Hi Dark Vortex,

Advantage of as3 is you can set your own rules. Create a dynamic textfield and give it a certain height.

create a if statement that controls whether or not to load a scrollbar.

Our main script for scrolling can be found on the following site: http://www.hexluv.com/2009/04/…..bar-class/

This is a fully customizable scrollbar with automatic determination if scroll bar is needed.

Saves you alot of time to accomplish other work.

Happy coding!

Post edited 1:26 am – February 6, 2010 by Inter-Reality
Post edited 1:28 am – February 6, 2010 by Inter-Reality

---

Dark Vortex,

your solution:

on your main stage:

1. create a scrollbar movieclip and give it an instance name of dtf_scroller
2. set the registration of all the scrollbar elements to top left.
3. in the scrollbar movieclip you may want to create some elements but the formost is the slider. (to make things pretty you may want to add a scrollbar and an up and down button but for this explanation its the raw deal.)
4. give your slider an instancename of slider_mc.
5. create a dynamic textfield and give this an instance name of : dtf (dynamic text field).
6. add a new layer on the timeline in your main stage. rename the layer to AS
7. add the following script to the timeline:

//dynamic scroll visibilty test
//author: Inter-Reality.nl
var maxH:Number = 260;
//dtf definitions
var myFormat:TextFormat = new TextFormat();
myFormat.font = “Arial”;
myFormat.color = 0×333333;
myFormat.size = 24;

dtf.wordWrap = true;
dtf.multiline = true;
dtf.setTextFormat(myFormat);
dtf.height = maxH;

dtf.text = “all dynamic text goes here…”;

//if you fill this up till the text surpases your dtf.height the scrollbar will appear

dtf_scroller.visible = dtf.maxScrollV > 1;
dtf.addEventListener(Event.CHANGE, function():void{
dtf_scroller.visible = dtf.maxScrollV > 1;
});

stage.addEventListener(Event.ENTER_FRAME, checkSlider);
//dtf_scroller.scrollUP_mc.addEventListener(MouseEvent.CLICK, upScroll);
//dtf_scroller.scrollDown_mc.addEventListener(MouseEvent.CLICK, downScroll);
dtf_scroller.slider_mc.addEventListener(MouseEvent.MOUSE_DOWN, dragSlider);
stage.addEventListener(MouseEvent.MOUSE_UP, dropSlider);

function upScroll(event:MouseEvent):void
{
    trace(dtf.scrollV);
    dtf.scrollV -= 1;
}

function downScroll(event:MouseEvent):void
{
    trace(dtf.scrollV);
    dtf.scrollV += 1;
}

var bounds:Rectangle = new Rectangle(dtf_scroller.slider_mc.x, dtf_scroller.slider_mc.y,0,maxH);
var dragging:Boolean = false;
function dragSlider(event:MouseEvent):void
{
    dtf_scroller.slider_mc.startDrag(false,bounds);
    dragging = true;
}
function dropSlider(event:MouseEvent):void
{
    dtf_scroller.slider_mc.stopDrag();
    dragging = false;
}
function checkSlider(event:Event):void
{
    //if(dragging){trace(“scroll”);}
    dtf.scrollV = Math.round ((dtf_scroller.slider_mc.y – bounds.y)* dtf.maxScrollV/70);
}

function textScrolled(event:Event):void
{
    dtf_scroller.slider_mc.y = bounds.y + (dtf.scrollV * 70/dtf.maxScrollV);
}
dtf.addEventListener(Event.SCROLL, textScrolled);

To mention: this is a script that doesn't fail. I just tested it and its a dirty way of making a scrollbar visible or non visible.

Let me know if you can work with this…

oh yeah! to spice it up you could chose to use tween elements for positioning…gives a nice effect…

Happy coding!

[adjustment]

added a zip file dtf.zip