private void highlightBubble(Canvas canvas, BubbleValue bubbleValue) {
        float rawRadius = processBubble(bubbleValue, bubbleCenter);
        bubblePaint.setColor(bubbleValue.getDarkenColor());
        drawBubbleShapeAndLabel(canvas, bubbleValue, rawRadius, MODE_HIGHLIGHT);
    }
Removes empty spaces on sides of chart(left-right for landscape, top-bottom for portrait). *This method should be
called after layout had been drawn*. Because most often chart is drawn as rectangle with proportions other than
1:1 and bubbles have to be drawn as circles not ellipses I am unable to calculate correct margins based on chart
data only. I need to know chart dimension to remove extra empty spaces, that bad because viewport depends a
little on contentRectMinusAllMargins.
hellocharts-library/src/lecho/lib/hellocharts/renderer/BubbleChartRenderer.java