[cogl] Add cogl_primitive_foreach_attribute()
- From: Neil Roberts <nroberts src gnome org>
- To: commits-list gnome org
- Cc:
- Subject: [cogl] Add cogl_primitive_foreach_attribute()
- Date: Tue, 7 Feb 2012 15:30:22 +0000 (UTC)
commit 354e923cbfa7df31521f8289e96f7ef57cef798d
Author: Neil Roberts <neil linux intel com>
Date: Mon Feb 6 13:29:35 2012 +0000
Add cogl_primitive_foreach_attribute()
This adds a public function to iterate the attributes of a
CoglPrimitive. Previously there was no way to query back the
attributes but there was methods to query back all of the other
properties.
Reviewed-by: Robert Bragg <robert linux intel com>
cogl/cogl-primitive.c | 12 +++++++
cogl/cogl-primitive.h | 35 ++++++++++++++++++++
.../cogl-2.0-experimental-sections.txt | 2 +
3 files changed, 49 insertions(+), 0 deletions(-)
---
diff --git a/cogl/cogl-primitive.c b/cogl/cogl-primitive.c
index 10983cd..6fa9a9d 100644
--- a/cogl/cogl-primitive.c
+++ b/cogl/cogl-primitive.c
@@ -596,3 +596,15 @@ cogl_primitive_draw (CoglPrimitive *primitive)
{
_cogl_primitive_draw (primitive, 0 /* no flags */);
}
+
+void
+cogl_primitive_foreach_attribute (CoglPrimitive *primitive,
+ CoglPrimitiveAttributeCallback callback,
+ void *user_data)
+{
+ int i;
+
+ for (i = 0; i < primitive->n_attributes; i++)
+ if (!callback (primitive, primitive->attributes[i], user_data))
+ break;
+}
diff --git a/cogl/cogl-primitive.h b/cogl/cogl-primitive.h
index 62293ab..debaba1 100644
--- a/cogl/cogl-primitive.h
+++ b/cogl/cogl-primitive.h
@@ -816,6 +816,41 @@ cogl_primitive_draw (CoglPrimitive *primitive);
gboolean
cogl_is_primitive (void *object);
+/**
+ * CoglPrimitiveAttributeCallback:
+ * @primitive: The #CoglPrimitive whose attributes are being iterated
+ * @attribute: The #CoglAttribute
+ * @user_data: The private data passed to cogl_primitive_foreach_attribute()
+ *
+ * The callback prototype used with cogl_primitive_foreach_attribute()
+ * for iterating all the attributes of a #CoglPrimitive.
+ *
+ * The function should return TRUE to continue iteration or FALSE to
+ * stop.
+ *
+ * Since: 1.10
+ * Stability: Unstable
+ */
+typedef gboolean (* CoglPrimitiveAttributeCallback) (CoglPrimitive *primitive,
+ CoglAttribute *attribute,
+ void *user_data);
+
+/**
+ * cogl_primitive_foreach_attribute:
+ * @primitive: A #CoglPrimitive object
+ * @callback: A #CoglPrimitiveAttributeCallback to be called for each attribute
+ * @user_data: Private data that will be passed to the callback
+ *
+ * Iterates all the attributes of the given #CoglPrimitive.
+ *
+ * Since: 1.10
+ * Stability: Unstable
+ */
+void
+cogl_primitive_foreach_attribute (CoglPrimitive *primitive,
+ CoglPrimitiveAttributeCallback callback,
+ void *user_data);
+
G_END_DECLS
#endif /* __COGL_PRIMITIVE_H__ */
diff --git a/doc/reference/cogl-2.0-experimental/cogl-2.0-experimental-sections.txt b/doc/reference/cogl-2.0-experimental/cogl-2.0-experimental-sections.txt
index c6f0c2b..d338d85 100644
--- a/doc/reference/cogl-2.0-experimental/cogl-2.0-experimental-sections.txt
+++ b/doc/reference/cogl-2.0-experimental/cogl-2.0-experimental-sections.txt
@@ -238,6 +238,8 @@ cogl_primitive_set_attributes
cogl_primitive_set_indices
cogl_primitive_draw
cogl_primitive_copy
+CoglPrimitiveAttributeCallback
+cogl_primitive_foreach_attribute
</SECTION>
<SECTION>
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