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 "include/core/SkColor.h"
12 #include "include/core/SkPathEffect.h"
13 #include "include/core/SkScalar.h"
14 #include "include/core/SkString.h"
15 
16 struct lua_State;
17 
18 class SkCanvas;
19 class SkMatrix;
20 class SkPaint;
21 class SkPath;
22 struct SkRect;
23 class SkRRect;
24 class SkTextBlob;
25 
26 #define SkScalarToLua(x)    SkScalarToDouble(x)
27 #define SkLuaToScalar(x)    SkDoubleToScalar(x)
28 
29 class SkLua {
30 public:
31     static void Load(lua_State*);
32 
33     SkLua(const char termCode[] = nullptr); // creates a new L, will close it
34     SkLua(lua_State*);                      // uses L, will not close it
35     ~SkLua();
36 
get()37     lua_State* get() const { return fL; }
38     lua_State* operator*() const { return fL; }
39     lua_State* operator->() const { return fL; }
40 
41     bool runCode(const char code[]);
42     bool runCode(const void* code, size_t size);
43 
44     void pushBool(bool, const char tableKey[] = nullptr);
45     void pushString(const char[], const char tableKey[] = nullptr);
46     void pushString(const char[], size_t len, const char tableKey[] = nullptr);
47     void pushString(const SkString&, const char tableKey[] = nullptr);
48     void pushArrayU16(const uint16_t[], int count, const char tableKey[] = nullptr);
49     void pushArrayPoint(const SkPoint[], int count, const char key[] = nullptr);
50     void pushArrayScalar(const SkScalar[], int count, const char key[] = nullptr);
51     void pushColor(SkColor, const char tableKey[] = nullptr);
52     void pushU32(uint32_t, const char tableKey[] = nullptr);
53     void pushScalar(SkScalar, const char tableKey[] = nullptr);
54     void pushRect(const SkRect&, const char tableKey[] = nullptr);
55     void pushRRect(const SkRRect&, const char tableKey[] = nullptr);
56     void pushDash(const SkPathEffect::DashInfo&, const char tableKey[] = nullptr);
57     void pushMatrix(const SkMatrix&, const char tableKey[] = nullptr);
58     void pushPaint(const SkPaint&, const char tableKey[] = nullptr);
59     void pushPath(const SkPath&, const char tableKey[] = nullptr);
60     void pushCanvas(SkCanvas*, const char tableKey[] = nullptr);
61     void pushTextBlob(const SkTextBlob*, const char tableKey[] = nullptr);
62 
63 private:
64     lua_State*  fL;
65     SkString    fTermCode;
66     bool        fWeOwnL;
67 };
68 
69 #endif
70