From 246039fd056bcec1abc12c8aa7e42d0686ad0fc2 Mon Sep 17 00:00:00 2001
From: Miguel de Icaza <miguel@gnome.org>
Date: Sun, 3 Jul 2016 00:27:23 -0400
Subject: [PATCH] [C API] Add SkPath APIs to add sub-paths

---
 include/c/xamarin/sk_x_path.h  | 10 +++++++++-
 include/c/xamarin/sk_x_types.h |  5 +++++
 src/c/xamarin/sk_x_path.cpp    | 29 +++++++++++++++++++++++++++++
 3 files changed, 43 insertions(+), 1 deletion(-)

diff --git a/include/c/xamarin/sk_x_path.h b/include/c/xamarin/sk_x_path.h
index d8363ade3b..7469ef4ce9 100644
--- a/include/c/xamarin/sk_x_path.h
+++ b/include/c/xamarin/sk_x_path.h
@@ -85,7 +85,15 @@ SK_API float sk_path_iter_conic_weight (sk_path_iterator_t *iterator);
 SK_API int sk_path_iter_is_close_line (sk_path_iterator_t *iterator);
 
 SK_API int sk_path_iter_is_closed_contour (sk_path_iterator_t *iterator);
-       
+
+
+/* Paths */
+
+SK_API void sk_path_add_path_offset  (sk_path_t* cpath, sk_path_t* other, float dx, float dy, sk_path_add_mode_t add_mode);
+SK_API void sk_path_add_path_matrix  (sk_path_t* cpath, sk_path_t* other, sk_matrix_t *matrix, sk_path_add_mode_t add_mode);
+SK_API void sk_path_add_path         (sk_path_t* cpath, sk_path_t* other, sk_path_add_mode_t add_mode);
+SK_API void sk_path_add_path_reverse (sk_path_t* cpath, sk_path_t* other);
+
 SK_C_PLUS_PLUS_END_GUARD
 
 #endif
diff --git a/include/c/xamarin/sk_x_types.h b/include/c/xamarin/sk_x_types.h
index e3a9c69ff5..aeaff9acab 100644
--- a/include/c/xamarin/sk_x_types.h
+++ b/include/c/xamarin/sk_x_types.h
@@ -235,6 +235,11 @@ typedef enum {
 
 typedef struct sk_path_iterator_t sk_path_iterator_t;
 
+typedef enum {
+	APPEND_ADD_MODE,
+	EXTEND_ADD_MODE,
+} sk_path_add_mode_t;
+	
 SK_C_PLUS_PLUS_END_GUARD
 
 #endif
diff --git a/src/c/xamarin/sk_x_path.cpp b/src/c/xamarin/sk_x_path.cpp
index c36d2d1531..e753c6e077 100644
--- a/src/c/xamarin/sk_x_path.cpp
+++ b/src/c/xamarin/sk_x_path.cpp
@@ -122,3 +122,32 @@ int sk_path_iter_is_closed_contour (sk_path_iterator_t *iterator)
 {
     return AsPathIter(iterator)->isClosedContour ();
 }
+
+#if __cplusplus >= 199711L
+static_assert (SkPath::kAppend_AddPathMode == APPEND_ADD_MODE, "ABI changed, you must write a enumeration mapper for SkPath::AddPathMode to sk_path_add_mode_t");
+static_assert (SkPath::kExtend_AddPathMode == EXTEND_ADD_MODE, "ABI changed, you must write a enumeration mapper for SkPath::AddPathMode to sk_path_add_mode_t");
+#endif
+
+void sk_path_add_path_offset (sk_path_t* cpath, sk_path_t* other, float dx, float dy, sk_path_add_mode_t add_mode)
+{
+    as_path (cpath)->addPath (AsPath (*other), dx, dy, (SkPath::AddPathMode) add_mode);
+}
+
+void sk_path_add_path_matrix (sk_path_t* cpath, sk_path_t* other, sk_matrix_t *matrix, sk_path_add_mode_t add_mode)
+{
+    SkMatrix skmatrix;
+    from_c(matrix, &skmatrix);
+    as_path (cpath)->addPath (AsPath (*other), skmatrix, (SkPath::AddPathMode) add_mode);
+}
+
+void sk_path_add_path (sk_path_t* cpath, sk_path_t* other, sk_path_add_mode_t add_mode)
+{
+    as_path (cpath)->addPath (AsPath (*other), (SkPath::AddPathMode) add_mode);
+}
+
+void sk_path_add_path_reverse (sk_path_t* cpath, sk_path_t* other)
+{
+    as_path (cpath)->reverseAddPath (AsPath (*other));
+}
+
+
-- 
2.34.1