e4b980cd81
Updated Arabic translation. "Open" dialog lists saved drawings first, then local starter images, then system-wide starter images. All compile-time options now listed in version output, using a new "--verbose-version" (or "-vv") command-line argument.
149 lines
4.3 KiB
Text
149 lines
4.3 KiB
Text
PNG.txt for Tux Paint
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Tux Paint - A simple drawing program for children.
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Copyright 2002-2007 by Bill Kendrick and others
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bill@newbreedsoftware.com
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http://www.tuxpaint.org/
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June 27, 2002 - June 19, 2007
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$Id$
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About PNGs
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----------
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PNG is the Portable Network Graphic format. It is an open standard,
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not burdened by patents (like GIFs). It is a highly compressed format
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(though not "lossy" like JPEGs - lossiness allows files to be much
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smaller, but introduces 'mistakes' in the image when saved), and
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supports 24-bit color (16.7 million colors) as well as a full
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"alpha channel" - that is, each pixel can have a varying degree of
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transparency.
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For more information, visit: http://www.libpng.org/
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These features (openness, losslessness, compression, transparency/alpha)
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make it the best choice for Tux Paint. (Tux Paint's support for the PNG
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format comes from the Open Source SDL_Image library, which in turn gets
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it from the libPNG library.)
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Support for many colors allows photo-quality "rubber stamp" images to
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be used in Tux Paint, and alpha transparency allows for high-quality
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"paint brushes."
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How To Make PNGs
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----------------
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The following is a very _brief_ list of ways to create PNGs or
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convert existing images into PNGs.
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Linux/Unix Users
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----------------
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The GIMP
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--------
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The best tool with which to create PNG images for use in Tux Paint is
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the GNU Image Manipulation Program ("The GIMP"), a high-quality
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Open Source interactive drawing and photo editing program.
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It's probably already installed on your Linux system. If not, it's
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almost definitely available on the install CD or from your
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distribution's download site. Otherwise:
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http://www.gimp.org/
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Krita
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-----
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Krita is a painting and image editing application for KOffice.
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http://koffice.kde.org/krita/
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NetPBM
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------
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The Portable Bitmap tools (collectively known as "NetPBM") is a
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collection of Open Source command-line tools which convert to and from
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various formats, including GIF, TIFF, BMP, PNG, and many more.
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NOTE: The NetPBM formats (Portable Bitmap: PBM,
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Portable Greymap: PGM, Portable Pixmap: PPM, and the catch-all
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Portable Any Map: PNM) do not support alpha, so any transparency
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information (e.g. from within a GIF) will be lost! Use The GIMP!
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It's probably already installed on your Linux system. If not, it's
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almost definitely available on the install CD or from your
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distribution's download site. Otherwise:
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http://netpbm.sourceforge.net/
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cjpeg/djpeg
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-----------
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The "cjpeg" and "djpeg" command-line programs convert between
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the NetPBM Portable Any Map (PNM) format and JPEGs.
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It's probably already installed on your Linux system.
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(Under Debian, this is available in the package "libjpeg-progs".)
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If not, it's almost definitely available on the install CD or from
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your distribution's download site. Otherwise:
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ftp://ftp.uu.net/graphics/jpeg/
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Windows Users
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-------------
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The Gimp
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http://www.gimp.org/~tml/gimp/win32/
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Canvas (Deneba)
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http://www.deneba.com/products/canvas8/default2.html
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CorelDRAW (Corel)
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http://www.corel.com/
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Fireworks (Macromedia)
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http://macromedia.com/software/fireworks/
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Illustrator (Adobe)
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http://www.adobe.com/products/illustrator/main.html
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Paint Shop Pro (Jasc)
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http://www.jasc.com/products/psp/
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Photoshop (Adobe)
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http://www.adobe.com/products/photoshop/main.html
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PIXresizer (Bluefive software)
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http://bluefive.pair.com/pixresizer.htm
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Macintosh Users
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---------------
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Canvas (Deneba)
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http://www.deneba.com/products/canvas8/default2.html
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CorelDRAW (Corel)
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http://www.corel.com/
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Fireworks (Macromedia)
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http://macromedia.com/software/fireworks/
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GraphicConverter (Lemke Software)
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http://www.lemkesoft.de/us_gcabout.html
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Illustrator (Adobe)
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http://www.adobe.com/products/illustrator/main.html
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Photoshop (Adobe)
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http://www.adobe.com/products/photoshop/main.html
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More Info.
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The libPNG website lists image editors and image converts that
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support the PNG format:
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http://www.libpng.org/pub/png/pngaped.html
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http://www.libpng.org/pub/png/pngapcv.html
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