private DisplayInformationEx(Size physicalSize, Size physicalResolution, DisplayInformationSource informationSource)
{
PhysicalSize = physicalSize;
PhysicalDiagonal = PhysicalSize.GetHypotenuse();
PhysicalResolution = physicalResolution;
AspectRatio = physicalSize.Height / physicalSize.Width;
if (!(AspectRatio.IsCloseEnoughTo(physicalResolution.Height / physicalResolution.Width)))
throw new ArgumentOutOfRangeException("physicalResolution", "only square pixels supported");
RawDpi = physicalResolution.Width / physicalSize.Width;
AbsoluteScaleFactorBeforeNormalizing = PhysicalSize.Width / DisplayConstants.BaselineWidthInInches;
RawPixelsPerViewPixel = GenerateRawPixelsPerViewPixel();
ViewResolution = new Size(PhysicalResolution.Width / RawPixelsPerViewPixel, PhysicalResolution.Height / RawPixelsPerViewPixel);
ViewPixelsPerInch = RawDpi / RawPixelsPerViewPixel;
// Adjust for different aspect ratio, if necessary
ViewPixelsPerHostPixel = Math.Min(ViewResolution.Width / Application.Current.Host.Content.ActualWidth,
ViewResolution.Height / Application.Current.Host.Content.ActualHeight);
HostPixelsPerViewPixel = 1 / ViewPixelsPerHostPixel;
InformationSource = informationSource;
}
private DisplayInformationEx(Size physicalSize, Size physicalResolution, DisplayInformationSource informationSource)
{
PhysicalSize = physicalSize;
PhysicalDiagonal = PhysicalSize.GetHypotenuse();
PhysicalResolution = physicalResolution;
AspectRatio = physicalSize.Height / physicalSize.Width;
if (!(AspectRatio.IsCloseEnoughTo(physicalResolution.Height / physicalResolution.Width)))
{
throw new ArgumentOutOfRangeException("physicalResolution", "only square pixels supported");
}
RawDpi = physicalResolution.Width / physicalSize.Width;
AbsoluteScaleFactorBeforeNormalizing = PhysicalSize.Width / DisplayConstants.BaselineWidthInInches;
RawPixelsPerViewPixel = GenerateRawPixelsPerViewPixel();
ViewResolution = new Size(PhysicalResolution.Width / RawPixelsPerViewPixel, PhysicalResolution.Height / RawPixelsPerViewPixel);
ViewPixelsPerInch = RawDpi / RawPixelsPerViewPixel;
// Adjust for different aspect ratio, if necessary
ViewPixelsPerHostPixel = Math.Min(ViewResolution.Width / Application.Current.Host.Content.ActualWidth,
ViewResolution.Height / Application.Current.Host.Content.ActualHeight);
HostPixelsPerViewPixel = 1 / ViewPixelsPerHostPixel;
InformationSource = informationSource;
}
private DeviceDisplayInfo(Size physicalSize, Size physicalResolution, DisplayInformationSource displayInformationSource)
{
PhysicalSize = physicalSize;
InformationSource = displayInformationSource;
PhysicalDiagonal = PhysicalSize.GetHypotenuse();
PhysicalResolution = physicalResolution;
AspectRatio = physicalSize.Height / physicalSize.Width;
if (!(AspectRatio.IsCloseEnoughTo(physicalResolution.Height / physicalResolution.Width)))
{
throw new ArgumentOutOfRangeException("physicalResolution", "only square pixels supported");
}
RawDpi = physicalResolution.Width / physicalSize.Width;
double DiagonalToWidthRatio15To9 = 9.0 / Math.Sqrt(Math.Pow(15, 2) + Math.Pow(9, 2));
//
var AbsoluteScaleFactorBeforeNormalizing = PhysicalSize.Width / BaselineWidthInInches;
// Calculate Scaling factor, Never less than 1 or more view pixels than physical pixels
var scale = Math.Max(1, AbsoluteScaleFactorBeforeNormalizing);
var idealViewWidth = Math.Min(BaselineWidthInViewPixels * scale, PhysicalResolution.Width);
var idealScale = PhysicalResolution.Width / idealViewWidth;
RawPixelsPerViewPixel = idealScale.NudgeToClosestPoint(1);
ViewResolution = new Size(PhysicalResolution.Width / RawPixelsPerViewPixel, PhysicalResolution.Height / RawPixelsPerViewPixel);
ViewPixelsPerInch = RawDpi / RawPixelsPerViewPixel;
// Adjust for different aspect ratio, if necessary
ViewPixelsPerHostPixel = Math.Min(ViewResolution.Width / Application.Current.Host.Content.ActualWidth,
ViewResolution.Height / Application.Current.Host.Content.ActualHeight);
HostPixelsPerViewPixel = 1 / ViewPixelsPerHostPixel;
}
