/// <summary>
/// Calculates the size of the specified parser token when rendered according to the current layout state.
/// </summary>
/// <param name="font">The current font face.</param>
/// <param name="tokenType">The type of the current token.</param>
/// <param name="tokenText">The text of the current token.</param>
/// <param name="tokenNext">The next token after the current token, excluding command tokens.</param>
/// <returns>The size of the specified token in pixels.</returns>
private Size2 MeasureToken(SpriteFontFace font, TextParserTokenType tokenType, StringSegment tokenText, TextParserToken?tokenNext = null)
{
switch (tokenType)
{
case TextParserTokenType.Icon:
{
TextIconInfo icon;
if (!registeredIcons.TryGetValue(tokenText, out icon))
{
throw new InvalidOperationException(UltravioletStrings.UnrecognizedIcon.Format(tokenText));
}
return(new Size2(icon.Width ?? icon.Icon.Controller.Width, icon.Height ?? icon.Icon.Controller.Height));
}
case TextParserTokenType.Text:
{
var size = font.MeasureString(tokenText);
if (tokenNext.HasValue)
{
var tokenNextValue = tokenNext.GetValueOrDefault();
if (tokenNextValue.TokenType == TextParserTokenType.Text && !tokenNextValue.Text.IsEmpty && !tokenNextValue.IsNewLine)
{
var charLast = tokenText[tokenText.Length - 1];
var charNext = tokenNextValue.Text[0];
var kerning = font.Kerning.Get(charLast, charNext);
return(new Size2(size.Width + kerning, size.Height));
}
}
return(size);
}
}
return(Size2.Zero);
}
/// <summary>
/// Initializes a new instance of the <see cref="TextParserToken"/> structure.
/// </summary>
/// <param name="tokenType">The token's type.</param>
/// <param name="text">The token's text.</param>
/// <param name="sourceOffset">The offset of the first character in the source text that produced this token.</param>
/// <param name="sourceLength">The number of characters in the source text that produced this token.</param>
/// <param name="isNonBreakingSpace">A value indicating whether this token represents a non-breaking space.</param>
internal TextParserToken(TextParserTokenType tokenType, StringSegment text, Int32 sourceOffset, Int32 sourceLength, Boolean isNonBreakingSpace = false)
{
this.tokenType = tokenType;
this.text = text;
this.sourceOffset = sourceOffset;
this.sourceLength = sourceLength;
this.isNonBreakingSpace = isNonBreakingSpace;
}
/// <summary>
/// Initializes a new instance of the <see cref="TextParserToken"/> structure.
/// </summary>
/// <param name="tokenType">The token's type.</param>
/// <param name="text">The token's text.</param>
/// <param name="sourceOffset">The offset of the first character in the source text that produced this token.</param>
/// <param name="sourceLength">The number of characters in the source text that produced this token.</param>
/// <param name="isNonBreakingSpace">A value indicating whether this token represents a non-breaking space.</param>
internal TextParserToken(TextParserTokenType tokenType, StringSegment text, Int32 sourceOffset, Int32 sourceLength, Boolean isNonBreakingSpace = false)
{
this.tokenType = tokenType;
this.text = text;
this.sourceOffset = sourceOffset;
this.sourceLength = sourceLength;
this.isNonBreakingSpace = isNonBreakingSpace;
}
/// <summary>
/// Calculates the size of the specified parser token when rendered according to the current layout state.
/// </summary>
/// <param name="font">The current font face.</param>
/// <param name="tokenType">The type of the current token.</param>
/// <param name="tokenText">The text of the current token.</param>
/// <param name="tokenNext">The next token after the current token, excluding command tokens.</param>
/// <returns>The size of the specified token in pixels.</returns>
private Size2 MeasureToken(SpriteFontFace font, TextParserTokenType tokenType, StringSegment tokenText, TextParserToken? tokenNext = null)
{
switch (tokenType)
{
case TextParserTokenType.Icon:
{
TextIconInfo icon;
if (!registeredIcons.TryGetValue(tokenText, out icon))
throw new InvalidOperationException(UltravioletStrings.UnrecognizedIcon.Format(tokenText));
return new Size2(icon.Width ?? icon.Icon.Controller.Width, icon.Height ?? icon.Icon.Controller.Height);
}
case TextParserTokenType.Text:
{
var size = font.MeasureString(tokenText);
if (tokenNext.HasValue)
{
var tokenNextValue = tokenNext.GetValueOrDefault();
if (tokenNextValue.TokenType == TextParserTokenType.Text && !tokenNextValue.Text.IsEmpty && !tokenNextValue.IsNewLine)
{
var charLast = tokenText[tokenText.Length - 1];
var charNext = tokenNextValue.Text[0];
var kerning = font.Kerning.Get(charLast, charNext);
return new Size2(size.Width + kerning, size.Height);
}
}
return size;
}
}
return Size2.Zero;
}
