Image Viewer Manual

Introduction
The Eye of MATE Image Viewer application enables you to view single image files, as well as large image collections.

Starting Image Viewer
You can start Image Viewer in the following ways:
Open an image file in Caja.
Choose Graphics Image Viewer from the Applications menu.
Run eom at the prompt in a terminal such as mate-terminal, or from the Run Application dialog.

Closing Image Viewer
To close the current Image Viewer window choose Image Close, or press Ctrl W.

Supported File Types
Image Viewer supports a variety of image file formats. The following image formats can be opened:
ANI - Animation
BMP - Windows Bitmap
GIF - Graphics Interchange Format
ICO - Windows Icon
JPEG - Joint Photographic Experts Group
PCX - PC Paintbrush
PNG - Portable Network Graphics
PNM - Portable Anymap from the PPM Toolkit
RAS - Sun Raster
SVG - Scalable Vector Graphics
TGA - Targa
TIFF - Tagged Image File Format
WBMP - Wireless Bitmap
XBM - X Bitmap
XPM - X Pixmap
Image Viewer supports the following formats for saving:
BMP - Windows Bitmap
ICO - Windows Icon
JPEG - Joint Photographic Experts Group
PNG - Portable Network Graphics
Image Viewer may be able to open and save other image formats, depending on your system configuration and other installed software.

Image Viewer Features
Image Viewer has a variety of features to help you view your images. You can zoom in and out or view the image full screen. Regardless of your zoom level, Image Viewer uses a low amount of memory. You can also rotate and flip the image you are viewing.
The collection view allows the viewing and editing of large image collections. In this view image operations can be applied to all selected images at once.
Image Viewer has special support for digital camera pictures and displays EXIF metadata recorded with the image. This feature requires libexif to be installed on your system. All modifications made in JPEG images are lossless. That is, saving rotated and flipped JPEG images will not recompress the image. Beside this all available metadata (like EXIF) will be preserved and updated accordingly.

Getting Started
When you start Image Viewer, the following window is displayed:

Image Viewer Start Up Window
Shows Image Viewer main window. Contains titlebar, menubar, toolbar, and display area. Menubar contains File, Edit, View, and Help menus.
The Image Viewer window contains the following elements:
Menubar 	 The menus on the menubar contain all the commands that you need to work with images in Image Viewer.
Toolbar 	 The toolbar contains a subset of the commands that you can access from the menubar. To show or hide the toolbar, choose View Toolbar.
Display area 	 The display area shows the image file.
Statusbar 	 The statusbar provides information about the image. To show or hide the statusbar, choose View Statusbar.
Image Collection 	 The image collection shows you all supported images in the current working directory. It shows up once an image has been loaded. To show or hide the collection, choose View Image Collection or press Ctrl F9.
Side Pane 	 The side pane provides further information about the current image, for example EXIF metadata (if available). It shows up after an image has been loaded. To show or hide the side pane, choose View Side Pane or press F9.
Most actions in Image Viewer can be performed several ways. For example, you can open a file in the following ways:
Drag an image file into the Image Viewer window from another application or window.
Double-click on an image file in the file manager or other application.
Choose Image Open and select an image file in the Load Image dialog.
Press Ctrl O and select an image file in the Load Image dialog.

Viewing Images

Opening an Image
To open an image, perform the following steps:
Choose Image Open , or press Ctrl O .
In the Open Image dialog, select the file you want to open.
Click Open. Image Viewer displays the name of the image file in the titlebar of the window.
To open another image, choose Image Open again. Image Viewer opens each image in a new window.

Viewing the Images in a Folder
To view all images in a folder, perform the following steps:
Open one of the images in the folder (see Opening an Image).
Open the image collection by choosing View Image Collection or pressing Ctrl F9.
The collection shows thumbnails of all supported images in the folder. You can browse the images by clicking on an image in the collection, by choosing the appropriate option in the Go menu or by pressing Alt Left or Alt Right.
To view all the directory images in fullscreen, choose View Full Screen or press F11. To view them as a slide show, choose View Slideshow or press F5. To return to the collection view, press the Esc key, or Ctrl W. For more information about how to customize the slide show, see Slideshow.

