Further context-related changes for the JSR-231 API. The GLContext

implementations on all platforms have been split into orthogonal
GLDrawable and GLContext concepts. It is now possible to create more
than one GLContet per GLDrawable (though this has not been tested
yet). GLCanvas has been reimplemented in terms of
GLDrawableFactory.getGLDrawable(). More functionality has been moved
from GLDrawable to GLAutoDrawable. Reimplemented lazy sending of
reshape GLEventListener events in GLCanvas and GLJPanel and deleted
notion of deferred reshapes from GLDrawableHelper and elsewhere.
Sharing of textures and display lists is now expressed in terms of
GLContexts instead of GLDrawables. Still need to move pbuffer creation
into GLDrawableFactory from the onscreen GLContext implementations.
Added option to gleem ExaminerViewer to disable automatic redraws upon
mouse events and respecified more of gleem to work on GLAutoDrawables
rather than GLDrawables. Updated all JOGL demos to work with new APIs
and slightly different initialization sequences (in particular, for
pbuffers -- this will change with the addition of
GLDrawableFactory.createGLPbuffer()).


git-svn-id: file:///usr/local/projects/SUN/JOGL/git-svn/svn-server-sync/jogl/branches/JSR-231@324 232f8b59-042b-4e1e-8c03-345bb8c30851

