[gimp] app: bring back Debug -> Benchmark Projection

[Michael Natterer <mitch src gnome org>]

commit 41148e89966094d98013c5f17d3c07293d708a9c
Author: Michael Natterer <mitch gimp org>
Date:   Mon Jun 2 21:32:00 2014 +0200

    app: bring back Debug -> Benchmark Projection

 app/actions/debug-actions.c  |    8 ++++++++
 app/actions/debug-commands.c |   35 +++++++++++++++++++++++++++++++++++
 app/actions/debug-commands.h |   30 ++++++++++++++++--------------
 menus/image-menu.xml.in      |    1 +
 4 files changed, 60 insertions(+), 14 deletions(-)
---
diff --git a/app/actions/debug-actions.c b/app/actions/debug-actions.c
index 18223ab..5debf3b 100644
--- a/app/actions/debug-actions.c
+++ b/app/actions/debug-actions.c
@@ -43,6 +43,14 @@ static const GimpActionEntry debug_actions[] =
     G_CALLBACK (debug_mem_profile_cmd_callback),
     NULL },
 
+  { "debug-benchmark-projection", NULL,
+    "Benchmark _Projection", NULL,
+    "Invalidates the entire projection, measures the time it takes to "
+    "validate (render) the part that is visible in the active diaplay, "
+    "and print the result to stdout.",
+    G_CALLBACK (debug_benchmark_projection_cmd_callback),
+    NULL },
+
   { "debug-show-image-graph", NULL,
     "Show Image _Graph", NULL,
     "Creates a new image showing the GEGL graph of this image",
diff --git a/app/actions/debug-commands.c b/app/actions/debug-commands.c
index 474b543..a7b1f6c 100644
--- a/app/actions/debug-commands.c
+++ b/app/actions/debug-commands.c
@@ -34,6 +34,7 @@
 #include "core/gimplayer.h"
 #include "core/gimppickable.h"
 #include "core/gimpprojectable.h"
+#include "core/gimpprojection.h"
 
 #include "gegl/gimp-gegl-utils.h"
 
@@ -55,6 +56,7 @@
 
 /*  local function prototypes  */
 
+static gboolean  debug_benchmark_projection    (GimpDisplay *display);
 static gboolean  debug_show_image_graph        (GimpImage   *source_image);
 
 static void      debug_dump_menus_recurse_menu (GtkWidget   *menu,
@@ -89,6 +91,16 @@ debug_mem_profile_cmd_callback (GtkAction *action,
 }
 
 void
+debug_benchmark_projection_cmd_callback (GtkAction *action,
+                                         gpointer   data)
+{
+  GimpDisplay *display;
+  return_if_no_display (display, data);
+
+  g_idle_add ((GSourceFunc) debug_benchmark_projection, g_object_ref (display));
+}
+
+void
 debug_show_image_graph_cmd_callback (GtkAction *action,
                                      gpointer   data)
 {
@@ -271,6 +283,29 @@ debug_dump_attached_data_cmd_callback (GtkAction *action,
 /*  private functions  */
 
 static gboolean
+debug_benchmark_projection (GimpDisplay *display)
+{
+  GimpImage      *image      = gimp_display_get_image (display);
+  GimpProjection *projection = gimp_image_get_projection (image);
+
+  GIMP_TIMER_START ();
+
+  gimp_image_invalidate (image,
+                         0, 0,
+                         gimp_image_get_width  (image),
+                         gimp_image_get_height (image));
+  gimp_projection_flush_now (projection);
+
+  gimp_display_flush_now (display);
+
+  GIMP_TIMER_END ("Validation of the entire projection");
+
+  g_object_unref (display);
+
+  return FALSE;
+}
+
+static gboolean
 debug_show_image_graph (GimpImage *source_image)
 {
   Gimp            *gimp        = source_image->gimp;
diff --git a/app/actions/debug-commands.h b/app/actions/debug-commands.h
index a9f6275..42cb218 100644
--- a/app/actions/debug-commands.h
+++ b/app/actions/debug-commands.h
@@ -26,20 +26,22 @@
 
 #ifdef ENABLE_DEBUG_MENU
 
-void debug_mem_profile_cmd_callback             (GtkAction *action,
-                                                 gpointer   data);
-void debug_dump_menus_cmd_callback              (GtkAction *action,
-                                                 gpointer   data);
-void debug_dump_managers_cmd_callback           (GtkAction *action,
-                                                 gpointer   data);
-void debug_dump_keyboard_shortcuts_cmd_callback (GtkAction *action,
-                                                 gpointer   data);
-void debug_dump_attached_data_cmd_callback      (GtkAction *action,
-                                                 gpointer   data);
-void debug_benchmark_projection_cmd_callback    (GtkAction *action,
-                                                 gpointer   data);
-void debug_show_image_graph_cmd_callback        (GtkAction *action,
-                                                 gpointer   data);
+void   debug_mem_profile_cmd_callback             (GtkAction *action,
+                                                   gpointer   data);
+void   debug_benchmark_projection_cmd_callback    (GtkAction *action,
+                                                   gpointer   data);
+void   debug_show_image_graph_cmd_callback        (GtkAction *action,
+                                                   gpointer   data);
+void   debug_dump_menus_cmd_callback              (GtkAction *action,
+                                                   gpointer   data);
+void   debug_dump_managers_cmd_callback           (GtkAction *action,
+                                                   gpointer   data);
+void   debug_dump_keyboard_shortcuts_cmd_callback (GtkAction *action,
+                                                   gpointer   data);
+void   debug_dump_attached_data_cmd_callback      (GtkAction *action,
+                                                   gpointer   data);
+void   debug_benchmark_projection_cmd_callback    (GtkAction *action,
+                                                   gpointer   data);
 
 #endif /* ENABLE_DEBUG_MENU */
 
diff --git a/menus/image-menu.xml.in b/menus/image-menu.xml.in
index a03f0d1..693c0d3 100644
--- a/menus/image-menu.xml.in
+++ b/menus/image-menu.xml.in
@@ -26,6 +26,7 @@
 <!--  The debug-menu is automatically excluded for stable releases  -->
       <menu action="debug-menu" name="Debug">
         <menuitem action="debug-mem-profile" />
+        <menuitem action="debug-benchmark-projection" />
         <menuitem action="debug-show-image-graph" />
         <separator />
         <menuitem action="debug-dump-items" />