I am trying to align the whole chart within a JFrame but the normal component codes that I know do not work for JChartPanels. Initially I tried to setAligmentX and Y on the JChartPanel but that didn't work. I then tried to add the JChartPanel to a JPanel then setAlignment but once I add the JChartPanel to a JPanel the graph is no longer visible.
The code below creates a graph within a JFrame at the default top left location. I need to align the graph- use any values as I will change them later to fit my purpose.
The contained code without any of the attempts(errors) mentioned above:
import java.awt.*;
import javax.swing.*;
import org.jfree.chart.ChartFactory;
import org.jfree.chart.ChartPanel;
import org.jfree.chart.JFreeChart;
import org.jfree.chart.plot.PlotOrientation;
import org.jfree.data.xy.XYDataset;
import org.jfree.data.xy.XYSeries;
import org.jfree.data.xy.XYSeriesCollection;
public class ChartTest extends javax.swing.JFrame {
public ChartTest() {
XYSeries Goals = new XYSeries("Goals Scored");
Goals.add(1, 1.0);
Goals.add(2, 3.0);
Goals.add(3, 2.0);
Goals.add(4, 0.0);
Goals.add(5, 3.0);
XYDataset xyDataset = new XYSeriesCollection(Goals);
JFreeChart chart = ChartFactory.createXYLineChart("Goals Scored Over Time", "Fixture Number", "Goals", xyDataset, PlotOrientation.VERTICAL, true, true, false);
JPanel jPanel = new JPanel();
jPanel.setLayout(new BoxLayout(jPanel, BoxLayout.PAGE_AXIS));
jPanel.setVisible(true);
jPanel.setSize(300, 300);
ChartPanel CP = new ChartPanel(chart) {
#Override
public Dimension getPreferredSize() {
return new Dimension(300, 300);
}
};
CP.setMouseWheelEnabled(true);
add(CP);
setDefaultCloseOperation(EXIT_ON_CLOSE);
pack();
initComponents();
}
public static void main(String args[]) {
java.awt.EventQueue.invokeLater(new Runnable() {
public void run() {
new ChartTest().setVisible(true);
}
});
}
The result is just an empty window.
I suspect that your GUI editor's implementation of initComponents() is at fault. You'll have to examine the generated code to see. Here's a complete working example form for reference:
Minimal, Complete, Tested and Readable Example:
import java.awt.Dimension;
import javax.swing.BoxLayout;
import javax.swing.JPanel;
import org.jfree.chart.ChartFactory;
import org.jfree.chart.ChartPanel;
import org.jfree.chart.JFreeChart;
import org.jfree.chart.plot.PlotOrientation;
import org.jfree.data.xy.XYDataset;
import org.jfree.data.xy.XYSeries;
import org.jfree.data.xy.XYSeriesCollection;
public class ChartTest extends javax.swing.JFrame {
public ChartTest() {
XYSeries Goals = new XYSeries("Goals Scored");
Goals.add(1, 1.0);
Goals.add(2, 3.0);
Goals.add(3, 2.0);
Goals.add(4, 0.0);
Goals.add(5, 3.0);
XYDataset xyDataset = new XYSeriesCollection(Goals);
JFreeChart chart = ChartFactory.createXYLineChart(
"Goals Scored Over Time", "Fixture Number", "Goals",
xyDataset, PlotOrientation.VERTICAL, true, true, false);
JPanel jPanel = new JPanel();
jPanel.setLayout(new BoxLayout(jPanel, BoxLayout.PAGE_AXIS));
jPanel.setVisible(true);
jPanel.setSize(300, 300);
ChartPanel CP = new ChartPanel(chart) {
#Override
public Dimension getPreferredSize() {
return new Dimension(400, 300);
}
};
CP.setMouseWheelEnabled(true);
add(CP);
setDefaultCloseOperation(EXIT_ON_CLOSE);
pack();
}
public static void main(String args[]) {
java.awt.EventQueue.invokeLater(new Runnable() {
#Override
public void run() {
new ChartTest().setVisible(true);
}
});
}
}
Related
