Fixed Issue 25: Expose swapBuffers(), please

Fixed Issue 31: Make it safe to remove listeners from a GLDrawable while handling an event


git-svn-id: file:///usr/local/projects/SUN/JOGL/git-svn/svn-server-sync/jogl/trunk@93 232f8b59-042b-4e1e-8c03-345bb8c30851

1 files changed, 19 insertions, 5 deletions

diff --git a/src/net/java/games/jogl/impl/GLContext.java b/src/net/java/games/jogl/impl/GLContext.java
index 82672b1c3..98e56a314 100644
--- a/src/net/java/games/jogl/impl/GLContext.java
+++ b/src/net/java/games/jogl/impl/GLContext.java
@@ -102,6 +102,10 @@ public abstract class GLContext {
   // GLCanvas
   protected boolean noAutoRedraw;
 
+  // Flag for enabling / disabling automatic swapping of the front and
+  // back buffers
+  protected boolean autoSwapBuffers = true;
+
   // Offscreen context handling. Offscreen contexts should handle
   // these resize requests in makeCurrent and clear the
   // pendingOffscreenResize flag.
@@ -233,7 +237,9 @@ public abstract class GLContext {
         deferredReshapeAction = null;
       }
       runnable.run();
-      swapBuffers();
+      if (autoSwapBuffers && !isReshape) {
+        swapBuffers();
+      }
     } catch (RuntimeException e) {
       caughtException = true;
       throw(e);
@@ -347,6 +353,18 @@ public abstract class GLContext {
     return noAutoRedraw;
   }
 
+  public void setAutoSwapBufferMode(boolean autoSwapBuffers) {
+    this.autoSwapBuffers = autoSwapBuffers;
+  }
+
+  public boolean getAutoSwapBufferMode() {
+    return autoSwapBuffers;
+  }
+
+  /** Swaps the buffers of the OpenGL context if necessary. All error
+      conditions cause a GLException to be thrown. */
+  public abstract void swapBuffers() throws GLException;
+
   /** Routine needed only for offscreen contexts in order to resize
       the underlying bitmap. Called by GLJPanel. */
   public void resizeOffscreenContext(int newWidth, int newHeight) {
@@ -492,10 +510,6 @@ public abstract class GLContext {
       GLException to be thrown. */
   protected abstract void free() throws GLException;
 
-  /** Swaps the buffers of the OpenGL context if necessary. All error
-      conditions cause a GLException to be thrown. */
-  protected abstract void swapBuffers() throws GLException;
-
   /** Helper routine which resets a ProcAddressTable generated by the
       GLEmitter by looking up anew all of its function pointers. */
   protected void resetProcAddressTable(Object table) {