[gimp/blend-tool-fun: 7/9] app: Place shapeburst buffers at the right offset.

[Michael Henning <mhenning src gnome org>]

commit b5c460490e3b0b1beecd6526a0f16ce1a730b494
Author: Michael Henning <drawoc darkrefraction com>
Date:   Mon May 11 21:41:16 2015 -0400

    app: Place shapeburst buffers at the right offset.

 app/core/gimpdrawable-blend.c |   21 ++++++---------------
 app/tools/gimpblendtool.c     |   36 ++++++++++--------------------------
 app/tools/gimpblendtool.h     |    2 --
 3 files changed, 16 insertions(+), 43 deletions(-)
---
diff --git a/app/core/gimpdrawable-blend.c b/app/core/gimpdrawable-blend.c
index 01002ef..a59ea1f 100644
--- a/app/core/gimpdrawable-blend.c
+++ b/app/core/gimpdrawable-blend.c
@@ -544,15 +544,11 @@ gimp_drawable_blend_shapeburst_distmap (GimpDrawable        *drawable,
     gimp_progress_set_text_literal (progress, _("Calculating distance map"));
 
   /*  allocate the distance map  */
-  dist_buffer = gegl_buffer_new (GEGL_RECTANGLE (0, 0,
-                                                 region->width, region->height),
-                                 babl_format ("Y float"));
+  dist_buffer = gegl_buffer_new (region, babl_format ("Y float"));
 
   /*  allocate the selection mask copy
    */
-  temp_buffer = gegl_buffer_new (GEGL_RECTANGLE (0, 0,
-                                                 region->width, region->height),
-                                 babl_format ("Y float"));
+  temp_buffer = gegl_buffer_new (region, babl_format ("Y float"));
 
   mask = gimp_image_get_mask (image);
 
@@ -568,9 +564,7 @@ gimp_drawable_blend_shapeburst_distmap (GimpDrawable        *drawable,
       /*  copy the mask to the temp mask  */
       gegl_buffer_copy (gimp_drawable_get_buffer (GIMP_DRAWABLE (mask)),
                         GEGL_RECTANGLE (x + off_x, y + off_y, width, height),
-                        GEGL_ABYSS_NONE,
-                        temp_buffer,
-                        GEGL_RECTANGLE (0, 0, 0, 0));
+                        GEGL_ABYSS_NONE, temp_buffer, region);
     }
   else
     {
@@ -583,12 +577,9 @@ gimp_drawable_blend_shapeburst_distmap (GimpDrawable        *drawable,
 
           /*  extract the aplha into the temp mask  */
           gegl_buffer_set_format (temp_buffer, component_format);
-          gegl_buffer_copy (gimp_drawable_get_buffer (drawable),
-                            GEGL_RECTANGLE (region->x, region->y,
-                                            region->width, region->height),
+          gegl_buffer_copy (gimp_drawable_get_buffer (drawable), region,
                             GEGL_ABYSS_NONE,
-                            temp_buffer,
-                            GEGL_RECTANGLE (0, 0, 0, 0));
+                            temp_buffer, region);
           gegl_buffer_set_format (temp_buffer, NULL);
         }
       else
@@ -617,7 +608,7 @@ gimp_drawable_blend_shapeburst_distmap (GimpDrawable        *drawable,
 
   gimp_gegl_apply_operation (temp_buffer, NULL, NULL,
                              shapeburst,
-                             dist_buffer, NULL);
+                             dist_buffer, region);
 
   g_object_unref (shapeburst);
 
diff --git a/app/tools/gimpblendtool.c b/app/tools/gimpblendtool.c
index 86a1453..895c59e 100644
--- a/app/tools/gimpblendtool.c
+++ b/app/tools/gimpblendtool.c
@@ -827,7 +827,6 @@ gimp_blend_tool_halt_preview (GimpBlendTool *blend_tool)
       blend_tool->subtract_node  = NULL;
       blend_tool->divide_node    = NULL;
       blend_tool->dist_node      = NULL;
-      blend_tool->translate_node = NULL;
     }
 
   if (blend_tool->dist_buffer)
@@ -940,23 +939,15 @@ gimp_blend_tool_precalc_shapeburst (GimpBlendTool *blend_tool)
     return;
 
   buf = gimp_drawable_blend_shapeburst_distmap (drawable, FALSE,
-                                                GEGL_RECTANGLE (0, 0, width, height),
+                                                GEGL_RECTANGLE (x, y, width, height),
                                                 GIMP_PROGRESS (blend_tool));
 
   blend_tool->dist_buffer = buf;
-  blend_tool->dist_buffer_off_x = x;
-  blend_tool->dist_buffer_off_y = y;
 
   if (blend_tool->dist_node)
     gegl_node_set (blend_tool->dist_node,
                    "buffer", blend_tool->dist_buffer,
                    NULL);
-
-  if (blend_tool->translate_node)
-    gegl_node_set (blend_tool->translate_node,
-                   "x", (gdouble) blend_tool->dist_buffer_off_x,
-                   "y", (gdouble) blend_tool->dist_buffer_off_y,
-                   NULL);
 }
 
