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[gimp/goat-invasion: 50/401] app: added GimpPickable::get_buffer()

commit c7451b4357b669a180aff6697ae35397e23519a0
Author: Michael Natterer <mitch gimp org>
Date:   Thu Mar 15 14:38:54 2012 +0100

    app: added GimpPickable::get_buffer()
    
    Add cached buffers to GimpProjection and GimpImageMap, and use
    the new API where possible.

 app/actions/layers-commands.c |   10 ++++----
 app/core/gimpdrawable.c       |    1 +
 app/core/gimpimagemap.c       |   49 +++++++++++++++++++++++++++++++++++++++-
 app/core/gimppickable.c       |   15 ++++++++++++
 app/core/gimppickable.h       |    2 +
 app/core/gimpprojection.c     |   35 ++++++++++++++++++++++++++++-
 app/core/gimpprojection.h     |    2 +
 app/pdb/layer-cmds.c          |   10 ++++----
 tools/pdbgen/pdb/layer.pdb    |   10 ++++----
 9 files changed, 116 insertions(+), 18 deletions(-)
---
diff --git a/app/actions/layers-commands.c b/app/actions/layers-commands.c
index 0e72a69..0a19989 100644
--- a/app/actions/layers-commands.c
+++ b/app/actions/layers-commands.c
@@ -350,11 +350,11 @@ layers_new_from_visible_cmd_callback (GtkAction *action,
 
   gimp_pickable_flush (pickable);
 
-  layer = gimp_layer_new_from_tiles (gimp_pickable_get_tiles (pickable),
-                                     image,
-                                     gimp_image_base_type_with_alpha (image),
-                                     _("Visible"),
-                                     GIMP_OPACITY_OPAQUE, GIMP_NORMAL_MODE);
+  layer = gimp_layer_new_from_buffer (gimp_pickable_get_buffer (pickable),
+                                      image,
+                                      gimp_image_base_type_with_alpha (image),
+                                      _("Visible"),
+                                      GIMP_OPACITY_OPAQUE, GIMP_NORMAL_MODE);
 
   gimp_image_add_layer (image, layer,
                         GIMP_IMAGE_ACTIVE_PARENT, -1, TRUE);
diff --git a/app/core/gimpdrawable.c b/app/core/gimpdrawable.c
index 5c03540..c154d56 100644
--- a/app/core/gimpdrawable.c
+++ b/app/core/gimpdrawable.c
@@ -273,6 +273,7 @@ gimp_drawable_pickable_iface_init (GimpPickableInterface *iface)
   iface->get_image      = (GimpImage     * (*) (GimpPickable *pickable)) gimp_item_get_image;
   iface->get_image_type = (GimpImageType   (*) (GimpPickable *pickable)) gimp_drawable_type;
   iface->get_bytes      = (gint            (*) (GimpPickable *pickable)) gimp_drawable_bytes;
+  iface->get_buffer     = (GeglBuffer    * (*) (GimpPickable *pickable)) gimp_drawable_get_read_buffer;
   iface->get_tiles      = (TileManager   * (*) (GimpPickable *pickable)) gimp_drawable_get_tiles;
   iface->get_pixel_at   = gimp_drawable_get_pixel_at;
 }
diff --git a/app/core/gimpimagemap.c b/app/core/gimpimagemap.c
index 1566358..528f58a 100644
--- a/app/core/gimpimagemap.c
+++ b/app/core/gimpimagemap.c
@@ -71,6 +71,7 @@ struct _GimpImageMap
   gchar                 *undo_desc;
 
   TileManager           *undo_tiles;
+  GeglBuffer            *undo_buffer;
   gint                   undo_offset_x;
   gint                   undo_offset_y;
 
