Factory methods for heap-allocated SkPathEffect and SkXfermode objects.

samplecode/SamplePathUtils.cpp

 /*
  * Copyright 2013 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SampleCode.h"
 
 #include "SkCanvas.h"
@@ skipping 47 matching lines @@
             SampleCode::TitleR(evt, "PathUtils");
             return true;
         }
         return this->INHERITED::onQuery(evt);
     }
 
     /////////////////////////////////////////////////////////////
 
     virtual void onDrawContent(SkCanvas* canvas) {
         SkScalar intervals[8] = { .5f, .3f, .5f, .3f, .5f, .3f, .5f, .3f };
-        SkDashPathEffect dash(intervals, 2, fPhase);
-        SkCornerPathEffect corner(.25f);
-        SkComposePathEffect compose(&dash, &corner);
+        SkAutoTUnref<SkDashPathEffect> dash(SkDashPathEffect::Create(intervals, 2, fPhase));
+        SkAutoTUnref<SkCornerPathEffect> corner(SkCornerPathEffect::Create(.25f));
+        SkAutoTUnref<SkComposePathEffect> compose(SkComposePathEffect::Create(dash, corner));
 
         SkPaint outlinePaint;
         outlinePaint.setAntiAlias(true);  // dashed paint for bitmap
         outlinePaint.setStyle(SkPaint::kStroke_Style);
-        outlinePaint.setPathEffect(&compose);
+        outlinePaint.setPathEffect(compose);
 
         canvas->scale(10.0f, 10.0f);  // scales up
 
         for (int i = 0; i < fNumBits; ++i) {
             canvas->save();
             for (size_t j = 0; j < SK_ARRAY_COUNT(gBitsToPath_fns); ++j) {
                 SkPath path;
                 gBitsToPath_fns[j](&path, (char*) &gBits[i], fW, fH, fRowBytes);
 
                 //draw skPath and outline
@@ skipping 13 matching lines @@
 
 private:
     typedef SkView INHERITED;
 };
 
 //////////////////////////////////////////////////////////////////////////////
 
 static SkView* MyFactory() { return new SamplePathUtils; }
 static SkViewRegister reg(MyFactory)
 ;