Java 类org.eclipse.draw2d.Polygon 实例源码

/**
 * createContents
 *   void
 */
private void createContents() {

    setLayoutManager(new CombinedFragmentLayout());
    setBorder(new LineBorder(0));
    setFill(false);
    setXOR(false);

    fragmentBoundary = new Polygon();
    fragmentBoundary.setFill(true);
    fragmentBoundary.setBackgroundColor(UiCorePlugin.getDefault().getColor(IConstantColorRegistry.LightGray));
    this.add(fragmentBoundary);

    fragmentLabel = new Label("None");
    this.add(fragmentLabel);

}

@Override
public void setConstraint(IFigure child, Object constraint) {
    if(constraint.equals(SCALE))
        scale = (RoundScale)child;
    else if (constraint.equals(RAMP))
        ramp = (RoundScaledRamp) child;
    else if (constraint.equals(NEEDLE))
        needle = (Polygon) child;
    else if (constraint.equals(VALUE_LABEL))
        valueLabel = (Label)child;
}

@Override
protected void customizeFigure() {
    diamond = new Polygon();
    diamond.setLineWidth(1);
    add(diamond, 0);
    setSize(50, 50);
    diamond.setPoints(calculatePointList());
}

private Polygon getPolygon( Object model )
{
    Polygon polygon = new Polygon( );
    int x = getPosX( model );
    int y = getPosY( model );
    int width = getWidth( model );
    int height = getHeight( model );
    polygon.addPoint( new Point( x - 50, y - 50 ) );
    polygon.addPoint( new Point( x + width + 50, y - 50 ) );
    polygon.addPoint( new Point( x + width + 50, y + height + 50 ) );
    polygon.addPoint( new Point( x - 50, y + height + 50 ) );
    return polygon;
}

@Override
public void setConstraint(IFigure child, Object constraint) {
    if(constraint.equals(SCALE))
        scale = (RoundScale)child;
    else if (constraint.equals(RAMP))
        ramp = (RoundScaledRamp) child;
    else if (constraint.equals(NEEDLE))
        needle = (Polygon) child;
    else if (constraint.equals(VALUE_LABEL))
        valueLabel = (Label)child;
}

protected void refreshVisuals( )
{
    Rectangle r;
    if ( !UIHelper.existIntProperty( ( (ReportElementHandle) getModel( ) ).getRoot( ),
            UIHelper.getId( getModel( ), cube ),
            BuilderConstants.POSITION_X ) )
    {
        int displayWidth = 500 - 40;
        int displayHeight = 400 - 20;

        List childList = new ArrayList( );
        if ( getCube( ) != null )
        {
            childList.add( getCube( ).getDataSet( ) );
            DimensionHandle[] dimensions = (DimensionHandle[]) getCube( ).getContents( ICubeModel.DIMENSIONS_PROP )
                    .toArray( new DimensionHandle[0] );
            for ( int i = 0; i < dimensions.length; i++ )
            {
                TabularHierarchyHandle hierarchy = (TabularHierarchyHandle) dimensions[i].getDefaultHierarchy( );
                if ( hierarchy != null && hierarchy.getDataSet( ) != null )
                    childList.add( hierarchy );
            }
        }

        List polygonList = new ArrayList( );
        for ( int i = 0; i < childList.size( ); i++ )
        {
            if ( existPosX( childList.get( i ) ) )
                polygonList.add( getPolygon( childList.get( i ) ) );
        }

        int width = getWidth( getModel( ) );
        int height = getHeight( getModel( ) );

        boolean contain = false;
        int x = 0, y = 0;
        for ( int i = 0; i < 100; i++ )
        {
            x = new Random( ).nextInt( displayWidth - width );
            y = new Random( ).nextInt( displayHeight - height );
            for ( int j = 0; j < polygonList.size( ); j++ )
            {
                contain = true;
                Polygon polygon = (Polygon) polygonList.get( j );
                if ( polygon.containsPoint( x, y ) )
                    break;
                if ( polygon.containsPoint( x + width, y ) )
                    break;
                if ( polygon.containsPoint( x + width, y + height ) )
                    break;
                if ( polygon.containsPoint( x, y + height ) )
                    break;
                contain = false;
            }
            if ( !contain )
            {
                break;
            }
        }
        polygonList.clear( );
        childList.clear( );
        if ( !contain )
            r = new Rectangle( setPosX( x ), setPosY( y ), width, height );
        else
            r = new Rectangle( getPosX( getModel( ) ),
                    getPosY( getModel( ) ),
                    getWidth( getModel( ) ),
                    getHeight( getModel( ) ) );
    }
    else
        r = new Rectangle( getPosX( getModel( ) ),
                getPosY( getModel( ) ),
                getWidth( getModel( ) ),
                getHeight( getModel( ) ) );
    getFigure( ).setBounds( r );
    ( (GraphicalEditPart) getParent( ) ).setLayoutConstraint( this,
            getFigure( ),
            r );

}