|
public static ExtractLineBreaks ( List |
||
| words | List |
|
| return | List |
|
/// <summary>
/// Computes drawing commands to layout a block of text within
/// certain constraints
/// </summary>
/// <returns></returns>
public static TextRendererResult ComputeText(string text, TextRendererOptions options, UIElement target)
{
var TextStyle = options.TextStyle;
var _Scale = options.Scale;
var txtScale = TextStyle.Scale * _Scale;
var m_LineHeight = TextStyle.MeasureString("W").Y - (2 * txtScale.Y);
var spaceWidth = TextStyle.MeasureString(" ").X;
var words = text.Split(' ').ToList();
var newWordsArray = TextRenderer.ExtractLineBreaks(words);
var m_Lines = new List <UITextEditLine>();
TextRenderer.CalculateLines(m_Lines, newWordsArray, TextStyle, options.MaxWidth, spaceWidth, options.TopLeftIconSpace, m_LineHeight);
var topLeft = options.Position;
var position = topLeft;
var result = new TextRendererResult();
var drawCommands = new List <ITextDrawCmd>();
result.DrawingCommands = drawCommands;
var yPosition = topLeft.Y;
var numLinesAdded = 0;
var realMaxWidth = 0;
for (var i = 0; i < m_Lines.Count; i++)
{
var lineOffset = (i * m_LineHeight < options.TopLeftIconSpace.Y) ? options.TopLeftIconSpace.X : 0;
var line = m_Lines[i];
var xPosition = topLeft.X + lineOffset;
if (line.LineWidth > realMaxWidth)
{
realMaxWidth = (int)line.LineWidth;
}
/** Alignment **/
if (options.Alignment == TextAlignment.Center)
{
xPosition += (int)Math.Round(((options.MaxWidth - lineOffset) - line.LineWidth) / 2);
}
var segmentPosition = target.LocalPoint(new Vector2(xPosition, yPosition));
drawCommands.Add(new TextDrawCmd_Text
{
Selected = false,
Text = line.Text,
Style = TextStyle,
Position = segmentPosition,
Scale = txtScale
});
numLinesAdded++;
yPosition += m_LineHeight;
position.Y += m_LineHeight;
}
result.BoundingBox = new Rectangle((int)topLeft.X, (int)topLeft.Y, (int)options.MaxWidth, (int)(yPosition - m_LineHeight));
result.MaxWidth = realMaxWidth;
foreach (var cmd in drawCommands)
{
cmd.Init();
}
return(result);
}
/// <summary>
/// Computes drawing commands to layout a block of text within
/// certain constraints
/// </summary>
/// <returns></returns>
public static TextRendererResult ComputeText(string text, TextRendererOptions options, UIElement target)
{
var TextStyle = options.TextStyle;
var _Scale = options.Scale;
var txtScale = TextStyle.Scale * _Scale;
var m_LineHeight = TextStyle.MeasureString("W").Y - (2 * txtScale.Y);
var spaceWidth = TextStyle.MeasureString(" ").X;
text = text.Replace("\r", "");
var bbCommands = new List <BBCodeCommand>();
if (options.BBCode)
{
var parsed = new BBCodeParser(text);
text = parsed.Stripped;
bbCommands = parsed.Commands;
}
var words = text.Split(' ').ToList();
var newWordsArray = TextRenderer.ExtractLineBreaks(words);
var m_Lines = new List <UITextEditLine>();
TextRenderer.CalculateLines(m_Lines, newWordsArray, TextStyle, options.MaxWidth, spaceWidth, options.TopLeftIconSpace, m_LineHeight);
var topLeft = options.Position;
var position = topLeft;
var result = new TextRendererResult();
var drawCommands = new List <ITextDrawCmd>();
result.DrawingCommands = drawCommands;
var yPosition = topLeft.Y;
var numLinesAdded = 0;
var realMaxWidth = 0;
var bbIndex = 0;
var bbColorStack = new Stack <Color>();
var lastColor = TextStyle.Color;
var shadowApplied = false;
for (var i = 0; i < m_Lines.Count; i++)
{
var lineOffset = (i * m_LineHeight < options.TopLeftIconSpace.Y) ? options.TopLeftIconSpace.X : 0;
var line = m_Lines[i];
var segments = CalculateSegments(line, bbCommands, ref bbIndex);
var xPosition = topLeft.X + lineOffset;
segments.ForEach(x => x.Size = TextStyle.MeasureString(x.Text));
var thisLineWidth = segments.Sum(x => x.Size.X);
if (thisLineWidth > realMaxWidth)
{
realMaxWidth = (int)thisLineWidth;
}
/** Alignment **/
if (options.Alignment == TextAlignment.Center)
{
xPosition += (int)Math.Round(((options.MaxWidth - lineOffset) - thisLineWidth) / 2);
}
foreach (var segment in segments)
{
var segmentSize = segment.Size;
var segmentPosition = target.LocalPoint(new Vector2(xPosition, yPosition));
if (segment.Text.Length > 0)
{
drawCommands.Add(new TextDrawCmd_Text
{
Selected = segment.Selected,
Text = segment.Text,
Style = TextStyle,
Position = segmentPosition,
Scale = txtScale
});
xPosition += segmentSize.X;
}
if (segment.StartCommand != null)
{
var cmd = segment.StartCommand;
switch (cmd.Type)
{
case BBCodeCommandType.color:
if (cmd.Close)
{
//pop a color off our stack
if (bbColorStack.Count > 0)
{
lastColor = bbColorStack.Pop();
drawCommands.Add(new TextDrawCmd_Color(TextStyle, lastColor));
}
}
else
{
bbColorStack.Push(lastColor);
lastColor = cmd.ParseColor();
drawCommands.Add(new TextDrawCmd_Color(TextStyle, lastColor));
}
break;
case BBCodeCommandType.s:
if (cmd.Close)
{
drawCommands.Add(new TextDrawCmd_Shadow(TextStyle, false));
shadowApplied = false;
}
else
{
drawCommands.Add(new TextDrawCmd_Shadow(TextStyle, true));
shadowApplied = true;
}
break;
case BBCodeCommandType.emoji:
if (segment.BBCatchup)
{
break;
}
drawCommands.Add(new TextDrawCmd_Emoji(TextStyle, cmd.Parameter, target.LocalPoint(new Vector2(xPosition, yPosition)), _Scale));
break;
}
}
}
/*
* var segmentPosition = target.LocalPoint(new Vector2(xPosition, yPosition));
* drawCommands.Add(new TextDrawCmd_Text
* {
* Selected = false,
* Text = line.Text,
* Style = TextStyle,
* Position = segmentPosition,
* Scale = txtScale
* });
*/
numLinesAdded++;
yPosition += m_LineHeight;
position.Y += m_LineHeight;
}
if (shadowApplied)
{
drawCommands.Add(new TextDrawCmd_Shadow(TextStyle, false));
}
while (bbColorStack.Count > 0)
{
lastColor = bbColorStack.Pop();
drawCommands.Add(new TextDrawCmd_Color(TextStyle, lastColor));
}
result.BoundingBox = new Rectangle((int)topLeft.X, (int)topLeft.Y, (int)options.MaxWidth, (int)(yPosition - (m_LineHeight + topLeft.Y)));
result.MaxWidth = realMaxWidth;
foreach (var cmd in drawCommands)
{
cmd.Init();
}
return(result);
}