--- /dev/null
+/*******************************************************************************\r
+ * Copyright (c) 2007, 2010 Association for Decentralized Information Management\r
+ * in Industry THTH ry.\r
+ * All rights reserved. This program and the accompanying materials\r
+ * are made available under the terms of the Eclipse Public License v1.0\r
+ * which accompanies this distribution, and is available at\r
+ * http://www.eclipse.org/legal/epl-v10.html\r
+ *\r
+ * Contributors:\r
+ * VTT Technical Research Centre of Finland - initial API and implementation\r
+ *******************************************************************************/\r
+package org.simantics.g2d.element.handler.impl;\r
+\r
+import java.awt.geom.AffineTransform;\r
+import java.awt.geom.Point2D;\r
+import java.util.Collection;\r
+\r
+import org.simantics.g2d.canvas.ICanvasContext;\r
+import org.simantics.g2d.diagram.IDiagram;\r
+import org.simantics.g2d.element.ElementHints;\r
+import org.simantics.g2d.element.IElement;\r
+import org.simantics.g2d.element.handler.LifeCycle;\r
+import org.simantics.g2d.element.handler.Move;\r
+import org.simantics.g2d.element.handler.Rotate;\r
+import org.simantics.g2d.element.handler.Scale;\r
+import org.simantics.g2d.element.handler.Transform;\r
+import org.simantics.g2d.element.handler.Validator;\r
+\r
+/**\r
+ * This class implements Transform, Move, Rotate, and Scale.\r
+ * It maintains element position in element variable ElementHints.KEY_TRANSFORM.\r
+ * \r
+ * @author Toni Kalajainen\r
+ */\r
+public class DefaultTransform implements Transform, Move, Rotate, Scale, Validator, LifeCycle {\r
+\r
+ private static final long serialVersionUID = -2394690413166528179L;\r
+\r
+ public static final DefaultTransform INSTANCE = new DefaultTransform(null);\r
+\r
+ Double aspectRatio;\r
+\r
+ public DefaultTransform() {\r
+ this(null);\r
+ }\r
+\r
+ public DefaultTransform(Double aspectRatio) {\r
+ this.aspectRatio = aspectRatio;\r
+ }\r
+\r
+ @Override\r
+ public Double getFixedAspectRatio(IElement e) {\r
+ return aspectRatio;\r
+ }\r
+\r
+ @Override\r
+ public Point2D getScale(IElement e) {\r
+ AffineTransform at = e.getHint(ElementHints.KEY_TRANSFORM);\r
+ return _getScale(at);\r
+ }\r
+\r
+ @Override\r
+ public void setScale(IElement e, Point2D newScale) {\r
+ Point2D oldScale = getScale(e);\r
+ double sx = newScale.getX() / oldScale.getX();\r
+ double sy = newScale.getY() / oldScale.getY();\r
+ AffineTransform at = e.getHint(ElementHints.KEY_TRANSFORM);\r
+ at = new AffineTransform(at);\r
+ at.scale(sx, sy);\r
+ e.setHint(ElementHints.KEY_TRANSFORM, at);\r
+ }\r
+\r
+ @Override\r
+ public Point2D getMaximumScale(IElement e) {\r
+ return null;\r
+ }\r
+\r
+ @Override\r
+ public Point2D getMinimumScale(IElement e) {\r
+ return null;\r
+ }\r
+\r
+ private static Point2D _getScale(AffineTransform at) {\r
+ double m00 = at.getScaleX();\r
+ double m11 = at.getScaleY();\r
+ double m10 = at.getShearY();\r
+ double m01 = at.getShearX();\r
+ // Project unit vector to canvas\r
+ double sx = Math.sqrt(m00 * m00 + m10 * m10);\r
+ double sy = Math.sqrt(m01 * m01 + m11 * m11);\r
+ return new Point2D.Double(sx, sy);\r
+ }\r
+\r
+ @Override\r
+ public void validate(final IElement e, final ICanvasContext ctx, Collection<Issue> lst) {\r
+ /*\r
+ if (aspectRatio != null) {\r
+ // Validate aspect ratio\r
+ final Point2D scale = getScale(e);\r
+ double currentRatio = scale.getX() / scale.getY();\r
+ if (Math.abs(currentRatio - aspectRatio) > 0.000001) {\r
+ lst.add(new Issue() {\r
+ @Override\r
+ public String getMessage() {\r
+ return "Aspect ratio is wrong";\r
+ }\r
+\r
+ @Override\r
+ public void addSuggestions(\r
+ Collection<Suggestion> suggestionList) {\r
