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CircleTransform for Picasso in Kotlin
/*
* Copyright 2014 Julian Shen
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.example.picassodemo;
import android.graphics.Bitmap;
import android.graphics.BitmapShader;
import android.graphics.Canvas;
import android.graphics.Paint;
import com.squareup.picasso.Transformation;
/**
* Originally created by julian on 13/6/21.
*/
import android.graphics.*
import com.squareup.picasso.Transformation
class CircleTransform : Transformation {
private var x: Int = 0
private var y: Int = 0
override fun transform(source: Bitmap): Bitmap {
val size = Math.min(source.width, source.height)
x = (source.width - size) / 2
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, Bitmap.Config.ARGB_8888)
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() = "circle(x=$x,y=$y)"
}
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