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The functionality offered by Region could be extended to include: 1. Non-rectangular regions polygons, ellipses, arc segments... Win32: CreateEllipticRgn, CreatePolygonRgn, create using CombineRgn X: XCreatePolygonRegion (others may not be possible other than via emulation, which we probably want to avoid) 2. Region origin translation useful when converting a region defined in terms of someone else's coordinate system like a parent or child to something you can use Win32: OffsetRgn X: XOffsetRegion 3. Additional region composition functionality esp. producting regions that are the intersection or difference of other regions instead of just the union Win32: CombineRgn flags X: XUnionRegion, XIntersectRegion, XSubtractRegion 4. GC functions that use regions to perform tasks copyArea through a Region mask drawImage through a Region mask fill a Region with a pattern 5. Add redraw(Region) to the list of supported operations for Controls on those systems that would not support it, the function could just get a bounding rectangle for the region and redraw that NOTES: JB (26/06/2001 10:55:05 AM) In reconsideration, item 4 above is rather pointless. Except for copyArea() through a Region mask, everything there can be done by setting the clipping on the GC in question. Though perhaps useful idioms of that ilk are to be found elsewhere.
PRODUCT VERSION: Build 125
To be considered as part of a possible future SWT graphics rework.
Moving from Later.
1) and 3) have already been added for 3.0. I believe 4) can be achieved using GC.setClipping(Region). Moving to SSQ.
I have added Region.translate(). So 1), 2), 3) and 4) are available in 3.1. I opened a new bug report for 5) (see bug#76198). Nothing else left here.
