619 lines
23 KiB
HTML
619 lines
23 KiB
HTML
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
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<html><head><title>Extending Tux Paint</title>
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<meta http-equiv="Content-Type" content="text/html; charset=us-ascii">
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</head>
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<body bgcolor="#FFFFFF" text="#000000" link="#0000FF" vlink="#FF0000"
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alink="#FF00FF">
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<center>
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<h1><img src="images/tuxpaint-title.png" width=220 height=219
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alt="Tux Paint"><br>
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version
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0.9.16
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<br>
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Extending Tux Paint</h1>
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<p>Copyright 2002-2006 by Bill Kendrick and others<br>
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New Breed Software</p>
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<p><a href="mailto:bill@newbreedsoftware.com">bill@newbreedsoftware.com</a><br>
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<a href="http://www.newbreedsoftware.com/tuxpaint/">http://www.newbreedsoftware.com/tuxpaint/</a></p>
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<p>June 14, 2002 - September 3, 2006</p>
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</center>
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<hr size=2 noshade>
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<p>If you wish to add or change things like Brushes and Rubber Stamps
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used by Tux Paint, you can do it fairly easily by simply putting
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or removing files on your hard disk.</p>
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<p>Note: You'll need to restart Tux Paint for the changes to take
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effect.</p>
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<h2>Where Files Go</h2>
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<blockquote>
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<h3>Standard Files</h3>
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<blockquote>
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<p>Tux Paint looks for its various data files in its
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'data' directory.</p>
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<h4>Linux and Unix</h4>
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<blockquote>
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<p>Where this directory goes depends on what value was set for
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"<code>DATA_PREFIX</code>" when Tux Paint was built. See
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INSTALL.txt for details.</p>
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<p>By default, though, the directory is:</p>
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<blockquote><code>
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/usr/local/share/tuxpaint/
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</code></blockquote>
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<p>If you installed from a package, it is more likely to be:</p>
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<blockquote><code>
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/usr/share/tuxpaint/
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</code></blockquote>
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</blockquote>
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<h4>Windows</h4>
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<blockquote>
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<p>Tux Paint looks for a directory called 'data' in the same
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directory as the executable. This is the directory that the
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installer used when installing Tux Paint e.g.:</p>
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<blockquote><code>
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C:\Program Files\TuxPaint\data
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</code></blockquote>
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</blockquote>
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<h4>Mac OS X</h4>
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<blockquote>
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<p>Tux Paint stores its data files inside the "Tux Paint"
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icon (which is actually a special kind of folder on
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Mac OS X). The following steps explain how to get to
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the folders within:</p>
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<ol>
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<li>Bring up a 'context' menu by holding the [Control] key and clicking
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the Tux Paint icon the in Finder. (If you have a mouse with more
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than one button, you can simply right-click the icon.)</li>
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<li>Select "Show Contents" from the menu that appears.
