From b6881c39bc02918a3ba6c6b64cf9fd570a6a5c9c Mon Sep 17 00:00:00 2001
From: Joshua Granick <jgranick@users.noreply.github.com>
Date: Tue, 22 Sep 2015 14:38:41 -0700
Subject: [PATCH] Improve Cairo bindings to hold a GC reference to Fonts used

---
 project/src/graphics/cairo/CairoBindings.cpp | 17 ++++++++++++++++-
 1 file changed, 16 insertions(+), 1 deletion(-)

diff --git a/project/src/graphics/cairo/CairoBindings.cpp b/project/src/graphics/cairo/CairoBindings.cpp
index 7af22176e..2c22a4fcd 100644
--- a/project/src/graphics/cairo/CairoBindings.cpp
+++ b/project/src/graphics/cairo/CairoBindings.cpp
@@ -9,6 +9,9 @@
 namespace lime {
 	
 	
+	cairo_user_data_key_t userData;
+	
+	
 	void gc_cairo (value handle) {
 		
 		if (!val_is_null (handle)) {
@@ -69,6 +72,14 @@ namespace lime {
 	}
 	
 	
+	void gc_user_data (void* data) {
+		
+		AutoGCRoot* reference = (AutoGCRoot*)data;
+		delete reference;
+		
+	}
+	
+	
 	void lime_cairo_arc (value handle, double xc, double yc, double radius, double angle1, double angle2) {
 		
 		cairo_arc ((cairo_t*)val_data (handle), xc, yc, radius, angle1, angle2);
@@ -231,8 +242,12 @@ namespace lime {
 	value lime_cairo_ft_font_face_create (value face, int flags) {
 		
 		#ifdef LIME_FREETYPE
-		Font *font = (Font*)val_data (face);
+		Font* font = (Font*)val_data (face);
 		cairo_font_face_t* cairoFont = cairo_ft_font_face_create_for_ft_face ((FT_Face)font->face, flags);
+		
+		AutoGCRoot* fontReference = new AutoGCRoot (face);
+		cairo_font_face_set_user_data (cairoFont, &userData, fontReference, gc_user_data);
+		
 		value handle = cffi::alloc_pointer (cairoFont);
 		val_gc (handle, gc_cairo_font_face);
 		return handle;