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Expand drag tool comments #452

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Nov 30, 2020
Merged

Expand drag tool comments #452

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10 changes: 7 additions & 3 deletions enable/tools/drag_tool.py
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Original file line number Diff line number Diff line change
Expand Up @@ -17,7 +17,9 @@ class DragTool(BaseTool):
drag_button = Enum("left", "right")

# End the drag operation if the mouse leaves the associated component?
end_drag_on_leave = Bool(True)
# NOTE: This behavior depends on "mouse_leave" events, which in general
# are not fired when `capture_mouse` is True (default).
end_drag_on_leave = Bool(False)

# These keys, if pressed during drag, cause the drag operation to reset.
cancel_keys = List(Str, ["Esc"])
Expand All @@ -30,8 +32,10 @@ class DragTool(BaseTool):
# The modifier key that must be used to activate the tool.
modifier_key = Enum("none", "shift", "alt", "control")

# Whether or not to capture the mouse during the drag operation. In
# general this is a good idea.
# Whether or not to capture the mouse during the drag operation. In effect,
# this routes mouse events back to this tool for dispatching, rather than
# allowing the event to be handled by the window. This may have effects
# surrounding "mouse_leave" events: see note on `end_drag_on_leave` flag.
capture_mouse = Bool(True)

#------------------------------------------------------------------------
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