[Octave-bug-tracker] [bug #44302] Qt mouse wheel zoom direction should be reversed

[Rik]

Follow-up Comment #10, bug #44302 (project octave):

It should be Qt who decides on single/double click.  But Octave is not
connecting to the single click event.  In Canvas.cc, the code connects to


void Canvas::canvasMousePressEvent (QMouseEvent* event)
void Canvas::canvasMouseReleaseEvent (QMouseEvent* event)
void Canvas::canvasMouseDoubleClickEvent (QMouseEvent* event)


The code in canvasMousePressEvent detects the first button down of a double
click and implements the "Zoom In" function.  Only later does Qt deliver a
DoubleClickEvent which then autoscales the axis.  So there is a strange Zoom
In, followed by a jump back to the autoscaled size.


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