source: trunk/HeuristicLab.ExtLibs/HeuristicLab.AvalonEdit/5.0.1/AvalonEdit-5.0.1/Rendering/VisualLineElementTextRunProperties.cs

// Copyright (c) 2014 AlphaSierraPapa for the SharpDevelop Team
// 
// Permission is hereby granted, free of charge, to any person obtaining a copy of this
// software and associated documentation files (the "Software"), to deal in the Software
// without restriction, including without limitation the rights to use, copy, modify, merge,
// publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons
// to whom the Software is furnished to do so, subject to the following conditions:
// 
// The above copyright notice and this permission notice shall be included in all copies or
// substantial portions of the Software.
// 
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
// INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
// PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE
// FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
// DEALINGS IN THE SOFTWARE.

using System;
using System.Globalization;
using System.Windows;
using System.Windows.Media;
using System.Windows.Media.TextFormatting;
using ICSharpCode.AvalonEdit.Utils;

namespace ICSharpCode.AvalonEdit.Rendering
{
  /// <summary>
  /// <see cref="TextRunProperties"/> implementation that allows changing the properties.
  /// A <see cref="VisualLineElementTextRunProperties"/> instance usually is assigned to a single
  /// <see cref="VisualLineElement"/>.
  /// </summary>
  public class VisualLineElementTextRunProperties : TextRunProperties, ICloneable
  {
    Brush backgroundBrush;
    BaselineAlignment baselineAlignment;
    CultureInfo cultureInfo;
    double fontHintingEmSize;
    double fontRenderingEmSize;
    Brush foregroundBrush;
    Typeface typeface;
    TextDecorationCollection textDecorations;
    TextEffectCollection textEffects;
    TextRunTypographyProperties typographyProperties;
    NumberSubstitution numberSubstitution;
    
    /// <summary>
    /// Creates a new VisualLineElementTextRunProperties instance that copies its values
    /// from the specified <paramref name="textRunProperties"/>.
    /// For the <see cref="TextDecorations"/> and <see cref="TextEffects"/> collections, deep copies
    /// are created if those collections are not frozen.
    /// </summary>
    public VisualLineElementTextRunProperties(TextRunProperties textRunProperties)
    {
      if (textRunProperties == null)
        throw new ArgumentNullException("textRunProperties");
      backgroundBrush = textRunProperties.BackgroundBrush;
      baselineAlignment = textRunProperties.BaselineAlignment;
      cultureInfo = textRunProperties.CultureInfo;
      fontHintingEmSize = textRunProperties.FontHintingEmSize;
      fontRenderingEmSize = textRunProperties.FontRenderingEmSize;
      foregroundBrush = textRunProperties.ForegroundBrush;
      typeface = textRunProperties.Typeface;
      textDecorations = textRunProperties.TextDecorations;
      if (textDecorations != null && !textDecorations.IsFrozen) {
        textDecorations = textDecorations.Clone();
      }
      textEffects = textRunProperties.TextEffects;
      if (textEffects != null && !textEffects.IsFrozen) {
        textEffects = textEffects.Clone();
      }
      typographyProperties = textRunProperties.TypographyProperties;
      numberSubstitution = textRunProperties.NumberSubstitution;
    }
    
    /// <summary>
    /// Creates a copy of this instance.
    /// </summary>
    public virtual VisualLineElementTextRunProperties Clone()
    {
      return new VisualLineElementTextRunProperties(this);
    }
    
    object ICloneable.Clone()
    {
      return Clone();
    }
    
    /// <inheritdoc/>
    public override Brush BackgroundBrush {
      get { return backgroundBrush; }
    }
    
    /// <summary>
    /// Sets the <see cref="BackgroundBrush"/>.
    /// </summary>
    public void SetBackgroundBrush(Brush value)
    {
      ExtensionMethods.CheckIsFrozen(value);
      backgroundBrush = value;
    }
    
    /// <inheritdoc/>
    public override BaselineAlignment BaselineAlignment {
      get { return baselineAlignment; }
    }
    
    /// <summary>
    /// Sets the <see cref="BaselineAlignment"/>.
    /// </summary>
    public void SetBaselineAlignment(BaselineAlignment value)
    {
      baselineAlignment = value;
    }
    
