Properly update the combo box selected text when the current item is changed, and...
[mono.git] / mcs / class / Managed.Windows.Forms / System.Windows.Forms / InternalWindowManager.cs
index 2cd02e793e2e2971364df295a27c366a59295872..ea58417925e84ceedb6e206a1c7e674b14f49e53 100644 (file)
@@ -32,42 +32,20 @@ using System.Runtime.InteropServices;
 
 namespace System.Windows.Forms {
 
-       internal class InternalWindowManager {
-               private Size MinTitleBarSize = new Size (115, 25);
-
+       internal abstract class InternalWindowManager {
+               private TitleButtons title_buttons;
                internal Form form;
 
-               internal TitleButton close_button;
-               internal TitleButton maximize_button;
-               internal TitleButton minimize_button;
-               
-               private ToolTip.ToolTipWindow tooltip;
-               private Timer tooltip_timer;
-               private TitleButton tooltip_hovered_button;
-               private TitleButton tooltip_hidden_button;
-               private const int tooltip_hide_interval = 3000;
-               private const int tooltip_show_interval = 1000;
-               private TitleButton [] title_buttons = new TitleButton [3];
-               
                // moving windows
                internal Point start;
                internal State state;
                protected Point clicked_point;
                private FormPos sizing_edge;
                internal Rectangle virtual_position;
-               
-               public class TitleButton {
-                       public Rectangle Rectangle;
-                       public ButtonState State;
-                       public CaptionButton Caption;
-                       public EventHandler Clicked;
 
-                       public TitleButton (CaptionButton caption, EventHandler clicked)
-                       {
-                               Caption = caption;
-                               Clicked = clicked;
-                       }
-               }
+               private Rectangle normal_bounds;
+               private Rectangle iconic_bounds;
+               
 
                public enum State {
                        Idle,
@@ -101,27 +79,99 @@ namespace System.Windows.Forms {
 
                        form.SizeChanged += new EventHandler (FormSizeChangedHandler);
 
-                       CreateButtons ();
+                       title_buttons = new TitleButtons (form);
+                       ThemeEngine.Current.ManagedWindowSetButtonLocations (this);
                }
 
                public Form Form {
                        get { return form; }
                }
+               
+               public int IconWidth {
+                       get { return TitleBarHeight - 5; }
+               }
 
-               public bool AnyPushedTitleButtons {
+               public TitleButtons TitleButtons {
+                       get {
+                               return title_buttons;
+                       }
+               }
+               internal Rectangle NormalBounds {
                        get {
-                               return (minimize_button != null && minimize_button.State == ButtonState.Pushed) ||
-                                       (maximize_button != null && maximize_button.State == ButtonState.Pushed) ||
-                                       (close_button != null && close_button.State == ButtonState.Pushed);
+                               return normal_bounds;
+                       }
+                       set {
+                               normal_bounds = value;
+                       }
+               }
+               internal Size IconicSize {
+                       get {
+                               return SystemInformation.MinimizedWindowSize;
                        }
                }
                
-               public int IconWidth {
-                       get { return TitleBarHeight - 5; }
+               internal Rectangle IconicBounds {
+                       get {
+                               if (iconic_bounds == Rectangle.Empty)
+                                       return Rectangle.Empty;
+                               Rectangle result = iconic_bounds;
+                               result.Y = Form.Parent.ClientRectangle.Bottom - iconic_bounds.Y;
+                               return result;
+                       }
+                       set {
+                               iconic_bounds = value;
+                               iconic_bounds.Y = Form.Parent.ClientRectangle.Bottom - iconic_bounds.Y;
+                       }
+               }
+
+               internal virtual Rectangle MaximizedBounds {
+                       get {
+                               return Form.Parent.ClientRectangle;
+                       }
                }
+                               
+               public virtual void UpdateWindowState (FormWindowState old_window_state, FormWindowState new_window_state, bool force)
+               {
+                       if (old_window_state == FormWindowState.Normal) {
+                               NormalBounds = form.Bounds;
+                       } else if (old_window_state == FormWindowState.Minimized) {
+                               IconicBounds = form.Bounds;
+                       }
+
+                       switch (new_window_state) {
+                       case FormWindowState.Minimized:
+                               if (IconicBounds == Rectangle.Empty) {
+                                       Size size = IconicSize;
+                                       Point location = new Point (0, Form.Parent.ClientSize.Height - size.Height);
+                                       IconicBounds = new Rectangle (location, size);
+                               }
+                               form.Bounds = IconicBounds;
+                               break;
+                       case FormWindowState.Maximized:
+                               form.Bounds = MaximizedBounds;
+                               break;
+                       case FormWindowState.Normal:
+                               form.Bounds = NormalBounds;
+                               break;
+                       }
 
