Hi Ken, I can build a test app - give me a couple hours to put it together.
As for antialiasing, I thought that might be the problem, but I set the image interpolation on the graphics context to NSImageInterpolationNone and get the same results. I am on Leopard 10.5.4 (this all has to work on Tiger, as well though). Thanks - Dave.S On Thu, Aug 21, 2008 at 2:26 PM, Ken Ferry <[EMAIL PROTECTED]> wrote: > Hi David, > > Could you post a complete test app? There's nothing in what you've > posted that looks problematic[1]. Also, what OS are you working on? > > -Ken > > [1]: well, except maybe that you're likely to see antialiasing on the edges. > Your problem looks more severe than antialiasing, though. > > On Thu, Aug 21, 2008 at 12:47 PM, David Springer <[EMAIL PROTECTED]> wrote: >> Folks, >> >> For some reason, I am not able to figure this out. I want to draw a >> scaled NSImage, but the edges of the image are not drawn, it seems >> like the resizing actually clips the image. >> >> I have an NSBitmapImageRep created from some data. I then create the >> NSImage like this: >> >> NSImage *image = [[NSImage alloc] initWithSize:NSMakeSize([myBitmap >> pixelsWide], [myBitmap pixelsHigh]); >> [image addRepresentation:myBitmap]; >> [image setScalesWhenResized:YES]; >> >> // Figure out the new image size so that it is proportionally scaled >> by |scaleFactor|. >> NSSize scaledSize = ProportionallyScale([image size], scaleFactor); >> [image drawInRect:NSMakeRect((kTileImageSize - scaledSize.width) * 0.5, >> (kTileImageSize - scaledSize.height) * 0.5, >> scaledSize.width, >> scaledSize.height) >> fromRect:NSZeroRect >> operation:NSCompositeSourceOver >> fraction:1.0]; >> >> This sometimes works (that is, the entire original image is visible). >> But more often than not, the edges of the original image are not >> drawn. See the screen shots for a picture of what I get. >> >> What am I doing wrong here? I have scoured the archives, I have tried >> things like making sure scaledSize has integer values, I have even >> done crazy things like add one to the height just to see what would >> happen. Note that if I write out the TIFFRepresentation of |image| >> (both before and after) the entire image gets into the file (that is, >> the edges are not clipped). >> >> In the attached picture, the top tile is correct (you see all the >> black edges), the bottom two tiles are incorrect (not all the black >> edges are visible). >> >> Help? >> Thanks! >> - Dave.S >> >> _______________________________________________ >> >> Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) >> >> Please do not post admin requests or moderator comments to the list. >> Contact the moderators at cocoa-dev-admins(at)lists.apple.com >> >> Help/Unsubscribe/Update your Subscription: >> http://lists.apple.com/mailman/options/cocoa-dev/kenferry%40gmail.com >> >> This email sent to [EMAIL PROTECTED] >> > _______________________________________________ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to [EMAIL PROTECTED]
