public static async Task <SoftwareBitmap> CaptureVisualAsync(this UIElement element, uint captureWidth = 0, uint captureHeight = 0)
{
uint width = captureWidth;
uint height = captureHeight;
UIExecutor.Execute(() =>
{
var frameworkElement = element as FrameworkElement;
if (width == 0)
{
if (frameworkElement != null)
{
width = (uint)frameworkElement.ActualWidth;
}
}
if (height == 0)
{
if (frameworkElement != null)
{
height = (uint)frameworkElement.ActualHeight;
}
}
});
var visual = element.GetVisual();
return(await visual.CaptureVisualAsync(width, height));
}
private static ICompositionCaptureTest GetCompositionCaptureTest(this Visual visual)
{
var captureTest = default(ICompositionCaptureTest);
UIExecutor.Execute(() =>
{
var compositor = visual.Compositor;
captureTest = ((object)compositor) as ICompositionCaptureTest;
});
return(captureTest);
}
public static Visual GetVisual(this UIElement element)
{
var visual = default(Visual);
UIExecutor.Execute(() =>
{
visual = Windows.UI.Xaml.Hosting.ElementCompositionPreview.GetElementVisual(element);
while (visual.Parent != null)
{
visual = visual.Parent;
}
});
return(visual);
}
public static async Task CaptureWindowAsync(this Window window, string id)
{
var visual = default(Visual);
uint height = 0;
uint width = 0;
UIExecutor.Execute(() =>
{
height = (uint)window.Bounds.Height;
width = (uint)window.Bounds.Width;
var element = window.Content as UIElement;
visual = element.GetVisual();
while (visual.Parent != null)
{
visual = visual.Parent;
}
});
using (var bitmap = await visual.CaptureVisualAsync(width, height))
{
await bitmap.LogAsync(id);
}
}
