Scrolling to a clicked line when dontwrap=false

Peter M. Brigham, MD pmbrig at gmail.com
Sat Aug 27 08:25:38 EDT 2011


On Aug 27, 2011, at 5:11 AM, Tim Selander wrote:

> I have a field full of (locked) text (a TV script), lines are wrapped. I want to be able to click a word in the text and automatically set the scroll of the field so that the line with the clicked word is at the very top of the field.
> 
> I can set the vscroll of the field using the number returned by (the clickline)*(the textheight) of the field. But, each wrapped line in the text above the click throws that calculation off...
> 
> How can I take the wrapped lines into consideration so that the text my users click pops to the top of the field?

Just tested it: two revisions. If the textheight of the field is empty then the original handler won't work, so use "the effective textheight of me." Also, correct for the borderwidth of the field:

on mouseup
  put word 2 of of the clickCharChunk into chNbr
   put the number of words of char 1 to chNbr of me \
          into wordNbr
   put the formattedheight of word 1 to wordNbr of me \
          into upToHere
   put the effective textheight of me into txtHt
   put upToHere - txtHt + (the effective borderwidth of me) \
          into upToHere
   set the scroll of me to upToHere
   -- so the line remains visible
end mouseup

-- Peter

Peter M. Brigham
pmbrig at gmail.com
http://home.comcast.net/~pmbrig





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