Examples of com.bbn.openmap.omGraphics.OMColor

com.bbn.openmap.omGraphics.OMColor

The OMColor exists to provide a way to make a color that can have some degree of transparency. The class lets you set the alpha value of the color which lets the color be invisible (0) to opaque (255). At this time, the java.awt.Graphics class does not support transparency for drawing objects (OMLines, OMRects, OMCircles, etc.) but the transparent colors work for OMBitmap and OMRaster pixel values.

The OMColor object captures all calls that reference the package-internal java.awt.Color.value slot, and re-route them through the local argb slot.

NOTE concerning the OpenMap 4.0 release. As of 4.0, OpenMap now has a minimum jdk 1.2 requirement, which means that OMColor seems to duplicate java.awt.Color. We're going to keep this class around, however, in case someone needs a mutable Color. @see com.bbn.openmap.util.ColorFactory

     *        java.awt.Color supports it
     * @return Color or OMColor that has an ARGB value
     */
    public static Color createColor(int value, boolean forceAlpha) {
        if (!OMColor.nativeAlpha) {
            return (forceAlpha) ? new OMColor(value) : new Color(value);
        }
        // alpha is supported by the Java VM.
        try {
            // we prefer the generic Java 2 solution (supports alpha)
            return (Color) OMColor.alphaValueConstructor.newInstance(new Object[] {
                    new Integer(value), new Boolean(true) });
        } catch (Exception e) {
            System.err.println("ColorFactory.parseColor(): internal error...");
            return (forceAlpha) ? new OMColor(value) : new Color(value);
        }
    }

            RpfIndexedImageData riid = new RpfIndexedImageData();
            riid.imageData = ri.imagedata;
            riid.colortable = new OMColor[ri.colortable.length];


            for (int i = 0; i < riid.colortable.length; i++) {
                riid.colortable[i] = new OMColor(ri.colortable[i]);
            }
            return riid;


        } catch (org.omg.CORBA.SystemException e) {
            handleCORBAError(e);

Examples of com.bbn.openmap.omGraphics.OMColor

Related Classes of com.bbn.openmap.omGraphics.OMColor