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Add suport for mouse event modifiers in occt_widget (Shift/Ctrl + Left Mouse Button) #355

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Add suport for mouse event modifiers in occt_widget (Shift/Ctrl + Left Mouse Button) #355

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4 changes: 2 additions & 2 deletions README.md
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Original file line number Diff line number Diff line change
Expand Up @@ -74,8 +74,8 @@ Note that `show_object` works for `Shape` and `TopoDS_Shape` objects too. In ord
The following mouse controls can be used to alter the view of the 3D object, and should be familiar to CAD users, even if the mouse buttons used may differ.

* _Left Mouse Button_ + _Drag_ = Rotate
* _Middle Mouse Button_ + _Drag_ = Pan
* _Right Mouse Button_ + _Drag_ = Zoom
* _Middle Mouse Button_ + _Drag_ (or _Left Mouse Button_ + _Ctrl_) = Pan
* _Right Mouse Button_ + _Drag_ (or _Left Mouse Button_ + _Shift_) = Zoom
* _Mouse Wheel_ = Zoom

### Debugging Objects
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6 changes: 3 additions & 3 deletions cq_editor/widgets/occt_widget.py
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Expand Up @@ -87,14 +87,14 @@ def mouseMoveEvent(self,event):
pos = event.pos()
x,y = pos.x(),pos.y()

if event.buttons() == Qt.LeftButton:
if event.buttons() == Qt.LeftButton and event.modifiers() not in (Qt.ShiftModifier, Qt.ControlModifier):
self.view.Rotation(x,y)

elif event.buttons() == Qt.MiddleButton:
elif event.buttons() == Qt.MiddleButton or (event.buttons() == Qt.LeftButton and event.modifiers() == Qt.ControlModifier):
self.view.Pan(x - self.old_pos.x(),
self.old_pos.y() - y, theToStart=True)

elif event.buttons() == Qt.RightButton:
elif event.buttons() == Qt.RightButton or (event.buttons() == Qt.LeftButton and event.modifiers() == Qt.ShiftModifier):
self.view.ZoomAtPoint(self.old_pos.x(), y,
x, self.old_pos.y())

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