What is Transformers?

An Android transformation library providing a variety of image transformations for Coil, Glide, Picasso, and Fresco.

Part of the sample

Glide Transformations, Picasso Transformations, Fresco Processors are deprecated.
Development will stop soon.. For an up-to-date version, please use this.

Installation

Requirements

• Android 5.0+ Lollipop (API level 21)

Gradle settings

repositories {
  mavenCentral()
}

This Transformer is NOT using android.support.v8.rendererscript because librs.so make the APK file too big.

For Coil

dependencies {
  implementation 'jp.wasabeef.transformers:coil:1.0.6'
  // Use the GPU Filters 
  implementation 'jp.wasabeef.transformers:coil-gpu:1.0.6'
}

imageView.load(IMAGE_URL) {
  transformations(
    CropCenterTransformation(),
    RoundedCornersTransformation(radius = 120, cornerType = CornerType.DIAGONAL_FROM_TOP_LEFT)
  )
}

For Glide

dependencies {
  implementation 'jp.wasabeef.transformers:glide:1.0.6'
  // Use the GPU Filters 
  implementation 'jp.wasabeef.transformers:glide-gpu:1.0.6'
}

Glide.with(context)
  .load(IMAGE_URL)
  .apply(
    bitmapTransform(
      MultiTransformation(
        CropCenterTransformation(),
        BlurTransformation(context, 15, sampling = 1)
      )
    )
  ).into(imageView)

For Picasso

dependencies {
  implementation 'jp.wasabeef.transformers:picasso:1.0.6'
  // Use the GPU Filters 
  implementation 'jp.wasabeef.transformers:picasso-gpu:1.0.6'
}

Picasso.get()
  .load(IMAGE_URL)
  .fit().centerInside()
  .transform(
    mutableListOf(
      CropCenterTransformation(),
      BlurTransformation(context, 25, sampling = 4)
    )
  ).into(imageView)

For Fresco

dependencies {
  implementation 'jp.wasabeef.transformers:fresco:1.0.6'
  // Use the GPU Filters 
  implementation 'jp.wasabeef.transformers:fresco-gpu:1.0.6'
}

val request: ImageRequest =
  ImageRequestBuilder.newBuilderWithSource(IMAGE_URL.toUri())
  .setPostprocessor(BlurPostprocessor(context, 25, 4))
  .build()
holder.image.controller = Fresco.newDraweeControllerBuilder()
  .setImageRequest(request)
  .setOldController(draweeView.controller)
  .build()

With Jetpack Compose

Use Composable Images when using with Jetpack Compose.

GlideImage(
  model = IMAGE_URL,
  modifier = Modifier.preferredWidth(120.dp),
  options = RequestOptions().transform(
    BlurTransformation(context, radius = 25, sampling = 4)
  )
)

Sample transformations

Original	Mask	NinePatchMask	CropTop
CropCenter	CropBottom	CropCenterRatio16x9	CropCenterRatio4x3
CropTopRatio16x9	CropBottomRatio4x3	CropSquare	CropCircle
CropCircleWithBorder	ColorFilter	Grayscale	RoundedCorners
RoundedCornersTopLeft	RSGaussianBlurLight	RSGaussianBlurDeep	StackBlurLight
StackBlurDeep

coil, glide, picasso

• BlurTransformation
• ColorFilterTransformation
• CropCenterBottomTransformation
• CropCenterTopTransformation
• CropCenterTransformation
• CropCircleTransformation
• CropCircleWithBorderTransformation
• CropSquareTransformation
• CropTransformation
• GrayscaleTransformation
• MaskTransformation
• RoundedCornersTransformation

fresco

• BlurPostprocessor
• ColorFilterPostprocessor
• CombinePostProcessors
• GrayscalePostprocessor
• MaskPostprocessor

Sample transformations with GPUImage

We recommend that you have a ToneCurve file, as you can apply any filters you like.

Original	Sepia	Contrast	Invert
PixelLight	PixelDeep	Sketch	Swirl
Brightness	Kuawahara	Vignette	ZoomBlur
WhiteBalance	Halftone	Sharpness	Toon
ToneCurve

coil-gpu, glide-gpu, picasso-gpu

• BrightnessFilterTransformation
• ContrastFilterTransformation
• HalftoneFilterTransformation
• InvertFilterTransformation
• KuwaharaFilterTransformation
• PixelationFilterTransformation
• SepiaFilterTransformation
• SharpenFilterTransformation
• SketchFilterTransformation
• SwirlFilterTransformation
• ToneCurveFilterTransformation
• ToonFilterTransformation
• VignetteFilterTransformation
• WhiteBalanceFilterTransformation
• ZoomBlurFilterTransformation

fresco-gpu

• BrightnessFilterPostprocessor
• ContrastFilterPostprocessor
• HalftoneFilterPostprocessor
• InvertFilterPostprocessor
• KuwaharaFilterPostprocessor
• PixelationFilterPostprocessor
• SepiaFilterPostprocessor
• SharpenFilterPostprocessor
• SketchFilterPostprocessor
• SwirlFilterPostprocessor
• ToneCurveFilterPostprocessor
• ToonFilterPostprocessor
• VignetteFilterPostprocessor
• WhiteBalanceFilterPostprocessor
• ZoomBlurFilterPostprocessor

Development

Setup

Things you will need

• Linux, Mac OS X, or Windows.
• Android Studio (Preview)
• npm

$ npm install

Build

$ ./gradlew assemble

Formatting

$ ./gradlew ktlint

Publishing to Maven Central

$ ./gradlew :core:clean :core:build :core:publish
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