entity editor, scene graph viewer, scene viewer basics done. Can rotate, translate and scale selected models.

2026-05-11 22:24:47 -05:00
parent 5d78fd672e
commit cf916951f0
22 changed files with 864 additions and 291 deletions
--- a/src/UIManager.cpp
+++ b/src/UIManager.cpp
@@ -0,0 +1,88 @@
+//
+// Created by slinky on 5/11/26.
+//
+
+#include "UIManager.h"
+
+#include <ranges>
+
+#include "imgui.h"
+#include "imgui_impl_glfw.h"
+#include "imgui_impl_opengl3.h"
+#include "imgui_internal.h"
+
+std::unordered_map<std::string, std::shared_ptr<IUIPanel>> UIManager::uiPanels {};
+GLFWwindow* UIManager::window {nullptr};
+bool UIManager::updateDockspace {true};
+
+void UIManager::init(GLFWwindow* _window) {
+    IMGUI_CHECKVERSION();
+    ImGui::CreateContext();
+
+    ImGuiIO& io = ImGui::GetIO();
+    io.ConfigFlags |= ImGuiConfigFlags_DockingEnable;
+
+    ImGui::StyleColorsDark();
+    ImGui_ImplGlfw_InitForOpenGL(_window, true);
+    ImGui_ImplOpenGL3_Init("#version 400");
+
+    window = _window;
+}
+
+void UIManager::update(EditorContext& ctx) {
+    ImGui_ImplOpenGL3_NewFrame();
+    ImGui_ImplGlfw_NewFrame();
+
+    ImGui::NewFrame();
+    {
+        ImGuiWindowFlags window_flags = ImGuiWindowFlags_MenuBar | ImGuiWindowFlags_NoDocking;
+        ImGuiViewport* viewport = ImGui::GetMainViewport();
+        ImGui::SetNextWindowPos(viewport->Pos);
+        ImGui::SetNextWindowSize(viewport->Size);
+        ImGui::SetNextWindowViewport(viewport->ID);
+
+        ImGui::PushStyleVar(ImGuiStyleVar_WindowRounding, 0.0f);
+        ImGui::PushStyleVar(ImGuiStyleVar_WindowBorderSize, 0.0f);
+        window_flags |= ImGuiWindowFlags_NoTitleBar | ImGuiWindowFlags_NoCollapse | ImGuiWindowFlags_NoResize | ImGuiWindowFlags_NoMove;
+        window_flags |= ImGuiWindowFlags_NoBringToFrontOnFocus | ImGuiWindowFlags_NoNavFocus;
+
+        ImGui::Begin("b_engine dockspace", nullptr, window_flags);
+        ImGui::PopStyleVar(2);
+
+        ImGuiID dockspace_id = ImGui::GetID("bengine_dockspace");
+        ImGui::DockSpace(dockspace_id, ImVec2(0.0f, 0.0f), ImGuiDockNodeFlags_None);
+
+        if (updateDockspace) {
+            updateDockspace = false;
+
+            ImGui::DockBuilderRemoveNode(dockspace_id);
+            ImGui::DockBuilderAddNode(dockspace_id, ImGuiDockNodeFlags_DockSpace);
+            ImGui::DockBuilderSetNodeSize(dockspace_id, viewport->Size);
+
+            ImGuiID dock_main_id = dockspace_id;
+
+            const ImGuiID dock_id_left =
+                ImGui::DockBuilderSplitNode(dock_main_id, ImGuiDir_Left, 0.2f, nullptr, &dock_main_id);
+            const ImGuiID dock_id_right =
+                ImGui::DockBuilderSplitNode(dock_main_id, ImGuiDir_Right, 0.25f, nullptr, &dock_main_id);
+
+            ImGui::DockBuilderDockWindow("Hierarchy", dock_id_left);
+            ImGui::DockBuilderDockWindow("Inspector", dock_id_right);
+            ImGui::DockBuilderDockWindow("Scene", dock_main_id);
+
+            ImGui::DockBuilderFinish(dockspace_id);
+        }
+
+        for (const auto &panel: uiPanels | std::views::values) {
+            if (!panel) continue;
+            panel->update(ctx);
+        }
+
+        ImGui::End(); // dockspace
+    }
+    ImGui::Render();
+}
+
+void UIManager::draw() {
+    ImGui_ImplOpenGL3_RenderDrawData(ImGui::GetDrawData());
+}