/// <inheritdoc/>
public Boolean Equals(ShapedStringBuilder other)
{
if (other == null || other.Length != Length)
{
return(false);
}
if (IsEmpty && other.Length == 0)
{
return(true);
}
if (Source is IStringSource <ShapedChar> src)
{
for (int ixstr = Start, ixother = 0; ixother < Length; ixstr++, ixother++)
{
if (src[ixstr] != other[ixother])
{
return(false);
}
}
return(true);
}
return(false);
}
/// <summary>
/// Initializes a new instance of the <see cref="ShapedStringSegment"/> structure.
/// </summary>
/// <param name="source">The source <see cref="ShapedStringBuilder"/> object from which the segment's shaped characters are retrieved.</param>
public ShapedStringSegment(ShapedStringBuilder source)
{
Contract.Require(source, nameof(source));
this.Source = source;
this.Start = 0;
this.Length = source.Length;
this.hashCode = CalculateHashCode(source, 0, source.Length);
}
/// <summary>
/// Initializes a new instance of the <see cref="ShapedStringSegment"/> structure.
/// </summary>
/// <param name="source">The source <see cref="ShapedStringBuilder"/> object from which the segment's characters are retrieved.</param>
/// <param name="start">The index of the segment's first shaped character within its parent shaped string.</param>
/// <param name="length">The number of shaped characters in the string segment.</param>
public ShapedStringSegment(ShapedStringBuilder source, Int32 start, Int32 length)
{
Contract.Require(source, nameof(source));
Contract.EnsureRange(start >= 0 && start <= source.Length, nameof(start));
Contract.EnsureRange(length >= 0 && start + length <= source.Length, nameof(length));
this.Source = source;
this.Start = start;
this.Length = length;
this.hashCode = CalculateHashCode(source, start, length);
}
/// <summary> /// Appends the contents of a subset of this shaping buffer to the specified <see cref="ShapedStringBuilder"/> instance. /// </summary> /// <param name="builder">The <see cref="ShapedStringBuilder"/> instance to which to append this shaper's contents.</param> /// <param name="fontFace">The font face with which to shape the string.</param> /// <param name="start">The offset of the character in the original string which corresponds to the beginning of the shaped substring.</param> /// <param name="length">The number of characters in the raw substring from which to create the shaped substring.</param> /// <param name="sourceIndexOffset">The offset which is applied to the source indices assigned to shaped characters in the resulting string.</param> public abstract void AppendTo(ShapedStringBuilder builder, UltravioletFontFace fontFace, Int32 start, Int32 length, Int32 sourceIndexOffset = 0);