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| -rw-r--r-- | WWW/Library/Implementation/HText.h | 219 |
1 files changed, 219 insertions, 0 deletions
diff --git a/WWW/Library/Implementation/HText.h b/WWW/Library/Implementation/HText.h new file mode 100644 index 0000000..93ff4a6 --- /dev/null +++ b/WWW/Library/Implementation/HText.h @@ -0,0 +1,219 @@ +/* + * $LynxId: HText.h,v 1.17 2020/01/21 22:08:07 tom Exp $ + * Rich Hypertext object for libWWW + * RICH HYPERTEXT OBJECT + * + * This is the C interface to the Objective-C (or whatever) Style-oriented + * HyperText class. It is used when a style-oriented text object is available + * or craeted in order to display hypertext. + */ +#ifndef HTEXT_H +#define HTEXT_H + +#include <HTAnchor.h> +#include <HTStyle.h> +#include <HTStream.h> +#include <SGML.h> + +#ifdef __cplusplus +extern "C" { +#endif +#ifndef THINK_C +#ifndef HyperText /* Objective C version defined HyperText */ + typedef struct _HText HText; /* Normal Library */ +#endif +#else + class CHyperText; /* Mac Think-C browser hook */ + typedef CHyperText HText; +#endif + + extern HText *HTMainText; /* Pointer to current main text */ + extern HTParentAnchor *HTMainAnchor; /* Pointer to current text's anchor */ + + extern const char *HTAppName; /* Application name */ + extern const char *HTAppVersion; /* Application version */ + +/* + +Creation and deletion + + HTEXT_NEW: CREATE HYPERTEXT OBJECT + + There are several methods depending on how much you want to specify. The + output stream is used with objects which need to output the hypertext to a + stream. The structure is for objects which need to refer to the structure + which is kep by the creating stream. + + */ + extern HText *HText_new(HTParentAnchor *anchor); + + extern HText *HText_new2(HTParentAnchor *anchor, + HTStream *output_stream); + + extern HText *HText_new3(HTParentAnchor *anchor, + HTStream *output_stream, + HTStructured * structure); + +/* + + FREE HYPERTEXT OBJECT + + */ + extern void HText_free(HText *me); + +/* + +Object Building methods + + These are used by a parser to build the text in an object HText_beginAppend + must be called, then any combination of other append calls, then + HText_endAppend. This allows optimised handling using buffers and caches + which are flushed at the end. + + */ + extern void HText_beginAppend(HText *text); + + extern void HText_endAppend(HText *text); + +/* + + SET THE STYLE FOR FUTURE TEXT + + */ + + extern void HText_setStyle(HText *text, HTStyle *style); + +/* + + ADD ONE CHARACTER + + */ + extern void HText_appendCharacter(HText *text, int ch); + +/* + + ADD A ZERO-TERMINATED STRING + + */ + + extern void HText_appendText(HText *text, const char *str); + +/* + + NEW PARAGRAPH + + and similar things + + */ + extern void HText_appendParagraph(HText *text); + + extern void HText_appendLineBreak(HText *text); + + extern void HText_appendHorizontalRule(HText *text); + +/* + + START/END SENSITIVE TEXT + + */ + +/* + + The anchor object is created and passed to HText_beginAnchor. The sensitive + text is added to the text object, and then HText_endAnchor is called. + Anchors may not be nested. + + */ + extern int HText_beginAnchor(HText *text, int underline, + HTChildAnchor *anc); + extern void HText_endAnchor(HText *text, int number); + extern BOOL HText_isAnchorBlank(HText *text, int number); + +/* + + APPEND AN INLINE IMAGE + + The image is handled by the creation of an anchor whose destination is the + image document to be included. The semantics is the intended inline display + of the image. + + An alternative implementation could be, for example, to begin an anchor, + append the alternative text or "IMAGE", then end the anchor. This would + simply generate some text linked to the image itself as a separate document. + + */ + extern void HText_appendImage(HText *text, HTChildAnchor *anc, + const char *alternative_text, + int alignment, + int isMap); + +/* + + RETURN THE ANCHOR ASSOCIATED WITH THIS NODE + + */ + extern HTParentAnchor *HText_nodeAnchor(HText *me); + +/* + +Browsing functions + + */ + +/* + + BRING TO FRONT AND HIGHLIGHT IT + + */ + + extern BOOL HText_select(HText *text); + extern BOOL HText_selectAnchor(HText *text, HTChildAnchor *anchor); + +/* + +Editing functions + + These are called from the application. There are many more functions not + included here from the original text object. These functions NEED NOT BE + IMPLEMENTED in a browser which cannot edit. + + */ +/* Style handling: +*/ +/* Apply this style to the selection +*/ + extern void HText_applyStyle(HText *me, HTStyle *style); + +/* Update all text with changed style. +*/ + extern void HText_updateStyle(HText *me, HTStyle *style); + +/* Return style of selection +*/ + extern HTStyle *HText_selectionStyle(HText *me, HTStyleSheet *sheet); + +/* Paste in styled text +*/ + extern void HText_replaceSel(HText *me, const char *aString, + HTStyle *aStyle); + +/* Apply this style to the selection and all similarly formatted text + * (style recovery only) + */ + extern void HTextApplyToSimilar(HText *me, HTStyle *style); + +/* Select the first unstyled run. + * (style recovery only) + */ + extern void HTextSelectUnstyled(HText *me, HTStyleSheet *sheet); + +/* Anchor handling: +*/ + extern void HText_unlinkSelection(HText *me); + extern HTAnchor *HText_referenceSelected(HText *me); + extern HTAnchor *HText_linkSelTo(HText *me, HTAnchor * anchor); + +#ifdef __cplusplus +} +#endif +#endif /* HTEXT_H */ |