GUIFormSpecMenu: Fix label multiline translation (minetest#12527)

src/gui/guiFormSpecMenu.cpp

@@ -1731,25 +1731,27 @@ void GUIFormSpecMenu::parseLabel(parserData* data, const std::string &element)
  return;
 
  std::vector<std::string> v_pos = split(parts[0],',');
- std::string text = parts[1];
 
  MY_CHECKPOS("label",0);
 
  if(!data->explicit_size)
  warningstream<<"invalid use of label without a size[] element"<<std::endl;
 
- std::vector<std::string> lines = split(text, '\n');
-
  auto style = getDefaultStyleForElement("label", "");
  gui::IGUIFont *font = style.getFont();
  if (!font)
  font = m_font;
 
- for (unsigned int i = 0; i != lines.size(); i++) {
- std::wstring wlabel_colors = translate_string(
- utf8_to_wide(unescape_string(lines[i])));
- // Without color escapes to get the font dimensions
- std::wstring wlabel_plain = unescape_enriched(wlabel_colors);
+ EnrichedString str(unescape_string(utf8_to_wide(parts[1])));
+ size_t str_pos = 0;
+
+ for (size_t i = 0; str_pos < str.size(); ++i) {
+ // Split per line
+ size_t str_nl = str.getString().find(L'\n', str_pos);
+ if (str_nl == std::wstring::npos)
+ str_nl = str.getString().size();
+ EnrichedString line = str.substr(str_pos, str_nl - str_pos);
+ str_pos += line.size() + 1;
 
  core::rect<s32> rect;
 
@@ -1766,7 +1768,7 @@ void GUIFormSpecMenu::parseLabel(parserData* data, const std::string &element)
 
  rect = core::rect<s32>(
  pos.X, pos.Y,
- pos.X + font->getDimension(wlabel_plain.c_str()).Width,
+ pos.X + font->getDimension(line.c_str()).Width,
  pos.Y + imgsize.Y);
 
  } else {
@@ -1788,19 +1790,19 @@ void GUIFormSpecMenu::parseLabel(parserData* data, const std::string &element)
 
  rect = core::rect<s32>(
  pos.X, pos.Y - m_btn_height,
- pos.X + font->getDimension(wlabel_plain.c_str()).Width,
+ pos.X + font->getDimension(line.c_str()).Width,
  pos.Y + m_btn_height);
  }
 
  FieldSpec spec(
  "",
- wlabel_colors,
+ L"",
  L"",
  258 + m_fields.size(),
  4
  );
  gui::IGUIStaticText *e = gui::StaticText::add(Environment,
- spec.flabel.c_str(), rect, false, false, data->current_parent,
+ line, rect, false, false, data->current_parent,
  spec.fid);
  e->setTextAlignment(gui::EGUIA_UPPERLEFT, gui::EGUIA_CENTER);