use globals to register custom effects

gm/imagefiltersbase.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"
 #include "SkCanvas.h"
 #include "SkColorFilter.h"
 #include "SkColorPriv.h"
 #include "SkShader.h"
 
 #include "SkBlurImageFilter.h"
 #include "SkColorFilterImageFilter.h"
 #include "SkDropShadowImageFilter.h"
 #include "SkTestImageFilters.h"
 
 class FailImageFilter : public SkImageFilter {
 public:
+    class Registrar {
+    public:
+        Registrar() {
+            SkFlattenable::Register("FailImageFilter",
+#ifdef SK_SUPPORT_LEGACY_DEEPFLATTENING
+                                    FailImageFilter::DeepCreateProc,
+#else
+                                    FailImageFilter::CreateProc,
+#endif
+                                    FailImageFilter::GetFlattenableType());
+        }
+    };
     static FailImageFilter* Create() {
         return SkNEW(FailImageFilter);
     }
 
     SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(FailImageFilter)
 
 protected:
-    FailImageFilter() : INHERITED(0, NULL) {
-        static bool gOnce;
-        if (!gOnce) {
-            gOnce = true;
-            SkFlattenable::Register("FailImageFilter", this->getFactory(),
-                                    this->GetFlattenableType());
-        }
-    }
+    FailImageFilter() : INHERITED(0, NULL) {}
 
     virtual bool onFilterImage(Proxy*, const SkBitmap& src, const Context&,
                                SkBitmap* result, SkIPoint* offset) const SK_OVERRIDE {
         return false;
     }
 
 #ifdef SK_SUPPORT_LEGACY_DEEPFLATTENING
     FailImageFilter(SkReadBuffer& buffer) : INHERITED(0, buffer) {}
 #endif
 
 private:
     typedef SkImageFilter INHERITED;
 };
 
+static FailImageFilter::Registrar gReg0;
+
 SkFlattenable* FailImageFilter::CreateProc(SkReadBuffer& buffer) {
     SK_IMAGEFILTER_UNFLATTEN_COMMON(common, 0);
     return FailImageFilter::Create();
 }
 
 class IdentityImageFilter : public SkImageFilter {
 public:
+    class Registrar {
+    public:
+        Registrar() {
+            SkFlattenable::Register("IdentityImageFilter",
+#ifdef SK_SUPPORT_LEGACY_DEEPFLATTENING
+                                    IdentityImageFilter::DeepCreateProc,
+#else
+                                    IdentityImageFilter::CreateProc,
+#endif
+                                    IdentityImageFilter::GetFlattenableType());
+        }
+    };
     static IdentityImageFilter* Create(SkImageFilter* input = NULL) {
         return SkNEW_ARGS(IdentityImageFilter, (input));
     }
 
     SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(IdentityImageFilter)
 protected:
-    IdentityImageFilter(SkImageFilter* input) : INHERITED(1, &input) {
-        static bool gOnce;
-        if (!gOnce) {
-            gOnce = true;
-            SkFlattenable::Register("IdentityImageFilter", this->getFactory(),
-                                    this->GetFlattenableType());
-        }
-    }
+    IdentityImageFilter(SkImageFilter* input) : INHERITED(1, &input) {}
 
     virtual bool onFilterImage(Proxy*, const SkBitmap& src, const Context&,
                                SkBitmap* result, SkIPoint* offset) const SK_OVERRIDE {
         *result = src;
         offset->set(0, 0);
         return true;
     }
 
 #ifdef SK_SUPPORT_LEGACY_DEEPFLATTENING
     IdentityImageFilter(SkReadBuffer& buffer) : INHERITED(1, buffer) {}
 #endif
 
 private:
     typedef SkImageFilter INHERITED;
 };
 
+static IdentityImageFilter::Registrar gReg1;
+
 SkFlattenable* IdentityImageFilter::CreateProc(SkReadBuffer& buffer) {
     SK_IMAGEFILTER_UNFLATTEN_COMMON(common, 1);
     return IdentityImageFilter::Create(common.getInput(0));
 }
 
 ///////////////////////////////////////////////////////////////////////////////
 
 static void draw_paint(SkCanvas* canvas, const SkRect& r, SkImageFilter* imf) {
     SkPaint paint;
     paint.setImageFilter(imf);
@@ skipping 148 matching lines @@
     }
 
 private:
     typedef GM INHERITED;
 };
 
 ///////////////////////////////////////////////////////////////////////////////
 
 static skiagm::GM* MyFactory(void*) { return new ImageFiltersBaseGM; }
 static skiagm::GMRegistry reg(MyFactory);