add gradients and drawPaint to lua

samplecode/SampleLua.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 "SampleCode.h"
 #include "SkView.h"
 #include "SkLua.h"
 #include "SkCanvas.h"
 #include "Resources.h"
 #include "SkData.h"
 
 extern "C" {
 #include "lua.h"
 #include "lualib.h"
 #include "lauxlib.h"
 }
 
-#define LUA_FILENAME    "test.lua"
-//#define LUA_FILENAME    "slides.lua"
+//#define LUA_FILENAME    "test.lua"
+#define LUA_FILENAME    "slides.lua"
 
 static const char gDrawName[] = "onDrawContent";
 static const char gClickName[] = "onClickHandler";
 static const char gUnicharName[] = "onCharHandler";
 
 static const char gMissingCode[] = ""
     "local paint = Sk.newPaint()"
     "paint:setAntiAlias(true)"
     "paint:setTextSize(30)"
     ""
@@ skipping 115 matching lines @@
 private:
     SkLua* fLua;
 
     typedef SampleView INHERITED;
 };
 
 //////////////////////////////////////////////////////////////////////////////
 
 static SkView* MyFactory() { return new LuaView; }
 static SkViewRegister reg(MyFactory);