public void Import(string fileName)
        {
            Pixbuf bg;

            // Handle any EXIF orientation flags
            using (var fs = new FileStream (fileName, FileMode.Open, FileAccess.Read))
                bg = new Pixbuf (fs);

            bg = bg.ApplyEmbeddedOrientation ();

            Size imagesize = new Size (bg.Width, bg.Height);

            Document doc = PintaCore.Workspace.CreateAndActivateDocument (fileName, imagesize);
            doc.HasFile = true;
            doc.ImageSize = imagesize;
            doc.Workspace.CanvasSize = imagesize;

            Layer layer = doc.AddNewLayer (Path.GetFileName (fileName));

            using (Cairo.Context g = new Cairo.Context (layer.Surface)) {
                CairoHelper.SetSourcePixbuf (g, bg, 0, 0);
                g.Paint ();
            }

            bg.Dispose ();
        }

		public override void Undo ()
		{
			// maintain the current scaling setting after the operation
			double scale = PintaCore.Workspace.Scale;

			Size swap = PintaCore.Workspace.ImageSize;

			PintaCore.Workspace.ImageSize = old_size;
			PintaCore.Workspace.CanvasSize = old_size;
			
			old_size = swap;
			
			base.Undo ();
			
			if (RestoreSelection != null) {
				DocumentSelection old = PintaCore.Workspace.ActiveDocument.Selection;
				PintaCore.Workspace.ActiveDocument.Selection = RestoreSelection.Clone();

				if (old != null) {
					old.Dispose ();
				}

				PintaCore.Layers.ShowSelection = true;
			} else {
				PintaCore.Layers.ResetSelectionPath ();
			}
			
			PintaCore.Workspace.Invalidate ();

			PintaCore.Workspace.Scale = scale;
		}

		public ResizeHistoryItem (Size oldSize) : base ()
		{
			old_size = oldSize;

			Icon = "Menu.Image.Resize.png";
			Text = Catalog.GetString ("Resize Image");
		}

    public Shell()
        : base("Mono Heap Profiler")
    {
        entries = new ActionEntry[] {
            new ActionEntry ("FileMenu", null, "_File", null, null, null),
            new ActionEntry ("OpenAction", Stock.Open, null, "<control>O", "Open a profile...", new EventHandler (OnOpen)),
            new ActionEntry ("QuitAction", Stock.Quit, null, "<control>Q", "Quit the application", delegate { Application.Quit (); }),
        };

        DefaultSize = new Gdk.Size (700, 700);
        DeleteEvent += delegate { Application.Quit (); };

        main_box = new VBox (false, 0);
        Add (main_box);

        shell_commands = new ActionGroup ("TestActions");
        shell_commands.Add (entries);

        uim = new UIManager ();
        uim.AddWidget += delegate (object obj, AddWidgetArgs args) {
            args.Widget.Show ();
            main_box.PackStart (args.Widget, false, true, 0);
        };

        uim.ConnectProxy += OnProxyConnect;
        uim.InsertActionGroup (shell_commands, 0);
        uim.AddUiFromResource ("shell-ui.xml");
        AddAccelGroup (uim.AccelGroup);

        sb = new Statusbar ();
        main_box.PackEnd (sb, false, true, 0);

        pager = new ShellPager (this);
        main_box.PackEnd (pager, true, true, 0);
    }

		/// <summary>
		/// Enmarca una imagen.
		/// </summary>
		/// <param name="image">
		/// La imagen a enmarcar.
		/// </param>
		/// <param name="pos">
		/// La esquina de la zona a recortar.
		/// </param>
		/// <param name="size">
		/// El tamaño de la zona a recortar.
		/// </param>
		protected void GetEdges(FloatBitmap image, out Point pos, out Size size)
		{
			pos = new Point(0,0);
			size = new Size(image.Width, image.Height);
			
			bool found =false;
			
			for(int i = 0; i < image.Width && !found; i++)
			{
				for(int j = 0; j < image.Height && !found; j++)
				{
					if (image[i, j] != FloatBitmap.White)
					{
						pos.X = i-1;
						found = true;
					}
				}
			}
			
			found =false;
			for(int i = image.Width-1; i >=0 && !found; i--)
			{
				for(int j = 0; j < image.Height && !found; j++)
				{
					if (image[i, j] != FloatBitmap.White)
					{
						size.Width = i - pos.X +2 ;
						found = true;
					}
				}
			}
			
			found =false;
			for(int j = 0; j < image.Height && !found; j++)
			{
				for(int i = 0; i < image.Width&& !found; i++)
				{
					if (image[i, j] != FloatBitmap.White)
					{
						pos.Y = j-1;
						found = true;
					}
				}
			}
			
			found =false;
			for(int j = image.Height-1; j >=0 && !found; j--)
			{
				for(int i = 0; i < image.Width && !found; i++)
				{
					if (image[i, j] != FloatBitmap.White)
					{
						size.Height = j - pos.Y +2;
						found = true;
					}
				}
			}
		}

