Shape Keys

Active shape key can now be changed while in edit mode. This is based
on exit/enter editmode again in the background, which is not ideal,
as that loses the undo history. But that already happened anyway when
you did exit/change-active/enter manually.

release/scripts/ui/buttons_data_mesh.py

@@ -154,6 +154,7 @@ class DATA_PT_shape_keys(DataButtonsPanel):
 			sub.alignment = 'RIGHT'
 
 			subrow = sub.row(align=True)
+			subrow.active= enable_edit_value
 			subrow.itemR(ob, "shape_key_lock", icon='ICON_UNPINNED', text="")
 			subrow.itemR(kb, "mute", icon='ICON_MUTE_IPO_OFF', text="")
 			subrow.itemO("object.shape_key_clear", icon='ICON_X', text="")
@@ -163,31 +164,30 @@ class DATA_PT_shape_keys(DataButtonsPanel):
 			sub.itemR(ob, "shape_key_edit_mode", text="")
 
 			row = layout.row()
-			row.enabled = enable_edit_value
 			row.itemR(kb, "name")
 
 			if key.relative:
 				if ob.active_shape_key_index != 0:
 					row = layout.row()
-					row.enabled = enable_edit_value
+					row.active = enable_edit_value
 					row.itemR(kb, "value")
 					
 					split = layout.split()
 					sub = split.column(align=True)
-					sub.enabled = enable_edit_value
+					sub.active = enable_edit_value
 					sub.itemL(text="Range:")
 					sub.itemR(kb, "slider_min", text="Min")
 					sub.itemR(kb, "slider_max", text="Max")
 					
 					sub = split.column(align=True)
-					sub.enabled = enable_edit_value
+					sub.active = enable_edit_value
 					sub.itemL(text="Blend:")
 					sub.item_pointerR(kb, "vertex_group", ob, "vertex_groups", text="")
 					sub.item_pointerR(kb, "relative_key", key, "keys", text="")
 					
 			else:
 				row = layout.row()
-				row.enabled = enable_edit
+				row.active = enable_edit_value
 				row.itemR(key, "slurph")
 
 class DATA_PT_uv_texture(DataButtonsPanel):

source/blender/blenlib/BLI_editVert.h

@@ -173,6 +173,8 @@ typedef struct EditMesh
 	short mat_nr;
 	/* stats */
 	int totvert, totedge, totface, totvertsel, totedgesel, totfacesel;
+	/* shape key being edited */
+	int shapenr;
 	
 	struct DerivedMesh *derivedCage, *derivedFinal;
 	/* the custom data layer mask that was last used to calculate

source/blender/editors/interface/interface_templates.c

@@ -1960,7 +1960,7 @@ static void list_item_row(bContext *C, uiLayout *layout, PointerRNA *ptr, Pointe
 	Object *ob;
 	uiBlock *block= uiLayoutGetBlock(layout);
 	uiBut *but;
-	uiLayout *split, *overlap, *sub;
+	uiLayout *split, *overlap, *sub, *row;
 	char *name, *namebuf;
 	int icon;
 
@@ -1971,7 +1971,8 @@ static void list_item_row(bContext *C, uiLayout *layout, PointerRNA *ptr, Pointe
 
 	if(itemptr->type == &RNA_ShapeKey) {
 		ob= (Object*)activeptr->data;
-		uiLayoutSetEnabled(sub, ob->mode != OB_MODE_EDIT);
+		if(ob->mode == OB_MODE_EDIT && !(ob->type == OB_MESH))
+			uiLayoutSetEnabled(sub, 0);
 	}
 
 	but= uiDefButR(block, LISTROW, 0, "", 0,0, UI_UNIT_X*10,UI_UNIT_Y, activeptr, activepropname, 0, 0, i, 0, 0, "");
@@ -2005,11 +2006,13 @@ static void list_item_row(bContext *C, uiLayout *layout, PointerRNA *ptr, Pointe
 
 		uiItemL(split, name, icon);
 
