kanvas/com.juul.krayon.kanvas/Kanvas

Kanvas

interface Kanvas

Something to draw on. Implementations are not required to be safe across multiple threads.

Inheritors

Properties

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abstract val height: Float

Gets the height of the canvas.

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abstract val width: Float

Gets the width of the canvas.

Functions

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abstract fun drawArc(left: Float, top: Float, right: Float, bottom: Float, startAngle: Float, sweepAngle: Float, paint: Paint)

Draw an arc that fits in the oval defined by the rectangle left, top, right, and bottom, from startAngle (in degrees, with 0 at the right) to startAngle + sweepAngle.

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abstract fun drawCircle(centerX: Float, centerY: Float, radius: Float, paint: Paint)

Draw a circle at centerX, centerY with size defined by its radius.

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abstract fun drawColor(color: Color)

Draw a color over the entire canvas. Implementations may or may not restrict this to the current clip.

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abstract fun drawLine(startX: Float, startY: Float, endX: Float, endY: Float, paint: Paint)

Draw a line from startX, startY to endX, endY.

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abstract fun drawOval(left: Float, top: Float, right: Float, bottom: Float, paint: Paint)

Draw an oval defined by the rectangle left, top, right, and bottom.

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abstract fun drawPath(path: Path, paint: Paint)

Draws a Path.

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abstract fun drawRect(left: Float, top: Float, right: Float, bottom: Float, paint: Paint)

Draws the rectangle left, top, right, bottom.

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abstract fun drawText(text: CharSequence, x: Float, y: Float, paint: Paint)

Draws a string of text at x, y. Exact horizontal behavior is controlled by the paint's alignment.

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abstract fun pop()

Removes the last pushClip or pushTransform operation.

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abstract fun pushClip(clip: Clip)

Pushes a clip to the canvas. Remove it with pop.

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abstract fun pushTransform(transform: Transform)

Pushes a transform to the canvas. Remove it with pop.

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inline fun Kanvas.withClip(clip: Clip, actions: Kanvas.() -> Unit)

Invokes actions inside of a Kanvas.pushClip/Kanvas.pop pair.

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inline fun Kanvas.withTransform(transform: Transform, actions: Kanvas.() -> Unit)

Invokes actions inside of a Kanvas.pushTransform/Kanvas.pop pair.