FrostEd.cpp

#include "FrostEd.h"
#include "Modules/ModuleManager.h"
#include "Logging/LogMacros.h"
#include "Windows/WindowsApplication.h"
#include "HierarchyModule.h"

#include "imgui.h"

void FFrostEd::Initialize()
{
    FROST_LOG_INFO("Initializing FrostEd...");

    // Editor initialization
    // ...

    FHierarchyModule& HierarchyModule = FModuleManager::Get().LoadModule<FHierarchyModule>("Hierarchy");

    FWindowsApplication::Get()->GetLayerStack()->PushOverlay(new FFrostEd());

    FROST_LOG_INFO("Initialized FrostEd!");
}

void FFrostEd::OnAttach()
{
    // Setup the editor
    // ...
}

void FFrostEd::OnImGuiRender()
{
    static bool OptFullscreen = true;
    static bool OptPadding = false;

    static ImGuiDockNodeFlags DockspaceFlags = ImGuiDockNodeFlags_None;

    ImGuiWindowFlags WindowFlags = ImGuiWindowFlags_MenuBar | ImGuiWindowFlags_NoDocking;

    if (OptFullscreen)
    {
        const ImGuiViewport* Viewport = ImGui::GetMainViewport();

        ImGui::SetNextWindowPos(Viewport->WorkPos);
        ImGui::SetNextWindowSize(Viewport->WorkSize);

        ImGui::SetNextWindowViewport(Viewport->ID);

        ImGui::PushStyleVar(ImGuiStyleVar_WindowRounding, 0.0f);
        ImGui::PushStyleVar(ImGuiStyleVar_WindowBorderSize, 0.0f);

        WindowFlags |= ImGuiWindowFlags_NoTitleBar | ImGuiWindowFlags_NoCollapse | ImGuiWindowFlags_NoResize | ImGuiWindowFlags_NoMove;
        WindowFlags |= ImGuiWindowFlags_NoBringToFrontOnFocus | ImGuiWindowFlags_NoNavFocus;
    }
    else
    {
        DockspaceFlags &= ~ImGuiDockNodeFlags_PassthruCentralNode;
    }

    if (DockspaceFlags & ImGuiDockNodeFlags_PassthruCentralNode)
    {
        WindowFlags |= ImGuiWindowFlags_NoBackground;
    }

    if (!OptPadding)
    {
        ImGui::PushStyleVar(ImGuiStyleVar_WindowPadding, ImVec2(0.0f, 0.0f));
    }

    ImGui::Begin("FrostEd", (bool*)true, WindowFlags);

    if (!OptPadding)
    {
        ImGui::PopStyleVar();
    }

    if (OptFullscreen)
    {
        ImGui::PopStyleVar(2);
    }

    ImGuiIO& IO = ImGui::GetIO();
    if (IO.ConfigFlags & ImGuiConfigFlags_DockingEnable)
    {
        ImGuiID DockspaceID = ImGui::GetID("FrostEd");
        ImGui::DockSpace(DockspaceID, ImVec2(0.0f, 0.0f), DockspaceFlags);
    }

    // Render the editor
    // ...

    ImGui::End();
}

void FFrostEd::OnDetach()
{
    // Cleanup the editor
    // ...

    FModuleManager::Get().UnloadModule("Hierarchy");
}