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A new Finder window will appear with a folder inside called
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"Contents."</li>
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<li>Open the "Contents" folder and open the "Resources" folder found
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inside.</li>
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<li>There, you will find the "starters", "stamps" and "brushes"
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folders. Adding new content to these folders will make the content
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available to any user that launches this copy (icon) of
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Tux Paint.</li>
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</ol>
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<p><em>Note:</em> If you install a newer version of Tux Paint
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(by replacing its icon), you will lose changes made by following
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the instructions above, so keep backups of your new content
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(stamps, brushes, etc.).</p>
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<p>Tux Paint also looks for files in a "TuxPaint" folder
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that you can place in your system's "Application Support" folder
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(found under "Library" at the root of your hard disk):</p>
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<blockquote><code>
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/Library/Application Support/TuxPaint/
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</code></blockquote>
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<p>It also looks for files in the user's "Preferences" folder,
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e.g.:</p>
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<blockquote><code>
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/Users/<i>(user name)</i>/Library/Preferences/TuxPaint/brushes/
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</code></blockquote>
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</blockquote>
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</blockquote>
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<hr size=1 noshade>
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<h3>Personal Files</h3>
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<blockquote>
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<p>You can also create brushes, stamps, fonts and 'starters' in your
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own directory (folder) for Tux Paint to find.</p>
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<h4>Windows</h4>
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<blockquote>
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<p>Your personal Tux Paint folder is stored in your
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"Application Data". For example, on newer Windows (set up
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for an English-speaking user):</p>
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<blockquote><code>
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C:\Documents and Settings\<i>(user name)</i>\Application
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Data\TuxPaint\
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</code></blockquote>
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</blockquote>
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<h4>Mac OS X</h4>
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<blockquote>
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<p>Your personal Tux Paint folder is stored in your
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"Library" folder:
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<blockquote><code>
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/Users/<i>(user name)</i>/Library/Application Support/
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Tux Paint/</code>
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</code></blockquote>
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</blockquote>
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<h4>Linux and Unix</h4>
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<blockquote>
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<p>Your personal Tux Paint directory is
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"<code>$(HOME)/.tuxpaint/</code>" (also known as
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"<code>~/.tuxpaint/</code>".</p>
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<p>That is, if your home directory is "<code>/home/karl</code>", then
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your Tux Paint directory is
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"<code>/home/karl/.tuxpaint/</code>".</p>
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<p>Don't forget the period ("<code>.</code>") before the
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'<code>tuxpaint</code>'!</p>
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</blockquote>
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<p>To add brushes, stamps fonts, and 'starters,' create subdirectories
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under your personal Tux Paint directory named
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"<code><b>brushes</b></code>", "<code><b>stamps</b></code>",
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"<code><b>fonts</b></code>" and
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"<code><b>starters</b></code>" respectively.</p>
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<p>(For example, if you created a brush named "<code>flower.png</code>",
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you would put it in "<code>~/.tuxpaint/brushes/</code>" under Linux or
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Unix.)</p>
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</blockquote>
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</blockquote>
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<hr size=1 noshade>
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<h2>Brushes</h2>
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<blockquote>
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<p>The brushes used for drawing with the 'Brush' and 'Lines' tools in
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Tux Paint are simply PNG image files.</p>
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<img src="images/brush_edit.png" width=123 height=147 alt="" align=right>
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<p>The alpha (transparency) of the PNG image is used to determine the shape
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of the brush, which means that the shape can be 'anti-aliased' and even
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partially-transparent!</p>
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<p>Greyscale pixels in the brush PNG will be drawn using the
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currently-selected color in Tux Paint. Color pixels will be
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tinted.</p>
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<p>Brush images should be no wider than 40 pixels across and
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no taller than 40 pixels high. (i.e., the maximum size
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can be 40 x 40.)</p>
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<h3>Brush Options</h3>
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<blockquote>
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<p>Aside from a graphical shape, brushes can also be given other
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attributes. To do this, you need to create a 'data file'
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for the brush.</p>
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<p>A brush data file is simply a text file containing the options.</p>
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<p>The file has the same name as the PNG image, but a "<code>.dat</code>"
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extension. (e.g., "<code>brush.png</code>"'s data file is the text
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file "<code>brush.dat</code>" in the same directory.)</p>
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<h4>Animated Brushes</h4>
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<blockquote>
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<p>As of Tux Paint version 0.9.16, you may now create animated
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brushes. As the brush is used, each frame of the animation is
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drawn.</p>
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<p>Lay each frame out across a wide PNG image. For example,
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if your brush is 30x30 and you have 5 frames, the image should
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be 150x30.</p>
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<p>Add a line containing the line "<code><b>frames=<i>N</i></b></code>"
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to the brush's data file, where <i>N</i> is the number of frames
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in the brush.</p>
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</blockquote>
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<h4>Directional Brushes</h4>
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<blockquote>
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<p>As of Tux Paint version 0.9.16, you may now create directional
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brushes. As the brush is used, different shapes are drawn, depending
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on the direction the brush is going.</p>
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<p>The directional shapes are divided into a 3x3 square in a PNG image.