Scrolling an Image
To scroll around an image that is larger than the image window or full screen view, you can use the following methods:
Use the arrow keys on the keyboard.
Drag the image to move it in the window. (This means you drag the image in the opposite direction you want to scroll in: to scroll down the image, drag it upwards in the window.)
Use the scrollbars on the window.

Zooming
You can zoom in or out of the image in the following ways:
Use the scroll wheel on your mouse. Scrolling down zooms out; scrolling up zooms in.
Choose View Zoom In or View Zoom Out. To restore the image to its original size, choose View Normal Size. To make the image fit in the window, choose View Best Fit.
Use the zoom buttons in the toolbar. Normal will restore the picture to its original unscaled size. Fit will resize the image so it will fit in the window if it is too large.
Use the keyboard. To zoom in, Ctrl + or +. To zoom out, Ctrl - or -. To go back to the normal size, Ctrl 0 or 1. To scale the image to fit the window, press F.
When an image is zoomed to fit the window, resizing the window will also change the zoom level, so the image still fits the window.

Viewing an Image Full Screen/Slideshow
To show the image using the entire screen, choose View Full Screen.
No panels, window frames, or menubars are visible when an image is shown like this. To return to the normal view, press Esc, or F11.
You can zoom or scroll around the image in the same way as when it is shown in a window, using the mouse or the keyboard.
If you have multiple images in your collection you can press Space or use the right/down cursor keys to advance to the next image. The previous image can be reached by pressing Backspace or using the left/up cursor keys.
In this case you can also use the slideshow mode, where Image Viewer automatically switches to the next image in your collection. You can start a slideshow by choosing View Slideshow or by pressing F5. The slideshow can be paused/continued by pressing P. To stop the slideshow, press the Esc or F5 key, or Ctrl W. For more information about how to customize the slide show, see Slideshow.

Manipulating Images
All image manipulations apply to all selected images at once. The modifications are done in memory and alter the original files on disk only when the images are saved with the save function (see Saving an Image).

Flipping an Image
To flip an image along the horizontal axis of the image, choose Edit Flip Horizontal .
To flip an image along the vertical axis of the image, choose Edit Flip Vertical .

Rotating an Image
To rotate an image 90 degrees in a clockwise direction, choose Edit Rotate Clockwise .
To rotate an image 90 degrees in an anticlockwise direction, choose Edit Rotate Counterclockwise .

Undoing an Action
To undo a flip or rotate action, choose Edit Undo or press Ctrl Z .

Deleting an Image
To move an image to the Trash, choose Edit Move to Trash . This moves the file to the Trash folder. Multiple images can also be moved to the trash in the same way: select them all first.
To restore an image from the Trash, open the Trash folder in Caja file manager and move the image file to another folder. To delete the image permanently, empty the Trash. To find out more about using the Trash, see the Desktop User Guide.
You can also use the Del key to move an image to the Trash, in which case you will be asked for confirmation.

Saving Images
Image Viewer always tries to choose the save method with the least impact to the image data. For example, if an otherwise unmodified image is saved under a different name in the same format, the file is simply copied. If libjpeg is available on the system all JPEG image modifications are done without loss of image information.

Saving an Image
To save an image, choose Image Save . The image will be saved under the same name and file type. Therefore, unmodified images needn't be saved.

Saving an Image under a Different Name
To save an image under a different name, or convert it to a different file type, choose Image Save As .
Specify the filename in the Name field in the Save Image dialog, then click Save. The file is saved in the current folder by default. Image Viewer tries to determine the file type from the given filename suffix. If the image should be saved in another folder or the file type detection failed, expand the dialog by clicking on Browse for other folders. This allows further folder navigation and the specification of the file type from the drop down box.
You can save multiple images at once: see the next section.

Saving Multiple Images
Saving multiple images at once allows you to convert several images to a different format, or give them similar filenames.
To save multiple images, select the images and choose Image Save As . The following window is displayed:

Save As dialog for multiple images
Shows Eye of MATE Save As dialog when saving multiple images.
The folder in which the images will be saved is specified by the Destination folder drop-down box. Initially the folder is set to the current folder. Select Other... from the drop-down list to open a standard open folder dialog for browsing the filesystem. The resulting filename for each image is specified by Filename format. The filename schema is constructed by simple characters and special tags. The following special tags are available:
Filename (%f) - Original filename without the fileformat suffix.
Counter (%n) - Auto-incremented number (starts at specified counter start).
Everything but these special tags are considered normal text.
The image format is determined by the drop-down box after the schema definition. Select a specific image format or use the as is option to state that the same format as the original file should be used.
The Options section allows to remove all space characters by underscores in the resulting filename if Replace spaces with underscores is checked. The Start counter at spin box determines at which number the counter starts if you use the %n tag for the file format specification.
The File Name Preview section of the dialog shows the resulting file name according to the above settings for an example filename from the selected images.