I am trying to create a game with JavaFX. I have created 2 stages, one is for the splashscreen, the second one is for the actual game itself. This is my first ever JavaFX program, i am a student learning JavaFX. The problem i am having is that when i hide the first stage and show the second one, the second stage stays blank for a few seconds and then continues to show all element(s). For now, there is only a gif showing in the stage with some music(which is not delayed in loading, because it is an instance variable). I don't want to create many instance variables for each of the elements i wish to put into the stage. Below is the code, where only the necessary code is shown to understand the problem:
import java.awt.Dimension;
import java.awt.Toolkit;
import java.io.File;
import javafx.animation.Animation;
import javafx.animation.KeyFrame;
import javafx.animation.Timeline;
import javafx.application.Application;
import javafx.application.Platform;
import javafx.event.ActionEvent;
import javafx.event.EventHandler;
import javafx.scene.Group;
import javafx.scene.Node;
import javafx.scene.Scene;
import javafx.scene.canvas.Canvas;
import javafx.scene.control.CheckBox;
import javafx.scene.control.Slider;
import javafx.scene.control.TextField;
import javafx.scene.image.Image;
import javafx.scene.image.ImageView;
import javafx.scene.input.KeyCode;
import javafx.scene.input.KeyEvent;
import javafx.scene.input.MouseEvent;
import javafx.scene.media.Media;
import javafx.scene.media.MediaPlayer;
import javafx.scene.paint.Color;
import javafx.scene.shape.Rectangle;
import javafx.scene.text.Font;
import javafx.scene.text.Text;
import javafx.stage.Stage;
import javafx.util.Duration;
public class Main extends Application {
Dimension window = Toolkit.getDefaultToolkit().getScreenSize();
private double screenWidth = window.getWidth();
private double screenHeight = window.getHeight();
private boolean fullscreen = false;
private boolean music = false;
private double value = 0;
private Group root, root2;
private Image start;
private Image startHover;
private ImageView startViewer;
private Stage stage;
private boolean firstWindowExists = true;
private CheckBox full;
private CheckBox sound;
private Slider slider;
private Image BG;
private ImageView BGView;
private String path = "bin/Audio/8_bit_march.mp3";
private Media media;
private MediaPlayer player;
public static void main(String[] args) {
launch();
}
private void run() {
Image title = new Image("Title.png", 300, 0, true, true);
ImageView titleView= new ImageView();
titleView.setX(200);
titleView.setY(10);
titleView.setImage(title);
add(titleView);
start = new Image("Start1.png", 200, 0, true, true);
startHover = new Image("Start_Hover1.png", 200, 0, true, true);
startViewer= new ImageView();
startViewer.setX(250);
startViewer.setY(300);
startViewer.setOnMouseEntered(mouseEnter);
startViewer.setOnMouseExited(mouseExit);
startViewer.setOnMouseReleased(mouseReleased);
startViewer.setImage(start);
add(startViewer);
if (!firstWindowExists) {//this code works
Image title2 = new Image("BG.gif", (screenWidth/1.25) + 4, (screenHeight/1.25)+4, false, true);
ImageView titleView2= new ImageView();
titleView2.setX(-2);
titleView2.setY(-2);
titleView2.setImage(title2);
add2(titleView2);
}
}
EventHandler<ActionEvent> event = new EventHandler<ActionEvent>() {
public void handle(ActionEvent e)
{
if (sound.isSelected()) { // the checkbox is checked to be enabled
slider.setVisible(true);
}
else {
slider.setVisible(false);
}
}
};
EventHandler<MouseEvent> mouseEnter = new EventHandler<MouseEvent>() {
public void handle(MouseEvent event) { // irrelevant for this problem
startViewer.setImage(startHover);
}
};
EventHandler<MouseEvent> mouseExit = new EventHandler<MouseEvent>() {
public void handle(MouseEvent event) {
startViewer.setImage(start);
