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Gradient Transformation For Picasso
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/** | |
* Created by Miao1007 on 2/2/15. | |
* | |
* Original Code: https://gist.github.com/miao1007/3f7e9b5f011fc188eba6 | |
*/ | |
public class GradientTransformation implements Transformation { | |
int startColor = Color.argb(240,0,0,0); | |
int endColor = Color.TRANSPARENT; | |
@Override public Bitmap transform(Bitmap source) { | |
int x = source.getWidth(); | |
int y = source.getHeight(); | |
Bitmap grandientBitmap = source.copy(source.getConfig(), true); | |
Canvas canvas = new Canvas(grandientBitmap); | |
//left-top == (0,0) , right-bottom(x,y); | |
LinearGradient grad = | |
new LinearGradient(x/2, y, x/2, y/2, startColor, endColor, Shader.TileMode.CLAMP); | |
Paint p = new Paint(Paint.DITHER_FLAG); | |
p.setShader(null); | |
p.setDither(true); | |
p.setFilterBitmap(true); | |
p.setShader(grad); | |
canvas.drawPaint(p); | |
source.recycle(); | |
return grandientBitmap; | |
} | |
@Override public String key() { | |
return "Gradient"; | |
} | |
} |
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Picasso.with(context) | |
.load(url) | |
.transform(new GradientTransformation()) | |
.into(imageview); |
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