1 files changed, 447 insertions, 0 deletions
diff --git a/source/ShiftUI/System.Windows.Forms.VisualStyles/VisualStyleRenderer.cs b/source/ShiftUI/System.Windows.Forms.VisualStyles/VisualStyleRenderer.cs
new file mode 100644
index 0000000..c49e213
--- /dev/null
+++ b/source/ShiftUI/System.Windows.Forms.VisualStyles/VisualStyleRenderer.cs
@@ -0,0 +1,447 @@
+//
+// VisualStyleRenderer.cs
+//
+// 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) 2006 Novell, Inc.
+//
+// Authors:
+//	Jonathan Pobst ([email protected])
+//
+
+using System.Drawing;
+using System;
+
+namespace ShiftUI.VisualStyles
+{
+	public sealed class VisualStyleRenderer
+	{
+		private string class_name;
+		private int part;
+		private int state;
+		private IntPtr theme;
+		private int last_hresult = 0;
+		private ThemeHandleManager theme_handle_manager = new ThemeHandleManager ();
+
+		#region Public Constructors
+		public VisualStyleRenderer (string className, int part, int state)
+		{
+			theme_handle_manager.VisualStyleRenderer = this;
+			this.SetParameters (className, part, state);
+		}
+
+		public VisualStyleRenderer (VisualStyleElement element)
+			: this (element.ClassName, element.Part, element.State) {
+		}
+		#endregion
+
+		#region Public Properties
+		public String Class { get { return this.class_name; } }
+		public IntPtr Handle { get { return this.theme; } }
+		public int LastHResult { get { return this.last_hresult; } }
+		public int Part { get { return this.part; } }
+		public int State { get { return this.state; } }
+		
+		public static bool IsSupported {
+			get {
+				if (!VisualStyleInformation.IsEnabledByUser) 
+					return false;
+				
+				if (Application.VisualStyleState == VisualStyleState.ClientAndNonClientAreasEnabled ||
+					Application.VisualStyleState == VisualStyleState.ClientAreaEnabled)
+						return true;
+						
+				return false;
+			}
+		}
+		#endregion
+
+		#region Public Static Methods
+		public static bool IsElementDefined (VisualStyleElement element)
+		{
+			if (!IsSupported)
+				throw new InvalidOperationException ("Visual Styles are not enabled.");
+
+			if (IsElementKnownToBeSupported (element.ClassName, element.Part, element.State))
+				return true;
+
+			IntPtr theme = VisualStyles.UxThemeOpenThemeData (IntPtr.Zero, element.ClassName);
+			if (theme == IntPtr.Zero)
+				return false;
+			bool retval = VisualStyles.UxThemeIsThemePartDefined (theme, element.Part);
+			VisualStyles.UxThemeCloseThemeData (theme);
+
+			return retval;
+		}
+		#endregion
+
+		#region Public Instance Methods
+		public void DrawBackground (IDeviceContext dc, Rectangle bounds)
+		{
+			if (dc == null)
+				throw new ArgumentNullException ("dc");
+
+			last_hresult = VisualStyles.UxThemeDrawThemeBackground (theme, dc, this.part, this.state, bounds);
+		}
+
+		public void DrawBackground (IDeviceContext dc, Rectangle bounds, Rectangle clipRectangle)
+		{
+			if (dc == null)
+				throw new ArgumentNullException ("dc");
+
+			last_hresult = VisualStyles.UxThemeDrawThemeBackground (theme, dc, this.part, this.state, bounds, clipRectangle);
+		}
+
+		public Rectangle DrawEdge (IDeviceContext dc, Rectangle bounds, Edges edges, EdgeStyle style, EdgeEffects effects)
+		{
+			if (dc == null)
+				throw new ArgumentNullException ("dc");
+			
+			Rectangle result;
+			last_hresult = VisualStyles.UxThemeDrawThemeEdge (theme, dc, this.part, this.state, bounds, edges, style, effects, out result);
+			return result;
+		}
+
+		public void DrawImage (Graphics g, Rectangle bounds, ImageList imageList, int imageIndex)
+		{
+			if (g == null)
+				throw new ArgumentNullException ("g");
+			if (imageIndex < 0 || imageIndex > imageList.Images.Count - 1)
+				throw new ArgumentOutOfRangeException ("imageIndex");
