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Pattern for single-RMB tool close. Required reading before editing on_button3_down or any tool's finish() method.
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| name | DM Right-Click Close |
| description | Pattern for single-RMB tool close. Required reading before editing on_button3_down or any tool's finish() method. |
| Action | Behavior |
|---|---|
| Right-click (any state) | Commit in-progress work (if any), then always terminate |
| Enter key | Commit in-progress work; tool may stay alive (subclass decides) |
| ESC key | Terminate without committing |
DMBase.on_button3_down (tools/dm_base.py) is the sole entry point for right-click on all
tools. It uses a deferred closure so finish() and terminate() run outside the Qt event
dispatch stack:
def on_button3_down(self, event_dict):
if not getattr(self, '_finish_scheduled', False):
self._finish_scheduled = True
def _rclick_close():
if self.is_in_progress():
self.finish() # subclass commit (may internally call terminate — safe)
self.terminate() # always close; _terminated guard prevents double-fire
QtCore.QTimer.singleShot(0, _rclick_close)
return True
_terminated Guardterminate() sets self._terminated = True immediately and returns early if already set.
Calling terminate() after finish() (which may itself call terminate()) is always safe.
Do not add an on_button3_down override to a tool unless it has unique commit semantics
that cannot be expressed by overriding finish(). The base-class implementation applies to
all tools. If a tool previously had an override (e.g. SdfEditTool), remove it.
| Method | Commits | Stays alive |
|---|---|---|
finish() | Yes | Depends on tool (subclass may call reset_state() to stay alive, or terminate()) |
terminate() | No | No |
The RMB close pattern calls both: finish() commits, then terminate() ensures the tool
always exits regardless of what finish() did internally.
tools/dm_base.py — on_button3_down (line 625), terminate (line 402), is_in_progress (line 513)tools/edit_tool.py — SdfEditTool.on_button3_down (line 665, to be removed per I-002)tools/primitive_tool.py — SdfPrimitiveCreator.finish (line 157); calls reset_state() not terminate()