Printing Images

Setting your Page Settings
Before printing you need to set the page settings you would like to use. To do that choose Image Page Setup.
In the Page Setup dialog you can now choose paper size and orientation. If possible, configure your printer to have the page borders set correctly.

Printing an Image
To print an image, perform the following steps:
Select Image Print
In the Print dialog, select the printer you want to use from the list.
Click Print. Image Viewer starts printing now.
Images that are too large for the page are automatically scaled down to fit the page. Images that are smaller than the page are centered on it.
Please note that Image Viewer is currently lacking progress reporting while printing. During that time the user interface might become unresponsive for a short time.

Arranging an Image on the Page
Maybe you don't want your image centered or want it scaled down even further. To do that you need to open the Print dialog (see Printing an Image) and then select the Image Settings tab which offers you the following options:
The options in the Position section allow you to change the images position on the page.
It is also possible to position the image on the page by dragging it around in the Preview field.
The options in the Size section allow you to scale your image to your liking. Scaling is limited by either the image size or by the page size, depending on what condition is met first.
The Unit option allows you to change the metric unit which is used by the options on the Image Settings tab. When you change this option the other fields values are converted accordingly.

Personalizing The Toolbar
Image Viewer's default toolbar contains only a basic set of items to keep it simple. But you can modify the toolbar if you prefer a different set.

Modifying the Toolbar
If you want to modify the toolbar you need to open the toolbar editor by going to Edit Toolbar. The following window will pop up:

The toolbar editor window
Shows Eye of MATE toolbar editor window.
It contains the items that are not in the toolbar and the separator item. You can now edit the toolbar:
To add new items to the toolbar, drag them from the toolbar editor to the toolbar.
To remove items from the toolbar, drag them from the toolbar to the toolbar editor.
To rearrange items on the toolbar, drag them to their new position on the toolbar.
When you have finished editing the toolbar, click the Close button in the toolbar editor window. This will close the toolbar editor and make your modified toolbar active.

Resetting the Toolbar
To revert your changes to the toolbar and return to the default layout, perform the following steps:
Open the toolbar editor (see Modifying the Toolbar).
Click the Reset to Default button.
Click the Close button to close the toolbar editor. The toolbar has been reset to the default layout now.

Preferences
Preferences can be changed by going to Edit Preferences. You will be able to change the options for image viewing and slide shows. The changes apply to all open windows instantly.

Image View
Image Enhancements 	 Select the Smooth images when zoomed option to enable image smoothing when you change the image's zoom factor. If you select this option, your images will be smoothed to improve their display quality while viewing them with Image Viewer.
If you select the Automatic orientation option, your images will be rotated on loading according to their metadata. For example portraits are automatically rotated upright. Note that this function requires a correctly set orientation tag in the image's metadata and thus does not work with all images. The rotation is not saved until you save the rotated image (see Saving Images).
Transparent Parts 	 Select one of the following options to determine how Image Viewer displays transparent parts of an image:
As check pattern
Displays any transparent parts of the image in a check pattern.
As custom color
Displays any transparent parts of the image in a solid color that you specify. Click on the color selector button to select a color.
As background
Displays any transparent parts of the image in the background color of the Image Viewer application.

Slideshow
Image Zoom 	 Select the Expand images to fit screen option to enlarge images to fit the screen during the slide show. If you do not select this option, images that are smaller than the screen size are not resized to fit the screen.
Sequence 	 Select the Loop sequence option to cycle endlessly through the list of images during the slide show. If you do not select this option, the slide show returns to the collection view after the last image is displayed.
Use the Switch image after ... seconds spin box to specify how long each image is displayed during the slide show. If you set this value to zero, the auto advance function is disabled and only manual browsing is available (see Viewing an Image Full Screen/Slideshow).