add SkAnimTimer, SPACE = pause/resume, ESP = stop

samplecode/SampleAnimBlur.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 "SampleCode.h"
+#include "SkAnimTimer.h"
 #include "SkBlurMaskFilter.h"
 #include "SkColorPriv.h"
 #include "SkCanvas.h"
 #include "SkRandom.h"
 
-SkScalar get_anim_sin(SkMSec time, SkScalar amplitude, SkScalar periodInSec, SkScalar phaseInSec) {
+SkScalar get_anim_sin(double secs, SkScalar amplitude, SkScalar periodInSec, SkScalar phaseInSec) {
     if (!periodInSec) {
         return 0;
     }
-    double t = (double)time / 1000.0 + phaseInSec;
+    double t = secs + phaseInSec;
     t *= SkScalarToFloat(2 * SK_ScalarPI) / periodInSec;
     amplitude = SK_ScalarHalf * amplitude;
     return amplitude * SkDoubleToScalar(sin(t)) + amplitude;
 }
 
 class AnimBlurView : public SampleView {
 public:
     AnimBlurView() : fBlurSigma(0), fCircleRadius(100) {}
 
 protected:
@@ skipping 22 matching lines @@
                                        SkBlurMaskFilter::kHighQuality_BlurFlag);
             SkPaint paint;
             SkSafeUnref(paint.setMaskFilter(mf));
             paint.setColor(random.nextU() | 0xff000000);
             canvas->drawCircle(200 * SK_Scalar1 + 400 * (i % 2) * SK_Scalar1,
                                200 * SK_Scalar1 + i / 2 * 400 * SK_Scalar1,
                                fCircleRadius, paint);
         }
     }
 
-    bool onAnimatePulse(SkMSec curr, SkMSec prev) SK_OVERRIDE {
-        fBlurSigma = get_anim_sin(curr, 100, 4, 5);
-        fCircleRadius = 3 + get_anim_sin(curr, 150, 25, 3);
+    bool onAnimate(const SkAnimTimer& timer) SK_OVERRIDE {
+        fBlurSigma = get_anim_sin(timer.secs(), 100, 4, 5);
+        fCircleRadius = 3 + get_anim_sin(timer.secs(), 150, 25, 3);
         return true;
     }
 
 private:
     SkScalar fBlurSigma, fCircleRadius;
 
     typedef SampleView INHERITED;
 };
 
 //////////////////////////////////////////////////////////////////////////////
 
 static SkView* MyFactory() { return new AnimBlurView; }
 static SkViewRegister reg(MyFactory);