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More fixes for NxConsole driver

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git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@4543 42af7a65-404d-4744-a932-0658087f49c3
This commit is contained in:
patacongo
2012-03-30 22:49:08 +00:00
parent c60b58a91f
commit defc29ea07
15 changed files with 135 additions and 159 deletions
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include/nuttx/nx/nxconsole.h
+11 -14
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@@ -77,15 +77,16 @@
* NxConsole needs to remember every character written to the console so
* that it can redraw the window. This setting determines the size of some
* internal memory allocations used to hold the character data. Default: 128.
* CONFIG_NXCONSOLE_FONTCACHE
* If this setting is defined, then caching of fonts will be supported by
* NxConsole. Each font must be rendered from the tiny font storage format
* to the full display size and pixel depth. If this setting is defined, then
* the more recently used font glyphs will be retained in a cache of size
* CONFIG_NXCONSOLE_CACHESIZE. Default: No font caching.
* CONFIG_NXCONSOLE_CACHESIZE
* If CONFIG_NXCONSOLE_FONTCACHE, then this setting will control the size
* of the font cache (in number of glyphs). Default: 16.
* NxConsole supports caching of rendered fonts. This font caching is required
* for two reasons: (1) First, it improves text performance, but more
* importantly (2) it preserves the font memory. Since the NX server runs on
* a separate server thread, it requires that the rendered font memory persist
* until the server has a chance to render the font. (NOTE: There is still
* inherently a race condition in this!). Unfortunately, the font cache would
* be quite large if all fonts were saved. The CONFIG_NXCONSOLE_CACHESIZE setting
* will control the size of the font cache (in number of glyphs). Only that
* number of the most recently used glyphs will be retained. Default: 16.
* CONFIG_NXCONSOLE_LINESEPARATION
* This the space (in rows) between each row of test. Default: 0
* CONFIG_NXCONSOLE_NOWRAP
@@ -104,12 +105,8 @@
* remembered.
*/
#ifdef CONFIG_NXCONSOLE_FONTCACHE
# ifndef CONFIG_NXCONSOLE_CACHESIZE
# define CONFIG_NXCONSOLE_CACHESIZE 16
# endif
#else
# undef CONFIG_NXCONSOLE_CACHESIZE
#ifndef CONFIG_NXCONSOLE_CACHESIZE
# define CONFIG_NXCONSOLE_CACHESIZE 16
#endif
/* Pixel depth */