Move ShiftUI source code to ShiftOS

This'll be a lot easier to work on.

1 files changed, 338 insertions, 0 deletions

diff --git a/source/ShiftUI/Internal/ImageListStreamer.cs b/source/ShiftUI/Internal/ImageListStreamer.cs
new file mode 100644
index 0000000..3186747
--- /dev/null
+++ b/source/ShiftUI/Internal/ImageListStreamer.cs
@@ -0,0 +1,338 @@
+// 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) 2002-2006 Novell, Inc.
+//
+// Authors:
+//	Jackson Harper ([email protected])
+//	Gonzalo Paniagua Javier ([email protected])
+//
+// Based on work done by:
+//   Dennis Hayes ([email protected])
+//   Aleksey Ryabchuk ([email protected])
+
+using System.IO;
+using System.Drawing;
+using System.Collections;
+using System.Drawing.Imaging;
+using System.Runtime.Serialization;
+using System.Runtime.InteropServices;
+using System;
+
+
+namespace ShiftUI {
+	[Serializable]
+	public sealed class ImageListStreamer : ISerializable {
+		readonly ImageList.ImageCollection imageCollection;
+		Image [] images;
+		Size image_size;
+		Color back_color;
+
+		internal ImageListStreamer (ImageList.ImageCollection imageCollection)
+		{
+			this.imageCollection = imageCollection;
+		}
+
+		private ImageListStreamer (SerializationInfo info, StreamingContext context)
+		{
+			byte [] data = (byte []) info.GetValue ("Data", typeof (byte []));
+			if (data == null || data.Length <= 4) { // 4 is the signature
+				return;
+			}
+
+			// check the signature ( 'MSFt' )
+			if (data [0] != 77 || data [1] != 83 || data [2] != 70 || data [3] != 116) {
+				return;
+			}
+
+			MemoryStream decoded = GetDecodedStream (data, 4, data.Length - 4);
+			decoded.Position = 4; // jumps over 'magic' and 'version', which are 16-bits each
+
+			BinaryReader reader = new BinaryReader (decoded);
+			ushort nimages = reader.ReadUInt16 ();
+			reader.ReadUInt16 ();	// cMaxImage
+			ushort grow = reader.ReadUInt16 (); // cGrow
+			ushort cx = reader.ReadUInt16 ();
+			ushort cy = reader.ReadUInt16 ();
+			uint bkcolor = reader.ReadUInt32 ();
+			back_color = Color.FromArgb ((int) bkcolor);
+			reader.ReadUInt16 ();	// flags
+
+			short [] ovls = new short [4];
+			for (int i = 0; i < 4; i++) {
+				ovls[i] = reader.ReadInt16 ();
+			}
+
+			byte [] decoded_buffer = decoded.GetBuffer ();
+			int bmp_offset = 28;
+			// FileSize field from the bitmap file header
+			int filesize = decoded_buffer [bmp_offset + 2] + (decoded_buffer [bmp_offset + 3] << 8) +
+					(decoded_buffer [bmp_offset + 4] << 16) + (decoded_buffer [bmp_offset + 5] << 24);
+			// ImageSize field from the info header (can be 0)
+			int imagesize = decoded_buffer [bmp_offset + 34] + (decoded_buffer [bmp_offset + 35] << 8) +
+					(decoded_buffer [bmp_offset + 36] << 16) + (decoded_buffer [bmp_offset + 37] << 24);
+
+			int bmp_length = imagesize + filesize;
+			MemoryStream bmpms = new MemoryStream (decoded_buffer, bmp_offset, bmp_length);
+			Bitmap bmp = null;
+			Bitmap mask = null;
+			bmp = new Bitmap (bmpms);
+			MemoryStream mask_stream = new MemoryStream (decoded_buffer,
+							bmp_offset + bmp_length,
+							(int) (decoded.Length - bmp_offset - bmp_length));
+
+			if (mask_stream.Length > 0)
+				mask = new Bitmap (mask_stream);
+
+			if (bkcolor == 0xFFFFFFFF)
+				back_color = bmp.GetPixel (0, 0);
+
+			if (mask != null) {
+				int width = bmp.Width;
+				int height = bmp.Height;
+				Bitmap newbmp = new Bitmap (bmp);
+				for (int y = 0; y < height; y++) {
