improve file selector performance (20% in my extreme case)
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@ -199,33 +199,38 @@ void FileSelector::render(void) {
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}
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// files
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for (auto const& dir_entry : files) {
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if (ImGui::TableNextColumn()) {
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ImGui::PushID(tmp_id++);
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if (ImGui::Selectable("F", false, ImGuiSelectableFlags_SpanAllColumns | ImGuiSelectableFlags_AllowItemOverlap)) {
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_current_file_path = dir_entry.path();
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ImGuiListClipper files_clipper;
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files_clipper.Begin(files.size());
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while (files_clipper.Step()) {
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for (int row = files_clipper.DisplayStart; row < files_clipper.DisplayEnd; row++) {
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const auto& dir_entry = files.at(row);
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if (ImGui::TableNextColumn()) {
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ImGui::PushID(tmp_id++);
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if (ImGui::Selectable("F", false, ImGuiSelectableFlags_SpanAllColumns | ImGuiSelectableFlags_AllowItemOverlap)) {
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_current_file_path = dir_entry.path();
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}
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ImGui::PopID();
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}
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ImGui::PopID();
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}
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if (ImGui::TableNextColumn()) {
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ImGui::TextUnformatted(dir_entry.path().filename().generic_u8string().c_str());
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}
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if (ImGui::TableNextColumn()) {
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ImGui::TextUnformatted(dir_entry.path().filename().generic_u8string().c_str());
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}
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if (ImGui::TableNextColumn()) {
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ImGui::TextDisabled("%s", std::to_string(dir_entry.file_size()).c_str());
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}
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if (ImGui::TableNextColumn()) {
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ImGui::TextDisabled("%s", std::to_string(dir_entry.file_size()).c_str());
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}
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if (ImGui::TableNextColumn()) {
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const auto file_time_converted = std::chrono::time_point_cast<std::chrono::system_clock::duration>(
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dir_entry.last_write_time()
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- decltype(dir_entry.last_write_time())::clock::now()
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+ std::chrono::system_clock::now()
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);
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const auto ctime = std::chrono::system_clock::to_time_t(file_time_converted);
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if (ImGui::TableNextColumn()) {
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const auto file_time_converted = std::chrono::time_point_cast<std::chrono::system_clock::duration>(
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dir_entry.last_write_time()
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- decltype(dir_entry.last_write_time())::clock::now()
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+ std::chrono::system_clock::now()
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);
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const auto ctime = std::chrono::system_clock::to_time_t(file_time_converted);
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const auto ltime = std::localtime(&ctime);
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ImGui::TextDisabled("%2d.%2d.%2d - %2d:%2d", ltime->tm_mday, ltime->tm_mon, ltime->tm_year + 1900, ltime->tm_hour, ltime->tm_min);
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const auto ltime = std::localtime(&ctime);
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ImGui::TextDisabled("%2d.%2d.%2d - %2d:%2d", ltime->tm_mday, ltime->tm_mon, ltime->tm_year + 1900, ltime->tm_hour, ltime->tm_min);
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}
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}
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}
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