The Navigation dialog is designed to offer easy movement around the active image if the zoom is set higher than what the image window can display. If this is the case, there is an inversely colored rectangle that shows the location of the current view area in respect to the image. This rectangular outline can be dragged to change the viewing region.
The “Navigation” dialog is a dockable dialog; see the section Section 2.3, “Dialogs and Docking” for help on manipulating it.
You can access it:
from the image menu:
→ → ;from the Tab menu in any dockable dialog by clicking on and selecting → ,
from the image-menu:
→ .You can access more quickly to it (but without the zoom functions) by clicking on the icon at the right bottom corner of the image window:
It allows easy zoom level control, more precise than with the Zoom command.
Zoom Out Zoom In and Zoom 1:1 are self explanatory.
The zoom ratio is adjusted so that the whole image becomes visible in the the window as it is.
The image size and the zoom are adjusted so that the image is fully displayed with the lesser zoom.
Restore the image window to the size which allows the image to be fully displayed with the zoom unchanged. This command is also as menu entry available. See Section 5.5, “Shrink Wrap” for the details.