C# ComboBox.SizeRequest方法代码示例

		public void Initialize (EditSession session)
		{
			this.session = session;
			
			//if standard values are supported by the converter, then 
			//we list them in a combo
			if (session.Property.Converter.GetStandardValuesSupported (session))
			{
				store = new ListStore (typeof(string), typeof(object));

				//if converter doesn't allow nonstandard values, or can't convert from strings, don't have an entry
				if (session.Property.Converter.GetStandardValuesExclusive (session) || !session.Property.Converter.CanConvertFrom (session, typeof(string))) {
					combo = new ComboBox (store);
					var crt = new CellRendererText ();
					combo.PackStart (crt, true);
					combo.AddAttribute (crt, "text", 0);
				} else {
					combo = new ComboBoxEntry (store, 0);
					entry = ((ComboBoxEntry)combo).Entry;
					entry.HeightRequest = combo.SizeRequest ().Height;
				}

				PackStart (combo, true, true, 0);
				combo.Changed += TextChanged;
				
				//fill the list
				foreach (object stdValue in session.Property.Converter.GetStandardValues (session)) {
					store.AppendValues (session.Property.Converter.ConvertToString (session, stdValue), ObjectBox.Box (stdValue));
				}
				
				//a value of "--" gets rendered as a --, if typeconverter marked with UsesDashesForSeparator
				object[] atts = session.Property.Converter.GetType ()
					.GetCustomAttributes (typeof (StandardValuesSeparatorAttribute), true);
				if (atts.Length > 0) {
					string separator = ((StandardValuesSeparatorAttribute)atts[0]).Separator;
					combo.RowSeparatorFunc = (model, iter) => separator == ((string)model.GetValue (iter, 0));
				}
			}
			// no standard values, so just use an entry
			else {
				entry = new Entry ();
				PackStart (entry, true, true, 0);
			}

			//if we have an entry, fix it up a little
			if (entry != null) {
				entry.HasFrame = false;
				entry.Changed += TextChanged;
				entry.FocusOutEvent += FirePendingChangeEvent;
			}

			if (entry != null && ShouldShowDialogButton ()) {
				var button = new Button ("...");
				PackStart (button, false, false, 0);
				button.Clicked += ButtonClicked;
			}
			
			Spacing = 3;
			ShowAll ();
		}

		void ShowIncorretEolMarkers (string fileName, bool multiple)
		{
			RemoveMessageBar ();
			messageOverlayWindow = new OverlayMessageWindow ();

			var hbox = new HBox ();
			hbox.Spacing = 8;

			var image = new HoverCloseButton ();
			hbox.PackStart (image, false, false, 0);
			var label = new Label (string.Format ("This file has line endings ({0}) which differ from the policy settings ({1}).", GetEolString (DetectedEolMarker), GetEolString (textEditor.Options.DefaultEolMarker)));
			var color = (Mono.TextEditor.HslColor)textEditor.ColorStyle.NotificationText.Foreground;
			label.ModifyFg (StateType.Normal, color);

			int w, h;
			label.Layout.GetPixelSize (out w, out h);
			label.Ellipsize = Pango.EllipsizeMode.End;

			hbox.PackStart (label, true, true, 0);
			var okButton = new Button (Gtk.Stock.Ok);
			okButton.WidthRequest = 60;
			hbox.PackEnd (okButton, false, false, 0); 

			var list = new List<string> ();
			list.Add (string.Format ("Convert to {0} line endings", GetEolString (textEditor.Options.DefaultEolMarker)));
			if (multiple)
				list.Add (string.Format ("Convert all files to {0} line endings", GetEolString (textEditor.Options.DefaultEolMarker)));
			list.Add (string.Format ("Keep {0} line endings", GetEolString (DetectedEolMarker)));
			if (multiple)
				list.Add (string.Format ("Keep {0} line endings in all files", GetEolString (DetectedEolMarker)));
			var combo = new ComboBox (list.ToArray ());
			combo.Active = 0;
			hbox.PackEnd (combo, false, false, 0);
			var container = new HBox ();
			const int containerPadding = 8;
			container.PackStart (hbox, true, true, containerPadding); 
			messageOverlayWindow.Child = container; 
			messageOverlayWindow.ShowOverlay (this.TextEditor);

