1 /*
   2  * Copyright (c) 2008, 2014, Oracle and/or its affiliates.
   3  * All rights reserved. Use is subject to license terms.
   4  *
   5  * This file is available and licensed under the following license:
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  *
  11  *  - Redistributions of source code must retain the above copyright
  12  *    notice, this list of conditions and the following disclaimer.
  13  *  - Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in
  15  *    the documentation and/or other materials provided with the distribution.
  16  *  - Neither the name of Oracle Corporation nor the names of its
  17  *    contributors may be used to endorse or promote products derived
  18  *    from this software without specific prior written permission.
  19  *
  20  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  21  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  22  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  23  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  24  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  25  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  26  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  27  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  28  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  29  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  30  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  31  */
  32 package ensemble.samples.scenegraph.events.multitouch;
  33 
  34 import javafx.event.EventHandler;
  35 import javafx.scene.effect.BlurType;
  36 import javafx.scene.effect.DropShadow;
  37 import javafx.scene.image.Image;
  38 import javafx.scene.image.ImageView;
  39 import javafx.scene.input.MouseEvent;
  40 import javafx.scene.input.RotateEvent;
  41 import javafx.scene.input.ZoomEvent;
  42 import javafx.scene.layout.StackPane;
  43 import javafx.scene.paint.Color;
  44 
  45 public class MultiTouchImageView extends StackPane {
  46 
  47     private ImageView imageView;
  48     private double lastX, lastY, startScale, startRotate;
  49 
  50     public MultiTouchImageView(Image img) {
  51         setEffect(new DropShadow(BlurType.GAUSSIAN, Color.rgb(0, 0, 0, 0.5), 8, 0, 0, 2));
  52 
  53         imageView = new ImageView(img);
  54         imageView.setSmooth(true);
  55         getChildren().add(imageView);
  56 
  57         setOnMousePressed((MouseEvent event) -> {
  58             lastX = event.getX();
  59             lastY = event.getY();
  60             toFront();
  61             //  postView.toFront();
  62         });
  63         setOnMouseDragged((MouseEvent event) -> {
  64             double layoutX = getLayoutX() + (event.getX() - lastX);
  65             double layoutY = getLayoutY() + (event.getY() - lastY);
  66             
  67             if ((layoutX >= 0) && (layoutX <= (getParent().getLayoutBounds().getWidth()))) {
  68                 setLayoutX(layoutX);
  69             }
  70             
  71             if ((layoutY >= 0) && (layoutY <= (getParent().getLayoutBounds().getHeight()))) {
  72                 setLayoutY(layoutY);
  73             }
  74             
  75             if ((getLayoutX() + (event.getX() - lastX) <= 0)) {
  76                 setLayoutX(0);
  77             }
  78         });
  79         addEventHandler(ZoomEvent.ZOOM_STARTED, (ZoomEvent event) -> {
  80             startScale = getScaleX();
  81         });
  82         addEventHandler(ZoomEvent.ZOOM, (ZoomEvent event) -> {
  83             setScaleX(event.getTotalZoomFactor());
  84             setScaleY(event.getTotalZoomFactor());
  85         });
  86         addEventHandler(RotateEvent.ROTATION_STARTED, (RotateEvent event) -> {
  87             startRotate = getRotate();
  88         });
  89         addEventHandler(RotateEvent.ROTATE, (RotateEvent event) -> {
  90             setRotate(event.getTotalAngle());
  91         });
  92 
  93     }
  94 }