SWT 2D Simple Demo : 2D « SWT JFace Eclipse « Java

SWT 2D Simple Demo

SWT 2D Simple Demo
 * Copyright (c) 2004 Berthold Daum. All rights reserved. This program and the
 * accompanying materials are made available under the terms of the Common
 * Public License v1.0 which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/cpl-v10.html
 * Contributors: Berthold Daum

import java.awt.RenderingHints;
import java.util.ArrayList;
import java.util.Iterator;

import org.eclipse.swt.SWT;
import org.eclipse.swt.awt.SWT_AWT;
import org.eclipse.swt.events.PaintEvent;
import org.eclipse.swt.events.PaintListener;
import org.eclipse.swt.events.SelectionAdapter;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.graphics.Point;
import org.eclipse.swt.layout.FillLayout;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.Text;

public class SWT2D {
  // Shell fur Popup-Editor
  Shell eShell = null;

  // Text-Widget fur Editor
  Text eText = null;

  // Liste eingegebener Zeichenketten
  ArrayList wordList = new ArrayList(12);

  public static void main(String[] args) {
    SWT2D swtawt = new SWT2D();

  private void run() {
    // Create top level shell
    final Display display = new Display();
    final Shell shell = new Shell(display);
    shell.setText("Java 2D Example");
    // GridLayout for canvas and button
    shell.setLayout(new GridLayout());
    // Create container for AWT canvas
    final Composite canvasComp = new Composite(shell, SWT.EMBEDDED);
    // Set preferred size
    GridData data = new GridData();
    data.widthHint = 600;
    data.heightHint = 500;
    // Create AWT Frame for Canvas
    java.awt.Frame canvasFrame = SWT_AWT.new_Frame(canvasComp);
    // Create Canvas and add it to the Frame
    final java.awt.Canvas canvas = new java.awt.Canvas();
    // Get graphical context and cast to Java2D
    final java.awt.Graphics2D g2d = (java.awt.Graphics2D) canvas
    // Enable antialiasing
    // Remember initial transform
    final java.awt.geom.AffineTransform origTransform = g2d.getTransform();
    // Create Clear button and position it
    Button clearButton = new Button(shell, SWT.PUSH);
    data = new GridData();
    data.horizontalAlignment = GridData.CENTER;
    // Event processing for Clear button
    clearButton.addSelectionListener(new SelectionAdapter() {
      public void widgetSelected(SelectionEvent e) {
        // Delete word list and redraw canvas
    // Process canvas mouse clicks
    canvas.addMouseListener(new java.awt.event.MouseListener() {
      public void mouseClicked(java.awt.event.MouseEvent e) {

      public void mouseEntered(java.awt.event.MouseEvent e) {

      public void mouseExited(java.awt.event.MouseEvent e) {

      public void mousePressed(java.awt.event.MouseEvent e) {
        // Manage pop-up editor
        display.syncExec(new Runnable() {
          public void run() {
            if (eShell == null) {
              // Create new Shell: non-modal!
              eShell = new Shell(shell, SWT.NO_TRIM
                  | SWT.MODELESS);
              eShell.setLayout(new FillLayout());
              // Text input field
              eText = new Text(eShell, SWT.BORDER);
              eText.setText("Text rotation in the SWT?");
              // Set position (Display coordinates)
              java.awt.Rectangle bounds = canvas.getBounds();
              org.eclipse.swt.graphics.Point pos = canvasComp
                  .toDisplay(bounds.width / 2,
                      bounds.height / 2);
              Point size = eShell.getSize();
              eShell.setBounds(pos.x, pos.y, size.x, size.y);
              // Open Shell
            } else if (!eShell.isVisible()) {
              // Editor versteckt, sichtbar machen
            } else {
              // Editor is visible - get text
              String t = eText.getText();
              // set editor invisible
              // Add text to list and redraw canvas

      public void mouseReleased(java.awt.event.MouseEvent e) {
    // Redraw the canvas
    canvasComp.addPaintListener(new PaintListener() {
      public void paintControl(PaintEvent e) {
        // Pass the redraw task to AWT event queue
        java.awt.EventQueue.invokeLater(new Runnable() {
          public void run() {
            // Compute canvas center
            java.awt.Rectangle bounds = canvas.getBounds();
            int originX = bounds.width / 2;
            int originY = bounds.height / 2;
            // Reset canvas
            g2d.fillRect(0, 0, bounds.width, bounds.height);
            // Set font
            g2d.setFont(new java.awt.Font("Myriad",
                java.awt.Font.PLAIN, 32));
            double angle = 0d;
            // Prepare star shape
            double increment = Math.toRadians(30);
            Iterator iter = wordList.iterator();
            while (iter.hasNext()) {
              // Determine text colors in RGB color cycle
              float red = (float) (0.5 + 0.5 * Math.sin(angle));
              float green = (float) (0.5 + 0.5 * Math.sin(angle
                  + Math.toRadians(120)));
              float blue = (float) (0.5 + 0.5 * Math.sin(angle
                  + Math.toRadians(240)));
              g2d.setColor(new java.awt.Color(red, green, blue));
              // Redraw text
              String text = (String) iter.next();
              g2d.drawString(text, originX + 50, originY);
              // Rotate for next text output
              g2d.rotate(increment, originX, originY);
              angle += increment;
    // Finish shell and open it
    // SWT event processing
    while (!shell.isDisposed()) {
      if (!display.readAndDispatch())



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