Move ShiftUI source code to ShiftOS

This'll be a lot easier to work on.

1 files changed, 707 insertions, 0 deletions

diff --git a/source/ShiftUI/Internal/Splitter.cs b/source/ShiftUI/Internal/Splitter.cs
new file mode 100644
index 0000000..761f6ee
--- /dev/null
+++ b/source/ShiftUI/Internal/Splitter.cs
@@ -0,0 +1,707 @@
+// Permission is hereby granted, free of charge, to any person obtaining
+// a copy of this software and associated documentation files (the
+// "Software"), to deal in the Software without restriction, including
+// without limitation the rights to use, copy, modify, merge, publish,
+// distribute, sublicense, and/or sell copies of the Software, and to
+// permit persons to whom the Software is furnished to do so, subject to
+// the following conditions:
+// 
+// The above copyright notice and this permission notice shall be
+// included in all copies or substantial portions of the Software.
+// 
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+//
+// Copyright (c) 2005-2008 Novell, Inc. (http://www.novell.com)
+//
+// Authors:
+//	Peter Dennis Bartok	([email protected])
+//      Ivan N. Zlatev          (contact i-nz.net)
+//
+//
+
+// COMPLETE
+
+#undef Debug
+
+using System;
+using System.ComponentModel;
+using System.Drawing;
+using System.Reflection;
+using System.Runtime.InteropServices;
+
+namespace ShiftUI {
+	[ComVisible (true)]
+	[ClassInterface (ClassInterfaceType.AutoDispatch)]
+	[DefaultEvent("SplitterMoved")]
+	[Designer("ShiftUI.Design.SplitterDesigner, " + Consts.AssemblySystem_Design, "System.ComponentModel.Design.IDesigner")]
+	[DefaultProperty("Dock")]
+	public class Splitter : Widget
+	{
+		#region Local Variables
+		static private Cursor		splitter_ns;
+		static private Cursor		splitter_we;
+		// XXX this "new" shouldn't be here.  Widget shouldn't define border_style as internal.
+		new private BorderStyle		border_style;
+		private int			min_extra;
+		private int			min_size;
+		private int                     max_size;
+		private int			splitter_size;		// Size (width or height) of our splitter control
+		private bool			horizontal;		// true if we've got a horizontal splitter
+		private Widget			affected;		// The control that the splitter resizes
+		private int			split_requested;	// If the user requests a position before we have ever laid out the doc
+		private int 			splitter_prev_move;
+		private Rectangle 		splitter_rectangle_moving;
+		private int			moving_offset;
+		#endregion	// Local Variables
+
+		#region Constructors
+		static Splitter() {
+			splitter_ns = Cursors.HSplit;
+			splitter_we = Cursors.VSplit;
+		}
+
+		public Splitter() {
+
+			min_extra = 25;
+			min_size = 25;
+			split_requested = -1;
+			splitter_size = 3;
+			horizontal = false;
+
+			SetStyle(Widgetstyles.Selectable, false);
+			Anchor = AnchorStyles.None;
+			Dock = DockStyle.Left;
+
+			Layout += new LayoutEventHandler(LayoutSplitter);
+			this.ParentChanged += new EventHandler(ReparentSplitter);
+			Cursor = splitter_we;
+		}
+		#endregion	// Constructors
+
+		#region Public Instance Properties
+		[Browsable(false)]
+		[EditorBrowsable(EditorBrowsableState.Never)]
+		public override bool AllowDrop {
+			get {
+				return base.AllowDrop;
+			}
+
+			set {
+				base.AllowDrop = value;
+			}
+		}
+
+		[Browsable(false)]
+		[DefaultValue(AnchorStyles.None)]
+		[EditorBrowsable(EditorBrowsableState.Never)]
+		public override AnchorStyles Anchor {
+			get {
+				return AnchorStyles.None;
+			}
+
+			set {
+				;	// MS doesn't set it
+			}
+		}
+
+		[Browsable(false)]
+		[EditorBrowsable(EditorBrowsableState.Never)]
+		public override Image BackgroundImage {
+			get {
+				return base.BackgroundImage;
+			}
+
+			set {
+				base.BackgroundImage = value;
+			}
+		}
+
+		[Browsable (false)]
+		[EditorBrowsable (EditorBrowsableState.Never)]
+		public override ImageLayout BackgroundImageLayout {
+			get { return base.BackgroundImageLayout; }
+			set { base.BackgroundImageLayout = value; }
+		}
+
+		[DispId(-504)]
+		[DefaultValue (BorderStyle.None)]
+		[MWFDescription("Sets the border style for the splitter")]
+		[MWFCategory("Appearance")]
+		public BorderStyle BorderStyle {
+			get {
+				return border_style;
+			}
+
+			set {
+				border_style = value;
+
+				switch(value) {
+				case BorderStyle.FixedSingle:
+					splitter_size = 4;	// We don't get motion events for 1px wide windows on X11. sigh.
