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Change shortcut for zoom from Wheel to CTRL+Wheel #1517

Champal opened this Issue Apr 6, 2018 · 1 comment


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Champal commented Apr 6, 2018


GanttProject is an useful soft but as discuss here it's very annoying to change zoom level by mouse wheel.

It's the first time I look at the GanttProject source code but with this doc I successfully modify the Zoom shortcut.

In the file I modified the function mouseWheelMoved to check if CTRL key is pressed. This works fine !

  public void mouseWheelMoved(MouseWheelEvent e) {
    if (e.isControlDown()) {
      if (isRotationUp(e)) {
      } else {

What's the next step ? Add an option somewhere ?

After that I would like to assign Wheel to scroll down/up and SHIFT+Wheel to sroll left/right but it's seems to be a little more complex.
Should I add the ScrollViewInteraction in or Should I add MouseWheelEvent in ScrollViewInteraction ?


dbarashev added a commit that referenced this issue Apr 17, 2018

Changed mouse wheel behavior.
Update issue #270, issue #1517

dbarashev added a commit that referenced this issue Apr 17, 2018

@dbarashev dbarashev added this to the 2.8.7 milestone Apr 18, 2018

@dbarashev dbarashev closed this Apr 18, 2018


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Champal commented Apr 23, 2018

Wow ! impressive job, all that I wanted ! thank you.

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