Cleanup: GreasePencil: Move to IDTypeInfo and remove unused BKE API.

source/blender/blenkernel/BKE_gpencil.h

@@ -112,15 +112,12 @@ struct bGPDlayer *BKE_gpencil_layer_duplicate(const struct bGPDlayer *gpl_src);
 void BKE_gpencil_frame_copy_strokes(struct bGPDframe *gpf_src, struct bGPDframe *gpf_dst);
 struct bGPDstroke *BKE_gpencil_stroke_duplicate(struct bGPDstroke *gps_src, const bool dup_points);
 
-void BKE_gpencil_copy_data(struct bGPdata *gpd_dst, const struct bGPdata *gpd_src, const int flag);
 struct bGPdata *BKE_gpencil_copy(struct Main *bmain, const struct bGPdata *gpd);
 
 struct bGPdata *BKE_gpencil_data_duplicate(struct Main *bmain,
                                            const struct bGPdata *gpd,
                                            bool internal_copy);
 
-void BKE_gpencil_make_local(struct Main *bmain, struct bGPdata *gpd, const int flags);
-
 void BKE_gpencil_frame_delete_laststroke(struct bGPDlayer *gpl, struct bGPDframe *gpf);
 
 /* materials */

source/blender/blenkernel/BKE_idtype.h

@@ -150,7 +150,7 @@ extern IDTypeInfo IDType_ID_AC;
 extern IDTypeInfo IDType_ID_NT;
 extern IDTypeInfo IDType_ID_BR;
 extern IDTypeInfo IDType_ID_PA;
-// extern IDTypeInfo IDType_ID_GD;
+extern IDTypeInfo IDType_ID_GD;
 extern IDTypeInfo IDType_ID_WM;
 extern IDTypeInfo IDType_ID_MC;
 extern IDTypeInfo IDType_ID_MSK;

source/blender/blenkernel/intern/gpencil.c

@@ -59,6 +59,7 @@
 #include "BKE_deform.h"
 #include "BKE_gpencil.h"
 #include "BKE_icons.h"
+#include "BKE_idtype.h"
 #include "BKE_image.h"
 #include "BKE_lib_id.h"
 #include "BKE_main.h"
@@ -73,6 +74,54 @@
 
 static CLG_LogRef LOG = {"bke.gpencil"};
 
+static void greasepencil_copy_data(Main *UNUSED(bmain),
+                                   ID *id_dst,
+                                   const ID *id_src,
+                                   const int UNUSED(flag))
+{
+  bGPdata *gpd_dst = (bGPdata *)id_dst;
+  const bGPdata *gpd_src = (const bGPdata *)id_src;
+
+  /* duplicate material array */
+  if (gpd_src->mat) {
+    gpd_dst->mat = MEM_dupallocN(gpd_src->mat);
+  }
+
+  /* copy layers */
+  BLI_listbase_clear(&gpd_dst->layers);
+  LISTBASE_FOREACH (bGPDlayer *, gpl_src, &gpd_src->layers) {
+    /* make a copy of source layer and its data */
+
+    /* TODO here too could add unused flags... */
+    bGPDlayer *gpl_dst = BKE_gpencil_layer_duplicate(gpl_src);
+
+    BLI_addtail(&gpd_dst->layers, gpl_dst);
+  }
+}
+
+static void greasepencil_free_data(ID *id)
+{
+  /* Really not ideal, but for now will do... In theory custom behaviors like not freeing cache
+   * should be handled through specific API, and not be part of the generic one. */
+  BKE_gpencil_free((bGPdata *)id, true);
+}
+
+IDTypeInfo IDType_ID_GD = {
+    .id_code = ID_GD,
+    .id_filter = FILTER_ID_GD,
+    .main_listbase_index = INDEX_ID_GD,
+    .struct_size = sizeof(bGPdata),
+    .name = "GPencil",
+    .name_plural = "grease_pencils",
+    .translation_context = BLT_I18NCONTEXT_ID_GPENCIL,
+    .flags = 0,
+
+    .init_data = NULL,
+    .copy_data = greasepencil_copy_data,
+    .free_data = greasepencil_free_data,
+    .make_local = NULL,
+};
+
 /* ************************************************** */
 /* Draw Engine */
 
