tmf/org.eclipse.tracecompass.tmf.ui/src/org/eclipse/tracecompass/internal/provisional/tmf/ui/views/timegraph2/swtjfx/examples/ExampleMouseDrag.java

   1 package org.eclipse.tracecompass.internal.provisional.tmf.ui.views.timegraph2.swtjfx.examples;
   2
   3 import org.eclipse.jdt.annotation.Nullable;
   4
   5 import javafx.application.Application;
   6 import javafx.event.EventHandler;
   7 import javafx.scene.Cursor;
   8 import javafx.scene.Group;
   9 import javafx.scene.Scene;
  10 import javafx.scene.input.MouseEvent;
  11 import javafx.scene.paint.Color;
  12 import javafx.scene.shape.Circle;
  13 import javafx.stage.Stage;
  14
  15 /**
  16  * @web http://java-buddy.blogspot.com/
  17  */
  18 public class ExampleMouseDrag extends Application {
  19
  20     private double orgSceneX, orgSceneY;
  21     private double orgTranslateX, orgTranslateY;
  22
  23     @Override
  24     public void start(@Nullable Stage primaryStage) {
  25         if (primaryStage == null) {
  26             return;
  27         }
  28
  29         //Create Circles
  30         Circle circleRed = new Circle(50.0, Color.RED);
  31         circleRed.setCursor(Cursor.HAND);
  32         circleRed.setOnMousePressed(circleOnMousePressedEventHandler);
  33         circleRed.setOnMouseDragged(circleOnMouseDraggedEventHandler);
  34
  35         Circle circleGreen = new Circle(50.0, Color.GREEN);
  36         circleGreen.setCursor(Cursor.MOVE);
  37         circleGreen.setCenterX(150);
  38         circleGreen.setCenterY(150);
  39         circleGreen.setOnMousePressed(circleOnMousePressedEventHandler);
  40         circleGreen.setOnMouseDragged(circleOnMouseDraggedEventHandler);
  41
  42         Circle circleBlue = new Circle(50.0, Color.BLUE);
  43         circleBlue.setCursor(Cursor.CROSSHAIR);
  44         circleBlue.setTranslateX(300);
  45         circleBlue.setTranslateY(100);
  46         circleBlue.setOnMousePressed(circleOnMousePressedEventHandler);
  47         circleBlue.setOnMouseDragged(circleOnMouseDraggedEventHandler);
  48
  49         Group root = new Group();
  50         root.getChildren().addAll(circleRed, circleGreen, circleBlue);
  51
  52         primaryStage.setResizable(false);
  53         primaryStage.setScene(new Scene(root, 400,350));
  54
  55         primaryStage.setTitle("java-buddy");
  56         primaryStage.show();
  57     }
  58
  59     public static void main(String[] args) {
  60         launch(args);
  61     }
  62
  63     private EventHandler<MouseEvent> circleOnMousePressedEventHandler = new EventHandler<MouseEvent>() {
  64         @Override
  65         public void handle(MouseEvent t) {
  66             orgSceneX = t.getSceneX();
  67             orgSceneY = t.getSceneY();
  68             orgTranslateX = ((Circle)(t.getSource())).getTranslateX();
  69             orgTranslateY = ((Circle)(t.getSource())).getTranslateY();
  70         }
  71     };
  72
  73     private EventHandler<MouseEvent> circleOnMouseDraggedEventHandler = new EventHandler<MouseEvent>() {
  74         @Override
  75         public void handle(MouseEvent t) {
  76             double offsetX = t.getSceneX() - orgSceneX;
  77             double offsetY = t.getSceneY() - orgSceneY;
  78             double newTranslateX = orgTranslateX + offsetX;
  79             double newTranslateY = orgTranslateY + offsetY;
  80
  81             ((Circle)(t.getSource())).setTranslateX(newTranslateX);
  82             ((Circle)(t.getSource())).setTranslateY(newTranslateY);
  83         }
  84     };
  85 }