+					break;
+
+				case BorderStyle.Fixed3D:
+					value = BorderStyle.None;
+					splitter_size = 3;
+					break;
+
+				case BorderStyle.None:
+					splitter_size = 3;
+					break;
+
+				default:
+					throw new InvalidEnumArgumentException (string.Format("Enum argument value '{0}' is not valid for BorderStyle", value));
+				}
+
+				base.InternalBorderStyle = value;
+			}
+		}
+
+		[DefaultValue(DockStyle.Left)]
+		[Localizable(true)]
+		public override DockStyle Dock {
+			get {
+				return base.Dock;
+			}
+
+			set {
+				if (!Enum.IsDefined (typeof (DockStyle), value) || (value == DockStyle.None) || (value == DockStyle.Fill)) {
+					throw new ArgumentException("Splitter must be docked left, top, bottom or right");
+				}
+
+				if ((value == DockStyle.Top) || (value == DockStyle.Bottom)) {
+					horizontal = true;
+					Cursor = splitter_ns;
+				} else {
+					horizontal = false;
+					Cursor = splitter_we;
+				}
+				base.Dock = value;
+			}
+		}
+
+		[Browsable(false)]
+		[EditorBrowsable(EditorBrowsableState.Never)]
+		public override Font Font {
+			get {
+				return base.Font;
+			}
+
+			set {
+				base.Font = value;
+			}
+		}
+
+		[Browsable(false)]
+		[EditorBrowsable(EditorBrowsableState.Never)]
+		public override Color ForeColor {
+			get {
+				return base.ForeColor;
+			}
+
+			set {
+				base.ForeColor = value;
+			}
+		}
+
+		[Browsable(false)]
+		[EditorBrowsable(EditorBrowsableState.Never)]
+		public new ImeMode ImeMode {
+			get {
+				return base.ImeMode;
+			}
+
+			set {
+				base.ImeMode = value;
+			}
+		}
+
+		[DefaultValue(25)]
+		[Localizable(true)]
+		[MWFDescription("Sets minimum size of undocked window")]
+		[MWFCategory("Behaviour")]
+		public int MinExtra {
+			get {
+				return min_extra;
+			}
+
+			set {
+				min_extra = value;
+			}
+		}
+
+		[DefaultValue(25)]
+		[Localizable(true)]
+		[MWFDescription("Sets minimum size of the resized control")]
+		[MWFCategory("Behaviour")]
+		public int MinSize {
+			get {
+				return min_size;
+			}
+
+			set {
+				min_size = value;
+			}
+		}
+
+		internal int MaxSize {
+			get {
+				if (this.Parent == null)
+					return 0;
+
+				if (affected == null)
+					affected = AffectedControl;
+
+				int widths = 0;
+				int heights = 0;
+				int vert_offset = 0;
+				int horiz_offset = 0;
+				foreach (Widget c in this.Parent.Widgets) {
+					if (c != affected) {
+						switch (c.Dock) {
+						case DockStyle.Left:
+						case DockStyle.Right:
+							widths += c.Width;
+
+							if (c.Location.X < this.Location.X)
+								vert_offset += c.Width;
+							break;
+						case DockStyle.Top:
+						case DockStyle.Bottom:
+							heights += c.Height;
+
+							if (c.Location.Y < this.Location.Y)
+								horiz_offset += c.Height;
+							break;
+						}
+					}
+				}
+
+				if (horizontal) {
+					moving_offset = horiz_offset;
+
+					return Parent.ClientSize.Height - heights - MinExtra;
+				} else {
+					moving_offset = vert_offset;
+
+					return Parent.ClientSize.Width - widths - MinExtra;
+				}
+			}
+		}
+		
+		[Browsable(false)]
+		[DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
+		[MWFDescription("Current splitter position")]
+		[MWFCategory("Layout")]
+		public int SplitPosition {
+			get {
+				affected = AffectedControl;
+				if (affected == null) {
+					return -1;
+				}
+
+				if (Capture) {
+					return CalculateSplitPosition();
+				}
+
+				if (horizontal) {
+					return affected.Height;
+				} else {
+					return affected.Width;
+				}
+			}
+
+			set {
+				if (value > MaxSize)
+					value = MaxSize;
+				if (value < MinSize)
