Refine editor host boundary

editor/app/Host/D3D12/D3D12WindowCapture.h

@@ -0,0 +1,42 @@
+#pragma once
+
+#ifndef NOMINMAX
+#define NOMINMAX
+#endif
+
+#include <windows.h>
+#include <wincodec.h>
+#include <wrl/client.h>
+
+#include <cstdint>
+#include <filesystem>
+#include <string>
+
+namespace XCEngine::UI::Editor::Host {
+
+class D3D12WindowRenderer;
+
+class D3D12WindowCapture {
+public:
+    bool CaptureCurrentBackBufferToPng(
+        const D3D12WindowRenderer& windowRenderer,
+        const std::filesystem::path& outputPath,
+        std::string& outError);
+    void Shutdown();
+
+private:
+    bool EnsureWicFactory(std::string& outError);
+    bool EncodePng(
+        const std::filesystem::path& outputPath,
+        const std::uint8_t* pixels,
+        UINT width,
+        UINT height,
+        UINT rowPitch,
+        REFWICPixelFormatGUID pixelFormat,
+        std::string& outError) const;
+
+    Microsoft::WRL::ComPtr<IWICImagingFactory> m_wicFactory = {};
+    bool m_wicComInitialized = false;
+};
+
+} // namespace XCEngine::UI::Editor::Host