@Override
protected void onRestoreInstanceState(Parcelable state) {
Bundle savedState = (Bundle) state;
Parcelable superState = savedState.getParcelable(STATE_PARENT);
super.onRestoreInstanceState(superState);
mAngle = savedState.getFloat(STATE_ANGLE);
setOldCenterColor(savedState.getInt(STATE_OLD_COLOR));
int currentColor = calculateColor(mAngle);
mPointerColor.setColor(currentColor);
setNewCenterColor(currentColor);
}
@Override
public boolean onTouchEvent(MotionEvent event) {
getParent().requestDisallowInterceptTouchEvent(true);
// Convert coordinates to our internal coordinate system
float x = event.getX() - mTranslationOffset;
float y = event.getY() - mTranslationOffset;
switch (event.getAction()) {
case MotionEvent.ACTION_DOWN:
// Check whether the user pressed on the pointer.
float[] pointerPosition = calculatePointerPosition(mAngle);
if (x >= (pointerPosition[0] - mColorPointerHaloRadius)
&& x <= (pointerPosition[0] + mColorPointerHaloRadius)
&& y >= (pointerPosition[1] - mColorPointerHaloRadius)
&& y <= (pointerPosition[1] + mColorPointerHaloRadius)) {
mUserIsMovingPointer = true;
invalidate();
}
// Check whether the user pressed on the center.
else if (x >= -mColorCenterRadius
&& x <= mColorCenterRadius
&& y >= -mColorCenterRadius
&& y <= mColorCenterRadius) {
mCenterHaloPaint.setAlpha(0x50);
setColor(getOldCenterColor());
mCenterNewPaint.setColor(getOldCenterColor());
invalidate();
}
// If user did not press pointer or center, report event not handled
else {
getParent().requestDisallowInterceptTouchEvent(false);
return false;
}
break;
case MotionEvent.ACTION_MOVE:
if (mUserIsMovingPointer) {
mAngle = (float) java.lang.Math.atan2(y, x);
mPointerColor.setColor(calculateColor(mAngle));
setNewCenterColor(mCenterNewColor = calculateColor(mAngle));
if (mOpacityBar != null) {
mOpacityBar.setColor(mColor);
}
if (mValueBar != null) {
mValueBar.setColor(mColor);
}
if (mSaturationBar != null) {
mSaturationBar.setColor(mColor);
}
if (mSVbar != null) {
mSVbar.setColor(mColor);
}
invalidate();
}
// If user did not press pointer or center, report event not handled
else {
getParent().requestDisallowInterceptTouchEvent(false);
return false;
}
break;
case MotionEvent.ACTION_UP:
mUserIsMovingPointer = false;
mCenterHaloPaint.setAlpha(0x00);
invalidate();
break;
}
return true;
}
