Constraints: Use RNA update instead of block update

Allows to have more control over which tags are done for which
properties.

This is a part of T62960 which fixes the issue in the 2.7 series.

source/blender/editors/interface/interface_templates.c

@@ -27,6 +27,7 @@
 #include "MEM_guardedalloc.h"
 
 #include "DNA_cachefile_types.h"
+#include "DNA_constraint_types.h"
 #include "DNA_node_types.h"
 #include "DNA_scene_types.h"
 #include "DNA_object_types.h"
@@ -47,8 +48,10 @@
 #include "BLF_api.h"
 #include "BLT_translation.h"
 
+#include "BKE_action.h"
 #include "BKE_colorband.h"
 #include "BKE_colortools.h"
+#include "BKE_constraint.h"
 #include "BKE_context.h"
 #include "BKE_depsgraph.h"
 #include "BKE_global.h"
@@ -1164,47 +1167,6 @@ uiLayout *uiTemplateModifier(uiLayout *layout, bContext *C, PointerRNA *ptr)
 
 /************************ Constraint Template *************************/
 
-#include "DNA_constraint_types.h"
-
-#include "BKE_action.h"
-#include "BKE_constraint.h"
-
-#define B_CONSTRAINT_TEST           5
-// #define B_CONSTRAINT_CHANGETARGET   6
-
-static void do_constraint_panels(bContext *C, void *ob_pt, int event)
-{
-	Object *ob = (Object *)ob_pt;
-
-	switch (event) {
-		case B_CONSTRAINT_TEST:
-			break; /* no handling */
-#if 0	/* UNUSED */
-		case B_CONSTRAINT_CHANGETARGET:
-		{
-			Main *bmain = CTX_data_main(C);
-			if (ob->pose)
-				BKE_pose_tag_recalc(bmain, ob->pose); /* checks & sorts pose channels */
-			DAG_relations_tag_update(bmain);
-			break;
-		}
-#endif
-		default:
-			break;
-	}
-
-	/* note: RNA updates now call this, commenting else it gets called twice.
-	 * if there are problems because of this, then rna needs changed update functions.
-	 *
-	 * object_test_constraints(ob);
-	 * if (ob->pose) BKE_pose_update_constraint_flags(ob->pose); */
-
-	if (ob->type == OB_ARMATURE) DAG_id_tag_update(&ob->id, OB_RECALC_DATA | OB_RECALC_OB);
-	else DAG_id_tag_update(&ob->id, OB_RECALC_OB);
-
-	WM_event_add_notifier(C, NC_OBJECT | ND_CONSTRAINT, ob);
-}
-
 static void constraint_active_func(bContext *UNUSED(C), void *ob_v, void *con_v)
 {
 	ED_object_constraint_set_active(ob_v, con_v);
@@ -1239,7 +1201,6 @@ static uiLayout *draw_constraint(uiLayout *layout, Object *ob, bConstraint *con)
 
 	/* unless button has own callback, it adds this callback to button */
 	block = uiLayoutGetBlock(layout);
-	UI_block_func_handle_set(block, do_constraint_panels, ob);
 	UI_block_func_set(block, constraint_active_func, ob, con);
 
 	RNA_pointer_create(&ob->id, &RNA_Constraint, con, &ptr);
@@ -1259,7 +1220,7 @@ static uiLayout *draw_constraint(uiLayout *layout, Object *ob, bConstraint *con)
 	UI_block_emboss_set(block, UI_EMBOSS);
 
 	/* name */
-	uiDefBut(block, UI_BTYPE_LABEL, B_CONSTRAINT_TEST, typestr,
+	uiDefBut(block, UI_BTYPE_LABEL, 0, typestr,
 	         xco + 0.5f * UI_UNIT_X, yco, 5 * UI_UNIT_X, 0.9f * UI_UNIT_Y, NULL, 0.0, 0.0, 0.0, 0.0, "");
 
 	if (con->flag & CONSTRAINT_DISABLE)
@@ -1278,9 +1239,9 @@ static uiLayout *draw_constraint(uiLayout *layout, Object *ob, bConstraint *con)
 		UI_block_emboss_set(block, UI_EMBOSS_NONE);
 
 		/* draw a ghost icon (for proxy) and also a lock beside it, to show that constraint is "proxy locked" */
-		uiDefIconBut(block, UI_BTYPE_BUT, B_CONSTRAINT_TEST, ICON_GHOST, xco + 12.2f * UI_UNIT_X, yco, 0.95f * UI_UNIT_X, 0.95f * UI_UNIT_Y,
+		uiDefIconBut(block, UI_BTYPE_BUT, 0, ICON_GHOST, xco + 12.2f * UI_UNIT_X, yco, 0.95f * UI_UNIT_X, 0.95f * UI_UNIT_Y,
 		             NULL, 0.0, 0.0, 0.0, 0.0, TIP_("Proxy Protected"));
-		uiDefIconBut(block, UI_BTYPE_BUT, B_CONSTRAINT_TEST, ICON_LOCKED, xco + 13.1f * UI_UNIT_X, yco, 0.95f * UI_UNIT_X, 0.95f * UI_UNIT_Y,
+		uiDefIconBut(block, UI_BTYPE_BUT, 0, ICON_LOCKED, xco + 13.1f * UI_UNIT_X, yco, 0.95f * UI_UNIT_X, 0.95f * UI_UNIT_Y,
 		             NULL, 0.0, 0.0, 0.0, 0.0, TIP_("Proxy Protected"));
 
 		UI_block_emboss_set(block, UI_EMBOSS);

source/blender/makesrna/intern/rna_constraint.c

@@ -2520,17 +2520,20 @@ void RNA_def_constraint(BlenderRNA *brna)
 	RNA_def_property_enum_items(prop, owner_space_pchan_items);
 	RNA_def_property_enum_funcs(prop, NULL, NULL, "rna_Constraint_owner_space_itemf");
 	RNA_def_property_ui_text(prop, "Owner Space", "Space that owner is evaluated in");
+	RNA_def_property_update(prop, NC_OBJECT | ND_CONSTRAINT, "rna_Constraint_update");
 
 	prop = RNA_def_property(srna, "target_space", PROP_ENUM, PROP_NONE);
 	RNA_def_property_enum_sdna(prop, NULL, "tarspace");
 	RNA_def_property_enum_items(prop, target_space_pchan_items);
 	RNA_def_property_enum_funcs(prop, NULL, NULL, "rna_Constraint_target_space_itemf");
 	RNA_def_property_ui_text(prop, "Target Space", "Space that target is evaluated in");
+	RNA_def_property_update(prop, NC_OBJECT | ND_CONSTRAINT, "rna_Constraint_update");
 
 	/* flags */
 	prop = RNA_def_property(srna, "mute", PROP_BOOLEAN, PROP_NONE);
 	RNA_def_property_boolean_sdna(prop, NULL, "flag", CONSTRAINT_OFF);
 	RNA_def_property_ui_text(prop, "Disable", "Enable/Disable Constraint");
+	RNA_def_property_update(prop, NC_OBJECT | ND_CONSTRAINT, "rna_Constraint_update");
 
 	prop = RNA_def_property(srna, "show_expanded", PROP_BOOLEAN, PROP_NONE);
 	RNA_def_property_boolean_sdna(prop, NULL, "flag", CONSTRAINT_EXPAND);