 /* gegl graph stuff */
@@ -966,7 +957,7 @@ gimp_blend_tool_create_graph (GimpBlendTool *blend_tool)
 {
   GimpBlendOptions *options = GIMP_BLEND_TOOL_GET_OPTIONS (blend_tool);
   GimpContext      *context = GIMP_CONTEXT (options);
-  GeglNode         *graph, *output, *render, *shapeburst, *translate, *subtract, *divide;
+  GeglNode         *graph, *output, *render, *shapeburst, *subtract, *divide;
 
   /* render_node is not supposed to be recreated */
   g_return_if_fail (blend_tool->graph == NULL);
@@ -981,26 +972,19 @@ gimp_blend_tool_create_graph (GimpBlendTool *blend_tool)
                                 "context", context,
                                 NULL);
 
-  translate = gegl_node_new_child (graph, "operation", "gegl:translate",
-                                   "x", (gdouble) blend_tool->dist_buffer_off_x,
-                                   "y", (gdouble) blend_tool->dist_buffer_off_y,
-                                   NULL);
-
   subtract = gegl_node_new_child (graph, "operation", "gegl:subtract", NULL);
   divide = gegl_node_new_child (graph, "operation", "gegl:divide", NULL);
 
   shapeburst = gegl_node_new_child (graph, "operation", "gegl:buffer-source",
                                     "buffer", blend_tool->dist_buffer, NULL);
 
-  gegl_node_link_many (shapeburst, translate, subtract, divide,
-                       render, output, NULL);
+  gegl_node_link_many (shapeburst, subtract, divide, render, output, NULL);
 
   blend_tool->graph          = graph;
   blend_tool->render_node    = render;
   blend_tool->subtract_node  = subtract;
   blend_tool->divide_node    = divide;
   blend_tool->dist_node      = shapeburst;
-  blend_tool->translate_node = translate;
 
   gimp_blend_tool_update_preview_coords (blend_tool);
 }
@@ -1010,20 +994,23 @@ gimp_blend_tool_update_preview_coords (GimpBlendTool *blend_tool)
 {
   GimpTool *tool = GIMP_TOOL (blend_tool);
 
+  gint off_x, off_y;
+  gimp_item_get_offset (GIMP_ITEM (tool->drawable), &off_x, &off_y);
+
   if (gimp_blend_tool_is_shapeburst (blend_tool))
     {
       gfloat start, end;
 
       gegl_buffer_get (blend_tool->dist_buffer,
-                       GEGL_RECTANGLE (blend_tool->start_x - blend_tool->dist_buffer_off_x,
-                                       blend_tool->start_y - blend_tool->dist_buffer_off_y,
+                       GEGL_RECTANGLE (blend_tool->start_x - off_x,
+                                       blend_tool->start_y - off_y,
                                        1, 1),
                        1.0, babl_format("Y float"), &start,
                        GEGL_AUTO_ROWSTRIDE, GEGL_ABYSS_NONE);
 
       gegl_buffer_get (blend_tool->dist_buffer,
-                       GEGL_RECTANGLE (blend_tool->end_x - blend_tool->dist_buffer_off_x,
-                                       blend_tool->end_y - blend_tool->dist_buffer_off_y,
+                       GEGL_RECTANGLE (blend_tool->end_x - off_x,
+                                       blend_tool->end_y - off_y,
                                        1, 1),
                        1.0, babl_format("Y float"), &end,
                        GEGL_AUTO_ROWSTRIDE, GEGL_ABYSS_NONE);
@@ -1039,9 +1026,6 @@ gimp_blend_tool_update_preview_coords (GimpBlendTool *blend_tool)
     }
   else
     {
-      gint off_x, off_y;
-      gimp_item_get_offset (GIMP_ITEM (tool->drawable), &off_x, &off_y);
-
       gegl_node_set (blend_tool->render_node,
                      "start_x", blend_tool->start_x - off_x,
                      "start_y", blend_tool->start_y - off_y,
diff --git a/app/tools/gimpblendtool.h b/app/tools/gimpblendtool.h
index 3d74c74..3f8a09c 100644
--- a/app/tools/gimpblendtool.h
+++ b/app/tools/gimpblendtool.h
@@ -71,9 +71,7 @@ struct _GimpBlendTool
   GeglNode       *subtract_node;
   GeglNode       *divide_node;
   GeglNode       *dist_node;
-  GeglNode       *translate_node;
   GeglBuffer     *dist_buffer;
-  gint           dist_buffer_off_x, dist_buffer_off_y;
   GimpImageMap   *image_map;
 };