}
};
EventHandler<MouseEvent> mouseReleased = new EventHandler<MouseEvent>() {
public void handle(MouseEvent event) {
stage.hide(); //hide first window
firstWindowExists = false;
Stage stage2 = new Stage(); // creating a new stage
root2 = new Group(); //creating new group
Scene scene2 = new Scene(root2, Color.WHITE);// creating a scene and adding the newly created Group
Canvas canvas2 = new Canvas(screenWidth/1.25, screenHeight/1.25); // creating a canvas for the screen
root2.getChildren().add(canvas2); // adding canvas to the group (window)
stage2.setTitle("Game"); // setting the title of the window
stage2.setScene(scene2); // Adds scene to the stage
stage2.setFullScreen(fullscreen);
stage2.show(); //after showing the screen here, it stays blank and then adds the title2 gif
stage2.centerOnScreen();
if (music) { //plays music
player.play();
player.setVolume(value);
player.setCycleCount(MediaPlayer.INDEFINITE);
}
run(); // runs the method with heavy lifting stuff
}
};
Timeline timeline = new Timeline(new KeyFrame(Duration.seconds(1), event -> {
}));
private void add(Node node) {
if (firstWindowExists) {
root.getChildren().add(node);
}
}
private void add2(Node node) {
root2.getChildren().add(node);
}
#Override
public void start(Stage stage) throws Exception { // main method which creates the first window
this.stage = stage;
stage.setTitle("Test GUI");
root = new Group();
Scene scene = new Scene(root, Color.DARKGRAY);
Canvas canvas = new Canvas(700, 350);
root.getChildren().add(canvas);
stage.setScene(scene);
stage.setResizable(false);
stage.show();
stage.centerOnScreen();
root.requestFocus();
run();
media = new Media(new File(path).toURI().toString());
player = new MediaPlayer(media);
}
}
In Javafx, I am trying to create a pane where I can add points through a mouse click event. When you click on the pane a circle should appear at your mouse position. The circles are being created, as I am tracking them in the console, but they are not showing in the graphics.
I did a similar program to this that auto drew an image that resized with the stage/window, I am using all the same techniques but that project didn't include event handling.
import javafx.application.Application;
import javafx.stage.Stage;
import javafx.scene.Scene;
import javafx.scene.layout.Pane;
import javafx.scene.shape.Circle;
import javafx.scene.shape.Line;
import javafx.scene.paint.Color;
import javafx.event.EventHandler;
import javafx.scene.input.MouseEvent;
public class ClickToShape extends Application {
private ClickPane clickPane = new ClickPane();
#Override
public void start(Stage primaryStage) throws Exception {
Pane clickPane = new ClickPane();
clickPane.setOnMouseClicked(new ClickHandler());
// create the scene
Scene clickScene = new Scene(clickPane, 500, 500);
// set up the window/stage
primaryStage.setTitle("Click To Draw");
primaryStage.setScene(clickScene); // add the scene to the stage
primaryStage.show(); // fire it off
}
public static void main(String[] args) {
launch(args);
}
class ClickHandler implements EventHandler<MouseEvent> {
#Override
public void handle(MouseEvent e) {
System.out.println("MouseEvent occured");
clickPane.addPoint(e.getX(), e.getY());
}
}
}
class ClickPane extends Pane{
private ArrayList<Circle> points = new ArrayList<Circle>();
private Color color1 = Color.BLACK;
public void addPoint(double x, double y) {
System.out.println("A new point function ran");
Circle newPoint = new Circle (x, y, 300, color1 );
System.out.println(newPoint.toString());
points.add(newPoint);
getChildren().clear();
getChildren().add(newPoint);
}
}
There are no error messages.
