public MultilineString(string text, Rectangle rect, TextAlignment alignment, BitmapFontGroup font,
List <MultilineFragment> cachedLines, Color color, bool degrading)
{
this.CachedLines = cachedLines;
this.text = text;
rectangle = rect;
textAlignment = alignment;
this.font = font;
this.color = color;
this.degrading = degrading;
}
/// <summary>
/// Draws a multiline text using the Primitives spritebatch.
/// </summary>
/// <param name="text">Text to be drawn.</param>
/// <param name="rectangle">The rectangle bounding the text.</param>
/// <param name="color">Text color.</param>
/// <param name="font">Text font (Verdana 14, if null).</param>
/// <param name="degrading"></param>
/// <param name="alignment">Text alignment.</param>
public static void DrawString(string text,
Rectangle rectangle,
Color?color = null,
BitmapFontGroup font = null,
TextAlignment alignment = TextAlignment.TopLeft,
bool degrading = false)
{
// TODO complete degrading
Color baseColor = color ?? Color.Black;
BitmapFontGroup baseFont = font ?? BitmapFontGroup.DefaultFont;
MultilineString ms = new MultilineString(text, rectangle, alignment, baseFont, null, baseColor, degrading);
MultilineString msCache = MultilineStringCache.GetValueOrDefault(ms, null);
if (msCache != null)
{
foreach (MultilineFragment line in msCache.CachedLines)
{
if (line.Icon != null)
{
SpriteBatch.Draw(line.Icon,
new Rectangle(rectangle.X + (int)line.PositionOffset.X,
rectangle.Y + (int)line.PositionOffset.Y,
line.IconWidth, line.IconWidth), Color.White);
}
else
{
SpriteBatch.DrawString(line.Font,
line.Text,
new Vector2(rectangle.X + (int)line.PositionOffset.X,
rectangle.Y + (int)line.PositionOffset.Y),
line.Color);
}
}
return;
}
Rectangle rrr;
SetupNewMultilineString(baseFont, text, rectangle, baseColor, alignment, out rrr, out List <MultilineFragment> cachedLines, degrading);
var multilineString = new MultilineString(text, rectangle, alignment, baseFont, cachedLines, baseColor, degrading);
MultilineStringCache.Add(multilineString, multilineString);
DrawString(text, rectangle, baseColor, baseFont, alignment);
}
public BitmapFontGroup(BitmapFont regular, BitmapFont italics, BitmapFont bold, BitmapFont boldItalics, BitmapFontGroup degradesTo = null)
{
DegradesTo = degradesTo;
Regular = regular; Italics = italics; Bold = bold; BoldItalics = boldItalics;
}
/// <summary>
/// If the text were written to the specified rectangle, how much width and height would it actually use?
/// This method ignores the rectangle's X and Y properties.
/// </summary>
/// <param name="text">Text to draw.</param>
/// <param name="rectangle">Rectangle bounding the text.</param>
/// <param name="font">Font to use.</param>
public static Rectangle GetMultiLineTextBounds(string text, Rectangle rectangle, BitmapFontGroup font = null)
{
Rectangle bounds;
List <MultilineFragment> _;
SetupNewMultilineString(font ?? BitmapFontGroup.DefaultFont, text, rectangle, Color.Black, TextAlignment.TopLeft, out bounds, out _, false);
return(bounds);
}
/// <summary>
/// Draws a multi-string.
/// WARNING! This grows more CPU-intensive as the number of words grow (only if word wrap enabled). It is recommended to use the DrawMultiLineText method instead - it uses caching.
/// </summary>
/// <param name="fnt">A reference to a SpriteFont object.</param>
/// <param name="text">The text to be drawn. <remarks>If the text contains \n it
/// will be treated as a new line marker and the text will drawn acordingy.</remarks></param>
/// <param name="r">The screen rectangle that the rext should be drawn inside of.</param>
/// <param name="col">The color of the text that will be drawn.</param>
/// <param name="align">Specified the alignment within the specified screen rectangle.</param>
/// <param name="textBounds">Returns a rectangle representing the size of the bouds of
/// the text that was drawn.</param>
/// <param name="cachedLines">This parameter is internal. Do not use it, merely throw away the variable.</param>
private static void SetupNewMultilineString(BitmapFontGroup fnt, string text, Rectangle r,
Color col, TextAlignment align, out Rectangle textBounds, out List <MultilineFragment> cachedLines, bool degrading)
{
textBounds = r;
if (text == string.Empty)
{
cachedLines = new List <MultilineFragment>();
return;
}
Data d = new Data();
d.FontGroup = fnt;
d.ReadyFragment = new StringBuilder();
d.Builder = new StringBuilder();
d.CurrentFont = d.FontGroup.Regular;
d.CurrentX = 0;
d.CurrentY = 0;
d.TotalNumberOfLines = 0;
d.Width = r.Width;
d.Height = r.Height;
d.IsBold = false;
d.IsItalics = false;
d.LineHeight = d.FontGroup.Regular.LineHeight;
d.Color = col;
d.End = false;
d.Lines = new List <List <MultilineFragment> >();
d.ThisLine = new List <MultilineFragment>();
if (d.Height >= d.LineHeight)
{
foreach (char t in text)
{
if (t == '{')
{
// Flush and write.
