> 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 incrementally with one additional commit since the last revision: Use PassFailJFrame for test. Move GrayscaleProxyGraphics2D.java to the shared classes. Update copyright year. ------------- Changes: - all: https://git.openjdk.org/jdk/pull/21930/files - new: https://git.openjdk.org/jdk/pull/21930/files/5486473b..c4850933 Webrevs: - full: https://webrevs.openjdk.org/?repo=jdk&pr=21930&range=05 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=21930&range=04-05 Stats: 270 lines in 4 files changed: 58 ins; 140 del; 72 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
