PreviewMarkdown’s Thumbnailer component, an App Extension which generates Finder icon thumbnail previews of Markdown documents, recently started showing some odd behaviour. Tracking down the cause provided some interesting insights into writing macOS software for a multi-threaded environment.Continue reading
In the mid-1980s, I loved Phantom Slayer. Written for the Tandy Color Computer and made available for the Dragon 32, Phantom Slayer was a 3D maze shooter. Think a very basic version of Doom with colours but no textures. It wasn’t sophisticated, but it was quick and, more to the point, incredibly atmospheric.Continue reading
Fontismo, my iOS-based utility which provides completely free and account-less access to 50 great open licence typefaces, now works on iPhones as well as iPads. It’s also fully compatible with iOS 14 and features improved font previewing, including pinch-to-zoom scaling.Continue reading
Bear with me on this one. What really makes the Raspberry Pi what it is? Linux? No, because there are plenty of machines the open source OS will run on. Linux is a Unix derivative; the basis of macOS is FreeBSD, also a Unix derivative.
Sure the Pi is only 40 quid and small, but for me what really makes the Pi stand out from all those laptop and desktop computers is the fact that it makes its microcontroller’s GPIO pins readily accessible through a handy set of header pins. Unlike all ‘serious’ micros, it’s perfect for connecting to and controlling a whole stack of add-ons, including sensors, displays inputs and actuators.
Update My PreviewMarkdown app, which provides Markdown file previews and icon thumbnails in Catalins, is now available from the Mac App Store.
Providing content-based icon thumbnails in macOS Catalina follows the same pattern as generating file previews: QuickLook runs code from an app extension and calls a function within that code to draw the image that will be placed on the icon.Continue reading
Update My PreviewMarkdown app, which provides Markdown file previews and icon thumbnails in Catalina, is now available from the Mac App Store.
macOS Catalina introduces a new mechanism for providing file previews and content-based file icons. The system for doing this is still QuickLook, but the standalone or app-hosted QuickLook generators that have been in use for some time have been deprecated in favour of delivering this functionality through app extensions.Continue reading