FlushAndWrite(d);
// Ready to change mode.
}
else if (t == '}')
{
// Change mode.
switch (d.Builder.ToString())
{
case "b":
d.IsBold = !d.IsBold;
d.UpdateFont();
break;
case "i":
d.IsItalics = !d.IsItalics;
d.UpdateFont();
break;
case "/b":
d.IsBold = !d.IsBold;
d.UpdateFont();
break;
case "/i":
d.IsItalics = !d.IsItalics;
d.UpdateFont();
break;
default:
string tag = d.Builder.ToString();
if (tag.StartsWith("icon:"))
{
Texture2D icon = Library.Icons[tag.Substring(5)];
d.Builder.Clear();
// Now add icon.
int iconwidth = d.LineHeight;
int remainingSpace = (int)(d.Width - d.CurrentX);
if (remainingSpace > iconwidth + 3)
{
d.ThisLine.Add(new MultilineFragment(icon,
new Vector2(d.CurrentX, d.CurrentY), iconwidth));
d.CurrentX += iconwidth + 3;
}
else
{
FlushAndWrite(d);
GoToNextLine(d);
d.ThisLine.Add(new MultilineFragment(icon,
new Vector2(d.CurrentX, d.CurrentY), iconwidth));
d.CurrentX += iconwidth + 3;
}
break;
}
else if (tag[0] == '/')
{
d.Color = col;
}
else
{
d.Color = ColorFromString(tag);
}
break;
}
d.Builder.Clear();
}
else if (t == ' ')
{
// Flush.
// Add builder to ready.
string without = d.ReadyFragment.ToString();
d.ReadyFragment.Append(d.Builder);
if (d.CurrentFont.MeasureString(d.ReadyFragment.ToString()).Width <= d.Width - d.CurrentX)
{
// It will fit.
d.ReadyFragment.Append(' ');
d.Builder.Clear();
}
else
{
// It would not fit.
d.ReadyFragment = new StringBuilder(without);
string newone = d.Builder.ToString();
d.Builder = new StringBuilder();
FlushAndWrite(d, true);
if (!d.End)
{
d.Builder.Append(newone);
FlushAndWrite(d);
d.Builder.Clear();
d.Builder.Append(' ');
}
}
// Write if overflowing.
}
else if (t == '\n')
{
// Flush and write.
FlushAndWrite(d);
// Skip to new line automatically.
GoToNextLine(d);
}
else
{
d.Builder.Append(t);
}
if (d.End)
{
break;
}
}
// Flush and write.
FlushAndWrite(d);
if (d.ThisLine.Count > 0)
{
FinishLine(d);
d.TotalNumberOfLines += 1;
}
}
if (d.End && degrading && fnt.DegradesTo != null)
{
SetupNewMultilineString(fnt.DegradesTo, text, r, col, align, out textBounds, out cachedLines, degrading);
return;
}
// Output.
textBounds = new Rectangle(r.X, r.Y, (int)d.Maximumwidthencountered, d.TotalNumberOfLines * d.LineHeight);
int yoffset = 0;
switch (align)
{
case TextAlignment.TopLeft:
case TextAlignment.Top:
case TextAlignment.TopRight:
break;
case TextAlignment.Bottom:
case TextAlignment.BottomLeft:
case TextAlignment.BottomRight:
yoffset = r.Height - d.TotalNumberOfLines * d.LineHeight;
break;
case TextAlignment.Middle:
case TextAlignment.Left:
case TextAlignment.Right:
yoffset = (r.Height - (d.TotalNumberOfLines * d.LineHeight)) / 2;
break;
}
cachedLines = new List <MultilineFragment>();
foreach (var line in d.Lines)
{
foreach (var fragment in line)
{
if (fragment.Text == "")
{
continue;
}
float xoffset = 0;
float lineWidth = line.Sum(frg => frg.Width);
switch (align)
{
case TextAlignment.Right:
case TextAlignment.TopRight:
case TextAlignment.BottomRight:
xoffset = r.Width - lineWidth;
break;
case TextAlignment.Middle:
case TextAlignment.Top:
case TextAlignment.Bottom:
xoffset = (r.Width - lineWidth) / 2;
break;
}
fragment.PositionOffset += new Vector2(xoffset, yoffset);
fragment.PositionOffset = new Vector2((int)fragment.PositionOffset.X, (int)fragment.PositionOffset.Y);
cachedLines.Add(fragment);
}
}
}
