Question

如何编写在Mac上运行的脚本以反转屏幕颜色？

与How to programmatically invert screen colors in Linux类似，但遗憾的是xcalib可以在Windows和Linux上运行，但据我所知，不适用于Mac。

编辑：我有部分解决方案。在翻转屏幕颜色之前和之后，我找到了一种转储所有设置的方法：

$ mkdir before && mkdir after && cd before
$ for d in $(defaults domains | sed 's/,//g'); do defaults read $d > $d; done
$ cd ../after
$ # System Preferences > Universal Access > Display > White on Black
$ for d in $(defaults domains | sed 's/,//g'); do defaults read $d > $d; done
$ diff -r before after
diff -r before/com.apple.CoreGraphics after/com.apple.CoreGraphics
3c3
<     DisplayUseInvertedPolarity = 0;
---
>     DisplayUseInvertedPolarity = 1;
diff -r before/com.apple.universalaccess after/com.apple.universalaccess
5c5
<     whiteOnBlack = 0;
---
>     whiteOnBlack = 1;

所以现在我知道哪些设置负责屏幕反转。但是，当我尝试显而易见的时候，

$ defaults write com.apple.universalaccess whiteOnBlack -int 1
$ defaults write com.apple.CoreGraphics DisplayUseInvertedPolarity -int 1

什么都没发生。据推测，无论程序使用这些值，都需要告诉它们重新加载它们（因为例如dotfiles的例子需要杀死Finder才能生效）。但我不确定那些应用程序是什么，或者这是否是正确的解决方案。

Answer 1

这段Apple脚本将会这样做：

tell application "System Events"
    key code 28 using {control down, option down, command down}
end tell

这使用Control-Option-Cmd-8快捷键（键码28是数字8）。你必须弄清楚如何从你需要的任何东西中调用它......

Answer 2

您可以尝试使用GUI脚本来完善此片段以返回当前状态。该值似乎是只读的，并尝试将其设置为1或0失败。

tell application "System Preferences"
    launch
    set current pane to pane "com.apple.preference.universalaccess"
    tell application "System Events"
        return value of checkbox "Invert colors" of window 1 of process "System Preferences"
    end tell
    quit
end

Answer 3

tell application "System Preferences"
  activate
  reveal anchor "Seeing_Display" of pane id "com.apple.preference.universalaccess"
  tell application "System Events" to tell process "System Preferences"
    click the checkbox "Invert colors" of window "Accessibility"
  end tell
end tell
tell application "System Preferences" to quit

如何在Mac上以编程方式反转屏幕颜色

3 个答案: