/**
* Rotates the given view to the center of the menu.
*
* @param view the view to be rotated to the center
* @param fromRunnable if the method is called from the runnable which animates the rotation then
* it should be true, otherwise false
*/
private void rotateViewToCenter(ShareArImageView view, boolean fromRunnable) {
if (view == null) return;
if (rotateToCenter) {
float velocityTemp = 1;
float destAngle = (float) (firstChildPos - view.getAngle());
float startAngle = 0;
int reverser = 1;
if (destAngle < 0) {
destAngle += 360;
}
if (destAngle > 180) {
reverser = -1;
destAngle = 360 - destAngle;
}
while (startAngle < destAngle) {
startAngle += velocityTemp / 75f;
velocityTemp *= 1.0666f;
}
ShareArLayout.this.post(new FlingRunnable(reverser * velocityTemp, !fromRunnable));
}
}
/**
* Rotate the buttons.
*
* @param degrees The degrees, the menu items should get rotated.
*/
private void rotateButtons(float degrees) {
int left, top, childCount = getChildCount();
float angleDelay = 360f / (float) childCount;
angle += degrees;
if (angle > 360) {
angle -= 360;
} else {
if (angle < 0) {
angle += 360;
}
}
for (int i = 0; i < childCount; i++) {
if (angle > 360) {
angle -= 360;
} else {
if (angle < 0) {
angle += 360;
}
}
final ShareArImageView child = (ShareArImageView) getChildAt(i);
if (child.getVisibility() == GONE) {
continue;
}
left =
Math.round(
(float)
(((sharearWidth / 2f) - childWidth / 2f)
+ radius * Math.cos(Math.toRadians(angle))));
top =
Math.round(
(float)
(((sharearHeight / 2f) - childHeight / 2f)
+ radius * Math.sin(Math.toRadians(angle))));
child.setAngle(angle);
if (Math.abs(angle - firstChildPos) < (angleDelay / 2f) && selected != child.getPosition()) {
selected = child.getPosition();
if (mOnItemSelectedListener != null && rotateToCenter) {
mOnItemSelectedListener.onItemSelected(
child, selected, child.getId(), child.getRid(), child.getName());
}
}
child.layout(left, top, left + childWidth, top + childHeight);
angle += angleDelay;
}
}
@Override
protected void onLayout(boolean changed, int l, int t, int r, int b) {
int layoutWidth = r - l;
int layoutHeight = b - t;
// Laying out the child views
final int childCount = getChildCount();
int left, top;
radius = (layoutWidth <= layoutHeight) ? layoutWidth / 3 : layoutHeight / 3;
childWidth = (int) (radius / 1.5f);
childHeight = (int) (radius / 1.5f);
float angleDelay = 360 / (float) getChildCount();
for (int i = 0; i < childCount; i++) {
final ShareArImageView child = (ShareArImageView) getChildAt(i);
if (child.getVisibility() == GONE) {
continue;
}
if (angle > 360) {
angle -= 360;
} else {
if (angle < 0) {
angle += 360;
}
}
child.setAngle(angle);
child.setPosition(i);
left =
Math.round(
(float)
(((layoutWidth / 2f) - childWidth / 2f)
+ radius * Math.cos(Math.toRadians(angle))));
top =
Math.round(
(float)
(((layoutHeight / 2f) - childHeight / 2f)
+ radius * Math.sin(Math.toRadians(angle))));
child.layout(left, top, left + childWidth, top + childHeight);
angle += angleDelay;
}
}
@Override
public boolean onSingleTapUp(MotionEvent e) {
if (getChildCount() == 0) return false;
mTappedViewsPostition = pointToPosition(e.getX(), e.getY());
if (mTappedViewsPostition >= 0) {
mTappedView = getChildAt(mTappedViewsPostition);
mTappedView.setPressed(true);
} else {
float centerX = sharearWidth / 2f;
float centerY = sharearHeight / 2f;
if (e.getX() < centerX + (childWidth / 2f)
&& e.getX() > centerX - childWidth / 2f
&& e.getY() < centerY + (childHeight / 2f)
&& e.getY() > centerY - (childHeight / 2f)) {
if (mOnCenterClickListener != null) {
mOnCenterClickListener.onCenterClick();
return true;
}
}
}
if (mTappedView != null) {
ShareArImageView view = (ShareArImageView) (mTappedView);
if (selected != mTappedViewsPostition) {
rotateViewToCenter(view, false);
if (!rotateToCenter) {
if (mOnItemSelectedListener != null) {
mOnItemSelectedListener.onItemSelected(
mTappedView,
mTappedViewsPostition,
mTappedView.getId(),
view.getRid(),
view.getName());
}
if (mOnItemClickListener != null) {
mOnItemClickListener.onItemClick(
mTappedView,
mTappedViewsPostition,
mTappedView.getId(),
view.getRid(),
view.getName());
}
}
} else {
rotateViewToCenter(view, false);
if (mOnItemClickListener != null) {
mOnItemClickListener.onItemClick(
mTappedView,
mTappedViewsPostition,
mTappedView.getId(),
view.getRid(),
view.getName());
}
}
return true;
}
return super.onSingleTapUp(e);
}