final void updateTextPositions(int paramInt, float paramFloat, boolean paramBoolean) {
Rect localRect = mTempRect;
int i = getHeight();
int j = mCurrText.getLeft();
int k = mTabPadding;
int m = mCurrText.getRight();
int n = mTabPadding;
int i1 = i - mIndicatorHeight;
localRect.set(j - k, i1, m + n, i);
super.updateTextPositions(paramInt, paramFloat, paramBoolean);
mTabAlpha = ((int) (Math.abs(paramFloat - 0.5F) * 2.0F * 255.0F));
localRect.union(mCurrText.getLeft() - mTabPadding, i1, mCurrText.getRight() + mTabPadding, i);
invalidate(localRect);
}
@Override
void updateTextPositions(int position, float positionOffset, boolean force) {
final Rect r = mTempRect;
int bottom = getHeight();
int left = mCurrText.getLeft() - mTabPadding;
int right = mCurrText.getRight() + mTabPadding;
int top = bottom - mIndicatorHeight;
r.set(left, top, right, bottom);
super.updateTextPositions(position, positionOffset, force);
mTabAlpha = (int) (Math.abs(positionOffset - 0.5f) * 2 * 0xFF);
left = mCurrText.getLeft() - mTabPadding;
right = mCurrText.getRight() + mTabPadding;
r.union(left, top, right, bottom);
invalidate(r);
}
void updateText(int currentItem, PagerAdapter adapter) {
final int itemCount = adapter != null ? adapter.getCount() : 0;
mUpdatingText = true;
CharSequence text = null;
if (currentItem >= 1 && adapter != null) {
text = adapter.getPageTitle(currentItem - 1);
}
mPrevText.setText(text);
mCurrText.setText(adapter != null ? adapter.getPageTitle(currentItem) : null);
text = null;
if (currentItem + 1 < itemCount && adapter != null) {
text = adapter.getPageTitle(currentItem + 1);
}
mNextText.setText(text);
// Measure everything
final int width = getWidth() - getPaddingLeft() - getPaddingRight();
final int childHeight = getHeight() - getPaddingTop() - getPaddingBottom();
final int childWidthSpec =
MeasureSpec.makeMeasureSpec((int) (width * 0.8f), MeasureSpec.AT_MOST);
final int childHeightSpec = MeasureSpec.makeMeasureSpec(childHeight, MeasureSpec.EXACTLY);
mPrevText.measure(childWidthSpec, childHeightSpec);
mCurrText.measure(childWidthSpec, childHeightSpec);
mNextText.measure(childWidthSpec, childHeightSpec);
mLastKnownCurrentPage = currentItem;
if (!mUpdatingPositions) {
updateTextPositions(currentItem, mLastKnownPositionOffset);
}
mUpdatingText = false;
}
@Override
protected void onLayout(boolean changed, int l, int t, int r, int b) {
if (mPager != null) {
updateTextPositions(mPager.getCurrentItem(), 0.f);
}
}