-               public virtual bool HandleMessage (ref Message m)
+                       UpdateWindowDecorations (new_window_state);
+                       form.ResetCursor ();
+               }
+               
+               public virtual void UpdateWindowDecorations (FormWindowState window_state)
+               {
+                       ThemeEngine.Current.ManagedWindowSetButtonLocations (this);
+                       if (form.IsHandleCreated)
+                               XplatUI.RequestNCRecalc (form.Handle);
+               }
+               
+               public virtual bool WndProc (ref Message m)
                {
+#if debug
+                       Console.WriteLine(DateTime.Now.ToLongTimeString () + " " + this.GetType () .Name + " (Handle={0},Text={1}) received message {2}", form.IsHandleCreated ? form.Handle : IntPtr.Zero,  form.Text, m.ToString ());
+#endif
+
                        switch ((Msg)m.Msg) {
 
 
@@ -174,59 +224,97 @@ namespace System.Windows.Forms {
                                HandleNCMouseLeave (ref m);
                                break;
                        
-                       case Msg.WM_MOUSE_LEAVE:
+                       case Msg.WM_MOUSELEAVE:
                                HandleMouseLeave (ref m);
                                break;
 
                        case Msg.WM_NCCALCSIZE:
-                               HandleNCCalcSize (ref m);
-                               break;
+                               return HandleNCCalcSize (ref m);
 
                        case Msg.WM_NCPAINT:
-                               return HandleNCPaint ();
+                               return HandleNCPaint (ref m);
                        }
 
                        return false;
                }
 
-               protected virtual bool HandleNCPaint ()
+               protected virtual bool HandleNCPaint (ref Message m)
                {
-                       PaintEventArgs pe = XplatUI.PaintEventStart (form.Handle, false);
+                       PaintEventArgs pe = XplatUI.PaintEventStart (ref m, form.Handle, false);
 
                        Rectangle clip;
-                       // clip region is not correct on win32.
-                       // if (m.WParam.ToInt32 () > 1) {
-                       //      Region r = Region.FromHrgn (m.WParam);
-                       //      RectangleF rf = r.GetBounds (pe.Graphics);
-                       //      clip = new Rectangle ((int) rf.X, (int) rf.Y, (int) rf.Width, (int) rf.Height);
-                       //} else {      
-                       clip = new Rectangle (0, 0, form.Width, form.Height);
-                       //}
-
-                       ThemeEngine.Current.DrawManagedWindowDecorations (pe.Graphics, clip, this);
-                       XplatUI.PaintEventEnd (form.Handle, false);
+                       
+                       if (form.ActiveMenu != null) {
+                               Point pnt;
+
+                               pnt = GetMenuOrigin ();
+
+                               // The entire menu has to be in the clip rectangle because the 
+                               // control buttons are right-aligned and otherwise they would
+                               // stay painted when the window gets resized.
+                               clip = new Rectangle (pnt.X, pnt.Y, form.ClientSize.Width, 0);
+                               clip = Rectangle.Union (clip, pe.ClipRectangle);
+                               pe.SetClip (clip);
+                               pe.Graphics.SetClip (clip);
+
+                               form.ActiveMenu.Draw (pe, new Rectangle (pnt.X, pnt.Y, form.ClientSize.Width, 0));
+                       }
+                       if (HasBorders || IsMinimized && !(Form.IsMdiChild && IsMaximized)) {
+                               // clip region is not correct on win32.
+                               // use the entire form's area.
+                               clip = new Rectangle (0, 0, form.Width, form.Height);
+                               ThemeEngine.Current.DrawManagedWindowDecorations (pe.Graphics, clip, this);
+                       }
+                       XplatUI.PaintEventEnd (ref m, form.Handle, false);
                        return true;
                }
 
-               protected virtual void HandleNCCalcSize (ref Message m)
+               protected virtual bool HandleNCCalcSize (ref Message m)
                {
                        XplatUIWin32.NCCALCSIZE_PARAMS ncp;
+                       XplatUIWin32.RECT rect;
 
                        if (m.WParam == (IntPtr)1) {
                                ncp = (XplatUIWin32.NCCALCSIZE_PARAMS)Marshal.PtrToStructure (m.LParam,
                                                typeof (XplatUIWin32.NCCALCSIZE_PARAMS));
+                               
+                               ncp.rgrc1 = NCCalcSize (ncp.rgrc1);
 
-                               int bw = ThemeEngine.Current.ManagedWindowBorderWidth (this);
+                               Marshal.StructureToPtr (ncp, m.LParam, true);
+                       } else {
+                               rect = (XplatUIWin32.RECT) Marshal.PtrToStructure (m.LParam, typeof (XplatUIWin32.RECT));
+                               
+                               rect = NCCalcSize (rect);
+                               
+                               Marshal.StructureToPtr (rect, m.LParam, true);
+                       }
+                       
+                       return true;
+               }
 
