To comment on the following update, log in, then open the issue: http://www.openoffice.org/issues/show_bug.cgi?id=60368 Issue #:|60368 Summary:|Toolbar icons should not have gamma correction Component:|ui Version:|OOo 2.0.1 Platform:|All URL:| OS/Version:|All Status:|UNCONFIRMED Status whiteboard:| Keywords:| Resolution:| Issue type:|DEFECT Priority:|P3 Subcomponent:|code Assigned to:|os Reported by:|ace_dent
------- Additional comments from [EMAIL PROTECTED] Wed Jan 11 07:31:56 -0800 2006 ------- With .png files, comes the possibility to include gamma correction. While useful for graphic design and photo images, this can lead to problems with icon style graphics. Icons are often drawn as paletted images, where the RGB values are taken to be absolute. Furthermore, it is well established that applications (such as Photoshop) can produce inappropriate gamma chunks. Having surveyed the icons in 'default_images', there are many icons with and without gamma data. Those that have, sometimes have the gamma data for a Mac (0.65909) or PC (0.45455) or other- although the 'standard' colours (e.g. Sun Purple) have the same RGB values. Currently as icons are read in (pngread.cxx?), the gamma is being adjusted where indicated. With the increased ability to theme the UI (see i36518), it is likely that problems (even if subtle) will arise due to gamma correction. This is illustrated in the attached screenshots. I propose that for UI images (icons and such), no gamma correction is applied- this will ensure icons are in fact more consistent and will improve efficiency (less decoding). Other colour correction chunks should also be ignored: cHRM - Primary chromaticities sRGB - Standard RGB color space iCCP - Embedded ICC profile Regards, Andrew Reference last paragraph (first hit on Google...): http://hsivonen.iki.fi/png-gamma/ --------------------------------------------------------------------- Please do not reply to this automatically generated notification from Issue Tracker. Please log onto the website and enter your comments. http://qa.openoffice.org/issue_handling/project_issues.html#notification --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
