TransformationUtils

A class with methods to efficiently resize Bitmaps.

Functions

open fun centerCrop( pool: BitmapPool, inBitmap: Bitmap, width: Int, height: Int): Bitmap

A potentially expensive operation to crop the given Bitmap so that it fills the given dimensions.

open fun centerInside( pool: BitmapPool, inBitmap: Bitmap, width: Int, height: Int): Bitmap

If the Bitmap is smaller or equal to the Target it returns the original size, if not then fitCenter is called instead.

open fun circleCrop( pool: BitmapPool, inBitmap: Bitmap, destWidth: Int, destHeight: Int): Bitmap

Crop the image to a circle and resize to the specified width/height.

open fun fitCenter( pool: BitmapPool, inBitmap: Bitmap, width: Int, height: Int): Bitmap

An expensive operation to resize the given Bitmap down so that it fits within the given dimensions maintain the original proportions.

Get the # of degrees an image must be rotated to match the given exif orientation.

Returns true if the given exif orientation indicates that a transformation is necessary and false otherwise.

open fun rotateImage(imageToOrient: Bitmap, degreesToRotate: Int): Bitmap

This is an expensive operation that copies the image in place with the pixels rotated.

open fun rotateImageExif( pool: BitmapPool, inBitmap: Bitmap, exifOrientation: Int): Bitmap

Rotate and/or flip the image to match the given exif orientation.

open fun roundedCorners( pool: BitmapPool, inBitmap: Bitmap, roundingRadius: Int): Bitmap

~~open~~ ~~fun~~ ~~roundedCorners~~( pool: BitmapPool, inBitmap: Bitmap, width: Int, height: Int, roundingRadius: Int): ~~Bitmap~~

Creates a bitmap from a source bitmap and rounds the corners.

open fun roundedCorners( pool: BitmapPool, inBitmap: Bitmap, topLeft: Float, topRight: Float, bottomRight: Float, bottomLeft: Float): Bitmap

Creates a bitmap from a source bitmap and rounds the corners, applying a potentially different [X, Y] radius to each corner.

open fun setAlpha(inBitmap: Bitmap, outBitmap: Bitmap)

Sets the alpha of the Bitmap we're going to re-use to the alpha of the Bitmap we're going to transform.