Author: koen.aers(a)jboss.com Date: 2008-11-25 15:44:40 -0500 (Tue, 25 Nov 2008) New Revision: 12048 Added: trunk/flow/plugins/org.jboss.tools.flow.common/src/org/jboss/tools/flow/common/figure/DiamondAnchor.java trunk/flow/plugins/org.jboss.tools.flow.common/src/org/jboss/tools/flow/common/figure/DiamondElementFigure.java Log: Support for diamond shaped figures Added: trunk/flow/plugins/org.jboss.tools.flow.common/src/org/jboss/tools/flow/common/figure/DiamondAnchor.java =================================================================== --- trunk/flow/plugins/org.jboss.tools.flow.common/src/org/jboss/tools/flow/common/figure/DiamondAnchor.java (rev 0) +++ trunk/flow/plugins/org.jboss.tools.flow.common/src/org/jboss/tools/flow/common/figure/DiamondAnchor.java 2008-11-25 20:44:40 UTC (rev 12048) @@ -0,0 +1,47 @@ +package org.jboss.tools.flow.common.figure; + +import org.eclipse.draw2d.AbstractConnectionAnchor; +import org.eclipse.draw2d.IFigure; +import org.eclipse.draw2d.geometry.Point; +import org.eclipse.draw2d.geometry.Rectangle; + +public class DiamondAnchor extends AbstractConnectionAnchor { + + public DiamondAnchor(IFigure owner) { + super(owner); + } + + public Point getLocation(Point reference) { + Rectangle r = Rectangle.SINGLETON; + r.setBounds(getOwner().getBounds()); + r.translate(-1, -1); + r.resize(1, 1); + getOwner().translateToAbsolute(r); + + Point ref = r.getCenter().negate().translate(reference); + + float centerX = r.x + 0.5f * r.width; + float centerY = r.y + 0.5f * r.height; + float dx, dy; + + if (Math.abs(ref.x * r.height) == Math.abs(Math.abs(ref.y)* r.width )) { + dx = ref.x > 0 ? r.width / 4 : - r.width / 4; + dy = ref.y > 0 ? r.height / 4 : - r.height / 4; + } else if (ref.x == 0) { + dx = 0; + dy = ref.y > 0 ? r.height / 2 : - r.height / 2; + } else { + + float numerator = ref.x * r.height * r.width / 2; + float firstDenominator = Math.abs(ref.y) * r.width + ref.x * r.height; + float secondDenominator = Math.abs(ref.y) * r.width - ref.x * r.height; + + dx = (ref.x > 0) ? numerator / firstDenominator : numerator / secondDenominator; + dy = dx * ref.y / ref.x; + + } + + return new Point(Math.round(centerX + dx), Math.round(centerY + dy)); + } + +} \ No newline at end of file Added: trunk/flow/plugins/org.jboss.tools.flow.common/src/org/jboss/tools/flow/common/figure/DiamondElementFigure.java =================================================================== --- trunk/flow/plugins/org.jboss.tools.flow.common/src/org/jboss/tools/flow/common/figure/DiamondElementFigure.java (rev 0) +++ trunk/flow/plugins/org.jboss.tools.flow.common/src/org/jboss/tools/flow/common/figure/DiamondElementFigure.java 2008-11-25 20:44:40 UTC (rev 12048) @@ -0,0 +1,44 @@ +package org.jboss.tools.flow.common.figure; + +import org.eclipse.draw2d.ConnectionAnchor; +import org.eclipse.draw2d.Polygon; +import org.eclipse.draw2d.geometry.PointList; +import org.eclipse.draw2d.geometry.Rectangle; + +public class DiamondElementFigure extends AbstractElementFigure { + + protected Polygon diamond; + + @Override + protected void customizeFigure() { + diamond = new Polygon(); + diamond.setLineWidth(1); + add(diamond, 0); + setSize(50, 50); + diamond.setPoints(calculatePointList()); + } + + public void setBounds(Rectangle rectangle) { + super.setBounds(rectangle); + diamond.setPoints(calculatePointList()); + } + + private PointList calculatePointList() { + PointList result = new PointList(); + Rectangle bounds = getBounds(); + result.addPoint(bounds.x + bounds.width / 2 - diamond.getLineWidth() / 4, bounds.y + diamond.getLineWidth() / 2); + result.addPoint(bounds.x + bounds.width - diamond.getLineWidth(), bounds.y + bounds.height / 2 - diamond.getLineWidth() / 4); + result.addPoint(bounds.x + bounds.width / 2 - diamond.getLineWidth() / 4, bounds.y + bounds.height - diamond.getLineWidth()); + result.addPoint(bounds.x + diamond.getLineWidth() / 2, bounds.y + bounds.height / 2 - diamond.getLineWidth() / 4); + return result; + } + + public ConnectionAnchor getSourceConnectionAnchor() { + return new DiamondAnchor(this); + } + + public ConnectionAnchor getTargetConnectionAnchor() { + return new DiamondAnchor(this); + } + +}