the problem is that you instantiated two ClickPane objects, one outside the start method, and another inside the start method, you added the second one to the scene but used the first one to add points, and that's why points aren't showing in your scene
what you can do about this is delete the first line in your start method, so the application will be using the same instance to fire events as to add to the scene, the code would look like this
import java.util.ArrayList;
import javafx.application.Application;
import javafx.stage.Stage;
import javafx.scene.Scene;
import javafx.scene.layout.Pane;
import javafx.scene.shape.Circle;
import javafx.scene.paint.Color;
import javafx.event.EventHandler;
import javafx.scene.input.MouseEvent;
public class ClickToShape extends Application {
private ClickPane clickPane = new ClickPane();
#Override
public void start(Stage primaryStage) throws Exception {
clickPane.setOnMouseClicked(new ClickHandler());
// create the scene
Scene clickScene = new Scene(clickPane, 500, 500);
// set up the window/stage
primaryStage.setTitle("Click To Draw");
primaryStage.setScene(clickScene); // add the scene to the stage
primaryStage.show(); // fire it off
}
public static void main(String[] args) {
launch(args);
}
class ClickHandler implements EventHandler<MouseEvent> {
#Override
public void handle(MouseEvent e) {
System.out.println("MouseEvent occured");
clickPane.addPoint(e.getX(), e.getY());
}
}
}
class ClickPane extends Pane{
private ArrayList<Circle> points = new ArrayList<Circle>();
private Color color1 = Color.BLACK;
public void addPoint(double x, double y) {
System.out.println("A new point function ran");
Circle newPoint = new Circle (x, y, 10, color1 );
System.out.println(newPoint.toString());
points.add(newPoint);
getChildren().setAll(newPoint);
}
}
I have a map mapping symbols to prices.I want to display a table with one column containing keys and the other column containing corresponding values in JavaFX
public class myMap {
Map<Symbol, Price> map;
}
I want to display a table like the following
Symbol | Price
I guess it can be done by using TableView with CallBack.
Since I've already done something similar to this I'll add my code.
import java.util.Map;
import javafx.application.Application;
import javafx.beans.property.ReadOnlyObjectWrapper;
import javafx.beans.property.SimpleStringProperty;
import javafx.collections.FXCollections;
import javafx.collections.MapChangeListener;
import javafx.collections.ObservableMap;
import javafx.event.ActionEvent;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.control.TableColumn;
import javafx.scene.control.TableView;
import javafx.scene.control.cell.TextFieldTableCell;
import javafx.scene.layout.VBox;
import javafx.stage.Stage;
import javafx.util.converter.NumberStringConverter;
public class MapTable extends Application {
#Override
public void start(Stage primaryStage) {
final ObservableMap<String, Number> obsMap = FXCollections.observableHashMap();
for (int i = 0; i < 3; i++) obsMap.put("key "+i, i*10d);
final TableView<ObservableMap.Entry<String, Number>> tv = new TableView(FXCollections.observableArrayList(obsMap.entrySet()));
tv.setEditable(true);
obsMap.addListener((MapChangeListener.Change<? extends String, ? extends Number> change) -> {
tv.setItems(FXCollections.observableArrayList(obsMap.entrySet()));
});
TableColumn<ObservableMap.Entry<String, Number>,String> keyCol = new TableColumn<>("key");
TableColumn<ObservableMap.Entry<String, Number>,Number> priceCol = new TableColumn<>("price");
tv.getColumns().addAll(keyCol,priceCol);
keyCol.setCellValueFactory((p) -> {
return new SimpleStringProperty(p.getValue().getKey());
});
keyCol.setCellFactory(TextFieldTableCell.forTableColumn());
keyCol.setOnEditCommit((TableColumn.CellEditEvent<Map.Entry<String,Number>, String> t) -> {
final String oldKey = t.getOldValue();
final Number oldPrice = obsMap.get(oldKey);
obsMap.remove(oldKey);
obsMap.put(t.getNewValue(),oldPrice);
});
priceCol.setCellValueFactory((p) -> {
return new ReadOnlyObjectWrapper<>(p.getValue().getValue());
});
priceCol.setCellFactory(TextFieldTableCell.forTableColumn(new NumberStringConverter()));
priceCol.setOnEditCommit((TableColumn.CellEditEvent<Map.Entry<String,Number>, Number> t) -> {
obsMap.put(t.getTableView().getItems().get(t.getTablePosition().getRow()).getKey(),//key
t.getNewValue());//val);
});
Button btn1 = new Button();
btn1.setText("Add data");
btn1.setOnAction((ActionEvent event) -> {
obsMap.put("hi",100);
});
Button btn2 = new Button();
btn2.setText("verify data");
btn2.setOnAction((ActionEvent event) -> {
for (Map.Entry<String,Number> me : obsMap.entrySet())
System.out.println("key "+me.getKey()+" val "+me.getValue());
});
VBox root = new VBox(tv,btn1,btn2);
Scene scene = new Scene(root, 300, 250);
primaryStage.setTitle("Map Table test");
primaryStage.setScene(scene);
primaryStage.show();
}
public static void main(String[] args) {
launch(args);
}
}
Hope this can help.
public class Demo {
public static void main(String[] args) {
// Use Java Collections to create the List.
