void drawTextWithFeature(CGContextRef context, CTFontDescriptorRef fontDescriptor, CFStringRef feature, int value, CGPoint location)
{
CGFloat fontSize = 25;
CGContextSetTextMatrix(context, CGAffineTransformScale(CGAffineTransformIdentity, 1, 1));
CGContextSetTextPosition(context, location.x, location.y);
CFNumberRef featureValue = CFNumberCreate(kCFAllocatorDefault, kCFNumberIntType, &value);
CFTypeRef featureDictionaryKeys[] = { kCTFontOpenTypeFeatureTag, kCTFontOpenTypeFeatureValue };
CFTypeRef featureDictionaryValues[] = { feature, featureValue };
CFDictionaryRef featureDictionary = CFDictionaryCreate(kCFAllocatorDefault, featureDictionaryKeys, featureDictionaryValues, 2, &kCFTypeDictionaryKeyCallBacks, &kCFTypeDictionaryValueCallBacks);
CFRelease(featureValue);
CFTypeRef featureSettingsValues[] = { featureDictionary };
CFArrayRef fontFeatureSettings = CFArrayCreate(kCFAllocatorDefault, featureSettingsValues, 1, &kCFTypeArrayCallBacks);
CFRelease(featureDictionary);
CFTypeRef fontDescriptorKeys[] = { kCTFontFeatureSettingsAttribute };
CFTypeRef fontDescriptorValues[] = { fontFeatureSettings };
CFDictionaryRef fontDescriptorAttributes = CFDictionaryCreate(kCFAllocatorDefault, fontDescriptorKeys, fontDescriptorValues, 1, &kCFTypeDictionaryKeyCallBacks, &kCFTypeDictionaryValueCallBacks);
CFRelease(fontFeatureSettings);
CTFontDescriptorRef modifiedFontDescriptor = CTFontDescriptorCreateCopyWithAttributes(fontDescriptor, fontDescriptorAttributes);
CFRelease(fontDescriptorAttributes);
CTFontRef font = CTFontCreateWithFontDescriptor(modifiedFontDescriptor, fontSize, nullptr);
CFRelease(modifiedFontDescriptor);
CFMutableStringRef string = CFStringCreateMutable(kCFAllocatorDefault, 0);
CFStringAppend(string, feature);
CFStringAppend(string, value ? CFSTR(" (on)") : CFSTR(" (off)"));
CFStringAppend(string, CFSTR(": ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz"));
CGColorRef red = CGColorCreateGenericRGB(1, 0, 0, 1);
CFTypeRef lineKeys[] = { kCTForegroundColorAttributeName };
CFTypeRef lineValues[] = { red };
CFDictionaryRef lineAttributes = CFDictionaryCreate(kCFAllocatorDefault, lineKeys, lineValues, 1, &kCFTypeDictionaryKeyCallBacks, &kCFTypeDictionaryValueCallBacks);
CGColorRelease(red);
CFAttributedStringRef attributedString = CFAttributedStringCreate(kCFAllocatorDefault, string, lineAttributes);
CFRelease(lineAttributes);
CFRelease(string);
CFMutableAttributedStringRef mutableAttributedString = CFAttributedStringCreateMutableCopy(kCFAllocatorDefault, 0, attributedString);
CFRelease(attributedString);
CTFontRef monospaceFont = CTFontCreateWithName(CFSTR("Courier"), fontSize, nullptr);
CFAttributedStringSetAttribute(mutableAttributedString, CFRangeMake(0, 12), kCTFontAttributeName, monospaceFont);
CFRelease(monospaceFont);
CFAttributedStringSetAttribute(mutableAttributedString, CFRangeMake(12, 52), kCTFontAttributeName, font);
CFRelease(font);
CTLineRef line = CTLineCreateWithAttributedString(mutableAttributedString);
CFRelease(mutableAttributedString);
CTLineDraw(line, context);
CFRelease(line);
}
OSStatus GenerateThumbnailForURL(void *thisInterface,
QLThumbnailRequestRef thumbnail,
CFURLRef url, CFStringRef contentTypeUTI,
CFDictionaryRef options, CGSize maxSize)
{
CGFloat minCartDrawSize = 64;
CGFloat size = fmin(maxSize.width, maxSize.height);
CGContextRef qlContext = NULL;
if (size < minCartDrawSize) {
size = 32;
qlContext = QLThumbnailRequestCreateContext(thumbnail, CGSizeMake(size,size), true, NULL);
