Gtk# font viewer

.gitignore

bin
*.pidb
*.userprefs

FontList.cs

using Pango;
using System;
using System.Collections.Generic;
using Gtk;

namespace fontviewer {
	public class FontList: TreeView {
		public new ListStore Model {
			get { return (ListStore) base.Model; }
			set { base.Model = value; }
		}

		public FontList() {
			Model = new ListStore(typeof (string), typeof (int), typeof(FontFamily));

			TreeViewColumn columnCount = new TreeViewColumn();
			columnCount.Title = "Fonts";
			AppendColumn(columnCount);
			CellRendererText cellCount = new CellRendererText();
			columnCount.PackStart(cellCount, true);
			columnCount.AddAttribute(cellCount, "text", 1);

			TreeViewColumn columnName = new TreeViewColumn();
			columnName.Title = "Family";
			AppendColumn(columnName);
			CellRendererText cellName = new CellRendererText();
			columnName.PackStart(cellName, true);
			columnName.AddAttribute(cellName, "text", 0);

			FontFamily[] f = PangoContext.Families;
			Array.Sort(f, new SortFontFamilies());
			int sansIndex = 0;
			for (int i = 0; i < f.Length; ++i) {
				FontFamily it = f[i];
				if (it.Name.ToLower().Equals("sans")) sansIndex = i;
				Model.AppendValues(it.Name, it.Faces.Length, it);
			}
			TreePath p = new TreePath(new int[] { sansIndex });
			Selection.SelectPath(p);
			ScrollToCell(p, columnName, false, 0, 0);
		}

		public string SelectedFamily {
			get {
				String family = "sans";
				TreeIter iter;
				Selection.GetSelected(out iter);
				try { family = (string) Model.GetValue(iter, 0); }
				catch(Exception) {}
				if (family == null) family = "sans";
				return family;
			}
			set {
				throw new NotImplementedException();
			}
		}

		private class SortFontFamilies: IComparer<FontFamily> {
			public int Compare(FontFamily a, FontFamily b) {
				if (a == null && b == null) return 0;
				if (a == null) return -1;
				if (b == null) return 1;
				return String.Compare(a.Name, b.Name);
			}
		}
	}
}

fontviewer.mdp

<Project name="fontviewer" fileversion="2.0" language="C#" clr-version="Net_2_0" ctype="DotNetProject">
  <Configurations active="Debug">
    <Configuration name="Debug" ctype="DotNetProjectConfiguration">
      <Output directory="bin/Debug" assembly="fontviewer" />
      <Build debugmode="True" target="Exe" />
      <Execution runwithwarnings="True" consolepause="True" runtime="MsNet" clr-version="Net_2_0" />
      <CodeGeneration compiler="Mcs" warninglevel="4" optimize="True" unsafecodeallowed="False" generateoverflowchecks="True" definesymbols="DEBUG" generatexmldocumentation="False" ctype="CSharpCompilerParameters" />
    </Configuration>
    <Configuration name="Release" ctype="DotNetProjectConfiguration">
      <Output directory="bin/Release" assembly="fontviewer" />
      <Build debugmode="False" target="Exe" />
      <Execution runwithwarnings="True" consolepause="True" runtime="MsNet" clr-version="Net_2_0" />
      <CodeGeneration compiler="Mcs" warninglevel="4" optimize="True" unsafecodeallowed="False" generateoverflowchecks="True" generatexmldocumentation="False" ctype="CSharpCompilerParameters" />
    </Configuration>
  </Configurations>
  <Contents>
    <File name="MainWindow.cs" subtype="Code" buildaction="Compile" />
    <File name="FontList.cs" subtype="Code" buildaction="Compile" />
  </Contents>
  <References>
    <ProjectReference type="Gac" localcopy="True" refto="gtk-sharp, Version=2.12.0.0, Culture=neutral, PublicKeyToken=35e10195dab3c99f" />
    <ProjectReference type="Gac" localcopy="True" refto="pango-sharp, Version=2.12.0.0, Culture=neutral, PublicKeyToken=35e10195dab3c99f" />
  </References>
</Project>

fontviewer.mds

<Combine name="fontviewer" fileversion="2.0">
  <Configurations active="Debug">
    <Configuration name="Debug" ctype="CombineConfiguration">
      <Entry build="True" name="fontviewer" configuration="Debug" />
    </Configuration>
    <Configuration name="Release" ctype="CombineConfiguration">
      <Entry build="True" name="fontviewer" configuration="Release" />
    </Configuration>
  </Configurations>
  <StartMode startupentry="fontviewer" single="True">
    <Execute type="None" entry="fontviewer" />
  </StartMode>
  <Entries>
    <Entry filename="fontviewer.mdp" />
  </Entries>
</Combine>

