/// <summary>
/// Calculates a layout for the specified text.
/// </summary>
/// <param name="input">The parsed text which will be laid out according to the specified settings.</param>
/// <param name="output">The layout command stream which will be populated with commands by this operation.</param>
/// <param name="settings">A <see cref="TextLayoutSettings"/> structure which contains the settings for this operation.</param>
public void CalculateLayout(TextParserTokenStream input, TextLayoutCommandStream output, TextLayoutSettings settings)
{
Contract.Require(input, nameof(input));
Contract.Require(output, nameof(output));
if (settings.Font == null)
{
throw new ArgumentException(UltravioletStrings.InvalidLayoutSettings);
}
var state = new LayoutState()
{
LineInfoCommandIndex = 1
};
output.Clear();
output.SourceText = input.SourceText;
output.ParserOptions = input.ParserOptions;
var acquiredPointers = !output.HasAcquiredPointers;
if (acquiredPointers)
{
output.AcquirePointers();
}
output.WriteBlockInfo();
output.WriteLineInfo();
var bold = (settings.Style == SpriteFontStyle.Bold || settings.Style == SpriteFontStyle.BoldItalic);
var italic = (settings.Style == SpriteFontStyle.Italic || settings.Style == SpriteFontStyle.BoldItalic);
if (settings.InitialLayoutStyle != null)
{
PrepareInitialStyle(output, ref bold, ref italic, ref settings);
}
var currentFont = settings.Font;
var currentFontFace = settings.Font.GetFace(SpriteFontStyle.Regular);
var index = 0;
var processing = true;
while (index < input.Count && processing)
{
if (state.PositionY >= (settings.Height ?? Int32.MaxValue))
{
break;
}
var token = input[index];
currentFontFace = default(SpriteFontFace);
currentFont = GetCurrentFont(ref settings, bold, italic, out currentFontFace);
switch (token.TokenType)
{
case TextParserTokenType.Text:
processing = ProcessTextToken(input, output, currentFontFace, ref token, ref state, ref settings, ref index);
break;
case TextParserTokenType.Icon:
processing = ProcessIconToken(output, ref token, ref state, ref settings, ref index);
break;
case TextParserTokenType.ToggleBold:
ProcessToggleBoldToken(output, ref bold, ref state, ref index);
break;
case TextParserTokenType.ToggleItalic:
ProcessToggleItalicToken(output, ref italic, ref state, ref index);
break;
case TextParserTokenType.PushFont:
ProcessPushFontToken(output, ref token, ref state, ref index);
break;
case TextParserTokenType.PushColor:
ProcessPushColorToken(output, ref token, ref state, ref index);
break;
case TextParserTokenType.PushStyle:
ProcessPushStyleToken(output, ref bold, ref italic, ref token, ref state, ref index);
break;
case TextParserTokenType.PushGlyphShader:
ProcessPushGlyphShaderToken(output, ref token, ref state, ref index);
break;
case TextParserTokenType.PushLink:
ProcessPushLinkToken(output, ref token, ref state, ref index);
break;
case TextParserTokenType.PopFont:
ProcessPopFontToken(output, ref token, ref state, ref index);
break;
case TextParserTokenType.PopColor:
ProcessPopColorToken(output, ref token, ref state, ref index);
break;
case TextParserTokenType.PopStyle:
ProcessPopStyleToken(output, ref bold, ref italic, ref token, ref state, ref index);
break;
case TextParserTokenType.PopGlyphShader:
ProcessPopGlyphShaderToken(output, ref token, ref state, ref index);
break;
case TextParserTokenType.PopLink:
ProcessPopLinkToken(output, ref token, ref state, ref index);
break;
default:
if (token.TokenType >= TextParserTokenType.Custom)
{
ProcessCustomCommandToken(output, ref token, ref state, ref index);
break;
}
else
{
throw new InvalidOperationException(UltravioletStrings.UnrecognizedLayoutCommand.Format(token.TokenType));
}
}
}
state.FinalizeLayout(output, ref settings);
if (acquiredPointers)
{
output.ReleasePointers();
}
ClearLayoutStacks();
}
/// <summary>
/// Calculates a layout for the specified text.
/// </summary>
/// <param name="input">The parsed text which will be laid out according to the specified settings.</param>
/// <param name="output">The layout command stream which will be populated with commands by this operation.</param>
/// <param name="settings">A <see cref="TextLayoutSettings"/> structure which contains the settings for this operation.</param>
public void CalculateLayout(TextParserTokenStream input, TextLayoutCommandStream output, TextLayoutSettings settings)
{
Contract.Require(input, "input");
Contract.Require(output, "output");
if (settings.Font == null)
throw new ArgumentException(UltravioletStrings.InvalidLayoutSettings);
var state = new LayoutState() { LineInfoCommandIndex = 1 };
output.Clear();
output.SourceText = input.SourceText;
output.ParserOptions = input.ParserOptions;
var acquiredPointers = !output.HasAcquiredPointers;
if (acquiredPointers)
output.AcquirePointers();
output.WriteBlockInfo();
output.WriteLineInfo();
var bold = (settings.Style == SpriteFontStyle.Bold || settings.Style == SpriteFontStyle.BoldItalic);
var italic = (settings.Style == SpriteFontStyle.Italic || settings.Style == SpriteFontStyle.BoldItalic);
if (settings.InitialLayoutStyle != null)
PrepareInitialStyle(output, ref bold, ref italic, ref settings);
var currentFont = settings.Font;
var currentFontFace = settings.Font.GetFace(SpriteFontStyle.Regular);
var index = 0;
var processing = true;
while (index < input.Count && processing)
{
if (state.PositionY >= (settings.Height ?? Int32.MaxValue))
break;
var token = input[index];
currentFontFace = default(SpriteFontFace);
currentFont = GetCurrentFont(ref settings, bold, italic, out currentFontFace);
switch (token.TokenType)
{
case TextParserTokenType.Text:
processing = ProcessTextToken(input, output, currentFontFace, ref token, ref state, ref settings, ref index);
break;
case TextParserTokenType.Icon:
processing = ProcessIconToken(output, ref token, ref state, ref settings, ref index);
break;
case TextParserTokenType.ToggleBold:
ProcessToggleBoldToken(output, ref bold, ref state, ref index);
break;
case TextParserTokenType.ToggleItalic:
ProcessToggleItalicToken(output, ref italic, ref state, ref index);
break;
case TextParserTokenType.PushFont:
ProcessPushFontToken(output, ref token, ref state, ref index);
break;
case TextParserTokenType.PushColor:
ProcessPushColorToken(output, ref token, ref state, ref index);
break;
case TextParserTokenType.PushStyle:
ProcessPushStyleToken(output, ref bold, ref italic, ref token, ref state, ref index);
break;
case TextParserTokenType.PushGlyphShader:
ProcessPushGlyphShaderToken(output, ref token, ref state, ref index);
break;
case TextParserTokenType.PopFont:
ProcessPopFontToken(output, ref token, ref state, ref index);
break;
case TextParserTokenType.PopColor:
ProcessPopColorToken(output, ref token, ref state, ref index);
break;
case TextParserTokenType.PopStyle:
ProcessPopStyleToken(output, ref bold, ref italic, ref token, ref state, ref index);
break;
case TextParserTokenType.PopGlyphShader:
ProcessPopGlyphShaderToken(output, ref token, ref state, ref index);
break;
default:
throw new InvalidOperationException(UltravioletStrings.UnrecognizedLayoutCommand.Format(token.TokenType));
}
}
state.FinalizeLayout(output, ref settings);
if (acquiredPointers)
output.ReleasePointers();
ClearLayoutStacks();
}
