/// <summary>
/// Update the Zoom Window with a new mouse position. This means mouse have been moved and
/// the Zoom Window needs to refresh its contents.
/// </summary>
/// <param name="p">New mouse position to zoom in at</param>
private void UpdateZoomWindow(SKPoint p)
{
// Do we need to update at all?
if (!windowZoom.Visible)
{
return;
}
// Get bounds of screen area to capture
var w = windowZoom.Bounds.Width / WindowZoomFactor;
var h = windowZoom.Bounds.Height / WindowZoomFactor;
var x = (int)(p.X - w / 2f);
var y = (int)(p.Y - h / 2f);
var rect = new SKRectI(x, y, x + (int)w, y + (int)h);
// Perform the capture and update zoom window with it
var screenshot = screenService.Capture(rect);
windowZoom.UpdateZoom(screenshot, WindowZoomFactor);
// Request repaint of zoom window by using any point within it
var invalidateAtPos = new SKPointI((int)ZoomWindowLocation.X + 1, (int)ZoomWindowLocation.Y + 1);
screenService.Invalidate(invalidateAtPos);
}