+					for (int x = 0; x < width; x++) {
+						Color mcolor = mask.GetPixel (x, y);
+						if (mcolor.B != 0) {
+							newbmp.SetPixel (x, y, Color.Transparent);
+						}
+					}
+				}
+				bmp.Dispose ();
+				bmp = newbmp;
+				mask.Dispose ();
+				mask = null;
+			}
+			images = new Image [nimages];
+			image_size = new Size (cx, cy);
+			Rectangle dest_rect = new Rectangle (0, 0, cx, cy);
+			if (grow * bmp.Width > cx) // Some images store a wrong 'grow' factor
+				grow = (ushort) (bmp.Width / cx);
+
+			for (int r = 0 ; r < nimages ; r++) {
+				int col = r % grow;
+				int row = r / grow;
+				Rectangle area = new Rectangle (col * cx, row * cy, cx, cy);
+				Bitmap b = new Bitmap (cx, cy);
+				using (Graphics g = Graphics.FromImage (b)) {
+					g.DrawImage (bmp, dest_rect, area, GraphicsUnit.Pixel);
+				}
+
+				images [r] = b;
+			}
+			bmp.Dispose ();
+		}
+
+		/*
+		static void WriteToFile (MemoryStream st)
+		{
+			st.Position = 0;
+			FileStream fs = File.OpenWrite (Path.GetTempFileName ());
+			Console.WriteLine ("Writing to {0}", fs.Name);
+			st.WriteTo (fs);
+			fs.Close ();
+		}
+		*/
+
+		static byte [] header = new byte []{ 77, 83, 70, 116, 73, 76, 1, 1 };
+		public void GetObjectData (SerializationInfo si, StreamingContext context)
+		{
+			MemoryStream stream = new MemoryStream ();
+			BinaryWriter writer = new BinaryWriter (stream);
+			writer.Write (header);
+
+			Image [] images = (imageCollection != null) ? imageCollection.ToArray () : this.images;
+			int cols = 4;
+			int rows = images.Length / cols;
+			if (images.Length % cols > 0)
+				++rows;
+
+			writer.Write ((ushort) images.Length);
+			writer.Write ((ushort) images.Length);
+			writer.Write ((ushort) 0x4);
+			writer.Write ((ushort) (images [0].Width));
+			writer.Write ((ushort) (images [0].Height));
+			writer.Write (0xFFFFFFFF); //BackColor.ToArgb ()); //FIXME: should set the right one here.
+			writer.Write ((ushort) 0x21);
+			for (int i = 0; i < 4; i++)
+				writer.Write ((short) -1);
+
+			Bitmap main = new Bitmap (cols * ImageSize.Width, rows * ImageSize.Height);
+			using (Graphics g = Graphics.FromImage (main)) {
+				g.FillRectangle (ThemeEngine.Current.ResPool.GetSolidBrush (BackColor), 0, 0,
+						main.Width, main.Height);
+				for (int i = 0; i < images.Length; i++) {
+					g.DrawImage (images [i], (i % cols) * ImageSize.Width,
+							(i / cols) * ImageSize.Height);
+				}
+			}
+
+			MemoryStream tmp = new MemoryStream ();
+			main.Save (tmp, ImageFormat.Bmp);
+			tmp.WriteTo (stream);
+
+			Bitmap mask = Get1bppMask (main);
+			main.Dispose ();
+			main = null;
+
+			tmp = new MemoryStream ();
+			mask.Save (tmp, ImageFormat.Bmp);
+			tmp.WriteTo (stream);
+			mask.Dispose ();
+
+			stream = GetRLEStream (stream, 4);
+			si.AddValue ("Data", stream.ToArray (), typeof (byte []));
+		}
+
+		unsafe Bitmap Get1bppMask (Bitmap main)
+		{
+			Rectangle rect = new Rectangle (0, 0, main.Width, main.Height);
+			Bitmap result = new Bitmap (main.Width, main.Height, PixelFormat.Format1bppIndexed);
+			BitmapData dresult = result.LockBits (rect, ImageLockMode.ReadWrite, PixelFormat.Format1bppIndexed);
+
+			int w = images [0].Width;
+			int h = images [0].Height;
+			byte *scan = (byte *) dresult.Scan0.ToPointer ();
+			int stride = dresult.Stride;
+			Bitmap current = null;
+			for (int idx = 0; idx < images.Length; idx++) {
+				current = (Bitmap) images [idx];
+				// Hack for newly added images.