-                               if (HasBorders) {
-                                       ncp.rgrc1.top += TitleBarHeight + bw;
-                                       ncp.rgrc1.bottom -= bw;
-                                       ncp.rgrc1.left += bw;
-                                       ncp.rgrc1.right -= bw;
-                               }
+               protected virtual XplatUIWin32.RECT NCCalcSize (XplatUIWin32.RECT proposed_window_rect)
+               {
+                       int bw = ThemeEngine.Current.ManagedWindowBorderWidth (this);
 
-                               Marshal.StructureToPtr (ncp, m.LParam, true);
+                       if (HasBorders) {
+                               proposed_window_rect.top += TitleBarHeight + bw;
+                               proposed_window_rect.bottom -= bw;
+                               proposed_window_rect.left += bw;
+                               proposed_window_rect.right -= bw;
                        }
+
+                       if (XplatUI.RequiresPositiveClientAreaSize) {
+                               // This is necessary for Linux, can't handle <= 0-sized 
+                               // client areas correctly.
+                               if (proposed_window_rect.right <= proposed_window_rect.left) {
+                                       proposed_window_rect.right += proposed_window_rect.left - proposed_window_rect.right + 1;
+                               }
+                               if (proposed_window_rect.top >= proposed_window_rect.bottom) {
+                                       proposed_window_rect.bottom += proposed_window_rect.top - proposed_window_rect.bottom + 1;
+                               }
+                       }
+
+                       return proposed_window_rect;
                }
 
                protected virtual bool HandleNCHitTest (ref Message m)
@@ -281,93 +369,23 @@ namespace System.Windows.Forms {
 
                public virtual void UpdateBorderStyle (FormBorderStyle border_style)
                {
-                       XplatUI.SetBorderStyle (form.Handle, border_style);
+                       if (form.IsHandleCreated) {
+                               XplatUI.SetBorderStyle (form.Handle, border_style);
+                       }
 
                        if (ShouldRemoveWindowManager (border_style)) {
                                form.RemoveWindowManager ();
                                return;
                        }
                                
-                       CreateButtons ();
-               }
-
-               #region ToolTip helpers
-               // Called from MouseMove if mouse is over a button
-               private void ToolTipStart (TitleButton button)
-               {
-                       tooltip_hovered_button = button;
-                       
-                       if (tooltip_hovered_button == tooltip_hidden_button)
-                               return;
-                       tooltip_hidden_button = null;
-                       
-                       if (tooltip != null && tooltip.Visible)
-                               ToolTipShow (true);
-                               
-                       if (tooltip_timer == null) {
-                                       
-                               tooltip_timer = new Timer ();
-                               tooltip_timer.Tick += new EventHandler (ToolTipTimerTick);
-                       }
-                               
-                       tooltip_timer.Interval = tooltip_show_interval;
-                       tooltip_timer.Start ();
-                       tooltip_hovered_button = button;
-               }
-               
-               private void ToolTipTimerTick (object sender, EventArgs e)
-               {
-                       if (tooltip_timer.Interval == tooltip_hide_interval) {
-                               tooltip_hidden_button = tooltip_hovered_button;
-                               ToolTipHide (false);
-                       } else {
-                               ToolTipShow (false);
-                       }
+                       ThemeEngine.Current.ManagedWindowSetButtonLocations (this);
                }
-               // Called from timer (with only_refresh = false)
-               // Called from ToolTipStart if tooltip is already shown (with only_refresh = true)
-               private void ToolTipShow (bool only_refresh)
-               {
-                       string text = Locale.GetText (tooltip_hovered_button.Caption.ToString ());
-                       
-                       tooltip_timer.Interval = tooltip_hide_interval;
-                       tooltip_timer.Enabled = true;
-                       
-                       if (only_refresh && (tooltip == null || !tooltip.Visible )) {
-                               return;
-                       }
-                               
-                       if (tooltip == null)
-                               tooltip = new ToolTip.ToolTipWindow ();
-                       else if (tooltip.Text == text && tooltip.Visible)
-                               return;
-                       else if (tooltip.Visible)
-                               tooltip.Visible = false;
 
-                       if (form.WindowState == FormWindowState.Maximized)
-                               tooltip.Present (form.MdiParent, text);
-                       else
-                               tooltip.Present (form, text);
-                       
-               }
                
