rustdesk/src/platform/macos.mm

#import <AVFoundation/AVFoundation.h>
#import <AppKit/AppKit.h>
#import <IOKit/hidsystem/IOHIDLib.h>

// https://github.com/codebytere/node-mac-permissions/blob/main/permissions.mm

extern "C" bool InputMonitoringAuthStatus(bool prompt) {
    if (floor(NSAppKitVersionNumber) >= NSAppKitVersionNumber10_15) {
        IOHIDAccessType theType = IOHIDCheckAccess(kIOHIDRequestTypeListenEvent);
        NSLog(@"IOHIDCheckAccess = %d, kIOHIDAccessTypeGranted = %d", theType, kIOHIDAccessTypeGranted);
        switch (theType) {
            case kIOHIDAccessTypeGranted:
                return true;
                break;
            case kIOHIDAccessTypeDenied: {
                if (prompt) {
                    NSString *urlString = @"x-apple.systempreferences:com.apple.preference.security?Privacy_ListenEvent";
                    [[NSWorkspace sharedWorkspace] openURL:[NSURL URLWithString:urlString]];
                }
                break;
            }
            case kIOHIDAccessTypeUnknown: {
                if (prompt) {
                    bool result = IOHIDRequestAccess(kIOHIDRequestTypeListenEvent);
                    NSLog(@"IOHIDRequestAccess result = %d", result);
                }
                break;
            }
            default:
                break;
        }
    } else {
        return true;
    }
    return false;
}

extern "C" float BackingScaleFactor() {
    NSScreen* s = [NSScreen mainScreen];
    if (s) return [s backingScaleFactor];
    return 1;
}

// https://github.com/jhford/screenresolution/blob/master/cg_utils.c
// https://github.com/jdoupe/screenres/blob/master/setgetscreen.m

extern "C" bool MacGetModeNum(CGDirectDisplayID display, uint32_t *numModes) {
    CFArrayRef allModes = CGDisplayCopyAllDisplayModes(display, NULL);
    if (allModes == NULL) {
        return false;
    }
    *numModes = CFArrayGetCount(allModes);
    CFRelease(allModes);
    return true;
}

extern "C" bool MacGetModes(CGDirectDisplayID display, uint32_t *widths, uint32_t *heights, uint32_t max, uint32_t *numModes) {
    CFArrayRef allModes = CGDisplayCopyAllDisplayModes(display, NULL);
    if (allModes == NULL) {
        return false;
    }
    *numModes = CFArrayGetCount(allModes);
    for (uint32_t i = 0; i < *numModes && i < max; i++) {
        CGDisplayModeRef mode = (CGDisplayModeRef)CFArrayGetValueAtIndex(allModes, i);
        widths[i] = (uint32_t)CGDisplayModeGetWidth(mode);
        heights[i] = (uint32_t)CGDisplayModeGetHeight(mode);
    }
    CFRelease(allModes);
    return true;
}

extern "C" bool MacGetMode(CGDirectDisplayID display, uint32_t *width, uint32_t *height) {
    CGDisplayModeRef mode = CGDisplayCopyDisplayMode(display);
    if (mode == NULL) {
        return false;
    }
    *width = (uint32_t)CGDisplayModeGetWidth(mode);
    *height = (uint32_t)CGDisplayModeGetHeight(mode);
    CGDisplayModeRelease(mode);
    return true;
}

size_t bitDepth(CGDisplayModeRef mode) {
    size_t depth = 0;
	CFStringRef pixelEncoding = CGDisplayModeCopyPixelEncoding(mode);
    // my numerical representation for kIO16BitFloatPixels and kIO32bitFloatPixels
    // are made up and possibly non-sensical
    if (kCFCompareEqualTo == CFStringCompare(pixelEncoding, CFSTR(kIO32BitFloatPixels), kCFCompareCaseInsensitive)) {
        depth = 96;
    } else if (kCFCompareEqualTo == CFStringCompare(pixelEncoding, CFSTR(kIO64BitDirectPixels), kCFCompareCaseInsensitive)) {
        depth = 64;
    } else if (kCFCompareEqualTo == CFStringCompare(pixelEncoding, CFSTR(kIO16BitFloatPixels), kCFCompareCaseInsensitive)) {
        depth = 48;
    } else if (kCFCompareEqualTo == CFStringCompare(pixelEncoding, CFSTR(IO32BitDirectPixels), kCFCompareCaseInsensitive)) {
        depth = 32;
    } else if (kCFCompareEqualTo == CFStringCompare(pixelEncoding, CFSTR(kIO30BitDirectPixels), kCFCompareCaseInsensitive)) {
        depth = 30;
    } else if (kCFCompareEqualTo == CFStringCompare(pixelEncoding, CFSTR(IO16BitDirectPixels), kCFCompareCaseInsensitive)) {
        depth = 16;
    } else if (kCFCompareEqualTo == CFStringCompare(pixelEncoding, CFSTR(IO8BitIndexedPixels), kCFCompareCaseInsensitive)) {
        depth = 8;
    }
    CFRelease(pixelEncoding);
    return depth;
}

bool setDisplayToMode(CGDirectDisplayID display, CGDisplayModeRef mode) {
    CGError rc;
    CGDisplayConfigRef config;
    rc = CGBeginDisplayConfiguration(&config);
    if (rc != kCGErrorSuccess) {
        return false;
    }
    rc = CGConfigureDisplayWithDisplayMode(config, display, mode, NULL);
    if (rc != kCGErrorSuccess) {
        return false;
    }
    rc = CGCompleteDisplayConfiguration(config, kCGConfigureForSession);
    if (rc != kCGErrorSuccess) {
        return false;
    }
    return true;
}


extern "C" bool MacSetMode(CGDirectDisplayID display, uint32_t width, uint32_t height)
{
    bool ret = false;
    CGDisplayModeRef currentMode = CGDisplayCopyDisplayMode(display);
    if (currentMode == NULL) {
        return ret;
    }
    CFArrayRef allModes = CGDisplayCopyAllDisplayModes(display, NULL);
    if (allModes == NULL) {
        CGDisplayModeRelease(currentMode);
        return ret;
    }
    int numModes = CFArrayGetCount(allModes);
    for (int i = 0; i < numModes; i++) {
        CGDisplayModeRef mode = (CGDisplayModeRef)CFArrayGetValueAtIndex(allModes, i);
        if (width == CGDisplayModeGetWidth(mode) &&
            height == CGDisplayModeGetHeight(mode) && 
            bitDepth(currentMode) == bitDepth(mode) &&
            CGDisplayModeGetRefreshRate(currentMode) == CGDisplayModeGetRefreshRate(mode)) {
            ret = setDisplayToMode(display, mode);
            break;
        }
    }
    CGDisplayModeRelease(currentMode);
    CFRelease(allModes);
    return ret;
}