字体

使用OpenSans的字体

黑色主题

    void ImGuiLayer::SetDarkThemeColors()
    {
        auto& colors = ImGui::GetStyle().Colors;
        colors[ImGuiCol_WindowBg] = ImVec4{ 0.1f, 0.105f, 0.11f, 1.0f };
        // Headers
        colors[ImGuiCol_Header] = ImVec4{ 0.2f, 0.205f, 0.21f, 1.0f };
        colors[ImGuiCol_HeaderHovered] = ImVec4{ 0.3f, 0.305f, 0.31f, 1.0f };
        colors[ImGuiCol_HeaderActive] = ImVec4{ 0.15f, 0.1505f, 0.151f, 1.0f };

        // Buttons
        colors[ImGuiCol_Button] = ImVec4{ 0.2f, 0.205f, 0.21f, 1.0f };
        colors[ImGuiCol_ButtonHovered] = ImVec4{ 0.3f, 0.305f, 0.31f, 1.0f };
        colors[ImGuiCol_ButtonActive] = ImVec4{ 0.15f, 0.1505f, 0.151f, 1.0f };
        // Frame BG
        colors[ImGuiCol_FrameBg] = ImVec4{ 0.2f, 0.205f, 0.21f, 1.0f };
        colors[ImGuiCol_FrameBgHovered] = ImVec4{ 0.3f, 0.305f, 0.31f, 1.0f };
        colors[ImGuiCol_FrameBgActive] = ImVec4{ 0.15f, 0.1505f, 0.151f, 1.0f };
        // Tabs
        colors[ImGuiCol_Tab] = ImVec4{ 0.15f, 0.1505f, 0.151f, 1.0f };
        colors[ImGuiCol_TabHovered] = ImVec4{ 0.38f, 0.3805f, 0.381f, 1.0f };
        colors[ImGuiCol_TabActive] = ImVec4{ 0.28f, 0.2805f, 0.281f, 1.0f };
        colors[ImGuiCol_TabUnfocused] = ImVec4{ 0.15f, 0.1505f, 0.151f, 1.0f };
        colors[ImGuiCol_TabUnfocusedActive] = ImVec4{ 0.2f, 0.205f, 0.21f, 1.0f };
        // Title
        colors[ImGuiCol_TitleBg] = ImVec4{ 0.15f, 0.1505f, 0.151f, 1.0f };
        colors[ImGuiCol_TitleBgActive] = ImVec4{ 0.15f, 0.1505f, 0.151f, 1.0f };
        colors[ImGuiCol_TitleBgCollapsed] = ImVec4{ 0.15f, 0.1505f, 0.151f, 1.0f };
    }

Coponents的固定imgui绘制

必须增添组件之类的功能，具体的功能用lambda传入实现

template<typename T, typename UIFunction>
    static void DrawComponent(const std::string& name, Entity entity, UIFunction uiFunction)
    {
        const ImGuiTreeNodeFlags treeNodeFlags = ImGuiTreeNodeFlags_DefaultOpen | ImGuiTreeNodeFlags_Framed | ImGuiTreeNodeFlags_SpanAvailWidth | ImGuiTreeNodeFlags_AllowItemOverlap | ImGuiTreeNodeFlags_FramePadding;
        if (entity.HasComponent<T>())
        {
            auto& component = entity.GetComponent<T>();
            ImVec2 contentRegionAvailable = ImGui::GetContentRegionAvail();
            ImGui::PushStyleVar(ImGuiStyleVar_FramePadding, ImVec2{ 4, 4 });
            float lineHeight = GImGui->Font->FontSize + GImGui->Style.FramePadding.y * 2.0f;
            ImGui::Separator();
            bool open = ImGui::TreeNodeEx((void*)typeid(T).hash_code(), treeNodeFlags, name.c_str());
            ImGui::PopStyleVar(
            );
            ImGui::SameLine(contentRegionAvailable.x - lineHeight * 0.5f);
            if (ImGui::Button("+", ImVec2{ lineHeight, lineHeight }))
            {
                ImGui::OpenPopup("ComponentSettings");
            }
            bool removeComponent = false;
            if (ImGui::BeginPopup("ComponentSettings"))
            {
                if (ImGui::MenuItem("Remove component"))
                    removeComponent = true;
                ImGui::EndPopup();
            }
            if (open)
            {
                uiFunction(component);
                ImGui::TreePop();
            }
            if (removeComponent)
                entity.RemoveComponent<T>();
        }