Page view

The commands in the View menu group of commands allow to change views of the currently viewed page (zooming, shifting, mirror reflection).


Zoom

A convenient way to zoom into a picture fragment is to mark this fragment by moving the mouse cursor with its left button pressed.

Zooming out is achieved by using the mouse as described above with the keyboard Ctrl key pressed.

The View -> Zoom in (>) (View -> Zoom out, (<)) commands might also be used to enlarge (reduce). These operations keep the center of the image. The default zoom-in (zoom-out) factor is zoom_factor = 1.414. It can be changed via the menu command Options -> Set zoom factor.

The following commands may be used to set the viewing frame:
View -> Fit to BB (F12),
View -> Fit to width (Ctrl+F12),
View -> Fit to height (Shift+F12).
They enlarge or reduce the image in such a way as to fit the bounding box of the viewed page (accordingly: its width or height) into the program window.

In multi-page mode: (Options -> Set multipage) the commands:
View -> Fit to BB,
View -> Fit to width,
View -> Fit to height
apply to the displayed page cluster (its total width or height).

Moving the frame


Moving the frame

The frame visible on the screen can be changed, without changing the magnification, with the following menu operations:
View -> Move -> Left,
View -> Move -> Right,
View -> Move -> Up,
View -> Move -> Down.

Moving the frame may conveniently be done with the arrow keys (cf. Appendix Shortcuts). The moving step is 1/10 of screen size, and may be changed with the menu command Options -> Set shift lenght.

The arrow key used with the Shift key causes the frame to be moved with the step multiplied by 5.

The frame might also be moved with the mouse wheel: ordinarilly – up, down, and with the Ctrl key pressed – left, right.

And finally, the frame might be moved with the mouse: with the space key pressed by dragging the mouse with its left button pressed. This corresponds to "catching-and-dragging'' of the image, as opposed to moving the frame with the arrow keys (or mouse wheel).

View -> Center (Ctrl+F11) serves to position at the center of the screen of the PostScriptpage (delimited by the bounding box) or of the page cluster when in the multi-page mode. The magnification is not changed.

View -> Align might be used to position the window relative to the page edges and corners. These functions are also accessible through the arrow, Home, End, Page Up and Page Down keys with the Ctrl key pressed.


Rotations

View -> Rotate -> 90 clockwise
View -> Rotate -> 90 anticlockwise (Ctrl+Tab)
View -> Rotate -> 180 (upsidedown)
cause the viewed image to rotate accordingly.


Mirror reflections

View -> Flip -> Horizontal
View -> Flip -> Vertical
cause the viewed image to be reflected with respect to the vertical or horizontal symmetry axis.


Reseting to defaults

View -> Reset zoom & position (F11) causes the image of the viewed page to be displayed at the center of the screen with magnification equal to 1. The current rotation and mirror reflection are left unchanged.

View -> Reset transformations (Shift+F11) causes the image of the viewed page to be displayed at the center of the screen with magnification equal 1, rotation angle equal 0 and no mirror reflection.

View -> Full screen (Shift+F5) enters full screen display mode.