skiko/org.jetbrains.skia/ImageInfo

ImageInfo

class ImageInfo(val colorInfo: ColorInfo, val width: Int, val height: Int)

Describes pixel dimensions and encoding. Bitmap, Image, Pixmap, and Surface can be created from ImageInfo. ImageInfo can be retrieved from Bitmap and Pixmap, but not from Image and Surface. For example, Image and Surface implementations may defer pixel depth, so may not completely specify ImageInfo.

ImageInfo contains dimensions, the pixel integral width and height. It encodes how pixel bits describe alpha, transparency; color components red, blue, and green; and ColorSpace, the range and linearity of colors.

Constructors

ImageInfo

constructor(width: Int, height: Int, colorType: ColorType, alphaType: ColorAlphaType)

constructor(width: Int, height: Int, colorType: ColorType, alphaType: ColorAlphaType, colorSpace: ColorSpace?)

constructor(colorInfo: ColorInfo, width: Int, height: Int)

Types

Companion

object Companion

Properties

bounds

val bounds: IRect

bytesPerPixel

val bytesPerPixel: Int

Returns number of bytes per pixel required by ColorType. Returns zero if .getColorType is ColorType.UNKNOWN.

colorAlphaType

val colorAlphaType: ColorAlphaType

colorInfo

val colorInfo: ColorInfo

colorSpace

val colorSpace: ColorSpace?

colorType

val colorType: ColorType

height

val height: Int

isEmpty

val isEmpty: Boolean

isGammaCloseToSRGB

val isGammaCloseToSRGB: Boolean

isOpaque

val isOpaque: Boolean

Returns true if ColorAlphaType is set to hint that all pixels are opaque; their alpha value is implicitly or explicitly 1.0. If true, and all pixels are not opaque, Skia may draw incorrectly.

minRowBytes

val minRowBytes: Int

Returns minimum bytes per row, computed from pixel getWidth() and ColorType, which specifies getBytesPerPixel(). Bitmap maximum value for row bytes must fit in 31 bits.

shiftPerPixel

val shiftPerPixel: Int

Returns bit shift converting row bytes to row pixels. Returns zero for ColorType.UNKNOWN.

width

val width: Int

Functions

computeByteSize

fun computeByteSize(rowBytes: Int): Int

Returns storage required by pixel array, given ImageInfo dimensions, ColorType, and rowBytes. rowBytes is assumed to be at least as large as .getMinRowBytes.

computeMinByteSize

fun computeMinByteSize(): Int

Returns storage required by pixel array, given ImageInfo dimensions, and ColorType. Uses .getMinRowBytes to compute bytes for pixel row.

computeOffset