/**
* Apply an arbitrary colorfilter to the image.
*
* @param cf the colorfilter to apply (may be null)
*/
public void setColorFilter(ColorFilter cf) {
if (mColorFilter != cf) {
mColorFilter = cf;
applyColorMod();
invalidate();
}
}
public void setAlpha(int alpha) {
alpha &= 0xFF; // keep it legal
if (mAlpha != alpha) {
mAlpha = alpha;
applyColorMod();
invalidate();
}
}
@Override
protected boolean onSetAlpha(int alpha) {
if (getBackground() == null) {
int scale = alpha + (alpha >> 7);
if (mViewAlphaScale != scale) {
mViewAlphaScale = scale;
applyColorMod();
}
return true;
}
return false;
}
private void updateDrawable(Drawable d) {
if (mDrawable != null) {
mDrawable.setCallback(null);
unscheduleDrawable(mDrawable);
}
mDrawable = d;
if (d != null) {
d.setCallback(this);
if (d.isStateful()) {
d.setState(getDrawableState());
}
d.setLevel(mLevel);
mDrawableWidth = d.getIntrinsicWidth();
mDrawableHeight = d.getIntrinsicHeight();
applyColorMod();
configureBounds();
}
}
