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Posted: **Sat Oct 10, 2009 3:48 am**

I have a script that uses the scrollbar to change the size of text in a field and put the size and height of the text into two other fields.

Code: Select all

on scrollbardrag tValue
   put the textheight of field "field1" into field "textheight"
   put the textsize of field "field1"-1 into field "textsize"
   if  tValue =1 then set theTextSize of  field "Field1" to 9  
   else if tValue =2  then set the TextSize of  field "Field1" to 10
   else if tValue =3  then set the TextSize of  field "Field1" to 11
   else if tValue =4  then set the TextSize of  field "Field1" to 12
   else if tValue =5  then set the TextSize of  field "Field1" to 13
   else if tValue =6  then set the TextSize of  field "Field1" to 14
   else if tValue =7  then set the TextSize of  field "Field1" to 15
   else if tValue =8  then set the TextSize of  field "Field1" to 16
   else if tValue =9  then set the TextSize of  field "Field1" to 17
   else if tValue =10  then set the TextSize of  field "Field1" to 18
   else if tValue =11  then set the TextSize of  field "Field1" to 19
   else if tValue =12  then set the TextSize of  field "Field1" to 20
   else if tValue =13  then set the TextSize of  field "Field1" to 21
   else if tValue =14  then set the TextSize of  field "Field1" to 22
   else if tValue =15  then set the TextSize of  field "Field1" to 23
   else if tValue =16  then set the TextSize of  field "Field1" to 24
   else if tValue =17  then set the TextSize of  field "Field1" to 25
   else if tValue =18  then set the TextSize of  field "Field1" to 26
   else if tValue =19  then set the TextSize of  field "Field1" to 27
   else if tValue =20  then set the TextSize of  field "Field1" to 28
   else if tValue =21  then set the TextSize of  field "Field1" to 29
   else if tValue =21  then set the TextSize of  field "Field1" to 30
   else if tValue =23  then set the TextSize of  field "Field1" to 31
   else if tValue =24  then set the TextSize of  field "Field1" to 32
   else if tValue =25  then set the TextSize of  field "Field1" to 33
   else if tValue =26  then set the TextSize of  field "Field1" to 34
   else if tValue =27  then set the TextSize of  field "Field1" to 35
   else if tValue =28  then set the TextSize of  field "Field1" to 36
   else if tValue =29  then set the TextSize of  field "Field1" to 37
   else if tValue =30  then set the TextSize of  field "Field1" to 38
   else if tValue =31  then set the TextSize of  field "Field1" to 39
   else if tValue =32  then set the TextSize of  field "Field1" to 40
   else if tValue =33  then set the TextSize of  field "Field1" to 41
   else if tValue =34  then set the TextSize of  field "Field1" to 42
   else if tValue =35  then set the TextSize of  field "Field1" to 43
   else if tValue =36  then set the TextSize of  field "Field1" to 44
   
   else end if
   
end scrollbardrag

I'm sure this is not the way to do this but it seems to sort of work...

Can someone please tell me how would be the correct way to do this?

And can someone please explain why this script acts the way it does?
For instance, if you start sliding the scrollbar, sometimes the numbers in the field telling you how big the text is does not change but you can clearly see the text getting bigger....

Sometimes when you slide the scrollbar all the way back to the left it does not go to the lowest number in my script (9)?

http://screencast.com/t/EHJK55WwnW

Thanks!

Posted: **Sat Oct 10, 2009 5:34 am**

Wow - that's a lot of work to go through for that. If those are really the numbers you want, then try

Code: Select all

on scrollbardrag tValue
    put the textheight of field "field1" into field "textheight"
    put the textsize of field "field1"-1 into field "textsize"
    set the textsize of field "Field1" to tValue+8
end scrollbardrag

Posted: **Sat Oct 10, 2009 9:36 pm**

Wow. Thanks!

Talk about making something super simple. I had no idea it could be done that way.

It still seemed to do the weirdness with reporting the text size and height.

I ended up doing this and it seemed to fix it. I'd like to understand why?

Code: Select all

on scrollbardrag tValue
    
    put the textheight of field "field1" into field "textheight"
    
    put the textsize of field "field1"-1 into field "textsize"
    
    set the textsize of field "Field1" to tValue+8

    put the textheight of field "field1" into field "textheight"
    
    put the textsize of field "field1"-1 into field "textsize"
   

end scrollbardrag

Also I would have never known to do this. How did you know to do the value =8?

Thanks!

Posted: **Sat Oct 10, 2009 9:52 pm**

TodayIsTheDay,
if you mean by weirdness that texHeight and TexSize are not what you expect from the setting of the TextSize by the scrollbar then maybe this is before you set the textSize to the scrollbarValue you query the values.
So they are the values from your last setting. Try

Code: Select all

on scrollbardrag tValue 
   set the textsize of field "Field1" to tValue+8 
   put the textheight of field "field1" into field "textheight" 
   put the textsize of field "field1"-1 into field "textsize" 
end scrollbardrag

and it should work. If that is what you mean.
by the way what is the -1 for in "put the textsize of field "field1"-1 into field "textsize""?
regards
Bernd

Posted: **Sat Oct 10, 2009 10:04 pm**

What I meant was when you moved the scrollbar all the way back to the left, one time it might report text height as 8 the next time as 11 the next time as 10 even though you have the scrollbar all the way to the left.

I didn't understand why....

Does that make sense? Sometimes I can be confusing when I try to explain things.

the -1 was a mistake. I don't know what I was doing there...

Posted: **Sat Oct 10, 2009 10:07 pm**

The way you posted it worked perfectly. There was no need for me to have it at the beginning of the code and at the end.

I'm really new to coding and Rev. I'm just making all sorts of little test apps and trying code...

Thank you!

Posted: **Sat Oct 10, 2009 10:21 pm**

Well, the way I knew it was 8 was because that's what you were doing in your code. Nothing magical about the number 8, but you had

Code: Select all

if  tValue =1 then set theTextSize of  field "Field1" to 9

and then on down to

Code: Select all

if tValue =36  then set the TextSize of  field "Field1" to 44

so I just simplified it a bit. Fiddle with the value if you want and see what happens.

Posted: **Sat Oct 10, 2009 10:34 pm**

I think I way overthink this stuff sometimes... It was right in front of me and I didn't see it...

Thank you again.

Posted: **Sat Oct 10, 2009 11:27 pm**

I think I way overthink this stuff sometimes... It was right in front of me and I didn't see it...

Been there <g>. But there's nothing like having group input when you get stuck on things.

Posted: **Sun Oct 11, 2009 4:20 pm**

You can also set the startValue and endValue properties of the scrollbar to 8 and 74 respectively, and then you don't have to add 8 to the thumbPosition of the scrollbar to determine the textHeight.

HTH,

Jan Schenkel.

LiveCode Forums.

ScrollBar, text size and height

ScrollBar, text size and height