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// Copyright (c) AlphaSierraPapa for the SharpDevelop Team (for details please see \doc\copyright.txt)
// This code is distributed under the GNU LGPL (for details please see \doc\license.txt)
using System;
using System.Globalization;
using ICSharpCode.AvalonEdit.Document;
namespace ICSharpCode.AvalonEdit
{
/// <summary>
/// Represents a text location with a visual column.
/// </summary>
public struct TextViewPosition : IEquatable<TextViewPosition>
{
int line, column, visualColumn;
/// <summary>
/// Gets/Sets Location.
/// </summary>
public TextLocation Location {
get {
return new TextLocation(line, column);
}
set {
line = value.Line;
column = value.Column;
}
}
/// <summary>
/// Gets/Sets the line number.
/// </summary>
public int Line {
get { return line; }
set { line = value; }
}
/// <summary>
/// Gets/Sets the (text) column number.
/// </summary>
public int Column {
get { return column; }
set { column = value; }
}
/// <summary>
/// Gets/Sets the visual column number.
/// Can be -1 (meaning unknown visual column).
/// </summary>
public int VisualColumn {
get { return visualColumn; }
set { visualColumn = value; }
}
/// <summary>
/// Creates a new TextViewPosition instance.
/// </summary>
public TextViewPosition(int line, int column, int visualColumn)
{
this.line = line;
this.column = column;
this.visualColumn = visualColumn;
}
/// <summary>
/// Creates a new TextViewPosition instance.
/// </summary>
public TextViewPosition(int line, int column)
: this(line, column, -1)
{
}
/// <summary>
/// Creates a new TextViewPosition instance.
/// </summary>
public TextViewPosition(TextLocation location, int visualColumn)
{
this.line = location.Line;
this.column = location.Column;
this.visualColumn = visualColumn;
}
/// <summary>
/// Creates a new TextViewPosition instance.
/// </summary>
public TextViewPosition(TextLocation location)
: this(location, -1)
{
}
/// <inheritdoc/>
public override string ToString()
{
return string.Format(CultureInfo.InvariantCulture,
"[TextViewPosition Line={0} Column={1} VisualColumn={2}]",
this.line, this.column, this.visualColumn);
}
/// <summary>
/// Implicit conversion to <see cref="TextLocation"/>.
/// </summary>
[Obsolete("Use the Location property instead of the implicit conversion to TextLocation")]
public static implicit operator TextLocation(TextViewPosition position)
{
return new TextLocation(position.Line, position.Column);
}
#region Equals and GetHashCode implementation
// The code in this region is useful if you want to use this structure in collections.
// If you don't need it, you can just remove the region and the ": IEquatable<Struct1>" declaration.
/// <inheritdoc/>
public override bool Equals(object obj)
{
if (obj is TextViewPosition)
return Equals((TextViewPosition)obj); // use Equals method below
else
return false;
}
/// <inheritdoc/>
public override int GetHashCode()
{
int hashCode = 0;
unchecked {
hashCode += 1000000007 * Line.GetHashCode();
hashCode += 1000000009 * Column.GetHashCode();
hashCode += 1000000021 * VisualColumn.GetHashCode();
}
return hashCode;
}
/// <summary>
/// Equality test.
/// </summary>
public bool Equals(TextViewPosition other)
{
return this.Line == other.Line && this.Column == other.Column && this.VisualColumn == other.VisualColumn;
}
/// <summary>
/// Equality test.
/// </summary>
public static bool operator ==(TextViewPosition left, TextViewPosition right)
{
return left.Equals(right);
}
/// <summary>
/// Inequality test.
/// </summary>
public static bool operator !=(TextViewPosition left, TextViewPosition right)
{
return !(left.Equals(right)); // use operator == and negate result
}
#endregion
}
}
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