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/* HTStyle: Style management for libwww
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STYLE DEFINITION FOR HYPERTEXT
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Styles allow the translation between a logical property of a piece of text and its
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physical representation.
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A StyleSheet is a collection of styles, defining the translation necessary to represent
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a document. It is a linked list of styles.
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Overriding this module
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Why is the style structure declared in the HTStyle.h module, instead of having the user
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browser define the structure, and the HTStyle routines just use sizeof() for copying?
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It's not obvious whether HTStyle.c should be common code. It's useful to have common
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code for loading style sheets, especially if the movement toward standard style sheets
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If it IS common code, then both the hypertext object and HTStyle.c must know the
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structure of a style, so HTStyle.h is a suitable place to put that. HTStyle.c has to
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be compiled with a knowledge of the
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It we take it out of the library, then of course HTStyle could be declared as an
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undefined structure. The only references to it are in the structure-flattening code
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HTML.c and HTPlain.c, which only use HTStypeNamed().
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You can in any case override this function in your own code, which will prevent the
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HTStyle from being loaded. You will be able to redefine your style structure in this
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case without problems, as no other moule needs to know it.
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typedef long int HTFont; /* Dummy definition instead */
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#ifdef NeXT_suppressed
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#include <appkit/appkit.h>
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typedef NXCoord HTCoord;
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#define HTParagraphStyle NXTextStyle
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#define HTCoord NXCoord
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typedef struct _color {
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typedef int HTCoord; /* changed from float to int - kw */
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typedef struct _HTParagraphStyle {
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HTCoord left_indent; /* @@@@ junk! etc etc*/
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typedef int HTColor; /* Sorry about the US spelling! */
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#define STYLE_NAME_LENGTH 80 /* @@@@@@@@@@@ */
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short kind; /* only NX_LEFTTAB implemented*/
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HTCoord position; /* x coordinate for stop */
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/* The Style Structure
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** -------------------
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typedef struct _HTStyle {
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/* Style management information
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struct _HTStyle *next; /* Link for putting into stylesheet */
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char * name; /* Style name */
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int id; /* equivalent of name, for speed */
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char * SGMLTag; /* Tag name to start */
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/* Character attributes (a la NXRun)
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HTFont font; /* Font id */
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HTCoord fontSize; /* The size of font, not independent */
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HTColor color; /* text gray of current run */
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int superscript; /* superscript (-sub) in points */
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HTAnchor *anchor; /* Anchor id if any, else zero */
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/* Paragraph Attribtes (a la NXTextStyle)
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HTCoord indent1st; /* how far first line in paragraph is
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HTCoord leftIndent; /* how far second line is indented */
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HTCoord rightIndent; /* (Missing from NeXT version */
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short alignment; /* quad justification */
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HTCoord lineHt; /* line height */
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HTCoord descentLine; /* descender bottom from baseline */
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CONST HTTabStop *tabs; /* array of tab stops, 0 terminated */
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BOOL wordWrap; /* Yes means wrap at space not char */
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BOOL freeFormat; /* Yes means \n is just white space */
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HTCoord spaceBefore; /* Omissions from NXTextStyle */
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int paraFlags; /* Paragraph flags, bits as follows: */
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#define PARA_KEEP 1 /* Do not break page within this paragraph */
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#define PARA_WITH_NEXT 2 /* Do not break page after this paragraph */
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#define HT_JUSTIFY 0 /* For alignment */
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#define HT_ALIGN_NONE (-1)
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extern HTStyle * HTStyleNew NOPARAMS;
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extern HTStyle * HTStyleNewNamed PARAMS ((CONST char * name));
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extern HTStyle * HTStyleFree PARAMS((HTStyle * self));
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extern HTStyle * HTStyleRead PARAMS((HTStyle * self, HTStream * stream));
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extern HTStyle * HTStyleWrite PARAMS((HTStyle * self, HTStream * stream));
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typedef struct _HTStyleSheet {
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/* Stylesheet functions:
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extern HTStyleSheet * HTStyleSheetNew NOPARAMS;
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extern HTStyleSheet * HTStyleSheetFree PARAMS((HTStyleSheet * self));
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extern HTStyle * HTStyleNamed PARAMS((HTStyleSheet * self, CONST char * name));
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extern HTStyle * HTStyleForParagraph PARAMS((HTStyleSheet * self,
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HTParagraphStyle * paraStyle));
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extern HTStyle * HTStyleMatching PARAMS((HTStyleSheet *self, HTStyle * style));
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/* extern HTStyle * HTStyleForRun PARAMS((HTStyleSheet *self, NXRun * run)); */
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extern HTStyleSheet * HTStyleSheetAddStyle PARAMS((HTStyleSheet * self,
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extern HTStyleSheet * HTStyleSheetRemoveStyle PARAMS((HTStyleSheet * self,
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extern HTStyleSheet * HTStyleSheetRead PARAMS((HTStyleSheet * self,
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extern HTStyleSheet * HTStyleSheetWrite PARAMS((HTStyleSheet * self,
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#define CLEAR_POINTER ((void *)-1) /* Pointer value means "clear me" */
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extern HTStyleSheet * DefaultStyle PARAMS((HTStyle*** result_array));
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/* enum, use this instead of HTStyle name comparisons */
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#endif /* HTStyle_H */
added
removed
WWW/Library/Implementation/HTStyle.h
