/**
* Opens the floating toolbar overflow. This method should not be called if menu items have not
* been laid out with {@link #layoutMenuItems(java.util.List, MenuItem.OnMenuItemClickListener,
* int)}.
*
* @throws IllegalStateException if called when menu items have not been laid out.
*/
private void openOverflow() {
Preconditions.checkState(mMainPanel != null);
Preconditions.checkState(mOverflowPanel != null);
mMainPanel.fadeOut(true);
Size overflowPanelSize = mOverflowPanel.measure();
final int targetWidth = overflowPanelSize.getWidth();
final int targetHeight = overflowPanelSize.getHeight();
final boolean morphUpwards = (mOverflowDirection == OVERFLOW_DIRECTION_UP);
final int startWidth = mContentContainer.getWidth();
final int startHeight = mContentContainer.getHeight();
final float startY = mContentContainer.getY();
final float right = mContentContainer.getX() + mContentContainer.getWidth();
Animation widthAnimation =
new Animation() {
@Override
protected void applyTransformation(float interpolatedTime, Transformation t) {
ViewGroup.LayoutParams params = mContentContainer.getLayoutParams();
int deltaWidth = (int) (interpolatedTime * (targetWidth - startWidth));
params.width = startWidth + deltaWidth;
mContentContainer.setLayoutParams(params);
mContentContainer.setX(right - mContentContainer.getWidth());
}
};
Animation heightAnimation =
new Animation() {
@Override
protected void applyTransformation(float interpolatedTime, Transformation t) {
ViewGroup.LayoutParams params = mContentContainer.getLayoutParams();
int deltaHeight = (int) (interpolatedTime * (targetHeight - startHeight));
params.height = startHeight + deltaHeight;
mContentContainer.setLayoutParams(params);
if (morphUpwards) {
float y = startY - (mContentContainer.getHeight() - startHeight);
mContentContainer.setY(y);
}
}
};
widthAnimation.setDuration(240);
heightAnimation.setDuration(180);
heightAnimation.setStartOffset(60);
mOpenOverflowAnimation.getAnimations().clear();
mOpenOverflowAnimation.setAnimationListener(mOnOverflowOpened);
mOpenOverflowAnimation.addAnimation(widthAnimation);
mOpenOverflowAnimation.addAnimation(heightAnimation);
mContentContainer.startAnimation(mOpenOverflowAnimation);
}
/**
* Returns how big this panel's view should be. This method should only be called when the view
* has not been attached to a parent otherwise it will throw an illegal state.
*/
public Size measure() throws IllegalStateException {
Preconditions.checkState(mContentView.getParent() == null);
mContentView.measure(MeasureSpec.UNSPECIFIED, MeasureSpec.UNSPECIFIED);
return new Size(mContentView.getMeasuredWidth(), mContentView.getMeasuredHeight());
}