From 13286719ab2af228a41d7b05a0baefdbb6c6728d Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Hatvani=20Tam=C3=A1s?= <hatvanitamas09@gmail.com>
Date: Mon, 16 Mar 2026 20:13:33 +0100
Subject: [PATCH] imgui layer

---
 SakuraCore/src/imguilayer.cpp | 46 +++++++++++++++++++++++++++++++++++
 SakuraCore/src/imguilayer.h   | 21 ++++++++++++++++
 2 files changed, 67 insertions(+)
 create mode 100644 SakuraCore/src/imguilayer.cpp
 create mode 100644 SakuraCore/src/imguilayer.h

diff --git a/SakuraCore/src/imguilayer.cpp b/SakuraCore/src/imguilayer.cpp
new file mode 100644
index 0000000..f9e224c
--- /dev/null
+++ b/SakuraCore/src/imguilayer.cpp
@@ -0,0 +1,46 @@
+#include "imguilayer.h"
+#include "Application.h"
+#include "Log.h"
+#include "imgui.h"
+#include "imgui_impl_sdl3.h"
+#include "imgui_impl_sdlrenderer3.h"
+
+namespace SakuraVNE {
+ImGuiLayer::ImGuiLayer() : Layer("ImGuiLayer") {}
+
+void ImGuiLayer::OnAttach() {
+    // Imgui init
+    IMGUI_CHECKVERSION();
+    ImGui::CreateContext();
+
+    ImGuiIO &io = ImGui::GetIO();
+    io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard;
+
+    ImGui::StyleColorsDark();
+
+    ImGui_ImplSDL3_InitForSDLRenderer(Application::Get().GetSDLWindow(), Application::Get().GetSDLRenderer());
+    ImGui_ImplSDLRenderer3_Init(Application::Get().GetSDLRenderer());
+
+    LOG_INFO("Imgui layer OnAttach ran");
+}
+
+void ImGuiLayer::OnDetach() {
+    ImGui_ImplSDLRenderer3_Shutdown();
+    ImGui_ImplSDL3_Shutdown();
+    ImGui::DestroyContext();
+    LOG_WARN("Imgui on detach ran");
+}
+
+void ImGuiLayer::Begin() {
+    ImGui_ImplSDLRenderer3_NewFrame();
+    ImGui_ImplSDL3_NewFrame();
+    ImGui::NewFrame();
+}
+
+void ImGuiLayer::End() {
+    ImGuiIO &io = ImGui::GetIO();
+
+    Application &app = Application::Get();
+    io.DisplaySize = ImVec2((float)app.GetWindowData().width, (float)app.GetWindowData().height);
+}
+} // namespace SakuraVNE
diff --git a/SakuraCore/src/imguilayer.h b/SakuraCore/src/imguilayer.h
new file mode 100644
index 0000000..7526742
--- /dev/null
+++ b/SakuraCore/src/imguilayer.h
@@ -0,0 +1,21 @@
+#pragma once
+
+#include "Layer.h"
+
+namespace SakuraVNE {
+class ImGuiLayer : public Layer {
+public:
+    ImGuiLayer();
+    ~ImGuiLayer() = default;
+
+    // virtual void OnStart() override;
+    // virtual void OnFrame(float timestamp) override;
+    // virtual void OnEnd() override;
+    virtual void OnAttach() override;
+    virtual void OnDetach() override;
+    // virtual void OnEvent() override;
+
+    void Begin();
+    void End();
+};
+} // namespace SakuraVNE