/**
* 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 = 360 / 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 CircleImageView child = (CircleImageView) getChildAt(i);
if (child.getVisibility() == GONE) {
continue;
}
left =
Math.round(
(float)
(((circleWidth / 2) - childWidth / 2)
+ radius * Math.cos(Math.toRadians(angle))));
top =
Math.round(
(float)
(((circleHeight / 2) - childHeight / 2)
+ radius * Math.sin(Math.toRadians(angle))));
child.setAngle(angle);
if (Math.abs(angle - firstChildPos) < (angleDelay / 2) && selected != child.getPosition()) {
selected = child.getPosition();
if (mOnItemSelectedListener != null && rotateToCenter) {
mOnItemSelectedListener.onItemSelected(child, selected, child.getId(), 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 / 1.5);
childHeight = (int) (radius / 1.5);
float angleDelay = 360 / getChildCount();
for (int i = 0; i < childCount; i++) {
final CircleImageView child = (CircleImageView) 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 / 2) - childWidth / 2)
+ radius * Math.cos(Math.toRadians(angle))));
top =
Math.round(
(float)
(((layoutHeight / 2) - childHeight / 2)
+ radius * Math.sin(Math.toRadians(angle))));
child.layout(left, top, left + childWidth, top + childHeight);
angle += angleDelay;
}
}