Add toString methods to SkImageFilter-derived classes

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"
@@ skipping 12 matching lines @@
         Registrar() {
             SkFlattenable::Register("FailImageFilter",
                                     FailImageFilter::CreateProc,
                                     FailImageFilter::GetFlattenableType());
         }
     };
     static FailImageFilter* Create() {
         return SkNEW(FailImageFilter);
     }
 
+    SK_TO_STRING_OVERRIDE()
     SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(FailImageFilter)
 
 protected:
     FailImageFilter() : INHERITED(0, NULL) {}
 
     virtual bool onFilterImage(Proxy*, const SkBitmap& src, const Context&,
                                SkBitmap* result, SkIPoint* offset) const SK_OVERRIDE {
         return false;
     }
 
 private:
     typedef SkImageFilter INHERITED;
 };
 
 static FailImageFilter::Registrar gReg0;
 
 SkFlattenable* FailImageFilter::CreateProc(SkReadBuffer& buffer) {
     SK_IMAGEFILTER_UNFLATTEN_COMMON(common, 0);
     return FailImageFilter::Create();
 }
 
+#ifndef SK_IGNORE_TO_STRING
+void FailImageFilter::toString(SkString* str) const {
+    str->appendf("FailImageFilter: (");
+    str->append(")");
+}
+#endif
+
 class IdentityImageFilter : public SkImageFilter {
 public:
     class Registrar {
     public:
         Registrar() {
             SkFlattenable::Register("IdentityImageFilter",
                                     IdentityImageFilter::CreateProc,
                                     IdentityImageFilter::GetFlattenableType());
         }
     };
     static IdentityImageFilter* Create(SkImageFilter* input = NULL) {
         return SkNEW_ARGS(IdentityImageFilter, (input));
     }
 
+    SK_TO_STRING_OVERRIDE()
     SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(IdentityImageFilter)
 protected:
     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;
     }
 
 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));
 }
 
+#ifndef SK_IGNORE_TO_STRING
+void IdentityImageFilter::toString(SkString* str) const {
+    str->appendf("IdentityImageFilter: (");
+    str->append(")");
+}
+#endif
+
 ///////////////////////////////////////////////////////////////////////////////
 
 static void draw_paint(SkCanvas* canvas, const SkRect& r, SkImageFilter* imf) {
     SkPaint paint;
     paint.setImageFilter(imf);
     paint.setColor(SK_ColorGREEN);
     canvas->save();
     canvas->clipRect(r);
     canvas->drawPaint(paint);
     canvas->restore();
@@ skipping 144 matching lines @@
     }
 
 private:
     typedef GM INHERITED;
 };
 
 ///////////////////////////////////////////////////////////////////////////////
 
 static skiagm::GM* MyFactory(void*) { return new ImageFiltersBaseGM; }
 static skiagm::GMRegistry reg(MyFactory);