-               // Called from MouseLeave (with reset_hidden_button = true)
-               // Called from MouseDown  (with reset_hidden_button = false)
-               // Called from MouseMove if mouse isn't over any button (with reset_hidden_button = false)
-               // Called from Timer if hiding (with reset_hidden_button = false)
-               private void ToolTipHide (bool reset_hidden_button)
-               {
-                       if (tooltip_timer != null)
-                               tooltip_timer.Enabled = false;
-                       if (tooltip != null && tooltip.Visible)
-                               tooltip.Visible = false;
-                       if (reset_hidden_button)
-                               tooltip_hidden_button = null;
-               }
-               #endregion
                
                public virtual void SetWindowState (FormWindowState old_state, FormWindowState window_state)
                {
+                       UpdateWindowState (old_state, window_state, false);
                }
 
                public virtual FormWindowState GetWindowState ()
@@ -402,54 +420,48 @@ namespace System.Windows.Forms {
                        return style != FormBorderStyle.FixedToolWindow && style != FormBorderStyle.SizableToolWindow;
                }
 
-               protected virtual void Activate ()
+               public bool IconRectangleContains (int x, int y)
                {
-                       form.Refresh ();
-               }
+                       if (!ShowIcon)
+                               return false;
 
-               public virtual bool IsActive ()
-               {
-                       return true;
+                       Rectangle icon = ThemeEngine.Current.ManagedWindowGetTitleBarIconArea (this);
+                       return icon.Contains (x, y);
                }
 
+               public bool ShowIcon {
+                       get {
+                               if (!Form.ShowIcon)
+                                       return false;
+                               if (!HasBorders)
+                                       return false;
+                               if (IsMinimized)
+                                       return true;
+                               if (IsToolWindow || Form.FormBorderStyle == FormBorderStyle.FixedDialog)
+                                       return false;
+                               return true;
+                       }
+               }
 
-               private void FormSizeChangedHandler (object sender, EventArgs e)
+               protected virtual void Activate ()
                {
-                       ThemeEngine.Current.ManagedWindowSetButtonLocations (this);
-                       XplatUI.InvalidateNC (form.Handle);
+                       form.Invalidate (true);
+                       form.Update ();
                }
 
-               protected void CreateButtons ()
-               {
-                       switch (form.FormBorderStyle) {
-                       case FormBorderStyle.None:
-                               close_button = null;
-                               minimize_button = null;
-                               maximize_button = null;
-                               if (IsMaximized || IsMinimized)
-                                       goto case FormBorderStyle.Sizable;
-                               break;
-                       case FormBorderStyle.FixedToolWindow:
-                       case FormBorderStyle.SizableToolWindow:
-                               close_button = new TitleButton (CaptionButton.Close, new EventHandler (CloseClicked));
-                               if (IsMaximized || IsMinimized)
-                                       goto case FormBorderStyle.Sizable;
-                               break;
-                       case FormBorderStyle.FixedSingle:
-                       case FormBorderStyle.Fixed3D:
-                       case FormBorderStyle.FixedDialog:
-                       case FormBorderStyle.Sizable:
-                               close_button = new TitleButton (CaptionButton.Close, new EventHandler (CloseClicked));
-                               minimize_button = new TitleButton (CaptionButton.Minimize, new EventHandler (MinimizeClicked));
-                               maximize_button = new TitleButton (CaptionButton.Maximize, new EventHandler (MaximizeClicked));
-                               break;
+               public virtual bool IsActive {
+                       get {
+                               return true;
                        }
+               }
 
-                       title_buttons [0] = close_button;
-                       title_buttons [1] = minimize_button;
-                       title_buttons [2] = maximize_button;
 
-                       ThemeEngine.Current.ManagedWindowSetButtonLocations (this);
+               private void FormSizeChangedHandler (object sender, EventArgs e)
+               {
+                       if (form.IsHandleCreated) {
+                               ThemeEngine.Current.ManagedWindowSetButtonLocations (this);
+                               XplatUI.InvalidateNC (form.Handle);
+                       }
                }
 
                protected virtual bool HandleRButtonDown (ref Message m)
@@ -498,6 +510,11 @@ namespace System.Windows.Forms {
                                return true;
                        }
 
+                       if (form.ActiveMenu != null && XplatUI.IsEnabled (form.Handle)) {
+                               MouseEventArgs mea = new MouseEventArgs (Form.FromParamToMouseButtons (m.WParam.ToInt32 ()), form.mouse_clicks, x, y, 0);
+                               form.ActiveMenu.OnMouseMove (form, mea);
+                       }
+
                        return true;
                        
                }
@@ -516,6 +533,11 @@ namespace System.Windows.Forms {
                        NCPointToClient (ref x, ref y);
                        FormPos pos = FormPosForCoords (x, y);
                        
