class CanvasRenderingContext2D extends Object
The 2D rendering context for the drawing surface of a <canvas> element. To get this object, call getContext() on a <canvas>, supplying "2d" as the argument:
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- new CanvasRenderingContext2D()
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- def arc(x: Double, y: Double, radius: Double, startAngle: Double, endAngle: Double): Unit
Adds an arc to the path which is centered at (x, y) position with radius r starting at startAngle and ending at endAngle going in the given direction by anticlockwise (defaulting to clockwise).
- def arc(x: Double, y: Double, radius: Double, startAngle: Double, endAngle: Double, anticlockwise: Boolean): Unit
- def arcTo(x1: Double, y1: Double, x2: Double, y2: Double, radius: Double): Unit
Adds an arc with the given control points and radius, connected to the previous point by a straight line.
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- def beginPath(): Unit
Starts a new path by resetting the list of sub-paths.
Starts a new path by resetting the list of sub-paths. Call this method when you want to create a new path.
- def bezierCurveTo(cp1x: Double, cp1y: Double, cp2x: Double, cp2y: Double, x: Double, y: Double): Unit
- var canvas: HTMLCanvasElement
Back-reference to the canvas element for which this context was created.
Back-reference to the canvas element for which this context was created. Read only.
- def clearRect(x: Double, y: Double, w: Double, h: Double): Unit
Sets all pixels in the rectangle defined by starting point (x, y) and size (width, height) to transparent black.
- def clip(fillRule: String = js.native): Unit
Creates a clipping path from the current sub-paths.
Creates a clipping path from the current sub-paths. Everything drawn after clip() is called appears inside the clipping path only. For an example, see Clipping paths in the Canvas tutorial.
- def clone(): AnyRef
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- def closePath(): Unit
Tries to draw a straight line from the current point to the start.
Tries to draw a straight line from the current point to the start. If the shape has already been closed or has only one point, this function does nothing.
- def createImageData(imageDataOrSw: Any, sh: Double = js.native): ImageData
Creates a new, blank ImageData object with the specified dimensions.
Creates a new, blank ImageData object with the specified dimensions. All of the pixels in the new object are transparent black.
- def createLinearGradient(x0: Double, y0: Double, x1: Double, y1: Double): CanvasGradient
- def createPattern(image: HTMLElement, repetition: String): CanvasPattern
- def createRadialGradient(x0: Double, y0: Double, r0: Double, x1: Double, y1: Double, r1: Double): CanvasGradient
- def drawImage(image: HTMLElement, offsetX: Double, offsetY: Double, width: Double = js.native, height: Double = js.native, canvasOffsetX: Double = js.native, canvasOffsetY: Double = js.native, canvasImageWidth: Double = js.native, canvasImageHeight: Double = js.native): Unit
Draws the specified image.
Draws the specified image. This method is available in multiple formats, providing a great deal of flexibility in its use.
- def ellipse(x: Double, y: Double, radiusX: Double, radiusY: Double, rotation: Double, startAngle: Double, endAngle: Double, anticlockwise: Boolean = js.native): Unit
The ellipse() method creates an elliptical arc centered at (x, y) with the radii radiusX and radiusY.
The ellipse() method creates an elliptical arc centered at (x, y) with the radii radiusX and radiusY. The path starts at startAngle and ends at endAngle, and travels in the direction given by anticlockwise (defaulting to clockwise).
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- def fill(): Unit
Fills the subpaths with the current fill style.
- def fillRect(x: Double, y: Double, w: Double, h: Double): Unit
Draws a filled rectangle at (x, y) position whose size is determined by width and height.
- var fillStyle: Any
A CSS color, a CanvasGradient or CanvasPattern, to use as a fill.
- def fillText(text: String, x: Double, y: Double, maxWidth: Double = js.native): Unit
- def finalize(): Unit
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- var font: String
Default value 10px sans-serif
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- def getImageData(sx: Double, sy: Double, sw: Double, sh: Double): ImageData
Returns an ImageData object representing the underlying pixel data for the area of the canvas denoted by the rectangle which starts at (sx, sy) and has an sw width and sh height.
