--- /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.participant;\r
+\r
+import java.awt.geom.AffineTransform;\r
+import java.awt.geom.Point2D;\r
+\r
+import org.simantics.g2d.canvas.Hints;\r
+import org.simantics.g2d.canvas.impl.AbstractCanvasParticipant;\r
+import org.simantics.g2d.canvas.impl.DependencyReflection.Dependency;\r
+import org.simantics.g2d.participant.CanvasGrab.PointerInfo;\r
+import org.simantics.scenegraph.g2d.events.EventHandlerReflection.EventHandler;\r
+import org.simantics.scenegraph.g2d.events.MouseEvent.MouseButtonPressedEvent;\r
+import org.simantics.scenegraph.g2d.events.MouseEvent.MouseButtonReleasedEvent;\r
+import org.simantics.scenegraph.g2d.events.MouseEvent.MouseExitEvent;\r
+import org.simantics.scenegraph.g2d.events.MouseEvent.MouseMovedEvent;\r
+\r
+/**\r
+ * @author Toni Kalajainen\r
+ */\r
+public class MultitouchPanZoomRotateInteractor extends AbstractCanvasParticipant {\r
+\r
+ @Dependency TransformUtil util;\r
+ @Dependency CanvasGrab grab;\r
+ \r
+ // Pointer grabbing button\r
+ public static final int BUTTON_ID = 1;\r
+ \r
+ @EventHandler(priority = Integer.MAX_VALUE - 2000)\r
+ public boolean handleEvent(MouseButtonPressedEvent e) {\r
+ // ignore normal mouse \r
+ if (getHint(Hints.KEY_TOOL) != Hints.PANTOOL) return false;\r
+ if (e.mouseId==0) return false;\r
+ if (e.button != BUTTON_ID) return false;\r
+ assertDependencies();\r
+ //System.out.println(e.mouseId+" down");\r
+ Point2D controlPos = e.controlPosition;\r
+ Point2D canvasPos = util.controlToCanvas(controlPos, null);\r
+ grab.grabCanvas(e.mouseId, canvasPos); \r
+ return false;\r
+ }\r
+ \r
+ @EventHandler(priority = Integer.MAX_VALUE - 2000)\r
+ public boolean handleEvent(MouseButtonReleasedEvent e) {\r
+ // ignore normal mouse\r
+ if (getHint(Hints.KEY_TOOL) != Hints.PANTOOL) return false;\r
+ if (e.mouseId==0) return false;\r
+ if (e.button != BUTTON_ID) return false;\r
+ assertDependencies();\r
+ //System.out.println(e.mouseId+" up");\r
+ grab.grabInfo.remove(e.mouseId);\r
+ \r
+ return false;\r
+ }\r
+ \r
+ @EventHandler(priority = Integer.MAX_VALUE - 2000)\r
+ public boolean handleEvent(MouseExitEvent e) {\r
+ // ignore normal mouse\r
+ if (getHint(Hints.KEY_TOOL) != Hints.PANTOOL) return false;\r
+ if (e.mouseId==0) return false;\r
+ assertDependencies();\r
+ //System.out.println(e.mouseId+" exit");\r
+ grab.grabInfo.remove(e.mouseId); \r
+ return false;\r
+ } \r
+ \r
+ @EventHandler(priority = Integer.MAX_VALUE - 2000)\r
+ public boolean handleEvent(MouseMovedEvent e) { \r
+ if (e.context instanceof MouseUtil) return false;\r
+ if (getHint(Hints.KEY_TOOL) != Hints.PANTOOL) return false;\r
+ assertDependencies();\r
+ PointerInfo ai = grab.grabInfo.get(e.mouseId);\r
+ if (ai==null) return false;\r
+ if (grab.grabInfo.size() == 1) {\r
+ PointerInfo pi = grab.grabInfo.values().iterator().next(); \r
+\r
+ Point2D pt = util.controlToCanvas(e.controlPosition, null);\r
+ \r
+ double a1_x = pi.anchorPos.getX();\r
+ double a1_y = pi.anchorPos.getY();\r
+ double b1_x = pt.getX();\r
+ double b1_y = pt.getY();\r
+ \r
+ AffineTransform gat = util.getTransform();\r
+ gat.translate(b1_x-a1_x, b1_y-a1_y);\r
+ util.setTransform(gat);\r
+ \r
+ return true; // TODO Do panning;\r
+ } \r
+ if (grab.grabInfo.size()!=2) return false;\r
+ \r
+ double EPSILON = 3;\r
+ \r
+ PointerInfo[] pi = grab.grabInfo.values().toArray(new PointerInfo[2]);\r
+ \r
+ for (PointerInfo p : pi)\r
+ if (p.mouseId == e.mouseId)\r
+ p.currentPos = util.controlToCanvas(e.controlPosition, null);\r
+\r
+ double a1_x = pi[0].anchorPos.getX();\r
+ double a1_y = pi[0].anchorPos.getY();\r
+ double b1_x = pi[0].currentPos.getX();\r
+ double b1_y = pi[0].currentPos.getY();\r
+ \r
+ double a2_x = pi[1].anchorPos.getX();\r
+ double a2_y = pi[1].anchorPos.getY();\r
+ double b2_x = pi[1].currentPos.getX();\r
+ double b2_y = pi[1].currentPos.getY(); \r
+\r
+ for (PointerInfo p : pi)\r
+ if (p.mouseId != e.mouseId)\r
+ p.currentPos = p.anchorPos;\r
+\r
+ double da_x = a1_x - a2_x;\r
+ double da_y = a1_y - a2_y;\r
+ double da_lensq = da_x*da_x + da_y*da_y;\r
+ if(da_lensq < EPSILON) {\r
+ System.err.println("a1 ja a2 ovat liian lähellä toisiaan");\r
+ return false;\r
+ }\r
+\r
+ double db_x = b1_x - b2_x;\r
+ double db_y = b1_y - b2_y;\r
+ \r
+ double s_x = (db_x * da_x + db_y * da_y) / da_lensq;\r
+ double s_y = (-db_x * da_y + db_y * da_x) / da_lensq;\r
+ \r
+ double t_x = b1_x - s_x * a1_x + s_y * a1_y;\r
+ double t_y = b1_y - s_x * a1_y - s_y * a1_x;\r
+ \r
+ double mat[] = new double[] {s_x, s_y, -s_y, s_x, t_x, t_y};\r
+ AffineTransform at = new AffineTransform(mat); \r
+ setDirty();\r
+ \r
+ AffineTransform gat = util.getTransform();\r
+ gat.concatenate(at);\r
+ util.setTransform(gat);\r
+ \r
+ return true;\r
+ }\r
+ \r
+ \r
+}\r
Code Review / simantics / platform.git / blobdiff