MARKUS

using System;

using System.Collections.Generic;

using System.Text;

using System.Windows.Input;

using System.Windows;

using System.Windows.Controls;

using System.Windows.Shapes;

using System.Windows.Interop;

using System.Runtime.InteropServices;

using System.Windows.Media;

using System.Collections;

namespace KCOM.Controls.CustomizedWindow

{

    internal static class LocalExtensions

    {

        public static void ForWindowFromChild(this object childDependencyObject, Action<Window> action)

        {

            var element = childDependencyObject as DependencyObject;

            while (element != null)

            {

                element = VisualTreeHelper.GetParent(element);

                if (element is Window) { action(element as Window); break; }

            }

        }

        public static void ForWindowFromTemplate(this object templateFrameworkElement, Action<Window> action)

        {

            Window window = ((FrameworkElement)templateFrameworkElement).TemplatedParent as Window;

            if (window != null) action(window);

        }

        public static IntPtr GetWindowHandle(this Window window)

        {

            WindowInteropHelper helper = new WindowInteropHelper(window);

            return helper.Handle;

        }

    }

    public partial class VS2012WindowStyle

    {

        #region sizing event handlers

        void OnSizeSouth(object sender, MouseButtonEventArgs e) { OnSize(sender, SizingAction.South); }

        void OnSizeNorth(object sender, MouseButtonEventArgs e) { OnSize(sender, SizingAction.North); }

        void OnSizeEast(object sender, MouseButtonEventArgs e) { OnSize(sender, SizingAction.East); }

        void OnSizeWest(object sender, MouseButtonEventArgs e) { OnSize(sender, SizingAction.West); }

        void OnSizeNorthWest(object sender, MouseButtonEventArgs e) { OnSize(sender, SizingAction.NorthWest); }

        void OnSizeNorthEast(object sender, MouseButtonEventArgs e) { OnSize(sender, SizingAction.NorthEast); }

        void OnSizeSouthEast(object sender, MouseButtonEventArgs e) { OnSize(sender, SizingAction.SouthEast); }

        void OnSizeSouthWest(object sender, MouseButtonEventArgs e) { OnSize(sender, SizingAction.SouthWest); }

        void OnSize(object sender, SizingAction action)

        {

            if (Mouse.LeftButton == MouseButtonState.Pressed)

            {

                sender.ForWindowFromTemplate(w =>

                {

                    if (w.WindowState == WindowState.Normal)

                        DragSize(w.GetWindowHandle(), action);

                });

            }

        }

        void IconMouseLeftButtonDown(object sender, MouseButtonEventArgs e)

        {

            if (e.ClickCount > 1)

            {

                sender.ForWindowFromTemplate(w => w.Close());

            }

            else

            {

                sender.ForWindowFromTemplate(w =>

                    SendMessage(w.GetWindowHandle(), WM_SYSCOMMAND, (IntPtr)SC_KEYMENU, (IntPtr)' '));

            }

        }

        void CloseButtonClick(object sender, RoutedEventArgs e)

        {

            sender.ForWindowFromTemplate(w => w.Close());

        }

        void MinButtonClick(object sender, RoutedEventArgs e)

        {

            sender.ForWindowFromTemplate(w => w.WindowState = WindowState.Minimized);

        }

        void MaxButtonClick(object sender, RoutedEventArgs e)

        {

            sender.ForWindowFromTemplate(w => w.WindowState = (w.WindowState == WindowState.Maximized) ? WindowState.Normal : WindowState.Maximized);

        }

        void TitleBarMouseLeftButtonDown(object sender, MouseButtonEventArgs e)

        {

           // System.Diagnostics.Debug.WriteLine("Click Time " + new TimeSpan(e.Timestamp).ToString());

            if (e.ClickCount == 2 && new TimeSpan(e.Timestamp) < new TimeSpan(0, 0, 0, 3))

            {

                MaxButtonClick(sender, e);

                e.Handled = true;

            }

            else if (e.LeftButton == MouseButtonState.Pressed)

            {

                sender.ForWindowFromTemplate(w => w.DragMove());

                e.Handled = true;

            }

        }

        void TitleBarMouseMove(object sender, MouseEventArgs e)

        {

            if (e.LeftButton == MouseButtonState.Pressed)

            {

                sender.ForWindowFromTemplate(w =>

                {

                    if (w.WindowState == WindowState.Maximized)

                    {

                        w.BeginInit();

                        double adjustment = 40.0;

                        var mouse1 = e.MouseDevice.GetPosition(w);

                        System.Diagnostics.Debug.WriteLine(mouse1.X + " + " + mouse1.Y);

                        var width1 = Math.Max(w.ActualWidth - 2 * adjustment, adjustment);

                        w.WindowState = WindowState.Normal;

                        var width2 = Math.Max(w.ActualWidth - 2 * adjustment, adjustment);

                        w.Left = (mouse1.X - adjustment) * (1 - width2 / width1);

                        w.Top = -7;

                        w.EndInit();

                        w.DragMove();

                    }

                });

            }

        }

        #endregion

        #region P/Invoke

        const int WM_SYSCOMMAND = 0x112;

        const int SC_SIZE = 0xF000;

        const int SC_KEYMENU = 0xF100;

        [DllImport("user32.dll", CharSet = CharSet.Auto)]

        static extern IntPtr SendMessage(IntPtr hWnd, uint Msg, IntPtr wParam, IntPtr lParam);

        void DragSize(IntPtr handle, SizingAction sizingAction)

        {

            SendMessage(handle, WM_SYSCOMMAND, (IntPtr)(SC_SIZE + sizingAction), IntPtr.Zero);

            SendMessage(handle, 514, IntPtr.Zero, IntPtr.Zero);

        }

        public enum SizingAction

        {

            North = 3,

            South = 6,

            East = 2,

            West = 1,

            NorthEast = 5,

            NorthWest = 4,

            SouthEast = 8,

            SouthWest = 7

        }

        #endregion

    }

}