add pipecanvas

samplecode/SampleApp.h

 /*
  * Copyright 2011 Skia
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef SampleApp_DEFINED
 #define SampleApp_DEFINED
 
 #include "SkOSMenu.h"
 #include "SkPath.h"
 #include "SkPicture.h"
 #include "SkPictureRecorder.h"
 #include "SkScalar.h"
+#include "SkStream.h"
 #include "SkTDArray.h"
 #include "SkTouchGesture.h"
 #include "SkWindow.h"
 #include "timer/Timer.h"
 
+#include "SkPipe.h"
+
 class GrContext;
 class GrRenderTarget;
 
 class SkCanvas;
 class SkData;
 class SkDocument;
 class SkEvent;
 class SkTypeface;
 class SkViewFactory;
 
@@ skipping 127 matching lines @@
                                  unsigned modi) override;
     bool onClick(Click* click) override;
     virtual Click* onFindClickHandler(SkScalar x, SkScalar y,
                                       unsigned modi) override;
 
 private:
     class DefaultDeviceManager;
 
     int fCurrIndex;
 
+    std::unique_ptr<SkDynamicMemoryWStream> fPipeStream;
+    SkPipeSerializer        fPipeSerializer;
+    SkPipeDeserializer      fPipeDeserializer;
+
     SkPictureRecorder fRecorder;
     SkAutoTDelete<SkCanvas> fFlagsFilterCanvas;
     SkPath fClipPath;
 
     SkTouchGesture fGesture;
     SkScalar fZoomLevel;
     SkScalar fZoomScale;
     SkVector fOffset;
 
     DeviceType fDeviceType;
@@ skipping 55 matching lines @@
     void postAnimatingEvent();
     int findByTitle(const char*);
     void listTitles();
     SkSize tileSize() const;
     bool sendAnimatePulse();
 
     typedef SkOSWindow INHERITED;
 };
 
 #endif