+                       if (form.ActiveMenu != null && XplatUI.IsEnabled (form.Handle)) {
+                               MouseEventArgs mea = new MouseEventArgs (Form.FromParamToMouseButtons (m.WParam.ToInt32 ()), form.mouse_clicks, x, y - TitleBarHeight, 0);
+                               form.ActiveMenu.OnMouseDown (form, mea);
+                       }
+                       
                        if (pos == FormPos.TitleBar) {
                                HandleTitleBarDown (x, y);
                                return true;
@@ -556,82 +578,30 @@ namespace System.Windows.Forms {
                
                protected virtual void HandleTitleBarLeave (int x, int y)
                {
-                       foreach (TitleButton button in title_buttons) {
-                               if (button != null) {
-                                       button.State = ButtonState.Normal;
-                               }
-                       }
-                       ToolTipHide (true);
-                       return;
+                       title_buttons.MouseLeave (x, y);
                }
                
                protected virtual void HandleTitleBarMouseMove (int x, int y)
                {
-                       bool any_change = false;
-                       bool any_tooltip = false;
-                       bool any_pushed_buttons = AnyPushedTitleButtons;
-                       
-                       foreach (TitleButton button in title_buttons) {
-                               if (button == null)
-                                       continue;
-                               
-                               if (button.Rectangle.Contains (x, y)) {
-                                       if (any_pushed_buttons) {
-                                               any_change |= button.State != ButtonState.Pushed;
-                                               button.State = ButtonState.Pushed;
-                                       }
-                                       ToolTipStart (button);
-                                       any_tooltip = true;
-                               } else {
-                                       if (any_pushed_buttons) {
-                                               any_change |= button.State != ButtonState.Normal;
-                                               button.State = ButtonState.Normal;
-                                       }
-                               }
-                       }
-                       if (any_change) {
-                               if (IsMaximized && form.IsMdiChild)
-                                       XplatUI.InvalidateNC (form.MdiParent.Handle);
-                               else
-                                       XplatUI.InvalidateNC (form.Handle);
-                       }
-                       if (!any_tooltip)
-                               ToolTipHide (false);
+                       if (title_buttons.MouseMove (x, y))
+                               XplatUI.InvalidateNC (form.Handle);
                }
                
                protected virtual void HandleTitleBarUp (int x, int y)
                {
-                       foreach (TitleButton button in title_buttons) {
-                               if (button == null)
-                                       continue;
-                                       
-                               button.State = ButtonState.Normal;
-                               if (button.Rectangle.Contains (x, y)) {
-                                       button.Clicked (this, EventArgs.Empty);
-                               } 
-                       }
+                       title_buttons.MouseUp (x, y);
 
                        return;
                }
                
                protected virtual void HandleTitleBarDown (int x, int y)
                {
-                       ToolTipHide (false);
-                       
-                       foreach (TitleButton button in title_buttons) {
-                               if (button != null) {
-                                       if (button.Rectangle.Contains (x, y)) {
-                                               button.State = ButtonState.Pushed;
-                                       } else {
-                                               button.State = ButtonState.Normal;
-                                       }
-                               }
-                       }
-                       
-                       if (!AnyPushedTitleButtons && !IsMaximized){
+                       title_buttons.MouseDown (x, y);
+
+                       if (!TitleButtons.AnyPushedTitleButtons && !IsMaximized) {
                                state = State.Moving;
                                clicked_point = new Point (x, y);
-                               if (form.IsMdiChild) {
+                               if (form.Parent != null) {
                                        form.CaptureWithConfine (form.Parent);
                                } else {
                                        form.Capture = true;
@@ -662,7 +632,7 @@ namespace System.Windows.Forms {
        
                protected virtual void HandleWindowMove (Message m)
                {
-                       Point move = MouseMove (m);
+                       Point move = MouseMove (Cursor.Position);
 
                        UpdateVP (virtual_position.X + move.X, virtual_position.Y + move.Y,
                                        virtual_position.Width, virtual_position.Height);
@@ -671,9 +641,17 @@ namespace System.Windows.Forms {
                private void HandleSizing (Message m)
                {
                        Rectangle pos = virtual_position;
-                       int bw = ThemeEngine.Current.ManagedWindowBorderWidth (this);
-                       int mw = MinTitleBarSize.Width + (bw * 2);
-                       int mh = MinTitleBarSize.Height + (bw * 2);
+                       int mw;
+                       int mh;
+                       if (IsToolWindow) {
+                               int border_width = BorderWidth;
+                               mw = 2 * (border_width + Theme.ManagedWindowSpacingAfterLastTitleButton) + ThemeEngine.Current.ManagedWindowButtonSize (this).Width;
+                               mh = 2 * border_width + TitleBarHeight;
+                       } else {
+                               Size minimum_size = SystemInformation.MinWindowTrackSize;
+                               mw = minimum_size.Width;
+                               mh = minimum_size.Height;
+                       }
                        int x = Cursor.Position.X;
                        int y = Cursor.Position.Y;
 
