int w_Canvas_clear(lua_State * L)
{
Canvas * canvas = luax_checkcanvas(L, 1);
Color c;
if (lua_isnoneornil(L, 2)) {
c.r = 0;
c.g = 0;
c.b = 0;
c.a = 0;
} else if (lua_istable(L, 2)) {
lua_pushinteger(L, 1);
lua_gettable(L, 2);
c.r = (unsigned char)luaL_checkint(L, -1);
lua_pushinteger(L, 2);
lua_gettable(L, 2);
c.g = (unsigned char)luaL_checkint(L, -1);
lua_pushinteger(L, 3);
lua_gettable(L, 2);
c.b = (unsigned char)luaL_checkint(L, -1);
lua_pushinteger(L, 4);
lua_gettable(L, 2);
c.g = (unsigned char)luaL_optint(L, -1, 255);
lua_pop(L, 4);
} else {
c.r = (unsigned char)luaL_checkint(L, 2);
c.g = (unsigned char)luaL_checkint(L, 3);
c.b = (unsigned char)luaL_checkint(L, 4);
c.a = (unsigned char)luaL_optint(L, 5, 255);
}
canvas->clear(c);
return 0;
}
int w_Canvas_getImageData(lua_State * L)
{
Canvas * canvas = luax_checkcanvas(L, 1);
love::image::Image * image = luax_getmodule<love::image::Image>(L, "image", MODULE_IMAGE_T);
love::image::ImageData * img = canvas->getImageData( image );
luax_newtype(L, "ImageData", IMAGE_IMAGE_DATA_T, (void *)img);
return 1;
}
int w_Canvas_setWrap(lua_State * L)
{
Canvas * canvas = luax_checkcanvas(L, 1);
const char * wrap_s = luaL_checkstring(L, 2);
const char * wrap_t = luaL_checkstring(L, 3);
Image::Wrap w;
if (!Image::getConstant(wrap_s, w.s))
return luaL_error(L, "Invalid wrap mode: %s", wrap_s);
if (!Image::getConstant(wrap_t, w.t))
return luaL_error(L, "Invalid wrap mode: %s", wrap_t);
canvas->setWrap(w);
return 0;
}
int w_Canvas_getFilter(lua_State * L)
{
Canvas * canvas = luax_checkcanvas(L, 1);
Image::Filter f = canvas->getFilter();
const char * minstr;
const char * magstr;
Image::getConstant(f.min, minstr);
Image::getConstant(f.mag, magstr);
lua_pushstring(L, minstr);
lua_pushstring(L, magstr);
return 2;
}
int w_Canvas_setFilter(lua_State * L)
{
Canvas * canvas = luax_checkcanvas(L, 1);
const char * minstr = luaL_checkstring(L, 2);
const char * magstr = luaL_checkstring(L, 3);
Image::Filter f;
if (!Image::getConstant(minstr, f.min))
return luaL_error(L, "Invalid min filter mode: %s", minstr);
if (!Image::getConstant(magstr, f.mag))
return luaL_error(L, "Invalid max filter mode: %s", magstr);
canvas->setFilter(f);
return 0;
}
int w_Canvas_getWrap(lua_State * L)
{
Canvas * canvas = luax_checkcanvas(L, 1);
Image::Wrap w = canvas->getWrap();
const char * wrap_s;
const char * wrap_t;
Image::getConstant(w.s, wrap_s);
Image::getConstant(w.t, wrap_t);
lua_pushstring(L, wrap_s);
lua_pushstring(L, wrap_t);
return 2;
}
int w_Canvas_renderTo(lua_State * L)
{
// As startGrab() clears the framebuffer, better not allow
// grabbing inside another grabbing
if (Canvas::current != NULL) {
Canvas::bindDefaultCanvas();
return luaL_error(L, "Current render target not the default canvas!");
}
Canvas * canvas = luax_checkcanvas(L, 1);
if (!lua_isfunction(L, 2))
return luaL_error(L, "Need a function to render to canvas.");
canvas->startGrab();
lua_settop(L, 2); // make sure the function is on top of the stack
lua_call(L, 0, 0);
canvas->stopGrab();
return 0;
}
int w_Canvas_getHeight(lua_State * L)
{
Canvas * canvas = luax_checkcanvas(L, 1);
lua_pushnumber(L, canvas->getHeight());
return 1;
}