+			if (imageList.Images[imageIndex] == null)
+				throw new ArgumentNullException ("imageIndex");
+
+			g.DrawImage (imageList.Images[imageIndex], bounds);
+		}
+
+		public void DrawImage (Graphics g, Rectangle bounds, Image image)
+		{
+			if (g == null)
+				throw new ArgumentNullException ("g");
+			if (image == null)
+				throw new ArgumentNullException ("image");
+
+			g.DrawImage (image, bounds);
+		}
+
+		public void DrawParentBackground (IDeviceContext dc, Rectangle bounds, Widget childWidget)
+		{
+			if (dc == null)
+				throw new ArgumentNullException ("dc");
+
+			last_hresult = VisualStyles.UxThemeDrawThemeParentBackground (dc, bounds, childWidget);
+		}
+
+		public void DrawText (IDeviceContext dc, Rectangle bounds, string textToDraw, bool drawDisabled, TextFormatFlags flags)
+		{
+			if (dc == null)
+				throw new ArgumentNullException ("dc");
+
+			last_hresult = VisualStyles.UxThemeDrawThemeText (theme, dc, this.part, this.state, textToDraw, flags, bounds);
+		}
+
+		public void DrawText (IDeviceContext dc, Rectangle bounds, string textToDraw, bool drawDisabled)
+		{
+			this.DrawText (dc, bounds, textToDraw, drawDisabled, TextFormatFlags.Default);
+		}
+
+		public void DrawText (IDeviceContext dc, Rectangle bounds, string textToDraw)
+		{
+			this.DrawText (dc, bounds, textToDraw, false, TextFormatFlags.Default);
+		}
+
+		public Rectangle GetBackgroundContentRectangle (IDeviceContext dc, Rectangle bounds)
+		{
+			if (dc == null)
+				throw new ArgumentNullException ("dc");
+
+			Rectangle result;
+			last_hresult = VisualStyles.UxThemeGetThemeBackgroundContentRect (theme, dc, this.part, this.state, bounds, out result);
+			return result;
+		}
+
+		public Rectangle GetBackgroundExtent (IDeviceContext dc, Rectangle contentBounds)
+		{
+			if (dc == null)
+				throw new ArgumentNullException ("dc");
+
+			Rectangle result;
+			last_hresult = VisualStyles.UxThemeGetThemeBackgroundExtent (theme, dc, this.part, this.state, contentBounds, out result);
+			return result;
+		}
+
+		[System.Security.SuppressUnmanagedCodeSecurity]
+		public Region GetBackgroundRegion (IDeviceContext dc, Rectangle bounds)
+		{
+			if (dc == null)
+				throw new ArgumentNullException ("dc");
+
+			Region result;
+			last_hresult = VisualStyles.UxThemeGetThemeBackgroundRegion (theme, dc, this.part, this.state, bounds, out result);
+			return result;
+		}
+
+		public bool GetBoolean (BooleanProperty prop)
+		{
+			if (!Enum.IsDefined (typeof (BooleanProperty), prop))
+				throw new System.ComponentModel.InvalidEnumArgumentException ("prop", (int)prop, typeof (BooleanProperty));
+
+			bool result;
+			last_hresult = VisualStyles.UxThemeGetThemeBool (theme, this.part, this.state, prop, out result);
+			return result;
+		}
+
+		public Color GetColor (ColorProperty prop)
+		{
+			if (!Enum.IsDefined (typeof (ColorProperty), prop))
+				throw new System.ComponentModel.InvalidEnumArgumentException ("prop", (int)prop, typeof (ColorProperty));
+
+			Color result;
+			last_hresult = VisualStyles.UxThemeGetThemeColor (theme, this.part, this.state, prop, out result);
+			return result;
+		}
+		
+		public int GetEnumValue (EnumProperty prop)
+		{
+			if (!Enum.IsDefined (typeof (EnumProperty), prop))
+				throw new System.ComponentModel.InvalidEnumArgumentException ("prop", (int)prop, typeof (EnumProperty));
+
+			int result;
+			last_hresult = VisualStyles.UxThemeGetThemeEnumValue (theme, this.part, this.state, prop, out result);
+			return result;
+		}
+		
+		public string GetFilename (FilenameProperty prop)
+		{
+			if (!Enum.IsDefined (typeof (FilenameProperty), prop))
+				throw new System.ComponentModel.InvalidEnumArgumentException ("prop", (int)prop, typeof (FilenameProperty));
+
+			string result;
