From 3c71b105224da7476b91f9ed1760e72c7b174690 Mon Sep 17 00:00:00 2001
From: Carsten Haitzler <raster@rasterman.com>
Date: Tue, 16 Feb 2010 16:36:16 +0000
Subject: [PATCH] add back face cull option.

SVN revision: 46217
---
 legacy/edje/src/bin/edje_cc_handlers.c | 20 ++++++++++++++++++++
 legacy/edje/src/lib/edje_calc.c        | 10 ++++++++++
 legacy/edje/src/lib/edje_data.c        |  1 +
 legacy/edje/src/lib/edje_private.h     |  1 +
 4 files changed, 32 insertions(+)

diff --git a/legacy/edje/src/bin/edje_cc_handlers.c b/legacy/edje/src/bin/edje_cc_handlers.c
index 28583bf3c4..104bde0087 100644
--- a/legacy/edje/src/bin/edje_cc_handlers.c
+++ b/legacy/edje/src/bin/edje_cc_handlers.c
@@ -208,6 +208,7 @@ static void st_collections_group_parts_part_description_map_rotation_x(void);
 static void st_collections_group_parts_part_description_map_rotation_y(void);
 static void st_collections_group_parts_part_description_map_rotation_z(void);
 static void st_collections_group_parts_part_description_map_on(void);
+static void st_collections_group_parts_part_description_map_backface_cull(void);
 static void st_collections_group_parts_part_description_perspective_zplane(void);
 static void st_collections_group_parts_part_description_perspective_focal(void);
 static void st_collections_group_parts_part_api(void);
@@ -429,6 +430,7 @@ New_Statement_Handler statement_handlers[] =
      {"collections.group.parts.part.description.map.rotation.y", st_collections_group_parts_part_description_map_rotation_y},
      {"collections.group.parts.part.description.map.rotation.z", st_collections_group_parts_part_description_map_rotation_z},
      {"collections.group.parts.part.description.map.on", st_collections_group_parts_part_description_map_on},
+     {"collections.group.parts.part.description.map.backface_cull", st_collections_group_parts_part_description_map_backface_cull},
      {"collections.group.parts.part.description.perspective.zplane", st_collections_group_parts_part_description_perspective_zplane},
      {"collections.group.parts.part.description.perspective.focal", st_collections_group_parts_part_description_perspective_focal},
      {"collections.group.parts.part.description.params.int", st_collections_group_parts_part_description_params_int},
@@ -3092,6 +3094,7 @@ ob_collections_group_parts_part_description(void)
    ed->map.rot.y = FROM_DOUBLE(0.0);
    ed->map.rot.z = FROM_DOUBLE(0.0);
    ed->map.on = 0;
+   ed->map.backcull = 0;
    ed->persp.zplane = 0;
    ed->persp.focal = 1000;
    ed->external_params = NULL;
@@ -5754,6 +5757,23 @@ st_collections_group_parts_part_description_map_on(void)
    ed->map.on = parse_bool(0);
 }
 
+static void
+st_collections_group_parts_part_description_map_backface_cull(void)
+{
+   Edje_Part_Collection *pc;
+   Edje_Part *ep;
+   Edje_Part_Description *ed;
+
+   check_arg_count(1);
+   
+   pc = eina_list_data_get(eina_list_last(edje_collections));
+   ep = eina_list_data_get(eina_list_last(pc->parts));
+   
+   ed = ep->default_desc;
+   if (ep->other_desc) ed = eina_list_data_get(eina_list_last(ep->other_desc));
+   ed->map.backcull = parse_bool(0);
+}
+
 static void
 st_collections_group_parts_part_description_perspective_zplane(void)
 {
diff --git a/legacy/edje/src/lib/edje_calc.c b/legacy/edje/src/lib/edje_calc.c
index 54cb206d7b..69061de913 100644
--- a/legacy/edje/src/lib/edje_calc.c
+++ b/legacy/edje/src/lib/edje_calc.c
@@ -2111,6 +2111,16 @@ _edje_part_recalc(Edje *ed, Edje_Real_Part *ep, int flags)
                }
              evas_object_map_set(mo, map);
              evas_object_map_enable_set(mo, 1);
+             if (ep->param1.description->map.backcull)
+               {
+                  if (pf->visible)
+                    {
+                       if (evas_map_util_clockwise_get(map))
+                         evas_object_show(mo);
+                       else
+                         evas_object_hide(mo);
+                    }
+               }
              evas_map_free(map);
           }
         else
diff --git a/legacy/edje/src/lib/edje_data.c b/legacy/edje/src/lib/edje_data.c
index 5e17003cc5..9f9dc90b32 100644
--- a/legacy/edje/src/lib/edje_data.c
+++ b/legacy/edje/src/lib/edje_data.c
@@ -356,6 +356,7 @@ _edje_edd_init(void)
    EET_DATA_DESCRIPTOR_ADD_BASIC(_edje_edd_edje_part_description, Edje_Part_Description, "map.rot.y", map.rot.y, EDJE_T_FLOAT);
    EET_DATA_DESCRIPTOR_ADD_BASIC(_edje_edd_edje_part_description, Edje_Part_Description, "map.rot.z", map.rot.z, EDJE_T_FLOAT);
    EET_DATA_DESCRIPTOR_ADD_BASIC(_edje_edd_edje_part_description, Edje_Part_Description, "map.on", map.on, EET_T_UCHAR);
+   EET_DATA_DESCRIPTOR_ADD_BASIC(_edje_edd_edje_part_description, Edje_Part_Description, "map.backcull", map.backcull, EET_T_UCHAR);
    EET_DATA_DESCRIPTOR_ADD_BASIC(_edje_edd_edje_part_description, Edje_Part_Description, "persp.zplane", persp.zplane, EET_T_INT);
    EET_DATA_DESCRIPTOR_ADD_BASIC(_edje_edd_edje_part_description, Edje_Part_Description, "persp.focal", persp.focal, EET_T_INT);
    EET_DATA_DESCRIPTOR_ADD_LIST(_edje_edd_edje_part_description, Edje_Part_Description, "external_params", external_params, _edje_edd_edje_external_param);
diff --git a/legacy/edje/src/lib/edje_private.h b/legacy/edje/src/lib/edje_private.h
index c631b5654d..1d7e1122bf 100644
--- a/legacy/edje/src/lib/edje_private.h
+++ b/legacy/edje/src/lib/edje_private.h
@@ -671,6 +671,7 @@ struct _Edje_Part_Description
          int id_center;
          FLOAT_T x, y, z;
       } rot;
+      unsigned char backcull;
       unsigned char on;
    } map;