    /// <inheritdoc/>
    public override CultureInfo CultureInfo {
      get { return cultureInfo; }
    }
    
    /// <summary>
    /// Sets the <see cref="CultureInfo"/>.
    /// </summary>
    public void SetCultureInfo(CultureInfo value)
    {
      if (value == null)
        throw new ArgumentNullException("value");
      cultureInfo = value;
    }
    
    /// <inheritdoc/>
    public override double FontHintingEmSize {
      get { return fontHintingEmSize; }
    }
    
    /// <summary>
    /// Sets the <see cref="FontHintingEmSize"/>.
    /// </summary>
    public void SetFontHintingEmSize(double value)
    {
      fontHintingEmSize = value;
    }
    
    /// <inheritdoc/>
    public override double FontRenderingEmSize {
      get { return fontRenderingEmSize; }
    }
    
    /// <summary>
    /// Sets the <see cref="FontRenderingEmSize"/>.
    /// </summary>
    public void SetFontRenderingEmSize(double value)
    {
      fontRenderingEmSize = value;
    }
    
    /// <inheritdoc/>
    public override Brush ForegroundBrush {
      get { return foregroundBrush; }
    }
    
    /// <summary>
    /// Sets the <see cref="ForegroundBrush"/>.
    /// </summary>
    public void SetForegroundBrush(Brush value)
    {
      ExtensionMethods.CheckIsFrozen(value);
      foregroundBrush = value;
    }
    
    /// <inheritdoc/>
    public override Typeface Typeface {
      get { return typeface; }
    }
    
    /// <summary>
    /// Sets the <see cref="Typeface"/>.
    /// </summary>
    public void SetTypeface(Typeface value)
    {
      if (value == null)
        throw new ArgumentNullException("value");
      typeface = value;
    }
    
    /// <summary>
    /// Gets the text decorations. The value may be null, a frozen <see cref="TextDecorationCollection"/>
    /// or an unfrozen <see cref="TextDecorationCollection"/>.
    /// If the value is an unfrozen <see cref="TextDecorationCollection"/>, you may assume that the
    /// collection instance is only used for this <see cref="TextRunProperties"/> instance and it is safe
    /// to add <see cref="TextDecoration"/>s.
    /// </summary>
    public override TextDecorationCollection TextDecorations {
      get { return textDecorations; }
    }
    
    /// <summary>
    /// Sets the <see cref="TextDecorations"/>.
    /// </summary>
    public void SetTextDecorations(TextDecorationCollection value)
    {
      ExtensionMethods.CheckIsFrozen(value);
      textDecorations = value;
    }
    
    /// <summary>
    /// Gets the text effects. The value may be null, a frozen <see cref="TextEffectCollection"/>
    /// or an unfrozen <see cref="TextEffectCollection"/>.
    /// If the value is an unfrozen <see cref="TextEffectCollection"/>, you may assume that the
    /// collection instance is only used for this <see cref="TextRunProperties"/> instance and it is safe
    /// to add <see cref="TextEffect"/>s.
    /// </summary>
    public override TextEffectCollection TextEffects {
      get { return textEffects; }
    }
    
    /// <summary>
    /// Sets the <see cref="TextEffects"/>.
    /// </summary>
    public void SetTextEffects(TextEffectCollection value)
    {
      ExtensionMethods.CheckIsFrozen(value);
      textEffects = value;
    }
    
    /// <summary>
    /// Gets the typography properties for the text run.
    /// </summary>
    public override TextRunTypographyProperties TypographyProperties {
      get { return typographyProperties; }
    }
    
    /// <summary>
    /// Sets the <see cref="TypographyProperties"/>.
    /// </summary>
    public void SetTypographyProperties(TextRunTypographyProperties value)
    {
      typographyProperties = value;
    }
    
    /// <summary>
    /// Gets the number substitution settings for the text run.
    /// </summary>
    public override NumberSubstitution NumberSubstitution {
      get { return numberSubstitution; }
    }
    
    /// <summary>
    /// Sets the <see cref="NumberSubstitution"/>.
    /// </summary>
    public void SetNumberSubstitution(NumberSubstitution value)
    {
      numberSubstitution = value;
    }
  }
}