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1 /* | 1 /* |
2 * Copyright 2013 Google Inc. | 2 * Copyright 2013 Google Inc. |
3 * | 3 * |
4 * Use of this source code is governed by a BSD-style license that can be | 4 * Use of this source code is governed by a BSD-style license that can be |
5 * found in the LICENSE file. | 5 * found in the LICENSE file. |
6 */ | 6 */ |
7 | 7 |
8 #include "SampleCode.h" | 8 #include "SampleCode.h" |
9 #include "SkView.h" | 9 #include "SkView.h" |
10 #include "SkLua.h" | 10 #include "SkLua.h" |
11 #include "SkCanvas.h" | 11 #include "SkCanvas.h" |
12 #include "Resources.h" | 12 #include "Resources.h" |
13 #include "SkData.h" | 13 #include "SkData.h" |
14 | 14 |
15 extern "C" { | 15 extern "C" { |
16 #include "lua.h" | 16 #include "lua.h" |
17 #include "lualib.h" | 17 #include "lualib.h" |
18 #include "lauxlib.h" | 18 #include "lauxlib.h" |
19 } | 19 } |
20 | 20 |
| 21 #define LUA_FILENAME "test.lua" |
| 22 //#define LUA_FILENAME "slides.lua" |
| 23 |
21 static const char gDrawName[] = "onDrawContent"; | 24 static const char gDrawName[] = "onDrawContent"; |
| 25 static const char gClickName[] = "onClickHandler"; |
22 | 26 |
23 static const char gMissingCode[] = "" | 27 static const char gMissingCode[] = "" |
24 "local paint = Sk.newPaint()" | 28 "local paint = Sk.newPaint()" |
25 "paint:setAntiAlias(true)" | 29 "paint:setAntiAlias(true)" |
26 "paint:setTextSize(30)" | 30 "paint:setTextSize(30)" |
27 "" | 31 "" |
28 "function onDrawContent(canvas)" | 32 "function onDrawContent(canvas)" |
29 " canvas:drawText('missing \"test.lua\"', 20, 50, paint)" | 33 " canvas:drawText('missing \"test.lua\"', 20, 50, paint)" |
30 "end" | 34 "end" |
31 ; | 35 ; |
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47 if (lua_pcall(L, 1, 0, 0) != LUA_OK) { | 51 if (lua_pcall(L, 1, 0, 0) != LUA_OK) { |
48 SkDebugf("lua err: %s\n", lua_tostring(L, -1)); | 52 SkDebugf("lua err: %s\n", lua_tostring(L, -1)); |
49 } | 53 } |
50 } | 54 } |
51 } | 55 } |
52 | 56 |
53 lua_State* ensureLua() { | 57 lua_State* ensureLua() { |
54 if (NULL == fLua) { | 58 if (NULL == fLua) { |
55 fLua = SkNEW(SkLua); | 59 fLua = SkNEW(SkLua); |
56 | 60 |
57 SkString str = GetResourcePath("test.lua"); | 61 SkString str = GetResourcePath(LUA_FILENAME); |
58 SkData* data = SkData::NewFromFileName(str.c_str()); | 62 SkData* data = SkData::NewFromFileName(str.c_str()); |
59 if (data) { | 63 if (data) { |
60 fLua->runCode(data->data(), data->size()); | 64 fLua->runCode(data->data(), data->size()); |
61 data->unref(); | 65 data->unref(); |
62 this->setImageFilename(fLua->get()); | 66 this->setImageFilename(fLua->get()); |
63 } else { | 67 } else { |
64 fLua->runCode(gMissingCode); | 68 fLua->runCode(gMissingCode); |
65 } | 69 } |
66 } | 70 } |
67 return fLua->get(); | 71 return fLua->get(); |
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84 | 88 |
85 lua_getglobal(L, gDrawName); | 89 lua_getglobal(L, gDrawName); |
86 if (!lua_isfunction(L, -1)) { | 90 if (!lua_isfunction(L, -1)) { |
87 int t = lua_type(L, -1); | 91 int t = lua_type(L, -1); |
88 SkDebugf("--- expected %s function %d, ignoring.\n", gDrawName, t); | 92 SkDebugf("--- expected %s function %d, ignoring.\n", gDrawName, t); |
89 lua_pop(L, 1); | 93 lua_pop(L, 1); |
90 } else { | 94 } else { |
91 // does it make sense to try to "cache" the lua version of this | 95 // does it make sense to try to "cache" the lua version of this |
92 // canvas between draws? | 96 // canvas between draws? |
93 fLua->pushCanvas(canvas); | 97 fLua->pushCanvas(canvas); |
94 if (lua_pcall(L, 1, 0, 0) != LUA_OK) { | 98 if (lua_pcall(L, 1, 1, 0) != LUA_OK) { |
95 SkDebugf("lua err: %s\n", lua_tostring(L, -1)); | 99 SkDebugf("lua err: %s\n", lua_tostring(L, -1)); |
| 100 } else { |
| 101 if (lua_isboolean(L, -1) && lua_toboolean(L, -1)) { |
| 102 this->inval(NULL); |
| 103 } |
96 } | 104 } |
97 } | 105 } |
98 // need a way for the lua-sample to tell us if they want animations... | |
99 // hard-code it ON for now. | |
100 this->inval(NULL); | |
101 } | 106 } |
102 | 107 |
103 virtual SkView::Click* onFindClickHandler(SkScalar x, SkScalar y, | 108 virtual SkView::Click* onFindClickHandler(SkScalar x, SkScalar y, |
104 unsigned modi) SK_OVERRIDE { | 109 unsigned modi) SK_OVERRIDE { |
| 110 lua_State* L = this->ensureLua(); |
| 111 lua_getglobal(L, gClickName); |
| 112 if (lua_isfunction(L, -1)) { |
| 113 fLua->pushScalar(x); |
| 114 fLua->pushScalar(y); |
| 115 if (lua_pcall(L, 2, 1, 0) != LUA_OK) { |
| 116 SkDebugf("lua err: %s\n", lua_tostring(L, -1)); |
| 117 } else { |
| 118 if (lua_isboolean(L, -1) && lua_toboolean(L, -1)) { |
| 119 this->inval(NULL); |
| 120 } |
| 121 } |
| 122 } |
105 return this->INHERITED::onFindClickHandler(x, y, modi); | 123 return this->INHERITED::onFindClickHandler(x, y, modi); |
106 } | 124 } |
107 | 125 |
108 virtual bool onClick(Click* click) SK_OVERRIDE { | 126 virtual bool onClick(Click* click) SK_OVERRIDE { |
109 return this->INHERITED::onClick(click); | 127 return this->INHERITED::onClick(click); |
110 } | 128 } |
111 | 129 |
112 private: | 130 private: |
113 SkLua* fLua; | 131 SkLua* fLua; |
114 | 132 |
115 typedef SampleView INHERITED; | 133 typedef SampleView INHERITED; |
116 }; | 134 }; |
117 | 135 |
118 ////////////////////////////////////////////////////////////////////////////// | 136 ////////////////////////////////////////////////////////////////////////////// |
119 | 137 |
120 static SkView* MyFactory() { return new LuaView; } | 138 static SkView* MyFactory() { return new LuaView; } |
121 static SkViewRegister reg(MyFactory); | 139 static SkViewRegister reg(MyFactory); |
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