clean up printf usage in gm

gm/downsamplebitmap.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 "gm.h"
 #include "SkGradientShader.h"
 
@@ skipping 14 matching lines @@
     bool        fBitmapMade;
     SkPaint::FilterLevel fFilterLevel;
 
     DownsampleBitmapGM(SkPaint::FilterLevel filterLevel)
         : fFilterLevel(filterLevel)
     {
         this->setBGColor(0xFFDDDDDD);
         fBitmapMade = false;
     }
 
-    void setName(const char name[]) {
-        fName.set(name);
-    }
-    
-    const char *filterLevelToString() {
-        switch(fFilterLevel) {
-            case SkPaint::kNone_FilterLevel:
-                return "none";
-            case SkPaint::kLow_FilterLevel:
-                return "low";
-            case SkPaint::kMedium_FilterLevel:
-                return "medium";
-            case SkPaint::kHigh_FilterLevel:
-                return "high";
-            default:
-                return "unknown";
-        }
+    const char* filterLevelToString() {
+        static const char *filterLevelNames[] = {
+            "none", "low", "medium", "high"
+        };
+        return filterLevelNames[fFilterLevel];
     }
 
 protected:
     virtual SkString onShortName() SK_OVERRIDE {
         return fName;
     }
 
     virtual SkISize onISize() SK_OVERRIDE {
         make_bitmap_wrapper();
         return SkISize::Make(4 * fBM.width(), fBM.height());
@@ skipping 35 matching lines @@
 
 private:
     typedef skiagm::GM INHERITED;
 };
 
 class DownsampleBitmapTextGM: public DownsampleBitmapGM {
   public:
       DownsampleBitmapTextGM(float textSize, SkPaint::FilterLevel filterLevel)
       : INHERITED(filterLevel), fTextSize(textSize)
         {
-            char name[1024];
-            sprintf(name, "downsamplebitmap_text_%s_%.2fpt", this->filterLevelToString(), fTextSize);
-            setName(name);
+            fName.printf("downsamplebitmap_text_%s_%.2fpt", this->filterLevelToString(), fTextSize);
         }
 
   protected:
       float fTextSize;
 
       virtual void make_bitmap() SK_OVERRIDE {
           fBM.setConfig(SkBitmap::kARGB_8888_Config, int(fTextSize * 8), int(fTextSize * 6));
           fBM.allocPixels();
           SkCanvas canvas(fBM);
           canvas.drawColor(SK_ColorWHITE);
@@ skipping 14 matching lines @@
       }
   private:
       typedef DownsampleBitmapGM INHERITED;
 };
 
 class DownsampleBitmapCheckerboardGM: public DownsampleBitmapGM {
   public:
       DownsampleBitmapCheckerboardGM(int size, int numChecks, SkPaint::FilterLevel filterLevel)
       : INHERITED(filterLevel), fSize(size), fNumChecks(numChecks)
         {
-            char name[1024];
-            sprintf(name, "downsamplebitmap_checkerboard_%s_%d_%d", this->filterLevelToString(), fSize, fNumChecks);
-            setName(name);
+            fName.printf("downsamplebitmap_checkerboard_%s_%d_%d", this->filterLevelToString(), fSize, fNumChecks);
         }
 
   protected:
       int fSize;
       int fNumChecks;
 
       virtual void make_bitmap() SK_OVERRIDE {
           fBM.setConfig(SkBitmap::kARGB_8888_Config, fSize, fSize);
           fBM.allocPixels();
           SkAutoLockPixels lock(fBM);
@@ skipping 12 matching lines @@
       }
   private:
       typedef DownsampleBitmapGM INHERITED;
 };
 
 class DownsampleBitmapImageGM: public DownsampleBitmapGM {
   public:
       DownsampleBitmapImageGM(const char filename[], SkPaint::FilterLevel filterLevel)
       : INHERITED(filterLevel), fFilename(filename)
         {
-            char name[1024];
-            sprintf(name, "downsamplebitmap_image_%s_%s", this->filterLevelToString(), filename);
-            setName(name);
+            fName.printf("downsamplebitmap_image_%s_%s", this->filterLevelToString(), filename);
         }
 
   protected:
       SkString fFilename;
       int fSize;
 
       virtual void make_bitmap() SK_OVERRIDE {
           SkString path(skiagm::GM::gResourcePath);
           path.append("/");
           path.append(fFilename);
@@ skipping 29 matching lines @@
 DEF_GM( return new DownsampleBitmapCheckerboardGM(512,256, SkPaint::kMedium_FilterLevel); )
 DEF_GM( return new DownsampleBitmapImageGM("mandrill_512.png", SkPaint::kMedium_FilterLevel); )
 
 DEF_GM( return new DownsampleBitmapTextGM(72, SkPaint::kLow_FilterLevel); )
 DEF_GM( return new DownsampleBitmapCheckerboardGM(512,256, SkPaint::kLow_FilterLevel); )
 DEF_GM( return new DownsampleBitmapImageGM("mandrill_512.png", SkPaint::kLow_FilterLevel); )
 
 DEF_GM( return new DownsampleBitmapTextGM(72, SkPaint::kNone_FilterLevel); )
 DEF_GM( return new DownsampleBitmapCheckerboardGM(512,256, SkPaint::kNone_FilterLevel); )
 DEF_GM( return new DownsampleBitmapImageGM("mandrill_512.png", SkPaint::kNone_FilterLevel); )