			messageOverlayWindow.SizeFunc = () => {
				return okButton.SizeRequest ().Width +
					combo.SizeRequest ().Width +
					image.SizeRequest ().Width +
					w +
					hbox.Spacing * 4 + 
					containerPadding * 2;
			};
			image.Clicked += delegate {
				UseIncorrectMarkers = true;
				view.WorkbenchWindow.ShowNotification = false;
				RemoveMessageBar ();
			};
			okButton.Clicked += delegate {
				if (multiple) {
					switch (combo.Active) {
					case 0:
						ConvertLineEndings ();
						view.WorkbenchWindow.ShowNotification = false;
						view.Save (fileName, view.SourceEncoding);
						break;
					case 1:
						FileRegistry.ConvertLineEndingsInAllFiles ();
						break;
					case 2:
						UseIncorrectMarkers = true;
						view.WorkbenchWindow.ShowNotification = false;
						break;
					case 3:
						FileRegistry.IgnoreLineEndingsInAllFiles ();
						break;
					}
				} else {
					switch (combo.Active) {
					case 0:
						ConvertLineEndings ();
						view.WorkbenchWindow.ShowNotification = false;
						view.Save (fileName, view.SourceEncoding);
						break;
					case 1:
						UseIncorrectMarkers = true;
						view.WorkbenchWindow.ShowNotification = false;
						break;
					}
				}
				RemoveMessageBar ();
			};
		}

		void ShowIncorrectEolMarkers (string fileName, bool multiple)
		{
			RemoveMessageBar ();
			var hbox = new HBox ();
			hbox.Spacing = 8;

			var image = new HoverCloseButton ();
			hbox.PackStart (image, false, false, 0);
			var label = new Label (string.Format ("This file has line endings ({0}) which differ from the policy settings ({1}).", GetEolString (DetectedEolMarker), GetEolString (textEditor.Options.DefaultEolMarker)));
			var color = (HslColor)textEditor.ColorStyle.NotificationText.Foreground;
			label.ModifyFg (StateType.Normal, color);

			int w, h;
			label.Layout.GetPixelSize (out w, out h);
			label.Ellipsize = Pango.EllipsizeMode.End;

			hbox.PackStart (label, true, true, 0);
			var okButton = new Button (Gtk.Stock.Ok);
			okButton.WidthRequest = 60;

			// Small amount of vertical padding for the OK button.
			const int verticalPadding = 2;
			var vbox = new VBox ();
			vbox.PackEnd (okButton, true, true, verticalPadding);
			hbox.PackEnd (vbox, false, false, 0);

			var list = new List<string> ();
			list.Add (string.Format ("Convert to {0} line endings", GetEolString (textEditor.Options.DefaultEolMarker)));
			list.Add (string.Format ("Convert all files to {0} line endings", GetEolString (textEditor.Options.DefaultEolMarker)));
			list.Add (string.Format ("Keep {0} line endings", GetEolString (DetectedEolMarker)));
			list.Add (string.Format ("Keep {0} line endings in all files", GetEolString (DetectedEolMarker)));
			var combo = new ComboBox (list.ToArray ());
			combo.Active = 0;
			hbox.PackEnd (combo, false, false, 0);
			incorrectEolMessage = new HBox ();
			const int containerPadding = 8;
			incorrectEolMessage.PackStart (hbox, true, true, containerPadding); 

			// This is hacky, but it will ensure that our combo appears with with the correct size.
			GLib.Timeout.Add (100, delegate {
				combo.QueueResize ();
				return false;
			});

			AddOverlay (incorrectEolMessage, () => {
				return okButton.SizeRequest ().Width +
							   combo.SizeRequest ().Width +
							   image.SizeRequest ().Width +
							   w +
							   hbox.Spacing * 4 +
							   containerPadding * 2;
			});

			image.Clicked += delegate {
				UseIncorrectMarkers = true;
				view.WorkbenchWindow.ShowNotification = false;
				RemoveMessageBar ();
			};
			okButton.Clicked += delegate {
				switch (combo.Active) {
				case 0:
					ConvertLineEndings ();
					view.WorkbenchWindow.ShowNotification = false;
					view.Save (fileName, view.SourceEncoding);
					break;
				case 1:
					FileRegistry.ConvertLineEndingsInAllFiles ();
					break;
				case 2:
					UseIncorrectMarkers = true;
					view.WorkbenchWindow.ShowNotification = false;
					break;
				case 3:
					FileRegistry.IgnoreLineEndingsInAllFiles ();
					break;
				}
				RemoveMessageBar ();
			};
		}