+			last_hresult = VisualStyles.UxThemeGetThemeFilename (theme, this.part, this.state, prop, out result);
+			return result;
+
+		}
+		
+		[MonoTODO(@"I can't get MS's to return anything but null, so I can't really get this one right")]
+		public Font GetFont (IDeviceContext dc, FontProperty prop)
+		{
+			throw new NotImplementedException();
+			//if (dc == null)
+			//        throw new ArgumentNullException ("dc");
+			//if (!Enum.IsDefined (typeof (FontProperty), prop))
+			//        throw new System.ComponentModel.InvalidEnumArgumentException ("prop", (int)prop, typeof (FontProperty));
+
+			//UXTheme.LOGFONT lf = new UXTheme.LOGFONT();
+
+			//UXTheme.GetThemeFont (theme, dc.GetHdc (), this.part, this.state, (int)prop, out lf);
+			//IntPtr fontPtr = UXTheme.CreateFontIndirect(lf);
+			//dc.ReleaseHdc();
+
+			//return Font.FromLogFont(lf);
+			//return null;
+		}
+		
+		public int GetInteger (IntegerProperty prop)
+		{
+			if (!Enum.IsDefined (typeof (IntegerProperty), prop))
+				throw new System.ComponentModel.InvalidEnumArgumentException ("prop", (int)prop, typeof (IntegerProperty));
+
+			int result;
+			last_hresult = VisualStyles.UxThemeGetThemeInt (theme, this.part, this.state, prop, out result);
+			return result;
+		}
+		
+		[MonoTODO(@"MS's causes a PInvokeStackUnbalance on me, so this is not verified against MS.")]
+		public Padding GetMargins (IDeviceContext dc, MarginProperty prop)
+		{
+			if (dc == null)
+				throw new ArgumentNullException ("dc");
+			if (!Enum.IsDefined (typeof (MarginProperty), prop))
+				throw new System.ComponentModel.InvalidEnumArgumentException ("prop", (int)prop, typeof (MarginProperty));
+
+			Padding result;
+			last_hresult = VisualStyles.UxThemeGetThemeMargins (theme, dc, this.part, this.state, prop, out result);
+			return result;
+		}
+		
+		public Size GetPartSize (IDeviceContext dc, Rectangle bounds, ThemeSizeType type)
+		{
+			if (dc == null)
+				throw new ArgumentNullException ("dc");
+			if (!Enum.IsDefined (typeof (ThemeSizeType), type))
+				throw new System.ComponentModel.InvalidEnumArgumentException ("prop", (int)type, typeof (ThemeSizeType));
+
+			Size result;
+			last_hresult = VisualStyles.UxThemeGetThemePartSize (theme, dc, this.part, this.state, bounds, type, out result);
+			return result;
+		}
+
+		public Size GetPartSize (IDeviceContext dc, ThemeSizeType type)
+		{
+			if (dc == null)
+				throw new ArgumentNullException ("dc");
+			if (!Enum.IsDefined (typeof (ThemeSizeType), type))
+				throw new System.ComponentModel.InvalidEnumArgumentException ("prop", (int)type, typeof (ThemeSizeType));
+
+			Size result;
+			last_hresult = VisualStyles.UxThemeGetThemePartSize (theme, dc, this.part, this.state, type, out result);
+			return result;
+		}
+
+		public Point GetPoint (PointProperty prop)
+		{
+			if (!Enum.IsDefined (typeof (PointProperty), prop))
+				throw new System.ComponentModel.InvalidEnumArgumentException ("prop", (int)prop, typeof (PointProperty));
+
+			Point result;
+			last_hresult = VisualStyles.UxThemeGetThemePosition (theme, this.part, this.state, prop, out result);
+			return result;
+		}
+		
+		[MonoTODO(@"Can't find any values that return anything on MS to test against")]
+		public string GetString (StringProperty prop)
+		{
+			if (!Enum.IsDefined (typeof (StringProperty), prop))
+				throw new System.ComponentModel.InvalidEnumArgumentException ("prop", (int)prop, typeof (StringProperty));
+
+			string result;
+			last_hresult = VisualStyles.UxThemeGetThemeString (theme, this.part, this.state, prop, out result);
+			return result;
+		}
+		
+		public Rectangle GetTextExtent (IDeviceContext dc, Rectangle bounds, string textToDraw, TextFormatFlags flags)
+		{
+			if (dc == null)
+				throw new ArgumentNullException ("dc");
+
