212 lines
8.5 KiB
C#
212 lines
8.5 KiB
C#
#region PDFsharp - A .NET library for processing PDF
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//
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// Authors:
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// Stefan Lange
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//
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// Copyright (c) 2005-2017 empira Software GmbH, Cologne Area (Germany)
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//
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// http://www.pdfsharp.com
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// http://sourceforge.net/projects/pdfsharp
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//
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// Permission is hereby granted, free of charge, to any person obtaining a
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// copy of this software and associated documentation files (the "Software"),
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// to deal in the Software without restriction, including without limitation
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// the rights to use, copy, modify, merge, publish, distribute, sublicense,
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// and/or sell copies of the Software, and to permit persons to whom the
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// Software is furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included
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// in all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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// THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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// DEALINGS IN THE SOFTWARE.
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#endregion
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using System;
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using System.Diagnostics;
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using System.Globalization;
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using PdfSharp.Drawing;
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#if CORE
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using System.Drawing;
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#endif
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#if GDI
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using System.Drawing;
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#endif
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#if WPF
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using System.Windows.Media;
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#endif
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namespace PdfSharp.Fonts
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{
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// The English terms font, font family, typeface, glyph etc. are sometimes confusingly used.
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// Here a short clarification by Wikipedia.
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//
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// Wikipedia EN -> DE
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// Font -> Schriftschnitt
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// Computer font -> Font (Informationstechnik)
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// Typeface (Font family) -> Schriftart / Schriftfamilie
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// Glyph -> Glyphe
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//
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// It seems that typeface and font family are synonyms in English.
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// In WPF a family name is used as a term for a bunch of fonts that share the same
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// characteristics, like Univers or Times New Roman.
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// In WPF a fontface describes a request of a font of a particular font family, e.g.
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// Univers medium bold italic.
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// In WPF a glyph typeface is the result of requesting a typeface, i.e. a physical font
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// plus the information whether bold and/or italic should be simulated.
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//
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// Wikipedia DE -> EN
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// Schriftart -> Typeface
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// Schriftschnitt -> Font
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// Schriftfamilie -> ~ (means Font family)
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// Schriftsippe -> Font superfamily
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// Font -> Computer font
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//
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// http://en.wikipedia.org/wiki/Font
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// http://en.wikipedia.org/wiki/Computer_font
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// http://en.wikipedia.org/wiki/Typeface
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// http://en.wikipedia.org/wiki/Glyph
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// http://en.wikipedia.org/wiki/Typographic_unit
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//
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// FaceName: A unique and only internally used name of a glyph typeface. In other words the name of the font data that represents a specific font.
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//
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//
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/// <summary>
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/// Describes the physical font that must be used to render a particular XFont.
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/// </summary>
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[DebuggerDisplay("{DebuggerDisplay}")]
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public class FontResolverInfo
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{
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private const string KeyPrefix = "frik:"; // Font Resolver Info Key
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/// <summary>
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/// Initializes a new instance of the <see cref="FontResolverInfo"/> struct.
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/// </summary>
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/// <param name="faceName">The name that uniquely identifies the fontface.</param>
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public FontResolverInfo(string faceName) :
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this(faceName, false, false, 0)
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{ }
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/// <summary>
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/// Initializes a new instance of the <see cref="FontResolverInfo"/> struct.
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/// </summary>
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/// <param name="faceName">The name that uniquely identifies the fontface.</param>
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/// <param name="mustSimulateBold">Set to <c>true</c> to simulate bold when rendered. Not implemented and must be false.</param>
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/// <param name="mustSimulateItalic">Set to <c>true</c> to simulate italic when rendered.</param>
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/// <param name="collectionNumber">Index of the font in a true type font collection.
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/// Not yet implemented and must be zero.
