1    // Copyright 2004 Adam Megacz, see the COPYING file for licensing [GPL]
2    package org.xwt.plat;
3    
4    import java.awt.*;
5    import java.awt.event.*;
6    import java.awt.image.*;
7    import java.awt.datatransfer.*;
8    import java.net.*;
9    import java.io.*;
10   import java.util.*;
11   import org.xwt.util.*;
12   import org.xwt.*;
13   import java.lang.reflect.*;
14   
15   
16   /** Platform class for most reasonable Java1.2+ Java2s */
17   public class Java2 extends AWT {
18   
19       private boolean isJava14 = false;
20   
21       public Java2() {
22           // disable the focus manager so we can intercept the tab key
23           String versionString = System.getProperty("java.version", "");
24           int secondDecimal = versionString.substring(versionString.indexOf('.') + 1).indexOf('.');
25           if (secondDecimal != -1) versionString = versionString.substring(0, secondDecimal);
26           double version = Double.parseDouble(versionString);
27           if (version >= 1.4) {
28               isJava14 = true;
29               try {
30                   Toolkit t = java.awt.Toolkit.getDefaultToolkit();
31                   Method m = java.awt.Toolkit.class.getMethod("setDynamicLayout", new Class[] { Boolean.class });
32                   m.invoke(t, new Object[] { Boolean.TRUE });
33               } catch (Exception e) {
34                   Log.info(this, "Exception while trying to enable AWT Dynamic Layout");
35                   Log.info(this, e);
36               }
37           }
38           javax.swing.FocusManager.setCurrentManager(new javax.swing.FocusManager() {
39                   public void processKeyEvent(Component focusedComponent, KeyEvent anEvent) { }
40                   public void focusPreviousComponent(Component aComponent) { }
41                   public void focusNextComponent(Component aComponent) { }
42               });
43       }
44   
45       /** this is done with reflection in case a new version of the plugin comes out that doesn't let us pull the sun.plugin.* trick */
46       protected synchronized org.xwt.HTTP.Proxy _detectProxy() {
47           return (org.xwt.HTTP.Proxy)java.security.AccessController.doPrivileged(new java.security.PrivilegedAction() {
48                   public Object run() {
49                       try {
50                           org.xwt.HTTP.Proxy pi = new org.xwt.HTTP.Proxy();
51                           
52                           Class PluginProxyHandler = Class.forName("sun.plugin.protocol.PluginProxyHandler");
53                           Method getDefaultProxyHandler = PluginProxyHandler.getMethod("getDefaultProxyHandler", new Class[] { });
54                           Object proxyHandler = getDefaultProxyHandler.invoke(null, new Object[] { });
55                           
56                           Class ProxyHandler = Class.forName("sun.plugin.protocol.ProxyHandler");
57                           Method getProxyInfo = ProxyHandler.getMethod("getProxyInfo", new Class[] { URL.class });
58                           Object proxyInfo = getProxyInfo.invoke(proxyHandler, new Object[] { new URL("http://www.xwt.org") });
59                           
60                           Class ProxyInfo = Class.forName("sun.plugin.protocol.ProxyInfo");
61                           
62                           if (((Boolean)ProxyInfo.getMethod("isSocksUsed", new Class[] { }).invoke(proxyInfo, new Object[] { })).booleanValue()) {
63                               pi.socksProxyHost =
64                                   (String)ProxyInfo.getMethod("getSocksProxy", new Class[] { }).invoke(proxyInfo, new Object[] { });
65                               pi.socksProxyPort =
66                                   ((Integer)ProxyInfo.getMethod("getSocksPort", new Class[] { }).invoke(proxyInfo, new Object[] { })).intValue();
67                           }
68                           
69                           if (((Boolean)ProxyInfo.getMethod("isProxyUsed", new Class[] { }).invoke(proxyInfo, new Object[] { })).booleanValue()) {
70                               pi.httpProxyHost =
71                                   (String)ProxyInfo.getMethod("getProxy", new Class[] { }).invoke(proxyInfo, new Object[] { });
72                               pi.httpProxyPort =
