@Override
protected void onLayout(boolean changed, int left, int top, int right, int bottom) {
if (!mInitialized) return;
if (mInAnimation) {
rotateWheel();
mHandler.post(mRunnable);
}
mCenterX = right - left - Util.dpToPixel(IndicatorControlWheelContainer.FULL_WHEEL_RADIUS);
mCenterY = (bottom - top) / 2;
// Layout the indicators based on the current level.
// The icons are spreaded on the left side of the shutter button.
for (int i = 0; i < getChildCount(); ++i) {
View view = getChildAt(i);
// We still need to show the disabled indicators in the second level.
double radian = mChildRadians[i];
double startVisibleRadians =
mInAnimation ? mStartVisibleRadians[1] : mStartVisibleRadians[mCurrentLevel];
double endVisibleRadians =
mInAnimation ? mEndVisibleRadians[1] : mEndVisibleRadians[mCurrentLevel];
if ((!view.isEnabled() && (mCurrentLevel == 0))
|| (radian < (startVisibleRadians - HIGHLIGHT_RADIANS / 2))
|| (radian > (endVisibleRadians + HIGHLIGHT_RADIANS / 2))) {
view.setVisibility(View.GONE);
continue;
}
view.setVisibility(View.VISIBLE);
int x = mCenterX + (int) (mWheelRadius * Math.cos(radian));
int y = mCenterY - (int) (mWheelRadius * Math.sin(radian));
int width = view.getMeasuredWidth();
int height = view.getMeasuredHeight();
if (view == mZoomControl) {
// ZoomControlWheel matches the size of its parent view.
view.layout(0, 0, right - left, bottom - top);
} else {
view.layout(x - width / 2, y - height / 2, x + width / 2, y + height / 2);
}
}
}