+					value = MinSize;
+
+				affected = AffectedControl;
+				if (affected == null)
+					split_requested = value;
+				else {
+					if (horizontal)
+						affected.Height = value;
+					else
+						affected.Width = value;
+					OnSplitterMoved (new SplitterEventArgs (Left, Top, value, value));
+				}
+			}
+		}
+
+		[Browsable(false)]
+		[EditorBrowsable(EditorBrowsableState.Never)]
+		public new bool TabStop {
+			get { return base.TabStop; }
+			set { base.TabStop = value; }
+		}
+
+		[Bindable(false)]
+		[Browsable(false)]
+		[DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
+		[EditorBrowsable(EditorBrowsableState.Never)]
+		public override string Text {
+			get {
+				return base.Text;
+			}
+
+			set {
+				base.Text = value;
+			}
+		}
+
+		#endregion	// Public Instance Properties
+
+		#region Protected Instance Properties
+		protected override CreateParams CreateParams {
+			get {
+				return base.CreateParams;
+			}
+		}
+
+		protected override Cursor DefaultCursor {
+			get { return base.DefaultCursor; }
+		}
+
+		protected override ImeMode DefaultImeMode {
+			get {
+				return ImeMode.Disable;
+			}
+		}
+
+		protected override Size DefaultSize {
+			get {
+				return new Size (3, 3);
+			}
+		}
+		#endregion	// Protected Instance Properties
+
+		#region Public Instance Methods
+		public override string ToString() {
+			return base.ToString () + String.Format(", MinExtra: {0}, MinSize: {1}", min_extra, min_size);
+		}
+		#endregion	// Public Instance Methods
+
+		#region Protected Instance Methods
+		protected override void OnKeyDown(KeyEventArgs e) {
+			base.OnKeyDown (e);
+			if (Capture && (e.KeyCode == Keys.Escape)) {
+				Capture = false;
+				SplitterEndMove (Point.Empty, true);
+			}
+		}
+
+		protected override void OnMouseDown(MouseEventArgs e) {
+			base.OnMouseDown (e);
+
+			// Only allow if we are set up properly
+			if (affected == null)
+				affected = AffectedControl;
+			max_size = MaxSize;
+
+			if (affected == null || e.Button != MouseButtons.Left)
+				return;
+
+			Capture = true;
+			SplitterBeginMove (Parent.PointToClient (PointToScreen (new Point (e.X, e.Y))));
+		}
+
+		protected override void OnMouseMove (MouseEventArgs e)
+		{
+			base.OnMouseMove (e);
+
+			if (!Capture  || e.Button != MouseButtons.Left || affected == null)
+				return;
+
+			// We need our mouse coordinates relative to our parent
+			SplitterMove (Parent.PointToClient (PointToScreen (e.Location)));
+		}
+
+		protected override void OnMouseUp (MouseEventArgs e)
+		{
+			base.OnMouseUp (e);
+			if (!Capture || e.Button != MouseButtons.Left || affected == null) 
+				return;
+
+			SplitterEndMove (Parent.PointToClient (PointToScreen (e.Location)), false);
+			Capture = false;
+		}
+
+		private void SplitterBeginMove (Point location)
+		{
+			splitter_rectangle_moving = new Rectangle (Bounds.X, Bounds.Y,
+								   Width, Height);
+			splitter_prev_move = horizontal ? location.Y : location.X;
+		}
+
+		private void SplitterMove (Point location)
+		{
+			int currentMove = horizontal ? location.Y : location.X;
+			int delta = currentMove - splitter_prev_move;
+			Rectangle prev_location = splitter_rectangle_moving;
+			bool moved = false;
+			int min = this.MinSize + moving_offset;
+			int max = max_size + moving_offset;
+
+			if (horizontal) {
+				if (splitter_rectangle_moving.Y + delta > min && splitter_rectangle_moving.Y + delta < max) {
+					splitter_rectangle_moving.Y += delta;
+					moved = true;
+				} else {
+					// Ensure that the splitter is set to minimum or maximum position, 
+					// even if the mouse "skips".
