>>Thanks, although I was asking John for an example of his concern. ;-)
LoL.. see why programmers dont rule the world.. haha.. Its our specification techniques.. I saw.. "Can you post an example?" and think source.. not.. "Hey John.. whats your concern with the image quality." LoL.. On Tue, Jan 19, 2010 at 11:08 AM, Conor Boyd <conor.b...@trimble.co.nz>wrote: > Thanks for sharing. > > ------------------------------ > *From:* delphi-boun...@delphi.org.nz [mailto:delphi-boun...@delphi.org.nz] > *On Behalf Of *Kyley Harris > *Sent:* Tuesday, 19 January 2010 10:58 a.m. > > *To:* NZ Borland Developers Group - Delphi List > *Subject:* Re: [DUG] Resizing images > > begin > FSourceBMP.Assign(Value); > if Zoom <> 1 then > begin > FBMP.Assign(FSourceBMP); > FBMP.Width := Trunc(FSourceBMP.Width * Zoom); > FBMP.Height := Trunc(FSourceBMP.Height * Zoom); > Stretch(FBMP.Width, FBMP.Height ,sfBox,1,FSourceBMP,FBMP); > end else > FBMP.Assign(FSourceBMP); > FImageAssigned := True; > end; > > here is a snippet using a Zoom variable to stretch with Aspect ratio. Its > basically the same as TCanvas.stretch, but faster and far higher quality. > There are a few options (sfBox, Triangle) etc for how it samples the > pixels.. different ones get better results for Text, photo.. etc.. > > On Tue, Jan 19, 2010 at 10:53 AM, Kyley Harris > <ky...@harrissoftware.com>wrote: > >> Sure.. gimme 5 minutes >> i can email you the source too.. its open >> >> On Tue, Jan 19, 2010 at 10:31 AM, Conor Boyd >> <conor.b...@trimble.co.nz>wrote: >> >>> Can you post your example? Or another example? >>> >>> C. >>> >>> ------------------------------ >>> *From:* delphi-boun...@delphi.org.nz [mailto: >>> delphi-boun...@delphi.org.nz] *On Behalf Of *John Bird >>> *Sent:* Tuesday, 19 January 2010 9:46 a.m. >>> *To:* NZ Borland Developers Group - Delphi List >>> *Subject:* [DUG] Resizing images >>> >>> Resizing images for Images, bitButtons and icons - I guess we all do >>> this. >>> >>> I have used IrfanView and Photofiltre for resizing images, and >>> noticed they tend to alter the edge pixels around an image - I guess it >>> averages the pixel colours on a sharp edge if resizing smaller. This is a >>> problem with images with a background surround - these pixels are not the >>> transparent background colour any more and create a ragged edge noticeable >>> when the image is on a darker background. >>> >>> How do others resize images properly? >>> >>> >>> >>> (Example is the Analogue clock with the image background some are using- >>> over a dark background you may see there are a fewer light pixels around the >>> edge that shouldn't be there) >>> >>> >>> John >>> >>> _______________________________________________ >>> NZ Borland Developers Group - Delphi mailing list >>> Post: delphi@delphi.org.nz >>> Admin: http://delphi.org.nz/mailman/listinfo/delphi >>> Unsubscribe: send an email to delphi-requ...@delphi.org.nz with Subject: >>> unsubscribe >>> >> >> >> >> -- >> Kyley Harris >> Harris Software >> +64-21-671-821 >> > > > > -- > Kyley Harris > Harris Software > +64-21-671-821 > > _______________________________________________ > NZ Borland Developers Group - Delphi mailing list > Post: delphi@delphi.org.nz > Admin: http://delphi.org.nz/mailman/listinfo/delphi > Unsubscribe: send an email to delphi-requ...@delphi.org.nz with Subject: > unsubscribe > -- Kyley Harris Harris Software +64-21-671-821
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