        public override void ApplyTransform (Matrix xform, Size new_size)
		{
			base.ApplyTransform (xform, new_size);

			foreach (ReEditableLayer rel in ReEditableLayers)
			{
				if (rel.IsLayerSetup)
                    rel.Layer.ApplyTransform (xform, new_size);
			}
		}

        public void Initialize(Size sourceSize, Size destinationSize)
        {
            if (sourceSize == source_size && destinationSize == destination_size)
                return;

            source_size = sourceSize;
            destination_size = destinationSize;

            scale_factor = new ScaleFactor (source_size.Width, destination_size.Width);
            generated = false;
        }

 private void Init()
 {
     Events = EventMask.PointerMotionMask |
       EventMask.ButtonPressMask |
       EventMask.ButtonReleaseMask;
     _imContext = new Gtk.IMMulticontext();
     _imContext.Commit += ImContext_Commit;
     DoubleBuffered = false;
     Realize();
     _lastClientSize = ClientSize;
 }

 public ImageWidget(Pixbuf pixbuf)
 {
     resizingX = resizingY = false;
     this.CanFocus = true;
     this.Events = EventMask.ButtonPressMask | EventMask.ButtonReleaseMask | EventMask.PointerMotionMask;
     this.child = new Gtk.Image ();
     this.child.Pixbuf = pixbuf;
     originalPixbuf = pixbuf;
     Add (child);
     imageSize = child.Allocation.Size;
 }

        public void Rotate (double angle, Size new_size)
        {
			double radians = (angle / 180d) * Math.PI;
		    var old_size = PintaCore.Workspace.ImageSize;

            var xform = new Matrix ();
            xform.Translate (new_size.Width / 2.0, new_size.Height / 2.0);
            xform.Rotate (radians);
            xform.Translate (-old_size.Width / 2.0, -old_size.Height / 2.0);

            ApplyTransform (xform, new_size);
        }

		/// <summary>
		/// Provides a default implementation for performing dst = F(lhs, rhs) over some rectangle of interest.
		/// </summary>
		/// <param name="dst">The Surface to write pixels to.</param>
		/// <param name="dstOffset">The pixel offset that defines the upper-left of the rectangle-of-interest for the dst Surface.</param>
		/// <param name="lhs">The Surface to read pixels from for the lhs parameter given to the method <b>ColorBgra Apply(ColorBgra, ColorBgra)</b>.</param>
		/// <param name="lhsOffset">The pixel offset that defines the upper-left of the rectangle-of-interest for the lhs Surface.</param>
		/// <param name="rhs">The Surface to read pixels from for the rhs parameter given to the method <b>ColorBgra Apply(ColorBgra, ColorBgra)</b></param>
		/// <param name="rhsOffset">The pixel offset that defines the upper-left of the rectangle-of-interest for the rhs Surface.</param>
		/// <param name="roiSize">The size of the rectangles-of-interest for all Surfaces.</param>
		public void Apply (Cairo.ImageSurface dst, Point dstOffset,
				  Cairo.ImageSurface lhs, Point lhsOffset,
				  Cairo.ImageSurface rhs, Point rhsOffset,
				  Size roiSize)
		{
			// Bounds checking only enabled in Debug builds.
#if DEBUG
			// Create bounding rectangles for each Surface
			Rectangle dstRect = new Rectangle (dstOffset, roiSize);
			Rectangle lhsRect = new Rectangle (lhsOffset, roiSize);
			Rectangle rhsRect = new Rectangle (rhsOffset, roiSize);

			// Clip those rectangles to those Surface's bounding rectangles
			Rectangle dstClip = Rectangle.Intersect (dstRect, dst.GetBounds ());
			Rectangle lhsClip = Rectangle.Intersect (lhsRect, lhs.GetBounds ());
			Rectangle rhsClip = Rectangle.Intersect (rhsRect, rhs.GetBounds ());

			// If any of those Rectangles actually got clipped, then throw an exception
			if (dstRect != dstClip) {
				throw new ArgumentOutOfRangeException ("roiSize", "Destination roi out of bounds");
			}

			if (lhsRect != lhsClip) {
				throw new ArgumentOutOfRangeException ("roiSize", "lhs roi out of bounds");
			}

			if (rhsRect != rhsClip) {
				throw new ArgumentOutOfRangeException ("roiSize", "rhs roi out of bounds");
			}
#endif

			// Cache the width and height properties
			int width = roiSize.Width;
			int height = roiSize.Height;

			// Do the work.
			unsafe {
				for (int row = 0; row < height; ++row) {
					ColorBgra* dstPtr = dst.GetPointAddress (dstOffset.X, dstOffset.Y + row);
					ColorBgra* lhsPtr = lhs.GetPointAddress (lhsOffset.X, lhsOffset.Y + row);
					ColorBgra* rhsPtr = rhs.GetPointAddress (rhsOffset.X, rhsOffset.Y + row);