+					//
+					if (splitter_rectangle_moving.Y + delta <= min && splitter_rectangle_moving.Y != min) {
+						splitter_rectangle_moving.Y = min;
+						moved = true;
+					} else if (splitter_rectangle_moving.Y + delta >= max && splitter_rectangle_moving.Y != max) {
+						splitter_rectangle_moving.Y = max;
+						moved = true;
+					}
+				}
+			} else {
+				if (splitter_rectangle_moving.X + delta > min && splitter_rectangle_moving.X + delta < max) {
+					splitter_rectangle_moving.X += delta;
+					moved = true;
+				} else {
+					// Ensure that the splitter is set to minimum or maximum position, 
+					// even if the mouse "skips".
+					//
+					if (splitter_rectangle_moving.X + delta <= min && splitter_rectangle_moving.X != min) {
+						splitter_rectangle_moving.X = min;
+						moved = true;
+					} else if (splitter_rectangle_moving.X + delta >= max && splitter_rectangle_moving.X != max) {
+						splitter_rectangle_moving.X = max;
+						moved = true;
+					}
+				}
+			}
+
+			if (moved) {
+				splitter_prev_move = currentMove;
+				OnSplitterMoving (new SplitterEventArgs (location.X, location.Y, 
+									 splitter_rectangle_moving.X, 
+									 splitter_rectangle_moving.Y));
+				XplatUI.DrawReversibleRectangle (this.Parent.Handle, prev_location, 1);
+				XplatUI.DrawReversibleRectangle (this.Parent.Handle, splitter_rectangle_moving, 1);
+			}
+		}
+
+		private void SplitterEndMove (Point location, bool cancel)
+		{
+			if (!cancel) {
+				// Resize the affected window
+				if (horizontal)
+					affected.Height = CalculateSplitPosition();
+				else
+					affected.Width = CalculateSplitPosition();
+			}
+
+			this.Parent.Refresh (); // to clean up the drag handle artifacts from all Widgets
+			SplitterEventArgs args = new SplitterEventArgs (location.X, location.Y, 
+									splitter_rectangle_moving.X, 
+									splitter_rectangle_moving.Y);
+			OnSplitterMoved (args);
+		}
+
+		protected virtual void OnSplitterMoved(SplitterEventArgs sevent) {
+			SplitterEventHandler eh = (SplitterEventHandler)(Events [SplitterMovedEvent]);
+			if (eh != null)
+				eh (this, sevent);
+		}
+
+		protected virtual void OnSplitterMoving(SplitterEventArgs sevent) {
+			SplitterEventHandler eh = (SplitterEventHandler)(Events [SplitterMovingEvent]);
+			if (eh != null)
+				eh (this, sevent);
+		}
+
+		protected override void SetBoundsCore(int x, int y, int width, int height, BoundsSpecified specified) {
+			// enforce our width / height
+			if (horizontal) {
+				splitter_size = height;
+				if (splitter_size < 1) {
+					splitter_size = 3;
+				}
+				base.SetBoundsCore (x, y, width, splitter_size, specified);
+			} else {
+				splitter_size = width;
+				if (splitter_size < 1) {
+					splitter_size = 3;
+				}
+				base.SetBoundsCore (x, y, splitter_size, height, specified);
+			}
+		}
+		#endregion	// Protected Instance Methods
+
+		#region Private Properties and Methods
+		private Widget AffectedControl {
+			get {
+				if (Parent == null)
+					return null;
+
+				// Doc says the first control preceeding us in the zorder 
+				for (int i = Parent.Widgets.GetChildIndex(this) + 1; i < Parent.Widgets.Count; i++) {
+					switch (Dock) {
+					case DockStyle.Top:
+						if (Top == Parent.Widgets[i].Bottom)
+							return Parent.Widgets[i];
+						break;
+					case DockStyle.Bottom:
+						if (Bottom == Parent.Widgets[i].Top)
+							return Parent.Widgets[i];
+						break;
+					case DockStyle.Left:
+						if (Left == Parent.Widgets[i].Right)
+							return Parent.Widgets[i];
+						break;
+					case DockStyle.Right:
+						if (Right == Parent.Widgets[i].Left)
+							return Parent.Widgets[i];
+						break;
+					}
+				}
+				return null;
+			}
+		}
+
+		private int CalculateSplitPosition() {
+			if (horizontal) {
+				if (Dock == DockStyle.Top)
+					return splitter_rectangle_moving.Y - affected.Top;
