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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final
def
##(): Int
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final
def
==(arg0: Any): Boolean
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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).
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).
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- def arc(x: Double, y: Double, radius: Double, startAngle: Double, endAngle: Double, anticlockwise: Boolean): Unit
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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.
Adds an arc with the given control points and radius, connected to the previous point by a straight line.
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final
def
asInstanceOf[T0]: T0
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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.
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- def bezierCurveTo(cp1x: Double, cp1y: Double, cp2x: Double, cp2y: Double, x: Double, y: Double): Unit
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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.
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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.
Sets all pixels in the rectangle defined by starting point (x, y) and size (width, height) to transparent black.
MDN
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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.
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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.
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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.
MDN
- 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
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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.
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final
def
eq(arg0: AnyRef): Boolean
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def
equals(arg0: Any): Boolean
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def
fill(): Unit
Fills the subpaths with the current fill style.
Fills the subpaths with the current fill style.
MDN
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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.
Draws a filled rectangle at (x, y) position whose size is determined by width and height.
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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
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def
finalize(): Unit
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var
font: String
Default value 10px sans-serif
Default value 10px sans-serif
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final
def
getClass(): Class[_]
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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.
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.
MDN
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def
getLineDash(): Array[Double]
Returns a dash list array containing an even number of non-negative numbers.
Returns a dash list array containing an even number of non-negative numbers.
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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).
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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
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def
hasOwnProperty(v: String): Boolean
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def
hashCode(): Int
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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.
Reports whether or not the specified point is contained in the current path.
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- def isPointInPath(x: Double, y: Double, fillRule: String): Boolean
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def
isPrototypeOf(v: Object): Boolean
- Definition Classes
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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
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var
lineDashOffset: Double
Specifies where to start a dasharray on a line.
Specifies where to start a dasharray on a line.
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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)
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def
lineTo(x: Double, y: Double): Unit
Connects the last point in the subpath to the x, y coordinates with a straight line.
Connects the last point in the subpath to the x, y coordinates with a straight line.
MDN
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var
lineWidth: Double
Width of lines.
Width of lines. Default 1.0
MDN
- def measureText(text: String): TextMetrics
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var
miterLimit: Double
Default 10
Default 10
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def
moveBy(deltaX: Double, deltaY: Double): Unit
Moves the current window by a specified amount.
Moves the current window by a specified amount.
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def
moveTo(x: Double, y: Double): Unit
Moves the starting point of a new subpath to the (x, y) coordinates.
Moves the starting point of a new subpath to the (x, y) coordinates.
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final
def
ne(arg0: AnyRef): Boolean
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final
def
notify(): Unit
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final
def
notifyAll(): Unit
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def
propertyIsEnumerable(v: String): Boolean
- Definition Classes
- Object
- 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
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def
restore(): Unit
Restores the drawing style state to the last element on the 'state stack' saved by save().
Restores the drawing style state to the last element on the 'state stack' saved by save().
MDN
- def rotate(angle: Double): Unit
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def
save(): Unit
Saves the current drawing style state using a stack so you can revert any change you make to it using restore().
Saves the current drawing style state using a stack so you can revert any change you make to it using restore().
MDN
- 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
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var
shadowBlur: Double
Specifies the blurring effect.
Specifies the blurring effect. Default 0
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var
shadowColor: String
Color of the shadow.
Color of the shadow. Default fully-transparent black.
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var
shadowOffsetX: Double
Horizontal distance the shadow will be offset.
Horizontal distance the shadow will be offset. Default 0.
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var
shadowOffsetY: Double
Vertical distance the shadow will be offset.
Vertical distance the shadow will be offset. Default 0.
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def
stroke(): Unit
Strokes the subpaths with the current stroke style.
Strokes the subpaths with the current stroke style.
MDN
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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.
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.
MDN
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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
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final
def
synchronized[T0](arg0: ⇒ T0): T0
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var
textAlign: String
Possible values: start (default), end, left, right or center.
Possible values: start (default), end, left, right or center.
MDN
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var
textBaseline: String
Possible values: top, hanging, middle, alphabetic (default), ideographic, bottom
Possible values: top, hanging, middle, alphabetic (default), ideographic, bottom
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def
toLocaleString(): String
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- Object
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def
toString(): String
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- def transform(m11: Double, m12: Double, m21: Double, m22: Double, dx: Double, dy: Double): Unit
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def
translate(x: Double, y: Double): Unit
Moves the origin point of the context to (x, y).
Moves the origin point of the context to (x, y).
MDN
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def
valueOf(): Any
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final
def
wait(): Unit
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def
wait(arg0: Long, arg1: Int): Unit
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wait(arg0: Long): Unit
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