mirror/imgui
1
0
Fork 0
mirror of https://github.com/ocornut/imgui.git synced 2026-01-09 23:54:20 +00:00
Code Activity

MultiSelect: added ImGuiSelectionExternalStorage helper. Simplify bool demo.

Browse source
This commit is contained in:
ocornut 2024-06-05 19:00:13 +02:00
parent f9caf4447a
commit db4898cb91
3 changed files with 39 additions and 22 deletions
Download patch file Download diff file Expand all files Collapse all files

29
imgui_demo.cpp
View file

@ -3212,41 +3212,28 @@ static void ShowDemoWindowMultiSelect()
ImGui::BulletText("Shift+Keyboard to copy current value to other boxes.");
// If you have an array of checkboxes, you may want to use NoAutoSelect + NoAutoClear and the ImGuiSelectionExternalStorage helper.
static bool values[20] = {};
static bool items[20] = {};
static ImGuiMultiSelectFlags flags = ImGuiMultiSelectFlags_NoAutoSelect | ImGuiMultiSelectFlags_NoAutoClear | ImGuiMultiSelectFlags_ClearOnEscape;
ImGui::CheckboxFlags("ImGuiMultiSelectFlags_NoAutoSelect", &flags, ImGuiMultiSelectFlags_NoAutoSelect);
ImGui::CheckboxFlags("ImGuiMultiSelectFlags_NoAutoClear", &flags, ImGuiMultiSelectFlags_NoAutoClear);
ImGui::CheckboxFlags("ImGuiMultiSelectFlags_BoxSelect", &flags, ImGuiMultiSelectFlags_BoxSelect); // Cannot use ImGuiMultiSelectFlags_BoxSelect1d as checkboxes are varying width.
struct Funcs
{
static void ApplyMultiSelectRequestsToBoolArray(ImGuiMultiSelectIO* ms_io, bool items[], int items_count)
{
for (ImGuiSelectionRequest& req : ms_io->Requests)
{
if (req.Type == ImGuiSelectionRequestType_SetAll)
for (int n = 0; n < items_count; n++)
items[n] = req.Selected;
else if (req.Type == ImGuiSelectionRequestType_SetRange)
for (int n = (int)req.RangeFirstItem; n <= (int)req.RangeLastItem; n++)
items[n] = req.Selected;
}
}
};
if (ImGui::BeginChild("##Basket", ImVec2(-FLT_MIN, ImGui::GetFontSize() * 20), ImGuiChildFlags_Border | ImGuiChildFlags_ResizeY))
{
ImGuiMultiSelectIO* ms_io = ImGui::BeginMultiSelect(flags);
Funcs::ApplyMultiSelectRequestsToBoolArray(ms_io, values, IM_ARRAYSIZE(values)); //// By specs, it could be optional to apply requests from BeginMultiSelect() if not using a clipper.
ImGuiMultiSelectIO* ms_io = ImGui::BeginMultiSelect(flags, -1, IM_ARRAYSIZE(items));
ImGuiSelectionExternalStorage storage_wrapper;
storage_wrapper.UserData = (void*)items;
storage_wrapper.AdapterSetItemSelected = [](ImGuiSelectionExternalStorage* self, int n, bool selected) { bool* array = (bool*)self->UserData; array[n] = selected; };
storage_wrapper.ApplyRequests(ms_io);
for (int n = 0; n < 20; n++)
{
char label[32];
sprintf(label, "Item %d", n);
ImGui::SetNextItemSelectionUserData(n);
ImGui::Checkbox(label, &values[n]);
ImGui::Checkbox(label, &items[n]);
}
ms_io = ImGui::EndMultiSelect();
Funcs::ApplyMultiSelectRequestsToBoolArray(ms_io, values, IM_ARRAYSIZE(values));
storage_wrapper.ApplyRequests(ms_io);
}
ImGui::EndChild();