Standalone Viewer

These options affect the Standalone Image viewer - the Opus viewer that opens in a separate window. Options that affect the Viewer Pane are configured on a separate page.

• Auto-size viewer window: Normally the viewer will remember the size and position of its window from one use to the next. If you turn this option on then when the viewer opens it will automatically resize itself; the options available for this are:
  • To fit every picture: The viewer will resize to fit the first picture, and resize itself for every subsequent picture as well.
  • To fit the first picture: The viewer will resize itself to fit the first picture only.
  • Full screen: The viewer will always open in full-screen mode.
• Center viewer window: This causes the viewer window to be centred on the screen. If this is turned off you can position the viewer where you like and it will remember its position in future.
• Cycle through pictures with mouse wheel: If this option is on, scrolling the mouse wheel over the viewer will have the effect of moving forwards and backwards through the current picture list. This is a three-way checkbox:
  • : The next or previous picture will be displayed when the mouse wheel is moved.
  • : Wheel movements accumulate and several quick wheel movements can move you several places forward or back in the list of images without loading each image in between. (On mice with 'smooth' wheels, this could make it easy to accidentally skip images by turning the wheel too much.)
  • : The mouse wheel does not cycle images; instead, it will scroll the current image up and down.
  The viewer ignores this setting when viewing some file types. For example, when viewing a text file the wheel always scrolls up and down.
• Double-click viewer to start slideshow: If this option is on you can double-click the image in the viewer to automatically start a slideshow. This option is unavailable if the Left mouse button function below is set to Advance to next image.
• Frame picture: This option causes a frame (with shadowing) to be drawn around the image displayed in the viewer.
• Gamma-correct pictures: Use this option if you need to adjust the gamma of images for proper color reproduction on your monitor.
• Generate Next/Previous list: If this option is on, when you double-click on an image in a Lister to view it, Opus automatically builds a list of all the other images in that folder as well. This lets you move to the next or previous image in the folder, and to run a slideshow for all images in the folder, just by double-clicking one image. If turned off, only the image you double-clicked on will be added to the picture list. This doesn't affect what happens if you select one or more images and run the Show command on them - in that case, only the selected images will be in the picture list.
• Hide scrollbars: If this option is turned on the viewer will not display scrollbars even if the image is too large to fit in the display. You can pan around an image with the cursor keys, and using the mouse (depending on the options set below). Note that some viewer plugins may not support this option.
• Recycle viewer window: If this option is turned on Opus will re-use an existing viewer window when you double-click on a new file, instead of opening a new one.
• Reset zoom level for each picture: If this option is turned on then whenever you move to the next or previous image, Opus will reset the zoom level if you changed it while viewing the current image. You can choose from Fit To Page, Grow To Page or Original Size.
• Show full file path in window title: Turn this option on to display the full path to each file in the title bar of the viewer window. If turned off, only the filename will be shown.
• Use EXIF information to auto-rotate pictures: Most modern digital cameras contain an orientation sensor that records into the image the orientation of the camera when the picture was taken. If this option is turned on Opus will read the orientation information from the image and automatically rotate the displayed picture so that it appears the right way up. The actual image file on disk is not modified, only the display in the viewer.
• Wrap-around picture lists: When the viewer's picture list contains more than one image, this option causes the viewer to wrap around to the first image in the list when you try to advance past the last image (and the same option affects slideshows).
• Background color: This lets you define the background color used by the viewer. If an image doesn't completely fill the viewer's window it will be framed by this color. You can turn on the Auto option to have Opus try to pick a background color that matches the current image.
• Left mouse button: This lets you control what the left mouse button does when you click it in on the image. The options you can choose from are:
  • Select clipboard region: Lets you click and drag to select a region of the image to copy to the clipboard (or to crop to). Holding the Shift key changes the behavior to Scroll image.
  • Scroll image: Lets you pan around an image that's larger than the viewer window by click and drag. Holding the Shift key changes the behavior to Select clipboard region.
  • Advance to next image: Advances the viewer to the next image in the picture list.
  • Toggle Full Screen mode: Clicking the button will toggle full-screen mode on or off.
  • Close Viewer: Clicking the mouse button will close the viewer window.
• Middle mouse button: This lets you define what the middle mouse button does when you click it on the image; the options are the same as for the Left mouse button setting.