Annotation of libwww/Library/src/HTIcons.html, revision 2.1

2.1     ! frystyk     1: <HTML>
        !             2: <HEAD>
        !             3: <TITLE>Icon Management</TITLE>
        !             4: </HEAD>
        !             5: <BODY>
        !             6: <H1>Icon Management</H1>
        !             7: <PRE>
        !             8: #ifndef HTICONS_H
        !             9: #define HTICONS_H
        !            10: </PRE>
        !            11: 
        !            12: <H2>Icons</H2>
        !            13: 
        !            14: Icons are bound to MIME content-types and encoding.  These functions
        !            15: bind icon URLs to given content-type or encoding templates.  Templates
        !            16: containing a slash are taken to be content-type templates, other are
        !            17: encoding templates. <P>
        !            18:  
        !            19: <H2>Controlling globals</H2>
        !            20: 
        !            21: <H3>Show brackets around alternative text</H3>
        !            22: By default alternative text is bracketed by square brackets (the
        !            23: <CODE>ALT</CODE> tag to <CODE>IMG</CODE> element).  Setting the global
        !            24: <CODE>HTDirShowBrackets</CODE> to false will turn this feature off.
        !            25: 
        !            26: <PRE>
        !            27: typedef struct _HTIconNode {
        !            28:     char *     icon_url;
        !            29:     char *     icon_alt;
        !            30:     char *     type_templ;
        !            31: } HTIconNode;
        !            32: </PRE>
        !            33: 
        !            34: <PRE>
        !            35: extern BOOL HTDirShowBrackets;
        !            36: extern HTIconNode * icon_unknown;              /* Unknown file type */
        !            37: extern HTIconNode * icon_blank;                        /* Blank icon in heading */
        !            38: extern HTIconNode * icon_parent;               /* Parent directory icon */
        !            39: extern HTIconNode * icon_dir;                   /* Directory icon */
        !            40: </PRE>
        !            41: 
        !            42: <H2>Public functions</H2>
        !            43: 
        !            44: All of these functions take an absolute URL and alternate text to use. <P>
        !            45: 
        !            46: <PRE>
        !            47: /* Generates the alt-tag */
        !            48: PUBLIC char * HTIcon_alt_string PARAMS((char * alt,
        !            49:                                        BOOL   brackets));
        !            50: 
        !            51: /*
        !            52:  * General icon binding.  Use this icon if content-type or encoding
        !            53:  * matches template.
        !            54:  */
        !            55: PUBLIC void HTAddIcon PARAMS((char *   url,
        !            56:                              char *    alt,
        !            57:                              char *    type_templ));
        !            58: 
        !            59: /*
        !            60:  * Icon for which no other icon can be used.
        !            61:  */
        !            62: PUBLIC void HTAddUnknownIcon PARAMS((char * url,
        !            63:                                     char * alt));
        !            64: 
        !            65: /*
        !            66:  * Invisible icon for the listing header field to make it aligned
        !            67:  * with the rest of the listing (this doesn't have to be blank).
        !            68:  */
        !            69: PUBLIC void HTAddBlankIcon PARAMS((char * url,
        !            70:                                   char * alt));
        !            71: 
        !            72: /*
        !            73:  * Icon to use for parent directory.
        !            74:  */
        !            75: PUBLIC void HTAddParentIcon PARAMS((char * url,
        !            76:                                    char * alt));
        !            77: 
        !            78: /*
        !            79:  * Icon to use for a directory.
        !            80:  */
        !            81: PUBLIC void HTAddDirIcon PARAMS((char * url,
        !            82:                                 char * alt));
        !            83: 
        !            84: /*                                                              HTGetIcon()
        !            85: ** returns the icon corresponding to content_type or content_encoding.
        !            86: */
        !            87: PUBLIC HTIconNode * HTGetIcon PARAMS((mode_t   mode,
        !            88:                                      HTFormat  content_type,
        !            89:                                      HTFormat  content_encoding));
        !            90: 
        !            91: </PRE>
        !            92: 
        !            93: 
        !            94: <H4>A Predifined Set of Icons</H4>
        !            95: The function <CODE>HTStdIconInit(url_prefix)</CODE> can be used to
        !            96: initialize a standard icon set:
        !            97: <UL>
        !            98: <LI> <CODE>blank.xbm</CODE> for the blank icon
        !            99: <LI> <CODE>directory.xbm</CODE> for directory icon
        !           100: <LI> <CODE>back.xbm</CODE> for parent directory
        !           101: <LI> <CODE>unknown.xbm</CODE> for unknown icon
        !           102: <LI> <CODE>binary.xbm</CODE> for binary files
        !           103: <LI> <CODE>text.xbm</CODE> for ascii files
        !           104: <LI> <CODE>image.xbm</CODE> for image files
        !           105: <LI> <CODE>movie.xbm</CODE> for video files
        !           106: <LI> <CODE>sound.xbm</CODE> for audio files
        !           107: <LI> <CODE>tar.xbm</CODE> for tar and gtar files
        !           108: <LI> <CODE>compressed.xbm</CODE> for compressed and gzipped files
        !           109: </UL>
        !           110: <PRE>
        !           111: PUBLIC void HTStdIconInit PARAMS((char * url_prefix));
        !           112: </PRE>
        !           113: 
        !           114: <PRE>
        !           115: #endif /* HTICONS */
        !           116: </PRE>
        !           117: end
        !           118: </BODY>
        !           119: </HTML>
        !           120: 

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