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 "SkClipStack.h"
12#include "SkColor.h"
13#include "SkPathEffect.h"
14#include "SkScalar.h"
15#include "SkString.h"
16
17struct lua_State;
18
19class SkCanvas;
20class SkMatrix;
21class SkPaint;
22class SkPath;
23struct SkRect;
24class SkRRect;
25
26#define SkScalarToLua(x)    SkScalarToDouble(x)
27#define SkLuaToScalar(x)    SkDoubleToScalar(x)
28
29class SkLua {
30public:
31    static void Load(lua_State*);
32
33    SkLua(const char termCode[] = NULL);    // creates a new L, will close it
34    SkLua(lua_State*);                      // uses L, will not close it
35    ~SkLua();
36
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[] = NULL);
45    void pushString(const char[], const char tableKey[] = NULL);
46    void pushString(const char[], size_t len, const char tableKey[] = NULL);
47    void pushString(const SkString&, const char tableKey[] = NULL);
48    void pushArrayU16(const uint16_t[], int count, const char tableKey[] = NULL);
49    void pushArrayPoint(const SkPoint[], int count, const char key[] = NULL);
50    void pushArrayScalar(const SkScalar[], int count, const char key[] = NULL);
51    void pushColor(SkColor, const char tableKey[] = NULL);
52    void pushU32(uint32_t, const char tableKey[] = NULL);
53    void pushScalar(SkScalar, const char tableKey[] = NULL);
54    void pushRect(const SkRect&, const char tableKey[] = NULL);
55    void pushRRect(const SkRRect&, const char tableKey[] = NULL);
56    void pushDash(const SkPathEffect::DashInfo&, const char tableKey[] = NULL);
57    void pushMatrix(const SkMatrix&, const char tableKey[] = NULL);
58    void pushPaint(const SkPaint&, const char tableKey[] = NULL);
59    void pushPath(const SkPath&, const char tableKey[] = NULL);
60    void pushCanvas(SkCanvas*, const char tableKey[] = NULL);
61    void pushClipStack(const SkClipStack&, const char tableKey[] = NULL);
62    void pushClipStackElement(const SkClipStack::Element& element, const char tableKey[] = NULL);
63
64    // This SkCanvas lua methods is declared here to benefit from SkLua's friendship with SkCanvas.
65    static int lcanvas_getReducedClipStack(lua_State* L);
66
67private:
68    lua_State*  fL;
69    SkString    fTermCode;
70    bool        fWeOwnL;
71};
72
73#endif
74