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For example, if your brush is 30x30, the image should be 90x90, and
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each of the direction's shapes placed in a 3x3 grid. The center
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region is used for no motion. The top right is used for motion that's
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both up, and to the right. And so on.</p>
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<p>Add a line containing the line "<code><b>directional</b></code>"
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to the brush's data file.</p>
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</blockquote>
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<h4>Animated Directional Brushes</h4>
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<blockquote>
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<p>You may mix both animated and directional features into one
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brush. Use both options ("<code><b>frames=<i>N</i></b></code>" and
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"<code><b>directional</b></code>"), in separate lines in the
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brush's "<code>".dat</code>" file.</p>
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<p>Lay the brush out so that each 3x3 set of directional shapes are
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laid out across a wide PNG image. For example, if the brush is 30x30
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and there are 5 frames, it would be 450x90. (The leftmost 150x90 pixels
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of the image represent the 9 direction shapes for the first frame,
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for example.)</p>
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</blockquote>
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<p>Place the brush image PNGs (and any data text files) in the
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"<code><b>brushes</b></code>" directory.</p>
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<p>Note: If your new brushes all come out as solid squares or rectangles,
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it's because you forgot to use alpha transparency! See the documentation
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file "PNG.txt" for more information and tips.</p>
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<br clear=all>
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</blockquote>
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<hr size=1 noshade>
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<h2>Stamps</h2>
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<blockquote>
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<p>All stamp-related files go in the "<code><b>stamps</b></code>" directory.
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It's useful to create subdirectories and sub-subdirectories
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there to organize the stamps. (For example, you can have a
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"<code>holidays</code>" folder with "<code>halloween</code>" and
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"<code>christmas</code>" sub-folders.)</p>
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<h3>Images</h3>
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<blockquote>
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<p>Rubber Stamps in Tux Paint can be made up of a number of separate
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files. The one file that is required is, of course, the picture
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itself.</p>
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<img src="images/stamp_edit.png" width=128 height=147 alt="" align=right>
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<p>The Stamps used by Tux Paint are PNG pictures. They can be
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full-color or greyscale. The alpha (transparency) of the PNG is
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used to determine the actual shape of the picture (otherwise you'll
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stamp a large rectangle on your drawings).</p>
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<p>The PNGs can be any size, but in practice, a 100 pixels wide by
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100 pixels tall (100 x 100) is quite large for
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Tux Paint.</p>
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<p>Note: If your new stamps all have solid rectangular-shaped outlines
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of a solid color (e.g., white or black), it's because you forgot to use
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alpha transparency! See the documentation file
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"<a href="../PNG.txt">PNG.txt</a>" for more information and tips.</p>
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<p><b>Advanced Users:</b> The <a href="ADVANCED-STAMPS-HOWTO.html">Advanced
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Stamps HOWTO</a> describes, in detail, how to make images which will
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scale perfectly when used as stamps in Tux Paint.</p>
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<br clear=all>
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</blockquote>
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<hr size=1 noshade>
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<h3>Description Text</h3>
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<blockquote>
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<p>Text (".TXT") files with the same name as the PNG.
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(e.g., "<code>picture.png</code>"'s description is stored in
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"<code>picture.txt</code>" in the same directory.)</p>
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<p>The first line of the text file will be used as the US English
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description of the stamp's image. It must be encoded in UTF-8.</p>
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<h4>Language Support</h4>
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<blockquote>
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<p>Additional lines can be added to the text file to provide
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translations of the description, to be displayed when Tux Paint
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is running in a different locale (like French or Spanish).</p>
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<p>The beginning of the line should correspond to the language code
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of the language in question (e.g., "<code>fr</code>" for French, and
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"<code>zh_tw</code>" for Traditional Chinese), followed by
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"<code>.utf8=</code>" and the translated description (encoded
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in UTF-8).</p>
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<p>There are scripts in the "<code>po</code>" directory for converting
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the text files to PO format (and back) for easy translation to
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different languages. Therefore you should never add or change translations
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in the .txt files directly.</p>
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<p>If no translation is available for the language Tux Paint
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is currently running in, the US English text is used.</p>
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</blockquote>
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<h4>Windows Users</h4>
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<blockquote>
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<p>Use NotePad or WordPad to edit/create these files.
