preserve fancy string list on a per-ui_box basis - do not rely on fancy *run* list for truncated-string-hover, as this will invalidly hold onto stale render handles (fixes crash on font resizes)

src/draw/draw.c

@@ -71,6 +71,19 @@ dr_fancy_string_list_concat_in_place(DR_FancyStringList *dst, DR_FancyStringList
   MemoryZeroStruct(to_push);
 }
 
+internal DR_FancyStringList
+dr_fancy_string_list_copy(Arena *arena, DR_FancyStringList *src)
+{
+  DR_FancyStringList dst = {0};
+  for(DR_FancyStringNode *src_n = src->first; src_n != 0; src_n = src_n->next)
+  {
+    DR_FancyString fstr = src_n->v;
+    fstr.string = push_str8_copy(arena, fstr.string);
+    dr_fancy_string_list_push(arena, &dst, &fstr);
+  }
+  return dst;
+}
+
 internal String8
 dr_string_from_fancy_string_list(Arena *arena, DR_FancyStringList *list)
 {

src/draw/draw.h

@@ -111,6 +111,7 @@ internal U64 dr_hash_from_string(String8 string);
 internal void dr_fancy_string_list_push(Arena *arena, DR_FancyStringList *list, DR_FancyString *str);
 #define dr_fancy_string_list_push_new(arena, list, font_, size_, color_, string_, ...) dr_fancy_string_list_push((arena), (list), &(DR_FancyString){.font = (font_), .string = (string_), .color = (color_), .size = (size_), __VA_ARGS__})
 internal void dr_fancy_string_list_concat_in_place(DR_FancyStringList *dst, DR_FancyStringList *to_push);
+internal DR_FancyStringList dr_fancy_string_list_copy(Arena *arena, DR_FancyStringList *src);
 internal String8 dr_string_from_fancy_string_list(Arena *arena, DR_FancyStringList *list);
 internal DR_FancyRunList dr_fancy_run_list_from_fancy_string_list(Arena *arena, F32 tab_size_px, FNT_RasterFlags flags, DR_FancyStringList *strs);
 internal DR_FancyRunList dr_fancy_run_list_copy(Arena *arena, DR_FancyRunList *src);