@@ -735,7 +713,8 @@ namespace System.Windows.Forms {
                public bool IsToolWindow {
                        get {
                                if (form.FormBorderStyle == FormBorderStyle.SizableToolWindow ||
-                                               form.FormBorderStyle == FormBorderStyle.FixedToolWindow)
+                                   form.FormBorderStyle == FormBorderStyle.FixedToolWindow || 
+                                   form.GetCreateParams().IsSet (WindowExStyles.WS_EX_TOOLWINDOW))
                                        return true;
                                return false;
                        }
@@ -747,6 +726,18 @@ namespace System.Windows.Forms {
                        }
                }
 
+               public int BorderWidth {
+                       get {
+                               return ThemeEngine.Current.ManagedWindowBorderWidth (this);
+                       }
+               }
+               
+               public virtual int MenuHeight {
+                       get {
+                               return (form.Menu != null ? ThemeEngine.Current.MenuHeight : 0);
+                       }
+               }
+
                protected void UpdateVP (Rectangle r)
                {
                        UpdateVP (r.X, r.Y, r.Width, r.Height);
@@ -775,7 +766,10 @@ namespace System.Windows.Forms {
                        ClearVirtualPosition ();
 
                        form.Capture = false;
-                       form.Bounds = virtual_position;
+                       if (state == State.Moving && form.Location != virtual_position.Location) 
+                               form.Location = virtual_position.Location;
+                       else if (state == State.Sizing && form.Bounds != virtual_position)
+                               form.Bounds = virtual_position;
                        state = State.Idle;
 
                        OnWindowFinishedMoving ();
@@ -811,42 +805,16 @@ namespace System.Windows.Forms {
                        if (!button.Rectangle.IntersectsWith (clip))
                                return;
 
-                       dc.FillRectangle (SystemBrushes.Control, button.Rectangle);
-                       ControlPaint.DrawCaptionButton (dc, button.Rectangle,
-                                       button.Caption, button.State);
+                       ThemeEngine.Current.ManagedWindowDrawMenuButton (dc, button, clip, this);
                }
 
                public virtual void DrawMaximizedButtons (object sender, PaintEventArgs pe)
                {
                }
 
-               protected virtual void CloseClicked (object sender, EventArgs e)
-               {
-                       form.Close ();
-               }
-
-               private void MinimizeClicked (object sender, EventArgs e)
-               {
-                       if (GetWindowState () != FormWindowState.Minimized) {
-                               form.WindowState = FormWindowState.Minimized;
-                       } else {
-                               form.WindowState = FormWindowState.Normal;
-                       }
-               }
-
-               private void MaximizeClicked (object sender, EventArgs e)
-               {
-                       if (GetWindowState () != FormWindowState.Maximized) {
-                               form.WindowState = FormWindowState.Maximized;
-                       } else {
-                               form.WindowState = FormWindowState.Normal;
-                       }
-               }
-
-               protected Point MouseMove (Message m)
+               protected Point MouseMove (Point pos)
                {
-                       Point cp = Cursor.Position;
-                       return new Point (cp.X - start.X, cp.Y - start.Y);
+                       return new Point (pos.X - start.X, pos.Y - start.Y);
                }
 
                protected virtual void DrawVirtualPosition (Rectangle virtual_position)
@@ -871,12 +839,18 @@ namespace System.Windows.Forms {
 
                protected virtual void NCClientToNC (ref int x, ref int y) {
                        y += TitleBarHeight;
-                       y += ThemeEngine.Current.ManagedWindowBorderWidth (this);
+                       y += BorderWidth;
+                       y += MenuHeight;
+               }
+               
+               internal Point GetMenuOrigin ()
+               {
+                       return new Point (BorderWidth, BorderWidth + TitleBarHeight);
                }
                
