On Mon, 5 Oct 2020 19:14:23 GMT, Sergey Bylokhov <s...@openjdk.org> wrote:
>> [JDK-8252015: [macos11] java.awt.TrayIcon requires updates for template >> images](https://bugs.openjdk.java.net/browse/JDK-8252015) >> ### Problem >> According to Apple's human interface guidelines, developers should use >> template images for tray icons. This way icons >> look good when desktop theme or wallpaper change. On the API level, this >> means setting the `NSImage::isTemplate` flag. >> Currently there's no way in Java to set this flag. Even if one uses a >> template (black and transparent pixels only) >> image, MacOS will treat it as regular image. As a result, the image will not >> be visible when using dark theme. ### >> Solution: >> * If `sun.awt.enableTemplateImages` property is set, all tray icon images >> are treated as templates. It's the developers' >> responsibility to ensure their images are indeed templates. This property >> allows us to avoid new API and accidental >> behavior changes >> * Value of this property is passed from Java into `NSImage::setTemplate` >> * We need the tray icon image rendered by MacOS, so we use a button (rather >> than a view) to host the image > > Hi, Peter. You are welcome! > Just an initial question about the template images, can you please provide > some steps to reproduce this bug and so it > will be possible to check that the fix solves it. Hi Sergey, and thanks for looking into this! Try the attached jar, it's a modified version of TrayIconDemo using a template icon taken from Wikimedia Commons. Without the fix, or without `-Dsun.awt.enableTemplateImages`, the icon disappears if you switch to Dark theme. With the fix and the property set, the system repaints it in white. [TrayIconDemo.jar.zip](https://github.com/openjdk/jdk/files/5332241/TrayIconDemo.jar.zip) ------------- PR: https://git.openjdk.java.net/jdk/pull/481