73                                   ((Integer)ProxyInfo.getMethod("getPort", new Class[] { }).invoke(proxyInfo, new Object[] { })).intValue();
74                           }
75                           
76                           if (pi.httpProxyHost != null || pi.socksProxyHost != null) return pi;
77                           else return null;
78   
79                       } catch (Throwable e) {
80                           if (Log.on) Log.info(this, "No proxy information found in Java Plugin classes");
81                           return null;
82                       }
83                   }});
84       }
85   
86       protected PixelBuffer _createPixelBuffer(int w, int h, Surface owner) { return new Java2PixelBuffer(w, h); }
87       protected Surface _createSurface(final Box root, final boolean framed) {
88           return (Surface)java.security.AccessController.doPrivileged(new java.security.PrivilegedAction() {
89                   public Object run() {
90                       if (isJava14) {
91                           try {
92                                // weaken the binding here to avoid link errors on 1.3.x
93                                Class java14SurfaceClass = Class.forName(Java2.class.getName() + "$Java14Surface");
94                                Constructor ctor = java14SurfaceClass.getConstructor(new Class[] { Box.class, Boolean.TYPE });
95                                return (Surface)ctor.newInstance(new Object[] { root, new Boolean(framed) });
96                           } catch (Exception e) {
97                               Log.info(this, e);
98                               throw new LinkageError("error: " + e);
99                           }
100                      } else {
101                          return new Java2Surface(root, framed);
102                      }
103                  }
104              });
105      }
106  
107      // Inner Classes //////////////////////////////////////////////////////////////////
108  
109      private static Cursor invisibleCursor =
110          Toolkit.getDefaultToolkit().createCustomCursor(new BufferedImage(2, 2, BufferedImage.TYPE_INT_ARGB),
111                                                         new Point(1, 1), "invisible");
112  
113      protected static class Java2Surface extends AWTSurface {
114  
115          public Java2Surface(Box root, boolean framed) { super(root, framed); }
116  
117          protected void _setMinimized(boolean b) {
118              if (frame == null) Log.info(this, "JDK 1.2 can only minimize frames, not windows");
119              else if (b) frame.setState(java.awt.Frame.ICONIFIED);
120              else frame.setState(java.awt.Frame.NORMAL);
121          }
122  
123          public void syncCursor() {
124              if (cursor.equals("invisible")) window.setCursor(invisibleCursor);
125              else super.syncCursor();
126          }
127      }
128  
129      protected static class Java14Surface extends Java2Surface implements WindowStateListener, MouseWheelListener {
130          public Java14Surface(Box root, boolean framed) {
131              super(root, true);
132              // JDK1.4 doesn't like java.lang.Window's...
133              if (!framed) ((Frame)window).setUndecorated(true);
134              window.addWindowStateListener(this);
135              window.addMouseWheelListener(this);
136              window.setVisible(true);
137          }
138  
139          protected void makeVisible() { }
140          
141          protected void _setMaximized(boolean m) {
142              if (frame == null) {
143                  if (Log.on) Log.info(this, "JDK 1.4 can only maximize frames, not windows");
144                  return;
145              }
146              frame.setExtendedState(m ? Frame.MAXIMIZED_BOTH : (minimized ? Frame.ICONIFIED : Frame.NORMAL));
147          }
148          protected void _setMinimized(boolean m) {
149              if (frame == null) {
150                  if (Log.on) Log.info(this, "JDK 1.4 can only minimize frames, not windows");
151                  return;
152              }
153              frame.setExtendedState(m ? Frame.ICONIFIED : (maximized ? Frame.MAXIMIZED_BOTH : Frame.NORMAL));
154          }
155          public void windowStateChanged(WindowEvent e) {
156              if (e.getOldState() != e.getNewState()) {