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Be sure to save them as Plain Text, and make sure they have
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"<code>.txt</code>" at the end of the filename...</p>
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</blockquote>
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</blockquote>
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<hr size=1 noshade>
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<h3>Sound Effects</h3>
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<blockquote>
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<p>WAVE (".WAV") files with the same name as the PNG.
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(e.g., "<code>picture.png</code>"'s sound effect is the sound
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"<code>picture.wav</code>" in the same directory.)</p>
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<h4>Language Support</h4>
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<blockquote>
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<p>For sounds for different locales (e.g., if the sound is someone
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saying a word, and you want translated versions of the word said),
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also create WAV files with the locale's label in the filename, in
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the form: "<code><b>STAMP_LOCALE</b>.wav</code>"</p>
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<p>"<code>picture.png</code>"'s sound effect, when Tux Paint is run
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in Spanish mode, would be "<code>picture_es.wav</code>".
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In French mode, "<code>picture_fr.wav</code>". And so on...</p>
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<p>If no localized sound effect can be loaded, Tux Paint will
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attempt to load the 'default' sound file.
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(e.g., "<code>picture.wav</code>")</p>
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</blockquote>
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</blockquote>
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<hr size=1 noshade>
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<h3>Stamp Options</h3>
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<blockquote>
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<p>Aside from a graphical shape, a textual description, and a sound
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effect, stamps can also be given other attributes. To do this, you need
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to create a 'data file' for the stamp.</p>
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<p>A stamp data file is simply a text file containing the options.</p>
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<p>The file has the same name as the PNG image, but a "<code>.dat</code>"
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extension. (e.g., "<code>picture.png</code>"'s data file is the text
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file "<code>picture.dat</code>" in the same directory.)</p>
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<h4>Colored Stamps</h4>
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<blockquote>
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<p>Stamps can be made to be either "colorable" or "tintable."</p>
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<h5>Colorable</h5>
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<blockquote>
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<p>"Colorable" stamps they work much like brushes - you pick the stamp
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to get the shape, and then pick the color you want it to be.
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(Symbol stamps, like the mathematical and musical ones, are an
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example.)</p>
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<p>Nothing about the original image is used except the transparency
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(from "alpha" channel). The color of the stamp comes out solid.</p>
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<center><img src="images/ex_colorable.png" width=74 height=92
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alt=""></center>
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<p>Add a line containing the word "<code><b>colorable</b></code>"
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to the stamp's data file.</p>
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</blockquote>
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<h5>Tinted</h5>
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<blockquote>
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<p>"Tinted" stamps are similar to "colorable" ones, except the
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details of the original image are kept. (To put it technically,
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the original image is used, but its hue is changed, based on the
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currently-selected color.)</p>
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<center><img src="images/ex_tintable.png" width=151 height=78
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alt=""></center>
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<p>Add a line containing the word "<code><b>tintable</b></code>"
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to the stamp's data file.</p>
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<h6>Tinting Options:</h6>
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<blockquote>
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<p>Depending on the contents of your stamp, you might want to
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have Tux Paint use one of a numer of methods when tinting it.
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Add one of the following lines to the stamp's data file:</p>
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<dl>
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<dt>"<code><b>tinter=normal</b></code>" (default)</dt>
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<dd>This is the normal tinting mode.</dd>
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<dt>"<code><b>tinter=anyhue</b></code>"</dt>
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<dd>This is ???.</dd>
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<dt>"<code><b>tinter=narrow</b></code>"</dt>
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<dd>This is ???.</dd>
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<dt>"<code><b>tinter=vector</b></code>"</dt>
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<dd>This is ???.</dd>
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</dl>
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</blockquote>
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</blockquote>
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</blockquote>
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<h4>Unalterable Stamps</h4>
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<blockquote>
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<p>By default, a stamp can be flipped upside down, shown as a mirror
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image, or both. This is done using the control buttons below the
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stamp selector, at the lower right side of the screen in
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Tux Paint.</p>
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<p>Sometimes, it doesn't make sense for a stamp to be flippable or
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mirrored; for example, stamps of letters or numbers.
