//
// System.Drawing.Imaging.ImageAttributes.cs
//
// Authors:
//	Dennis Hayes (dennish@raytek.com) (stubbed out)
//	Jordi Mas i Hernàndez (jmas@softcatala.org)
//	Sanjay Gupta (gsanjay@novell.com)
//	Sebastien Pouliot  <sebastien@ximian.com>
//
// (C) 2002-4 Ximian, Inc.  http://www.ximian.com
// Copyright (C) 2004, 2006-2007 Novell, Inc (http://www.novell.com)
//
// 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.
//

using System.Drawing.Drawing2D;
using System.Runtime.InteropServices;

namespace System.Drawing.Imaging {

	[StructLayout(LayoutKind.Sequential)]
	public sealed class ImageAttributes : ICloneable, IDisposable {
		
		private IntPtr nativeImageAttr;
		
		internal IntPtr NativeObject {
			get {
				return nativeImageAttr;
			}
		}
		
		internal ImageAttributes (IntPtr native)
		{
			nativeImageAttr = native;
		}
		
		public ImageAttributes ()
		{
			Status status = GDIPlus.GdipCreateImageAttributes (out nativeImageAttr);
			GDIPlus.CheckStatus (status);
		}

		public void ClearBrushRemapTable ()
		{
			ClearRemapTable (ColorAdjustType.Brush);
		}

		//Clears the color keys for all GDI+ objects
		public void ClearColorKey () 
		{
			ClearColorKey (ColorAdjustType.Default);
		}

		public void ClearColorKey (ColorAdjustType type)
		{
			Status status = GDIPlus.GdipSetImageAttributesColorKeys (nativeImageAttr, type, false, 0, 0);
			GDIPlus.CheckStatus (status);
		}

		public void ClearColorMatrix ()
		{
			ClearColorMatrix (ColorAdjustType.Default);
		}
		
		public void ClearColorMatrix (ColorAdjustType type)
		{
			Status status = GDIPlus.GdipSetImageAttributesColorMatrix (nativeImageAttr, type, false, 
				IntPtr.Zero, IntPtr.Zero, ColorMatrixFlag.Default);
			GDIPlus.CheckStatus (status);
		}

		public void ClearGamma ()
		{
			ClearGamma (ColorAdjustType.Default);
		}

		public void ClearGamma (ColorAdjustType type)
		{
			Status status = GDIPlus.GdipSetImageAttributesGamma (nativeImageAttr, type, false, 0);
			GDIPlus.CheckStatus (status);
		}

		public void ClearNoOp ()
		{
			ClearNoOp (ColorAdjustType.Default);
		}

		public void ClearNoOp (ColorAdjustType type)
		{
			Status status = GDIPlus.GdipSetImageAttributesNoOp (nativeImageAttr, type, false);
			GDIPlus.CheckStatus (status);
		}

		public void ClearOutputChannel ()
		{
			ClearOutputChannel (ColorAdjustType.Default);
		}

		public void ClearOutputChannel (ColorAdjustType type)
		{
			Status status = GDIPlus.GdipSetImageAttributesOutputChannel (nativeImageAttr, type, false, 
				ColorChannelFlag.ColorChannelLast);
			GDIPlus.CheckStatus (status);
		}

		public void ClearOutputChannelColorProfile ()
		{
			ClearOutputChannelColorProfile (ColorAdjustType.Default);
		}

		public void ClearOutputChannelColorProfile (ColorAdjustType type)
		{
			Status status = GDIPlus.GdipSetImageAttributesOutputChannelColorProfile (nativeImageAttr, type, false, 
				null);
			GDIPlus.CheckStatus (status);
		}

		public void ClearRemapTable ()
		{
			ClearRemapTable (ColorAdjustType.Default);
		}

		public void ClearRemapTable (ColorAdjustType type)
		{
			Status status = GDIPlus.GdipSetImageAttributesRemapTable (nativeImageAttr, type, false, 0, IntPtr.Zero);
			GDIPlus.CheckStatus (status);
		}

		public void ClearThreshold ()
		{
			ClearThreshold (ColorAdjustType.Default);
		}

		public void ClearThreshold (ColorAdjustType type)
		{
			Status status = GDIPlus.GdipSetImageAttributesThreshold (nativeImageAttr, type, false, 0);
			GDIPlus.CheckStatus (status);
		}