MainWindow.cs

using Pango;
using System;
using System.Collections.Generic;
using Gtk;

namespace fontviewer {
	public class MainWindow: Window {
		public static void Main(string[] args) {
			Application.Init();
			new MainWindow();
			Application.Run();
		}
		
		public MainWindow(): base (WindowType.Toplevel) {
			Build();
			
			TreeViewColumn columnVariant = new TreeViewColumn();
			columnVariant.Title = "Variant";
			faceList.AppendColumn(columnVariant);
			
			CellRendererText cellVariant = new CellRendererText();
			columnVariant.PackStart(cellVariant, true);
			columnVariant.AddAttribute(cellVariant, "text", 0);
			
			fontList.Selection.Changed += new EventHandler(fontListSelected);
			sizeScale.Value = 8;
		}
		
		protected void OnDeleteEvent(object sender, DeleteEventArgs a) {
			Application.Quit();
			a.RetVal = true;
		}

		protected void fontListSelected (object o, EventArgs args) {
			ListStore faceModel = new ListStore(typeof (string));
			TreeIter iter;
			fontList.Selection.GetSelected(out iter);
			if (iter.UserData.ToInt32() != 0) {
				FontFamily family = (FontFamily) fontList.Model.GetValue(iter, 2);
				FontFace[] f = family.Faces;
				faceList.Model = faceModel;
				for (int i = 0; i < f.Length; ++i) {
					FontFace it = f[i];
					faceModel.AppendValues(it.FaceName);
				}
			}
			updateFont();
		}
		
		int getFontSize() {
			return (int) (Pango.Scale.PangoScale * sizeScale.Value);
		}

		protected void OnSizeScaleValueChanged (object sender, EventArgs e) {
			updateFont();
		}
		
		void updateFont() {
			FontDescription font = new FontDescription();

			font.Family = fontList.SelectedFamily;
			font.Size = getFontSize();

			preview.ModifyFont(font);
		}

		private VPaned vbox1;
		private HBox hbox1;
		private ScrolledWindow fontScroll;
		private FontList fontList;
		private ScrolledWindow faceScroll;
		private TreeView faceList;
		private VScale sizeScale;
		private ScrolledWindow previewScroll;
		private TextView preview;

		protected virtual void Build() {
			// Widget MainWindow
			Name = "MainWindow";
			Title = "Font Viewer";

			vbox1 = new VPaned();
			vbox1.Position = 200;

			hbox1 = new HBox();
			hbox1.Spacing = 6;

			fontScroll = new ScrolledWindow();
			fontScroll.HscrollbarPolicy = PolicyType.Never;

			fontList = new FontList();
			fontScroll.Add(fontList);
			hbox1.Add(fontScroll);
			Box.BoxChild w2 = (Box.BoxChild) hbox1[fontScroll];
			w2.Expand = false;

			faceScroll = new ScrolledWindow();
			faceScroll.HscrollbarPolicy = PolicyType.Never;

			faceList = new TreeView();
			faceScroll.Add(faceList);
			hbox1.Add(faceScroll);
			Box.BoxChild w4 = (Box.BoxChild) hbox1[faceScroll];
			w4.Expand = false;

			sizeScale = new VScale(0, 100, 1);
			sizeScale.Adjustment.PageIncrement = 8;
			sizeScale.Inverted = true;
			sizeScale.ValuePos = PositionType.Left;
			hbox1.Add(sizeScale);
			Box.BoxChild w5 = (Box.BoxChild) hbox1[sizeScale];
			w5.Expand = false;

			previewScroll = new ScrolledWindow();
			previewScroll.ShadowType = ((ShadowType)(1));

			preview = new TextView();
			preview.Buffer.Text = "AaBbCcDdEeFfGgHhIiJjKkLlMmNnOoPpQqRrSsTtUuVvWwXxYyZz0123456789";
			preview.AcceptsTab = false;
			preview.WrapMode = Gtk.WrapMode.Char;
			previewScroll.Add(preview);
			vbox1.Add(hbox1);
			vbox1.Add(previewScroll);
			Add(vbox1);
			DefaultWidth = 640;
			DefaultHeight = 480;
			ShowAll();
			DeleteEvent += new DeleteEventHandler(OnDeleteEvent);
			sizeScale.ValueChanged += new System.EventHandler(OnSizeScaleValueChanged);
	    }
	}
}