flower/Source/Editor/Widgets/Dockspace.cpp

#include "Pch.h"
#include "Dockspace.h"

#include <ImGui/ImGui.h>
#include <Engine/Renderer/Renderer.h>

using namespace Flower;
using namespace Flower::UI;

DockSpace::DockSpace()
    : Widget("DockSpace")
{
    m_bShow = false;
}

void DockSpace::onTick(const RuntimeModuleTickData& tickData)
{
    static ImGuiDockNodeFlags dockspaceFlags = ImGuiDockNodeFlags_None;
    ImGuiWindowFlags windowFlags = ImGuiWindowFlags_MenuBar | ImGuiWindowFlags_NoDocking;

    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);
    ImGui::PushStyleVar(ImGuiStyleVar_FramePadding, ImVec2(0.0f, 6.0f));
    windowFlags |= ImGuiWindowFlags_NoTitleBar | ImGuiWindowFlags_NoCollapse | ImGuiWindowFlags_NoResize | ImGuiWindowFlags_NoMove;
    windowFlags |= ImGuiWindowFlags_NoBringToFrontOnFocus | ImGuiWindowFlags_NoNavFocus;

    if (dockspaceFlags & ImGuiDockNodeFlags_PassthruCentralNode)
    {
        windowFlags |= ImGuiWindowFlags_NoBackground;
    }

    ImGui::PushStyleVar(ImGuiStyleVar_WindowPadding, ImVec2(0.0f, 0.0f));
    ImGui::Begin("FlowerDockSpace", &m_bShow, windowFlags);
    ImGui::PopStyleVar();

    ImGuiIO& io = ImGui::GetIO();
    if (io.ConfigFlags & ImGuiConfigFlags_DockingEnable)
    {
        ImGuiID dockspaceId = ImGui::GetID("FlowerDockSpace");
        ImGui::DockSpace(dockspaceId, ImVec2(0.0f, 0.0f), dockspaceFlags);
    }
    
    m_mainMenu.build();
    
    ImGui::PopStyleVar(3);
    ImGui::End();
}