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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 December 6, 2019 18:58
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) {
ccgus / gist:a475e2916f1e860b3b7dd2143862d5a5
Created September 19, 2018 16:28
Calling Core Image with FMJS
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);