[gegl] rotate: use the new more generic sub-classing infrastructure

[Øyvind Kolås <ok src gnome org>]

commit ca359feb2dfc5d9caf2a2c17dea0742053489e85
Author: Øyvind Kolås <pippin gimp org>
Date:   Fri Mar 3 09:55:08 2017 +0100

    rotate: use the new more generic sub-classing infrastructure

 operations/transform/module.c |    6 +++-
 operations/transform/rotate.c |   48 ++++++++++++++++++++++++++++++++--------
 2 files changed, 42 insertions(+), 12 deletions(-)
---
diff --git a/operations/transform/module.c b/operations/transform/module.c
index 6210d80..ad7c90a 100644
--- a/operations/transform/module.c
+++ b/operations/transform/module.c
@@ -39,7 +39,7 @@ gegl_module_query (GTypeModule *module)
   return &modinfo;
 }
 
-GType rotate_get_type      (void);
+GType gegl_op_rotate_register_type (GTypeModule *module);
 GType rotate_on_center_get_type (void);
 GType scale_ratio_get_type  (void);
 GType scale_size_get_type   (void);
@@ -49,6 +49,8 @@ GType translate_get_type   (void);
 GType reflect_get_type     (void);
 GType transform_get_type   (void);
 
+#include <stdio.h>
+
 G_MODULE_EXPORT gboolean
 gegl_module_register (GTypeModule *module)
 {
@@ -56,7 +58,6 @@ gegl_module_register (GTypeModule *module)
   transform_module = module;
 
   dummy = op_transform_get_type ();
-  dummy = rotate_get_type ();
   dummy = rotate_on_center_get_type ();
   dummy = scale_ratio_get_type ();
   dummy = scale_size_get_type ();
@@ -65,6 +66,7 @@ gegl_module_register (GTypeModule *module)
   dummy = translate_get_type ();
   dummy = reflect_get_type ();
   dummy = transform_get_type ();
+  dummy = gegl_op_rotate_register_type (module);
 
   dummy ++; /* silence gcc, having it is required to avoid optimizing
                away the _get_type calls themselves */
diff --git a/operations/transform/rotate.c b/operations/transform/rotate.c
index 269834f..5ccfe0a 100644
--- a/operations/transform/rotate.c
+++ b/operations/transform/rotate.c
@@ -14,23 +14,31 @@
  * License along with GEGL; if not, see <http://www.gnu.org/licenses/>.
  *
  * Copyright 2006 Philip Lafleur
+ *           2017 Øyvind Kolås
  */
 
 #include "config.h"
 #include <glib/gi18n-lib.h>
 
+#ifdef GEGL_PROPERTIES
 
-#ifdef GEGL_CHANT_PROPERTIES
-
-gegl_chant_double (degrees, -G_MAXDOUBLE, G_MAXDOUBLE, 0.0,
-                   _("Angle to rotate (counter-clockwise)"))
+property_double (degrees, _("Degrees"), 0.0)
+    description(_("Angle to rotate (counter-clockwise)"))
+    value_range (-720.0, 720.0)
+    ui_range (-180.0, 180.0)
 
 #else
 
-#define GEGL_CHANT_NAME rotate
-#define GEGL_CHANT_DESCRIPTION  _("Rotate the buffer around the specified origin.")
-#define GEGL_CHANT_SELF "rotate.c"
-#include "chant.h"
+#include "gegl-operation-filter.h"
+#include "transform-core.h"
+#define GEGL_OP_NO_SOURCE
+#define GEGL_OP_Parent  OpTransform
+#define GEGL_OP_PARENT  TYPE_OP_TRANSFORM
+#define GEGL_OP_NAME    rotate
+#define GEGL_OP_BUNDLE
+#define GEGL_OP_C_FILE  "rotate.c"
+
+#include "gegl-op.h"
 
 #include <math.h>
 
@@ -38,12 +46,32 @@ static void
 create_matrix (OpTransform *op,
                GeglMatrix3 *matrix)
 {
-  GeglChantOperation *chant = GEGL_CHANT_OPERATION (op);
-  double radians = chant->degrees * (2 * G_PI / 360.0);
+  GeglProperties *o = GEGL_PROPERTIES (op);
+  double radians = o->degrees * (2 * G_PI / 360.0);
 
   matrix->coeff [0][0] = matrix->coeff [1][1] = cos (radians);
   matrix->coeff [0][1] = sin (radians);
   matrix->coeff [1][0] = - matrix->coeff [0][1];
 }
 
+#include <stdio.h>
+
+static void
+gegl_op_class_init (GeglOpClass *klass)
+{
+  GeglOperationClass *operation_class;
+  OpTransformClass   *transform_class;
+
+  operation_class = GEGL_OPERATION_CLASS (klass);
+  transform_class = OP_TRANSFORM_CLASS (klass);
+  transform_class->create_matrix = create_matrix;
+
+  gegl_operation_class_set_keys (operation_class,
+    "name", "gegl:rotate",
+    "title", _("Rotate"),
+    "categories", "transform",
+    "description", _("Rotate the buffer around the specified origin."),
+    NULL);
+}
+
 #endif