public final void addDragListeners(final Node n) {
n.setOnMousePressed(
new EventHandler<MouseEvent>() {
@Override
public void handle(MouseEvent me) {
startDragX = me.getSceneX();
startDragY = me.getSceneY();
root.setStyle("-fx-opacity:.7;");
}
});
n.setOnMouseReleased(
new EventHandler<MouseEvent>() {
@Override
public void handle(MouseEvent me) {
root.setStyle("-fx-opacity:1;");
}
});
n.setOnMouseDragged(
new EventHandler<MouseEvent>() {
@Override
public void handle(MouseEvent me) {
stage.setX(me.getScreenX() - startDragX);
stage.setY(me.getScreenY() - startDragY);
}
});
}
@Override
public void start(final Stage primaryStage) {
primaryStage.setTitle("Chapter 3-2 Playing Video");
primaryStage.centerOnScreen();
primaryStage.initStyle(StageStyle.TRANSPARENT);
final Group root = new Group();
final Scene scene = new Scene(root, 540, 300, Color.rgb(0, 0, 0, 0));
// rounded rectangle with slightly transparent
Node applicationArea = createBackground(scene);
root.getChildren().add(applicationArea);
// allow the user to drag window on the desktop
attachMouseEvents(scene, primaryStage);
// allows the user to see the progress of the video playing
progressSlider = createSlider(scene);
root.getChildren().add(progressSlider);
// Dragging over surface
scene.setOnDragOver(
new EventHandler<DragEvent>() {
@Override
public void handle(DragEvent event) {
Dragboard db = event.getDragboard();
if (db.hasFiles() || db.hasUrl() || db.hasString()) {
event.acceptTransferModes(TransferMode.COPY);
if (mediaPlayer != null) {
mediaPlayer.stop();
}
} else {
event.consume();
}
}
});
// update slider as video is progressing (later removal)
progressListener =
new ChangeListener<Duration>() {
public void changed(
ObservableValue<? extends Duration> observable,
Duration oldValue,
Duration newValue) {
progressSlider.setValue(newValue.toSeconds());
}
};
// Dropping over surface
scene.setOnDragDropped(
new EventHandler<DragEvent>() {
@Override
public void handle(DragEvent event) {
Dragboard db = event.getDragboard();
boolean success = false;
URI resourceUrlOrFile = null;
// dragged from web browser address line?
if (db.hasContent(DataFormat.URL)) {
try {
resourceUrlOrFile = new URI(db.getUrl().toString());
} catch (URISyntaxException ex) {
ex.printStackTrace();
}
} else if (db.hasFiles()) {
// dragged from the file system
String filePath = null;
for (File file : db.getFiles()) {
filePath = file.getAbsolutePath();
}
resourceUrlOrFile = new File(filePath).toURI();
success = true;
}
// load media
Media media = new Media(resourceUrlOrFile.toString());
// stop previous media player and clean up
if (mediaPlayer != null) {
mediaPlayer.stop();
mediaPlayer.currentTimeProperty().removeListener(progressListener);
mediaPlayer.setOnPaused(null);
mediaPlayer.setOnPlaying(null);
mediaPlayer.setOnReady(null);
}
// create a new media player
mediaPlayer = MediaPlayerBuilder.create().media(media).build();
// as the media is playing move the slider for progress
mediaPlayer.currentTimeProperty().addListener(progressListener);
// play video when ready status
mediaPlayer.setOnReady(
new Runnable() {
@Override
public void run() {
progressSlider.setValue(1);
progressSlider.setMax(mediaPlayer.getMedia().getDuration().toMillis() / 1000);
mediaPlayer.play();
}
});
// Lazy init media viewer
if (mediaView == null) {
mediaView =
MediaViewBuilder.create()
.mediaPlayer(mediaPlayer)
.x(4)
.y(4)
.preserveRatio(true)
.opacity(.85)
.smooth(true)
.build();
mediaView.fitWidthProperty().bind(scene.widthProperty().subtract(220));
mediaView.fitHeightProperty().bind(scene.heightProperty().subtract(30));
// make media view as the second node on the scene.
root.getChildren().add(1, mediaView);
}
// sometimes loading errors occur
mediaView.setOnError(
new EventHandler<MediaErrorEvent>() {
public void handle(MediaErrorEvent event) {
event.getMediaError().printStackTrace();
}
});
mediaView.setMediaPlayer(mediaPlayer);
event.setDropCompleted(success);
event.consume();
}
});
// rectangular area holding buttons
final Group buttonArea = createButtonArea(scene);
// stop button will stop and rewind the media
Node stopButton = createStopControl();
// play button can resume or start a media
final Node playButton = createPlayControl();
// pauses media play
final Node pauseButton = createPauseControl();
stopButton.setOnMousePressed(
new EventHandler<MouseEvent>() {
public void handle(MouseEvent me) {
if (mediaPlayer != null) {
buttonArea.getChildren().removeAll(pauseButton, playButton);
buttonArea.getChildren().add(playButton);
mediaPlayer.stop();
}
}
});
// pause media and swap button with play button
pauseButton.setOnMousePressed(
new EventHandler<MouseEvent>() {
public void handle(MouseEvent me) {
if (mediaPlayer != null) {
buttonArea.getChildren().removeAll(pauseButton, playButton);
buttonArea.getChildren().add(playButton);
mediaPlayer.pause();
paused = true;
}
}
});
// play media and swap button with pause button
playButton.setOnMousePressed(
new EventHandler<MouseEvent>() {
public void handle(MouseEvent me) {
if (mediaPlayer != null) {
buttonArea.getChildren().removeAll(pauseButton, playButton);
buttonArea.getChildren().add(pauseButton);
paused = false;
mediaPlayer.play();
}
}
});
// add stop button to button area
buttonArea.getChildren().add(stopButton);
// set pause button as default
buttonArea.getChildren().add(pauseButton);
// add buttons
root.getChildren().add(buttonArea);
// create a close button
Node closeButton = createCloseButton(scene);
root.getChildren().add(closeButton);
primaryStage.setOnShown(
new EventHandler<WindowEvent>() {
public void handle(WindowEvent we) {
previousLocation = new Point2D(primaryStage.getX(), primaryStage.getY());
}
});
primaryStage.setScene(scene);
primaryStage.show();
}