+				else
+					return affected.Bottom - splitter_rectangle_moving.Y - splitter_size;
+			} else {
+				if (Dock == DockStyle.Left)
+					return splitter_rectangle_moving.X - affected.Left;
+				else
+					return affected.Right - splitter_rectangle_moving.X - splitter_size;
+			}
+		}
+
+		internal override void OnPaintInternal (PaintEventArgs e) {
+			e.Graphics.FillRectangle(ThemeEngine.Current.ResPool.GetSolidBrush(this.BackColor), e.ClipRectangle);
+		}
+
+		private void LayoutSplitter(object sender, LayoutEventArgs e) {
+			affected = AffectedControl;
+			if (split_requested != -1) {
+				SplitPosition = split_requested;
+				split_requested = -1;
+			}
+		}
+
+		private void ReparentSplitter(object sender, EventArgs e) {
+			affected = null;
+		}
+
+		#endregion	// Private Properties and Methods
+
+		#region Events
+		[Browsable(false)]
+		[EditorBrowsable(EditorBrowsableState.Never)]
+		public new event EventHandler BackgroundImageChanged {
+			add { base.BackgroundImageChanged += value; }
+			remove { base.BackgroundImageChanged -= value; }
+		}
+
+		[Browsable (false)]
+		[EditorBrowsable (EditorBrowsableState.Never)]
+		public new event EventHandler BackgroundImageLayoutChanged
+		{
+			add { base.BackgroundImageLayoutChanged += value; }
+			remove { base.BackgroundImageLayoutChanged -= value; }
+		}
+
+		[Browsable(false)]
+		[EditorBrowsable(EditorBrowsableState.Never)]
+		public new event EventHandler Enter {
+			add { base.Enter += value; }
+			remove { base.Enter -= value; }
+		}
+
+		[Browsable(false)]
+		[EditorBrowsable(EditorBrowsableState.Never)]
+		public new event EventHandler FontChanged {
+			add { base.FontChanged += value; }
+			remove { base.FontChanged -= value; }
+		}
+
+		[Browsable(false)]
+		[EditorBrowsable(EditorBrowsableState.Never)]
+		public new event EventHandler ForeColorChanged {
+			add { base.ForeColorChanged += value; }
+			remove { base.ForeColorChanged -= value; }
+		}
+
+		[Browsable(false)]
+		[EditorBrowsable(EditorBrowsableState.Never)]
+		public new event EventHandler ImeModeChanged {
+			add { base.ImeModeChanged += value; }
+			remove { base.ImeModeChanged -= value; }
+		}
+
+		[Browsable(false)]
+		[EditorBrowsable(EditorBrowsableState.Never)]
+		public new event KeyEventHandler KeyDown {
+			add { base.KeyDown += value; }
+			remove { base.KeyDown -= value; }
+		}
+
+		[Browsable(false)]
+		[EditorBrowsable(EditorBrowsableState.Never)]
+		public new event KeyPressEventHandler KeyPress {
+			add { base.KeyPress += value; }
+			remove { base.KeyPress -= value; }
+		}
+
+		[Browsable(false)]
+		[EditorBrowsable(EditorBrowsableState.Never)]
+		public new event KeyEventHandler KeyUp {
+			add { base.KeyUp += value; }
+			remove { base.KeyUp -= value; }
+		}
+
+		[Browsable(false)]
+		[EditorBrowsable(EditorBrowsableState.Never)]
+		public new event EventHandler Leave {
+			add { base.Leave += value; }
+			remove { base.Leave -= value; }
+		}
+
+		[Browsable(false)]
+		[EditorBrowsable(EditorBrowsableState.Never)]
+		public new event EventHandler TabStopChanged {
+			add { base.TabStopChanged += value; }
+			remove { base.TabStopChanged -= value; }
+		}
+
+		[Browsable(false)]
+		[EditorBrowsable(EditorBrowsableState.Never)]
+		public new event EventHandler TextChanged {
+			add { base.TextChanged += value; }
+			remove { base.TextChanged -= value; }
+		}
+
+		static object SplitterMovedEvent = new object ();
+		static object SplitterMovingEvent = new object ();
+
+		public event SplitterEventHandler SplitterMoved {
+			add { Events.AddHandler (SplitterMovedEvent, value); }
+			remove { Events.RemoveHandler (SplitterMovedEvent, value); }
+		}
+
+		public event SplitterEventHandler SplitterMoving {
+			add { Events.AddHandler (SplitterMovingEvent, value); }
+			remove { Events.RemoveHandler (SplitterMovingEvent, value); }
+		}
+		#endregion	// Events
+	}
+}