1 files changed, 119 insertions, 0 deletions
diff --git a/libs/hwui/jni/Picture.cpp b/libs/hwui/jni/Picture.cpp
new file mode 100644
index 000000000000..d1b952130e88
--- /dev/null
+++ b/libs/hwui/jni/Picture.cpp
@@ -0,0 +1,119 @@
+/*
+ * Copyright (C) 2014 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Picture.h"
+#include "SkStream.h"
+
+#include <memory>
+#include <hwui/Canvas.h>
+
+namespace android {
+
+Picture::Picture(const Picture* src) {
+    if (NULL != src) {
+        mWidth = src->width();
+        mHeight = src->height();
+        if (NULL != src->mPicture.get()) {
+            mPicture = src->mPicture;
+        } else if (NULL != src->mRecorder.get()) {
+            mPicture = src->makePartialCopy();
+        }
+    } else {
+        mWidth = 0;
+        mHeight = 0;
+    }
+}
+
+Picture::Picture(sk_sp<SkPicture>&& src) {
+    mPicture = std::move(src);
+    mWidth = 0;
+    mHeight = 0;
+}
+
+Canvas* Picture::beginRecording(int width, int height) {
+    mPicture.reset(NULL);
+    mRecorder.reset(new SkPictureRecorder);
+    mWidth = width;
+    mHeight = height;
+    SkCanvas* canvas = mRecorder->beginRecording(SkIntToScalar(width), SkIntToScalar(height));
+    return Canvas::create_canvas(canvas);
+}
+
+void Picture::endRecording() {
+    if (NULL != mRecorder.get()) {
+        mPicture = mRecorder->finishRecordingAsPicture();
+        mRecorder.reset(NULL);
+    }
+}
+
+int Picture::width() const {
+    return mWidth;
+}
+
+int Picture::height() const {
+    return mHeight;
+}
+
+Picture* Picture::CreateFromStream(SkStream* stream) {
+    Picture* newPict = new Picture;
+
+    sk_sp<SkPicture> skPicture = SkPicture::MakeFromStream(stream);
+    if (NULL != skPicture) {
+        newPict->mPicture = skPicture;
+
+        const SkIRect cullRect = skPicture->cullRect().roundOut();
+        newPict->mWidth = cullRect.width();
+        newPict->mHeight = cullRect.height();
+    }
+
+    return newPict;
+}
+
+void Picture::serialize(SkWStream* stream) const {
+    if (NULL != mRecorder.get()) {
+        this->makePartialCopy()->serialize(stream);
+    } else if (NULL != mPicture.get()) {
+        mPicture->serialize(stream);
+    } else {
+        // serialize "empty" picture
+        SkPictureRecorder recorder;
+        recorder.beginRecording(0, 0);
+        recorder.finishRecordingAsPicture()->serialize(stream);
+    }
+}
+
+void Picture::draw(Canvas* canvas) {
+    if (NULL != mRecorder.get()) {
+        this->endRecording();
+        SkASSERT(NULL != mPicture.get());
+    }
+
+    if (mPicture) {
+        canvas->drawPicture(*mPicture);
+    }
+}
+
+sk_sp<SkPicture> Picture::makePartialCopy() const {
+    SkASSERT(NULL != mRecorder.get());
+
+    SkPictureRecorder reRecorder;
+
+    SkCanvas* canvas = reRecorder.beginRecording(mWidth, mHeight, NULL, 0);
+    mRecorder->partialReplay(canvas);
+    return reRecorder.finishRecordingAsPicture();
+}
+
+}; // namespace android