fix some file selector glitches

src/chat_gui4.cpp

@@ -737,7 +737,11 @@ void ChatGui4::renderMessageBodyFile(Message3Registry& reg, const Message3 e) {
 	) {
 		if (ImGui::Button("save to")) {
 			_fss.requestFile(
-				[](const auto& path) -> bool { return std::filesystem::is_directory(path); },
+				[](std::filesystem::path& path) -> bool {
+					// remove file path
+					path.remove_filename();
+					return std::filesystem::is_directory(path);
+				},
 				[this, &reg, e](const auto& path) {
 					if (reg.valid(e)) { // still valid
 						// TODO: trim file?

src/file_selector.cpp

@@ -18,7 +18,7 @@ FileSelector::FileSelector(void) {
 }
 
 void FileSelector::requestFile(
-	std::function<bool(const std::filesystem::path& path)>&& is_valid,
+	std::function<bool(std::filesystem::path& path)>&& is_valid,
 	std::function<void(const std::filesystem::path& path)>&& on_choose,
 	std::function<void(void)>&& on_cancel
 ) {
@@ -77,7 +77,9 @@ void FileSelector::render(void) {
 			if (current_path.has_parent_path()) {
 				if (ImGui::TableNextColumn()) {
 					if (ImGui::Selectable("D##..", false, ImGuiSelectableFlags_SpanAllColumns | ImGuiSelectableFlags_AllowItemOverlap)) {
-						_current_file_path = _current_file_path.parent_path();
+						// the first "parent_path()" only removes the filename and the ending "/"
+						_current_file_path = _current_file_path.parent_path().parent_path() / "";
+						//_current_file_path = _current_file_path.remove_filename().parent_path() / "";
 					}
 				}
 

src/file_selector.hpp

@@ -8,7 +8,7 @@ struct FileSelector {
 
 	bool _open_popup {false};
 
-	std::function<bool(const std::filesystem::path& path)> _is_valid = [](auto){ return true; };
+	std::function<bool(std::filesystem::path& path)> _is_valid = [](auto){ return true; };
 	std::function<void(const std::filesystem::path& path)> _on_choose = [](auto){};
 	std::function<void(void)> _on_cancel = [](){};
 
@@ -18,8 +18,9 @@ struct FileSelector {
 		FileSelector(void);
 
 		// TODO: supply hints
+		// HACK: until we supply hints, is_valid can modify
 		void requestFile(
-			std::function<bool(const std::filesystem::path& path)>&& is_valid,
+			std::function<bool(std::filesystem::path& path)>&& is_valid,
 			std::function<void(const std::filesystem::path& path)>&& on_choose,
 			std::function<void(void)>&& on_cancel
 		);

src/main_screen.cpp

@@ -275,7 +275,7 @@ Screen* MainScreen::render(float time_delta, bool&) {
 	struct PerfProfileRender {
 		float low_delay_window {1.5f};
 		float low_delay_min {1.f/60.f};
-		float low_delay_max {1.f/30.f};
+		float low_delay_max {1.f/60.f};
 
 		float mid_delay_window {30.f};
 		float mid_delay_min {1.f/60.f};
@@ -289,7 +289,7 @@ Screen* MainScreen::render(float time_delta, bool&) {
 	const static PerfProfileRender normalPerfProfile{
 		//1.5f,		// low_delay_window
 		//1.f/60.f,	// low_delay_min
-		//1.f/30.f,	// low_delay_max
+		//1.f/60.f,	// low_delay_max
 
 		//30.f,		// mid_delay_window
 		//1.f/60.f,	// mid_delay_min

src/main_screen.hpp

@@ -94,7 +94,7 @@ struct MainScreen final : public Screen {
 	// 0 - normal
 	// 1 - reduced
 	// 2 - power save
-	int _fps_perf_mode {1};
+	int _fps_perf_mode {0};
 	// 0 - normal
 	// 1 - power save
 	int _compute_perf_mode {0};