1 files changed, 75 insertions, 0 deletions
diff --git a/src/lua/graphics/luaopen_Canvas.cpp b/src/lua/graphics/luaopen_Canvas.cpp
new file mode 100644
index 0000000..5dede84
--- /dev/null
+++ b/src/lua/graphics/luaopen_Canvas.cpp
@@ -0,0 +1,75 @@
+#include "lua/luax.h"
+#include "lua/luaopen_types.h"
+#include "libjin/jin.h"
+
+namespace jin
+{
+namespace lua
+{
+
+    using namespace jin::render;
+
+    static inline Canvas* checkCanvas(lua_State* L)
+    {
+        Proxy* proxy = (Proxy*)luax_checktype(L, 1, TYPE_CANVAS);
+        if (proxy != nullptr)
+            return (Canvas*)proxy->object;
+        return nullptr;
+    }
+
+    static int l_getWidth(lua_State* L)
+    {
+        Canvas* c = checkCanvas(L);
+        luax_pushnumber(L, c->getWidth());
+        return 1;
+    }
+
+    static int l_getHeight(lua_State* L)
+    {
+        Canvas* c = checkCanvas(L);
+        luax_pushnumber(L, c->getHeight());
+        return 1;
+    }
+
+    static int l_getSize(lua_State* L)
+    {
+        Canvas* c = checkCanvas(L);
+        luax_pushnumber(L, c->getWidth());
+        luax_pushnumber(L, c->getHeight());
+        return 2;
+    }
+
+    static int l_setAnchor(lua_State* L)
+    {
+        Canvas* c = checkCanvas(L);
+        int x = luax_checknumber(L, 1); 
+        int y = luax_checknumber(L, 2);
+        c->setAnchor(x, y);
+        return 0; 
+    }
+
+    static int l_gc(lua_State* L)
+    {
+        Proxy* proxy = (Proxy*)luax_checktype(L, 1, TYPE_CANVAS);
+        Canvas* canvas = (Canvas*)proxy->object;
+        delete canvas; 
+        return 0;
+    }
+
+    static const luaL_Reg f[] = {
+        {"__gc",      l_gc},
+        {"getWidth",  l_getWidth},
+        {"getHeight", l_getHeight},
+        {"getSize",   l_getSize},
+        {"setAnchor", l_setAnchor},
+        {0, 0 }
+    };
+
+    int luaopen_Canvas(lua_State* L)
+    {
+        luax_newtype(L, TYPE_CANVAS, f);
+        return 0;
+    }
+
+}// lua
+}// jin 
+\ No newline at end of file