Map<String,String> map = new HashMap<String,String>();
// Now add observability by wrapping it with ObservableList.
ObservableMap<String,String> observableMap = FXCollections.observableMap(map);
observableMap.addListener(new MapChangeListener() {
#Override
public void onChanged(MapChangeListener.Change change) {
System.out.println("Detected a change! ");
}
});
// Changes to the observableMap WILL be reported.
observableMap.put("key 1","value 1");
System.out.println("Size: "+observableMap.size());
// Changes to the underlying map will NOT be reported.
map.put("key 2","value 2");
System.out.println("Size: "+observableMap.size());
}
}
http://docs.oracle.com/javafx/2/collections/jfxpub-collections.htm
I'm working on a very simple program. I have an ImageView and I want to firing to this ImageView a ZoomEvent that I created. In Javafx 8 there 2 constructor that I can use to create ZoomEvent. But the listeners doesn't catch the event.
StackPane root = new StackPane();
final ImageView img = new ImageView(url);
img.setOnZoom(new EventHandler<ZoomEvent>() {
#Override
public void handle(ZoomEvent t) {
System.out.println("Zoom!");
}
});
img.setOnZoomStarted(new EventHandler<ZoomEvent>() {
#Override
public void handle(ZoomEvent t) {
System.out.println("Zoom Started!");
}
});
img.setOnZoomFinished(new EventHandler<ZoomEvent>() {
#Override
public void handle(ZoomEvent t) {
System.out.println("Zoom finished!");
}
});
ZoomEvent evt = new ZoomEvent(ZoomEvent.ANY, 200,200,200,200,false,false,false,false,false, false, 5.0,5.0, null);
root.getChildren().add(img);
Scene scene = new Scene(root, 600, 600);
primaryStage.setTitle("Zoom Sample");
primaryStage.setScene(scene);
primaryStage.show();
This is my code so far and I can't figure out what is wrong. There isn't any output.
You never fired the event with ZoomEvent.fireEvent(target, event) or stage.fireEvent(event).
You created the wrong type of event (create a ZoomEvent.ZOOM, not a ZoomEvent.ANY).
You didn't set the event screen co-ordinates correctly.
Working sample:
import javafx.application.Application;
import javafx.geometry.Point2D;
import javafx.scene.Scene;
import javafx.scene.image.ImageView;
import javafx.scene.input.ZoomEvent;
import javafx.scene.layout.StackPane;
import javafx.stage.Stage;
public class Zoom extends Application {
public static void main(String[] args) { launch(args); }
#Override
public void start(Stage stage) {
final ImageView img = new ImageView(
"http://icons.iconarchive.com/icons/kirei-kaze/kikis-delivery-service/256/jiji-icon.png" // image license: License: Free for non-commercial use. The products or characters depicted in these icons are © by Studio Ghibli. Linkback: http://www.iconarchive.com/artist/kirei-kaze.html
);
img.setOnZoom(e -> System.out.println("Zoom!"));
StackPane layout = new StackPane(img);
stage.setScene(new Scene(layout, 600, 600));
stage.show();
Point2D screenCoords = layout.localToScreen(300, 300);
ZoomEvent evt = new ZoomEvent(
ZoomEvent.ZOOM,
300, 300,
screenCoords.getX(), screenCoords.getY(),
false,false,false,false,false, false, 5.0,5.0, null
);
ZoomEvent.fireEvent(img, evt);
}
}
I am trying to do a tutorial that allows one to Add and Remove stocks and witness their price and change. This tutorial demonstrates how to use the GUI builder, GWT Designer, to create and design a Stock Watcher application based on the GWT tutorial.