		//Sets the color keys for all GDI+ objects
		public void SetColorKey (Color colorLow, Color colorHigh)
		{
			SetColorKey (colorLow, colorHigh, ColorAdjustType.Default);
		}

		public void SetColorMatrix (ColorMatrix colorMatrix)
		{
			SetColorMatrix (colorMatrix, ColorMatrixFlag.Default, ColorAdjustType.Default);
		}

		public void SetColorMatrix (ColorMatrix colorMatrix, ColorMatrixFlag colorMatrixFlag)
		{
			SetColorMatrix (colorMatrix, colorMatrixFlag, ColorAdjustType.Default);
		}

		public void SetColorMatrix (ColorMatrix colorMatrix, ColorMatrixFlag colorMatrixFlag, ColorAdjustType colorAdjustType)
		{
			IntPtr cm = ColorMatrix.Alloc (colorMatrix);
			try {
				Status status = GDIPlus.GdipSetImageAttributesColorMatrix (nativeImageAttr, 
					colorAdjustType, true, cm, IntPtr.Zero, colorMatrixFlag);
				GDIPlus.CheckStatus (status);
			}
			finally {
				ColorMatrix.Free (cm);
			}
		}

		public void Dispose ()
		{
			if (nativeImageAttr != IntPtr.Zero) {
				Status status = GDIPlus.GdipDisposeImageAttributes (nativeImageAttr);
				nativeImageAttr = IntPtr.Zero;
				GDIPlus.CheckStatus (status);
			}
			System.GC.SuppressFinalize (this);
		}

		~ImageAttributes ()
		{
			Dispose ();
		}
		
		public object Clone ()
		{
			IntPtr imgclone;

			Status status = GDIPlus.GdipCloneImageAttributes (nativeImageAttr, out imgclone);
			GDIPlus.CheckStatus (status);

			return new ImageAttributes (imgclone);
		}

		[MonoTODO ("Not supported by libgdiplus")]
		public void GetAdjustedPalette (ColorPalette palette, ColorAdjustType type)
		{
			IntPtr colorPalette = palette.getGDIPalette ();
			try {
				Status status = GDIPlus.GdipGetImageAttributesAdjustedPalette (nativeImageAttr, colorPalette, type);
				GDIPlus.CheckStatus (status);
	    			palette.setFromGDIPalette (colorPalette);
			} finally {
				if (colorPalette != IntPtr.Zero)
					Marshal.FreeHGlobal (colorPalette);
			}
		}

		public void SetBrushRemapTable (ColorMap[] map)
		{
			GdiColorMap gdiclr = new GdiColorMap ();						
			IntPtr clrmap, lpPointer;
			int mapsize = Marshal.SizeOf (gdiclr); 
			int size =  mapsize * map.Length;			
			clrmap = lpPointer =  Marshal.AllocHGlobal (size);	
			try {
				for (int i=0; i < map.Length; i++) {
					gdiclr.from = map[i].OldColor.ToArgb();
					gdiclr.to = map[i].NewColor.ToArgb();
				
					Marshal.StructureToPtr (gdiclr, lpPointer, false);
					lpPointer = (IntPtr) (lpPointer.ToInt64() + mapsize);						
				}
			
				Status status = GDIPlus.GdipSetImageAttributesRemapTable (nativeImageAttr, 
					ColorAdjustType.Brush, true, (uint) map.Length, clrmap);
				GDIPlus.CheckStatus (status);
			}
			finally {		
				Marshal.FreeHGlobal (clrmap);   
			}
		}

		public void SetColorKey (Color colorLow, Color colorHigh, ColorAdjustType type)
		{
			Status status = GDIPlus.GdipSetImageAttributesColorKeys (nativeImageAttr, type, true, 
				colorLow.ToArgb (), colorHigh.ToArgb ());
			GDIPlus.CheckStatus (status);
		}

		public void SetColorMatrices (ColorMatrix newColorMatrix, ColorMatrix grayMatrix)
		{
			SetColorMatrices (newColorMatrix, grayMatrix, ColorMatrixFlag.Default, ColorAdjustType.Default);
		}		
		
		public void SetColorMatrices (ColorMatrix newColorMatrix, ColorMatrix grayMatrix, ColorMatrixFlag flags)
		{
			SetColorMatrices (newColorMatrix, grayMatrix, flags, ColorAdjustType.Default);
		}
		
