CanvasRenderingContext2D class

Implements
Annotations
  • @DomName('CanvasRenderingContext2D')
  • @Native("CanvasRenderingContext2D")

Properties

backingStorePixelRatio double
Deprecated always returns 1.0
@DomName('CanvasRenderingContext2D.webkitBackingStorePixelRation'), @Experimental(), read-only
canvas CanvasElement
@DocsEditable(), @DomName('CanvasRenderingContext2D.canvas'), @Experimental(), final
currentTransform Matrix
@DocsEditable(), @DomName('CanvasRenderingContext2D.currentTransform'), @Experimental(), read / write
direction String
@DocsEditable(), @DomName('CanvasRenderingContext2D.direction'), @Experimental(), read / write
fillStyle Object
@Creates('String|CanvasGradient|CanvasPattern'), @DocsEditable(), @DomName('CanvasRenderingContext2D.fillStyle'), @Returns('String|CanvasGradient|CanvasPattern'), 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
Whether images and patterns on this canvas will be smoothed when this canvas is scaled. [...]
@DocsEditable(), @DomName('CanvasRenderingContext2D.imageSmoothingEnabled'), @Experimental(), read / write
imageSmoothingQuality String
@DocsEditable(), @DomName('CanvasRenderingContext2D.imageSmoothingQuality'), @Experimental(), read / write
lineCap String
@DocsEditable(), @DomName('CanvasRenderingContext2D.lineCap'), read / write
lineDashOffset num
@DomName('CanvasRenderingContext2D.lineDashOffset'), @SupportedBrowser(SupportedBrowser.CHROME), @SupportedBrowser(SupportedBrowser.IE, '11'), @SupportedBrowser(SupportedBrowser.SAFARI), @Unstable(), 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
@Creates('String|CanvasGradient|CanvasPattern'), @DocsEditable(), @DomName('CanvasRenderingContext2D.strokeStyle'), @Returns('String|CanvasGradient|CanvasPattern'), read / write
textAlign String
@DocsEditable(), @DomName('CanvasRenderingContext2D.textAlign'), read / write
textBaseline String
@DocsEditable(), @DomName('CanvasRenderingContext2D.textBaseline'), read / write
hashCode int
The hash code for this object. [...]
read-only, inherited
runtimeType Type
A representation of the runtime type of the object.
read-only, inherited

Methods

addHitRegion([Map options ]) → void
@DocsEditable(), @DomName('CanvasRenderingContext2D.addHitRegion'), @Experimental()
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([dynamic path_OR_winding, String winding ]) → void
@DocsEditable(), @DomName('CanvasRenderingContext2D.clip')
closePath() → void
@DocsEditable(), @DomName('CanvasRenderingContext2D.closePath')
createImageData(dynamic data_OR_imagedata_OR_sw, [ int sh_OR_sw, dynamic imageDataColorSettings_OR_sh, Map imageDataColorSettings ]) ImageData
@Creates('ImageData|=Object'), @DocsEditable(), @DomName('CanvasRenderingContext2D.createImageData')
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(dynamic element_OR_path, [ Element element ]) → void
@DocsEditable(), @DomName('CanvasRenderingContext2D.drawFocusIfNeeded'), @Experimental()
drawImage(CanvasImageSource source, num destX, num destY) → void
Draws an image from a CanvasImageSource to this canvas. [...]
@DomName('CanvasRenderingContext2D.drawImage'), @JSName('drawImage')
drawImageScaled(CanvasImageSource source, num destX, num destY, num destWidth, num destHeight) → void
Draws an image from a CanvasImageSource to an area of this canvas. [...]
@DomName('CanvasRenderingContext2D.drawImage'), @JSName('drawImage')
drawImageScaledFromSource(CanvasImageSource source, num sourceX, num sourceY, num sourceWidth, num sourceHeight, num destX, num destY, num destWidth, num destHeight) → void
Draws an image from a CanvasImageSource to an area of this canvas. [...]
@DomName('CanvasRenderingContext2D.drawImage'), @JSName('drawImage')
drawImageToRect(CanvasImageSource source, Rectangle<num> destRect, { Rectangle<num> sourceRect }) → void
Draws an image from a CanvasImageSource to an area of this canvas. [...]
@DomName('CanvasRenderingContext2D.drawImage')
ellipse(num x, num y, num radiusX, num radiusY, num rotation, num startAngle, num endAngle, bool anticlockwise) → void
@DocsEditable(), @DomName('CanvasRenderingContext2D.ellipse'), @Experimental()
fill([String winding = 'nonzero' ]) → void
@DomName('CanvasRenderingContext2D.fill')
fillRect(num x, num y, num width, num height) → void
@DocsEditable(), @DomName('CanvasRenderingContext2D.fillRect')
fillText(String text, num x, num y, [ num maxWidth ]) → void
Draws text to the canvas. [...]
@DomName('CanvasRenderingContext2D.fillText')
getContextAttributes() Map
@DocsEditable(), @DomName('CanvasRenderingContext2D.getContextAttributes'), @Experimental()
getImageData(int sx, int sy, int sw, int sh) ImageData
@Creates('ImageData|=Object'), @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(dynamic path_OR_x, num x_OR_y, [ dynamic winding_OR_y, String winding ]) bool
@DocsEditable(), @DomName('CanvasRenderingContext2D.isPointInPath')
isPointInStroke(dynamic path_OR_x, num x_OR_y, [ num y ]) bool
@DocsEditable(), @DomName('CanvasRenderingContext2D.isPointInStroke')
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, int dx, int dy, [ int dirtyX, int dirtyY, int dirtyWidth, int dirtyHeight ]) → void
@DocsEditable(), @DomName('CanvasRenderingContext2D.putImageData')
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
@DocsEditable(), @DomName('CanvasRenderingContext2D.scrollPathIntoView'), @Experimental()
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
@DomName('CanvasRenderingContext2D.setLineDash'), @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
@DocsEditable(), @DomName('CanvasRenderingContext2D.setTransform')
stroke([Path2D path ]) → void
@DocsEditable(), @DomName('CanvasRenderingContext2D.stroke')
strokeRect(num x, num y, num width, num height) → void
@DocsEditable(), @DomName('CanvasRenderingContext2D.strokeRect')
strokeText(String text, num x, num y, [ num maxWidth ]) → void
@DocsEditable(), @DomName('CanvasRenderingContext2D.strokeText')
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
Invoked when a non-existent method or property is accessed. [...]
inherited
toString() String
Returns a string representation of this object.
inherited

Operators

operator ==(dynamic other) bool
The equality operator. [...]
inherited