@Override
protected synchronized void onDraw(Canvas canvas) {
if ((mThumb != null) && (mDots.size() > 1)) {
if (isSelected) {
for (Dot dot : mDots) {
if (dot.isSelected) {
Rect bounds = mThumb.copyBounds();
bounds.right = dot.mX;
bounds.left = dot.mX;
mThumb.setBounds(bounds);
break;
}
}
} else {
int intervalWidth = mDots.get(1).mX - mDots.get(0).mX;
Rect bounds = mThumb.copyBounds();
// find nearest dot
if ((mDots.get(mDots.size() - 1).mX - bounds.centerX()) < 0) {
bounds.right = mDots.get(mDots.size() - 1).mX;
bounds.left = mDots.get(mDots.size() - 1).mX;
mThumb.setBounds(bounds);
for (Dot dot : mDots) {
dot.isSelected = false;
}
mDots.get(mDots.size() - 1).isSelected = true;
handleClick(mDots.get(mDots.size() - 1));
} else {
for (int i = 0; i < mDots.size(); i++) {
if (Math.abs(mDots.get(i).mX - bounds.centerX()) <= (intervalWidth / 2)) {
bounds.right = mDots.get(i).mX;
bounds.left = mDots.get(i).mX;
mThumb.setBounds(bounds);
mDots.get(i).isSelected = true;
handleClick(mDots.get(i));
} else {
mDots.get(i).isSelected = false;
}
}
}
}
}
super.onDraw(canvas);
}
