Difference between revisions of "D2Editor:setExpression"

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__NOTOC__
 
__NOTOC__
 
 
 
D2Editor:'''setExpression''' is a function that is part of the D2Editor Library.  
 
D2Editor:'''setExpression''' is a function that is part of the D2Editor Library.  
 
<br>
 
  
 
This function sets the contents of a D2Editor, and is a synonym of setText.
 
This function sets the contents of a D2Editor, and is a synonym of setText.
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<source lang="lua" highlight=9>
 
<source lang="lua" highlight=9>
function on.create()
+
function on.construction() -- or on.create if OS 3.1
 
editor = D2Editor.newRichText()
 
editor = D2Editor.newRichText()
 
editor:move(0,0)
 
editor:move(0,0)
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== See also  ==
 
== See also  ==
 +
<categorytree mode=pages>D2Editor</categorytree>
  
*[[D2Editor.getExpression]]()&nbsp;:
 
*[[D2Editor.getExpressionSelection]]()&nbsp;:
 
*[[D2Editor.isVisible]]()&nbsp;:
 
*[[D2Editor.newRichText]]()&nbsp;:
 
*[[D2Editor.resize]]()&nbsp;:
 
*[[D2Editor.move]]()&nbsp;:
 
*[[D2Editor.setFocus]]()&nbsp;:
 
*[[D2Editor.setFontSize]]()&nbsp;:
 
*[[D2Editor.setFormattedText]]()&nbsp;:
 
*[[D2Editor.setMainFont]]()&nbsp;:
 
*[[D2Editor.setReadOnly]]()&nbsp;:
 
  
 
[[Category:D2Editor]]
 
[[Category:D2Editor]]

Latest revision as of 17:47, 18 June 2012

D2Editor:setExpression is a function that is part of the D2Editor Library.

This function sets the contents of a D2Editor, and is a synonym of setText.

Syntax

D2Editor:setExpression(text, [cursor], [selection])
Sets the content to text, or appends it to a certain position if cursor is set. If selection is -1, no text is selected (?).

Example

function on.construction() -- or on.create if OS 3.1
	editor = D2Editor.newRichText()
	editor:move(0,0)
	editor:resize(200,100)
end

function on.charIn(char)
	currentText = editor:getExpression() -- or editor:getText()
	editor:setExpression(currentText .. char) -- or editor:setText(...)
	--Add char to the editor
end

function on.enterKey()
	on.charIn(string.char(10))
	--Add a new line
end

A very simple text editor (its actually more complicated, but it shows the basics).

Tips & Tricks

In order to insert some special template like MathBoxes, vectors shapes, angles etc., you have to put these in the setExpression argument :

  • \\1angle : The text rendered inside is will be displayed under the "angle" shape
  • \\1circle : Symbol for circle
  • \\1keyword :
  • \\1line : Symbol for line (parenthesis)
  • \\1lineseg : Symbol for line segment
  • \\1ray :
  • \\1rtri :
  • \\1subhead :
  • \\1subscrp : Subscript text
  • \\1supersc : Superscript text
  • \\1title :
  • \\1tri : Triangle symbol
  • \\1vector : The text rendered inside is will be displayed under the vector arrow.
  • \\1word :
  • \\0el {content} : Inserts a MathBox with the content inside it.

For example, editor:setExpression("\\1vector AB") will render as : http://i.imgur.com/aqVd8.jpg

See also

<categorytree mode=pages>D2Editor</categorytree>