Its default new tab page, which has a list of featured websites, will change its background to slate gray when dark mode is turned on. You’ll always be greeted with a grayish-white page in Edge, unless you manually change the home page to a website with a dark background. This also applies to the “blank” page that you can choose to select instead of MSN. It’s a web page, not part of the application interface, so it doesn’t get the dark mode treatment. We must again nitpick Microsoft’s approach, though, for a reason that’s as simple as it is silly. Safari and Edge are fundamentally different in feel, but the dark mode version of each is faithful to the ‘light mode’ look. All context and option menus appear to render just as they should, offering a high-contrast experience that looks slick. The colors remain as they were when the application started.Each browser looks great in dark mode. So trying to understand your question Theme = Dark, App starts with "VibrantLight", switch OS theme to Aqua => changes nothing for the application. I found this to be a good read, it clarified quite a bit for me (but then again, I'm not a a Cocoa guru like you are): I'm trying to figure it out myself, but I'll admit it's a bit over my head. That's why I was thinking of implementing this somehow in your MacOSFormProp component. MacOSFormProp, could be used in that particular case. The passed function then has to set Appearance to make the actual change. Instead your application needs to register a function with NSDistributedNotificationCenter, (name " AppleInterfaceThemeChangedNotification") so that the OS can notify the application that a different theme is being used. The only option to get your application to show it's control in VibrantDark is to use your macOS extension and force Appearance to VibrantDark.ģ) A Lazarus Cocoa application will also not detect/pickup when a theme get's change.Ĭhanging the OS theme will have zero influence on the application while it's running.įor 2) and 3): I noticed the same behavior with a Cocoa application build with XCode (v9.4.1) application, so I presume this is expected behavior.įrom what I have read the OS will not change NSColor values when the OS theme changes. So if VibrantDark is the current OS Theme, the application would not have a clue and just show the Aqua theme for it's controls. Obviously the user can change the theme, potentially making the active OS theme no longer Aqua, but for example VibrantDark or VibrantLight.Ģ) A Lazarus Cocoa application will not detect/pickup whatever OS theme is active when it starts. so I'll try to go through the steps, hopefully clarifying things.ġ) Aqua is the default system theme after a fresh OS install. So I'm confused why this doesn't seem to work.Īny input, suggestions, help, etc. Note: A simple test with XCode 9.4.1 shows that even Obj-C applications will not adapt.įrom Apple's own documentation " Supporting Dark Mode in Your Interface", I assumed using "Use a semantic color defined by the NSColor class" would offer support for themes out of the box. Under Windows on the other hand, the new "Dark mode" in Windows 10 is somewhat ignored (something about UWP / Metro Style apps?).Īnyhoo - from the Cocoa Internals Wiki page I got the impression that system colors are tried to be retrieved from the OS (using NSColor), hoping a Cocoa application would adapt to theme changes. I've noticed that Lazarus applications under GTK2 do nicely adapt to theme changes. I was wondering if anyone knows how to make the widget set (Cocoa) respond to the Dark Theme? Cocoa has made some impressive progress and I'm not even touching Carbon anymore (compliments to the guys doing all the hard work! Awesome!).
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