1 files changed, 107 insertions, 0 deletions
diff --git a/src/win/graph/direct/Factory.cpp b/src/win/graph/direct/Factory.cpp
new file mode 100644
index 00000000..d9213994
--- /dev/null
+++ b/src/win/graph/direct/Factory.cpp
@@ -0,0 +1,107 @@
+#include "cru/win/graph/direct/Factory.hpp"
+
+#include "cru/common/Logger.hpp"
+#include "cru/win/graph/direct/Brush.hpp"
+#include "cru/win/graph/direct/Exception.hpp"
+#include "cru/win/graph/direct/Font.hpp"
+#include "cru/win/graph/direct/Geometry.hpp"
+#include "cru/win/graph/direct/TextLayout.hpp"
+
+#include <cstdlib>
+#include <utility>
+
+namespace cru::platform::graph::win::direct {
+namespace {
+void InitializeCom() {
+  const auto hresult = ::CoInitializeEx(nullptr, COINIT_APARTMENTTHREADED);
+  if (FAILED(hresult)) {
+    throw HResultError(hresult, "Failed to call CoInitializeEx.");
+  }
+  if (hresult == S_FALSE) {
+    log::Debug(
+        "Try to call CoInitializeEx, but it seems COM is already "
+        "initialized.");
+  }
+}
+
+void UninitializeCom() { ::CoUninitialize(); }
+}  // namespace
+
+DirectGraphFactory::DirectGraphFactory() {
+  // TODO! Detect repeated creation. Because I don't think we can create two d2d
+  // and dwrite factory so we need to prevent the "probably dangerous" behavior.
+
+  InitializeCom();
+
+  UINT creation_flags = D3D11_CREATE_DEVICE_BGRA_SUPPORT;
+
+#ifdef CRU_DEBUG
+  creation_flags |= D3D11_CREATE_DEVICE_DEBUG;
+#endif
+
+  const D3D_FEATURE_LEVEL feature_levels[] = {
+      D3D_FEATURE_LEVEL_11_1, D3D_FEATURE_LEVEL_11_0, D3D_FEATURE_LEVEL_10_1,
+      D3D_FEATURE_LEVEL_10_0, D3D_FEATURE_LEVEL_9_3,  D3D_FEATURE_LEVEL_9_2,
+      D3D_FEATURE_LEVEL_9_1};
+
+  Microsoft::WRL::ComPtr<ID3D11DeviceContext> d3d11_device_context;
+
+  ThrowIfFailed(D3D11CreateDevice(
+      nullptr, D3D_DRIVER_TYPE_HARDWARE, nullptr, creation_flags,
+      feature_levels, ARRAYSIZE(feature_levels), D3D11_SDK_VERSION,
+      &d3d11_device_, nullptr, &d3d11_device_context));
+
+  Microsoft::WRL::ComPtr<IDXGIDevice> dxgi_device;
+  ThrowIfFailed(d3d11_device_->QueryInterface(dxgi_device.GetAddressOf()));
+
+  ThrowIfFailed(D2D1CreateFactory(D2D1_FACTORY_TYPE_SINGLE_THREADED,
+                                  IID_PPV_ARGS(&d2d1_factory_)));
+
+  ThrowIfFailed(d2d1_factory_->CreateDevice(dxgi_device.Get(), &d2d1_device_));
+
+  d2d1_device_context_ = CreateD2D1DeviceContext();
+
+  // Identify the physical adapter (GPU or card) this device is runs on.
+  Microsoft::WRL::ComPtr<IDXGIAdapter> dxgi_adapter;
+  ThrowIfFailed(dxgi_device->GetAdapter(&dxgi_adapter));
+
+  // Get the factory object that created the DXGI device.
+  ThrowIfFailed(dxgi_adapter->GetParent(IID_PPV_ARGS(&dxgi_factory_)));
+
+  ThrowIfFailed(DWriteCreateFactory(
+      DWRITE_FACTORY_TYPE_SHARED, __uuidof(IDWriteFactory),
+      reinterpret_cast<IUnknown**>(dwrite_factory_.GetAddressOf())));
+
+  ThrowIfFailed(dwrite_factory_->GetSystemFontCollection(
+      &dwrite_system_font_collection_));
+}
+
+DirectGraphFactory::~DirectGraphFactory() { UninitializeCom(); }
+
+Microsoft::WRL::ComPtr<ID2D1DeviceContext>
+DirectGraphFactory::CreateD2D1DeviceContext() {
+  Microsoft::WRL::ComPtr<ID2D1DeviceContext> d2d1_device_context;
+  ThrowIfFailed(d2d1_device_->CreateDeviceContext(
+      D2D1_DEVICE_CONTEXT_OPTIONS_NONE, &d2d1_device_context));
+  return d2d1_device_context;
+}
+
+std::unique_ptr<ISolidColorBrush> DirectGraphFactory::CreateSolidColorBrush() {
+  return std::make_unique<D2DSolidColorBrush>(this);
+}
+
+std::unique_ptr<IGeometryBuilder> DirectGraphFactory::CreateGeometryBuilder() {
+  return std::make_unique<D2DGeometryBuilder>(this);
+}
+
+std::unique_ptr<IFont> DirectGraphFactory::CreateFont(
+    const std::string_view& font_family, float font_size) {
+  return std::make_unique<DWriteFont>(this, font_family, font_size);
+}
+
+std::unique_ptr<ITextLayout> DirectGraphFactory::CreateTextLayout(
+    std::shared_ptr<IFont> font, std::string text) {
+  return std::make_unique<DWriteTextLayout>(this, std::move(font),
+                                            std::move(text));
+}
+}  // namespace cru::platform::graph::win::direct