Merge branch 'master' of github.com:mbien/jogl

1 files changed, 125 insertions, 0 deletions

diff --git a/src/jogl/classes/com/jogamp/opengl/impl/awt/AWTUtil.java b/src/jogl/classes/com/jogamp/opengl/impl/awt/AWTUtil.java
new file mode 100644
index 000000000..306f6cee7
--- /dev/null
+++ b/src/jogl/classes/com/jogamp/opengl/impl/awt/AWTUtil.java
@@ -0,0 +1,125 @@
+/*
+ * 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.
+ */
+
+package com.jogamp.opengl.impl.awt;
+
+import com.sun.nativewindow.impl.jawt.*;
+
+import com.jogamp.opengl.impl.*;
+
+import javax.media.opengl.*;
+
+import java.lang.reflect.*;
+import java.awt.GraphicsEnvironment;
+
+public class AWTUtil {
+  // See whether we're running in headless mode
+  private static boolean headlessMode;
+  private static Class j2dClazz = null;
+  private static Method isOGLPipelineActive = null;
+  private static Method isQueueFlusherThread = null;
+  private static boolean j2dOk = false;
+
+  static {
+    lockedToolkit = false;
+    headlessMode = GraphicsEnvironment.isHeadless();
+    if(!headlessMode) {
+        try {
+            j2dClazz = Class.forName("com.jogamp.opengl.impl.awt.Java2D");
+            isOGLPipelineActive = j2dClazz.getMethod("isOGLPipelineActive", null);
+            isQueueFlusherThread = j2dClazz.getMethod("isQueueFlusherThread", null);
+            j2dOk = true;
+        } catch (Exception e) {}
+    }
+  }
+
+  private static boolean lockedToolkit;
+
+  public static synchronized void lockToolkit() throws GLException {
+    if (lockedToolkit) {
+      throw new GLException("Toolkit already locked");
+    }
+    lockedToolkit = true;
+
+    if (headlessMode) {
+      // Workaround for running (to some degree) in headless
+      // environments but still supporting rendering via pbuffers
+      // For full correctness, would need to implement a Lock class
+      return;
+    }
+
+    if(j2dOk) {
+      try {
+        if( !((Boolean)isOGLPipelineActive.invoke(null, null)).booleanValue() ||
+            !((Boolean)isQueueFlusherThread.invoke(null, null)).booleanValue() ) {
+          JAWTUtil.lockToolkit();
+        }
+      } catch (Exception e) { j2dOk=false; }
+    } 
+    if(!j2dOk) {
+      JAWTUtil.lockToolkit();
+    }
+  }
+
+  public static synchronized void unlockToolkit() {
+    if (lockedToolkit) {
+        lockedToolkit = false;
+        if (headlessMode) {
+          // Workaround for running (to some degree) in headless
+          // environments but still supporting rendering via pbuffers
+          // For full correctness, would need to implement a Lock class
+          return;
+        }
+
+        if(j2dOk) {
+          try {
+            if( !((Boolean)isOGLPipelineActive.invoke(null, null)).booleanValue() ||
+                !((Boolean)isQueueFlusherThread.invoke(null, null)).booleanValue() ) {
+              JAWTUtil.unlockToolkit();
+            }
+          } catch (Exception e) { j2dOk=false; }
+        } 
+        if(!j2dOk) {
+          JAWTUtil.unlockToolkit();
+        }
+    }
+  }
+
+  public static boolean isToolkitLocked() {
+    return JAWTUtil.isToolkitLocked();
+  }
+
+}