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Sometimes stamps are symmetrical, so letting the user flip or mirror
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them isn't useful.</p>
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<p>To make a stamp un-flippable, add the option
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"<code><b>noflip</b></code>" to the stamp's data file.</p>
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<p>To keep a stamp from being mirrored, add a line containing the word
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"<code><b>nomirror</b></code>" to the stamp's data file.</p>
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</blockquote>
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<h4>Initial Stamp Size</h4>
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<blockquote>
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<p>By default, Tux Paint assumes that your stamp is sized
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appropriately for unscaled display on a 608x472 canvas. This is
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the original Tux Paint canvas size, provided by a 640x480 screen.
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Tux Paint will then adjust the stamp according to the current
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canvas size and, if enabled, the user's stamp size controls.</p>
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<p>If your stamp would be too big or too small, you can specify
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a scale factor. If your stamp would be 2.5 times as wide (or tall)
|
|
as it should be, add the option "<code><b>scale 40%</b></code>" or
|
|
"<code><b>scale 5/2</b></code>" or "<code><b>scale 2.5</b></code>"
|
|
or "<code><b>scale 2:5</b></code>" to your image. You may include
|
|
an "<code><b>=</b></code>" if you wish, as in
|
|
"<code><b>scale=40%</b></code>".</p>
|
|
</blockquote>
|
|
|
|
|
|
<h4>Windows Users</h4>
|
|
<blockquote>
|
|
<p>You can use NotePad or WordPad to create these file.
|
|
Be sure to save it as Plain Text, and make sure the filename
|
|
has "<code>.dat</code>" at the end, and not "<code>.txt</code>"...</p>
|
|
</blockquote>
|
|
</blockquote>
|
|
|
|
<h3>Pre-Mirrored Images</h3>
|
|
<blockquote>
|
|
<p>In some cases, you may wish to provide a pre-drawn version of
|
|
a stamp's mirror-image. For example, imagine a picture of a fire
|
|
truck with the words "<i>Fire Department</i>" written across
|
|
the side. You probably do not want that text to appear backwards
|
|
when the image is flipped!</p>
|
|
|
|
<p>To create a mirrored version of a stamp that you want Tux Paint
|
|
to use, rather than mirroring one on its own, simply create a second
|
|
"<code>.png</code>" graphics file with the same name, except with
|
|
the string "<code><b>_mirror</b></code>" before the filename
|
|
extension.</p>
|
|
|
|
<p>For example, for the stamp "<code><b>truck.png</b></code>" you would
|
|
create another file named "<code><b>truck_mirror.png</b></code>", which
|
|
will be used when the stamp is mirrored (rather than using a
|
|
backwards version of '<code>truck.png</code>').</p>
|
|
</blockquote>
|
|
|
|
</blockquote>
|
|
|
|
<hr size=1 noshade>
|
|
|
|
|
|
<h2>Fonts</h2>
|
|
<blockquote>
|
|
<img src="images/fontsizes.png" width=48 height=48 alt="" align=right>
|
|
|
|
<p>The fonts used by Tux Paint are TrueType Fonts (TTF).</p>
|
|
|
|
<p>Simply place them in the "<code><b>fonts</b></code>" directory.
|
|
Tux Paint will load the font and provide four different sizes
|
|
in the 'Letters' selector when using the 'Text' tool.</p>
|
|
|
|
<br clear=all>
|
|
</blockquote>
|
|
|
|
<hr size=1 noshade>
|
|
|
|
|
|
<h2>'Starters'</h2>
|
|
<blockquote>
|
|
<img src="images/open_open.png" width=48 height=48 alt="" align=right>
|
|
|
|
<p>'Starter' images appear in the 'Open' dialog, along with pictures
|
|
you've created. They have a green button background, instead of blue.</p>
|
|
|
|
<p>Unlike your saved pictures, however, when you select and open a
|
|
'starter,' you're actually creating a new drawing. Instead of being
|
|
blank, though, the new drawing contains the contents of the 'starter.'
