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improve file selector performance (20% in my extreme case)

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Green Sky 2024-08-13 12:30:42 +02:00
parent 08c9ba3983
commit 73afcfaaeb
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1 changed files with 27 additions and 22 deletions
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49
src/chat_gui/file_selector.cpp
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@ -199,33 +199,38 @@ void FileSelector::render(void) {
}
// files
for (auto const& dir_entry : files) {
if (ImGui::TableNextColumn()) {
ImGui::PushID(tmp_id++);
if (ImGui::Selectable("F", false, ImGuiSelectableFlags_SpanAllColumns | ImGuiSelectableFlags_AllowItemOverlap)) {
_current_file_path = dir_entry.path();
ImGuiListClipper files_clipper;
files_clipper.Begin(files.size());
while (files_clipper.Step()) {
for (int row = files_clipper.DisplayStart; row < files_clipper.DisplayEnd; row++) {
const auto& dir_entry = files.at(row);
if (ImGui::TableNextColumn()) {
ImGui::PushID(tmp_id++);
if (ImGui::Selectable("F", false, ImGuiSelectableFlags_SpanAllColumns | ImGuiSelectableFlags_AllowItemOverlap)) {
_current_file_path = dir_entry.path();
}
ImGui::PopID();
}
ImGui::PopID();
}
if (ImGui::TableNextColumn()) {
ImGui::TextUnformatted(dir_entry.path().filename().generic_u8string().c_str());
}
if (ImGui::TableNextColumn()) {
ImGui::TextUnformatted(dir_entry.path().filename().generic_u8string().c_str());
}
if (ImGui::TableNextColumn()) {
ImGui::TextDisabled("%s", std::to_string(dir_entry.file_size()).c_str());
}
if (ImGui::TableNextColumn()) {
ImGui::TextDisabled("%s", std::to_string(dir_entry.file_size()).c_str());
}
if (ImGui::TableNextColumn()) {
const auto file_time_converted = std::chrono::time_point_cast<std::chrono::system_clock::duration>(
dir_entry.last_write_time()
- decltype(dir_entry.last_write_time())::clock::now()
+ std::chrono::system_clock::now()
);
const auto ctime = std::chrono::system_clock::to_time_t(file_time_converted);
if (ImGui::TableNextColumn()) {
const auto file_time_converted = std::chrono::time_point_cast<std::chrono::system_clock::duration>(
dir_entry.last_write_time()
- decltype(dir_entry.last_write_time())::clock::now()
+ std::chrono::system_clock::now()
);
const auto ctime = std::chrono::system_clock::to_time_t(file_time_converted);
const auto ltime = std::localtime(&ctime);
ImGui::TextDisabled("%2d.%2d.%2d - %2d:%2d", ltime->tm_mday, ltime->tm_mon, ltime->tm_year + 1900, ltime->tm_hour, ltime->tm_min);
const auto ltime = std::localtime(&ctime);
ImGui::TextDisabled("%2d.%2d.%2d - %2d:%2d", ltime->tm_mday, ltime->tm_mon, ltime->tm_year + 1900, ltime->tm_hour, ltime->tm_min);
}
}
}