Feature request #6432

Keep map object under the pointer still while zooming in

Added by Sandro Santilli about 10 years ago. Updated about 10 years ago.

Pull Request or Patch supplied:No Resolution:invalid
Easy fix?:No Copied to github as #:15675


While zooming in to a feature with the mouse wheel it is very easy to loose it unless it is perfectly centered in the viewport.
It isn't easy at all to put a feature in the exact center of the viewport.

Wouldn't it be great to make whatever is under the mouse "locked" at that position whatever zoom level a user changes to ?
At least for zoom in. Not sure about zoom out


#1 Updated by Sandro Santilli about 10 years ago

Uhm, I found out that it is actually "kind of" easy to put a point to the center: select ZoomIn tool, click on the point.
And once you are at it you probably want the center to stick.
Ouch. Maybe a modifier (SHIFT-wheel) would be acceptable ?

#2 Updated by Sandro Santilli about 10 years ago

I found this snippet in qgsmapcanvas.cpp:

case WheelZoomToMouseCursor:
// zoom map to mouse cursor

Does it mean what I'm asking is supposed to be already implemented ? In that case it's a bug!

#3 Updated by Sandro Santilli about 10 years ago

  • Resolution set to invalid
  • % Done changed from 0 to 100
  • Status changed from Open to Closed

Great, fixed without a line of code (stupid me).
It's already optional !!
For the occasional reader: Settings->Options->Map_tools->Panning_and_zooming->Mouse_wheel_action

Cheers !

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