Initial check-in of module SubtitleEdit

Author: niksedk

MacLibSe/Bitmap.cs

@@ -0,0 +1,138 @@
+using System;
+using System.IO;
+using System.Drawing;
+using AppKit;
+using CoreGraphics;
+using System.Runtime.InteropServices;
+using System.Drawing.Imaging;
+
+namespace System.Drawing 
+{
+    public class Bitmap : IDisposable
+    {
+        public int Width { get; private set; }
+
+        public int Height { get; private set; }
+
+        public PixelFormat PixelFormat
+        {
+            get
+            { 
+                return PixelFormat.Format32bppArgb;
+            }
+        }
+
+        private Color[] _colors;
+
+        public Bitmap(int width, int height)
+        {
+            Width = width;
+            Height = height;
+            _colors = new Color[Width * Height];
+        }
+
+        public Color GetPixel(int x, int y)
+        {
+            return _colors[Width * y + x];
+        }
+
+        public void SetPixel(int x, int y, Color c)
+        {
+            _colors[Width * y + x] = c;
+        }
+
+        public NSImage ToNSImage()
+        {
+            return new NSImage(ToCGImage(), new CGSize(Width, Height));
+        }
+
+        public Bitmap(NSImage sourceImage)
+        {
+            Width = (int)sourceImage.CGImage.Width;
+            Height = (int)sourceImage.CGImage.Height;
+            _colors = new Color[Width * Height];
+
+            var rawData = new byte[Width * Height * 4];
+            var bytesPerPixel = 4;
+            var bytesPerRow = bytesPerPixel * Width;
+            var bitsPerComponent = 8;
+
+            using (var colorSpace = CGColorSpace.CreateDeviceRGB())
+            {
+                using (var context = new CGBitmapContext(rawData, Width, Height, bitsPerComponent, bytesPerRow, colorSpace, CGBitmapFlags.ByteOrder32Big | CGBitmapFlags.PremultipliedLast))
+                {
+                    context.DrawImage(new CGRect(0, 0, Width, Height), sourceImage.CGImage);
+
+                    for (int y = 0; y < Height; y++)
+                    {
+                        for (int x = 0; x < Width; x++)
+                        {
+                            var i = bytesPerRow * y + bytesPerPixel * x;   
+                            byte red = rawData[i + 0];
+                            byte green = rawData[i + 1];
+                            byte blue = rawData[i + 2];
+                            byte alpha = rawData[i + 3];
+                            SetPixel(x, y, Color.FromArgb(alpha, red, green, blue));
+                        }
+                    }
+                }
+            }
+        }
+
+        public CGImage ToCGImage()
+        {
+            var rawData = new byte[Width * Height * 4];
+            var bytesPerPixel = 4;
+            var bytesPerRow = bytesPerPixel * Width;
+            var bitsPerComponent = 8;
+            using (var colorSpace = CGColorSpace.CreateDeviceRGB())
+            {
+                using (var context = new CGBitmapContext(rawData, Width, Height, bitsPerComponent, bytesPerRow, colorSpace, CGBitmapFlags.ByteOrder32Big | CGBitmapFlags.PremultipliedLast))
+                {
+                    for (int y = 0; y < Height; y++)
+                    {
+                        for (int x = 0; x < Width; x++)
+                        {
+                            Color c = GetPixel(x, y);
+                            var i = bytesPerRow * y + bytesPerPixel * x;
+                            rawData[i + 0] = c.R;
+                            rawData[i + 1] = c.G;
+                            rawData[i + 2] = c.B;
+                            rawData[i + 3] = c.A;
+                        }
+                    }
+//                    //context.Flush();
+//
+//                    context.SetFillColor(new CGColor(1,0,0, 1));
+//                    context.FillRect(new CGRect(0,0, 20, 20));
+//
+//                    context.SetTextDrawingMode(CGTextDrawingMode.Clip);
+//                    context.SetFillColor(new CGColor(0,0,0, 1));
+//                    context.ShowTextAtPoint(20, 20, "HEJ");
+//                    context.SetTextDrawingMode(CGTextDrawingMode.Fill);
+//                    context.ShowTextAtPoint(30, 30, "Yo");
+                    return context.ToImage();
+                }
+            }
+        }
+
+        #region IDisposable implementation
+        public void Dispose ()
+        {
+            _colors = null;
+        }
+        #endregion
+
+        public Bitmap Clone (Rectangle rectangle, System.Drawing.Imaging.PixelFormat pixelFormat)
+        {
+            return null; //TODO: Get section...
+        }
+
+        public Bitmap Clone ()
+        {
+            return new Bitmap (ToNSImage ());
+        }
+
+    }
+}
+