Factory methods for heap-allocated SkPathEffect and SkXfermode objects.

gm/patheffects.cpp

 /*
  * Copyright 2012 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"
 #include "SkCanvas.h"
 #include "SkPaint.h"
 #include "Sk1DPathEffect.h"
 #include "Sk2DPathEffect.h"
 #include "SkCornerPathEffect.h"
 #include "SkDashPathEffect.h"
 #include "SkDiscretePathEffect.h"
 
 namespace skiagm {
 
 static void compose_pe(SkPaint* paint) {
     SkPathEffect* pe = paint->getPathEffect();
-    SkPathEffect* corner = new SkCornerPathEffect(25);
+    SkPathEffect* corner = SkCornerPathEffect::Create(25);
     SkPathEffect* compose;
     if (pe) {
-        compose = new SkComposePathEffect(pe, corner);
+        compose = SkComposePathEffect::Create(pe, corner);
         corner->unref();
     } else {
         compose = corner;
     }
     paint->setPathEffect(compose)->unref();
 }
 
 static void hair_pe(SkPaint* paint) {
     paint->setStrokeWidth(0);
 }
 
 static void hair2_pe(SkPaint* paint) {
     paint->setStrokeWidth(0);
     compose_pe(paint);
 }
 
 static void stroke_pe(SkPaint* paint) {
     paint->setStrokeWidth(12);
     compose_pe(paint);
 }
 
 static void dash_pe(SkPaint* paint) {
     SkScalar inter[] = { 20, 10, 10, 10 };
     paint->setStrokeWidth(12);
-    paint->setPathEffect(new SkDashPathEffect(inter, SK_ARRAY_COUNT(inter),
-                                              0))->unref();
+    paint->setPathEffect(SkDashPathEffect::Create(inter, SK_ARRAY_COUNT(inter),
+                                                  0))->unref();
     compose_pe(paint);
 }
 
 static const int gXY[] = {
 4, 0, 0, -4, 8, -4, 12, 0, 8, 4, 0, 4
 };
 
 static void scale(SkPath* path, SkScalar scale) {
     SkMatrix m;
     m.setScale(scale, scale);
     path->transform(m);
 }
 
 static void one_d_pe(SkPaint* paint) {
     SkPath  path;
     path.moveTo(SkIntToScalar(gXY[0]), SkIntToScalar(gXY[1]));
     for (unsigned i = 2; i < SK_ARRAY_COUNT(gXY); i += 2)
         path.lineTo(SkIntToScalar(gXY[i]), SkIntToScalar(gXY[i+1]));
     path.close();
     path.offset(SkIntToScalar(-6), 0);
     scale(&path, 1.5f);
 
-    paint->setPathEffect(new SkPath1DPathEffect(path, SkIntToScalar(21), 0,
+    paint->setPathEffect(SkPath1DPathEffect::Create(path, SkIntToScalar(21), 0,
                                 SkPath1DPathEffect::kRotate_Style))->unref();
     compose_pe(paint);
 }
 
 typedef void (*PE_Proc)(SkPaint*);
 static const PE_Proc gPE[] = { hair_pe, hair2_pe, stroke_pe, dash_pe, one_d_pe };
 
 static void fill_pe(SkPaint* paint) {
     paint->setStyle(SkPaint::kFill_Style);
     paint->setPathEffect(NULL);
 }
 
 static void discrete_pe(SkPaint* paint) {
-    paint->setPathEffect(new SkDiscretePathEffect(10, 4))->unref();
+    paint->setPathEffect(SkDiscretePathEffect::Create(10, 4))->unref();
 }
 
 static SkPathEffect* MakeTileEffect() {
     SkMatrix m;
     m.setScale(SkIntToScalar(12), SkIntToScalar(12));
 
     SkPath path;
     path.addCircle(0, 0, SkIntToScalar(5));
 
-    return new SkPath2DPathEffect(m, path);
+    return SkPath2DPathEffect::Create(m, path);
 }
 
 static void tile_pe(SkPaint* paint) {
     paint->setPathEffect(MakeTileEffect())->unref();
 }
 
 static const PE_Proc gPE2[] = { fill_pe, discrete_pe, tile_pe };
 
 class PathEffectGM : public GM {
 public:
@@ skipping 54 matching lines @@
 private:
     typedef GM INHERITED;
 };
 
 //////////////////////////////////////////////////////////////////////////////
 
 static GM* PathEffectFactory(void*) { return new PathEffectGM; }
 static GMRegistry regPathEffect(PathEffectFactory);
 
 }