gegl r2635 - in trunk: . operations/common operations/external

[ok svn gnome org]

Author: ok
Date: Sat Oct 18 20:15:51 2008
New Revision: 2635
URL: http://svn.gnome.org/viewvc/gegl?rev=2635&view=rev

Log:
* operations/common/fill.c: moved
* operations/external/fill.c: .. here and made it render using cairo.
* operations/external/Makefile.am: added fill.c's dependencies.


Added:
   trunk/operations/external/fill.c
Removed:
   trunk/operations/common/fill.c
Modified:
   trunk/ChangeLog
   trunk/operations/external/Makefile.am

Modified: trunk/operations/external/Makefile.am
==============================================================================
--- trunk/operations/external/Makefile.am	(original)
+++ trunk/operations/external/Makefile.am	Sat Oct 18 20:15:51 2008
@@ -11,6 +11,13 @@
 ops += text.la
 endif
 
+if HAVE_CAIRO
+fill_la_SOURCES = fill.c
+fill_la_LIBADD = $(op_libs) $(CAIRO_LIBS)
+fill_la_CFLAGS = $(CAIRO_CFLAGS)
+ops += fill.la
+endif
+
 if HAVE_PNG
 ops += png-load.la png-save.la
 png_load_la_SOURCES = png-load.c

Added: trunk/operations/external/fill.c
==============================================================================
--- (empty file)
+++ trunk/operations/external/fill.c	Sat Oct 18 20:15:51 2008
@@ -0,0 +1,148 @@
+/* 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"
+#include <cairo/cairo.h>
+
+static void
+prepare (GeglOperation *operation)
+{
+  gegl_operation_set_format (operation, "output", babl_format ("B'aG'aR'aA u8"));
+}
+
+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 void foreach_cairo (const GeglVectorKnot *knot,
+                           gpointer              cr)
+{
+  switch (knot->type)
+    {
+      case 'M':
+        cairo_move_to (cr, knot->point[0].x, knot->point[0].y);
+        break;
+      case 'L':
+        cairo_line_to (cr, knot->point[0].x, knot->point[0].y);
+        break;
+      case 'C':
+        cairo_curve_to (cr, knot->point[0].x, knot->point[0].y,
+                            knot->point[1].x, knot->point[1].y,
+                            knot->point[2].x, knot->point[2].y);
+        break;
+      case 'z':
+        cairo_close_path (cr);
+        break;
+      default:
+        g_print ("%s uh?:%c\n", G_STRLOC, knot->type);
+    }
+}
+
+static void gegl_vector_cairo_play (GeglVector *vector,
+                                    cairo_t *cr)
+{
+  gegl_vector_flat_knot_foreach (vector, foreach_cairo, cr);
+}
+
+static gboolean
+process (GeglOperation       *operation,
+         GeglBuffer          *output,
+         const GeglRectangle *result)
+{
+  GeglChantO *o = GEGL_CHANT_PROPERTIES (operation);
+  cairo_t *cr;
+  cairo_surface_t *surface;
+  gfloat r,g,b,a;
+  guchar *data = (void*)gegl_buffer_linear_open (output, result, NULL, babl_format ("B'aG'aR'aA u8"));
+
+  surface = cairo_image_surface_create_for_data (data,
+                                                 CAIRO_FORMAT_ARGB32,
+                                                 result->width,
+                                                 result->height,
+                                                 result->width * 4);
+  memset (data, 0, result->width * result->height * 4);
+  cr = cairo_create (surface);
+  cairo_translate (cr, -result->x, -result->y);
+
+  gegl_vector_cairo_play (o->vector, cr);
+  gegl_color_get_rgba (o->color, &r,&g,&b,&a);
+  cairo_set_source_rgba (cr, r,g,b,a);
+  cairo_fill (cr);
+  gegl_buffer_linear_close (output, data);
+  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        = "gegl:fill";
+  operation_class->categories  = "render";
+  operation_class->description = _("Renders a fill of the provided GeglVector in a given color");
+
+ /* operation_class->get_cached_region = get_cached_region;*/
+}
+
+
+#endif