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/*
* html.h
*
* libhtml - HTML->X renderer
* Copyright (c) 1995-1997, John Kilburg <john@cs.unlv.edu>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#ifndef __HTML_H__
#define __HTML_H__ 1
#include <X11/Intrinsic.h>
#include <X11/StringDefs.h>
#include "common.h"
#include "Chimera.h"
#include "ChimeraRender.h"
#include "ChimeraGUI.h"
#include "ml.h"
#include "css.h"
/* proposed HTML3.2 tags and some internal tags */
typedef enum
{
/* internal tags */
TAG_DOCUMENT,
/* implemented? */
TAG_BR,
TAG_ADDRESS,
TAG_DIV,
TAG_CENTER,
TAG_A,
TAG_MAP,
TAG_AREA,
TAG_IMG,
TAG_HR,
TAG_P,
TAG_PRE,
TAG_XMP,
TAG_LISTING,
TAG_PLAINTEXT,
TAG_BLOCKQUOTE,
TAG_DL,
TAG_DD,
TAG_DT,
TAG_OL,
TAG_UL,
TAG_DIR,
TAG_MENU,
TAG_LI,
TAG_FORM,
TAG_INPUT,
TAG_SELECT,
TAG_OPTION,
TAG_TEXTAREA,
TAG_TABLE,
TAG_TR,
TAG_TH,
TAG_TD,
TAG_TITLE,
TAG_BASE,
TAG_SCRIPT,
TAG_H1,
TAG_H2,
TAG_H3,
TAG_H4,
TAG_H5,
TAG_H6,
TAG_TT,
TAG_I,
TAG_B,
TAG_STRIKE,
TAG_BIG,
TAG_SMALL,
TAG_SUB,
TAG_SUP,
TAG_EM,
TAG_STRING,
TAG_DFN,
TAG_CODE,
TAG_SAMP,
TAG_KBD,
TAG_VAR,
TAG_CITE,
TAG_STRONG,
/* do not implement */
TAG_HTML,
TAG_BODY,
TAG_HEAD,
/* weird stuff? */
TAG_IFRAME,
TAG_FRAME,
TAG_FRAMESET,
TAG_NOFRAMES,
/* unimplemented */
TAG_LINK,
TAG_APPLET,
TAG_META,
TAG_STYLE,
TAG_CAPTION,
TAG_FONT,
TAG_PARAM,
TAG_ISINDEX
} HTMLTagID;
typedef struct HTMLBoxP *HTMLBox;
typedef struct HTMLInfoP *HTMLInfo;
typedef struct HTMLClassP *HTMLClass;
typedef struct HTMLObjectP *HTMLObject;
typedef struct HTMLEnvP *HTMLEnv;
typedef struct HTMLFontP *HTMLFont;
typedef struct HTMLFontListP *HTMLFontList;
typedef struct HTMLAnchorP *HTMLAnchor;
typedef struct HTMLTagP *HTMLTag;
typedef struct HTMLMapP *HTMLMap;
typedef struct HTMLAreaP *HTMLArea;
typedef struct HTMLStateP *HTMLState;
/*
* Box callbacks
*/
typedef void (*HTMLSetupProc) _ArgProto((HTMLInfo, HTMLBox));
typedef void (*HTMLDestroyProc) _ArgProto((HTMLInfo, HTMLBox));
typedef void (*HTMLRenderProc) _ArgProto((HTMLInfo, HTMLBox, Region));
typedef void (*HTMLLayoutProc) _ArgProto((HTMLInfo, HTMLBox, HTMLBox));
typedef unsigned int (*HTMLWidthProc) _ArgProto((HTMLInfo, HTMLBox));
/*
* Tag callbacks
*/
typedef bool (*HTMLTagClampProc) _ArgProto((HTMLInfo, HTMLEnv));
typedef void (*HTMLTagRenderProc) _ArgProto((HTMLInfo, HTMLEnv, MLElement));
typedef bool (*HTMLTagAcceptProc) _ArgProto((HTMLInfo, HTMLObject));
typedef enum
{
HTMLInsertEmpty,
HTMLInsertReject,
HTMLInsertOK
} HTMLInsertStatus;
typedef HTMLInsertStatus (*HTMLTagInsertProc) _ArgProto((HTMLInfo,
HTMLEnv, MLElement));
typedef void (*HTMLTagDataProc) _ArgProto((HTMLInfo, HTMLEnv, MLElement));
typedef void (*HTMLTagAddBoxProc) _ArgProto((HTMLInfo, HTMLEnv, HTMLBox));