}
else
{
qlContext = QLThumbnailRequestCreateContext(thumbnail, CGSizeMake(size,size), false, NULL);
}
if (qlContext) {
NDSHeader header;
NDSIcon icon;
int pathlen = 2047;
UInt8 path[pathlen+1];
if (CFURLGetFileSystemRepresentation(url, true, path, pathlen)) {
if (size < minCartDrawSize) { // at smaller sizes we only draw the game icon at native size and let QL do the scaling
parseNDSInfo(path, &header, &icon);
CGImageRef image = CGImageCreateWithNDSIcon(&icon);
if (image) {
CGContextDrawImage(qlContext, CGRectMake(0, 0, size, size), image);
CGImageRelease(image);
}
}
else
{
CGContextClearRect(qlContext, CGRectMake(0,0,size,size));
// draw cartridge background
CFURLRef bgURL = CFBundleCopyResourceURL(CFBundleGetBundleWithIdentifier(
CFSTR("net.mironer.nds.quicklookgenerator")), CFSTR("background"), CFSTR("png"), NULL);
if (bgURL) {
CGDataProviderRef bgPNG = CGDataProviderCreateWithURL(bgURL);
if (bgPNG) {
CGImageRef bg = CGImageCreateWithPNGDataProvider(bgPNG, NULL, true, kCGRenderingIntentDefault);
if (bg) {
CGContextDrawImage(qlContext, CGRectMake(0, 0, size, size), bg);
CGImageRelease(bg);
}
CGDataProviderRelease(bgPNG);
}
CFRelease(bgURL);
}
// draw game icon
parseNDSInfo(path, &header, &icon);
CGImageRef image = CGImageCreateWithNDSIcon(&icon);
if (image) {
CGContextDrawImage(qlContext, CGRectMake(size / 5, size / 5, size * 3 / 5, size * 3 / 5), image);
CGImageRelease(image);
}
// draw cartridge overlay
CFURLRef ovrURL = CFBundleCopyResourceURL(
CFBundleGetBundleWithIdentifier(
CFSTR("net.mironer.nds.quicklookgenerator")), CFSTR("overlay"), CFSTR("png"), NULL);
if (ovrURL) {
CGDataProviderRef ovrPNG = CGDataProviderCreateWithURL(ovrURL);
if (ovrPNG) {
CGImageRef ovr = CGImageCreateWithPNGDataProvider(ovrPNG, NULL, true, kCGRenderingIntentDefault);
if (ovr) {
CGContextDrawImage(qlContext, CGRectMake(0, 0, size, size), ovr);
CGImageRelease(ovr);
}
CGDataProviderRelease(ovrPNG);
}
CFRelease(ovrURL);
}
// draw serial number
CFStringRef serial = CFStringCreateWithSerialNumber(&header);
CFAttributedStringRef aString = CFAttributedStringCreate(kCFAllocatorDefault, serial, NULL);
CFMutableAttributedStringRef attrStr = CFAttributedStringCreateMutableCopy(kCFAllocatorDefault, 128, aString);
CFIndex len = CFAttributedStringGetLength(attrStr);
CTFontRef font = CTFontCreateWithName(CFSTR("Lucida Sans"), size / 16, NULL);
CFAttributedStringSetAttribute(attrStr, CFRangeMake(0, len), kCTFontAttributeName, font);
CTTextAlignment rightAlign = kCTRightTextAlignment;
CTParagraphStyleSetting styleSettings[] = { {kCTParagraphStyleSpecifierAlignment, sizeof(rightAlign), &rightAlign} };
CTParagraphStyleRef paragraphStyle = CTParagraphStyleCreate(styleSettings, 1);
CFAttributedStringSetAttribute(attrStr, CFRangeMake(0, len), kCTParagraphStyleAttributeName, paragraphStyle);
CTFramesetterRef framesetter = CTFramesetterCreateWithAttributedString(attrStr);
CFRelease(attrStr);
CFRelease(aString);
CFRelease(serial);
CFRelease(font);
CGMutablePathRef path = CGPathCreateMutable();
CGPathAddRect(path, NULL, CGRectMake(-size * 1.55 / 8, -size * 6.1 / 8, size, size));
CTFrameRef frame = CTFramesetterCreateFrame(framesetter, CFRangeMake(0, 0), path, NULL);
CTFrameDraw(frame, qlContext);
CFRelease(frame);
CFRelease(framesetter);
CFRelease(paragraphStyle);
CFRelease(path);
}
}
QLThumbnailRequestFlushContext(thumbnail, qlContext);
CFRelease(qlContext);
}
return noErr;
}