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using System;
using System.Collections.Generic;
using System.Linq;
using System.Runtime.InteropServices;
using System.Text;
using System.Threading;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Interop;
using System.Windows.Markup;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;
using Tango.Core.Components;
namespace Tango.PPC.Common.Controls
{
public partial class AsyncAdornerControl : ContentControl
{
private bool _loaded;
public enum GWL
{
ExStyle = -20
}
public enum WS_EX
{
Transparent = 0x20,
Layered = 0x80000
}
public enum LWA
{
ColorKey = 0x1,
Alpha = 0x2
}
[DllImport("user32.dll", EntryPoint = "GetWindowLong")]
public static extern int GetWindowLong(IntPtr hWnd, GWL nIndex);
[DllImport("user32.dll", EntryPoint = "SetWindowLong")]
public static extern int SetWindowLong(IntPtr hWnd, GWL nIndex, int dwNewLong);
[DllImport("user32.dll", EntryPoint = "SetLayeredWindowAttributes")]
public static extern bool SetLayeredWindowAttributes(IntPtr hWnd, int crKey, byte alpha, LWA dwFlags);
private Window _window;
public AsyncAdornerControl()
{
Loaded += AsyncAdornerControl_Loaded;
LayoutUpdated += AsyncAdornerControl_LayoutUpdated;
IsVisibleChanged += AsyncAdornerControl_IsVisibleChanged;
}
private void AsyncAdornerControl_IsVisibleChanged(object sender, DependencyPropertyChangedEventArgs e)
{
if (Visibility == Visibility.Visible)
{
ShowWindow();
}
else
{
HideWindow();
}
}
private void AsyncAdornerControl_LayoutUpdated(object sender, EventArgs e)
{
SyncBounds();
}
public Type ViewType
{
get { return (Type)GetValue(ViewTypeProperty); }
set { SetValue(ViewTypeProperty, value); }
}
public static readonly DependencyProperty ViewTypeProperty =
DependencyProperty.Register("ViewType", typeof(Type), typeof(AsyncAdornerControl), new PropertyMetadata(null));
protected override void OnRenderSizeChanged(SizeChangedInfo sizeInfo)
{
base.OnRenderSizeChanged(sizeInfo);
SyncBounds();
}
private void AsyncAdornerControl_Loaded(object sender, RoutedEventArgs e)
{
if (!this.IsInDesignMode())
{
if (_loaded) return;
_loaded = true;
var handle = new WindowInteropHelper(System.Windows.Application.Current.MainWindow).Handle;
System.Windows.Application.Current.MainWindow.LocationChanged += MainWindow_LocationChanged;
Visibility v = Visibility;
Type type = ViewType;
var xaml = FrameworkElementSerializer.Serialize(Content as FrameworkElement);
object dc = this.DataContext;
Content = null;
Thread thread = new Thread(() =>
{
_window = new Window();
_window.WindowStyle = WindowStyle.None;
_window.ResizeMode = ResizeMode.NoResize;
_window.ShowInTaskbar = false;
_window.AllowsTransparency = true;
_window.Background = Brushes.Transparent;
_window.WindowStartupLocation = WindowStartupLocation.Manual;
SyncBounds();
if (v != Visibility.Visible)
{
_window.Opacity = 0;
}
new WindowInteropHelper(_window).Owner = handle;
_window.ShowActivated = false;
//FrameworkElement element = Activator.CreateInstance(type) as FrameworkElement;
var cloned = FrameworkElementSerializer.Deserialize(xaml);
cloned.DataContext = dc;
_window.Content = cloned;
_window.Show();
int wl = GetWindowLong(handle, GWL.ExStyle);
wl = wl | 0x80000 | 0x20;
SetWindowLong(handle, GWL.ExStyle, wl);
SetLayeredWindowAttributes(handle, 0, 128, LWA.Alpha);
SyncBounds();
System.Windows.Threading.Dispatcher.Run();
});
thread.SetApartmentState(ApartmentState.STA);
thread.IsBackground = true;
thread.Start();
}
}
private void MainWindow_LocationChanged(object sender, EventArgs e)
{
SyncBounds();
}
private void SyncBounds()
{
if (_window != null)
{
this.BeginInvoke(() =>
{
Point location = PointToScreen(new Point(0, 0));
Size size = new Size(ActualWidth, ActualHeight);
_window.BeginInvoke(() =>
{
_window.Top = location.Y;
_window.Left = location.X;
_window.Width = size.Width;
_window.Height = size.Height;
});
});
}
}
private void HideWindow()
{
if (_window != null)
{
_window.BeginInvoke(() =>
{
_window.Hide();
});
}
}
private void ShowWindow()
{
if (_window != null)
{
_window.BeginInvoke(() =>
{
_window.Opacity = 1;
_window.Show();
});
}
}
}
}
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