dart:html

CanvasRenderingContext2D class

Implemented types

• CanvasRenderingContext

Annotations

• @Native("CanvasRenderingContext2D")

Properties

backingStorePixelRatio → double

read-only

Deprecated always returns 1.0

canvas → CanvasElement

read-only, override

currentTransform ↔ Matrix?

read / write

direction ↔ String?

read / write

fillStyle ↔ Object?

@Creates('String|CanvasGradient|CanvasPattern'), @Returns('String|CanvasGradient|CanvasPattern'), read / write

filter ↔ String?

read / write

font ↔ String

read / write

globalAlpha ↔ num

read / write

globalCompositeOperation ↔ String

read / write

hashCode → int

read-only, inherited

The hash code for this object. [...]

imageSmoothingEnabled ↔ bool?

read / write

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

imageSmoothingQuality ↔ String?

read / write

lineCap ↔ String

read / write

lineDashOffset ↔ num

@SupportedBrowser(SupportedBrowser.CHROME), @SupportedBrowser(SupportedBrowser.IE, '11'), @SupportedBrowser(SupportedBrowser.SAFARI), @Unstable(), read / write

lineJoin ↔ String

read / write

lineWidth ↔ num

read / write

miterLimit ↔ num

read / write

runtimeType → Type

read-only, inherited

A representation of the runtime type of the object.

shadowBlur ↔ num

read / write

shadowColor ↔ String

read / write

shadowOffsetX ↔ num

read / write

shadowOffsetY ↔ num

read / write

strokeStyle ↔ Object?

@Creates('String|CanvasGradient|CanvasPattern'), @Returns('String|CanvasGradient|CanvasPattern'), read / write

textAlign ↔ String

read / write

textBaseline ↔ String

read / write

Methods

addHitRegion([Map? options]) → void

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

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

beginPath() → void

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

clearHitRegions() → void

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

clip([dynamic path_OR_winding, String? winding]) → void

closePath() → void

createImageData(dynamic data_OR_imagedata_OR_sw, [int? sh_OR_sw, dynamic imageDataColorSettings_OR_sh, Map? imageDataColorSettings]) → ImageData

@Creates('ImageData|=Object')

createImageDataFromImageData(ImageData imagedata) → ImageData

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

createPattern(Object image, String repetitionType) → CanvasPattern?

createPatternFromImage(ImageElement image, String repetitionType) → CanvasPattern

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

drawFocusIfNeeded(dynamic element_OR_path, [Element? element]) → void

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

@JSName('drawImage')

Draws an image from a CanvasImageSource to this canvas. [...]

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

@JSName('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

@JSName('drawImage')

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

drawImageToRect(CanvasImageSource source, Rectangle<num> destRect, {Rectangle<num>? sourceRect}) → void

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

fill([dynamic path_OR_winding, String? winding]) → void

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

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

Draws text to the canvas. [...]

getContextAttributes() → Map

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

@Creates('ImageData|=Object')

getLineDash() → List<num>

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

isContextLost() → bool

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

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

lineTo(num x, num y) → void

measureText(String text) → TextMetrics

moveTo(num x, num y) → void

noSuchMethod(Invocation invocation) → dynamic

inherited

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

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

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

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

removeHitRegion(String id) → void

resetTransform() → void

restore() → void

rotate(num angle) → void

save() → void

scale(num x, num y) → void

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

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

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

stroke([Path2D? path]) → void

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

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

toString() → String

inherited

A string representation of this object. [...]

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

translate(num x, num y) → void

Operators

operator ==(Object other) → bool

inherited

The equality operator. [...]