                            JpegNavigator v0.5
                            ==================

JpegNavigator is still not fully completed, so several (or a good many)
functions may be added soon and anything may change until it is reached v1.0.
And a good help file will be there, of course. And bugs fixed... :)

JpegNavigator is an image viewer designed to conveniently display scanned
paintings, photoshots, or any images that use far more than 256 colors. This
is why JPEG format is chosen.


The main window
---------------

The main window consists of the control panel at the top and the view area at
the bottom. You can show or hide the control panel by pressing SPACE or ENTER
keys. Also you can drag the divider to enlarge or shrink the size of both
areas.

The control panel is divided into the folder view at the left side and the
content view at the right side (you can drag their divider too). The folder
view is identical to that in Windows Explorer. The content view displays all
JPEG-files found in the folder currently selected in the folder view. The files
can be displayed as small thumbnails, big thumbnails and multi-column list.

At the bottom of the view area the name bar may appear. It contains only
a single line displaying the name of the current file.


The menu
--------

File
    Small Thumbnails
        Makes the content view of the control panel display its files as small
        thumbnails.
    Big Thumbnails
        Makes the content view of the control panel display its files as big
        thumbnails.
    List
        Makes the content view of the control panel display its files as
        multi-column list.
    Copy Image
        Copies the current image into the Windows Clipboard.
    Exit
        Closes the application. ESC key can also be used if 'Exit by ESC key'
        option is checked in the 'Options' dialog.

View
    Full screen
        Switches the full-screen mode on and off (you can use Alt+ENTER
        shortcut). In the full-screen mode the main window covers all the
        screen and its title bar is not displayed. Moreover, when the control
        bar is hidden, there is nothing on the screen except the current image
        and the name bar.
    Name Bar
        Shows and hides the name bar.
    No fitting
        Prevent the current image from fitting into the view area, i. e. it is
        displayed in its original size.
    Fit Horizontally
        Stretches or squeezes the current image so that its width exactly fits
	the width of the view area.
    Fit Vertically
        Stretches or squeezes the current image so that its height exactly fits
	the height of the view area.
    Fit Both Directions
        Stretches or squeezes the current image so that it exactly fits the
        view area.
    Increase Gamma
        Increases the Gamma value of the current image by some small extent and
        the image becomes brighter (JpegNavigator doesn't change the image
        file).
    Increase Gamma
        Decreases the Gamma value of the current image by some small extent and
        the image becomes darker (JpegNavigator doesn't change the image file).
    Reset Gamma
        Restores the Gamma to its original value (JpegNavigator doesn't change
        the image file).
    No rotation
        Displays the current image without any rotation.
    Rotate Clockwise
        Displays the current image rotated by 90 degrees clockwise
	(JpegNavigator doesn't change the image file).
    Rotate Upside-down
        Displays the current image rotated by 180 degrees (JpegNavigator
        doesn't change the image file).
    Rotate Counter-clockwise
        Displays the current image rotated by 90 degrees counter-clockwise
	(JpegNavigator doesn't change the image file).
    Flip Horizontally
        Displays the current image mirrored horizontally (JpegNavigator doesn't
        change the image file).
    Flip Vertically
        Displays the current image mirrored vertically (JpegNavigator doesn't
        change the image file).
    Image properties
        Displays the Image Properties window. It is a report divided into two
        columns: the tags and its values. The 'Close' button just closes the
        window. The 'Copy report' button copies all the report into the Windows
        Clipboard as a plain-text. The image perperties include the standard
        file properties (name, folder, size, date, etc.) and Exif data if it's
        found. Exif data are usually the tags added to the image file by
        digital photo cameras (they include resolution, exposure time, focal
        length, etc.)

Tools
    Adjust Slide Show
        Displays a dialog box in which you can select:
            Delay: the delay between images in seconds,
            Forward/Backward: the sequence direction,
            Repeat: check if you want the slide show to begin the sequence
                    again when it reached the first or the last file.
    Start/Stop Slide Show
        Starts or stops the slide show.
    Options
        Displays the Options dialog box which is described below.


The Options dialog box
----------------------

Enable Dithering
    The dither is a method to render more colors than the current video mode
    can cupport. 256-color video modes can use only 216 colors to display the
    image and High-color (16-bit) video modes can use only 32768 or 65536
    colors. To display high-quality images or photoshots in such modes
    JpegNavigator uses patterns of small points. Usually you don't need to
    disable this feature because the quality of display becomes very low.
Enable High-quality Subsampling
    If fitting image to the size of the view area requires squeezing,
    JpegNavigator can use high-quality but slower algorithm to choose the color
    or each pixel. However, in many images disabling this option doesn't affect
    the apparent display quality.
Zoom with Interpolation
    If fitting image to the size of the view area requires stretching,
    JpegNavigator can use the interpolation, so that each stretched pixel
    doesn't become a colored square, but represents the gradual transformation
    of the nearby colors.
Exit by ESC Key
    Check if you want JpegNavigator to close as you press the ESC key.
Allow to use Exif to get thumbnails
    Many photoshots that received from digital cameras contain internal
    thumbnails. Check this option if you want to use that thumbnails instead of
    squeezing the original image. That greatly improves the speed of preparing
    thumbnails, but there is a problem with their orientation: many cameras
    cannot save the image orientation relative to the horizon.
Associate with *.JPG and *JPEG files
    Check to make JpegNavigator to display all of your *.JPG and *.JPEG files
    by double-clicking them in Windows Explorer.

===============================================================================

Copyright 2003 Roman A. Pivovarov

This software is based in part on the work of the Independent JPEG Group


                                NO WARRANTY

BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY FOR THE
PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW.  EXCEPT WHEN OTHERWISE
STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES PROVIDE THE
PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED,
INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
AND FITNESS FOR A PARTICULAR PURPOSE.  THE ENTIRE RISK AS TO THE QUALITY
AND PERFORMANCE OF THE PROGRAM IS WITH YOU.  SHOULD THE PROGRAM PROVE
DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, REPAIR OR
CORRECTION.

===============================================================================

Contact Information:

 Web-site: http://ktk.ru/~camelot/nokken
       or: http://pivovaroff.0catch.com

   E-mail: nokken@gamebox.net
       or: camelot@ktk.ru
