type

read-only, inherited

A representation of the runtime type of the object.

Operators

operator ==(other) → bool

inherited

The equality operator.

Methods

addHitRegion([Map options ]) → void

arc(num x, num y, num radius, num startAngle, num endAngle, [ bool anticlockwise = false ]) → void

@DomName('CanvasRenderingContext2D.arc')

arcTo(num x1, num y1, num x2, num y2, num radius) → void

@DocsEditable(), @DomName('CanvasRenderingContext2D.arcTo')

beginPath() → void

@DocsEditable(), @DomName('CanvasRenderingContext2D.beginPath')

bezierCurveTo(num cp1x, num cp1y, num cp2x, num cp2y, num x, num y) → void

@DocsEditable(), @DomName('CanvasRenderingContext2D.bezierCurveTo')

clearHitRegions() → void

@DocsEditable(), @DomName('CanvasRenderingContext2D.clearHitRegions'), @Experimental()

clearRect(num x, num y, num width, num height) → void

@DocsEditable(), @DomName('CanvasRenderingContext2D.clearRect')

clip([path_OR_winding, String winding ]) → void

closePath() → void

@DocsEditable(), @DomName('CanvasRenderingContext2D.closePath')

createImageData(imagedata_OR_sw, [ num sh ]) → ImageData

createImageDataFromImageData(ImageData imagedata) → ImageData

@DocsEditable(), @DomName('CanvasRenderingContext2D.createImageDataFromImageData')

createLinearGradient(num x0, num y0, num x1, num y1) → CanvasGradient

@DocsEditable(), @DomName('CanvasRenderingContext2D.createLinearGradient')

createPattern(Object image, String repetitionType) → CanvasPattern

@DocsEditable(), @DomName('CanvasRenderingContext2D.createPattern')

createPatternFromImage(ImageElement image, String repetitionType) → CanvasPattern

@DomName('CanvasRenderingContext2D.createPatternFromImage')

createRadialGradient(num x0, num y0, num r0, num x1, num y1, num r1) → CanvasGradient

@DocsEditable(), @DomName('CanvasRenderingContext2D.createRadialGradient')

drawFocusIfNeeded(element_OR_path, [ Element element ]) → void

drawImage(CanvasImageSource source, num destX, num destY) → void

@DomName('CanvasRenderingContext2D.drawImage')

Draws an image from a CanvasImageSource to this canvas.

drawImageScaled(CanvasImageSource source, num destX, num destY, num destWidth, num destHeight) → void

@DomName('CanvasRenderingContext2D.drawImage')

Draws an image from a CanvasImageSource to an area of this canvas.

drawImageScaledFromSource(CanvasImageSource source, num sourceX, num sourceY, num sourceWidth, num sourceHeight, num destX, num destY, num destWidth, num destHeight) → void

@DomName('CanvasRenderingContext2D.drawImage')

Draws an image from a CanvasImageSource to an area of this canvas.

drawImageToRect(CanvasImageSource source, Rectangle destRect, { Rectangle sourceRect }) → void

@DomName('CanvasRenderingContext2D.drawImage')

Draws an image from a CanvasImageSource to an area of this canvas.

ellipse(num x, num y, num radiusX, num radiusY, num rotation, num startAngle, num endAngle, bool anticlockwise) → void

@DocsEditable(), @DomName('CanvasRenderingContext2D.ellipse'), @Experimental()

fill([path_OR_winding, String winding ]) → void

fillRect(num x, num y, num width, num height) → void

@DocsEditable(), @DomName('CanvasRenderingContext2D.fillRect')

fillText(String text, num x, num y, [ num maxWidth ]) → void

getContextAttributes() → dynamic

@DocsEditable(), @DomName('CanvasRenderingContext2D.getContextAttributes'), @Experimental()

getImageData(num sx, num sy, num sw, num sh) → ImageData

@DocsEditable(), @DomName('CanvasRenderingContext2D.getImageData')