		public void SetColorMatrices (ColorMatrix newColorMatrix, ColorMatrix grayMatrix, ColorMatrixFlag mode, ColorAdjustType type)
		{
			Status status;
			IntPtr cm = ColorMatrix.Alloc (newColorMatrix);
			try {
				if (grayMatrix == null) {
					status = GDIPlus.GdipSetImageAttributesColorMatrix (nativeImageAttr, type, true, cm,
						IntPtr.Zero, mode);
				} else {
					IntPtr gm = ColorMatrix.Alloc (grayMatrix);
					try {
						status = GDIPlus.GdipSetImageAttributesColorMatrix (nativeImageAttr, type, true,
							cm, gm, mode);
					}
					finally {
						ColorMatrix.Free (gm);
					}
				}
			}
			finally {
				ColorMatrix.Free (cm);
			}
			GDIPlus.CheckStatus (status);
		}		

		public void SetGamma (float gamma)
		{
			SetGamma (gamma, ColorAdjustType.Default);
		}

		public void SetGamma (float gamma, ColorAdjustType coloradjust)
		{
			Status status = GDIPlus.GdipSetImageAttributesGamma (nativeImageAttr, coloradjust, true, gamma);
			GDIPlus.CheckStatus (status);						
		}	
		
		public void SetNoOp ()
		{
			SetNoOp (ColorAdjustType.Default);						
		}			
		
		public void SetNoOp (ColorAdjustType type)
		{
			Status status = GDIPlus.GdipSetImageAttributesNoOp (nativeImageAttr, type, true);
			GDIPlus.CheckStatus (status);
		}

		[MonoTODO ("Not supported by libgdiplus")]
		public void SetOutputChannel (ColorChannelFlag flags)
		{
			SetOutputChannel (flags, ColorAdjustType.Default);
		}

		[MonoTODO ("Not supported by libgdiplus")]
		public void SetOutputChannel (ColorChannelFlag flags, ColorAdjustType type)
		{
			Status status = GDIPlus.GdipSetImageAttributesOutputChannel (nativeImageAttr, type, true, flags);
			GDIPlus.CheckStatus (status);
		}

		[MonoTODO ("Not supported by libgdiplus")]
		public void SetOutputChannelColorProfile (string colorProfileFilename)
		{
			SetOutputChannelColorProfile (colorProfileFilename, ColorAdjustType.Default);
		}

		[MonoTODO ("Not supported by libgdiplus")]
		public void SetOutputChannelColorProfile (string colorProfileFilename, ColorAdjustType type)
		{
			Status status = GDIPlus.GdipSetImageAttributesOutputChannelColorProfile (nativeImageAttr, 
				type, true, colorProfileFilename);
			GDIPlus.CheckStatus (status);
		}

		public void SetRemapTable (ColorMap[] map)
		{
			SetRemapTable (map, ColorAdjustType.Default);
		}

		public void SetRemapTable (ColorMap[] map, ColorAdjustType type)
		{
			GdiColorMap gdiclr = new GdiColorMap ();						
			IntPtr clrmap, lpPointer;
			int mapsize = Marshal.SizeOf (gdiclr); 
			int size =  mapsize * map.Length;			
			clrmap = lpPointer =  Marshal.AllocHGlobal (size);	
			try {
				for (int i=0; i < map.Length; i++) {
					gdiclr.from = map[i].OldColor.ToArgb();
					gdiclr.to = map[i].NewColor.ToArgb();
				
					Marshal.StructureToPtr (gdiclr, lpPointer, false);
					lpPointer = (IntPtr) (lpPointer.ToInt64() + mapsize);						
				}
			
				Status status = GDIPlus.GdipSetImageAttributesRemapTable (nativeImageAttr, 
					type, true, (uint) map.Length, clrmap);
				GDIPlus.CheckStatus (status);
			}
			finally {
				Marshal.FreeHGlobal (clrmap);
			}
		}		

		[MonoTODO ("Not supported by libgdiplus")]
		public void SetThreshold (float threshold)
		{
			SetThreshold (threshold, ColorAdjustType.Default);
		}

		[MonoTODO ("Not supported by libgdiplus")]
		public void SetThreshold (float threshold, ColorAdjustType type)
		{
			Status status = GDIPlus.GdipSetImageAttributesThreshold (nativeImageAttr, type, true, 0);
			GDIPlus.CheckStatus (status);
		}

		public void SetWrapMode (WrapMode mode)
		{
			SetWrapMode (mode, Color.Black);
		}
		
		public void SetWrapMode (WrapMode mode, Color color)
		{
			SetWrapMode (mode, color, false);
		}

		public void SetWrapMode (WrapMode mode, Color color, bool clamp)
		{
			Status status = GDIPlus.GdipSetImageAttributesWrapMode (nativeImageAttr, mode, color.ToArgb (), clamp);
    			GDIPlus.CheckStatus (status);
		}
	}
}