Panel:GetNumLines
Description
Returns the number of lines in a RichText. You must wait a couple frames before calling this after using Panel:AppendText or Panel:SetText, otherwise it will return the number of text lines before the text change.
Even though this function can be called on any panel, it will only work with RichText
Returns
Example
Creates a rich text panel with a block of text and prints out the number of text lines before and after PerformLayout is called.
-- Create a window frame
TextFrame = vgui.Create("DFrame")
TextFrame:SetSize(200, 224)
TextFrame:Center()
TextFrame:SetTitle("Generic Frame")
-- RichText panel
local richtext = vgui.Create("RichText", TextFrame)
richtext:Dock(FILL)
-- Throw some text in the panel
richtext:SetText("This is a block of text demonstrating how line wrapping and panel size relates to the number of lines shown inside of a RichText panel.")
-- Keep track of PerformLayout calls
richtext.layoutCount = 0
-- Custom function for this example
function richtext:NumLinesExample()
print("PerformLayout called "..self.layoutCount.." times: "..richtext:GetNumLines().." line(s) returned")
end
-- Print # of lines before any layouts
richtext:NumLinesExample()
-- Render update
function richtext:PerformLayout()
self.layoutCount = self.layoutCount + 1
self:NumLinesExample() -- Print current # of lines
end
Output: The panel shows 5 lines of text, but the number 5 isn't returned until PerformLayout has been called 2 times.
PerformLayout called 0 times: 1 line(s) returned
PerformLayout called 1 times: 1 line(s) returned
PerformLayout called 2 times: 5 line(s) returned
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