UI: ShaderFx Drag and Drop, Layout Updates

This patch implements the list panel system D7490 for grease pencil
shader effects. It also moves their drawing to a callback in
ShaderFxTypeInfo in line with the extensible architecture refactoring
goal T75724.

The implementation is basically exactly the same as for the modifier
patch (9b099c86123fc82).

Thanks to Matias Mendiola (@mendio) for helping to develop the layout
changes.

Differential Revision: https://developer.blender.org/D7985

1 files changed, 15 insertions, 0 deletions

diff --git a/source/blender/blenloader/intern/versioning_290.c b/source/blender/blenloader/intern/versioning_290.c
index 00c73ebe9a7..bf4ed270e33 100644
--- a/source/blender/blenloader/intern/versioning_290.c
+++ b/source/blender/blenloader/intern/versioning_290.c
@@ -30,6 +30,7 @@
 #include "DNA_modifier_types.h"
 #include "DNA_object_types.h"
 #include "DNA_screen_types.h"
+#include "DNA_shader_fx_types.h"
 
 #include "BKE_collection.h"
 #include "BKE_colortools.h"
@@ -317,5 +318,19 @@ void blo_do_versions_290(FileData *fd, Library *UNUSED(lib), Main *bmain)
         }
       }
     }
+
+    /* Transition to saving expansion for all of an effect's subpanels. */
+    if (!DNA_struct_elem_find(fd->filesdna, "ShaderFxData", "short", "ui_expand_flag")) {
+      for (Object *object = bmain->objects.first; object != NULL; object = object->id.next) {
+        LISTBASE_FOREACH (ShaderFxData *, fx, &object->shader_fx) {
+          if (fx->mode & eShaderFxMode_Expanded_DEPRECATED) {
+            fx->ui_expand_flag = 1;
+          }
+          else {
+            fx->ui_expand_flag = 0;
+          }
+        }
+      }
+    }
   }
 }