[ft-devel] does the face cache really work ?

[Anstinus Anstinus]

I find that the function  ftc_face_node_compare() use " return FT_BOOL( 
node->face_id == face_id );" to determine whether a node exists in the MRU 
list.

But the face_id is just a pointer, then if I write the following code, it 
will not work as I expect:

************* code begin **************
typedef struct

{

        const char * file_path;

} My_FaceID_Rec, *My_FaceID;

...


FT_Face ftFace1, ftFace2;

My_FaceID_Rec faceID;

faceID.file_path = "font1.ttf";
FTC_Manager_LookupFace(GetCacheManager(), (FTC_FaceID) &faceID, &ftFace1);
faceID.file_path = "font2.ttf";
FTC_Manager_LookupFace(GetCacheManager(), (FTC_FaceID) &faceID, &ftFace2);

************* code end **************

The ftFace1 and ftFace2 will have the same value!

If I use malloc() to create My_FaceID_Rec, the face_id in each node will 
have different values, that is to say, each time I lookup a face, the cache 
will create a new node for me!.

The situation is that each My_FaceID_Rec object is associated with a face in 
cache. Then if I want to make the face cache run properly, I have to cache 
the My_FaceID_Rec objects at first!

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