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/// </param>
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internal FontResolverInfo(string faceName, bool mustSimulateBold, bool mustSimulateItalic, int collectionNumber)
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{
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if (String.IsNullOrEmpty(faceName))
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throw new ArgumentNullException("faceName");
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if (collectionNumber != 0)
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throw new NotImplementedException("collectionNumber is not yet implemented and must be 0.");
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_faceName = faceName;
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_mustSimulateBold = mustSimulateBold;
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_mustSimulateItalic = mustSimulateItalic;
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_collectionNumber = collectionNumber;
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}
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/// <summary>
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/// Initializes a new instance of the <see cref="FontResolverInfo"/> struct.
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/// </summary>
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/// <param name="faceName">The name that uniquely identifies the fontface.</param>
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/// <param name="mustSimulateBold">Set to <c>true</c> to simulate bold when rendered. Not implemented and must be false.</param>
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/// <param name="mustSimulateItalic">Set to <c>true</c> to simulate italic when rendered.</param>
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public FontResolverInfo(string faceName, bool mustSimulateBold, bool mustSimulateItalic)
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: this(faceName, mustSimulateBold, mustSimulateItalic, 0)
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{ }
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/// <summary>
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/// Initializes a new instance of the <see cref="FontResolverInfo" /> struct.
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/// </summary>
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/// <param name="faceName">The name that uniquely identifies the fontface.</param>
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/// <param name="styleSimulations">The style simulation flags.</param>
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public FontResolverInfo(string faceName, XStyleSimulations styleSimulations)
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: this(faceName,
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(styleSimulations & XStyleSimulations.BoldSimulation) == XStyleSimulations.BoldSimulation,
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(styleSimulations & XStyleSimulations.ItalicSimulation) == XStyleSimulations.ItalicSimulation, 0)
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{ }
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/// <summary>
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/// Gets the key for this object.
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/// </summary>
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internal string Key
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{
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get
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{
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return _key ?? (_key = KeyPrefix + _faceName.ToLowerInvariant()
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+ '/' + (_mustSimulateBold ? "b+" : "b-") + (_mustSimulateItalic ? "i+" : "i-"));
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}
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}
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string _key;
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/// <summary>
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/// A name that uniquely identifies the font (not the family), e.g. the file name of the font. PDFsharp does not use this
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/// name internally, but passes it to the GetFont function of the IFontResolver interface to retrieve the font data.
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/// </summary>
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public string FaceName
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{
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get { return _faceName; }
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}
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readonly string _faceName;
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/// <summary>
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/// Indicates whether bold must be simulated. Bold simulation is not implemented in PDFsharp.
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/// </summary>
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public bool MustSimulateBold
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{
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get { return _mustSimulateBold; }
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}
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readonly bool _mustSimulateBold;
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/// <summary>
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/// Indicates whether italic must be simulated.
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/// </summary>
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public bool MustSimulateItalic
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{
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get { return _mustSimulateItalic; }
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}
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readonly bool _mustSimulateItalic;
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/// <summary>
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/// Gets the style simulation flags.
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/// </summary>
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public XStyleSimulations StyleSimulations
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{
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get { return (_mustSimulateBold ? XStyleSimulations.BoldSimulation : 0) | (_mustSimulateItalic ? XStyleSimulations.ItalicSimulation : 0); }
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}
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/// <summary>
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/// The number of the font in a Truetype font collection file. The number of the first font is 0.
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/// NOT YET IMPLEMENTED. Must be zero.
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/// </summary>
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internal int CollectionNumber // TODO : Find a better name.
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{
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get { return _collectionNumber; }
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}
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readonly int _collectionNumber;
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/// <summary>
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/// Gets the DebuggerDisplayAttribute text.
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/// </summary>
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internal string DebuggerDisplay
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{
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get
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{
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return string.Format(CultureInfo.InvariantCulture, "FontResolverInfo: '{0}',{1}{2}", FaceName,
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MustSimulateBold ? " simulate Bold" : "",
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MustSimulateItalic ? " simulate Italic" : "");
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}
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}
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}
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}
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