GPencil: Initial support for GP Layers in Outliner

This is still very rudimentary, and lacks many things.
* This needs a better icon. Perhaps we can look into using colour swatches here
  too like in all the other places?
* The "active" check needs to be implemented still
* Various restriction toggles to come still

4 files changed, 30 insertions, 2 deletions

diff --git a/source/blender/editors/space_outliner/outliner_draw.c b/source/blender/editors/space_outliner/outliner_draw.c
index f604679e12c..97d6a883fa3 100644
--- a/source/blender/editors/space_outliner/outliner_draw.c
+++ b/source/blender/editors/space_outliner/outliner_draw.c
@@ -31,6 +31,7 @@
 
 #include "DNA_anim_types.h"
 #include "DNA_armature_types.h"
+#include "DNA_gpencil_types.h"
 #include "DNA_group_types.h"
 #include "DNA_lamp_types.h"
 #include "DNA_object_types.h"
@@ -549,6 +550,17 @@ static void namebutton_cb(bContext *C, void *tsep, char *oldname)
 					WM_event_add_notifier(C, NC_OBJECT | ND_POSE, ob);
 					break;
 				}
+				case TSE_GP_LAYER:
+				{
+					bGPdata *gpd = (bGPdata *)tselem->id; // id = GP Datablock
+					bGPDlayer *gpl = te->directdata;
+					
+					// XXX: name needs translation stuff
+					BLI_uniquename(&gpd->layers, gpl, "GP Layer", '.',
+					               offsetof(bGPDlayer, info), sizeof(gpl->info));
+					WM_event_add_notifier(C, NC_GPENCIL | ND_DATA, gpd);
+					break;
+				}
 				case TSE_R_LAYER:
 					break;
 			}
@@ -1074,6 +1086,8 @@ static void tselem_draw_icon(uiBlock *block, int xmax, float x, float y, TreeSto
 				else
 					UI_icon_draw(x, y, RNA_struct_ui_icon(te->rnaptr.type));
 				break;
+			case TSE_GP_LAYER:
+				UI_icon_draw(x, y, ICON_DOT); break; // XXX: needs a dedicated icon?
 			default:
 				UI_icon_draw(x, y, ICON_DOT); break;
 		}
diff --git a/source/blender/editors/space_outliner/outliner_intern.h b/source/blender/editors/space_outliner/outliner_intern.h
index 26283dfdd83..05e5d3c0677 100644
--- a/source/blender/editors/space_outliner/outliner_intern.h
+++ b/source/blender/editors/space_outliner/outliner_intern.h
@@ -104,6 +104,7 @@ typedef struct TreeElement {
 #define TSE_KEYMAP          34
 #define TSE_KEYMAP_ITEM     35
 #define TSE_ID_BASE			36
+#define TSE_GP_LAYER        37
 
 /* button events */
 #define OL_NAMEBUTTON       1
diff --git a/source/blender/editors/space_outliner/outliner_select.c b/source/blender/editors/space_outliner/outliner_select.c
index ad71ac8bf30..730ee02f448 100644
--- a/source/blender/editors/space_outliner/outliner_select.c
+++ b/source/blender/editors/space_outliner/outliner_select.c
@@ -873,6 +873,9 @@ eOLDrawState tree_element_type_active(
 			return tree_element_active_sequence_dup(scene, te, tselem, set);
 		case TSE_KEYMAP_ITEM:
 			return tree_element_active_keymap_item(C, te, tselem, set);
+		case TSE_GP_LAYER:
+			//return tree_element_active_gplayer(C, scene, te, tselem, set);
+			break;
 			
 	}
 	return OL_DRAWSEL_NONE;
diff --git a/source/blender/editors/space_outliner/outliner_tree.c b/source/blender/editors/space_outliner/outliner_tree.c
index 8a4b6f1444e..273cf75f1bd 100644
--- a/source/blender/editors/space_outliner/outliner_tree.c
+++ b/source/blender/editors/space_outliner/outliner_tree.c
@@ -822,9 +822,10 @@ static void outliner_add_id_contents(SpaceOops *soops, TreeElement *te, TreeStor
 			
 			if (outliner_animdata_test(gpd->adt))
 				outliner_add_element(soops, &te->subtree, gpd, te, TSE_ANIM_DATA, 0);
-				
+			
+			// TODO: base element for layers?
 			for (gpl = gpd->layers.first; gpl; gpl = gpl->next) {
-				// TODO
+				outliner_add_element(soops, &te->subtree, gpl, te, TSE_GP_LAYER, a);
 				a++;
 			}
 		}
@@ -875,6 +876,9 @@ static TreeElement *outliner_add_element(SpaceOops *soops, ListBase *lb, void *i
 	else if (type == TSE_ANIM_DATA) {
 		/* pass */
 	}
+	else if (type == TSE_GP_LAYER) {
+		/* pass */
+	}
 	else if (type == TSE_ID_BASE) {
 		/* pass */
 	}
@@ -957,6 +961,12 @@ static TreeElement *outliner_add_element(SpaceOops *soops, ListBase *lb, void *i
 			}
 		}
 	}
+	else if (type == TSE_GP_LAYER) {
+		bGPDlayer *gpl = (bGPDlayer *)idv;
+		
+		te->name = gpl->info;
+		te->directdata = gpl;
+	}
 	else if (type == TSE_SEQUENCE) {
 		Sequence *seq = (Sequence *) idv;
 		Sequence *p;