add a simple ascii-art debug thing for AA clips

src/core/SkAAClip.h

 
 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef SkAAClip_DEFINED
 #define SkAAClip_DEFINED
@@ skipping 57 matching lines @@
     const uint8_t* findRow(int y, int* lastYForRow = NULL) const;
     const uint8_t* findX(const uint8_t data[], int x, int* initialCount = NULL) const;
 
     class Iter;
     struct RunHead;
     struct YOffset;
     class Builder;
 
 #ifdef SK_DEBUG
     void validate() const;
+    void debug(bool compress_y=false) const;
 #else
     void validate() const {}
+    void debug(bool compress_y=false) const {}
 #endif
 
 private:
     SkIRect  fBounds;
     RunHead* fRunHead;
 
     void freeRuns();
     bool trimBounds();
     bool trimTopBottom();
     bool trimLeftRight();
@@ skipping 37 matching lines @@
     enum {
         kSize = 32 * 32
     };
     SkAutoSMalloc<kSize> fGrayMaskScratch;  // used for blitMask
     void* fScanlineScratch;  // enough for a mask at 32bit, or runs+aa
 
     void ensureRunsAndAA();
 };
 
 #endif