C# Gdk.Pixbuf.Fill方法代码示例

 public Gdk.Pixbuf GetIcon(Gdk.Color gcolor)
 {
     uint color = (((uint)gcolor.Red >> 8) << 24) | (((uint)gcolor.Green >> 8) << 16) | (((uint)gcolor.Blue >> 8) << 8) | 0xff;
     Gdk.Pixbuf icon = new Gdk.Pixbuf (Gdk.Colorspace.Rgb, true, 8, 16, 16);
     icon.Fill (color);
     return icon;
 }

 public static Gdk.Pixbuf DesaturateIcon(Gdk.Pixbuf source)
 {
     Gdk.Pixbuf dest = new Gdk.Pixbuf (source.Colorspace, source.HasAlpha, source.BitsPerSample, source.Width, source.Height);
     dest.Fill (0);
     source.SaturateAndPixelate (dest, 0, false);
     return dest;
 }

 public override object Crop(object handle, int srcX, int srcY, int width, int height)
 {
     var pix = (Gdk.Pixbuf)handle;
     Gdk.Pixbuf res = new Gdk.Pixbuf (pix.Colorspace, pix.HasAlpha, pix.BitsPerSample, width, height);
     res.Fill (0);
     pix.CopyArea (srcX, srcY, width, height, res, 0, 0);
     return res;
 }

 public static Gdk.Pixbuf AddIconOverlay(Gdk.Pixbuf target, Gdk.Pixbuf overlay)
 {
     Gdk.Pixbuf res = new Gdk.Pixbuf (target.Colorspace, target.HasAlpha, target.BitsPerSample, target.Width, target.Height);
     res.Fill (0);
     target.CopyArea (0, 0, target.Width, target.Height, res, 0, 0);
     overlay.Composite (res, 0, 0, overlay.Width, overlay.Height, 0, 0, 1, 1, Gdk.InterpType.Bilinear, 255);
     return res;
 }

		void AddOverlay (ref Gdk.Pixbuf icon, Gdk.Pixbuf overlay)
		{
			Gdk.Pixbuf cached = Context.GetComposedIcon (icon, overlay);
			if (cached != null) {
				icon = cached;
				return;
			}
			
			int dx = 2;
			int dy = 2;
			
			Gdk.Pixbuf res = new Gdk.Pixbuf (icon.Colorspace, icon.HasAlpha, icon.BitsPerSample, icon.Width + dx, icon.Height + dy);
			res.Fill (0);
			icon.CopyArea (0, 0, icon.Width, icon.Height, res, 0, 0);
			
			overlay.Composite (res,
				res.Width - overlay.Width,  res.Height - overlay.Height,
				overlay.Width, overlay.Height,
				res.Width - overlay.Width,  res.Height - overlay.Height,
				1, 1, Gdk.InterpType.Bilinear, 255); 
			
			Context.CacheComposedIcon (icon, overlay, res);
			icon = res;
		}

		static Gdk.Pixbuf CreateColorBlock (string name, Gtk.IconSize size)
		{
			int w, h;
			if (!Gtk.Icon.SizeLookup (Gtk.IconSize.Menu, out w, out h))
				w = h = 22;
			Gdk.Pixbuf p = new Gdk.Pixbuf (Gdk.Colorspace.Rgb, true, 8, w, h);
			uint color;
			if (!TryParseColourFromHex (name, false, out color))
				//if lookup fails, make it transparent
				color = 0xffffff00u;
			p.Fill (color);
			return p;
		}

		public override object CropBitmap (object handle, int srcX, int srcY, int width, int height)
		{
			var pix = ((GtkImage)handle).Frames[0].Pixbuf;
			Gdk.Pixbuf res = new Gdk.Pixbuf (pix.Colorspace, pix.HasAlpha, pix.BitsPerSample, width, height);
			res.Fill (0);
			pix.CopyArea (srcX, srcY, width, height, res, 0, 0);
			return new GtkImage (res);
		}

		//caller should check null and that sizes match
		static Gdk.Pixbuf MergeIcons (Gdk.Pixbuf icon1, Gdk.Pixbuf icon2)
		{
			Gdk.Pixbuf res = new Gdk.Pixbuf (icon1.Colorspace, icon1.HasAlpha, icon1.BitsPerSample, icon1.Width, icon1.Height);
			res.Fill (0);
			icon1.CopyArea (0, 0, icon1.Width, icon1.Height, res, 0, 0);
			icon2.Composite (res, 0, 0, icon2.Width, icon2.Height, 0, 0, 1, 1, Gdk.InterpType.Bilinear, 255);
			return res;
		}

