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

namespace jin
{
namespace lua
{

	using namespace JinEngine::Graphics;

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

	/* typeset(Text | string, lineheight, spacing) */
	static int l_typeset(lua_State* L)
	{
		Proxy* p = (Proxy*)luax_checktype(L, 1, JIN_GRAPHICS_TEXTUREFONT);
		TextureFont* tf = p->getObject<TextureFont>();
		int lineheight = luax_checkinteger(L, 3);
		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 = tf->typeset(text, lineheight, spacing);
		}
		else if (luax_istype(L, 2, JIN_GRAPHICS_TEXT))
		{
			Proxy* p2 = (Proxy*)luax_checktype(L, 2, JIN_GRAPHICS_TEXT);
			Text* text = p2->getObject<Text>();
			page = tf->typeset(*text, lineheight, spacing);
		}
		Proxy* proxy = (Proxy*)luax_newinstance(L, JIN_GRAPHICS_PAGE, sizeof(Proxy));
		Ref<Page>* refPage = new Ref<Page>(page, JIN_GRAPHICS_PAGE);
		{
			/* retain related ttf */
			Ref<TextureFont>& refTF = p->getRef<TextureFont>();
			refTF.retain();
			refPage->setUserdata(&refTF);
		}
		proxy->bind(refPage);
		return 1;
	}

	static const luaL_Reg f[] = {
		{ "__gc",    l_gc      },
		{ "typeset", l_typeset },
		{ 0,         0         }
	};

	int luaopen_TextureFont(lua_State* L)
	{
		luax_newtype(L, JIN_GRAPHICS_TEXTUREFONT, f);

		return 0;
	}

} // lua
} // jin