Hi Ken:
The following function does what you propose using a transitional image and
gets pretty close. It requires the long id of the target field, and only
works on transparent fields. You'd have to add additional code to convert
the non-text portion of the field to alphaData, or temporarily convert the
field to transparent and restore after capturing the text rect.
function tmTextRect pField
lock screen
## CREATE IMAGE WITH ALPHADATA
reset the templateImage
set lineSize of the templateImage to 0
create image
put long id of it into tempImage
do "export snapshot from" && pField && "to" && tempImage && "as PNG"
put alphadata of tempImage into theAlphaData
## DEFINE GRID
put width of tempImage into theColumnCount
delete tempImage
reset the templateImage
unlock screen
## LOOP THROUGH ALPHA DATA LOOKING FOR
## PIXELS THAT MEET VISIBILITY THRESHOLD (> 5)
put 1 into theRowNum
put 0 into theColumnNum
put 0,0,0,0 into theRect
repeat for each char theByte in theAlphaData
add 1 to theColumnNum
put charToNum(theByte) into theValue
if theValue > 5 then
if item 1 of theRect is 0 then
put theColumnNum into item 1 of theRect
put theRowNum into item 2 of theRect
put theColumnNum into item 3 of theRect
put theRowNum into item 4 of theRect
end if
put min(theColumnNum, item 1 of theRect) into item 1 of theRect
put min(theRowNum, item 2 of theRect) into item 2 of theRect
put max(theColumnNum, item 3 of theRect) into item 3 of theRect
put max(theRowNum, item 4 of theRect) into item 4 of theRect
end if
if theColumnNum = theColumnCount then
add 1 to theRowNum
put 0 into theColumnNum
end if
end repeat
add left of pField to item 1 of theRect
add left of pField to item 3 of theRect
add top of pField to item 2 of theRect
add top of pField to item 4 of theRect
return theRect
end tmTextRect
Regards,
Scott Rossi
Creative Director
Tactile Media, UX Design
Recently, Ken Corey wrote:
> On 06/02/2012 03:30, Howard Bornstein wrote:
>> I need to find the smallest rectangle that will enclose a line of text of
>> arbitrary text size in a field. I thought I could use formattedheight and
>> formattedwidth to do this but it doesn't seem to be working.
>
> I'm very perplexed too.
>
> Instead of worrying about what is/is not added to the text image, fonts,
> screen smoothing, margins, whatever (itis bound to have a
> platform-specific element to it), I figured "Why not just ask the bits?"
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