 private void InitializeWidgets()
 {
     this.Spacing = 10;
        this.BorderWidth = 10;
        UserTreeView = new iFolderTreeView();
        ScrolledWindow sw = new ScrolledWindow();
        sw.ShadowType = Gtk.ShadowType.EtchedIn;
        sw.Add(UserTreeView);
        this.PackStart(sw, true, true, 0);
        UserTreeStore = new ListStore(typeof(iFolderUser));
        UserTreeView.Model = UserTreeStore;
        CellRendererPixbuf mcrp = new CellRendererPixbuf();
        TreeViewColumn UserColumn = new TreeViewColumn();
        UserColumn.PackStart(mcrp, false);
        UserColumn.Spacing = 2;
        UserColumn.SetCellDataFunc(mcrp,
      new TreeCellDataFunc(UserCellPixbufDataFunc));
        CellRendererText mcrt = new CellRendererText();
        UserColumn.PackStart(mcrt, false);
        UserColumn.SetCellDataFunc(mcrt,
      new TreeCellDataFunc(UserCellTextDataFunc));
        UserColumn.Title = Util.GS("User");
        UserTreeView.AppendColumn(UserColumn);
        UserColumn.Resizable = true;
        CellRendererText statecr = new CellRendererText();
        statecr.Xpad = 5;
        TreeViewColumn stateColumn =
        UserTreeView.AppendColumn(Util.GS("Role"),
      statecr,
      new TreeCellDataFunc(StateCellTextDataFunc));
        stateColumn.Resizable = true;
        stateColumn.MinWidth = 150;
        CellRendererText accesscr = new CellRendererText();
        accesscr.Xpad = 5;
        TreeViewColumn accessColumn =
        UserTreeView.AppendColumn(Util.GS("Rights"),
      accesscr,
      new TreeCellDataFunc(AccessCellTextDataFunc));
        accessColumn.Resizable = true;
        UserTreeView.Selection.Mode = SelectionMode.Multiple;
        UserTreeView.Selection.Changed +=
     new EventHandler(OnUserSelectionChanged);
        UserTreeView.ButtonPressEvent += new ButtonPressEventHandler(
       OnUserTreeViewButtonPressed);
        UserTreeView.RowActivated += new RowActivatedHandler(
       OnUserTreeViewRowActivated);
        OwnerUserPixbuf =
     new Gdk.Pixbuf(Util.ImagesPath("ifolder-user-owner16.png"));
        CurrentUserPixbuf =
     new Gdk.Pixbuf(Util.ImagesPath("ifolder-user-current16.png"));
        NormalUserPixbuf =
     new Gdk.Pixbuf(OwnerUserPixbuf.Colorspace, true,
     OwnerUserPixbuf.BitsPerSample,
     OwnerUserPixbuf.Width,
     OwnerUserPixbuf.Height);
        NormalUserPixbuf.Fill(0x00000000);
        HBox buttonBox = new HBox();
        buttonBox.Spacing = 10;
        this.PackStart(buttonBox, false, false, 0);
        HBox leftBox = new HBox();
        leftBox.Spacing = 10;
        buttonBox.PackStart(leftBox, false, false, 0);
        HBox midBox = new HBox();
        midBox.Spacing = 10;
        buttonBox.PackStart(midBox, true, true, 0);
        HBox rightBox = new HBox();
        rightBox.Spacing = 10;
        buttonBox.PackStart(rightBox, false, false, 0);
        AddButton = new Button(Gtk.Stock.Add);
        rightBox.PackStart(AddButton);
        AddButton.Clicked += new EventHandler(OnAddUser);
        RemoveButton = new Button(Gtk.Stock.Remove);
        rightBox.PackStart(RemoveButton);
        RemoveButton.Clicked += new EventHandler(OnRemoveUser);
        AccessButton = new Button(Util.GS("R_ights..."));
        leftBox.PackStart(AccessButton);
        AccessButton.Clicked += new EventHandler(OnAccessClicked);
 }

        private bool DelayedUpdateHistogram()
        {
            if (Photos.Length == 0)
                return false;

            IPhoto photo = Photos[0];

            Gdk.Pixbuf hint = histogram_hint;
            histogram_hint = null;
            int max = histogram_expander.Allocation.Width;

            try {
                if (hint == null)
                    using (var img = ImageFile.Create (photo.DefaultVersion.Uri)) {
                        hint = img.Load (256, 256);
                    }

                histogram_image.Pixbuf = histogram.Generate (hint, max);

                hint.Dispose ();
            } catch (System.Exception e) {
                Hyena.Log.Debug (e.StackTrace);
                using (Gdk.Pixbuf empty = new Gdk.Pixbuf (Gdk.Colorspace.Rgb, true, 8, 256, 256)) {
                    empty.Fill (0x0);
                    histogram_image.Pixbuf = histogram.Generate (empty, max);
                }
            }

            return false;
        }

		public static Gdk.Pixbuf GetIcon (this Counter c)
		{
			Gdk.Pixbuf cachedIcon;
			if (icons.TryGetValue (c, out cachedIcon))
				return cachedIcon;
			