					Apply (dstPtr, lhsPtr, rhsPtr, width);
				}
			}
		}

 public Browser(string catalog_dir)
     : base("Documentation Browser Sample")
 {
     DefaultSize = new Size (600, 400);
     Gtk.Paned paned = new Gtk.HPaned ();
     Gtk.ScrolledWindow sw = new ScrolledWindow ();
     DocTree tree = new DocTree (catalog_dir);
     sw.Add (tree);
     paned.Add1 (sw);
     sw = new ScrolledWindow ();
     DocView view = new DocView (tree);
     sw.AddWithViewport (view);
     paned.Add2 (sw);
     paned.Position = 250;
     paned.ShowAll ();
     Add (paned);
 }

        public void Import(LayerManager layers, string fileName)
        {
            Pixbuf bg = new Pixbuf (fileName);
            Size imagesize = new Size (bg.Width, bg.Height);

            PintaCore.Workspace.CreateAndActivateDocument (fileName, imagesize);
            PintaCore.Workspace.ActiveDocument.HasFile = true;
            PintaCore.Workspace.ActiveDocument.ImageSize = imagesize;
            PintaCore.Workspace.ActiveWorkspace.CanvasSize = imagesize;

            Layer layer = layers.AddNewLayer (Path.GetFileName (fileName));

            using (Cairo.Context g = new Cairo.Context (layer.Surface)) {
                CairoHelper.SetSourcePixbuf (g, bg, 0, 0);
                g.Paint ();
            }

            bg.Dispose ();
        }

        public override void Redo()
        {
            // maintain the current scaling setting after the operation
            double scale = PintaCore.Workspace.Scale;

            Size swap = PintaCore.Workspace.ImageSize;

            PintaCore.Workspace.ImageSize = old_size;
            PintaCore.Workspace.CanvasSize = old_size;

            old_size = swap;

            base.Redo ();

            PintaCore.Layers.ResetSelectionPath ();
            PintaCore.Workspace.Invalidate ();

            PintaCore.Workspace.Scale = scale;
        }

        /// <summary>
        /// Initializes a new instance of the <see cref="ConfiguratorDialog"/> class.
        /// </summary>
        /// <param name="treeStore">The tree store.</param>
        /// <param name="dialogTitle">The dialog title.</param>
        /// <param name="parentWindow">The parent window.</param>
        /// <param name="flags">The flags.</param>
        /// <param name="buttonData">The button data.</param>
        public ConfiguratorDialog(
			TreeStore treeStore,
			string dialogTitle = "Configuration",
			Window parentWindow = null,
			DialogFlags flags = DialogFlags.DestroyWithParent,
			params object[] buttonData)
            : base(dialogTitle, parentWindow, flags, buttonData)
        {
            // Save the various parameters as member variables.
            if (treeStore == null)
            {
                throw new ArgumentNullException("treeStore");
            }

            // Set up the widget.
            InitializeWidget(treeStore);

            // Set up the default
            DefaultSize = new Size(400, 250);
        }

        void OnConfigureEvent(object o, Gtk.ConfigureEventArgs args)
        {
            var evnt = args.Event;
            args.RetVal = true;
            var newSize = new Size(evnt.Width, evnt.Height);

            if (newSize != _lastClientSize)
            {
                Resized(newSize);
                _lastClientSize = newSize;
            }

            var newPosition = new Point(evnt.X, evnt.Y);
            
            if (newPosition != _lastPosition)
            {
                PositionChanged(newPosition);
                _lastPosition = newPosition;
            }
        }

		public Window (ComparisonInfo info) : base ("ilContrast Assembly Comparison Tool") 
		{
			DefaultSize = new Size (450, 450);

			main_vbox = new VBox (false, 0);
			AddActionUI ();
#if USE_GECKO
			browser = new Gecko.WebControl ();
			main_vbox.PackStart (browser, true, true, 0);
#else
			web_view = new WebKit.WebView ();
			ScrolledWindow sw = new ScrolledWindow ();
			sw.Add (web_view);
			main_vbox.PackStart (sw, true, true, 0);
#endif
			statusbar = new Statusbar ();
			main_vbox.PackStart (statusbar, false, false, 0);
			Add (main_vbox);
			main_vbox.ShowAll ();
			first_show = true;
			this.info = info;
		}

 public void DrawDrawable( Gdk.GC gc, Drawable src, Point src_location, Point dest_location, Size sz )
 {
     this.DrawDrawable( gc, src, src_location.X, src_location.Y, dest_location.X, dest_location.Y, sz.Width, sz.Height );
 }

        private void SetRequisition(Size size)
        {
            Requisition req = new Requisition ();
            req.Width = size.Width;
            req.Height = size.Height;
            Requisition = req;

            QueueResize ();
        }

 public WindowImpl()
     : base(Gtk.WindowType.Toplevel)
 {
     DefaultSize = new Gdk.Size(900, 480);
     Init();
 }