2 // System.Drawing.FontConverter.cs
5 // Dennis Hayes (dennish@Raytek.com)
6 // Gonzalo Paniagua Javier (gonzalo@ximian.com)
7 // Ravindra (rkumar@novell.com)
9 // Copyright (C) 2002,2003 Ximian, Inc. http://www.ximian.com
11 // Copyright (C) 2004-2006 Novell, Inc (http://www.novell.com)
13 // Permission is hereby granted, free of charge, to any person obtaining
14 // a copy of this software and associated documentation files (the
15 // "Software"), to deal in the Software without restriction, including
16 // without limitation the rights to use, copy, modify, merge, publish,
17 // distribute, sublicense, and/or sell copies of the Software, and to
18 // permit persons to whom the Software is furnished to do so, subject to
19 // the following conditions:
21 // The above copyright notice and this permission notice shall be
22 // included in all copies or substantial portions of the Software.
24 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
25 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
26 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
27 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
28 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
29 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
30 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
35 using System.Collections;
36 using System.ComponentModel;
37 using System.Globalization;
38 using System.Drawing.Text;
39 using System.ComponentModel.Design.Serialization;
40 using System.Reflection;
42 namespace System.Drawing
44 public class FontConverter : TypeConverter
46 public FontConverter ()
55 public override bool CanConvertFrom (ITypeDescriptorContext context, Type sourceType)
57 if (sourceType == typeof (string))
60 return base.CanConvertFrom (context, sourceType);
63 public override bool CanConvertTo (ITypeDescriptorContext context, Type destinationType)
65 if (destinationType == typeof (String))
68 if (destinationType == typeof (InstanceDescriptor))
71 return base.CanConvertTo (context, destinationType);
74 public override object ConvertTo (ITypeDescriptorContext context,
79 if ((destinationType == typeof (string)) && (value is Font)) {
80 Font font = (Font) value;
81 StringBuilder sb = new StringBuilder ();
82 sb.Append (font.Name).Append (culture.TextInfo.ListSeparator[0] + " ");
83 sb.Append (font.Size);
86 // MS throws ArgumentException, if unit is set
87 // to GraphicsUnit.Display
88 // Don't know what to append for GraphicsUnit.Display
89 case GraphicsUnit.Display:
90 sb.Append ("display"); break;
92 case GraphicsUnit.Document:
93 sb.Append ("doc"); break;
95 case GraphicsUnit.Point:
96 sb.Append ("pt"); break;
98 case GraphicsUnit.Inch:
99 sb.Append ("in"); break;
101 case GraphicsUnit.Millimeter:
102 sb.Append ("mm"); break;
104 case GraphicsUnit.Pixel:
105 sb.Append ("px"); break;
107 case GraphicsUnit.World:
108 sb.Append ("world"); break;
111 if (font.Style != FontStyle.Regular)
112 sb.Append (culture.TextInfo.ListSeparator[0] + " style=").Append (font.Style);
114 return sb.ToString ();
117 if ((destinationType == typeof (InstanceDescriptor)) && (value is Font)) {
118 Font font = (Font) value;
119 ConstructorInfo met = typeof(Font).GetConstructor (new Type[] {typeof(string), typeof(float), typeof(FontStyle), typeof(GraphicsUnit)});
120 object[] args = new object[4];
121 args [0] = font.Name;
122 args [1] = font.Size;
123 args [2] = font.Style;
124 args [3] = font.Unit;
125 return new InstanceDescriptor (met, args);
128 return base.ConvertTo (context, culture, value, destinationType);
131 public override object ConvertFrom (ITypeDescriptorContext context, CultureInfo culture, object value)
140 if (! (value is string)) {
141 return base.ConvertFrom (context, culture, value);
144 font = (string)value;
147 if (font.Length == 0) {
151 if (culture == null) {
152 culture = CultureInfo.CurrentCulture;
155 // Format is FontFamily, size[<units>[, style=1,2,3]]
156 // This is a bit tricky since the comma can be used for styles and fields
157 fields = font.Split(new char[] {culture.TextInfo.ListSeparator[0]});
158 if (fields.Length < 1) {
159 throw new ArgumentException("Failed to parse font format");
165 f_unit = GraphicsUnit.Pixel;
166 if (fields.Length > 1) { // We have a size
167 for (int i = 0; i < fields[1].Length; i++) {
168 if (Char.IsLetter(fields[1][i])) {
169 f_size = (float)TypeDescriptor.GetConverter(typeof(float)).ConvertFromString(context, culture, fields[1].Substring(0, i));
170 units = fields[1].Substring(i);
174 if (units == "display") {
175 f_unit = GraphicsUnit.Display;
176 } else if (units == "doc") {
177 f_unit = GraphicsUnit.Document;
