* Add gmathboxed_find_symbol to recursively find the boxed for a symbol

2 files changed, 28 insertions, 0 deletions

diff --git a/cairo/gmathboxed.c b/cairo/gmathboxed.c
index 4d8cdc7..e1a3395 100644
--- a/cairo/gmathboxed.c
+++ b/cairo/gmathboxed.c
@@ -180,3 +180,29 @@ gmathboxed_find_smallest_container (GMathBoxed *boxed,
 
     return boxed;
 }
+
+/* Find the boxed struct for a given symbol */
+GMathBoxed*
+gmathboxed_find_symbol (GMathBoxed *boxed, GMathSymbol *symbol)
+{
+    GMathBoxed *child, *temp;
+    GSList     *list;
+
+    if (!boxed || !symbol)
+        return NULL;
+
+    if (boxed->symbol == symbol)
+        return boxed;
+
+    list = boxed->children;
+    while (list)
+    {
+        child = (GMathBoxed *) list->data;
+        temp = gmathboxed_find_symbol (child, symbol);
+        if (temp)
+            return temp;
+        list = list->next;
+    }
+
+    return NULL;
+}
diff --git a/include/gmathcairo.h b/include/gmathcairo.h
index 34556af..8017ef1 100644
--- a/include/gmathcairo.h
+++ b/include/gmathcairo.h
@@ -173,6 +173,8 @@ GMathBoxed*
 gmathboxed_find_smallest_container (GMathBoxed *boxed,
                                     int x, int y, int width, int height);
 
+GMathBoxed*
+gmathboxed_find_symbol (GMathBoxed *boxed, GMathSymbol *symbol);
 
 /* Internal methods */
 void