package com.halzhang.android.example.tintedbitmapdrawableexample;
import android.content.res.Resources;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.LightingColorFilter;
import android.graphics.Paint;
import android.graphics.drawable.BitmapDrawable;
/**
* http://andraskindler.com/blog/2015/tinting_drawables/
* Created by zhanghanguo@yy.com on 2015/8/24.
*/
public final class TintedBitmapDrawable extends BitmapDrawable {
private int tint;
private int alpha;
public TintedBitmapDrawable(final Resources res, final Bitmap bitmap, final int tint) {
super(res, bitmap);
this.tint = tint;
this.alpha = Color.alpha(tint);
}
public TintedBitmapDrawable(final Resources res, final int resId, final int tint) {
super(res, BitmapFactory.decodeResource(res, resId));
this.tint = tint;
this.alpha = Color.alpha(tint);
}
public void setTint(final int tint) {
this.tint = tint;
this.alpha = Color.alpha(tint);
}
@Override
public void draw(final Canvas canvas) {
final Paint paint = getPaint();
if (paint.getColorFilter() == null) {
paint.setColorFilter(new LightingColorFilter(tint, 0));
paint.setAlpha(alpha);
}
super.draw(canvas);
}
}