source: josm/trunk/src/org/openstreetmap/josm/gui/mappaint/LineElemStyle.java@ 1204

package org.openstreetmap.josm.gui.mappaint;

import java.awt.Color;
import java.util.Collection;

public class LineElemStyle extends ElemStyle implements Comparable<LineElemStyle>
{
    public int width;
    public int realWidth; //the real width of this line in meter
    public Color color;
    public boolean dashed;

    public boolean over;
    public enum WidthMode { ABSOLUTE, PERCENT, OFFSET }
    public WidthMode widthMode;

    public Collection<LineElemStyle> overlays;

    public LineElemStyle(LineElemStyle s, long maxScale, long minScale) {
        this.width = s.width;
        this.realWidth = s.realWidth;
        this.color = s.color;
        this.dashed = s.dashed;
        this.over = s.over;
        this.widthMode = s.widthMode;

        this.priority = s.priority;
        this.maxScale = maxScale;
        this.minScale = minScale;
    }

    public LineElemStyle(LineElemStyle s, Collection<LineElemStyle> overlays) {
        this.width = s.width;
        this.realWidth = s.realWidth;
        this.color = s.color;
        this.dashed = s.dashed;
        this.over = s.over;
        this.widthMode = s.widthMode;

        this.priority = s.priority;
        this.maxScale = s.maxScale;
        this.minScale = s.minScale;

        this.overlays = overlays;
        this.code = s.code;
        for (LineElemStyle o : overlays)
            this.code += o.code;
    }

    public LineElemStyle() { init(); }

    public void init()
    {
        width = 1;
        realWidth = 0;
        dashed = false;
        priority = 0;
        color = null;
        over = true; // only used for line modifications
        widthMode = WidthMode.ABSOLUTE;
        overlays = null;
    }

    // get width for overlays
    public int getWidth(int ref)
    {
        int res;
        if(widthMode == WidthMode.ABSOLUTE)
            res = width;
        else if(widthMode == WidthMode.OFFSET)
            res = ref + width;
        else
        {
            if(width < 0)
                res = 0;
            else
                res = ref*width/100;
        }
        return res <= 0 ? 1 : res;
    }

    public int compareTo(LineElemStyle s)
    {
        if(s.priority != priority)
            return s.priority > priority ? 1 : -1;
        if(!over && s.over)
            return -1;
        // we have no idea how to order other objects :-)
        return 0;
    }
}