+			Rectangle result;
+			last_hresult = VisualStyles.UxThemeGetThemeTextExtent (theme, dc, this.part, this.state, textToDraw, flags, bounds, out result);
+			return result;
+		}
+
+		public Rectangle GetTextExtent (IDeviceContext dc, string textToDraw, TextFormatFlags flags)
+		{
+			if (dc == null)
+				throw new ArgumentNullException ("dc");
+
+			Rectangle result;
+			last_hresult = VisualStyles.UxThemeGetThemeTextExtent (theme, dc, this.part, this.state, textToDraw, flags, out result);
+			return result;
+		}
+		
+		public TextMetrics GetTextMetrics (IDeviceContext dc)
+		{
+			if (dc == null)
+				throw new ArgumentNullException ("dc", "dc cannot be null.");
+
+			TextMetrics result;
+			last_hresult = VisualStyles.UxThemeGetThemeTextMetrics (theme, dc, this.part, this.state, out result);
+			return result;
+		}
+
+		public HitTestCode HitTestBackground (IDeviceContext dc, Rectangle backgroundRectangle, IntPtr hRgn, Point pt, HitTestOptions options)
+		{
+			if (dc == null)
+				throw new ArgumentNullException ("dc");
+
+			HitTestCode result;
+			last_hresult = VisualStyles.UxThemeHitTestThemeBackground(theme, dc, this.part, this.state, options, backgroundRectangle, hRgn, pt, out result);
+			return result;
+		}
+
+		public HitTestCode HitTestBackground (Graphics g, Rectangle backgroundRectangle, Region region, Point pt, HitTestOptions options)
+		{
+			if (g == null)
+				throw new ArgumentNullException ("g");
+
+			IntPtr hRgn = region.GetHrgn(g);
+			
+			return this.HitTestBackground(g, backgroundRectangle, hRgn, pt, options);
+		}
+
+		public HitTestCode HitTestBackground (IDeviceContext dc, Rectangle backgroundRectangle, Point pt, HitTestOptions options)
+		{
+			return this.HitTestBackground (dc, backgroundRectangle, IntPtr.Zero, pt, options);
+		}
+
+		public bool IsBackgroundPartiallyTransparent ()
+		{
+			return VisualStyles.UxThemeIsThemeBackgroundPartiallyTransparent (theme, this.part, this.state);
+		}
+
+		public void SetParameters (string className, int part, int state)
+		{
+			if (theme != IntPtr.Zero)
+				last_hresult = VisualStyles.UxThemeCloseThemeData (theme);
+
+			if (!IsSupported)
+				throw new InvalidOperationException ("Visual Styles are not enabled.");
+
+			this.class_name = className;
+			this.part = part;
+			this.state = state;
+			theme = VisualStyles.UxThemeOpenThemeData (IntPtr.Zero, this.class_name);
+
+			if (IsElementKnownToBeSupported (className, part, state))
+				return;
+			if (theme == IntPtr.Zero || !VisualStyles.UxThemeIsThemePartDefined (theme, this.part))
+				throw new ArgumentException ("This element is not supported by the current visual style.");
+		}
+
+		public void SetParameters (VisualStyleElement element)
+		{
+			this.SetParameters (element.ClassName, element.Part, element.State);
+		}
+		#endregion
+
+		#region Private Properties
+		internal static IVisualStyles VisualStyles {
+			get { return VisualStylesEngine.Instance; }
+		}
+		#endregion
+
+		#region Private Instance Methods
+		internal void DrawBackgroundExcludingArea (IDeviceContext dc, Rectangle bounds, Rectangle excludedArea)
+		{
+			VisualStyles.VisualStyleRendererDrawBackgroundExcludingArea (theme, dc, part, state, bounds, excludedArea);
+		}
+		#endregion
+
+		#region Private Static Methods
+		private static bool IsElementKnownToBeSupported (string className, int part, int state)
+		{
+			return className == "STATUS" && part == 0 && state == 0;
+		}
+		#endregion
+
+		#region Private Classes
+		private class ThemeHandleManager
+		{
+			public VisualStyleRenderer VisualStyleRenderer;
+			~ThemeHandleManager ()
+			{
+				if (VisualStyleRenderer.theme == IntPtr.Zero)
+					return;
+				VisualStyles.UxThemeCloseThemeData (VisualStyleRenderer.theme);
+			}
+		}
+		#endregion
+	}
+}