First commit.

include/hdk/is3r.hpp

@@ -0,0 +1,55 @@
+#pragma once
+
+#include <hdk/sdl.hpp>
+#include <imgui.h>
+#include <imgui_impl_sdl3.h>
+#include <imgui_impl_sdlrenderer3.h>
+
+#include <hdk/sdl/Application.hpp>
+
+namespace hdk::is3r {
+  class Is3rWindowContext;
+  class Is3rApp : public sdl::ProtectedApp {
+    public:
+      virtual SDL_AppResult Event(SDL_Event* event) override {
+        ImGui_ImplSDL3_ProcessEvent(event);
+        return ProtectedApp::Event(event);
+      }
+
+      Is3rWindowContext CreateWindow(const char* title, int width, int height, SDL_WindowFlags flags);
+  };
+
+  struct Is3rWindowData {
+      sdl::Window window { nullptr };
+      sdl::Renderer renderer { nullptr };
+      sdl::evt::WindowEvents window_events;
+      grid::eps::Conduit<> on_iterate;
+      grid::eps::Conduit<> on_frame;
+      grid::eps::TapScope taps;
+  };
+
+  class Is3rWindowContext : public grid::SharedPtrWrapper<Is3rWindowData> {
+    public:
+      using SharedPtrWrapper<Is3rWindowData>::SharedPtrWrapper;
+
+      static Is3rWindowContext Create(const char* title, int width, int height, SDL_WindowFlags flags) {
+        auto [window, renderer] = sdl::CreateWindowAndRenderer(title, width, height, flags);
+        if (!window || !renderer) {
+          SDL_Log("Failed to create window or renderer: %s", SDL_GetError());
+          return Is3rWindowContext(nullptr);
+        }
+        auto* data = new Is3rWindowData{.window = window, .renderer = renderer};
+        auto context = Is3rWindowContext(get_or_cache(data, [](Is3rWindowData* data) { delete data; }));
+        return context;
+      }
+  };
+
+  inline Is3rWindowContext Is3rApp::CreateWindow(const char* title, int width, int height, SDL_WindowFlags flags) {
+    auto ctx = Is3rWindowContext::Create(title, width, height, flags);
+    auto wid = ctx->window.GetID();
+    ctx->taps << events.Window[wid] %  ctx->window_events;
+    ctx->taps << OnIterate %  ctx->on_iterate;
+    return ctx;
+  }
+
+}