> 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 ------------- Changes: https://git.openjdk.org/jdk/pull/21930/files Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=21930&range=03 Stats: 488 lines in 6 files changed: 482 ins; 0 del; 6 mod Patch: https://git.openjdk.org/jdk/pull/21930.diff Fetch: git fetch https://git.openjdk.org/jdk.git pull/21930/head:pull/21930 PR: https://git.openjdk.org/jdk/pull/21930