|
|
Additionally, as you edit your new picture, the contents of the
|
|
original 'starter' affect it.</p>
|
|
|
|
<b>Coloring-Book Style</b>
|
|
|
|
<blockquote>
|
|
<p>The most basic kind of 'starter' is similar to a picture in a coloring
|
|
book. It's an outline of a shape which you can then color in and
|
|
add details to. In Tux Paint, as you draw, type text, or stamp
|
|
stamps, the outline remains 'above' what you draw. You can erase the
|
|
parts of the drawing you made, but you can't erase the outline.</p>
|
|
|
|
<p>To create this kind of 'starter' image, simply draw an outlined
|
|
picture in a paint program, make the rest of the graphic transparent
|
|
(that will come out as white in Tux Paint), and save it as a
|
|
PNG format file.</p>
|
|
</blockquote>
|
|
|
|
<b>Scene-Style</b>
|
|
|
|
<blockquote>
|
|
<p>Along with the 'coloring-book' style overlay, you can also provide
|
|
a separate background image as part of a 'starter' picture. The
|
|
overlay acts the same: it can't be drawn over, erased, or affected by
|
|
'Magic' tools. However, the background can be!</p>
|
|
|
|
<p>When the 'Eraser' tool is used on a picture based on this kind of
|
|
'starter' image, rather than turning the canvas white, it returns that
|
|
part of the canvas to the original background picture.</p>
|
|
|
|
<p>By creating both an overlay and a background, you can create a
|
|
'starter' which simulates depth. Imagine a background that shows
|
|
the ocean, and an overlay that's a picture of a reef. You can then
|
|
draw (or stamp) fish in the picture. They'll appear in the ocean,
|
|
but never 'in front of' the reef.</p>
|
|
|
|
<p>To create this kind of 'starter' picture, simply create an overlay
|
|
(with alpha transparency) as described above, and save it as a PNG.
|
|
Then create another image (without transparency), and save it with
|
|
the same filename, but with "<code>-back</code>" appended to the
|
|
name. (e.g., "<code>reef-back.png</code>" would be the background
|
|
ocean picture that corresponds to the "<code>reef.png</code>"
|
|
overlay, or foreground.)</p>
|
|
</blockquote>
|
|
|
|
<p>The 'starter' images should be the same size as Tux Paint's
|
|
canvas. In the default 640x480 mode, that is 448x376 pixels.
|
|
If you're using 800x600 mode, it should be 608x496. (It should be
|
|
192 pixels less wide, and 104 pixels less tall than the resolution.)</p>
|
|
|
|
<p>Place them in the "<code><b>starters</b></code>" directory.
|
|
When the 'Open' dialog is accessed in Tux Paint, the 'starter'
|
|
images will appear at the beginning of the list with a green background.</p>
|
|
|
|
<p><b>Note:</b> 'Starters' can't be saved over from within Tux Paint,
|
|
since loading a 'starter' is really like creating a new image.
|
|
(Instead of being blank, though there's already something there to work
|
|
with.) The 'Save' command simply creates a new picture, like it would
|
|
if the 'New' command had been used.</p>
|
|
|
|
<p><b>Note:</b> 'Starters' are 'attached' to saved pictures, via a
|
|
small text file that has the same name as the saved file, but with
|
|
"<code>.dat</code>" as the extension. This allows the overlay and
|
|
background, if any, to continue to affect the drawing even after
|
|
Tux Paint has been quit, or another picture loaded or started.
|
|
(In other words, if you base a drawing on a 'starter' image, it will
|
|
always be affected by it.)</p>
|
|
|
|
<br clear=all>
|
|
</blockquote>
|
|
|
|
</body></html>
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