Thank you! Works great. > On Aug 16, 2018, at 3:50 AM, Håkan Liljegren via use-livecode > <use-livecode@lists.runrev.com> wrote: > > As the screenrect is the same but virtually larger / smaller based on the > scaleFactor you need calculate the scale factor based on the current > scaleFactor and the new scaleFactor > > Try this: > on changeScaleFactor pNewScale > put the scaleFactor of this stack into tScale > put tScale / pNewScale into tFactor > put the topLeft of this stack into tTL > multiply item 1 of tTL by tFactor > multiply item 2 of tTl by tFactor > set the scaleFactor of this stack to pNewScale > set the topLeft of this stack to tTL > end changeScaleFactor > > Of course you can substitute topLeft with something else if you want another > corner or the center to be the fix point. > > :-Håkan > On 16 Aug 2018, 01:11 +0200, Peter Bogdanoff via use-livecode > <use-livecode@lists.runrev.com>, wrote: >> I too am using scaleFactor and ran into this issue of the difficulty of >> windows moving around and even off screen. It seems that when scaleFactor is >> invoked the entire screen is now virtual and calculations have to be made to >> position the window where you want it to be visually. Unfortunately, those >> exact calculations were beyond me at the time I implemented scaleFactor, so >> my windows do still move somewhat. But if someone else has a method/formula >> for window placement I too would be interested. >> >> Peter Bogdanoff >> ArtsInteractive >> >> >>> On Aug 15, 2018, at 3:02 PM, Knapp Martin via use-livecode >>> <use-livecode@lists.runrev.com> wrote: >>> >>> I know that scaleFactor is not intended to be a "zoom view" feature for >>> desktop, but in lieu of actually having zoom views, I really need to use it >>> to allow the user to enlarge or reduce the window size for a Mac and >>> Windows app I’m working on. What I would like is for it to shrink or grow >>> from the topLeft point on the screen but I can't seem to figure out a way >>> to keep it from jumping around. I would like to have scaleFactors from .5 >>> to 1.5. Anybody tackled this one? >>> >>> Thanks, >>> Marty
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