Class TextSelection

CodenameOne/src/com/codename1/ui/TextSelection.java:60–1517

/// @author shannah
///
public class TextSelection {

    /// Comparator used for ordering components in left-to-right mode.
    private static final Comparator<Component> LTRComparator = new Comparator<Component>() {

        /// We can't just use component's AbsoluteY coordinates for ordering because of scrolling,
        /// so we create a scaled coorindate that will order components properly.
        ///
        /// #### Parameters
        ///
        /// - `cmp`: the component
        ///
        /// #### Returns
        ///
        /// the Y scale
        private double getScaledY(Component cmp) {
            double y = 0;
            while (cmp != null) {
                double ratio = cmp.getHeight() / (double) Math.max(cmp.getScrollDimension().getHeight(), cmp.getHeight());
                y = ratio * y;
                y += cmp.getY() + cmp.getScrollY();
                cmp = cmp.getParent();
            }
            return y;
        }

        @Override
        public int compare(Component o1, Component o2) {
            int x1 = o1.getAbsoluteX();
            int x2 = o2.getAbsoluteX();
            double y1 = getScaledY(o1);
            double y2 = getScaledY(o2);

            int compareY = Double.compare(y1, y2);
            if (compareY != 0) {
                return compareY;
            }
            if (x1 < x2) {
                return -1;
            } else if (x1 > x2) {
                return 1;
            }
            int w1 = o1.getWidth();
            int w2 = o2.getWidth();
            int h1 = o1.getHeight();
            int h2 = o2.getHeight();

            if (h1 != h2) {
                return h1 > h2 ? -1 : 1;
            }
            if (w1 != w2) {
                return w1 > w2 ? -1 : 1;
            }
            return 0;
        }

    };
    /// Comparator used for ordering components in left-to-right mode.