+ suggestionList.add(new Suggestion() {\r
+ @Override\r
+ public boolean fix() {\r
+ double newSx = scale.getX();\r
+ double newSy = newSx * aspectRatio;\r
+ Point2D newScale = new Point2D.Double(newSx,\r
+ newSy);\r
+ setScale(e, newScale);\r
+ ctx.setDirty();\r
+ return true;\r
+ }\r
+\r
+ @Override\r
+ public String getMessage() {\r
+ return "Scale height, keep width";\r
+ }\r
+ });\r
+ }\r
+ });\r
+ }\r
+ // TODO min scale validator\r
+ // TODO max scale validator\r
+ }\r
+\r
+ if (e.getHint(ElementHints.KEY_TRANSFORM) == null) {\r
+ Issue i = new Issue() {\r
+ @Override\r
+ public String getMessage() {\r
+ return "Transform is missing";\r
+ }\r
+\r
+ @Override\r
+ public void addSuggestions(Collection<Suggestion> suggestionList) {\r
+ Suggestion s = new Suggestion() {\r
+ @Override\r
+ public boolean fix() {\r
+ e.setHint(ElementHints.KEY_TRANSFORM,\r
+ new AffineTransform());\r
+ return true;\r
+ }\r
+\r
+ @Override\r
+ public String getMessage() {\r
+ return "Set default transform";\r
+ }\r
+ };\r
+ suggestionList.add(s);\r
+ }\r
+ };\r
+ lst.add(i);\r
+ }\r
+ */\r
+ }\r
+\r
+ @Override\r
+ public void rotate(IElement e, double theta, Point2D origo) {\r
+ if (Double.isNaN(theta)) return;\r
+ AffineTransform at = e.getHint(ElementHints.KEY_TRANSFORM);\r
+ at = (AffineTransform) at.clone();\r
+ Point2D localOrigo = at.transform(origo, null);\r
+ at.preConcatenate(AffineTransform.getRotateInstance(theta, localOrigo.getX(), localOrigo.getY()));\r
+ // This code concatenated the matrix from the wrong side\r
+ //at.rotate(theta, origo.getX(), origo.getY());\r
+ e.setHint(ElementHints.KEY_TRANSFORM, at);\r
+ }\r
+\r
+ @Override\r
+ public double getAngle(IElement e) {\r
+ AffineTransform at = e.getHint(ElementHints.KEY_TRANSFORM);\r
+ double m01 = at.getShearX();\r
+ double m11 = at.getScaleY();\r
+ return -Math.atan2(m01, m11);\r
+ }\r
+\r
+ @Override\r
+ public Point2D getPosition(IElement e) {\r
+ AffineTransform at = e.getHint(ElementHints.KEY_TRANSFORM);\r
+ Point2D p = new Point2D.Double(at.getTranslateX(), at.getTranslateY());\r
+ return p;\r
+ }\r
+\r
+ @Override\r
+ public void moveTo(IElement e, double x, double y) {\r
+ AffineTransform origAt = e.getHint(ElementHints.KEY_TRANSFORM);\r
+\r
+ AffineTransform result = new AffineTransform(origAt);\r
+ result.preConcatenate(AffineTransform.getTranslateInstance(x - origAt.getTranslateX(), y - origAt.getTranslateY()));\r
+ e.setHint(ElementHints.KEY_TRANSFORM, result);\r
+ }\r
+\r
+ @Override\r
+ public AffineTransform getTransform(IElement e) {\r
+\r
+ AffineTransform at = e.getHint(ElementHints.KEY_TRANSFORM);\r
+\r
+ IElement parentElement = e.getHint(ElementHints.KEY_PARENT_ELEMENT);\r
+ if(parentElement == null) return at;\r
+\r
+ Transform parentTransform = parentElement.getElementClass().getSingleItem(Transform.class);\r
+ assert(parentTransform!=null);\r
+\r
+ AffineTransform result = (AffineTransform)at.clone();\r
+ AffineTransform parentAT = parentTransform.getTransform(parentElement);\r
+ result.preConcatenate(AffineTransform.getTranslateInstance(parentAT.getTranslateX(), parentAT.getTranslateY()));\r
+\r
+ return result;\r
+\r
+ }\r
+\r
+ @Override\r
+ public void setTransform(IElement e, AffineTransform at) {\r
+ e.setHint(ElementHints.KEY_TRANSFORM, at.clone());\r
+ }\r
+\r
+ @Override\r
+ public void onElementActivated(IDiagram d, IElement e) {\r
+ }\r
+\r
+ @Override\r
+ public void onElementCreated(IElement e) {\r
+ e.setHint(ElementHints.KEY_TRANSFORM, new AffineTransform());\r
+ }\r
+\r
+ @Override\r
+ public void onElementDeactivated(IDiagram d, IElement e) {\r
+ }\r
+\r
+ @Override\r
+ public void onElementDestroyed(IElement e) {\r
+ }\r
+\r
+\r
+}\r
Code Review / simantics / platform.git / blobdiff