From bcc17a4e6dad572862527165841084fef9edadb5 Mon Sep 17 00:00:00 2001
From: Pietro Gagliardi <pietro10@mac.com>
Date: Tue, 22 Dec 2015 21:48:26 -0500
Subject: [PATCH] Attempted to write the font enumeration code for OS X. It
 does not work yet (memory management is borked and duplicate removal does not
 work, period).

---
 darwin/draw.m | 94 +++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 94 insertions(+)

diff --git a/darwin/draw.m b/darwin/draw.m
index 4405b30a..3b94f201 100644
--- a/darwin/draw.m
+++ b/darwin/draw.m
@@ -447,3 +447,97 @@ void uiDrawRestore(uiDrawContext *c)
 {
 	CGContextRestoreGState(c->c);
 }
+
+// TODO for all relevant routines, make sure we are freeing memory correctly
+// TODO make sure allocation failures throw exceptions?
+struct uiDrawFontFamilies {
+/*
+	CFNumberRef one;
+	CFDictionaryRef options;
+	CTFontCollectionRef collection;
+	CFArrayRef fonts;
+*/
+	NSFontCollection *collection;
+	NSArray *fonts;
+};
+
+uiDrawFontFamilies *uiDrawListFontFamilies(void)
+{
+	uiDrawFontFamilies *ff;
+/*
+	const void *keys[1];
+	const void *values[1];
+	SInt32 one = 1;
+*/
+
+	ff = uiNew(uiDrawFontFamilies);
+
+/*
+	ff->one = CFNumberCreate(NULL, kCFNumberSInt32Type, &one);
+
+	// needed as the matching descriptors can have 
+	keys[0] = kCTFontCollectionRemoveDuplicatesOption;
+	values[0] = ff->one;
+	// TODO kCTFontCollectionIncludeDisabledFontsOption? the Windows code enumerates hidden fonts; disable that?
+	ff->options = CFDictionaryCreate(NULL,
+		keys, values, 1,
+		NULL, NULL);
+NSLog(@"%@", ff->options);
+
+	ff->collection = CTFontCollectionCreateFromAvailableFonts(ff->options);
+	ff->fonts = CTFontCollectionCreateMatchingFontDescriptors(ff->collection);
+*/
+
+	ff->collection = [NSFontCollection fontCollectionWithAllAvailableDescriptors];
+	ff->fonts = [ff->collection matchingDescriptorsWithOptions:[NSDictionary
+		dictionaryWithObject:@YES		// TODO
+		forKey:NSFontCollectionRemoveDuplicatesOption]];
+
+	return ff;
+}
+
+uintmax_t uiDrawFontFamiliesNumFamilies(uiDrawFontFamilies *ff)
+{
+//	return CFArrayGetCount(ff->fonts);
+	return [ff->fonts count];
+}
+
+char *uiDrawFontFamiliesFamily(uiDrawFontFamilies *ff, uintmax_t n)
+{
+/*
+	CTFontDescriptorRef font;
+	CFStringRef familystr;
+	char *family;
+
+	font = (CTFontDescriptorRef) CFArrayGetValueAtIndex(ff->fonts, n);
+	familystr = (CFStringRef) CTFontDescriptorCopyAttribute(font, kCTFontFamilyNameAttribute);
+	// TODO create a uiDarwinCFStringToText()?
+	family = uiDarwinNSStringToText((NSString *) familystr);
+	CFRelease(familystr);
+	// Get Rule means we do not free font
+	return family;
+*/
+	NSFontDescriptor *desc;
+	NSString *familystr;
+	char *family;
+
+	desc = (NSFontDescriptor *) [ff->fonts objectAtIndex:n];
+	familystr = (NSString *) [desc objectForKey:NSFontFamilyAttribute];
+	family = uiDarwinNSStringToText(familystr);
+	// TODO release familystr and desc?
+	return family;
+}
+
+void uiDrawFreeFontFamilies(uiDrawFontFamilies *ff)
+{
+/*
+	CFRelease(ff->fonts);
+	// TODO is this correct?
+	CFRelease(ff->collection);
+	CFRelease(ff->options);
+	CFRelease(ff->one);
+*/
+//TODO	[ff->fonts release];
+//TODO	[ff->collection release];
+	uiFree(ff);
+}