1 files changed, 97 insertions, 0 deletions
diff --git a/Source/WebKit/android/jni/ViewStateSerializer.cpp b/Source/WebKit/android/jni/ViewStateSerializer.cpp
new file mode 100644
index 0000000..c780e07
--- /dev/null
+++ b/Source/WebKit/android/jni/ViewStateSerializer.cpp
@@ -0,0 +1,97 @@
+/*
+ * Copyright 2011, The Android Open Source Project
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *  * Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *  * Redistributions 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.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
+ * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "config.h"
+
+#include "BaseLayerAndroid.h"
+#include "CreateJavaOutputStreamAdaptor.h"
+#include "PictureSet.h"
+#include "SkPicture.h"
+
+#include <JNIUtility.h>
+#include <JNIHelp.h>
+#include <jni.h>
+
+namespace android {
+
+static bool nativeSerializeViewState(JNIEnv* env, jobject, jint jbaseLayer,
+                                     jobject jstream, jbyteArray jstorage)
+{
+    BaseLayerAndroid* baseLayer = (BaseLayerAndroid*) jbaseLayer;
+    if (!baseLayer)
+        return false;
+
+    SkWStream *stream = CreateJavaOutputStreamAdaptor(env, jstream, jstorage);
+#if USE(ACCELERATED_COMPOSITING)
+    stream->write32(baseLayer->getBackgroundColor().rgb());
+#else
+    stream->write32(0);
+#endif
+    SkPicture picture;
+    PictureSet* content = baseLayer->content();
+    baseLayer->drawCanvas(picture.beginRecording(content->width(), content->height(),
+            SkPicture::kUsePathBoundsForClip_RecordingFlag));
+    picture.endRecording();
+    if (!stream)
+        return false;
+    picture.serialize(stream);
+    delete stream;
+    return true;
+}
+
+static BaseLayerAndroid* nativeDeserializeViewState(JNIEnv* env, jobject, jobject jstream,
+                                      jbyteArray jstorage)
+{
+    SkStream* stream = CreateJavaInputStreamAdaptor(env, jstream, jstorage);
+    if (!stream)
+        return 0;
+    BaseLayerAndroid* layer = new BaseLayerAndroid();
+    Color color = stream->readU32();
+#if USE(ACCELERATED_COMPOSITING)
+    layer->setBackgroundColor(color);
+#endif
+    SkPicture* picture = new SkPicture(stream);
+    delete stream;
+    layer->setContent(picture);
+    return layer;
+}
+
+/*
+ * JNI registration
+ */
+static JNINativeMethod gSerializerMethods[] = {
+    { "nativeSerializeViewState", "(ILjava/io/OutputStream;[B)Z",
+        (void*) nativeSerializeViewState },
+    { "nativeDeserializeViewState", "(Ljava/io/InputStream;[B)I",
+        (void*) nativeDeserializeViewState },
+};
+
+int registerViewStateSerializer(JNIEnv* env)
+{
+    return jniRegisterNativeMethods(env, "android/webkit/ViewStateSerializer",
+                                    gSerializerMethods, NELEM(gSerializerMethods));
+}
+
+}