add peekPixels to SkCanvas and SkSurface

gm/bitmapcopy.cpp

 
 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 #include "gm.h"
 
 namespace skiagm {
@@ skipping 44 matching lines @@
     virtual SkString onShortName() {
         return SkString("bitmapcopy");
     }
 
     virtual SkISize onISize() {
         return make_isize(540, 330);
     }
 
     virtual void onDraw(SkCanvas* canvas) {
         SkPaint paint;
-        SkScalar horizMargin(SkIntToScalar(10));
-        SkScalar vertMargin(SkIntToScalar(10));
+        SkScalar horizMargin = 10;
+        SkScalar vertMargin = 10;
 
-        SkBitmapDevice devTmp(SkBitmap::kARGB_8888_Config, 40, 40, false);
-        SkCanvas canvasTmp(&devTmp);
+        SkBitmap src;
+        src.allocN32Pixels(40, 40);
+        SkCanvas canvasTmp(src);
 
         draw_checks(&canvasTmp, 40, 40);
-        SkBitmap src = canvasTmp.getTopDevice()->accessBitmap(false);
 
         for (unsigned i = 0; i < NUM_CONFIGS; ++i) {
             if (!src.deepCopyTo(&fDst[i], gConfigs[i])) {
                 src.copyTo(&fDst[i], gConfigs[i]);
             }
         }
 
         canvas->clear(0xFFDDDDDD);
         paint.setAntiAlias(true);
         SkScalar width = SkIntToScalar(40);
@@ skipping 38 matching lines @@
     typedef GM INHERITED;
 };
 
 //////////////////////////////////////////////////////////////////////////////
 
 #ifndef SK_BUILD_FOR_ANDROID
 static GM* MyFactory(void*) { return new BitmapCopyGM; }
 static GMRegistry reg(MyFactory);
 #endif
 }