private HRESULT _UpdateThumbnailClipping(bool attached)
{
Assert.IsNotNull(_window);
RefRECT interopRc = null;
if (attached && ThumbnailClipMargin != _EmptyThickness)
{
Thickness margin = ThumbnailClipMargin;
// Use the native GetClientRect. Window.ActualWidth and .ActualHeight include the non-client areas.
RECT physicalClientRc = NativeMethods.GetClientRect(_hwndSource.Handle);
Rect logicalClientRc = DpiHelper.DeviceRectToLogical(new Rect(physicalClientRc.Left, physicalClientRc.Top, physicalClientRc.Width, physicalClientRc.Height));
// Crop the clipping to ensure that the margin doesn't overlap itself.
if (margin.Left + margin.Right >= logicalClientRc.Width ||
margin.Top + margin.Bottom >= logicalClientRc.Height)
{
interopRc = new RefRECT(0, 0, 0, 0);
}
else
{
Rect logicalClip = new Rect(margin.Left, margin.Top, logicalClientRc.Width - margin.Left - margin.Right, logicalClientRc.Height - margin.Top - margin.Bottom);
Rect physicalClip = DpiHelper.LogicalRectToDevice(logicalClip);
interopRc = new RefRECT((int)physicalClip.Left, (int)physicalClip.Top, (int)physicalClip.Right, (int)physicalClip.Bottom);
}
}
// This will fail in the interop layer if called too early.
HRESULT hr = _taskbarList.SetThumbnailClip(_hwndSource.Handle, interopRc);
Assert.IsTrue(hr.Succeeded);
return(hr);
}
private HRESULT _UpdateThumbnailClipping(bool attached)
{
Assert.IsNotNull(_window);
RefRECT interopRc = null;
if (attached && ThumbnailClipMargin != _EmptyThickness)
{
var margin = ThumbnailClipMargin;
var physicalClientRc = NativeMethods.GetClientRect(_hwndSource.Handle);
var logicalClientRc =
DpiHelper.DeviceRectToLogical(new Rect(physicalClientRc.Left, physicalClientRc.Top, physicalClientRc.Width, physicalClientRc.Height));
if (margin.Left + margin.Right >= logicalClientRc.Width || margin.Top + margin.Bottom >= logicalClientRc.Height)
{
interopRc = new RefRECT(0, 0, 0, 0);
}
else
{
var logicalClip = new Rect(margin.Left, margin.Top, logicalClientRc.Width - margin.Left - margin.Right,
logicalClientRc.Height - margin.Top - margin.Bottom);
var physicalClip = DpiHelper.LogicalRectToDevice(logicalClip);
interopRc = new RefRECT((int)physicalClip.Left, (int)physicalClip.Top, (int)physicalClip.Right, (int)physicalClip.Bottom);
}
}
var hr = _taskbarList.SetThumbnailClip(_hwndSource.Handle, interopRc);
Assert.IsTrue(hr.Succeeded);
return(hr);
}
// Helper to generate the image - I grabbed this off Google
// somewhere. -- Chris Bordeman [email protected]
private static BitmapSource CaptureScreen(Visual target, FlowDirection flowDirection)
{
if (target == null)
{
return(null);
}
var dpiX = DpiHelper.DpiX;
var dpiY = DpiHelper.DpiY;
var bounds = VisualTreeHelper.GetDescendantBounds(target);
var dpiBounds = DpiHelper.LogicalRectToDevice(bounds);
var pixelWidth = (int)Math.Ceiling(dpiBounds.Width);
var pixelHeight = (int)Math.Ceiling(dpiBounds.Height);
if (pixelWidth < 0 || pixelHeight < 0)
{
return(null);
}
var rtb = new RenderTargetBitmap(pixelWidth, pixelHeight, dpiX, dpiY, PixelFormats.Pbgra32);
var dv = new DrawingVisual();
using (var ctx = dv.RenderOpen())
{
var vb = new VisualBrush(target);
if (flowDirection == FlowDirection.RightToLeft)
{
var transformGroup = new TransformGroup();
transformGroup.Children.Add(new ScaleTransform(-1, 1));
transformGroup.Children.Add(new TranslateTransform(bounds.Size.Width - 1, 0));
ctx.PushTransform(transformGroup);
}
ctx.DrawRectangle(vb, null, new Rect(new Point(), bounds.Size));
}
rtb.Render(dv);
return(rtb);
}
private HRESULT _UpdateThumbnailClipping(bool attached)
{
RefRECT prcClip = null;
if (attached && this.ThumbnailClipMargin != TaskbarItemInfo._EmptyThickness)
{
Thickness thumbnailClipMargin = this.ThumbnailClipMargin;
RECT clientRect = NativeMethods.GetClientRect(this._hwndSource.Handle);
Rect rect = DpiHelper.DeviceRectToLogical(new Rect((double)clientRect.Left, (double)clientRect.Top, (double)clientRect.Width, (double)clientRect.Height));
if (thumbnailClipMargin.Left + thumbnailClipMargin.Right >= rect.Width || thumbnailClipMargin.Top + thumbnailClipMargin.Bottom >= rect.Height)
{
prcClip = new RefRECT(0, 0, 0, 0);
}
else
{
Rect logicalRectangle = new Rect(thumbnailClipMargin.Left, thumbnailClipMargin.Top, rect.Width - thumbnailClipMargin.Left - thumbnailClipMargin.Right, rect.Height - thumbnailClipMargin.Top - thumbnailClipMargin.Bottom);
Rect rect2 = DpiHelper.LogicalRectToDevice(logicalRectangle);
prcClip = new RefRECT((int)rect2.Left, (int)rect2.Top, (int)rect2.Right, (int)rect2.Bottom);
}
}
return(this._taskbarList.SetThumbnailClip(this._hwndSource.Handle, prcClip));
}
