[gimp/warp-wip-rebased: 12/56] add boilerplate for a GimpWarp Gegl operator

[Michael Natterer <mitch src gnome org>]

commit 56a17ef52c0a1e98a45412e1e2e4113eb007c52a
Author: Michael Muré <batolettre gmail com>
Date:   Sat Jun 4 02:21:39 2011 +0200

    add boilerplate for a GimpWarp Gegl operator

 app/gegl/gimpoperationwarp.c      |  154 +++++++++++++++++++++++++++++++++++++
 app/gegl/gimpoperationwarp.h      |   52 +++++++++++++
 app/operations/Makefile.am        |    2 +
 app/operations/operations-types.h |    1 +
 4 files changed, 209 insertions(+), 0 deletions(-)
---
diff --git a/app/gegl/gimpoperationwarp.c b/app/gegl/gimpoperationwarp.c
new file mode 100644
index 0000000..0fed2d3
--- /dev/null
+++ b/app/gegl/gimpoperationwarp.c
@@ -0,0 +1,154 @@
+/* GIMP - The GNU Image Manipulation Program
+ *
+ * gimpoperationwarp.c
+ * Copyright (C) 2011 Michael Muré <batolettre gmail com>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "config.h"
+
+#include <gegl.h>
+#include <gegl-buffer-iterator.h>
+
+#include "libgimpmath/gimpmath.h"
+
+#include "gimp-gegl-types.h"
+
+#include "gimpoperationwarp.h"
+
+
+enum
+{
+  PROP_0
+};
+
+
+static void         gimp_operation_warp_finalize                (GObject             *object);
+static void         gimp_operation_warp_get_property            (GObject             *object,
+                                                                 guint                property_id,
+                                                                 GValue              *value,
+                                                                 GParamSpec          *pspec);
+static void         gimp_operation_warp_set_property            (GObject             *object,
+                                                                 guint                property_id,
+                                                                 const GValue        *value,
+                                                                 GParamSpec          *pspec);
+static void         gimp_operation_warp_prepare                 (GeglOperation       *operation);
+static gboolean     gimp_operation_warp_process                 (GeglOperation       *operation,
+                                                                 GeglBuffer          *in_buf,
+                                                                 GeglBuffer          *out_buf,
+                                                                 const GeglRectangle *roi);
+GeglRectangle       gimp_operation_warp_get_bounding_box        (GeglOperation       *operation);
+
+
+G_DEFINE_TYPE (GimpOperationWarp, gimp_operation_warp,
+                      GEGL_TYPE_OPERATION_FILTER)
+
+#define parent_class gimp_operation_warp_parent_class
+
+
+static void
+gimp_operation_warp_class_init (GimpOperationWarpClass *klass)
+{
+  GObjectClass               *object_class    = G_OBJECT_CLASS (klass);
+  GeglOperationClass         *operation_class = GEGL_OPERATION_CLASS (klass);
+  GeglOperationFilterClass   *filter_class    = GEGL_OPERATION_FILTER_CLASS (klass);
+
+  object_class->get_property               = gimp_operation_warp_get_property;
+  object_class->set_property               = gimp_operation_warp_set_property;
+  object_class->finalize                   = gimp_operation_warp_finalize;
+
+  operation_class->name                    = "gimp:warp";
+  operation_class->categories              = "transform";
+  operation_class->description             = "GIMP warp";
+
+  operation_class->prepare                 = gimp_operation_warp_prepare;
+  operation_class->get_bounding_box        = gimp_operation_warp_get_bounding_box;
+
+  filter_class->process                    = gimp_operation_warp_process;
+}
+
+static void
+gimp_operation_warp_init (GimpOperationWarp *self)
+{
+}
+
+static void
+gimp_operation_warp_finalize (GObject *object)
+{
+  GimpOperationWarp *self = GIMP_OPERATION_WARP (object);
+
+  G_OBJECT_CLASS (parent_class)->finalize (object);
+}
+
+static void
+gimp_operation_warp_get_property (GObject    *object,
+                                  guint       property_id,
