No, I mean like zooming a window. I think the problem lies in how I tell the TiledCanvas that one of its children is the zoomed one (setting "visible" of all the others to false in updateDisplayList). Stay tuned.
However, setting that aside, it also seems as though I might be commiting a hack if I allow the measured size of the TiledCanvas to remain larger than its bounds, even though it allows the scrolling to work (at least in the all-tiles-shown case). On Thu, Jun 5, 2008 at 5:46 PM, Josh McDonald <[EMAIL PROTECTED]> wrote: > I'm not sure exactly what you're doing, or what you're trying to achieve > yet. By "expanding a tile" do you mean you're setting the minimum to be > bigger, or you're manually overriding the decisions the base Container > implementation makes in updateDisplayList()? > > On Fri, Jun 6, 2008 at 10:41 AM, Richard Rodseth <[EMAIL PROTECTED]> wrote: >> >> The docs say: >> >> If the horizontalScrollPolicy is ScrollPolicy.AUTO, the horizontal >> scroll bar appears when all of the following are true: >> >> * One of the container's children extends beyond the left edge or >> right edge of the container. >> * The clipContent property is true. >> * The width and height of the container are large enough to >> reasonably accommodate a scroll bar. >> >> And sure enough, if I set a static minimum on tiledView, I get the >> desired effect. >> >> If I expand a tile and change the minimum to something else, any idea >> which invalidate method(s) I should call? >> >> On Thu, Jun 5, 2008 at 4:57 PM, Josh McDonald <[EMAIL PROTECTED]> wrote: >> > If you want to be able to measure your subcomponents, always use >> > setActualSize. I learned that the hard way recently :) >> > >> > I've recently been doing a whole bunch of measure and updatedisplaylist >> > voodoo for a custom container, so I'll be slightly helpful! >> > >> > -Josh >> > >> > On Fri, Jun 6, 2008 at 9:36 AM, Richard Rodseth <[EMAIL PROTECTED]> >> > wrote: >> >> >> >> Clearly I haven't mastered layout and measurement. >> >> >> >> I've implemented a custom component which tiles its children in >> >> equal-sized tiles, but also has a state (not a flex state) where one >> >> tile fills the component. >> >> >> >> I subclassed Canvas and set the sizes and positions of children in >> >> updateDisplayList. I didn't override measure(), but it works very >> >> nicely, resizing children smoothly as it is resized. >> >> >> >> Now, however, I would like to set a minimum width and height for the >> >> tiled view, after which scroll bars appear. The minimum will be >> >> different if the component is in the one-tile-expanded case. >> >> >> >> Can I do this without further mods to my component? >> >> Should my updateDisplayList be calling setActualSize rather than >> >> setting x,y,width, height? >> >> Should I have a measure() implementation? >> >> How would it differ from the inherited one? >> >> In a scenario like the following, would I set the minWidth and >> >> minHeight on the parent or child? >> >> Or, to ask another way, do the the scrollpolicy and minimum properties >> >> always belong on the same component? >> >> >> >> <mx:Canvas id="scrollableArea" width="100%" height="100%" >> >> verticalScrollPolicy="auto" >> >> horizontalScrollPolicy="auto"> >> >> >> >> <view:TiledCanvas id="tiledView" >> >> width="100%" height="100%" >> >> > >> >> </view:TiledCanvas> >> >> </mx:Canvas> >> >> >> >> Thanks. >> > >> > >> > >> > -- >> > "Therefore, send not to know For whom the bell tolls. It tolls for >> > thee." >> > >> > :: Josh 'G-Funk' McDonald >> > :: 0437 221 380 :: [EMAIL PROTECTED] >> > > > > > -- > "Therefore, send not to know For whom the bell tolls. It tolls for thee." > > :: Josh 'G-Funk' McDonald > :: 0437 221 380 :: [EMAIL PROTECTED] >
