private void ChangeDpi(Dpi dpi)
{
this.window.DpiScaleTransform = (dpi == this.systemDpi)
? Transform.Identity
: new ScaleTransform((double)dpi.X / this.systemDpi.X, (double)dpi.Y / this.systemDpi.Y);
this.window.Width = this.window.Width * dpi.X / this.currentDpi.X;
this.window.Height = this.window.Height * dpi.Y / this.currentDpi.Y;
this.currentDpi = dpi;
}
/// <summary>
/// Called when <see cref="window"/> has been initialize
/// </summary>
public void WindowInitialized()
{
var hwndSource = PresentationSource.FromVisual(this.window) as HwndSource;
if (hwndSource == null) return;
this.windowSource = hwndSource;
hwndSource.AddHook(this.HwndHook);
this.systemDpi = this.GetSystemDpi();
this.isPerMonitorDpiSupported = PerMonitorDpi.IsSupported;
if (this.isPerMonitorDpiSupported)
{
this.currentDpi = this.windowSource.GetMonitorDpi();
this.ChangeDpi(this.currentDpi);
}
else
{
this.currentDpi = this.systemDpi;
}
}
public bool Equals(Dpi other)
{
return this.X == other.X && this.Y == other.Y;
}