			Gdk.Color gcolor = c.GetColor ();
			uint color = (((uint)gcolor.Red >> 8) << 24) | (((uint)gcolor.Green >> 8) << 16) | (((uint)gcolor.Blue >> 8) << 8) | 0xff;
			cachedIcon = new Gdk.Pixbuf (Gdk.Colorspace.Rgb, true, 8, 16, 16);
			cachedIcon.Fill (color);
			icons [c] = cachedIcon;
			return cachedIcon;
		}

			public SlideShow (string name)
			{
				Tag tag;
				
				if (name != null)
					tag = Database.Tags.GetTagByName (name);
				else {
					int id = (int) Preferences.Get (Preferences.SCREENSAVER_TAG);
					tag = Database.Tags.GetTagById (id);
				}
				
				Photo [] photos;
				if (tag != null)
					photos = Database.Photos.Query (new Tag [] { tag } );
 				else if ((int) Preferences.Get (Preferences.SCREENSAVER_TAG) == 0)
 					photos = db.Photos.Query (new Tag [] {});
				else
					photos = new Photo [0];

				window = new XScreenSaverSlide ();
				SetStyle (window);
				if (photos.Length > 0) {
					Array.Sort (photos, new Photo.RandomSort ());
					
					Gdk.Pixbuf black = new Gdk.Pixbuf (Gdk.Colorspace.Rgb, false, 8, 1, 1);
					black.Fill (0x00000000);
					slideview = new SlideView (black, photos);
					window.Add (slideview);
				} else {
					Gtk.HBox outer = new Gtk.HBox ();
					Gtk.HBox hbox = new Gtk.HBox ();
					Gtk.VBox vbox = new Gtk.VBox ();

					outer.PackStart (new Gtk.Label (String.Empty));
					outer.PackStart (vbox, false, false, 0);
					vbox.PackStart (new Gtk.Label (String.Empty));
					vbox.PackStart (hbox, false, false, 0);
					hbox.PackStart (new Gtk.Image (Gtk.Stock.DialogWarning, Gtk.IconSize.Dialog),
							false, false, 0);
					outer.PackStart (new Gtk.Label (String.Empty));

					string msg;
					string long_msg;

					if (tag != null) {
						msg = String.Format (Catalog.GetString ("No photos matching {0} found"), tag.Name);
						long_msg = String.Format (Catalog.GetString ("The tag \"{0}\" is not applied to any photos. Try adding\n" +
											     "the tag to some photos or selecting a different tag in the\n" +
											     "F-Spot preference dialog."), tag.Name);
					} else {
						msg = Catalog.GetString ("Search returned no results");
						long_msg = Catalog.GetString ("The tag F-Spot is looking for does not exist. Try\n" + 
									      "selecting a different tag in the F-Spot preference\n" + 
									      "dialog.");
					}

					Gtk.Label label = new Gtk.Label (msg);
					hbox.PackStart (label, false, false, 0);

					Gtk.Label long_label = new Gtk.Label (long_msg);
					long_label.Markup  = String.Format ("<small>{0}</small>", long_msg);

					vbox.PackStart (long_label, false, false, 0);
					vbox.PackStart (new Gtk.Label (String.Empty));

					window.Add (outer);
					SetStyle (label);
					SetStyle (long_label);
					//SetStyle (image);
				}
				window.ShowAll ();
			}

 public static Gdk.Pixbuf CreateEmblemedPixbuf(Gdk.Pixbuf icon, Gdk.Pixbuf emblem)
 {
     if (icon == null || emblem == null) return null;
        if (icon.Width <= emblem.Width || icon.Height <= emblem.Height) return null;
        Gdk.Pixbuf dest = new Gdk.Pixbuf(icon.Colorspace, true, icon.BitsPerSample, icon.Width, icon.Height);
        dest.Fill(0x00000000);
        try
        {
     icon.Composite(dest,
     0,
     0,
     dest.Width,
     dest.Height,
     0,
     0,
     1.0,
     1.0,
     Gdk.InterpType.Bilinear,
     255);
     emblem.Composite(dest,
     icon.Width - emblem.Width - 1,
     icon.Height - emblem.Height - 1,
     emblem.Width,
     emblem.Height,
     icon.Width - emblem.Width - 1,
     icon.Height - emblem.Height - 1,
     1.0,
     1.0,
     Gdk.InterpType.Bilinear,
     255);
        }
        catch(Exception e)
        {
     dest = null;
        }
        return dest;
 }

