[gimp] libgimpmath: make GimpVector[23] boxed types.

[Jehan <jehanp src gnome org>]

commit 3a4b17e8b58a2b3d21bb3b6ac6d5e1104d1d9256
Author: Jehan <jehan girinstud io>
Date:   Fri Aug 2 03:44:56 2019 +0200

    libgimpmath: make GimpVector[23] boxed types.
    
    This way, all functions using these types are now introspectable.

 libgimpmath/gimpmathtypes.h | 20 +++++++++++++++++
 libgimpmath/gimpvector.c    | 55 +++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 75 insertions(+)
---
diff --git a/libgimpmath/gimpmathtypes.h b/libgimpmath/gimpmathtypes.h
index a6f462892e..559f883047 100644
--- a/libgimpmath/gimpmathtypes.h
+++ b/libgimpmath/gimpmathtypes.h
@@ -81,6 +81,16 @@ struct _GimpVector2
   gdouble x, y;
 };
 
+/**
+ * GIMP_TYPE_VECTOR2:
+ *
+ * Boxed type representing a two-dimensional vector.
+ */
+#define GIMP_TYPE_VECTOR2 (gimp_vector2_get_type ())
+
+GType gimp_vector2_get_type (void) G_GNUC_CONST;
+
+
 /**
  * GimpVector3:
  * @x: the x axis
@@ -94,6 +104,16 @@ struct _GimpVector3
   gdouble x, y, z;
 };
 
+/**
+ * GIMP_TYPE_VECTOR3:
+ *
+ * Boxed type representing a three-dimensional vector.
+ */
+#define GIMP_TYPE_VECTOR3 (gimp_vector3_get_type ())
+
+GType gimp_vector3_get_type (void) G_GNUC_CONST;
+
+
 /**
  * GimpVector4:
  * @x: the x axis
diff --git a/libgimpmath/gimpvector.c b/libgimpmath/gimpvector.c
index 5f2b174ca1..d97622b624 100644
--- a/libgimpmath/gimpvector.c
+++ b/libgimpmath/gimpvector.c
@@ -43,6 +43,12 @@
  **/
 
 
+static gpointer  gimp_vector2_copy (gpointer boxed);
+static void      gimp_vector2_free (gpointer boxed);
+static gpointer  gimp_vector3_copy (gpointer boxed);
+static void      gimp_vector3_free (gpointer boxed);
+
+
 /*************************/
 /* Some useful constants */
 /*************************/
@@ -1127,3 +1133,52 @@ gimp_vector_3d_to_2d (gint               sx,
       *y = (gdouble) sy + (p->y * (gdouble) h);
     }
 }
+
+/* Private functions for boxed type. */
+
+static gpointer
+gimp_vector2_copy (gpointer boxed)
+{
+  GimpVector2 *vector = boxed;
+  GimpVector2 *new_v;
+
+  new_v = g_slice_new (GimpVector2);
+  new_v->x = vector->x;
+  new_v->y = vector->y;
+
+  return new_v;
+}
+
+static void
+gimp_vector2_free (gpointer boxed)
+{
+  g_slice_free (GimpVector2, boxed);
+}
+
+G_DEFINE_BOXED_TYPE (GimpVector2, gimp_vector2,
+                     gimp_vector2_copy,
+                     gimp_vector2_free)
+
+static gpointer
+gimp_vector3_copy (gpointer boxed)
+{
+  GimpVector3 *vector = boxed;
+  GimpVector3 *new_v;
+
+  new_v = g_slice_new (GimpVector3);
+  new_v->x = vector->x;
+  new_v->y = vector->y;
+  new_v->y = vector->z;
+
+  return new_v;
+}
+
+static void
+gimp_vector3_free (gpointer boxed)
+{
+  g_slice_free (GimpVector3, boxed);
+}
+
+G_DEFINE_BOXED_TYPE (GimpVector3, gimp_vector3,
+                     gimp_vector3_copy,
+                     gimp_vector3_free)