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macoscommand-lineapplescriptdisplay
T. Enz
T. Enz

Reputation: 31

Change macOS display arrangement through command line / applescript?

I have a 3 display setup at work with the following order (from left to right):

macOS Version: 10.13.6

Most likely when I reboot, the order is gone and I have to reset it through System Preferences -> Display -> Arrangement

Is there a way to change the arrangement through command-line or applescript?

Upvotes: 2

Views: 1855

Answers (1)

Philippe Dubé-Tremblay
Philippe Dubé-Tremblay

Reputation: 871

I got tired of that same problem and manage to reduce the 'displayPlacer' mentioned in the link of Mark Setchell to fix this particular problem to this :

#include <IOKit/graphics/IOGraphicsLib.h>
#include <ApplicationServices/ApplicationServices.h>
#include <unistd.h>
#include <math.h>
#include <stdio.h>

int main(int argc, const char * argv[]) {

    CGDirectDisplayID screenList[3];
    CGDirectDisplayID external1;
    CGDirectDisplayID external2;
    CGGetOnlineDisplayList(INT_MAX, screenList, NULL);

    if(CGDisplayIsMain(screenList[0])){
        external1 = screenList[1];
        external2 = screenList[2];
    }else if(CGDisplayIsMain(screenList[1])){
        external1 = screenList[0];
        external2 = screenList[2];
    }else{
        external1 = screenList[1];
        external2 = screenList[2];
    }


    CGDisplayConfigRef configRef;
    CGBeginDisplayConfiguration(&configRef);

    CGConfigureDisplayOrigin(configRef, external1, CGDisplayBounds(external2).origin.x, CGDisplayBounds(external2).origin.y);
    CGConfigureDisplayOrigin(configRef, external2, CGDisplayBounds(external1).origin.x, CGDisplayBounds(external1).origin.y);
    
    CGCompleteDisplayConfiguration(configRef, kCGConfigurePermanently);
}

My C was rusty it may not be very clean... It simply finds the 2 externals screens and reverse their position. It wouldn't be very hard to make preconfigured multiple positions if you change between two setups. It is in C but does the job.

Upvotes: 3

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