@Override
public void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
super.onMeasure(widthMeasureSpec, heightMeasureSpec);
if (mTarget == null) {
ensureTarget();
}
if (mTarget == null) {
return;
}
mTarget.measure(
MeasureSpec.makeMeasureSpec(
getMeasuredWidth() - getPaddingLeft() - getPaddingRight(), MeasureSpec.EXACTLY),
MeasureSpec.makeMeasureSpec(
getMeasuredHeight() - getPaddingTop() - getPaddingBottom(), MeasureSpec.EXACTLY));
mCircleView.measure(
MeasureSpec.makeMeasureSpec(mCircleWidth, MeasureSpec.EXACTLY),
MeasureSpec.makeMeasureSpec(mCircleHeight, MeasureSpec.EXACTLY));
if (!mUsingCustomStart && !mOriginalOffsetCalculated) {
mOriginalOffsetCalculated = true;
mCurrentTargetOffsetTop = mOriginalOffsetTop = -mCircleView.getMeasuredHeight();
}
mCircleViewIndex = -1;
// Get the index of the circleview.
for (int index = 0; index < getChildCount(); index++) {
if (getChildAt(index) == mCircleView) {
mCircleViewIndex = index;
break;
}
}
}
@Override
protected void onLayout(boolean changed, int left, int top, int right, int bottom) {
final int width = getMeasuredWidth();
final int height = getMeasuredHeight();
if (getChildCount() == 0) {
return;
}
if (mTarget == null) {
ensureTarget();
}
if (mTarget == null) {
return;
}
final View child = mTarget;
final int childLeft = getPaddingLeft();
final int childTop = getPaddingTop();
final int childWidth = width - getPaddingLeft() - getPaddingRight();
final int childHeight = height - getPaddingTop() - getPaddingBottom();
child.layout(childLeft, childTop, childLeft + childWidth, childTop + childHeight);
int circleWidth = mCircleView.getMeasuredWidth();
int circleHeight = mCircleView.getMeasuredHeight();
mCircleView.layout(
(width / 2 - circleWidth / 2),
mCurrentTargetOffsetTop,
(width / 2 + circleWidth / 2),
mCurrentTargetOffsetTop + circleHeight);
}
/**
* Get the diameter of the progress circle that is displayed as part of the swipe to refresh
* layout. This is not valid until a measure pass has completed.
*
* @return Diameter in pixels of the progress circle view.
*/
public int getProgressCircleDiameter() {
return mCircleView != null ? mCircleView.getMeasuredHeight() : 0;
}