srand() + rand() -> SkRandom

gm/imageblur.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 "SkBlurImageFilter.h"
+#include "SkRandom.h"
 
 #define WIDTH 500
 #define HEIGHT 500
 
 namespace skiagm {
 
 class ImageBlurGM : public GM {
 public:
     ImageBlurGM() {
         this->setBGColor(0xFF000000);
     }
 
 protected:
     virtual SkString onShortName() {
         return SkString("imageblur");
     }
 
     virtual SkISize onISize() {
         return make_isize(WIDTH, HEIGHT);
     }
 
     virtual void onDraw(SkCanvas* canvas) {
         SkPaint paint;
         paint.setImageFilter(new SkBlurImageFilter(24.0f, 0.0f))->unref();
         canvas->saveLayer(NULL, &paint);
         const char* str = "The quick brown fox jumped over the lazy dog.";
-        srand(1234);
+
+        SkRandom rand;
         SkPaint textPaint;
         textPaint.setAntiAlias(true);
         for (int i = 0; i < 25; ++i) {
-            int x = rand() % WIDTH;
-            int y = rand() % HEIGHT;
-            textPaint.setColor(rand() % 0x1000000 | 0xFF000000);
-            textPaint.setTextSize(SkIntToScalar(rand() % 300));
+            int x = rand.nextULessThan(WIDTH);
+            int y = rand.nextULessThan(HEIGHT);
+            textPaint.setColor(rand.nextBits(24) | 0xFF000000);
+            textPaint.setTextSize(rand.nextULessThan(300));
             canvas->drawText(str, strlen(str), SkIntToScalar(x),
                              SkIntToScalar(y), textPaint);
         }
         canvas->restore();
     }
 
 private:
     typedef GM INHERITED;
 };
 
 //////////////////////////////////////////////////////////////////////////////
 
 static GM* MyFactory(void*) { return new ImageBlurGM; }
 static GMRegistry reg(MyFactory);
 
 }