// This can come on any thread. If we are in the process of reloading
  // the image and determining our state (loading == true) we don't fire
  // preference changed, or repaint, we just reset the fWidth/fHeight as
  // necessary and return. This is ok as we know when loading finishes
  // it will pick up the new height/width, if necessary.
  public boolean imageUpdate(Image img, int flags, int x, int y, int width, int height) {
    if (fImage == null || fImage != img) return false;

    // Bail out if there was an error:
    if ((flags & (ABORT | ERROR)) != 0) {
      fImage = null;
      repaint(0);
      return false;
    }

    // Resize image if necessary:
    short changed = 0;
    if ((flags & ImageObserver.HEIGHT) != 0)
      if (!getElement().getAttributes().isDefined(HTML.Attribute.HEIGHT)) {
        changed |= 1;
      }
    if ((flags & ImageObserver.WIDTH) != 0)
      if (!getElement().getAttributes().isDefined(HTML.Attribute.WIDTH)) {
        changed |= 2;
      }
    synchronized (this) {
      if ((changed & 1) == 1) {
        fWidth = width;
      }
      if ((changed & 2) == 2) {
        fHeight = height;
      }
      if (loading) {
        // No need to resize or repaint, still in the process of
        // loading.
        return true;
      }
    }
    if (changed != 0) {
      // May need to resize myself, asynchronously:
      if (DEBUG) System.out.println("ImageView: resized to " + fWidth + "x" + fHeight);

      Document doc = getDocument();
      try {
        if (doc instanceof AbstractDocument) {
          ((AbstractDocument) doc).readLock();
        }
        preferenceChanged(this, true, true);
      } finally {
        if (doc instanceof AbstractDocument) {
          ((AbstractDocument) doc).readUnlock();
        }
      }

      return true;
    }

    // Repaint when done or when new pixels arrive:
    if ((flags & (FRAMEBITS | ALLBITS)) != 0) repaint(0);
    else if ((flags & SOMEBITS) != 0) if (sIsInc) repaint(sIncRate);

    return ((flags & ALLBITS) == 0);
  }
Пример #2
0
  public static void main() {
    // Main
    frame = new JFrame("Java Playground");
    frame.setSize(640, 480);
    // Make sure the divider is properly resized
    frame.addComponentListener(
        new ComponentAdapter() {
          public void componentResized(ComponentEvent c) {
            splitter.setDividerLocation(.8);
          }
        });
    // Make sure the JVM is reset on close
    frame.addWindowListener(
        new WindowAdapter() {
          public void windowClosed(WindowEvent w) {
            new FrameAction().kill();
          }
        });

    // Setting up the keybinding
    // Ctrl+k or Cmd+k -> compile
    bind(KeyEvent.VK_K);

    // Ctrl+e or Cmd+e -> console
    bind(KeyEvent.VK_E);

    // Save, New file, Open file, Print.
    // Currently UNUSED until I figure out how normal java files and playground files will
    // interface.
    bind(KeyEvent.VK_S);
    bind(KeyEvent.VK_N);
    bind(KeyEvent.VK_O);
    bind(KeyEvent.VK_P);

    // Binds the keys to the action defined in the FrameAction class.
    frame.getRootPane().getActionMap().put("console", new FrameAction());

    // The main panel for typing code in.
    text = new JTextPane();
    textScroll = new JScrollPane(text);
    textScroll.setBorder(null);
    textScroll.setPreferredSize(new Dimension(640, 480));

    // Document with syntax highlighting. Currently unfinished.
    doc = text.getStyledDocument();
    doc.addDocumentListener(
        new DocumentListener() {
          public void changedUpdate(DocumentEvent d) {}

          public void insertUpdate(DocumentEvent d) {}

          public void removeUpdate(DocumentEvent d) {}
        });

    ((AbstractDocument) doc).setDocumentFilter(new NewLineFilter());

    // The output log; a combination compiler warning/error/runtime error/output log.
    outputText = new JTextPane();
    outputScroll = new JScrollPane(outputText);
    outputScroll.setBorder(null);

    // "Constant" for the error font
    error = new SimpleAttributeSet();
    error.addAttribute(StyleConstants.CharacterConstants.Italic, Boolean.TRUE);
    error.addAttribute(StyleConstants.Foreground, Color.RED);

    // "Constant" for the warning message font
    warning = new SimpleAttributeSet();
    warning.addAttribute(StyleConstants.CharacterConstants.Italic, Boolean.TRUE);
    warning.addAttribute(StyleConstants.Foreground, Color.PINK);

    // "Constant" for the debugger error font
    progErr = new SimpleAttributeSet();
    progErr.addAttribute(StyleConstants.Foreground, Color.BLUE);

    // Print streams to redirect System.out and System.err.
    out = new TextOutputStream(outputText, null);
    err = new TextOutputStream(outputText, error);
    System.setOut(new PrintStream(out));
    System.setErr(new PrintStream(err));

    // Sets up the output log
    outputText.setEditable(false);
    outputScroll.setVisible(true);

    // File input/output setup
    chooser = new JFileChooser();

    // Setting up miscellaneous stuff
    compiler = ToolProvider.getSystemJavaCompiler();
    JVMrunning = false;
    redirectErr = null;
    redirectOut = null;
    redirectIn = null;

    // Sets up the splitter pane and opens the program up
    splitter = new JSplitPane(JSplitPane.VERTICAL_SPLIT, textScroll, outputScroll);
    consoleDisplayed = false;
    splitter.remove(outputScroll); // Initially hides terminal until it is needed
    splitter.setOneTouchExpandable(true);
    frame.add(splitter);
    frame.setVisible(true);

    // Sets the divider to the proper one, for debugging
    // splitter.setDividerLocation(.8);
  }