On Thu, 28 Nov 2024 07:28:25 GMT, GennadiyKrivoshein <d...@openjdk.org> wrote:
>> This update allows users to print with grayscale using color printers. >> Actually, it is not possible to use the "Monochrome" option from the "Color >> Appearance" panel. Also Chromaticity.MONOCHROME can't be used to print >> grayscale on color printers >> ([JDK-8315113](https://bugs.openjdk.org/browse/JDK-8315113)). >> >> **Fix description** >> When a printer supports color printing and a user adds >> Chromaticity.MONOCHROME attribute to a PrintRequestAttributeSet, then the >> final printing raster is transformed to the grayscale color using >> java.awt.image.ColorConvertOp. When the job is a PostScript job, then the >> "setColor" and "setPaint" methods of the Graphics are overridden, and user >> colors (paints) are transformed to the grayscale form using the new proxy >> class GrayscaleProxyGraphics2D. >> >> This approach is assumed to be platform, CUPS, and IPP protocol independent. >> >> **Tests** >> The fix was tested on Ubuntu 22.04 and MacOS 12.6.1. > > GennadiyKrivoshein has updated the pull request with a new target base due to > a merge or a rebase. The pull request now contains eight commits: > > - Merge remote-tracking branch 'openjdk/master' into monochrome-printing > > # Conflicts: > # src/java.desktop/share/classes/sun/print/RasterPrinterJob.java > - Merge remote-tracking branch 'openjdk/master' into monochrome-printing > - move grayscale methods to PSPathGraphics > - Update src/java.desktop/macosx/classes/sun/lwawt/macosx/CPrinterJob.java > > Co-authored-by: Andrey Turbanov <turban...@gmail.com> > - update copyright > - formatting > - grammar fixes > - 8315113: Print request Chromaticity.MONOCHROME attribute does not work on > macOS @prsadhuk please look at this ------------- PR Comment: https://git.openjdk.org/jdk/pull/21930#issuecomment-2518357989
