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path: root/src/script/graphics/luaopen_Image.cpp
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#include "3rdparty/luax/luax.h"
#include "libjin/jin.h"
#include "../luaopen_types.h"

using namespace jin::render;

namespace jin
{
namespace lua
{

    static inline Image* checkImage(lua_State* L)
    {
        Proxy* proxy = (Proxy*)luax_checktype(L, 1, TYPE_IMAGE);
        if (proxy != 0 && proxy != nullptr)
            return (Image*)proxy->object;
        return nullptr;
    }

    static int l_getWidth(lua_State* L)
    {
        Image* i = checkImage(L);
        luax_pushnumber(L, i->getWidth()); 
        return 1; 
    }

    static int l_getHeight(lua_State *L)
    {
        Image* i = checkImage(L);
        luax_pushnumber(L, i->getHeight());
        return 1;
    }

    static int l_getPixel(lua_State* L)
    {
        Image* i = checkImage(L);
        int x = luax_checknumber(L, 2); 
        int y = luax_checknumber(L, 3);
        color c = i->getPixel(x, y); 
        luax_pushnumber(L, c.rgba.r);
        luax_pushnumber(L, c.rgba.g);
        luax_pushnumber(L, c.rgba.b);
        luax_pushnumber(L, c.rgba.a);
        return 4;
    }

    static int l_setAnchor(lua_State* L)
    {
        Image* i = checkImage(L);
        int x = luax_checknumber(L, 2); 
        int y = luax_checknumber(L, 3); 
        i->setAnchor(x, y);
        return 0; 
    }

    static int l_getSize(lua_State* L)
    {
        Image* i = checkImage(L);
        luax_pushnumber(L, i->getWidth());
        luax_pushnumber(L, i->getHeight());
        return 2;
    }

    static int l_gc(lua_State* L)
    {
        Proxy* proxy = (Proxy*)luax_checktype(L, 1, TYPE_IMAGE);
        Image* img = (Image*)proxy->object;
        delete img;
        return 0; 
    }

    static const luaL_Reg f[] = {
        {"__gc",      l_gc},
        {"getWidth",  l_getWidth},
        {"getHeight", l_getHeight},
        {"getSize",   l_getSize},
        {"getPixel",  l_getPixel},
        {"setAnchor", l_setAnchor},
        {0, 0 }
    };

    int luaopen_Image(lua_State* L)
    {
        luax_newtype(L, TYPE_IMAGE, f);
        return 0;
    }

}// graphics
}// jin