package com.prt2121.capstone

import android.graphics.*
import com.squareup.picasso.Transformation

/**
 * Created by pt2121 on 12/4/15.
 *
 * CircleTransform for Picasso
 */
class CircleTransform : Transformation {
  override fun transform(source: Bitmap): Bitmap {
    val size = Math.min(source.width, source.height)
    val x = (source.width - size) / 2
    val y = (source.height - size) / 2
    val squaredBitmap = Bitmap.createBitmap(source, x, y, size, size)
    if (squaredBitmap !== source) {
      source.recycle()
    }
    val bitmap = Bitmap.createBitmap(size, size, source.config)
    val canvas = Canvas(bitmap)
    val paint = Paint()
    val shader = BitmapShader(squaredBitmap, Shader.TileMode.CLAMP, Shader.TileMode.CLAMP)
    paint.shader = shader
    paint.isAntiAlias = true
    val r = size / 2f
    canvas.drawCircle(r, r, r, paint)
    squaredBitmap.recycle()
    return bitmap
  }

  override fun key(): String {
    return "circle"
  }
}