                protected FormPos FormPosForCoords (int x, int y)
                {
-                       int bw = ThemeEngine.Current.ManagedWindowBorderWidth (this);
+                       int bw = BorderWidth;
                        if (y < TitleBarHeight + bw) {
                                //      Console.WriteLine ("A");
                                if (y > bw && x > bw &&
@@ -921,6 +895,317 @@ namespace System.Windows.Forms {
                        return FormPos.None;
                }
        }
+       internal class TitleButton
+       {
+               public Rectangle Rectangle;
+               public ButtonState State;
+               public CaptionButton Caption;
+               private EventHandler Clicked;
+               public bool Visible;
+               bool entered;
+
+               public TitleButton (CaptionButton caption, EventHandler clicked)
+               {
+                       Caption = caption;
+                       Clicked = clicked;
+               }
+               
+               public void OnClick ()
+               {
+                       if (Clicked != null) {
+                               Clicked (this, EventArgs.Empty);
+                       }
+               }
+
+               public bool Entered {
+                       get { return entered; }
+                       set { entered = value; }
+               }
+       }
+
+       internal class TitleButtons : System.Collections.IEnumerable
+       {
+               public TitleButton MinimizeButton;
+               public TitleButton MaximizeButton;
+               public TitleButton RestoreButton;
+               public TitleButton CloseButton;
+               public TitleButton HelpButton;
+
+               public TitleButton [] AllButtons;
+               public bool Visible;
+
+               private ToolTip.ToolTipWindow tooltip;
+               private Timer tooltip_timer;
+               private TitleButton tooltip_hovered_button;
+               private TitleButton tooltip_hidden_button;
+               private const int tooltip_hide_interval = 3000;
+               private const int tooltip_show_interval = 1000;
+               private Form form;
+               
+               public TitleButtons (Form frm)
+               {
+                       this.form = frm;
+                       this.Visible = true;
+                       
+                       MinimizeButton = new TitleButton (CaptionButton.Minimize, new EventHandler (ClickHandler));
+                       MaximizeButton = new TitleButton (CaptionButton.Maximize, new EventHandler (ClickHandler));
+                       RestoreButton = new TitleButton (CaptionButton.Restore, new EventHandler (ClickHandler));
+                       CloseButton = new TitleButton (CaptionButton.Close, new EventHandler (ClickHandler));
+                       HelpButton = new TitleButton (CaptionButton.Help, new EventHandler (ClickHandler));
+
+                       AllButtons = new TitleButton [] { MinimizeButton, MaximizeButton, RestoreButton, CloseButton, HelpButton };
+               }
+               
+               private void ClickHandler (object sender, EventArgs e)
+               {
+                       if (!Visible) {
+                               return;
+                       }
+                       
+                       TitleButton button = (TitleButton) sender;
+                       
+                       switch (button.Caption) {
+                               case CaptionButton.Close: 
+                                       form.Close ();
+                                       break;
+                               case CaptionButton.Help:
+                                       Console.WriteLine ("Help not implemented.");
+                                       break;
+                               case CaptionButton.Maximize:
+                                       form.WindowState = FormWindowState.Maximized;
+                                       break;
+                               case CaptionButton.Minimize:
+                                       form.WindowState = FormWindowState.Minimized;
+                                       break;
+                               case CaptionButton.Restore:
+                                       form.WindowState = FormWindowState.Normal;
+                                       break;
+                       }
+               }
+               
+               public TitleButton FindButton (int x, int y)
+               {
+                       if (!Visible) {
+                               return null;
+                       }
+                       
+                       foreach (TitleButton button in AllButtons) {
+                               if (button.Visible && button.Rectangle.Contains (x, y)) {
+                                       return button;
+                               }
+                       }
+                       return null;
+               }
+               
+               public bool AnyPushedTitleButtons {
+                       get {
+                               if (!Visible) {
+                                       return false;
+                               }
+                               
+                               foreach (TitleButton button in AllButtons) {
+                                       if (button.Visible && button.State == ButtonState.Pushed) {
+                                               return true;
+                                       }
+                               }
+                               return false;
+                       }
+               }
+
+               #region IEnumerable Members
+
+               public System.Collections.IEnumerator GetEnumerator ()
+               {
+                       return AllButtons.GetEnumerator ();
+               }
+               #endregion
+
+               #region ToolTip helpers
+               // Called from MouseMove if mouse is over a button
+               public void ToolTipStart (TitleButton button)
+               {
+                       tooltip_hovered_button = button;
+
+                       if (tooltip_hovered_button == tooltip_hidden_button)
+                               return;
+                       tooltip_hidden_button = null;
+
+                       if (tooltip != null && tooltip.Visible)
+                               ToolTipShow (true);
+
+                       if (tooltip_timer == null) {
+
+                               tooltip_timer = new Timer ();
+                               tooltip_timer.Tick += new EventHandler (ToolTipTimerTick);
+                       }
+
+                       tooltip_timer.Interval = tooltip_show_interval;
+                       tooltip_timer.Start ();
+                       tooltip_hovered_button = button;
+               }
+
+               public void ToolTipTimerTick (object sender, EventArgs e)
+               {
+                       if (tooltip_timer.Interval == tooltip_hide_interval) {
+                               tooltip_hidden_button = tooltip_hovered_button;
+                               ToolTipHide (false);
+                       } else {
