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62 lines
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HTML
62 lines
3 KiB
HTML
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<title>Printing in TTY with KMS - Ponysay</title>
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<!--
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This manual is for ponysay
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(version 2.9),
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Copyright (C) 2012 Mattias Andrée
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Permission is granted to copy, distribute and/or modify this
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document under the terms of the GNU Free Documentation License,
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Version 1.3 or any later version published by the Free Software
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<a name="Printing-in-TTY-with-KMS"></a>
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<p>
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Next: <a rel="next" accesskey="n" href="Truncation.html#Truncation">Truncation</a>,
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Previous: <a rel="previous" accesskey="p" href="Balloon-style-files.html#Balloon-style-files">Balloon style files</a>,
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Up: <a rel="up" accesskey="u" href="Inner-workings.html#Inner-workings">Inner workings</a>
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</div>
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<h3 class="section">10.4 Printing in TTY with KMS</h3>
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<p><a name="index-tty-387"></a><a name="index-linux-vt-388"></a><a name="index-clearing-tty-389"></a><a name="index-kms-390"></a><a name="index-kernel-mode-setting-391"></a>
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Since Linux VT (TTY) does not have capabilities for returning the position of the
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cursor, the screen must always be cleared before printing the ponies to make sure
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the pony's colours is not lost, i.e. reduced to mare 16 colours, during print. The
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colours are reduced if the pony's position on the screen is changed. This is only
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relevant with KMS support. The clear the screen we print “<code>\e[H\e[2J</code>”
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(<code>\e</code> is ESC) in at beginning. “<code>\e[H</code>” places the cursor at the
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beginning of the screen, and “<code>\e[2J</code>” clears everything on the screen after,
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and including at, the cursor. If we would use “<code>\ec</code>” (that is a reset),
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we would also turn off num. lock and caps. lock.
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</body></html>
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