Enable flattening of SkRecordedDrawable

tests/FlattenDrawableTest.cpp

 /*
  * Copyright 2016 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkCanvas.h"
 #include "SkDrawable.h"
 #include "SkOnce.h"
@@ skipping 228 matching lines @@
 
     // Note that we can still recognize the generic drawable as an IntDrawable
     SkDrawable* generic = rootOut->drawable();
     REPORTER_ASSERT(r, !strcmp("IntDrawable", generic->getTypeName()));
     IntDrawable* integer = (IntDrawable*) generic;
     REPORTER_ASSERT(r, 1 == integer->a());
     REPORTER_ASSERT(r, 2 == integer->b());
     REPORTER_ASSERT(r, 3 == integer->c());
     REPORTER_ASSERT(r, 4 == integer->d());
 }
+
+DEF_TEST(FlattenRecordedDrawable, r) {
+    // Record a set of canvas draw commands
+    SkPictureRecorder recorder;
+    SkCanvas* canvas = recorder.beginRecording(1000.0f, 1000.0f);
+    canvas->drawPoint(42.0f, 17.0f, SK_ColorGREEN);
+    SkPaint paint;
+    paint.setColor(SK_ColorRED);
+    canvas->drawPaint(paint);
+    SkPaint textPaint;
+    textPaint.setColor(SK_ColorBLUE);
+    canvas->drawText("TEXT", 4, 467.0f, 100.0f, textPaint);
+
+    // Draw some drawables as well
+    SkAutoTUnref<SkDrawable> drawable(new IntDrawable(1, 2, 3, 4));
+    SkAutoTUnref<RootDrawable> root(new RootDrawable(5, 6, 7, 8, paint, 9, 10, 11, 12, drawable));
+    canvas->drawDrawable(root, 747.0f, 242.0f);
+    SkAutoTUnref<PaintDrawable> paintDrawable(new PaintDrawable(paint));
+    canvas->drawDrawable(paintDrawable, 500.0, 500.0f);
+    SkAutoTUnref<CompoundDrawable> comDrawable(new CompoundDrawable(13, 14, 15, 16, textPaint));
+    canvas->drawDrawable(comDrawable, 10.0f, 10.0f);
+
+    // Serialize the recorded drawable
+    sk_sp<SkDrawable> recordedDrawable = recorder.finishRecordingAsDrawable();
+    SkWriteBuffer writeBuffer;
+    writeBuffer.writeFlattenable(recordedDrawable.get());
+
+    // Copy the contents of the write buffer into a read buffer
+    sk_sp<SkData> data = SkData::MakeUninitialized(writeBuffer.bytesWritten());
+    writeBuffer.writeToMemory(data->writable_data());
+    SkReadBuffer readBuffer(data->data(), data->size());
+    register_test_drawables(readBuffer);
+
+    // Deserialize and verify the drawable
+    SkAutoTUnref<SkDrawable> out((SkDrawable*)
+            readBuffer.readFlattenable(SkFlattenable::kSkDrawable_Type));
+    REPORTER_ASSERT(r, out);
+    REPORTER_ASSERT(r, !strcmp("SkRecordedDrawable", out->getTypeName()));
+}