+                               ToolTipShow (false);
+                       }
+               }
+               // Called from timer (with only_refresh = false)
+               // Called from ToolTipStart if tooltip is already shown (with only_refresh = true)
+               public void ToolTipShow (bool only_refresh)
+               {
+                       if (!form.Visible)
+                               return;
+
+                       string text = Locale.GetText (tooltip_hovered_button.Caption.ToString ());
+
+                       tooltip_timer.Interval = tooltip_hide_interval;
+                       tooltip_timer.Enabled = true;
+
+                       if (only_refresh && (tooltip == null || !tooltip.Visible)) {
+                               return;
+                       }
+
+                       if (tooltip == null)
+                               tooltip = new ToolTip.ToolTipWindow ();
+                       else if (tooltip.Text == text && tooltip.Visible)
+                               return;
+                       else if (tooltip.Visible)
+                               tooltip.Visible = false;
+
+                       if (form.WindowState == FormWindowState.Maximized && form.MdiParent != null)
+                               tooltip.Present (form.MdiParent, text);
+                       else
+                               tooltip.Present (form, text);
+                       
+               }
+               
+               // Called from MouseLeave (with reset_hidden_button = true)
+               // Called from MouseDown  (with reset_hidden_button = false)
+               // Called from MouseMove if mouse isn't over any button (with reset_hidden_button = false)
+               // Called from Timer if hiding (with reset_hidden_button = false)
+               public void ToolTipHide (bool reset_hidden_button)
+               {
+                       if (tooltip_timer != null)
+                               tooltip_timer.Enabled = false;
+                       if (tooltip != null && tooltip.Visible)
+                               tooltip.Visible = false;
+                       if (reset_hidden_button)
+                               tooltip_hidden_button = null;
+               }
+               #endregion
+               
+               public bool MouseMove (int x, int y)
+               {
+                       if (!Visible) {
+                               return false;
+                       }
+
+                       bool any_change = false;
+                       bool any_pushed_buttons = AnyPushedTitleButtons;
+                       bool any_tooltip = false;
+                       TitleButton over_button = FindButton (x, y);
+
+                       foreach (TitleButton button in this) {
+                               if (button == null)
+                                       continue;
+                               
+                               if (button.State == ButtonState.Inactive)
+                                       continue;
+                                       
+                               if (button == over_button) {
+                                       if (any_pushed_buttons) {
+                                               any_change |= button.State != ButtonState.Pushed;
+                                               button.State = ButtonState.Pushed;
+                                       }
+                                       ToolTipStart (button);
+                                       any_tooltip = true;
+                                       if (!button.Entered) {
+                                               button.Entered = true;
+                                               if (ThemeEngine.Current.ManagedWindowTitleButtonHasHotElementStyle (button, form))
+                                                       any_change = true;
+                                       }
+                               } else {
+                                       if (any_pushed_buttons) {
+                                               any_change |= button.State != ButtonState.Normal;
+                                               button.State = ButtonState.Normal;
+                                       }
+                                       if (button.Entered) {
+                                               button.Entered = false;
+                                               if (ThemeEngine.Current.ManagedWindowTitleButtonHasHotElementStyle (button, form))
+                                                       any_change = true;
+                                       }
+                               }
+                       }
+
+                       if (!any_tooltip)
+                               ToolTipHide (false);
+
+                       return any_change;
+               }
+
+               public void MouseDown (int x, int y)
+               {
+                       if (!Visible) {
+                               return;
+                       }
+
+                       ToolTipHide (false);
+
+                       foreach (TitleButton button in this) {
+                               if (button != null && button.State != ButtonState.Inactive) {
+                                       button.State = ButtonState.Normal;
+                               }
+                       }
+                       TitleButton clicked_button = FindButton (x, y);
+                       if (clicked_button != null && clicked_button.State != ButtonState.Inactive) {
+                               clicked_button.State = ButtonState.Pushed;
+                       }
+               }
+
+               public void MouseUp (int x, int y)
+               {
+                       if (!Visible) {
+                               return;
+                       }
+                       
+                       TitleButton clicked_button = FindButton (x, y);
+                       if (clicked_button != null && clicked_button.State != ButtonState.Inactive) {
+                               clicked_button.OnClick ();
+                       }
+
+                       foreach (TitleButton button in this) {
+                               if (button == null || button.State == ButtonState.Inactive)
+                                       continue;
+
+                               button.State = ButtonState.Normal;
+                       }
+
+                       if (clicked_button == CloseButton && !form.closing)
+                               XplatUI.InvalidateNC (form.Handle);
+                               
+                       ToolTipHide (true);
+               }
+
+               internal void MouseLeave (int x, int y)
+               {
+                       if (!Visible) {
+                               return;
+                       }
+                       
+                       foreach (TitleButton button in this) {
+                               if (button == null || button.State == ButtonState.Inactive)
+                                       continue;
+
+                               button.State = ButtonState.Normal;
+                       }
+                       
+                       ToolTipHide (true);
+               }
+       }
 }