Wednesday, March 7, 2012

JavaFX 2.0: Create Path dynamically



package javafx_path;

import javafx.application.Application;
import javafx.event.EventHandler;
import javafx.scene.Group;
import javafx.scene.Scene;
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 java-buddy.blogspot.com
*/
public class JavaFX_Path extends Application {
/**
* @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, 400, 300, Color.WHITE);


final Path path = new Path();
path.setStrokeWidth(1);
path.setStroke(Color.BLACK);

//Mouse button pressed - clear path and start from the current X, Y.
scene.onMousePressedProperty().set(new EventHandler<MouseEvent>(){

@Override
public void handle(MouseEvent event) {
path.getElements().clear();
path.getElements().add(new MoveTo(event.getX(), event.getY()));
}
});

//Mouse dragged - add current point.
scene.onMouseDraggedProperty().set(new EventHandler<MouseEvent>(){

@Override
public void handle(MouseEvent event) {
path.getElements().add(new LineTo(event.getX(), event.getY()));
}
});

//Mouse button released, finish path.
scene.onMouseReleasedProperty().set(new EventHandler<MouseEvent>(){

@Override
public void handle(MouseEvent event) {

}
});

root.getChildren().add(path);
primaryStage.setScene(scene);
primaryStage.show();

}
}


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