Operators: Join Areas

add split area to screen manager
- RMB+ALT down on area edge activates
- mouse move interactively to area that is to be removed
- LMB to confirm, ESC to cancel
TODO: 
- notifications for interactive drawing to mark area to remove

Some fixes
- uninitialized var warning.
- exit function of operators need to run before modal handler is removed if operator is used there.
- replaced MEM_mallocN with MEM_callocN to get rid of uninitialized mem for wmOperator.
- respect return value of wm_handler_operator_call() and break out of operator handling.

3 files changed, 4 insertions, 1 deletions

diff --git a/source/blender/windowmanager/intern/wm.c b/source/blender/windowmanager/intern/wm.c
index 6bd7b492039..fb8d0f7503f 100644
--- a/source/blender/windowmanager/intern/wm.c
+++ b/source/blender/windowmanager/intern/wm.c
@@ -53,7 +53,7 @@
 /* called on event handling by event_system.c */
 void wm_operator_register(wmWindowManager *wm, wmOperator *op)
 {
-	wmOperator *opc= MEM_mallocN(sizeof(wmOperator), "operator registry");
+	wmOperator *opc= MEM_callocN(sizeof(wmOperator), "operator registry");
 	int tot;
 	
 	*opc= *op;
diff --git a/source/blender/windowmanager/intern/wm_event_system.c b/source/blender/windowmanager/intern/wm_event_system.c
index ebf94bfc5c3..cfdc88164e3 100644
--- a/source/blender/windowmanager/intern/wm_event_system.c
+++ b/source/blender/windowmanager/intern/wm_event_system.c
@@ -306,6 +306,8 @@ static int wm_handlers_do(bContext *C, wmEvent *event, ListBase *handlers)
 		else {
 			/* modal, swallows all */
 			action= wm_handler_operator_call(C, handler, event);
+			if(action==WM_HANDLER_BREAK)
+				break;
 		}
 		
 		/* modal+blocking handler */
diff --git a/source/blender/windowmanager/intern/wm_operators.c b/source/blender/windowmanager/intern/wm_operators.c
index 05d27c1321a..c9fca2a38d2 100644
--- a/source/blender/windowmanager/intern/wm_operators.c
+++ b/source/blender/windowmanager/intern/wm_operators.c
@@ -165,6 +165,7 @@ IDProperty *op_get_property(wmOperator *op, char *name)
 void op_init_property(wmOperator *op)
 {
 	IDPropertyTemplate val;
+	val.i = 0; /* silence MSVC warning about uninitialized var when debugging */
 	op->properties= IDP_New(IDP_GROUP, val, "property");
 }