Description:
The "Zoom Out" and "Zoom In" buttons in the toolbar that appears while using the Print Preview in LibreOffice Calc do the opposite of what their icon and tooltip indicate. So, clicking on "Zoom Out" enlarges the preview, and clicking on "Zoom In" makes the preview smaller. 
As a workaround I changed the icons to reflect what the buttons do, but renaming the commands did not change the button's tooltips. So, after customizing the toolbar, the icons were correct but the tooltips were not (which can be more confusing).

Steps to Reproduce:
1. Open a spreadsheet using LibreOffice, or make a new one and put in some data.
2. Go to the Print Preview (using any obvious method, for example, File → Print Preview)
3. Press the Zoom Out / Zoom In buttons in the Print Preview toolbar.

Actual Results:
Pressing "Zoom Out" enlarges the preview (so, zooming in).
Pressing "Zoom In" makes the preview smaller (so, zooming out).

Expected Results:
Pressing "Zoom Out" should make the preview smaller.
Pressing "Zoom In" should enlarge the preview.


Reproducible: Always


User Profile Reset: Yes


OpenGL enabled: Yes

Additional Info:
I have tested this in LibreOffice Calc 7.1.3.2 on Linux from the .deb packages from libreoffice.org and from the software center in Fedora. I have also tested this in LibreOffice Calc 7.1.4.2 on Windows 10 from the installer from libreoffice.org. On all systems I have tested this bug in and out of Safe Mode. The problem was recreated in all tests.