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

gm/gm.h

 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef skiagm_DEFINED
 #define skiagm_DEFINED
 
 #include "SkBitmap.h"
 #include "SkCanvas.h"
 #include "SkPaint.h"
 #include "SkSize.h"
 #include "SkString.h"
 #include "SkTRegistry.h"
 #include "sk_tool_utils.h"
 
+class SkAnimTimer;
+
 #if SK_SUPPORT_GPU
 #include "GrContext.h"
 #endif
 
 #define DEF_GM(code) \
     static skiagm::GM*          SK_MACRO_APPEND_LINE(F_)(void*) { code; } \
     static skiagm::GMRegistry   SK_MACRO_APPEND_LINE(R_)(SK_MACRO_APPEND_LINE(F_));
 
 // See colorwheel.cpp for example usage.
 #define DEF_SIMPLE_GM(NAME, CANVAS, W, H)                               \
@@ skipping 56 matching lines @@
         bool isCanvasDeferred() const { return fCanvasIsDeferred; }
         void setCanvasIsDeferred(bool isDeferred) {
             fCanvasIsDeferred = isDeferred;
         }
 
         const SkMatrix& getStarterMatrix() { return fStarterMatrix; }
         void setStarterMatrix(const SkMatrix& matrix) {
             fStarterMatrix = matrix;
         }
 
-        bool animatePulse(SkMSec curr, SkMSec prev);
+        bool animate(const SkAnimTimer&);
 
     protected:
         /** draws a standard message that the GM is only intended to be used with the GPU.*/
         void drawGpuOnlyMessage(SkCanvas*);
         virtual void onOnceBeforeDraw() {}
         virtual void onDraw(SkCanvas*) = 0;
         virtual void onDrawBackground(SkCanvas*);
         virtual SkISize onISize() = 0;
         virtual SkString onShortName() = 0;
 
-        virtual bool onAnimatePulse(SkMSec curr, SkMSec prev) { return false; }
+        virtual bool onAnimate(const SkAnimTimer&) { return false; }
         virtual SkMatrix onGetInitialTransform() const { return SkMatrix::I(); }
 
     private:
         Mode     fMode;
         SkString fShortName;
         SkColor  fBGColor;
         bool     fCanvasIsDeferred; // work-around problem in srcmode.cpp
         bool     fHaveCalledOnceBeforeDraw;
         SkMatrix fStarterMatrix;
     };
@@ skipping 11 matching lines @@
         SkISize onISize() SK_OVERRIDE;
         SkString onShortName() SK_OVERRIDE;
     private:
         SkString fName;
         void (*fDrawProc)(SkCanvas*);
         SkISize fSize;
     };
 }
 
 #endif