DpiValue::DpiValue()
{
#if defined(_DEBUG) && defined(DPI_144)
SetDpi(144,144);
#else
SetDpi(96,96);
#endif
}
DpiValue::DpiValue()
{
#if defined(_DEBUG) && defined(DPI_DEBUG_CUSTOM)
SetDpi(DPI_DEBUG_CUSTOM,DPI_DEBUG_CUSTOM);
#else
SetDpi(96,96);
#endif
}
DpiValue::DpiValue(WPARAM wParam)
{
#if defined(_DEBUG) && defined(DPI_144)
SetDpi(144,144);
#else
SetDpi(96,96);
#endif
OnDpiChanged(wParam);
}
DpiValue::DpiValue(WPARAM wParam)
{
#if defined(_DEBUG) && defined(DPI_DEBUG_CUSTOM)
SetDpi(DPI_DEBUG_CUSTOM,DPI_DEBUG_CUSTOM);
#else
SetDpi(96,96);
#endif
OnDpiChanged(wParam);
}
void DpiValue::OnDpiChanged(WPARAM wParam)
{
// That comes from WM_DPICHANGED notification message
if ((int)LOWORD(wParam) > 0 && (int)HIWORD(wParam) > 0)
{
SetDpi((int)LOWORD(wParam), (int)HIWORD(wParam));
_ASSERTE(Ydpi >= 96 && Xdpi >= 96);
}
}
void
FrameworkView::UpdateLogicalDPI()
{
ComPtr<ABI::Windows::Graphics::Display::IDisplayPropertiesStatics> dispProps;
HRESULT hr = GetActivationFactory(HStringReference(RuntimeClass_Windows_Graphics_Display_DisplayProperties).Get(),
dispProps.GetAddressOf());
AssertHRESULT(hr);
FLOAT value;
AssertHRESULT(dispProps->get_LogicalDpi(&value));
SetDpi(value);
}
static std::shared_ptr<CanvasSwapChainDrawingSessionAdapter> Create(
ICanvasDevice* owner,
IDXGISwapChain1* swapChainResource,
D2D1_COLOR_F const& clearColor,
float dpi,
ID2D1DeviceContext1** outDeviceContext)
{
auto deviceContext = As<ICanvasDeviceInternal>(owner)->CreateDeviceContextForDrawingSession();
DXGI_SWAP_CHAIN_DESC1 swapChainDescription;
ThrowIfFailed(swapChainResource->GetDesc1(&swapChainDescription));
ComPtr<IDXGISurface2> backBufferSurface;
ThrowIfFailed(swapChainResource->GetBuffer(0, IID_PPV_ARGS(&backBufferSurface)));
ComPtr<ID2D1Bitmap1> d2dTargetBitmap;
D2D1_BITMAP_PROPERTIES1 bitmapProperties = D2D1::BitmapProperties1();
bitmapProperties.bitmapOptions = D2D1_BITMAP_OPTIONS_TARGET | D2D1_BITMAP_OPTIONS_CANNOT_DRAW;
bitmapProperties.pixelFormat.format = swapChainDescription.Format;
bitmapProperties.pixelFormat.alphaMode = ConvertDxgiAlphaModeToD2DAlphaMode(swapChainDescription.AlphaMode);
ThrowIfFailed(deviceContext->CreateBitmapFromDxgiSurface(backBufferSurface.Get(), &bitmapProperties, &d2dTargetBitmap));
deviceContext->SetTarget(d2dTargetBitmap.Get());
deviceContext->BeginDraw();
//
// If this function fails then we need to call EndDraw
//
auto endDrawWarden = MakeScopeWarden([&] { ThrowIfFailed(deviceContext->EndDraw()); });
ThrowIfFailed(deviceContext.CopyTo(outDeviceContext));
auto adapter = std::make_shared<CanvasSwapChainDrawingSessionAdapter>();
deviceContext->Clear(&clearColor);
deviceContext->SetDpi(dpi, dpi);
//
// This function can't fail now, so we can dismiss the end draw warden.
//
endDrawWarden.Dismiss();
return adapter;
}
void DpiValue::SetDpi(const DpiValue& dpi)
{
SetDpi(dpi.Xdpi, dpi.Ydpi);
}
DpiValue::DpiValue(int xdpi, int ydpi)
{
SetDpi(xdpi, ydpi);
}
