Merge pull request #37 from crupest/render

Refactor.

1 files changed, 49 insertions, 0 deletions

diff --git a/src/graph/window_render_target.hpp b/src/graph/window_render_target.hpp
new file mode 100644
index 00000000..9b93df19
--- /dev/null
+++ b/src/graph/window_render_target.hpp
@@ -0,0 +1,49 @@
+#pragma once
+#include "pre.hpp"
+
+#include <Windows.h>
+#include <memory>
+
+#include "base.hpp"
+
+struct IDXGISwapChain1;
+struct ID2D1Bitmap1;
+
+namespace cru::graph {
+class GraphManager;
+
+// Represents a window render target.
+class WindowRenderTarget : public Object {
+ public:
+  WindowRenderTarget(GraphManager* graph_manager, HWND hwnd);
+  WindowRenderTarget(const WindowRenderTarget& other) = delete;
+  WindowRenderTarget(WindowRenderTarget&& other) = delete;
+  WindowRenderTarget& operator=(const WindowRenderTarget& other) = delete;
+  WindowRenderTarget& operator=(WindowRenderTarget&& other) = delete;
+  ~WindowRenderTarget() override = default;
+
+ public:
+  // Get the graph manager that created the render target.
+  GraphManager* GetGraphManager() const { return graph_manager_; }
+
+  // Get the target bitmap which can be set as the ID2D1DeviceContext's target.
+  ID2D1Bitmap1* GetTargetBitmap() const { return target_bitmap_.get(); }
+
+  // Resize the underlying buffer.
+  void ResizeBuffer(int width, int height);
+
+  // Set this render target as the d2d device context's target.
+  void SetAsTarget();
+
+  // Present the data of the underlying buffer to the window.
+  void Present();
+
+ private:
+  void CreateTargetBitmap();
+
+ private:
+  GraphManager* graph_manager_;
+  std::shared_ptr<IDXGISwapChain1> dxgi_swap_chain_;
+  std::shared_ptr<ID2D1Bitmap1> target_bitmap_;
+};
+}  // namespace cru::graph