/**
* 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.IEntityFigure;
import org.whole.lang.ui.figures.NodeFigure;
import org.whole.lang.ui.layout.Alignment;
import org.whole.lang.ui.layout.ColumnLayout;
/**
* @author Riccardo Solmi
*/
public class WhileControlFigure extends NodeFigure {
public static final int gap = 8;
public WhileControlFigure() {
initContentPanes(2);
setLayoutManager(new ColumnLayout().withMinorAlignment(Alignment.CENTER).withSpacing(4));
add(createContentPane(0));
add(createContentPane(1));
setBorder(new MarginBorder(gap,gap*2,gap*2,gap*2));
}
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();
int xMid = rTrue.x + rTrue.width/2;
int yCondMid = rCond.y + rCond.height/2;
int xCondRight = rCond.x + rCond.width;
int xLoopLine = Math.min(rCond.x, rTrue.x) -gap;
int xFalseLine = Math.max(xCondRight, rTrue.x + rTrue.width) +gap;
int yCondBottom = rCond.y + rCond.height-1;
int yTrueBottom = rTrue.y + rTrue.height;
int yLoopSource = yTrueBottom +gap;
int yLoopTarget = r.y;
int yFalseTarget = r.y+r.height-1;
//top line
g.drawLine(xMid, r.y, xMid, rCond.y);
//true line
g.drawLine(xMid, yCondBottom, xMid, rTrue.y);
g.drawLine(xMid, yTrueBottom, xMid, yLoopSource);
//loop line
g.drawLine(xMid, yLoopSource, xLoopLine, yLoopSource);
g.drawLine(xLoopLine, yLoopSource, xLoopLine, yLoopTarget);
g.drawLine(xLoopLine, yLoopTarget, xMid, yLoopTarget);
//false line
g.drawLine(xCondRight, yCondMid, xFalseLine, yCondMid);
g.drawLine(xFalseLine, yCondMid, xFalseLine, yFalseTarget);
g.drawLine(xFalseLine, yFalseTarget, xMid, yFalseTarget);
// branch labels
g.drawText("F", xCondRight +7, yCondMid -18);
}
}