split SkPictureRecorder out of SkPicture

samplecode/SampleTiling.cpp

Index: samplecode/SampleTiling.cpp
===================================================================
--- samplecode/SampleTiling.cpp	(revision 13963)
+++ samplecode/SampleTiling.cpp	(working copy)
@@ -62,21 +62,19 @@
 static const int gHeight = 32;
 
 class TilingView : public SampleView {
-    SkPicture*          fTextPicture;
-    SkBlurDrawLooper    fLooper;
+    SkAutoTUnref<SkPicture> fTextPicture;
+    SkBlurDrawLooper        fLooper;
 public:
     TilingView()
             : fLooper(0x88000000,
                       SkBlurMask::ConvertRadiusToSigma(SkIntToScalar(1)),
                       SkIntToScalar(2), SkIntToScalar(2)) {
-        fTextPicture = new SkPicture();
         for (size_t i = 0; i < SK_ARRAY_COUNT(gColorTypes); i++) {
             makebm(&fTexture[i], gColorTypes[i], gWidth, gHeight);
         }
     }
 
-    ~TilingView() {
-        fTextPicture->unref();
+    virtual ~TilingView() {
     }
 
     SkBitmap    fTexture[SK_ARRAY_COUNT(gColorTypes)];
@@ -105,12 +103,13 @@
         SkScalar y = SkIntToScalar(24);
         SkScalar x = SkIntToScalar(10);
 
+        SkPictureRecorder recorder;
         SkCanvas* textCanvas = NULL;
         if (fTextPicture->width() == 0) {
-            textCanvas = fTextPicture->beginRecording(1000, 1000);
+            textCanvas = recorder.beginRecording(1000, 1000);
         }
 
-        if (textCanvas) {
+        if (NULL != textCanvas) {
             for (size_t kx = 0; kx < SK_ARRAY_COUNT(gModes); kx++) {
                 for (size_t ky = 0; ky < SK_ARRAY_COUNT(gModes); ky++) {
                     SkPaint p;
@@ -160,6 +159,8 @@
             }
         }
 
+        fTextPicture.reset(recorder.endRecording());
+
         canvas->drawPicture(*fTextPicture);
     }