/**
* 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 org.eclipse.draw2d.ConnectionAnchor;
import org.eclipse.draw2d.Graphics;
import org.eclipse.draw2d.MarginBorder;
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.IEntityFigure;
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;
/**
* @author Riccardo Solmi
*/
public class IfControlFigure extends NodeFigure {
public static final int gap = 8;
public IfControlFigure() {
setLayoutManager(new ColumnLayout()
.withMinorAlignment(Alignment.CENTER).withSpacing(8));
initContentPanes(2);
EntityFigure row2 = new EntityFigure(new RowLayout().withSpacing(11));
row2.add(createContentPane(1));
add(createContentPane(0));
add(row2);
setBorder(new MarginBorder(0,0,gap,0));
}
protected ConnectionAnchor[] createAnchors() {
return new ConnectionAnchor[] {
AnchorFactory.createTopOrBottomMiddleAnchor(this)};
}
public IEntityFigure createContentPane(int index) {
if (index == 0)
return contentPanes[0] = new ConditionFigure();
return super.createContentPane(index);
}
public void paintFigure(Graphics g) {
super.paintFigure(g);
Rectangle r = getBounds();
Rectangle rCond = getContentPane(0).getBounds();
Rectangle rTrue = getContentPane(1).getBounds();
Rectangle rFalse = getContentPane(2).getBounds();
int xTrueMid = rTrue.x + rTrue.width/2;
int xFalseMid = rFalse.x + rFalse.width/2;
int xCondRight = rCond.x + rCond.width;
int yCondMid = rCond.y + rCond.height/2;
int yTrueBottom = rTrue.y + rTrue.height;
int yFalseBottom = rFalse.y + rFalse.height;
int yBottom = r.y + r.height-1;
// true branch
g.drawLine(rCond.x, yCondMid, xTrueMid, yCondMid);
g.drawLine(xTrueMid, yCondMid, xTrueMid, rTrue.y);
// false branch
g.drawLine(xCondRight, yCondMid, xFalseMid, yCondMid);
g.drawLine(xFalseMid, yCondMid, xFalseMid, rFalse.y);
// bottom join
g.drawLine(xTrueMid, yTrueBottom, xTrueMid, yBottom);
g.drawLine(xFalseMid, yFalseBottom, xFalseMid, yBottom);
g.drawLine(xTrueMid, yBottom, xFalseMid, yBottom);
// branch labels
g.drawText("T", rCond.x -10, yCondMid -18);
g.drawText("F", xCondRight +7, yCondMid -18);
}
}