PickControlFigure.java example

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/**
 * Copyright 2004-2016 Riccardo Solmi. All rights reserved.
 * This file is part of the Whole Platform.
 *
 * The Whole Platform is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * The Whole Platform is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with the Whole Platform. If not, see <http://www.gnu.org/licenses/>.
 */
package org.whole.lang.ui.notations.flowchart.figures;

import java.util.List;

import org.eclipse.draw2d.AbstractBorder;
import org.eclipse.draw2d.ColorConstants;
import org.eclipse.draw2d.ConnectionAnchor;
import org.eclipse.draw2d.Graphics;
import org.eclipse.draw2d.IFigure;
import org.eclipse.draw2d.geometry.Insets;
import org.eclipse.draw2d.geometry.Rectangle;
import org.whole.lang.ui.figures.AnchorFactory;
import org.whole.lang.ui.figures.EntityFigure;
import org.whole.lang.ui.figures.NodeFigure;
import org.whole.lang.ui.layout.Alignment;
import org.whole.lang.ui.layout.ColumnLayout;
import org.whole.lang.ui.layout.RowLayout;
import org.whole.lang.ui.notations.NotationImages;

/**
 * @author Riccardo Solmi
 */
public class PickControlFigure extends NodeFigure {
	public PickControlFigure() {
		setLayoutManager(new ColumnLayout()
				.withMinorAlignment(Alignment.CENTER).withSpacing(20));
		initContentPanes(1);

		EntityFigure topFigure = new EntityFigure(new RowLayout().withSpacing(11));
		topFigure.addLabel(NotationImages.PICK16);
		topFigure.add(createFoldingToggle(0));

		add(topFigure);
		add(createContentPane(0));
		setBorder(createBorder(true));
	}

	protected ConnectionAnchor[] createAnchors() {
		return new ConnectionAnchor[] {
				AnchorFactory.createTopOrBottomMiddleAnchor(this)};
	}

	protected AbstractBorder createBorder(final boolean isHorizontal) {
		return new AbstractBorder() {
			private /*static*/ final Insets INSETS = new Insets(10,10,20,10);
			public Insets getInsets(IFigure figure) {
				return INSETS;
			}
			public void paint(IFigure figure, Graphics graphics, Insets insets) {
				Rectangle rect = getPaintRectangle(figure, insets).resize(-1, -1);
				graphics.setForegroundColor(ColorConstants.lightGray);
//				graphics.setLineStyle(SWT.LINE_CUSTOM);
//				graphics.setLineDash(new int[] {8,3});
				graphics.drawRoundRectangle(rect,10,10);
			}
		};
	}

	@SuppressWarnings("unchecked")
	public void paintFigure(Graphics g) {
        super.paintFigure(g);
        Rectangle r = getBounds();
        Rectangle rc = getContentPane(0).getBounds();
        List<IFigure> contentPaneChildren = getContentPane(0).getChildren();
        List<IFigure> children = contentPaneChildren.isEmpty() ? contentPaneChildren : contentPaneChildren.get(0).getChildren();

        int inset = 8;
    	int xm = r.x + r.width/2;
        int y0 = rc.y -inset;
    	int y1 = y0;
        if (getContentPane(0).isVisible()) {
            g.drawLine(xm, r.y, xm, y0);

        	y1 = rc.y + rc.height-1 +inset;

            if (children.size() >= 2) {
            	Rectangle r0 = children.get(0).getBounds();
            	Rectangle r1 = children.get(children.size()-1).getBounds();
            	int x0 = r0.x + r0.width/2;
            	int x1 = r1.x + r1.width/2;

                g.drawLine(x0, y0, x1, y0);
                g.drawLine(x0, y1, x1, y1);
            }
            
            for (int i=0; i<children.size(); i++) {
            	Rectangle ri = ((IFigure) children.get(i)).getBounds();
            	int xi = ri.x + ri.width/2;
                int yi = ri.y + ri.height;
            	
                g.drawLine(xi, y0, xi, ri.y);
                g.drawLine(xi, yi, xi, y1);
            }

            g.drawLine(xm, y1, xm, r.y+r.height-1);
        }
	}
}