public void setContentRect(int width, int height, int paddingLeft, int paddingTop, int paddingRight,
                               int paddingBottom) {
        chartWidth = width;
        chartHeight = height;
        maxContentRect.set(paddingLeft, paddingTop, width - paddingRight, height - paddingBottom);
        contentRectMinusAxesMargins.set(maxContentRect);
        contentRectMinusAllMargins.set(maxContentRect);
    }
Calculates available width and height. Should be called when chart dimensions change. ContentRect is relative to
chart view not the device's screen.
hellocharts-library/src/lecho/lib/hellocharts/computator/ChartComputator.java