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#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(
u"Try to call CoInitializeEx, but it seems COM is already "
u"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(
std::u16string font_family, float font_size) {
return std::make_unique<DWriteFont>(this, std::move(font_family), font_size);
}
std::unique_ptr<ITextLayout> DirectGraphFactory::CreateTextLayout(
std::shared_ptr<IFont> font, std::u16string text) {
return std::make_unique<DWriteTextLayout>(this, std::move(font),
std::move(text));
}
} // namespace cru::platform::graph::win::direct
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