ACTIONSCRIPT 3 Developer’s Guide en

ACTIONSCRIPT 3.0 DEVELOPER’S GUIDE
Using the Flash Text Engine
Justifying text
Flash Player 10 and later, Adobe AIR 1.5 and later
Justifying text makes all lines in a paragraph the same length by adjusting the spacing between words and sometimes
between letters. The effect is to align the text on both sides, while the spacing between words and letters varies.
Columns of text in newspapers and magazines are frequently justified.
The lineJustfication property in the SpaceJustifier class allows you to control the justification of lines in a block
of text. The LineJustification class defines constants that you can use to specify a justification option: ALL_BUT_LAST
justifies all but the last line of text; ALL_INCLUDING_LAST justifies all text, including the last line; UNJUSTIFIED, which
is the default, leaves the text unjustified.
To justify text, set the lineJustification property to an instance of the SpaceJustifier class and assign that instance
to the textJustifier property of a TextBlock instance. The following example creates a paragraph in which all but
the last line of text is justified.
package
{
import flash.text.engine.*;
import flash.display.Sprite;
public class JustifyExample extends Sprite
{
public function JustifyExample()
{
var str:String = "Lorem ipsum dolor sit amet, consectetur adipisicing elit, " +
"sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut " +
"enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut " +
"aliquip ex ea commodo consequat.";
var format:ElementFormat = new ElementFormat();
var textElement:TextElement=new TextElement(str,format);
var spaceJustifier:SpaceJustifier=new
SpaceJustifier("en",LineJustification.ALL_BUT_LAST);
}
}
}
var textBlock:TextBlock = new TextBlock();
textBlock.content=textElement;
textBlock.textJustifier=spaceJustifier;
createLines(textBlock);
private function createLines(textBlock:TextBlock):void {
var yPos=20;
var textLine:TextLine=textBlock.createTextLine(null,150);
}
while (textLine) {
addChild(textLine);
textLine.x=15;
yPos+=textLine.textHeight+2;
textLine.y=yPos;
textLine=textBlock.createTextLine(textLine,150);
}
Last updated 6/6/2012
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