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lua: Add Image:saveAs{ filename, palette } function

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This commit is contained in:
David Capello 2020-01-13 12:27:32 -03:00
parent df63fb9388
commit cd598e5539
1 changed files with 52 additions and 20 deletions

72
src/app/script/image_class.cpp

@ -315,30 +315,62 @@ int Image_isPlain(lua_State* L)
int Image_saveAs(lua_State* L)
{
auto obj = get_obj<ImageObj>(L, 1);
auto img = obj->image(L);
const char* fn = luaL_checkstring(L, 2);
Image* img = obj->image(L);
Cel* cel = obj->cel(L);
Palette* pal = (cel ? cel->sprite()->palette(cel->frame()): nullptr);
std::string fn;
bool result = false;
if (fn) {
std::string absFn = base::get_absolute_path(fn);
if (!ask_access(L, absFn.c_str(), FileAccessMode::Write, true))
return luaL_error(L, "script doesn't have access to write file %s",
absFn.c_str());
std::unique_ptr<Sprite> sprite(Sprite::MakeStdSprite(img->spec(), 256));
if (lua_istable(L, 2)) {
// Image:saveAs{ filename }
int type = lua_getfield(L, 2, "filename");
if (type != LUA_TNIL) {
if (const char* fn0 = lua_tostring(L, -1))
fn = fn0;
}
lua_pop(L, 1);
std::vector<Image*> oneImage;
sprite->getImages(oneImage);
ASSERT(oneImage.size() == 1);
if (!oneImage.empty())
copy_image(oneImage.front(), img);
std::unique_ptr<Doc> doc(new Doc(sprite.get()));
sprite.release();
doc->setFilename(absFn);
app::Context* ctx = App::instance()->context();
result = (save_document(ctx, doc.get()) >= 0);
// Image:saveAs{ palette }
lua_getfield(L, 2, "palette");
if (type != LUA_TNIL) {
if (auto pal0 = get_palette_from_arg(L, -1))
pal = pal0;
}
lua_pop(L, 1);
}
else {
// Image:saveAs(filename)
const char* fn0 = luaL_checkstring(L, 2);
if (fn0)
fn = fn0;
}
if (fn.empty())
return luaL_error(L, "missing filename in Image:saveAs()");
std::string absFn = base::get_absolute_path(fn);
if (!ask_access(L, absFn.c_str(), FileAccessMode::Write, true))
return luaL_error(L, "script doesn't have access to write file %s",
absFn.c_str());
std::unique_ptr<Sprite> sprite(Sprite::MakeStdSprite(img->spec(), 256));
std::vector<Image*> oneImage;
sprite->getImages(oneImage);
ASSERT(oneImage.size() == 1);
if (!oneImage.empty())
copy_image(oneImage.front(), img);
if (pal)
sprite->setPalette(pal, false);
std::unique_ptr<Doc> doc(new Doc(sprite.get()));
sprite.release();
doc->setFilename(absFn);
app::Context* ctx = App::instance()->context();
result = (save_document(ctx, doc.get()) >= 0);
lua_pushboolean(L, result);
return 1;
}