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public static ScreenToClient ( |
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| element | ||
| point | ||
| return | Point | |
public static Point ScreenToClient(FrameworkElement element, IntPoint point)
{
PresentationSource source = PresentationSource.FromVisual(element);
Win32Point winPt = new Win32Point(point.X, point.Y);
NativeMethods.ScreenToClient(((HwndSource)source).Handle, ref winPt);
Point offset = source.CompositionTarget.TransformFromDevice.Transform(new Point(winPt.x, winPt.y));
return(source.RootVisual.TransformToDescendant(element).Transform(offset));
}
private void AnimateBounds(IntRect screenBounds)
{
this.screenBounds = screenBounds;
this.bounds = NativeMethods.ScreenToClient(this, this.screenBounds);
TimeSpan duration = TimeSpan.FromSeconds(.2);
this.BoundsOffsetX.AnimateTo(this.bounds.Left, duration);
this.BoundsOffsetY.AnimateTo(this.bounds.Top, duration);
this.BoundsWidth.AnimateTo(this.bounds.Width, duration);
this.BoundsHeight.AnimateTo(this.bounds.Height, duration);
this.Dimensions.Visibility = Visibility.Visible;
this.Dimensions.Text = string.Format(@"{0} x {1}", this.screenBounds.Width, this.screenBounds.Height);
}
protected void UpdateBounds(IntRect screenBounds, IntPoint point)
{
Rect bounds = NativeMethods.ScreenToClient(this, screenBounds);
Point screenPoint = NativeMethods.ScreenToClient(this, point);
this.Bounds.Width = bounds.Width;
this.Bounds.Height = bounds.Height;
this.Bounds.Margin = new Thickness(bounds.Left, bounds.Top, 0, 0);
this.CenterY.Height = new GridLength(Math.Max(screenPoint.Y - bounds.Y, 0));
this.CenterX.Width = new GridLength(Math.Max(screenPoint.X - bounds.X, 0));
if (this.StretchMode == StretchMode.EastWest)
this.Dimensions.Text = string.Format(@"{0}", screenBounds.Width);
else if (this.StretchMode == StretchMode.NorthSouth)
this.Dimensions.Text = string.Format(@"{0}", screenBounds.Height);
else
this.Dimensions.Text = string.Format(@"{0} x {1}", screenBounds.Width, screenBounds.Height);
}