getLineDash() → List<num>

@DomName('CanvasRenderingContext2D.getLineDash'), @SupportedBrowser(SupportedBrowser.CHROME), @SupportedBrowser(SupportedBrowser.IE, '11'), @SupportedBrowser(SupportedBrowser.SAFARI), @Unstable()

isContextLost() → bool

@DocsEditable(), @DomName('CanvasRenderingContext2D.isContextLost'), @Experimental()

isPointInPath(path_OR_x, num x_OR_y, [ winding_OR_y, String winding ]) → bool

isPointInStroke(path_OR_x, num x_OR_y, [ num y ]) → bool

lineTo(num x, num y) → void

@DocsEditable(), @DomName('CanvasRenderingContext2D.lineTo')

measureText(String text) → TextMetrics

@DocsEditable(), @DomName('CanvasRenderingContext2D.measureText')

moveTo(num x, num y) → void

@DocsEditable(), @DomName('CanvasRenderingContext2D.moveTo')

putImageData(ImageData imagedata, num dx, num dy, [ num dirtyX, num dirtyY, num dirtyWidth, num dirtyHeight ]) → void

quadraticCurveTo(num cpx, num cpy, num x, num y) → void

@DocsEditable(), @DomName('CanvasRenderingContext2D.quadraticCurveTo')

rect(num x, num y, num width, num height) → void

@DocsEditable(), @DomName('CanvasRenderingContext2D.rect')

removeHitRegion(String id) → void

@DocsEditable(), @DomName('CanvasRenderingContext2D.removeHitRegion'), @Experimental()

resetTransform() → void

@DocsEditable(), @DomName('CanvasRenderingContext2D.resetTransform'), @Experimental()

restore() → void

@DocsEditable(), @DomName('CanvasRenderingContext2D.restore')

rotate(num angle) → void

@DocsEditable(), @DomName('CanvasRenderingContext2D.rotate')

save() → void

@DocsEditable(), @DomName('CanvasRenderingContext2D.save')

scale(num x, num y) → void

@DocsEditable(), @DomName('CanvasRenderingContext2D.scale')

scrollPathIntoView([Path2D path ]) → void

setFillColorHsl(int h, num s, num l, [ num a = 1 ]) → void

Sets the color used inside shapes. h is in degrees, 0-360. s, l are in percent, 0-100. a is 0-1.

setFillColorRgb(int r, int g, int b, [ num a = 1 ]) → void

Sets the color used inside shapes. r, g, b are 0-255, a is 0-1.

setLineDash(List<num> dash) → void

@DocsEditable(), @DomName('CanvasRenderingContext2D.setLineDash')

setStrokeColorHsl(int h, num s, num l, [ num a = 1 ]) → void

Sets the color used for stroking shapes. h is in degrees, 0-360. s, l are in percent, 0-100. a is 0-1.

setStrokeColorRgb(int r, int g, int b, [ num a = 1 ]) → void

Sets the color used for stroking shapes. r, g, b are 0-255, a is 0-1.

setTransform(num a, num b, num c, num d, num e, num f) → void

@DocsEditable(), @DomName('CanvasRenderingContext2D.setTransform')

stroke([Path2D path ]) → void

strokeRect(num x, num y, num width, num height) → void

@DocsEditable(), @DomName('CanvasRenderingContext2D.strokeRect')

strokeText(String text, num x, num y, [ num maxWidth ]) → void

transform(num a, num b, num c, num d, num e, num f) → void

@DocsEditable(), @DomName('CanvasRenderingContext2D.transform')

translate(num x, num y) → void

@DocsEditable(), @DomName('CanvasRenderingContext2D.translate')

noSuchMethod(Invocation invocation) → dynamic

inherited

Invoked when a non-existent method or property is accessed.

toString() → String

inherited

Returns the result of the JavaScript objects toString method.