The API is no longer being updated here until further notice.

FontString provides three methods to determine the width of its text independently from the value returned by Region:GetWidth:

• GetStringWidth() ignores word wrap but includes truncation
• GetUnboundedStringWidth() ignores word wrap and truncation
• GetWrappedWidth() includes word wrap and truncation

         stringWidth = fontString:GetStringWidth()
unboundedStringWidth = fontString:GetUnboundedStringWidth()
        wrappedWidth = fontString:GetWrappedWidth()

Returns

stringWidth

Number - The minimum width necessary to contain the currently-displayed, possibly-truncated, text on a single line if WordWrap became forbidden; e.g. the width if word-wrapped lines were strung end-to-end

unboundedStringWidth

Number - The minimum width necessary to contain the entire text without truncation if WordWrap became forbidden; e.g. the width if ignoring any fixed anchor points or width

wrappedWidth

Number - The minimum width necessary to contain the currently-displayed text without changing its shape; e.g. the width of the widest line after applying word wrap and truncation

Notes

• By default, a FontString expands and shrinks to fit its text.
  • Region:GetWidth() returns the width that the FontString has dynamically adopted
  • width = wrappedWidth = stringWidth = unboundedStringWidth
• Conversly, a FontString may have explicitly defined width using Region:SetPoint() or Region:SetWidth; shorter texts fit inside and longer ones must wrap or truncate.
  • Region:GetWidth() will return the explicitly defined width
  • wrappedWidth <= width because GetWrappedWidth() only ever describes a single line (either the whole text or the biggest line that could fit)
  • However, GetStringWidth() and GetUnboundedStringWidth() reflect wrapping and truncation:
    • If the text fits on one line, stringWidth = unboundedStringWidth <= width
    • If the text fits on multiple lines, width < stringWidth = unboundedWidth
    • If the text cannot wrap and must truncate, stringWidth <= width < unboundedWidth
    • If the text wraps but truncates after multiple lines, width < stringWidth < unboundedWidth
• Notwithstanding, a text with manual line breaks (such as the |n escape sequence) could have a smaller width
  • Manually broken lines are not strung end-to-end when calculating GetStringWidth() or GetUnboundedStringWidth()
  • In other words, a manually broken text does not need its FontString to be as wide (but it does need more height)

See also

• FontString:IsTruncated()
• FontString:CanWordWrap()
• FontString:GetNumLines()
• FontString:GetStringHeight()