178 } else if (units == "pt") {
179 f_unit = GraphicsUnit.Point;
180 } else if (units == "in") {
181 f_unit = GraphicsUnit.Inch;
182 } else if (units == "mm") {
183 f_unit = GraphicsUnit.Millimeter;
184 } else if (units == "px") {
185 f_unit = GraphicsUnit.Pixel;
186 } else if (units == "world") {
187 f_unit = GraphicsUnit.World;
191 f_style = FontStyle.Regular;
192 if (fields.Length > 2) { // We have style
197 for (int i = 2; i < fields.Length; i++) {
200 if (compare.IndexOf("Regular") != -1) {
201 f_style |= FontStyle.Regular;
203 if (compare.IndexOf("Bold") != -1) {
204 f_style |= FontStyle.Bold;
206 if (compare.IndexOf("Italic") != -1) {
207 f_style |= FontStyle.Italic;
209 if (compare.IndexOf("Strikeout") != -1) {
210 f_style |= FontStyle.Strikeout;
212 if (compare.IndexOf("Underline") != -1) {
213 f_style |= FontStyle.Underline;
218 return new Font (font, f_size, f_style, f_unit);
221 public override object CreateInstance (ITypeDescriptorContext context, IDictionary propertyValues)
227 bool vertical = false;
228 FontStyle style = FontStyle.Regular;
229 FontFamily fontFamily = null;
230 GraphicsUnit unit = GraphicsUnit.Point;
232 if ((value = propertyValues ["GdiCharSet"]) != null)
233 charSet = (byte) value;
235 if ((value = propertyValues ["Size"]) != null)
236 size = (float) value;
238 if ((value = propertyValues ["Unit"]) != null)
239 unit = (GraphicsUnit) value;
241 if ((value = propertyValues ["Name"]) != null)
242 name = (String) value;
244 if ((value = propertyValues ["GdiVerticalFont"]) != null)
245 vertical = (bool) value;
247 if ((value = propertyValues ["Bold"]) != null) {
248 bool bold = (bool) value;
250 style |= FontStyle.Bold;
253 if ((value = propertyValues ["Italic"]) != null) {
254 bool italic = (bool) value;
256 style |= FontStyle.Italic;
259 if ((value = propertyValues ["Strikeout"]) != null) {
260 bool strike = (bool) value;
262 style |= FontStyle.Strikeout;
265 if ((value = propertyValues ["Underline"]) != null) {
266 bool underline = (bool) value;
267 if (underline == true)
268 style |= FontStyle.Underline;
271 /* ?? Should default font be culture dependent ?? */
273 fontFamily = new FontFamily ("Tahoma");
275 name = name.ToLower ();
276 FontCollection collection = new InstalledFontCollection ();
277 FontFamily [] installedFontList = collection.Families;
278 foreach (FontFamily font in installedFontList) {
279 if (name == font.Name.ToLower ()) {
285 // font family not found in installed fonts
286 if (fontFamily == null) {
287 collection = new PrivateFontCollection ();
288 FontFamily [] privateFontList = collection.Families;
289 foreach (FontFamily font in privateFontList) {
290 if (name == font.Name.ToLower ()) {
297 // font family not found in private fonts also
298 if (fontFamily == null)
299 fontFamily = FontFamily.GenericSansSerif;
302 return new Font (fontFamily, size, style, unit, charSet, vertical);
305 public override bool GetCreateInstanceSupported (ITypeDescriptorContext context)
310 public override PropertyDescriptorCollection GetProperties
311 (ITypeDescriptorContext context,
312 object value, Attribute [] attributes)
315 return TypeDescriptor.GetProperties (value, attributes);
317 return base.GetProperties (context, value, attributes);
320 public override bool GetPropertiesSupported (ITypeDescriptorContext context)
325 public sealed class FontNameConverter : TypeConverter
332 public FontNameConverter ()
334 fonts = FontFamily.Families;
337 void IDisposable.Dispose ()
341 public override bool CanConvertFrom (ITypeDescriptorContext context, Type sourceType)
343 if (sourceType == typeof (string))
346 return base.CanConvertFrom (context, sourceType);
349 public override object ConvertFrom (ITypeDescriptorContext context, CultureInfo culture, object value)
353 return base.ConvertFrom (context, culture, value);
356 public override StandardValuesCollection GetStandardValues (ITypeDescriptorContext context)
358 string [] values = new string [fonts.Length];
359 for (int i = fonts.Length; i > 0;){
361 values [i] = fonts [i].Name;
364 return new TypeConverter.StandardValuesCollection (values);
367 public override bool GetStandardValuesExclusive (ITypeDescriptorContext context)
369 // We allow other values other than those in the font list.
373 public override bool GetStandardValuesSupported (ITypeDescriptorContext context)
375 // Yes, we support picking an element from the list.
380 public class FontUnitConverter : EnumConverter
382 public FontUnitConverter () : base (typeof (GraphicsUnit)) {}
384 public override StandardValuesCollection GetStandardValues (ITypeDescriptorContext context)
386 return base.GetStandardValues (context);