RoundedVignetteBitmapDisplayer.java 文件源码

protected void onBoundsChange(Rect bounds) {
    super.onBoundsChange(bounds);
    RadialGradient vignette = new RadialGradient(this.mRect.centerX(), (this.mRect.centerY() * 1.0f) / 0.7f, this.mRect.centerX() * 1.3f, new int[]{0, 0, 2130706432}, new float[]{0.0f, 0.7f, 1.0f}, TileMode.CLAMP);
    Matrix oval = new Matrix();
    oval.setScale(1.0f, 0.7f);
    vignette.setLocalMatrix(oval);
    this.paint.setShader(new ComposeShader(this.bitmapShader, vignette, Mode.SRC_OVER));
}