gegl r2599 - in trunk: . gegl operations/common

[ok svn gnome org]

Author: ok
Date: Sun Oct  5 21:04:39 2008
New Revision: 2599
URL: http://svn.gnome.org/viewvc/gegl?rev=2599&view=rev

Log:
* gegl/gegl-chant.h: improved handling of vectors.
* operations/common/fill.c: new operation to fill a vector.


Added:
   trunk/operations/common/fill.c
Modified:
   trunk/ChangeLog
   trunk/gegl/gegl-chant.h

Modified: trunk/gegl/gegl-chant.h
==============================================================================
--- trunk/gegl/gegl-chant.h	(original)
+++ trunk/gegl/gegl-chant.h	Sun Oct  5 21:04:39 2008
@@ -551,9 +551,13 @@
         {/*XXX: remove old signal */                                  \
          g_object_unref (properties->name);                           \
         }                                                             \
-      properties->name = g_value_dup_object (value);                  \
-      g_signal_connect (G_OBJECT (properties->name), "changed",       \
-       G_CALLBACK(gegl_operation_vector_prop_changed), gobject);      \
+      properties->name = NULL;                                        \
+      if (g_value_peek_pointer (value))                               \
+        {                                                             \
+          properties->name = g_value_dup_object (value);              \
+          g_signal_connect (G_OBJECT (properties->name), "changed",   \
+          G_CALLBACK(gegl_operation_vector_prop_changed), gobject);   \
+         }
       break; /*XXX*/
 
 #include GEGL_CHANT_C_FILE

Added: trunk/operations/common/fill.c
==============================================================================
--- (empty file)
+++ trunk/operations/common/fill.c	Sun Oct  5 21:04:39 2008
@@ -0,0 +1,102 @@
+/* This file is an image processing operation for GEGL
+ *
+ * GEGL is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 3 of the License, or (at your option) any later version.
+ *
+ * GEGL 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with GEGL; if not, see <http://www.gnu.org/licenses/>.
+ *
+ * Copyright 2006 Ãyvind KolÃs <pippin gimp org>
+ */
+
+
+#include "config.h"
+#include <glib/gi18n-lib.h>
+
+
+#ifdef GEGL_CHANT_PROPERTIES
+
+gegl_chant_vector (vector,   _("Vector"),
+                             _("A GeglVector representing the path of the fill"))
+gegl_chant_color  (color,    _("Color"),      "rgba(0.1,0.2,0.3,1.0)",
+                             _("Color of paint to use"))
+gegl_chant_boolean(winding,  _("Winding"),    TRUE,
+                             _("what kind of fill rule to use"))
+
+#else
+
+#define GEGL_CHANT_TYPE_SOURCE
+#define GEGL_CHANT_C_FILE "fill.c"
+
+#include "gegl-plugin.h"
+
+/* the vector api isn't public yet */
+#include "property-types/gegl-vector.h"
+
+#include "gegl-chant.h"
+
+static void
+prepare (GeglOperation *operation)
+{
+  gegl_operation_set_format (operation, "output", babl_format ("RGBA float"));
+}
+
+static GeglRectangle
+get_bounding_box (GeglOperation *operation)
+{
+  GeglChantO    *o       = GEGL_CHANT_PROPERTIES (operation);
+  GeglRectangle  defined = { 0, 0, 512, 512 };
+  gdouble        x0, x1, y0, y1;
+
+  gegl_vector_get_bounds (o->vector, &x0, &x1, &y0, &y1);
+  defined.x      = x0;
+  defined.y      = y0;
+  defined.width  = x1 - x0;
+  defined.height = y1 - y0;
+
+  return defined;
+}
+
+static gboolean
+process (GeglOperation       *operation,
+         GeglBuffer          *output,
+         const GeglRectangle *result)
+{
+  GeglChantO *o = GEGL_CHANT_PROPERTIES (operation);
+  GeglRectangle box = get_bounding_box (operation);
+
+  gegl_buffer_clear (output, &box);
+  gegl_vector_fill (output, o->vector, o->color, TRUE);
+
+  return  TRUE;
+}
+
+
+static void
+gegl_chant_class_init (GeglChantClass *klass)
+{
+  GeglOperationClass       *operation_class;
+  GeglOperationSourceClass *source_class;
+
+  operation_class = GEGL_OPERATION_CLASS (klass);
+  source_class    = GEGL_OPERATION_SOURCE_CLASS (klass);
+
+  source_class->process = process;
+  operation_class->get_bounding_box = get_bounding_box;
+  operation_class->prepare = prepare;
+
+  operation_class->name        = "fill";
+  operation_class->categories  = "render";
+  operation_class->description = _("Renders a fill of the provided GeglVector in a given color");
+  operation_class->get_cached_region = NULL;
+}
+
+
+#endif