- def getLineDash(): Array[Double]
Returns a dash list array containing an even number of non-negative numbers.
- var globalAlpha: Double
Alpha value that is applied to shapes and images before they are composited onto the canvas.
Alpha value that is applied to shapes and images before they are composited onto the canvas. Default 1.0 (opaque).
- var globalCompositeOperation: String
With globalAlpha applied this sets how shapes and images are drawn onto the existing bitmap.
With globalAlpha applied this sets how shapes and images are drawn onto the existing bitmap. Possible values: source-atop source-in source-out source-over (default) destination-atop destination-in destination-out destination-over lighter darker copy xor
- def hasOwnProperty(v: String): Boolean
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- var imageSmoothingEnabled: Boolean
A boolean value indicating whether to smooth scaled images or not.
A boolean value indicating whether to smooth scaled images or not. The default value is true.
- final def isInstanceOf[T0]: Boolean
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- def isPointInPath(x: Double, y: Double): Boolean
Reports whether or not the specified point is contained in the current path.
- def isPointInPath(x: Double, y: Double, fillRule: String): Boolean
- def isPrototypeOf(v: Object): Boolean
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- var lineCap: String
Type of endings on the end of lines.
Type of endings on the end of lines. Possible values: butt (default), round, square
- var lineDashOffset: Double
Specifies where to start a dasharray on a line.
- var lineJoin: String
Defines the type of corners where two lines meet.
Defines the type of corners where two lines meet. Possible values: round, bevel, miter (default)
- def lineTo(x: Double, y: Double): Unit
Connects the last point in the subpath to the x, y coordinates with a straight line.
- var lineWidth: Double
Width of lines.
Width of lines. Default 1.0
- def measureText(text: String): TextMetrics
- var miterLimit: Double
Default 10
- def moveTo(x: Double, y: Double): Unit
Moves the starting point of a new subpath to the (x, y) coordinates.
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- def putImageData(imagedata: ImageData, dx: Double, dy: Double, dirtyX: Double = js.native, dirtyY: Double = js.native, dirtyWidth: Double = js.native, dirtyHeight: Double = js.native): Unit
- def quadraticCurveTo(cpx: Double, cpy: Double, x: Double, y: Double): Unit
- def rect(x: Double, y: Double, w: Double, h: Double): Unit
- def restore(): Unit
Restores the drawing style state to the last element on the 'state stack' saved by save().
- def rotate(angle: Double): Unit
- def save(): Unit
Saves the current drawing style state using a stack so you can revert any change you make to it using restore().
- def scale(x: Double, y: Double): Unit
- def setLineDash(segments: Array[Double]): Unit
- def setTransform(m11: Double, m12: Double, m21: Double, m22: Double, dx: Double, dy: Double): Unit
- var shadowBlur: Double
Specifies the blurring effect.
Specifies the blurring effect. Default 0
- var shadowColor: String
Color of the shadow.
Color of the shadow. Default fully-transparent black.
- var shadowOffsetX: Double
Horizontal distance the shadow will be offset.
Horizontal distance the shadow will be offset. Default 0.
- var shadowOffsetY: Double
Vertical distance the shadow will be offset.
Vertical distance the shadow will be offset. Default 0.
- def stroke(): Unit
Strokes the subpaths with the current stroke style.
- def strokeRect(x: Double, y: Double, w: Double, h: Double): Unit
Paints a rectangle which has a starting point at (x, y) and has a w width and an h height onto the canvas, using the current stroke style.
- var strokeStyle: Any
A CSS color, a CanvasGradient or CanvasPattern, to use as a line around shapes.
- def strokeText(text: String, x: Double, y: Double, maxWidth: Double = js.native): Unit
- final def synchronized[T0](arg0: => T0): T0
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- var textAlign: String
Possible values: start (default), end, left, right or center.
- var textBaseline: String
Possible values: top, hanging, middle, alphabetic (default), ideographic, bottom
- def toLocaleString(): String
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- def transform(m11: Double, m12: Double, m21: Double, m22: Double, dx: Double, dy: Double): Unit
- def translate(x: Double, y: Double): Unit
Moves the origin point of the context to (x, y).
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