package javafx_mouseevent; import javafx.application.Application; import javafx.event.EventHandler; import javafx.scene.Group; import javafx.scene.Scene; import javafx.scene.control.Label; import javafx.scene.input.MouseEvent; import javafx.scene.paint.Color; import javafx.scene.shape.LineTo; import javafx.scene.shape.MoveTo; import javafx.scene.shape.Path; import javafx.stage.Stage; /** * * @web http://java-buddy.blogspot.com/ */ public class JavaFX_MouseEvent extends Application { Label label; Path path; /** * @param args the command line arguments */ public static void main(String[] args) { launch(args); } @Override public void start(Stage primaryStage) { primaryStage.setTitle("java-buddy.blogspot.com"); Group root = new Group(); Scene scene = new Scene(root, 300, 250); label = new Label("Wait mouse"); path = new Path(); path.setStrokeWidth(1); path.setStroke(Color.BLACK); scene.setOnMouseClicked(mouseHandler); scene.setOnMouseDragged(mouseHandler); scene.setOnMouseEntered(mouseHandler); scene.setOnMouseExited(mouseHandler); scene.setOnMouseMoved(mouseHandler); scene.setOnMousePressed(mouseHandler); scene.setOnMouseReleased(mouseHandler); root.getChildren().add(label); root.getChildren().add(path); primaryStage.setScene(scene); primaryStage.show(); } EventHandler<MouseEvent> mouseHandler = new EventHandler<MouseEvent>() { @Override public void handle(MouseEvent mouseEvent) { label.setText(mouseEvent.getEventType() + "\n" + "X : Y - " + mouseEvent.getX() + " : " + mouseEvent.getY() + "\n" + "SceneX : SceneY - " + mouseEvent.getSceneX() + " : " + mouseEvent.getSceneY() + "\n" + "ScreenX : ScreenY - " + mouseEvent.getScreenX() + " : " + mouseEvent.getScreenY()); if(mouseEvent.getEventType() == MouseEvent.MOUSE_PRESSED){ path.getElements().clear(); path.getElements().add(new MoveTo(mouseEvent.getX(), mouseEvent.getY())); }else if(mouseEvent.getEventType() == MouseEvent.MOUSE_DRAGGED){ path.getElements().add(new LineTo(mouseEvent.getX(), mouseEvent.getY())); } } }; }
Wednesday, April 4, 2012
Free draw by MouseEvent
Last article demonstrate how to "Detect mouse event" in JavaFX 2. It's modify to free draw path in the EventHandler for MouseEvent.
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