@@ -102,6 +103,7 @@ static void            gimp_image_map_finalize       (GObject             *objec
 static GimpImage     * gimp_image_map_get_image      (GimpPickable        *pickable);
 static GimpImageType   gimp_image_map_get_image_type (GimpPickable        *pickable);
 static gint            gimp_image_map_get_bytes      (GimpPickable        *pickable);
+static GeglBuffer    * gimp_image_map_get_buffer     (GimpPickable        *pickable);
 static TileManager   * gimp_image_map_get_tiles      (GimpPickable        *pickable);
 static gboolean        gimp_image_map_get_pixel_at   (GimpPickable        *pickable,
                                                       gint                 x,
@@ -154,6 +156,7 @@ gimp_image_map_pickable_iface_init (GimpPickableInterface *iface)
   iface->get_image      = gimp_image_map_get_image;
   iface->get_image_type = gimp_image_map_get_image_type;
   iface->get_bytes      = gimp_image_map_get_bytes;
+  iface->get_buffer     = gimp_image_map_get_buffer;
   iface->get_tiles      = gimp_image_map_get_tiles;
   iface->get_pixel_at   = gimp_image_map_get_pixel_at;
 }
@@ -211,6 +214,12 @@ gimp_image_map_finalize (GObject *object)
       image_map->undo_tiles = NULL;
     }
 
+  if (image_map->undo_buffer)
+    {
+      g_object_unref (image_map->undo_buffer);
+      image_map->undo_buffer = NULL;
+    }
+
   gimp_image_map_cancel_any_idle_jobs (image_map);
 
   if (image_map->gegl)
@@ -269,6 +278,24 @@ gimp_image_map_get_bytes (GimpPickable *pickable)
   return gimp_pickable_get_bytes (GIMP_PICKABLE (image_map->drawable));
 }
 
+static GeglBuffer *
+gimp_image_map_get_buffer (GimpPickable *pickable)
+{
+  GimpImageMap *image_map = GIMP_IMAGE_MAP (pickable);
+
+  if (image_map->undo_tiles)
+    {
+      if (! image_map->undo_buffer)
+        image_map->undo_buffer =
+          gimp_tile_manager_create_buffer (image_map->undo_tiles,
+                                           FALSE);
+
+      return image_map->undo_buffer;
+    }
+  else
+    return gimp_pickable_get_buffer (GIMP_PICKABLE (image_map->drawable));
+}
+
 static TileManager *
 gimp_image_map_get_tiles (GimpPickable *pickable)
 {
@@ -542,6 +569,12 @@ gimp_image_map_commit (GimpImageMap *image_map)
 
       tile_manager_unref (image_map->undo_tiles);
       image_map->undo_tiles = NULL;
+
+      if (image_map->undo_buffer)
+        {
+          g_object_unref (image_map->undo_buffer);
+          image_map->undo_buffer = NULL;
+        }
     }
 }
 
@@ -589,6 +622,12 @@ gimp_image_map_clear (GimpImageMap *image_map)
       /*  Free the undo_tiles tile manager  */
       tile_manager_unref (image_map->undo_tiles);
       image_map->undo_tiles = NULL;
+
+      if (image_map->undo_buffer)
+        {
+          g_object_unref (image_map->undo_buffer);
+          image_map->undo_buffer = NULL;
+        }
     }
 }
 
@@ -632,7 +671,7 @@ gimp_image_map_update_undo_tiles (GimpImageMap        *image_map,
       undo_height   = 0;
     }
 
-  if (! image_map->undo_tiles     ||
+  if (! image_map->undo_tiles      ||
       undo_offset_x != rect->x     ||
       undo_offset_y != rect->y     ||
       undo_width    != rect->width ||
@@ -645,7 +684,7 @@ gimp_image_map_update_undo_tiles (GimpImageMap        *image_map,
       /* If either the extents changed or the tiles don't exist,
        * allocate new
        */
-      if (! image_map->undo_tiles   ||
+      if (! image_map->undo_tiles    ||
           undo_width  != rect->width ||
           undo_height != rect->height)
         {
@@ -671,6 +710,12 @@ gimp_image_map_update_undo_tiles (GimpImageMap        *image_map,
       image_map->undo_offset_x = rect->x;
       image_map->undo_offset_y = rect->y;
     }
+
+  if (image_map->undo_buffer)
+    {
+      g_object_unref (image_map->undo_buffer);
+      image_map->undo_buffer = NULL;
+    }
 }
 
 static gboolean
diff --git a/app/core/gimppickable.c b/app/core/gimppickable.c
index 9f4e320..052e816 100644
--- a/app/core/gimppickable.c
+++ b/app/core/gimppickable.c
@@ -121,6 +121,21 @@ gimp_pickable_get_bytes (GimpPickable *pickable)
   return 0;
 }
 
