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Add Quad support for images

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This commit is contained in:
Kevin Harrison 2018-12-14 14:46:02 -05:00
parent 06114619e6
commit 8f7926039b
8 changed files with 61 additions and 36 deletions
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69
src/nuklear_love.c
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@ -184,24 +184,42 @@ static void nk_love_checkImage(int index, struct nk_image *image)
{
if (index < 0)
index += lua_gettop(L) + 1;
if (!nk_love_is_type(index, "Image"))
luaL_typerror(L, index, "Image");
if (nk_love_is_type(index, "Image")) {
lua_getglobal(L, "love");
lua_getfield(L, -1, "graphics");
lua_getfield(L, -1, "newQuad");
lua_pushnumber(L, 0);
lua_pushnumber(L, 0);
lua_getfield(L, index, "getDimensions");
lua_pushvalue(L, index);
lua_call(L, 1, 2);
lua_pushvalue(L, -2);
lua_pushvalue(L, -2);
lua_call(L, 6, 1);
lua_newtable(L);
lua_pushvalue(L, index);
lua_rawseti(L, -2, 1);
lua_replace(L, -3);
lua_rawseti(L, -2, 2);
lua_replace(L, -2);
} else if (lua_istable(L, index)) {
lua_createtable(L, 2, 0);
lua_rawgeti(L, index, 2);
lua_rawgeti(L, index, 1);
if (nk_love_is_type(-1, "Image") && nk_love_is_type(-2, "Quad")) {
lua_rawseti(L, -3, 1);
lua_rawseti(L, -2, 2);
} else {
luaL_argerror(L, index, "expecting {Image, Quad}");
}
} else {
luaL_argerror(L, index, "expecting Image or {Image, Quad}");
}
nk_love_pushregistry("image");
lua_pushvalue(L, index);
lua_pushvalue(L, -2);
int ref = luaL_ref(L, -2);
lua_getfield(L, index, "getDimensions");
lua_pushvalue(L, index);
lua_call(L, 1, 2);
int width = lua_tointeger(L, -2);
int height = lua_tointeger(L, -1);
image->handle = nk_handle_id(ref);
image->w = width;
image->h = height;
image->region[0] = 0;
image->region[1] = 0;
image->region[2] = width;
image->region[3] = height;
lua_pop(L, 3);
lua_pop(L, 2);
}
static int nk_love_is_hex(char c)
@ -847,20 +865,21 @@ static void nk_love_draw_image(int x, int y, unsigned int w, unsigned int h,
lua_getfield(L, -1, "draw");
nk_love_pushregistry("image");
lua_rawgeti(L, -1, image.handle.id);
lua_rawgeti(L, -1, 1);
lua_replace(L, -3);
lua_rawgeti(L, -1, 2);
lua_replace(L, -2);
lua_getfield(L, -3, "newQuad");
lua_pushnumber(L, image.region[0]);
lua_pushnumber(L, image.region[1]);
lua_pushnumber(L, image.region[2]);
lua_pushnumber(L, image.region[3]);
lua_pushnumber(L, image.w);
lua_pushnumber(L, image.h);
lua_call(L, 6, 1);
lua_pushnumber(L, x);
lua_pushnumber(L, y);
lua_pushnumber(L, 0);
lua_pushnumber(L, (double) w / image.region[2]);
lua_pushnumber(L, (double) h / image.region[3]);
lua_getfield(L, -4, "getViewport");
lua_pushvalue(L, -5);
lua_call(L, 1, 4);
double viewportWidth = lua_tonumber(L, -2);
double viewportHeight = lua_tonumber(L, -1);
lua_pop(L, 4);
lua_pushnumber(L, (double) w / viewportWidth);
lua_pushnumber(L, (double) h / viewportHeight);
lua_call(L, 7, 0);
lua_pop(L, 1);
}