@@ -671,35 +720,6 @@ bGPDlayer *BKE_gpencil_layer_duplicate(const bGPDlayer *gpl_src)
   return gpl_dst;
 }
 
-/**
- * Only copy internal data of GreasePencil ID from source
- * to already allocated/initialized destination.
- * You probably never want to use that directly,
- * use #BKE_id_copy or #BKE_id_copy_ex for typical needs.
- *
- * WARNING! This function will not handle ID user count!
- *
- * \param flag: Copying options (see BKE_lib_id.h's LIB_ID_COPY_... flags for more).
- */
-void BKE_gpencil_copy_data(bGPdata *gpd_dst, const bGPdata *gpd_src, const int UNUSED(flag))
-{
-  /* duplicate material array */
-  if (gpd_src->mat) {
-    gpd_dst->mat = MEM_dupallocN(gpd_src->mat);
-  }
-
-  /* copy layers */
-  BLI_listbase_clear(&gpd_dst->layers);
-  LISTBASE_FOREACH (bGPDlayer *, gpl_src, &gpd_src->layers) {
-    /* make a copy of source layer and its data */
-
-    /* TODO here too could add unused flags... */
-    bGPDlayer *gpl_dst = BKE_gpencil_layer_duplicate(gpl_src);
-
-    BLI_addtail(&gpd_dst->layers, gpl_dst);
-  }
-}
-
 /* Standard API to make a copy of GP datablock, separate from copying its data */
 bGPdata *BKE_gpencil_copy(Main *bmain, const bGPdata *gpd)
 {
@@ -733,17 +753,12 @@ bGPdata *BKE_gpencil_data_duplicate(Main *bmain, const bGPdata *gpd_src, bool in
   }
 
   /* Copy internal data (layers, etc.) */
-  BKE_gpencil_copy_data(gpd_dst, gpd_src, 0);
+  greasepencil_copy_data(bmain, &gpd_dst->id, &gpd_src->id, 0);
 
   /* return new */
   return gpd_dst;
 }
 
-void BKE_gpencil_make_local(Main *bmain, bGPdata *gpd, const int flags)
-{
-  BKE_lib_id_make_local_generic(bmain, &gpd->id, flags);
-}
-
 /* ************************************************** */
 /* GP Stroke API */
 

source/blender/blenkernel/intern/idtype.c

@@ -77,7 +77,7 @@ static void id_type_init(void)
   INIT_TYPE(ID_NT);
   INIT_TYPE(ID_BR);
   INIT_TYPE(ID_PA);
-  // INIT_TYPE(ID_GD);
+  INIT_TYPE(ID_GD);
   INIT_TYPE(ID_WM);
   INIT_TYPE(ID_MC);
   INIT_TYPE(ID_MSK);

source/blender/blenkernel/intern/lib_id.c

@@ -536,9 +536,7 @@ bool BKE_lib_id_make_local(Main *bmain, ID *id, const bool test, const int flags
       BLI_assert(0);
       return true;
     case ID_GD:
-      if (!test) {
+      BLI_assert(0);
-        BKE_gpencil_make_local(bmain, (bGPdata *)id, flags);
-      }
       return true;
     case ID_MC:
       BLI_assert(0);
@@ -740,7 +738,7 @@ bool BKE_id_copy_ex(Main *bmain, const ID *id, ID **r_newid, const int flag)
         BLI_assert(0);
         break;
       case ID_GD:
-        BKE_gpencil_copy_data((bGPdata *)*r_newid, (bGPdata *)id, flag);
+        BLI_assert(0);
         break;
       case ID_MC:
         BLI_assert(0);
@@ -1368,7 +1366,7 @@ void BKE_libblock_init_empty(ID *id)
       BLI_assert(0);
       break;
     case ID_GD:
-      /* Nothing to do. */
+      BLI_assert(0);
       break;
     case ID_MSK:
       BLI_assert(0);

source/blender/blenkernel/intern/lib_id_delete.c

@@ -220,7 +220,7 @@ void BKE_libblock_free_datablock(ID *id, const int UNUSED(flag))
       BLI_assert(0);
       break;
     case ID_GD:
-      BKE_gpencil_free((bGPdata *)id, true);
+      BLI_assert(0);
       break;
     case ID_MC:
       BLI_assert(0);