+GeglBuffer *
+gimp_pickable_get_buffer (GimpPickable *pickable)
+{
+  GimpPickableInterface *pickable_iface;
+
+  g_return_val_if_fail (GIMP_IS_PICKABLE (pickable), NULL);
+
+  pickable_iface = GIMP_PICKABLE_GET_INTERFACE (pickable);
+
+  if (pickable_iface->get_buffer)
+    return pickable_iface->get_buffer (pickable);
+
+  return NULL;
+}
+
 TileManager *
 gimp_pickable_get_tiles (GimpPickable *pickable)
 {
diff --git a/app/core/gimppickable.h b/app/core/gimppickable.h
index 29014ef..96f4e2e 100644
--- a/app/core/gimppickable.h
+++ b/app/core/gimppickable.h
@@ -39,6 +39,7 @@ struct _GimpPickableInterface
   GimpImage     * (* get_image)      (GimpPickable *pickable);
   GimpImageType   (* get_image_type) (GimpPickable *pickable);
   gint            (* get_bytes)      (GimpPickable *pickable);
+  GeglBuffer    * (* get_buffer)     (GimpPickable *pickable);
   TileManager   * (* get_tiles)      (GimpPickable *pickable);
   gboolean        (* get_pixel_at)   (GimpPickable *pickable,
                                       gint          x,
@@ -56,6 +57,7 @@ void            gimp_pickable_flush              (GimpPickable *pickable);
 GimpImage     * gimp_pickable_get_image          (GimpPickable *pickable);
 GimpImageType   gimp_pickable_get_image_type     (GimpPickable *pickable);
 gint            gimp_pickable_get_bytes          (GimpPickable *pickable);
+GeglBuffer    * gimp_pickable_get_buffer         (GimpPickable *pickable);
 TileManager   * gimp_pickable_get_tiles          (GimpPickable *pickable);
 gboolean        gimp_pickable_get_pixel_at       (GimpPickable *pickable,
                                                   gint          x,
diff --git a/app/core/gimpprojection.c b/app/core/gimpprojection.c
index 39f2566..57cf01a 100644
--- a/app/core/gimpprojection.c
+++ b/app/core/gimpprojection.c
@@ -64,6 +64,7 @@ static void        gimp_projection_pickable_flush        (GimpPickable    *picka
 static GimpImage * gimp_projection_get_image             (GimpPickable    *pickable);
 static GimpImageType gimp_projection_get_image_type      (GimpPickable    *pickable);
 static gint        gimp_projection_get_bytes             (GimpPickable    *pickable);
+static GeglBuffer  * gimp_projection_get_buffer          (GimpPickable    *pickable);
 static TileManager * gimp_projection_get_tiles           (GimpPickable    *pickable);
 static gboolean    gimp_projection_get_pixel_at          (GimpPickable    *pickable,
                                                           gint             x,
@@ -150,6 +151,7 @@ gimp_projection_init (GimpProjection *proj)
 {
   proj->projectable              = NULL;
   proj->pyramid                  = NULL;
+  proj->buffer                   = NULL;
   proj->update_areas             = NULL;
   proj->idle_render.idle_id      = 0;
   proj->idle_render.update_areas = NULL;
@@ -163,6 +165,7 @@ gimp_projection_pickable_iface_init (GimpPickableInterface *iface)
   iface->get_image      = gimp_projection_get_image;
   iface->get_image_type = gimp_projection_get_image_type;
   iface->get_bytes      = gimp_projection_get_bytes;
+  iface->get_buffer     = gimp_projection_get_buffer;
   iface->get_tiles      = gimp_projection_get_tiles;
   iface->get_pixel_at   = gimp_projection_get_pixel_at;
   iface->get_opacity_at = gimp_projection_get_opacity_at;
@@ -191,6 +194,12 @@ gimp_projection_finalize (GObject *object)
       proj->pyramid = NULL;
     }
 
+  if (proj->buffer)
+    {
+      g_object_unref (proj->buffer);
+      proj->buffer = NULL;
+    }
+
   if (proj->graph)
     {
       g_object_unref (proj->graph);
@@ -312,6 +321,21 @@ gimp_projection_get_bytes (GimpPickable *pickable)
   return GIMP_IMAGE_TYPE_BYTES (gimp_projection_get_image_type (pickable));
 }
 
