2.15. Zoom. Pan. Rotate

2.15.1 Zoom

To zoom an image, use one of the following methods:

Roll the mouse wheel holding the Ctrl key. Roll the wheel up to zoom in or down to zoom out.

With the Zoom tool. Activate the tool by clicking on the button and zoom the image, moving the cursor up and down. To select scale values, call the drop-down menu, clicking on the arrow on the right side of the button and select the value. To set the scale manually, select the Custom zoom... item from the drop-down menu. This tool is also available from the image context menu and from the Image main menu item.

Images are scaled relative to the point the cursor is located at.

2.15.2 Pan

There are two ways to move the image in the view window:

Move the mouse holding the wheel and the Shift key on the keyboard. This key combination is set by default. You can disable or change the setting in the Controllers tab of the Image viewer module (see Section 15.6.1).
Activate the Pan tool on the toolbar by clicking the left/right/middle mouse button. To continue work with this tool, use the button with which the tool was activated.To learn more about tool control, see Section 1.14. To move an image, move the cursor around the screen while holding down the mouse button.

This tool is also available from the image context menu and from the Image main menu item.

2.15.3 Rotate

To rotate an image by an angle multiple of 90 degrees, click on the arrow on the right side of the Rotate button on the toolbar, and select one of the four options:

Set 0°;

Set 90° clockwise;

Set 180°;

Set 90° counterclockwise.

To rotate an image by an arbitrary angle, activate the Rotate tool by clicking the left/right/middle mouse button. To continue work with this tool, use the button with which the tool was activated. To learn more about tool control, see Section 1.14. Rotate the image by moving the mouse while holding down the button that activated the tool. When you ﬁnish, click the Rotate button to deactivate the tool.

These commands are available from the image context menu. To open them, right-click on the image and select the Rotate item from the context menu.

This tool is also available from the image context menu and from the Image main menu item.