1 files changed, 174 insertions, 0 deletions

diff --git a/src/net/java/games/jogl/impl/x11/X11OnscreenGLDrawable.java b/src/net/java/games/jogl/impl/x11/X11OnscreenGLDrawable.java
new file mode 100644
index 000000000..9b9705122
--- /dev/null
+++ b/src/net/java/games/jogl/impl/x11/X11OnscreenGLDrawable.java
@@ -0,0 +1,174 @@
+/*
+ * Copyright (c) 2003 Sun Microsystems, Inc. All Rights Reserved.
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ * 
+ * - Redistribution of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * 
+ * - Redistribution in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * 
+ * Neither the name of Sun Microsystems, Inc. or the names of
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ * 
+ * This software is provided "AS IS," without a warranty of any kind. ALL
+ * EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES,
+ * INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A
+ * PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE HEREBY EXCLUDED. SUN
+ * MICROSYSTEMS, INC. ("SUN") AND ITS LICENSORS SHALL NOT BE LIABLE FOR
+ * ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING OR
+ * DISTRIBUTING THIS SOFTWARE OR ITS DERIVATIVES. IN NO EVENT WILL SUN OR
+ * ITS LICENSORS BE LIABLE FOR ANY LOST REVENUE, PROFIT OR DATA, OR FOR
+ * DIRECT, INDIRECT, SPECIAL, CONSEQUENTIAL, INCIDENTAL OR PUNITIVE
+ * DAMAGES, HOWEVER CAUSED AND REGARDLESS OF THE THEORY OF LIABILITY,
+ * ARISING OUT OF THE USE OF OR INABILITY TO USE THIS SOFTWARE, EVEN IF
+ * SUN HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
+ * 
+ * You acknowledge that this software is not designed or intended for use
+ * in the design, construction, operation or maintenance of any nuclear
+ * facility.
+ * 
+ * Sun gratefully acknowledges that this software was originally authored
+ * and developed by Kenneth Bradley Russell and Christopher John Kline.
+ */
+
+package net.java.games.jogl.impl.x11;
+
+import java.awt.Component;
+
+import net.java.games.jogl.*;
+import net.java.games.jogl.impl.*;
+
+public class X11OnscreenGLDrawable extends X11GLDrawable {
+  public static final int LOCK_SURFACE_NOT_READY = 1;
+  public static final int LOCK_SURFACE_CHANGED = 2;
+  public static final int LOCK_SUCCESS = 3;
+
+  // Variables for lockSurface/unlockSurface
+  private JAWT_DrawingSurface ds;
+  private JAWT_DrawingSurfaceInfo dsi;
+  private JAWT_X11DrawingSurfaceInfo x11dsi;
+  
+  // Indicates whether the component (if an onscreen context) has been
+  // realized. Plausibly, before the component is realized the JAWT
+  // should return an error or NULL object from some of its
+  // operations; this appears to be the case on Win32 but is not true
+  // at least with Sun's current X11 implementation (1.4.x), which
+  // crashes with no other error reported if the DrawingSurfaceInfo is
+  // fetched from a locked DrawingSurface during the validation as a
+  // result of calling show() on the main thread. To work around this
+  // we prevent any JAWT or OpenGL operations from being done until
+  // addNotify() is called on the component.
+  protected boolean realized;
+
+  public X11OnscreenGLDrawable(Component component) {
+    super(component, null, null);
+  }
+
+  public GLContext createContext(GLContext shareWith) {
+    return new X11OnscreenGLContext(this, shareWith);
+  }
+
+  public void setRealized(boolean realized) {
+    this.realized = realized;
+  }
+
+  public void setSize(int width, int height) {
+    component.setSize(width, height);
+  }
+
+  public int getWidth() {
+    return component.getWidth();
+  }
+
+  public int getHeight() {
+    return component.getHeight();
+  }
+
+  public void swapBuffers() throws GLException {
+    lockAWT();
+    GLX.glXSwapBuffers(display, drawable);
+    unlockAWT();
+  }
+
+  public int lockSurface() throws GLException {
+    if (!realized) {
+      return LOCK_SURFACE_NOT_READY;
+    }
+    if (drawable != 0) {
+      throw new GLException("Surface already locked");
+    }
+    ds = getJAWT().GetDrawingSurface(component);
+    if (ds == null) {
+      // Widget not yet realized
+      return LOCK_SURFACE_NOT_READY;
+    }
+    int res = ds.Lock();
+    if ((res & JAWTFactory.JAWT_LOCK_ERROR) != 0) {
+      throw new GLException("Unable to lock surface");
+    }
+    // See whether the surface changed and if so destroy the old
+    // OpenGL context so it will be recreated (NOTE: removeNotify
+    // should handle this case, but it may be possible that race
+    // conditions can cause this code to be triggered -- should test
+    // more)
+    int ret = LOCK_SUCCESS;
+    if ((res & JAWTFactory.JAWT_LOCK_SURFACE_CHANGED) != 0) {
+      ret = LOCK_SURFACE_CHANGED;
+    }
+    dsi = ds.GetDrawingSurfaceInfo();
+    if (dsi == null) {
+      // Widget not yet realized
+      ds.Unlock();
+      getJAWT().FreeDrawingSurface(ds);
+      ds = null;
+      return LOCK_SURFACE_NOT_READY;
+    }
+    x11dsi = (JAWT_X11DrawingSurfaceInfo) dsi.platformInfo();
+    display = x11dsi.display();
+    drawable = x11dsi.drawable();
+    visualID = x11dsi.visualID();
+    if (display == 0 || drawable == 0) {
+      // Widget not yet realized
+      ds.FreeDrawingSurfaceInfo(dsi);
+      ds.Unlock();
+      getJAWT().FreeDrawingSurface(ds);
+      ds = null;
+      dsi = null;
+      x11dsi = null;
+      display = 0;
+      drawable = 0;
+      visualID = 0;
+      return LOCK_SURFACE_NOT_READY;
+    }
+    return ret;
+  }
+
+  public void unlockSurface() {
+    if (drawable == 0) {
+      throw new GLException("Surface already unlocked");
+    }
+    ds.FreeDrawingSurfaceInfo(dsi);
+    ds.Unlock();
+    getJAWT().FreeDrawingSurface(ds);
+    ds = null;
+    dsi = null;
+    x11dsi = null;
+    display = 0;
+    drawable = 0;
+    visualID = 0;
+  }
+
+  //----------------------------------------------------------------------
+  // Internals only below this point
+  //
+
+  private JAWT getJAWT() {
+    return X11GLContextFactory.getJAWT();
+  }
+}