+static GeglBuffer *
+gimp_projection_get_buffer (GimpPickable *pickable)
+{
+  GimpProjection *proj = GIMP_PROJECTION (pickable);
+
+  if (! proj->buffer)
+    {
+      TileManager *tiles = gimp_projection_get_tiles (pickable);
+
+      proj->buffer = gimp_tile_manager_create_buffer (tiles, FALSE);
+    }
+
+  return proj->buffer;
+}
+
 static TileManager *
 gimp_projection_get_tiles (GimpPickable *pickable)
 {
@@ -780,7 +804,10 @@ gimp_projection_invalidate (GimpProjection *proj,
       if (proj->sink_node)
         {
           GeglBuffer *buffer;
-          gegl_node_get (proj->sink_node, "buffer", &buffer, NULL);
+
+          gegl_node_get (proj->sink_node,
+                         "buffer", &buffer,
+                         NULL);
 
           /* makes the buffer drop all GimpTiles */
           gegl_tile_source_reinit ((void*)buffer);
@@ -898,6 +925,12 @@ gimp_projection_projectable_changed (GimpProjectable *projectable,
       proj->pyramid = NULL;
     }
 
+  if (proj->buffer)
+    {
+      g_object_unref (proj->buffer);
+      proj->buffer = NULL;
+    }
+
   gimp_projectable_get_offset (proj->projectable, &off_x, &off_y);
   gimp_projectable_get_size (projectable, &width, &height);
 
diff --git a/app/core/gimpprojection.h b/app/core/gimpprojection.h
index ca697b5..c367cd9 100644
--- a/app/core/gimpprojection.h
+++ b/app/core/gimpprojection.h
@@ -55,6 +55,8 @@ struct _GimpProjection
   GimpProjectable          *projectable;
 
   TilePyramid              *pyramid;
+  GeglBuffer               *buffer;
+
   GeglNode                 *graph;
   GeglNode                 *sink_node;
   GeglProcessor            *processor;
diff --git a/app/pdb/layer-cmds.c b/app/pdb/layer-cmds.c
index 4cc2556..fe8511a 100644
--- a/app/pdb/layer-cmds.c
+++ b/app/pdb/layer-cmds.c
@@ -116,11 +116,11 @@ layer_new_from_visible_invoker (GimpProcedure      *procedure,
 
       gimp_pickable_flush (pickable);
 
-      layer = gimp_layer_new_from_tiles (gimp_pickable_get_tiles (pickable),
-                                         dest_image,
-                                         gimp_image_base_type_with_alpha (dest_image),
-                                         name,
-                                         GIMP_OPACITY_OPAQUE, GIMP_NORMAL_MODE);
+      layer = gimp_layer_new_from_buffer (gimp_pickable_get_buffer (pickable),
+                                          dest_image,
+                                          gimp_image_base_type_with_alpha (dest_image),
+                                          name,
+                                          GIMP_OPACITY_OPAQUE, GIMP_NORMAL_MODE);
     }
 
   return_vals = gimp_procedure_get_return_values (procedure, success,
diff --git a/tools/pdbgen/pdb/layer.pdb b/tools/pdbgen/pdb/layer.pdb
index a463017..b655b13 100644
--- a/tools/pdbgen/pdb/layer.pdb
+++ b/tools/pdbgen/pdb/layer.pdb
@@ -99,11 +99,11 @@ HELP
 
   gimp_pickable_flush (pickable);
 
-  layer = gimp_layer_new_from_tiles (gimp_pickable_get_tiles (pickable),
-                                     dest_image,
-                                     gimp_image_base_type_with_alpha (dest_image),
-                                     name,
-                                     GIMP_OPACITY_OPAQUE, GIMP_NORMAL_MODE);
+  layer = gimp_layer_new_from_buffer (gimp_pickable_get_buffer (pickable),
+                                      dest_image,
+                                      gimp_image_base_type_with_alpha (dest_image),
+                                      name,
+                                      GIMP_OPACITY_OPAQUE, GIMP_NORMAL_MODE);
 }
 CODE
     );
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