1 files changed, 118 insertions, 0 deletions
diff --git a/app/operations/gimpoperationcurves.c b/app/operations/gimpoperationcurves.c
new file mode 100644
index 0000000..e83b142
--- /dev/null
+++ b/app/operations/gimpoperationcurves.c
@@ -0,0 +1,118 @@
+/* GIMP - The GNU Image Manipulation Program
+ * Copyright (C) 1995 Spencer Kimball and Peter Mattis
+ *
+ * gimpoperationcurves.c
+ * Copyright (C) 2007 Michael Natterer <mitch@gimp.org>
+ *
+ * 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 <https://www.gnu.org/licenses/>.
+ */
+
+#include "config.h"
+
+#include <cairo.h>
+#include <gdk-pixbuf/gdk-pixbuf.h>
+#include <gegl.h>
+
+#include "libgimpmath/gimpmath.h"
+
+#include "operations-types.h"
+
+#include "core/gimpcurve.h"
+#include "core/gimpcurve-map.h"
+
+#include "gimpcurvesconfig.h"
+#include "gimpoperationcurves.h"
+
+#include "gimp-intl.h"
+
+
+static gboolean gimp_operation_curves_process (GeglOperation       *operation,
+                                               void                *in_buf,
+                                               void                *out_buf,
+                                               glong                samples,
+                                               const GeglRectangle *roi,
+                                               gint                 level);
+
+
+G_DEFINE_TYPE (GimpOperationCurves, gimp_operation_curves,
+               GIMP_TYPE_OPERATION_POINT_FILTER)
+
+#define parent_class gimp_operation_curves_parent_class
+
+
+static void
+gimp_operation_curves_class_init (GimpOperationCurvesClass *klass)
+{
+  GObjectClass                  *object_class    = G_OBJECT_CLASS (klass);
+  GeglOperationClass            *operation_class = GEGL_OPERATION_CLASS (klass);
+  GeglOperationPointFilterClass *point_class     = GEGL_OPERATION_POINT_FILTER_CLASS (klass);
+
+  object_class->set_property   = gimp_operation_point_filter_set_property;
+  object_class->get_property   = gimp_operation_point_filter_get_property;
+
+  gegl_operation_class_set_keys (operation_class,
+                                 "name",        "gimp:curves",
+                                 "categories",  "color",
+                                 "description", _("Adjust color curves"),
+                                 NULL);
+
+  point_class->process = gimp_operation_curves_process;
+
+  g_object_class_install_property (object_class,
+                                   GIMP_OPERATION_POINT_FILTER_PROP_LINEAR,
+                                   g_param_spec_boolean ("linear",
+                                                         "Linear",
+                                                         "Whether to operate on linear RGB",
+                                                         FALSE,
+                                                         G_PARAM_READWRITE));
+
+  g_object_class_install_property (object_class,
+                                   GIMP_OPERATION_POINT_FILTER_PROP_CONFIG,
+                                   g_param_spec_object ("config",
+                                                        "Config",
+                                                        "The config object",
+                                                        GIMP_TYPE_CURVES_CONFIG,
+                                                        G_PARAM_READWRITE |
+                                                        G_PARAM_CONSTRUCT));
+}
+
+static void
+gimp_operation_curves_init (GimpOperationCurves *self)
+{
+}
+
+static gboolean
+gimp_operation_curves_process (GeglOperation       *operation,
+                               void                *in_buf,
+                               void                *out_buf,
+                               glong                samples,
+                               const GeglRectangle *roi,
+                               gint                 level)
+{
+  GimpOperationPointFilter *point  = GIMP_OPERATION_POINT_FILTER (operation);
+  GimpCurvesConfig         *config = GIMP_CURVES_CONFIG (point->config);
+  gfloat                   *src    = in_buf;
+  gfloat                   *dest   = out_buf;
+
+  if (! config)
+    return FALSE;
+
+  gimp_curve_map_pixels (config->curve[0],
+                         config->curve[1],
+                         config->curve[2],
+                         config->curve[3],
+                         config->curve[4], src, dest, samples);
+
+  return TRUE;
+}