wxyzv:  yet another image viewer

Copyright (C) 1999 David Flater

This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with this program.  If not, see <http://www.gnu.org/licenses/>.

Where to find it

Source distribution: ftp://ftp.flaterco.com/wxyzv/
Copy of the README: http://www.flaterco.com/wxyzv.html

Requirements

• X11R6 or equivalent
• True color display at least 15 bits deep
• libjpeg 8.0 or newer
• libpng 0.96 or newer
• C++ compiler

Features

• Supports JPEG, PNG, and raw PPM with maxval=255
• Provides rotation, gamma adjustment, sharpening, and nonlinear smoothing
• Makes best effort on corrupted JPEGs and PNGs
• Centers image on screen
• Efficiently downscales oversized JPEGs

Limitations

• Will not use anything but true color visual
• Chokes on PNM other than raw PPM with maxval=255
• PNGs with "clever" attributes will get one of the following:
  • Flattened to 24-bit RGB
  • Mangled
  • Segmentation fault

Installation

wxyzv is packaged with the popular and portable GNU automake, so all usual GNU tricks should work.  Help on configuration options can be found in the INSTALL file or obtained by entering ./configure --help.

Normally, one should only need to do the following to compile and install wxyzv:

bash$ ./configure
bash$ make
bash$ su
bash# make install

Usage

wxyzv file [file...]

space                            go to next image
p or P                           go back to previous image
q or Q                           quit
up arrow / mouse roller          adjust gamma (brighter)
down arrow / mouse roller        adjust gamma (darker)
left arrow / mouse button        smoother
right arrow / mouse button       sharper
r                                rotate clockwise
R                                rotate counterclockwise
f or F                           toggle JPEG scaling

Maintenance

Send bug reports to dave@flaterco.com.

There is no time budgeted to add features to this program since many full-featured alternatives already exist.  In other words, "If you want xv, you know where to find it."

Change log

wxyzv 1.1.1 (2011-03-30)

• Relicensed under GPLv3.
• Fixed segfault occurring on x86-64.
• Fixed jpeg scaling, which was broken by changes made in libjpeg version 7.  Version 8 of libjpeg is now required.
• Fixed libpng deprecation.
• Automake'd the build process.
• Random cleanups.

wxyzv 1.1 (2006-04-09)

Added rotation feature.  Fixed miscellaneous code rot.

wxyzv 1.0 r2 (2005-06-16)

Documentation changes only:  updated e-mail address, synced with web page.

wxyzv 1.0 (2000-01-02)

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