Reset display brightness to 0

[VampireSilence]

I'd appreciate it if dmon also constantly reset the display brightness to 0. Some devices keep bugging me with that.

#import <UIKit/UIKit.h>

int dimDisplayBrightness (void)
{
    @autoreleasepool
    {
        UIScreen *mainScreen = [UIScreen mainScreen];
        mainScreen.brightness = 0.0f;
    }
    return 0;
}

[clburlison]

Really like this idea. Will likely get this added in the next release.

[clburlison]

I played with this over the weekend and couldn't get it to work. Since dmon isn't a UI application this might need to be moved into a tweak of some kind.

[VampireSilence]

True, i didn't consider that. But IOKit should be available in a background daemon, so we could try something like that:

#include <stdio.h>
#include <IOKit/graphics/IOGraphicsLib.h>

int dimDisplayBrightness (void)
{
    io_service_t displayWrangler = IOServiceGetMatchingService(kIOMasterPortDefault, IOServiceMatching("IODisplayWrangler"));

    if (displayWrangler != IO_OBJECT_NULL)
    {
        IODisplaySetFloatParameter(displayWrangler, kNilOptions, CFSTR(kIODisplayBrightnessKey), 0.0f);
        IOObjectRelease(displayWrangler);
    }

    return 0;
}