Nachos-AdjustFontMetrics.java

private void adjustFontMetrics(FontMetricsInt fm) {
    paint.getFontMetricsInt(fm);
    int textHeight = fm.descent - fm.ascent;
    // Break up the vertical spacing in half because half will go above the chip, half will go below the chip
    int halfSpacing = mChipVerticalSpacing / 2;

    // Given that the text is centered vertically within the chip, the amount of space above or below the text (inbetween the text and chip)
    // is half their difference in height:
    int spaceBetweenChipAndText = (mChipHeight - textHeight) / 2;

    int textTop = fm.top;
    int chipTop = fm.top - spaceBetweenChipAndText;

    int textBottom = fm.bottom;
    int chipBottom = fm.bottom + spaceBetweenChipAndText;

    // The text may have been taller to begin with so we take the most negative coordinate (highest up) to be the top of the content
    int topOfContent = Math.min(textTop, chipTop);
    // Same as above but we want the largest positive coordinate (lowest down) to be the bottom of the content
    int bottomOfContent = Math.max(textBottom, chipBottom);

    // Shift the top up by halfSpacing and the bottom down by halfSpacing
    int topOfContentWithSpacing = topOfContent - halfSpacing;
    int bottomOfContentWithSpacing = bottomOfContent + halfSpacing;

    // Change the font metrics so that the TextView thinks the font takes up the vertical space of a chip + spacing
    fm.ascent = topOfContentWithSpacing;
    fm.descent = bottomOfContentWithSpacing;
    fm.top = topOfContentWithSpacing;
    fm.bottom = bottomOfContentWithSpacing;
}