ImGuiToolSystem.md

ImGuiToolSystem

System that displays a "Tools" item in ImGui's main menu bar, which lists all Entities with an ImGuiToolComponent.

Clicking an item in "Tools" dropdown will toggle the ImGuiToolComponent's enabled attribute, letting tools use this attribute to know if the user wants the tool to be displayed or not.

Example

EntityManager em;

// ... add graphics system handling ImGui
em += ImGuiToolSystem(em); // Add the tool system

em += [](Entity & e) {
    auto & tool = e.attach<ImGuiToolComponent>();
    tool.name = "My tool";
    tool.enabled = true;

    e += ImGuiComponent([] {
        if (!tool.enabled) // May be set to false by the ImGuiToolSystem
            return;

        if (ImGui::Begin("My window", &tool.enabled)) // This will make the ImGui window have a "close" button
            ImGui::Text("Content");
        ImGui::End();
    });
};