add System/ImGuiConfig

CMakeLists.txt

@@ -51,6 +51,7 @@ target_sources(nf7
     common/yas.hh
 
     file/system_dir.cc
+    file/system_imgui_config.cc
     file/system_logger.cc
 )
 target_link_libraries(nf7

file/system_imgui_config.cc

@@ -0,0 +1,67 @@
+#include <memory>
+#include <string>
+#include <string_view>
+#include <typeinfo>
+#include <utility>
+
+#include <imgui.h>
+#include <yas/serialize.hpp>
+#include <yas/types/std/string.hpp>
+#include <yas/types/std/string_view.hpp>
+
+#include "nf7.hh"
+
+#include "common/dir.hh"
+#include "common/ptr_selector.hh"
+#include "common/type_info.hh"
+
+
+using namespace std::literals;
+
+
+namespace nf7 {
+namespace {
+
+class ImGuiConfig final : public File, public nf7::DirItem {
+ public:
+  static inline const GenericTypeInfo<ImGuiConfig> kType = {"System/ImGuiConfig", {}};
+
+  ImGuiConfig(Env& env) noexcept :
+      File(kType, env), DirItem(DirItem::kMenu) {
+  }
+  ImGuiConfig(Env& env, Deserializer& ar) noexcept : ImGuiConfig(env) {
+    std::string buf;
+    ar(buf);
+
+    if (buf.empty()) return;
+    ImGui::LoadIniSettingsFromMemory(buf.data(), buf.size());
+  }
+  void Serialize(Serializer& ar) const noexcept override {
+    if (std::exchange(const_cast<bool&>(skip_save_), false)) {
+      ar(""s);
+    } else {
+      size_t n;
+      const char* ini = ImGui::SaveIniSettingsToMemory(&n);
+      ar(std::string_view(ini, n));
+    }
+  }
+  std::unique_ptr<File> Clone(Env& env) const noexcept override {
+    return std::make_unique<ImGuiConfig>(env);
+  }
+
+  void UpdateMenu() noexcept override;
+
+  File::Interface* interface(const std::type_info& t) noexcept override {
+    return InterfaceSelector<nf7::DirItem>(t).Select(this);
+  }
+
+ private:
+  bool skip_save_ = false;
+};
+
+void ImGuiConfig::UpdateMenu() noexcept {
+  ImGui::MenuItem("skip next serialization", nullptr, &skip_save_);
+}
+
+}
+}  // namespace nf7

tool/init.cc

@@ -42,6 +42,8 @@ int main(void) {
 # define WINDOW_(shown) shown
 
   ar("System/Dir"s, std::map<std::string, L> {
+    { "_imgui"s,
+        Write(ar, "System/ImGuiConfig"s, ""s) },
     { "_logger"s,
         Write(ar, "System/Logger"s, WINDOW_(true), 1024, false, false) },
     { "home"s,