NAME

    X11::PngViewer - Png Viewer in X11

VERSION

    Version 0.09

SYNOPSIS

        use X11::PngViewer();
     
        my $viewer = X11::PngViewer->new();
        my $directory = File::HomeDir->my_pictures();
        my $handle = DirHandle->new($directory) or die "No slideshow from $directory:$!";
        while(my $entry = $handle->read()) {
            if ($entry =~ /[.]png/smx) {
                $viewer->show(File::Slurper::read_binary(File::Spec->catfile($directory, $entry)));
                sleep 1;
            }
        }
        

DESCRIPTION

    This is a simple PNG image viewer for X11, intended for slideshows,
    etc.

SUBROUTINES/METHODS

 new

    This method creates a new X11 window at the maximum possible size, and
    if possible, full screens the new X11 window as well

 show

    This method accepts the contents of a PNG file, clears the X11 window
    and displays the image in the center of the X11 window

DIAGNOSTICS

    Cannot connect to X server

      The module was unable to connect to a X11 server. Check the contents
      of the DISPLAY environment variable.

CONFIGURATION AND ENVIRONMENT

    X11::PngViewer will use the DISPLAY variable to try to connect to an X
    Server.

DEPENDENCIES

    X11::PngViewer requires no non-core Perl modules

INCOMPATIBILITIES

    None reported.

BUGS AND LIMITATIONS

    No bugs have been reported.

    Please report any bugs or feature requests to
    bug-x11-pngviewer@rt.cpan.org, or through the web interface at
    http://rt.cpan.org.

SEE ALSO

      * X11::Xlib

      * Image::PNG::Libpng

      * Time::Slideshow

AUTHOR

    David Dick <ddick@cpan.org>

ACKNOWLEDGEMENTS

    Thanks to the authors of the documentation in the following sources;

      * Perl and XS <https://www.lemoda.net/xs/xs-intro/set-bit.html>

      * Xlib Manual <https://tronche.com/gui/x/xlib/>

      * PNG - The Definite Guide
      <http://www.libpng.org/pub/png/book/toc.html>

LICENSE AND COPYRIGHT

    Copyright (c) 2018, David Dick <ddick@cpan.org>. All rights reserved.

    This module is free software; you can redistribute it and/or modify it
    under the same terms as Perl itself. See "perlartistic" in
    perlartistic.

DISCLAIMER OF WARRANTY

    BECAUSE THIS SOFTWARE IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
    FOR THE SOFTWARE, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT
    WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER
    PARTIES PROVIDE THE SOFTWARE "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 SOFTWARE IS WITH
    YOU. SHOULD THE SOFTWARE PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL
    NECESSARY SERVICING, REPAIR, OR CORRECTION.

    IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
    WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR
    REDISTRIBUTE THE SOFTWARE AS PERMITTED BY THE ABOVE LICENCE, BE LIABLE
    TO YOU FOR DAMAGES, INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL, OR
    CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OR INABILITY TO USE THE
    SOFTWARE (INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR DATA BEING
    RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A
    FAILURE OF THE SOFTWARE TO OPERATE WITH ANY OTHER SOFTWARE), EVEN IF
    SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
    DAMAGES.