http://code.google.com/webtoolkit/tools/gwtdesigner/tutorials/stockwatcher.html#design_ui
So far I have SW.java:
package edu.gatech.client;
import java.util.ArrayList;
import com.google.gwt.core.client.EntryPoint;
import com.google.gwt.event.dom.client.ClickEvent;
import com.google.gwt.event.dom.client.ClickHandler;
import com.google.gwt.event.dom.client.KeyCodes;
import com.google.gwt.user.client.Window;
import com.google.gwt.user.client.ui.Button;
import com.google.gwt.user.client.ui.RootPanel;
import com.google.gwt.user.client.ui.TextBox;
import com.google.gwt.user.client.ui.VerticalPanel;
import com.google.gwt.user.client.ui.FlexTable;
import com.google.gwt.user.client.ui.HorizontalPanel;
import com.google.gwt.user.client.ui.Label;
import com.google.gwt.event.dom.client.KeyPressHandler;
import com.google.gwt.event.dom.client.KeyPressEvent;
/**
* Entry point classes define <code>onModuleLoad()</code>.
*/
public class SW implements EntryPoint {
private RootPanel rootPanel;
private FlexTable stocksFlexTable;
private HorizontalPanel addPanel;
private VerticalPanel mainWindow;
private TextBox newSymbolTextBox;
private Button addButton;
private Label lastUpdatedLabel;
private ArrayList <String> stocks = new ArrayList<String>(); //Add this line
public void onModuleLoad() {
rootPanel = RootPanel.get();
mainWindow = new VerticalPanel();
rootPanel.add(mainWindow, 10, 10);
mainWindow.setSize("267px", "175px");
FlexTable stocksFlexTable = new FlexTable();
//Add these lines
stocksFlexTable.setText(0, 0, "Symbol");
stocksFlexTable.setText(0, 1, "Price");
stocksFlexTable.setText(0, 2, "Change");
stocksFlexTable.setText(0, 3, "Remove");
mainWindow.add(stocksFlexTable);
addPanel = new HorizontalPanel();
rootPanel.add(addPanel, 10, 200);
addPanel.setSize("267px", "68px");
newSymbolTextBox = new TextBox();
newSymbolTextBox.addKeyPressHandler(new KeyPressHandler() {
public void onKeyPress(KeyPressEvent event) {
if (event.getCharCode() == KeyCodes.KEY_ENTER){
addStock();
}
}
});
addPanel.add(newSymbolTextBox);
newSymbolTextBox.setWidth("211px");
addButton = new Button("Add");
addButton.addClickHandler(new ClickHandler() {
public void onClick(ClickEvent event) {
addStock();
}
});
addPanel.add(addButton);
lastUpdatedLabel = new Label("New Label");
rootPanel.add(lastUpdatedLabel, 48, 274);
}
private void addStock() {
final String symbol = newSymbolTextBox.getText().toUpperCase().trim();
newSymbolTextBox.setFocus(true);
// Stock code must be between 1 and 10 chars that are numbers, letters, or dots.
if (!symbol.matches("^[0-9A-Z\\.]{1,10}$")) {
Window.alert("'" + symbol + "' is not a valid symbol.");
newSymbolTextBox.selectAll();
return;
}
newSymbolTextBox.setText("");
// don't add the stock if it's already in the watch list
if (stocks.contains(symbol))
return;
// add the stock to the list
int row = stocksFlexTable.getRowCount();
stocks.add(symbol);
stocksFlexTable.setText(row, 0, symbol);
// add button to remove this stock from the list
Button removeStock = new Button("x");
removeStock.addClickHandler(new ClickHandler() {
public void onClick(ClickEvent event) {
int removedIndex = stocks.indexOf(symbol);
stocks.remove(removedIndex);
stocksFlexTable.removeRow(removedIndex + 1);
}
});
stocksFlexTable.setWidget(row, 3, removeStock);
}
}
When I run the web application, I cannot Add a stock. The program does, however, distinguish between bad stock names and acceptable ones. Instead I get an "uncaught exception escaped" error and the program doesn't really do anything. How do I troubleshoot this?
Use the debugger and single step through the code. Set a breakpoint on addStock's first line and find which line crashes. Once you find which line you then instrument the line to find out what aspect is causing the problem - assuming you can't deduce the problem by looking at the line.