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August "Gus" Mueller ccgus

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View main.m
#import <Foundation/Foundation.h>
#import <dlfcn.h>
// clang main.m -framework Foundation
int main(int argc, const char * argv[]) {
@autoreleasepool {
dlopen("/System/Library/Frameworks/CoreGraphics.framework/Resources/BridgeSupport/CoreGraphics.dylib", RTLD_LAZY);
View 10.15.4 initWithHTML: attributed string change
from AppKit import *
from Foundation import *
html = NSString.stringWithString_("<b style='font-size: 20px; font-family: HelveticaNeue'>Hi</b>")
d = html.dataUsingEncoding_(NSUTF8StringEncoding);
ats = NSAttributedString.alloc().initWithHTML_options_documentAttributes_(d, None, None)[0];
ps = ats.attribute_atIndex_effectiveRange_(NSParagraphStyleAttributeName, 0, None)[0]
ccgus / Leaky16BPCTiff.m
Last active Dec 6, 2019
Asking the internet for help to make sure I'm not being stupid.
View Leaky16BPCTiff.m
This sample shows how CGImageSourceCreateThumbnailAtIndex leaks something akin
to the memory behind a CGImageRef when asked to create a thumbnail for a 16bpc
TIFF image if one isn't present.
Full sample project here:
View nodestyle.m
- (FJSValue*)evaluateModuleAtURL:(NSURL*)scriptURL {
if (scriptURL) {
NSError *error;
NSString *script = [NSString stringWithContentsOfURL:scriptURL encoding:NSUTF8StringEncoding error:&error];
if (script) {
View AddCursor.jstalk
How to install this plugin:
1) Choose Acorn's Help ▸ Open Acorn's App Support Folder menu item.
2) Place this script in the Plug-Ins folder (and make sure it ends with .jstalk)
3) Restart Acorn. The plugin will now show up in the Filter menu.
function main(image, doc, layer) {
View gist:a475e2916f1e860b3b7dd2143862d5a5
var url = NSURL.fileURLWithPath_('/Library/Desktop Pictures/Yosemite.jpg');
var img = CIImage.imageWithContentsOfURL_(url)
var f = CIFilter.filterWithName_('CIColorInvert');
f.setValue_forKey_(img, kCIInputImageKey);
var r = f.outputImage();
var tiff = r.TIFFRepresentation();
tiff.writeToFile_atomically_('/tmp/foo.tiff', true);
View TSCreateImageFromIOSurface
void TSCreateImageFromIOSurfaceReleaseCallback(void * __nullable info, const void *data, size_t size);
void TSCreateImageFromIOSurfaceReleaseCallback(void * __nullable info, const void *data, size_t size) {
CGImageRef TSCreateImageFromIOSurface(IOSurfaceRef surface, CGColorSpaceRef cs) {
View bring to front
NSWorkspace *workspace = [NSWorkspace sharedWorkspace];
NSDictionary *activeAppDict = [workspace activeApplication];
ProcessSerialNumber psn;
psn.highLongOfPSN = [[activeAppDict objectForKey:@"NSApplicationProcessSerialNumberHigh"] intValue];
psn.lowLongOfPSN = [[activeAppDict objectForKey:@"NSApplicationProcessSerialNumberLow"] intValue];
SetFrontProcess( &psn );
View gist:de321e5a00894f8f7df57b78d7468ba8
NSImageRep *originalCursorRep = [originalCursorImage bestRepresentationForRect:NSMakeRect(0, 0, [originalCursorImage size].width * retinaScale, [originalCursorImage size].height * retinaScale) context:nil hints:[NSDictionary dictionaryWithObject:[NSAffineTransform transform] forKey:NSImageHintCTM]];
View what.swift
import Cocoa
import ImageIO
import CoreGraphics
var cs = CGColorSpaceCreateDeviceRGB();
var bitmapOptions = CGBitmapInfo.byteOrder16Little.rawValue | CGImageAlphaInfo.premultipliedLast.rawValue;
var bitmapContext = CGContext(data: nil, width: 10, height: 10, bitsPerComponent: 16, bytesPerRow: 0, space: cs, bitmapInfo: bitmapOptions);