+                                  GValue     *value,
+                                  GParamSpec *pspec)
+{
+  GimpOperationWarp *self = GIMP_OPERATION_WARP (object);
+
+  switch (property_id)
+    {
+
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
+      break;
+    }
+}
+
+static void
+gimp_operation_warp_set_property (GObject      *object,
+                                  guint         property_id,
+                                  const GValue *value,
+                                  GParamSpec   *pspec)
+{
+  GimpOperationWarp *self = GIMP_OPERATION_WARP (object);
+
+  switch (property_id)
+    {
+
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
+      break;
+    }
+}
+
+static void
+gimp_operation_warp_prepare (GeglOperation *operation)
+{
+  gegl_operation_set_format (operation, "input", babl_format ("RGBA float"));
+  gegl_operation_set_format (operation, "output", babl_format ("RGBA float"));
+}
+
+static gboolean
+gimp_operation_warp_process (GeglOperation       *operation,
+                             GeglBuffer          *in_buf,
+                             GeglBuffer          *out_buf,
+                             const GeglRectangle *roi)
+{
+  GimpOperationWarp *ow    = GIMP_OPERATION_WARP (operation);
+
+  return TRUE;
+}
+
+GeglRectangle
+gimp_operation_warp_get_bounding_box (GeglOperation *operation)
+{
+  GeglRectangle result = *gegl_operation_source_get_bounding_box (operation,
+                                                                  "input");
+
+  return result;
+}
diff --git a/app/gegl/gimpoperationwarp.h b/app/gegl/gimpoperationwarp.h
new file mode 100644
index 0000000..e48f066
--- /dev/null
+++ b/app/gegl/gimpoperationwarp.h
@@ -0,0 +1,52 @@
+/* GIMP - The GNU Image Manipulation Program
+ *
+ * gimpoperationwarp.h
+ * Copyright (C) 2011 Michael Muré <batolettre gmail com>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef __GIMP_OPERATION_WARP_H__
+#define __GIMP_OPERATION_WARP_H__
+
+
+#include <gegl-plugin.h>
+#include <operation/gegl-operation-filter.h>
+
+
+#define GIMP_TYPE_OPERATION_WARP            (gimp_operation_warp_get_type ())
+#define GIMP_OPERATION_WARP(obj)            (G_TYPE_CHECK_INSTANCE_CAST ((obj), GIMP_TYPE_OPERATION_WARP, 
GimpOperationWarp))
+#define GIMP_OPERATION_WARP_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST ((klass),  GIMP_TYPE_OPERATION_WARP, 
GimpOperationWarpClass))
+#define GIMP_IS_OPERATION_WARP(obj)         (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GIMP_TYPE_OPERATION_WARP))
+#define GIMP_IS_OPERATION_WARP_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass),  GIMP_TYPE_OPERATION_WARP))
+#define GIMP_OPERATION_WARP_GET_CLASS(obj)  (G_TYPE_INSTANCE_GET_CLASS ((obj),  GIMP_TYPE_OPERATION_WARP, 
GimpOperationWarpClass))
+
+
+typedef struct _GimpOperationWarpClass GimpOperationWarpClass;
+
+struct _GimpOperationWarp
+{
+  GeglOperationFilter  parent_instance;
+};
+
+struct _GimpOperationWarpClass
+{
+  GeglOperationFilterClass  parent_class;
+};
+
+
+GType   gimp_operation_warp_get_type (void) G_GNUC_CONST;
+
+
+#endif /* __GIMP_OPERATION_WARP_H__ */
diff --git a/app/operations/Makefile.am b/app/operations/Makefile.am
index 59b8b3a..6ef761a 100644
--- a/app/operations/Makefile.am
+++ b/app/operations/Makefile.am
@@ -66,6 +66,8 @@ libappoperations_a_sources = \
        gimpoperationshrink.h                   \
        gimpoperationthresholdalpha.c           \
        gimpoperationthresholdalpha.h           \
+       gimpoperationwarp.c                     \
+       gimpoperationwarp.h                     \
        \
        gimpoperationpointfilter.c              \
        gimpoperationpointfilter.h              \
diff --git a/app/operations/operations-types.h b/app/operations/operations-types.h
index 89f9045..487e8a1 100644
--- a/app/operations/operations-types.h
+++ b/app/operations/operations-types.h
@@ -28,6 +28,7 @@
 
 typedef struct _GimpOperationPointFilter        GimpOperationPointFilter;
 typedef struct _GimpOperationPointLayerMode     GimpOperationPointLayerMode;
+typedef struct _GimpOperationWarp               GimpOperationWarp;
 
 
 /*  operation config objects  */