157                  if ((e.getNewState() & Frame.MAXIMIZED_BOTH) != 0) Maximized(true);
158                  else if (((e.getOldState() & Frame.MAXIMIZED_BOTH) != 0) && (e.getNewState() & Frame.MAXIMIZED_BOTH) == 0)
159                      Maximized(false);
160              }
161          }
162  
163          public void mouseWheelMoved(MouseWheelEvent m) {
164              // TODO: Uncomment this once Scroll is implemented in the core
165              //if(m.getScrollType() == MouseWheelEvent.WHEEL_UNIT_SCROLL) { Scroll(m.getUnitsToScroll()); }
166          }
167      }
168  
169      protected static class Java2PixelBuffer extends AWTPixelBuffer {
170          private static ColorModel cm = Toolkit.getDefaultToolkit().getColorModel();
171          private static Hashtable emptyHashtable = new Hashtable();
172          private static short[] sbank = null;
173          private static int[] ibank = null;
174          private static byte[] bbank = null;
175          private static int bank_start = 0;
176          private WritableRaster raster = null;
177          private SampleModel sm = null;
178          private DataBuffer buf = null;
179  
180          // this doens't seem to work on Windows
181          public void drawGlyph(Picture source, int dx, int dy, int cx1, int cy1, int cx2, int cy2, int rgb) {
182              AWTPicture src = (AWTPicture)source;
183              src.init();
184              Graphics2D g2 = (Graphics2D)i.getGraphics();
185              g2.setComposite(AlphaComposite.DstOut);
186              g2.setClip(cx1, cy1, cx2 - cx1, cy2 - cy1);
187              g2.drawImage(src.i, dx, dy, null);
188              g2.setComposite(AlphaComposite.DstOver);
189              g2.setColor(new Color((rgb & 0x00FF0000) >> 16, (rgb & 0x0000FF00) >> 8, (rgb & 0x000000FF)));
190              g2.fillRect(dx, dy, cx2 - dx, cy2 - dy);
191              g2.drawImage(i, 0, 0, null);
192              g2.setClip(0, 0, i.getWidth(null), i.getHeight(null));
193          }
194  
195          public Java2PixelBuffer(int w, int h) {
196              sm = cm.createCompatibleSampleModel(w, h);
197              int numSamples = w * h * sm.getNumDataElements();
198              if (sm.getDataType() == DataBuffer.TYPE_USHORT) {
199                  if (sbank == null || numSamples > 512 * 512 / 3) {
200                      buf = new DataBufferUShort(numSamples);
201                  } else {
202                      if (numSamples > sbank.length - bank_start) {
203                          bank_start = 0;
204                          sbank = new short[512 * 512];
205                      }
206                      buf = new DataBufferUShort(sbank, numSamples, bank_start);
207                      bank_start += numSamples;
208                  }
209              } else if (sm.getDataType() == DataBuffer.TYPE_BYTE) {
210                  if (bbank == null || numSamples > 512 * 512 / 3) {
211                      buf = new DataBufferByte(numSamples);
212                  } else {
213                      if (numSamples > bbank.length - bank_start) {
214                          bank_start = 0;
215                          bbank = new byte[512 * 512];
216                      }
217                      buf = new DataBufferByte(bbank, numSamples, bank_start);
218                      bank_start += numSamples;
219                  }
220              } else if (sm.getDataType() == DataBuffer.TYPE_INT) {
221                  if (ibank == null || numSamples > 512 * 512 / 3) {
222                      buf = new DataBufferInt(numSamples);
223                  } else {
224                      if (numSamples > ibank.length - bank_start) {
225                          bank_start = 0;
226                          ibank = new int[512 * 512];
227                      }
228                      buf = new DataBufferInt(ibank, numSamples, bank_start);
229                      bank_start += numSamples;
230                  }
231              }
232              raster = Raster.createWritableRaster(sm, buf, null);
233              i = new BufferedImage(cm, raster, false,  emptyHashtable);
234              g = i.getGraphics();
235          }
236      }
237  
238      protected String getDescriptiveName() { return isJava14 ? "Java 1.4+ JVM" : "Java 1.2+ JVM"; }
239  
240  }
241