-		if(i == 0) uiItemL(split, "", 0);
-		else uiItemR(split, "", 0, itemptr, "value", 0);
-		if(ob->mode == OB_MODE_EDIT && !(ob->shapeflag & OB_SHAPE_EDIT_MODE))
-			uiLayoutSetEnabled(split, 0);
-		//uiItemR(split, "", ICON_MUTE_IPO_OFF, itemptr, "mute", 0);
+		row= uiLayoutRow(split, 1);
+		if(i == 0) uiItemL(row, "", 0);
+		else uiItemR(row, "", 0, itemptr, "value", 0);
+
+		if(ob->mode == OB_MODE_EDIT && !((ob->shapeflag & OB_SHAPE_EDIT_MODE) && ob->type == OB_MESH))
+			uiLayoutSetActive(row, 0);
+		//uiItemR(row, "", ICON_MUTE_IPO_OFF, itemptr, "mute", 0);
 	}
 	else
 		uiItemL(sub, name, icon);

source/blender/editors/mesh/editmesh.c

@@ -785,6 +785,7 @@ void make_editMesh(Scene *scene, Object *ob)
 		/* undo-ing in past for previous editmode sessions gives corrupt 'keyindex' values */
 		undo_editmode_clear();
 		keyco= actkey->data;
+		em->shapenr= ob->shapenr;
 	}
 
 	/* make editverts */
@@ -1184,7 +1185,8 @@ void load_editMesh(Scene *scene, Object *ob)
 
 	/* are there keys? */
 	if(me->key) {
-		KeyBlock *currkey, *actkey = ob_get_keyblock(ob);
+		KeyBlock *currkey;
+		KeyBlock *actkey= BLI_findlink(&me->key->block, em->shapenr-1);
 
 		/* Lets reorder the key data so that things line up roughly
 		 * with the way things were before editmode */

source/blender/editors/object/object_edit.c

@@ -480,7 +480,6 @@ void ED_object_enter_editmode(bContext *C, int flag)
 
 static int editmode_toggle_exec(bContext *C, wmOperator *op)
 {
-	
 	if(!CTX_data_edit_object(C))
 		ED_object_enter_editmode(C, EM_WAITCURSOR);
 	else

source/blender/makesrna/intern/rna_object.c

@@ -121,6 +121,21 @@ void rna_Object_update_data(bContext *C, PointerRNA *ptr)
 	WM_event_add_notifier(C, NC_OBJECT|ND_DRAW, ptr->id.data);
 }
 
+void rna_Object_active_shape_update(bContext *C, PointerRNA *ptr)
+{
+	Object *ob= ptr->id.data;
+	Scene *scene= CTX_data_scene(C);
+	int editmode= (scene->obedit == ob && ob->type == OB_MESH);
+
+	if(editmode) {
+		/* exit/enter editmode to get new shape */
+		ED_object_exit_editmode(C, EM_FREEDATA|EM_FREEUNDO);
+		ED_object_enter_editmode(C, EM_WAITCURSOR);
+	}
+
+	rna_Object_update_data(C, ptr);
+}
+
 static void rna_Object_dependency_update(bContext *C, PointerRNA *ptr)
 {
 	DAG_id_flush_update(ptr->id.data, OB_RECALC_OB);
@@ -1657,7 +1672,7 @@ static void rna_def_object(BlenderRNA *brna)
 	RNA_def_property_int_sdna(prop, NULL, "shapenr");
 	RNA_def_property_int_funcs(prop, "rna_Object_active_shape_key_index_get", "rna_Object_active_shape_key_index_set", "rna_Object_active_shape_key_index_range");
 	RNA_def_property_ui_text(prop, "Active Shape Key Index", "Current shape key index.");
-	RNA_def_property_update(prop, 0, "rna_Object_update_data");
+	RNA_def_property_update(prop, 0, "rna_Object_active_shape_update");
 
 	RNA_api_object(srna);
 }