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      1 /*
      2  * Copyright 2013 Google Inc.
      3  *
      4  * Use of this source code is governed by a BSD-style license that can be
      5  * found in the LICENSE file.
      6  */
      7 
      8 #ifndef SkLua_DEFINED
      9 #define SkLua_DEFINED
     10 
     11 #include "SkColor.h"
     12 #include "SkScalar.h"
     13 #include "SkString.h"
     14 
     15 struct lua_State;
     16 
     17 class SkCanvas;
     18 class SkMatrix;
     19 class SkPaint;
     20 class SkPath;
     21 struct SkRect;
     22 class SkRRect;
     23 
     24 #define SkScalarToLua(x)    SkScalarToDouble(x)
     25 #define SkLuaToScalar(x)    SkDoubleToScalar(x)
     26 
     27 class SkLua {
     28 public:
     29     static void Load(lua_State*);
     30 
     31     SkLua(const char termCode[] = NULL);    // creates a new L, will close it
     32     SkLua(lua_State*);                      // uses L, will not close it
     33     ~SkLua();
     34 
     35     lua_State* get() const { return fL; }
     36     lua_State* operator*() const { return fL; }
     37     lua_State* operator->() const { return fL; }
     38 
     39     bool runCode(const char code[]);
     40     bool runCode(const void* code, size_t size);
     41 
     42     void pushBool(bool, const char tableKey[] = NULL);
     43     void pushString(const char[], const char tableKey[] = NULL);
     44     void pushString(const char[], size_t len, const char tableKey[] = NULL);
     45     void pushString(const SkString&, const char tableKey[] = NULL);
     46     void pushArrayU16(const uint16_t[], int count, const char tableKey[] = NULL);
     47     void pushColor(SkColor, const char tableKey[] = NULL);
     48     void pushU32(uint32_t, const char tableKey[] = NULL);
     49     void pushScalar(SkScalar, const char tableKey[] = NULL);
     50     void pushRect(const SkRect&, const char tableKey[] = NULL);
     51     void pushRRect(const SkRRect&, const char tableKey[] = NULL);
     52     void pushMatrix(const SkMatrix&, const char tableKey[] = NULL);
     53     void pushPaint(const SkPaint&, const char tableKey[] = NULL);
     54     void pushPath(const SkPath&, const char tableKey[] = NULL);
     55     void pushCanvas(SkCanvas*, const char tableKey[] = NULL);
     56 
     57 private:
     58     lua_State*  fL;
     59     SkString    fTermCode;
     60     bool        fWeOwnL;
     61 };
     62 
     63 #endif
     64