		//caller should check that sizes match
		public static Gdk.Pixbuf MergeIcons (Gdk.Pixbuf icon1, Gdk.Pixbuf icon2)
		{
			if (icon2 == null)
				return icon1;
			if (icon1 == null)
				return icon2;

			Gdk.Pixbuf res = new Gdk.Pixbuf (icon1.Colorspace, icon1.HasAlpha, icon1.BitsPerSample, icon1.Width, icon1.Height);
			res.Fill (0);
			icon1.CopyArea (0, 0, icon1.Width, icon1.Height, res, 0, 0);
			icon2.Composite (res, 0, 0, icon2.Width, icon2.Height, 0, 0, 1, 1, Gdk.InterpType.Bilinear, 255);

			var icon1_2x = Get2xIconVariant (icon1);
			var icon2_2x = Get2xIconVariant (icon2);

			if (icon1_2x != null || icon2_2x != null) {
				if (icon1_2x == null)
					icon1_2x = ScaleIcon (icon1, icon1.Width * 2, icon1.Height * 2);
				if (icon2_2x == null)
					icon2_2x = ScaleIcon (icon2, icon2.Width * 2, icon2.Height * 2);
				var res2x = MergeIcons (icon1_2x, icon2_2x);
				Set2xIconVariant (res, res2x);
			}

			return res;
		}

		/// <summary>
		/// Handles the start of processing of a new node.
		/// </summary>
		/// <param name="sender">
		/// A <see cref="System.Object"/>
		/// </param>
		/// <param name="args">
		/// A <see cref="EventArgs"/>
		/// </param>
		private void OnControllerTokenChecked(object sender, 
		                                            TokenCheckedArgs args)
		{
			Application.Invoke(sender, args,
			                   delegate(object resender, EventArgs _args)
			{
				TokenCheckedArgs a = _args as TokenCheckedArgs;
			
				if(!sequencingFinished)
				{
					currentToken = a.CurrentToken;
					
				
					FloatBitmap sequenceImage;
					
					if(a.LastSequence!= null)
					{
						TokenSequence joinSeq = 
							new TokenSequence(a.LastSequence);
						lastToken = joinSeq.Last;	
						joinSeq.Append(currentToken);
						Token joinedToken =Token.Join(joinSeq, "");
						
						sequenceImage = joinedToken.Image;
						
					}
					else
					{
						sequenceImage = currentToken.Image;					
						lastToken = null;
					}
					
					// We add a border to the orginal image.
					
					Gdk.Pixbuf sequencePixbuf = sequenceImage.CreatePixbuf();
					
					Gdk.Pixbuf drawnImage = 
						new Gdk.Pixbuf(sequencePixbuf.Colorspace,false, 8, 
						               sequencePixbuf.Width+10, 
						               sequencePixbuf.Height+10);
					
					drawnImage.Fill(0xFFFFFFFF);
					
					sequencePixbuf.CopyArea(0, 0, 
				                        sequencePixbuf.Width, 
				                        sequencePixbuf.Height,
				                        drawnImage,
				                        5,5);
					
					if(lastToken!=null)
					{
						uint color;
						if(currentToken.CloseFollows(lastToken))
						{
							color = 0x00FF00;
							sequencingStepResultLbl.Markup = 
								String.Format("<b>Sí, el símbolo «{0}» se añadirá a la secuencia actual</b>",
								              currentToken.Text);
							
						}
						else
						{
							color = 0xFF0000;
							sequencingStepResultLbl.Markup = 
								String.Format("<b>No, «{0}» no puede ser considerado parte de la secuencia ({1})</b>",
								              currentToken.Text,
								              a.LastSequence.ToString());
						}
						
						
						Gdk.Pixbuf markedImage = drawnImage.Copy();
						
						// We paint the image of the color
						markedImage = 
							markedImage.CompositeColorSimple(markedImage.Width, 
							                                 markedImage.Height,
							                                 Gdk.InterpType.Nearest,
							                                 100, 1, color, color);
						
						// We are going to mark the image of the to symbols being considered
						// with their baselines.
						int min = int.MaxValue;
						foreach (Token t in a.LastSequence ) 
						{
							if(t.Top < min)
								min =t.Top;
						}
						
						int offset = Math.Min(min, currentToken.Top);
						int lastBaseline = lastToken.Baseline - offset;
						int currentBaseline = currentToken.Baseline - offset;
//.........这里部分代码省略.........