On the toolbar of the Lab GUI a row of icons or buttons is displayed as soon as the Digilib Editor is active.
- ScaleUp/ScaleDown: The image can be scaled down or up, that
means the overall size can be reduced with
or enlarged with 
. - ZoomArea: after clicking the button
you can zoom into an
area on the image by clicking on the upper left corner of the area
first and then the lower right corner. After the first click a red
rectangle appears to indicate the currently selected area. After
the second click the image is replaced with a zoomed view of the
selected area. - ZoomFull: The button
zooms out and shows the whole
image. - Rotate: The button
opens a slider control to rotate the image. - Mirror Vertical: The button
mirrors the image vertically
(top-down) - Mirror Horizontal: The button
mirrors the image horizontally
(left-right). - Contrast: The button
opens a
slider to change the contrast of the image. - Brightness: The button
opens a
slider to change the brightness of the image.
These buttons present the most important functionalities that can also be operated by the advanced controls in the Properties View.
Attachments:
size-bigger.png
(image/png) size-smaller.png
(image/png) zoom-area.png
(image/png) zoom-full.png
(image/png) rotate.png
(image/png) mirror-vertical.png
(image/png) mirror-horizontal.png
(image/png) contrast.png
(image/png) brightness.png
(image/png)