[gimp] app: implement begin_use()/end_use() in GimpBrushPipe

[Michael Natterer <mitch src gnome org>]

commit 846cc27207b62bf64cb7fce4f3bb1dffedb53c71
Author: Michael Natterer <mitch gimp org>
Date:   Tue Apr 12 13:59:39 2011 +0200

    app: implement begin_use()/end_use() in GimpBrushPipe
    
    and call it on all the pipe's sub-brushes

 app/core/gimpbrushpipe.c |   30 ++++++++++++++++++++++++++++++
 1 files changed, 30 insertions(+), 0 deletions(-)
---
diff --git a/app/core/gimpbrushpipe.c b/app/core/gimpbrushpipe.c
index 618885a..d76a8c5 100644
--- a/app/core/gimpbrushpipe.c
+++ b/app/core/gimpbrushpipe.c
@@ -42,6 +42,8 @@ static gboolean    gimp_brush_pipe_get_popup_size   (GimpViewable     *viewable,
                                                      gint             *popup_width,
                                                      gint             *popup_height);
 
+static void        gimp_brush_pipe_begin_use        (GimpBrush        *brush);
+static void        gimp_brush_pipe_end_use          (GimpBrush        *brush);
 static GimpBrush * gimp_brush_pipe_select_brush     (GimpBrush        *brush,
                                                      const GimpCoords *last_coords,
                                                      const GimpCoords *current_coords);
@@ -69,6 +71,8 @@ gimp_brush_pipe_class_init (GimpBrushPipeClass *klass)
 
   viewable_class->get_popup_size = gimp_brush_pipe_get_popup_size;
 
+  brush_class->begin_use         = gimp_brush_pipe_begin_use;
+  brush_class->end_use           = gimp_brush_pipe_end_use;
   brush_class->select_brush      = gimp_brush_pipe_select_brush;
   brush_class->want_null_motion  = gimp_brush_pipe_want_null_motion;
 }
@@ -162,6 +166,32 @@ gimp_brush_pipe_get_popup_size (GimpViewable *viewable,
   return gimp_viewable_get_size (viewable, popup_width, popup_height);
 }
 
+static void
+gimp_brush_pipe_begin_use (GimpBrush *brush)
+{
+  GimpBrushPipe *pipe = GIMP_BRUSH_PIPE (brush);
+  gint           i;
+
+  GIMP_BRUSH_CLASS (parent_class)->begin_use (brush);
+
+  for (i = 0; i < pipe->n_brushes; i++)
+    if (pipe->brushes[i])
+      gimp_brush_begin_use (pipe->brushes[i]);
+}
+
+static void
+gimp_brush_pipe_end_use (GimpBrush *brush)
+{
+  GimpBrushPipe *pipe = GIMP_BRUSH_PIPE (brush);
+  gint           i;
+
+  GIMP_BRUSH_CLASS (parent_class)->end_use (brush);
+
+  for (i = 0; i < pipe->n_brushes; i++)
+    if (pipe->brushes[i])
+      gimp_brush_end_use (pipe->brushes[i]);
+}
+
 static GimpBrush *
 gimp_brush_pipe_select_brush (GimpBrush        *brush,
                               const GimpCoords *last_coords,