+				// Probably has to be done somewhere else.
+				Color c1 = current.GetPixel (0, 0);
+				if (c1.A != 0 && c1 == back_color)
+					current.MakeTransparent (back_color);
+				//
+			}
+
+			int yidx = 0;
+			int imgidx = 0;
+			int localy = 0;
+			int localx = 0;
+			int factor_y = 0;
+			int factor_x = 0;
+			for (int y = 0; y < main.Height; y++) {
+				if (localy == h) {
+					localy = 0;
+					factor_y += 4;
+				}
+				factor_x = 0;
+				localx = 0;
+				for (int x = 0; x < main.Width; x++) {
+					if (localx == w) {
+						localx = 0;
+						factor_x++;
+					}
+					imgidx = factor_y + factor_x;
+					if (imgidx >= images.Length)
+						break;
+					current = (Bitmap) images [imgidx];
+					Color color = current.GetPixel (localx, localy);
+					if (color.A == 0) {
+						int ptridx = yidx + (x >> 3);
+						scan [ptridx] |= (byte) (0x80 >> (x & 7));
+					}
+					localx++;
+				}
+				if (imgidx >= images.Length)
+					break;
+				yidx += stride;
+				localy++;
+			}
+			result.UnlockBits (dresult);
+
+			return result;
+		}
+
+		static MemoryStream GetDecodedStream (byte [] bytes, int offset, int size)
+		{
+			byte [] buffer = new byte [512];
+			int position = 0;
+			int count, data;
+			MemoryStream result = new MemoryStream ();
+			while (size > 0) {
+				count = (int) bytes [offset++];
+				data = (int) bytes [offset++];
+				if ((512 - count) < position) {
+					result.Write (buffer, 0, position);
+					position = 0;
+				}
+
+				for (int i = 0; i < count; i++)
+					buffer [position++] = (byte) data;
+				size -= 2;
+			}
+
+			if (position > 0)
+				result.Write (buffer, 0, position);
+
+			result.Position = 0;
+			return result;
+		}
+
+		//TODO: OptimizeMe
+		static MemoryStream GetRLEStream (MemoryStream input, int start)
+		{
+			MemoryStream result = new MemoryStream ();
+			byte [] ibuffer = input.GetBuffer ();
+			result.Write (ibuffer, 0, start);
+			input.Position = start;
+
+			int prev = -1;
+			int count = 0;
+			int current;
+			while ((current = input.ReadByte ()) != -1) {
+				if (prev != current || count == 255) {
+					if (prev != -1) {
+						result.WriteByte ((byte) count);
+						result.WriteByte ((byte) prev);
+					}
+					prev = current;
+					count = 0;
+				}
+				count++;
+			}
+
+			if (count > 0) {
+				result.WriteByte ((byte) count);
+				result.WriteByte ((byte) current);
+			}
+
+			return result;
+		}
+
+		internal Image [] Images {
+			get { return images; }
+		}
+
+		internal Size ImageSize {
+			get { return image_size; }
+		}
+
+		internal ColorDepth ColorDepth {
+			get { return ColorDepth.Depth32Bit; }
+		}
+
+		internal Color BackColor {
+			get { return back_color; }
+		}
+	}
+}
+