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Xfontcache

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Xfontcache

NAME
SYNOPSIS
DESCRIPTION
ERRORS
SEE ALSO
AUTHOR
STABILITY

NAME

Xfontcache − X-TrueType font cache extension client library

SYNOPSIS

#include <X11/extensions/FontCache.h>

typedef struct {


	long	himark;

	long	lowmark;

	long	balance;

} FontCacheSettings, *FontCacheSettingsPtr;

struct cacheinfo {


	long	hits;

	long	misshits;

	long	purged;

	long	usage;

};

typedef struct {


	long	purge_runs;

	long	purge_stat;

	long	balance;
	struct cacheinfof;
	struct cacheinfov;

} FontCacheStatistics, *FontCacheStatisticsPtr;

	Bool FontCacheQueryExtension(Display *dpy, int *event_base_return, int *error_base_return);
	Status FontCacheQueryVersion(Display *dpy, int *major_version_return, int *minor_version_return);
	Status FontCacheGetCacheSettings(Display *dpy, FontCacheSettings *cache info);
	Status FontCacheChangeCacheSettings(Display *dpy, FontCacheSettings *cache info);
	Status FontCacheGetCacheStatistics(Display *dpy, FontCacheStatistics *cache statistics info);

DESCRIPTION

FontCache is an extension that is used by X-TrueType to cache informations about fonts.

FontCacheQueryExtension returns True if the FontCache extension is available on the given display. A client must call FontCacheQueryExtension before calling any other Xfontcache function in order to negotiate a compatible protocol version; otherwise the client will get undefined behavior (Xfontcache may or may not work).

FontCacheQueryVersion returns True if the request succeeded; the values of the major and minor protocol versions supported by the server are returned in major_version_return and minor_version_return .

FontCacheGetCacheSettings should be documented here. Returns True on success or False on failure.

FontCacheChangeCacheSettings should be documented here. Returns True on success or False on failure.

FontCacheGetCacheStatistics should be documented here. Returns True on success or False on failure.

ERRORS

FontCacheChangeCacheSettings will return BadValue if passed an illegal parameters for lowmark, himark or balance fields.

AUTHOR

Akio Morita, X-TrueType team, Nozomi Ytow.

STABILITY

This API is considered as experimental. The Xfontcache library major revision may be incremented whenever incompatible changes are done to the API without notice. Use with care.

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	Bool FontCacheQueryExtension(Display *dpy, int *event_base_return, int *error_base_return);
	Status FontCacheQueryVersion(Display *dpy, int *major_version_return, int *minor_version_return);
	Status FontCacheGetCacheSettings(Display *dpy, FontCacheSettings *cache info);
	Status FontCacheChangeCacheSettings(Display *dpy, FontCacheSettings *cache info);
	Status FontCacheGetCacheStatistics(Display *dpy, FontCacheStatistics *cache statistics info);