From 8918190a198f5a0c602dd5d126e5fab8e537fda0 Mon Sep 17 00:00:00 2001
From: Romain Guy <romainguy@google.com>
Date: Tue, 10 Aug 2010 21:55:44 -0700
Subject: Support non-PorterDuff xfermodes with Xfermode.

Change-Id: Icef17b72da2d047a24aaac1ddf5cdae77b40d5b4
---
 graphics/java/android/graphics/ComposeShader.java      | 15 +++++++++++++--
 graphics/java/android/graphics/PorterDuffXfermode.java |  6 ++++++
 graphics/java/android/graphics/Xfermode.java           |  6 +++++-
 3 files changed, 24 insertions(+), 3 deletions(-)

diff --git a/graphics/java/android/graphics/ComposeShader.java b/graphics/java/android/graphics/ComposeShader.java
index ac1f277..e88211a 100644
--- a/graphics/java/android/graphics/ComposeShader.java
+++ b/graphics/java/android/graphics/ComposeShader.java
@@ -20,7 +20,12 @@ package android.graphics;
     an {@link android.graphics.Xfermode} subclass.
 */
 public class ComposeShader extends Shader {
+    /**
+     * Hold onto the shaders to avoid GC.
+     */
+    @SuppressWarnings({"UnusedDeclaration"})
     private final Shader mShaderA;
+    @SuppressWarnings({"UnusedDeclaration"})
     private final Shader mShaderB;
 
     /** Create a new compose shader, given shaders A, B, and a combining mode.
@@ -36,8 +41,14 @@ public class ComposeShader extends Shader {
         mShaderB = shaderB;
         native_instance = nativeCreate1(shaderA.native_instance, shaderB.native_instance,
                 (mode != null) ? mode.native_instance : 0);
-        native_shader = nativePostCreate1(native_instance, shaderA.native_shader,
-                shaderB.native_shader, (mode != null) ? mode.native_instance : 0);
+        if (mode instanceof PorterDuffXfermode) {
+            PorterDuff.Mode pdMode = ((PorterDuffXfermode) mode).mode;
+            native_shader = nativePostCreate1(native_instance, shaderA.native_shader,
+                    shaderB.native_shader, pdMode != null ? pdMode.nativeInt : 0);
+        } else {
+            native_shader = nativePostCreate1(native_instance, shaderA.native_shader,
+                    shaderB.native_shader, mode != null ? mode.native_instance : 0);
+        }
     }
 
     /** Create a new compose shader, given shaders A, B, and a combining PorterDuff mode.
diff --git a/graphics/java/android/graphics/PorterDuffXfermode.java b/graphics/java/android/graphics/PorterDuffXfermode.java
index cb127fd..6ba064c 100644
--- a/graphics/java/android/graphics/PorterDuffXfermode.java
+++ b/graphics/java/android/graphics/PorterDuffXfermode.java
@@ -18,11 +18,17 @@ package android.graphics;
 
 public class PorterDuffXfermode extends Xfermode {
     /**
+     * @hide
+     */
+    public final PorterDuff.Mode mode;
+
+    /**
      * Create an xfermode that uses the specified porter-duff mode.
      *
      * @param mode           The porter-duff mode that is applied
      */
     public PorterDuffXfermode(PorterDuff.Mode mode) {
+        this.mode = mode;
         native_instance = nativeCreateXfermode(mode.nativeInt);
     }
     
diff --git a/graphics/java/android/graphics/Xfermode.java b/graphics/java/android/graphics/Xfermode.java
index 42c410e..2467bdc 100644
--- a/graphics/java/android/graphics/Xfermode.java
+++ b/graphics/java/android/graphics/Xfermode.java
@@ -31,7 +31,11 @@ package android.graphics;
 public class Xfermode {
 
     protected void finalize() throws Throwable {
-        finalizer(native_instance);
+        try {
+            finalizer(native_instance);
+        } finally {
+            super.finalize();
+        }
     }
 
     private static native void finalizer(int native_instance);
-- 
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