Re: Shrinking gifs.. .

Hello, i've got this in the comments: <START> emilus at galeria-m dot art dot pl (30-Sep-2004 10:02) To resize or copy image (gif [with gd>=2.0.28] or png) with transparency. -Take current transparency color -create a new image with palette like old one and fill new image with transparent color -set transparent color -copy resized image $colorTransparent = imagecolortransparent($im); $im2 = imagecreate($new_w,$new_h); imagepalettecopy($im2,$im); imagefill($im2,0,0,$colorTransparent); imagecolortransparent($im2, $colorTransparent); imagecopyresized($im2,$im,0,0,0,0,$new_w,$new_h,$imsx,$imsy); <START> Thanks Martin for the tips.. Regards, Nadim Attari "Martin Norland" a écrit dans le message > nikos wrote: > > Thank you Martin > > I install new gd, reconfigure php and now is running OK. > > > > But, it was a mass to realize that shortening gifs results to loss > > transparency(!). > [snip] > > imagecolortransparent() > > That function will set the transparent color in an image (only one per > image). If you read the description carefully it says that it will > return the existing one if you don't specify a new color... > > so: > $transparent_color = imagecolortransparent($uploaded_img); > imagecolortransparent($thumbnail, $transparent_color); > > That should get you and Nadim what you're looking for, assuming things > work as promised (I've never used it myself). > > If you need to work with pngs and the likes, imagecolorexactalpha / > imagecolorclosestalpha - requires GD 2.01 and PHP 4.0.6 > (imagecolorallocatealpha requires PHP 4.3.2 though, oddly enough) > > cheers, > -- > - Martin Norland, Sys Admin / Database / Web Developer, International > Outreach x3257