Assets: Snapping with visual feedback while dragging

The drag and drop feature of objects in 3D View has been modified to include:
- Snap the object being dragged.
- Visual feedback through a box and the placement tool grid.

Maniphest Tasks: T90198

Differential Revision: https://developer.blender.org/D12912

2 files changed, 22 insertions, 0 deletions

diff --git a/source/blender/editors/asset/ED_asset_mark_clear.h b/source/blender/editors/asset/ED_asset_mark_clear.h
index bab1d1bf8a5..8e6a8e11d69 100644
--- a/source/blender/editors/asset/ED_asset_mark_clear.h
+++ b/source/blender/editors/asset/ED_asset_mark_clear.h
@@ -26,6 +26,7 @@ extern "C" {
 
 struct ID;
 struct bContext;
+struct Main;
 
 /**
  * Mark the datablock as asset.
@@ -52,6 +53,8 @@ void ED_asset_generate_preview(const struct bContext *C, struct ID *id);
  * \return whether the asset metadata was actually removed; false when the ID was not an asset. */
 bool ED_asset_clear_id(struct ID *id);
 
+void ED_assets_pre_save(struct Main *bmain);
+
 bool ED_asset_can_mark_single_from_context(const struct bContext *C);
 
 #ifdef __cplusplus
diff --git a/source/blender/editors/asset/intern/asset_mark_clear.cc b/source/blender/editors/asset/intern/asset_mark_clear.cc
index 4be7376a1c3..eb254dcd28b 100644
--- a/source/blender/editors/asset/intern/asset_mark_clear.cc
+++ b/source/blender/editors/asset/intern/asset_mark_clear.cc
@@ -25,7 +25,9 @@
 
 #include "BKE_asset.h"
 #include "BKE_context.h"
+#include "BKE_idtype.h"
 #include "BKE_lib_id.h"
+#include "BKE_main.h"
 
 #include "BLO_readfile.h"
 
@@ -52,7 +54,9 @@ bool ED_asset_mark_id(ID *id)
 
   id_fake_user_set(id);
 
+  const IDTypeInfo *id_type_info = BKE_idtype_get_info_from_id(id);
   id->asset_data = BKE_asset_metadata_create();
+  id->asset_data->local_type_info = id_type_info->asset_type_info;
 
   /* Important for asset storage to update properly! */
   ED_assetlist_storage_tag_main_data_dirty();
@@ -79,6 +83,21 @@ bool ED_asset_clear_id(ID *id)
   return true;
 }
 
+void ED_assets_pre_save(struct Main *bmain)
+{
+  ID *id;
+  FOREACH_MAIN_ID_BEGIN (bmain, id) {
+    if (!id->asset_data || !id->asset_data->local_type_info) {
+      continue;
+    }
+
+    if (id->asset_data->local_type_info->pre_save_fn) {
+      id->asset_data->local_type_info->pre_save_fn(id, id->asset_data);
+    }
+  }
+  FOREACH_MAIN_ID_END;
+}
+
 bool ED_asset_can_mark_single_from_context(const bContext *C)
 {
   /* Context needs a "id" pointer to be set for #ASSET_OT_mark()/#ASSET_OT_clear() to use. */