Looking for more info on hScroll
• From: Trevor DeVore
• Subject: Looking for more info on hScroll
• Date: Fri, 30 Jul 2004 17:28:16 -0700Hi,
Hello there list,
I need to determine the percentage of the scroll of a group based on the current hScroll. I am scaling graphics in a group (thus changing the formattedWidth) and need to set the hScroll to the value that will keep the same objects centered in the viewable area of the group after the scaling is done. I've done some tests but can't figure out how to make all of my numbers match up to get a correct percentage. Here is an example -
* I have a group with a formattedWidth of 1033 pixels.
* During testing the highest hScroll value when scrolling this group to the right is 630.
* The width of the group is 397 pixels so the formattedWidth of the group - the actual width of the group is 636 pixels.
* The borderWidth = 2, scrollbarWidth = 0 and margins = 0
I don't know where the 6 pixel difference comes from. In tests with the groups formattedWidth set to other values the difference has ranged anywhere between 4 and 8 pixels.
Are the margins of the group still set to another value than 0?
They are by default set to 4 (and the showborder true also adds to the width of a group).
Now you may be thinking to yourself "What is the big deal with 4 to 8 pixels? That probably won't affect your calculations that much." but I hate not understanding why something isn't working and I will have a miserable weekend if I don't find the answer ;-)
So does anybody know how to calculate a groups max hScroll based on its formattedWidth, width and other properties?
Thanks,
-- Trevor DeVore Blue Mango Multimedia
HTH. Greetings, WA
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