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path: root/src/lua/modules/graphics/je_lua_ttf.cpp
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#include "lua/modules/luax.h"
#include "lua/modules/types.h"
#include "lua/common/je_lua_common.h"
#include "libjin/jin.h"
#include "je_lua_page.h"

using namespace JinEngine::Graphics;
using namespace JinEngine::Graphics::Fonts;

namespace JinEngine
{
    namespace Lua
    {

        LUA_IMPLEMENT int l_gc(lua_State* L)
        {
            Proxy* proxy = (Proxy*)luax_checktype(L, 1, JIN_GRAPHICS_TTF);
            proxy->release();
            return 0; 
        }

	    /* typeset(Text | string, lineheight, spacing) */
        LUA_IMPLEMENT int l_typeset(lua_State* L)
        {
            Proxy* pxyTTF = (Proxy*)luax_checktype(L, 1, JIN_GRAPHICS_TTF);
            Shared<TTF>& shrTTF = pxyTTF->getShared<TTF>();
		    TTF* ttf = pxyTTF->getObject<TTF>();
            int lineheight = luax_optnumber(L, 3, ttf->getFontSize());
            int spacing = luax_optnumber(L, 4, 0);
		    Page* page = nullptr;
		    if (luax_isstring(L, 2))
		    {
			    unsigned length;
			    const char* str = luax_checklstring(L, 2, &length);
			    Text text(Encode::UTF8, str, length);
			    page = ttf->typeset(text, lineheight, spacing);
		    }
		    else if (luax_istype(L, 2, JIN_GRAPHICS_TEXT))
		    {
			    Proxy* pxyText = (Proxy*)luax_checktype(L, 2, JIN_GRAPHICS_TEXT);
			    Text* text = pxyText->getObject<Text>();
			    page = ttf->typeset(*text, lineheight, spacing);
		    }
            Proxy* pxyPage = luax_newinstance(L, JIN_GRAPHICS_PAGE);
		    Shared<Page>* refPage = new Shared<Page>(page, JIN_GRAPHICS_PAGE);
            refPage->setDependency(PageDependency::DEP_TTF, &shrTTF);
            pxyPage->bind(refPage);
            return 1;
        }

        LUA_EXPORT int luaopen_TTF(lua_State* L)
        {
            luaL_Reg f[] = {
                { "__gc",    l_gc      },
                { "typeset", l_typeset },
                { 0,         0         }
            };
            luax_newtype(L, JIN_GRAPHICS_TTF, f);

            return 0;
        }

    } // namespace Lua
} // namespace JinEngine