private void init() {
Resources res = getContext().getResources();
mHandler = new Handler();
mDelayedCancel =
new Runnable() {
@Override
public void run() {
cancelCircle(false);
}
};
mAnimationOut = new CircleViewAnimation(this, 0, 0);
mAnimationOut.setInterpolator(new AccelerateDecelerateInterpolator());
mAnimationOut.setDuration(res.getInteger(android.R.integer.config_mediumAnimTime));
mPaint = new Paint();
mPaint.setAntiAlias(true);
mPaint.setColor(Color.WHITE);
mPaint.setStrokeWidth(2);
mRadiusTarget = res.getDimension(R.dimen.circle_radius_target);
mRadiusDecreaseThreshold = res.getDimension(R.dimen.circle_radius_decrease_threshold);
mDrawable = res.getDrawable(R.drawable.ic_unlock);
mDrawable.setBounds(0, 0, mDrawable.getIntrinsicWidth(), mDrawable.getIntrinsicHeight());
setRadius(0);
}
public boolean onTouchEvent2(MotionEvent event) {
// Cancel current circle on two-fingers touch (or more.)
if (event.getPointerCount() > 1) {
cancelCircle(false);
return false;
}
// If current circle is canceled then
// ignore all actions except of touch down (to reset state.)
if (mCanceled && event.getActionMasked() != MotionEvent.ACTION_DOWN) return false;
final float x = event.getX();
final float y = event.getY();
switch (event.getActionMasked()) {
case MotionEvent.ACTION_DOWN:
clearAnimation();
// Initialize circle
mRadiusMax = 0;
mPoint[0] = x;
mPoint[1] = y;
mCanceled = false;
mHandler.removeCallbacks(mDelayedCancel);
mHandler.postDelayed(mDelayedCancel, 1000);
mCallback.onCircleEvent(mRadius, calculateRatio(), ACTION_START);
case MotionEvent.ACTION_MOVE:
setRadius((float) Math.hypot(x - mPoint[0], y - mPoint[1]));
// Cancel the circle if it's decreasing.
if (mRadiusMax - mRadius > mRadiusDecreaseThreshold) {
mRadiusAimed = false;
cancelCircle(false);
break;
}
if (calculateRatio() == 1) {
if (!mRadiusAimed) {
mRadiusAimed = true;
performHapticFeedback(HapticFeedbackConstants.VIRTUAL_KEY);
}
} else if (mRadiusAimed) {
mRadiusAimed = false;
performHapticFeedback(HapticFeedbackConstants.VIRTUAL_KEY);
}
break;
case MotionEvent.ACTION_UP:
if (mRadiusAimed) {
mCallback.onCircleEvent(mRadius, calculateRatio(), ACTION_UNLOCK);
}
case MotionEvent.ACTION_CANCEL:
mHandler.removeCallbacks(mDelayedCancel);
cancelCircle(mRadiusAimed);
break;
default:
return super.onTouchEvent(event);
}
return false;
}
@Override
protected void applyTransformation(float interpolatedTime, Transformation t) {
super.applyTransformation(interpolatedTime, t);
float value = (from + (to - from) * interpolatedTime);
if (mChangeDrawnRadius) {
mCircleView.setRadiusDrawn(value);
} else {
mCircleView.setRadius(value);
}
}
public void setRadiusTarget(float radiusTarget) {
mRadiusTarget = radiusTarget;
setRadius(mRadius);
}