typedef unsigned int (*HTMLTagWidthProc) _ArgProto((HTMLInfo, HTMLEnv));
typedef enum
{
FLOW_LEFT_JUSTIFY,
FLOW_CENTER_JUSTIFY,
FLOW_RIGHT_JUSTIFY
} HTMLFlowAlign;
/*
* Environment
*/
typedef enum
{
HTML_ENV,
HTML_ELEMENT,
HTML_TAG,
HTML_BEGINTAG,
HTML_ENDTAG
} HTMLObjectType;
struct HTMLObjectP
{
HTMLObjectType type;
union
{
MLElement p;
HTMLEnv env;
} o;
};
struct HTMLEnvP
{
/* Keep track of html structure */
HTMLEnv penv; /* parent environment */
HTMLTag tag; /* tag that defines environment */
GList olist; /* object list */
GList blist; /* boxed object list */
GList slist; /* static object list */
int pass;
/* Keep track of HTML rendering */
bool visited; /* used by boxify functions */
MLElement anchor; /* anchor to use in environment */
HTMLFont fi; /* font to use in environment */
HTMLFlowAlign ff; /* alignment in flow box */
void *closure; /* environment specific data */
};
typedef enum
{
BOX_NONE = 0x00000000, /* no flags set */
BOX_SPACE = 0x00000001, /* horizontal space */
BOX_LINEBREAK = 0x00000002, /* line break, duh. */
BOX_FLOAT_LEFT = 0x00000008, /* float to the left edge */
BOX_FLOAT_RIGHT = 0x00000010, /* float to the right edge */
BOX_VCENTER = 0x00000020, /* vertically center in parent */
BOX_PUSHED_LEFT = 0x00000040, /* box pushed left by floater */
BOX_PUSHED_RIGHT = 0x00000080, /* box pushed right by floater */
BOX_SELECT = 0x00000100, /* anchor box selected */
BOX_TOPLEVEL = 0x00000200, /* toplevel box ? */
BOX_CLEAR_LEFT = 0x00000400, /* clear past left aligned */
BOX_CLEAR_RIGHT = 0x00000800 /* clear past right aligned */
} HTMLBoxFlags;
#define HTMLTestB(a, b) (((a)->bflags & (b)) != 0)
#define HTMLClearB(a, b) ((a)->bflags &= ~(b))
#define HTMLSetB(a, b) ((a)->bflags |= (b))
/* This is still too big */
struct HTMLBoxP
{
HTMLEnv env; /* */
int baseline; /* level of alignment */
int x, y; /* upper-left coordinates */
unsigned int width, height; /* external dimensions */
HTMLBoxFlags bflags; /* misc. worthless flags */
/* rendering functions */
HTMLRenderProc render; /* called when output needed */
HTMLDestroyProc destroy; /* called when destroyed */
HTMLSetupProc setup; /* called by parent box */
HTMLLayoutProc layout; /* child box layout */
HTMLWidthProc maxwidth; /* called to return maximum width */
void *closure; /* state for functions */
};
struct HTMLAnchorP
{
HTMLBox box;
char *name;
MLElement p;
};
struct HTMLStateP
{
int x, y;
};
struct HTMLClassP
{
MemPool mp;
bool font_setup_done;
Display *dpy;
XFontStruct *defaultFont;
HTMLFontList prop;
HTMLFontList fixed;
GList oldstates;
GList fonts;
GList contexts;
CSSContext css;
};
struct HTMLInfoP
{
/* X */
Widget widget;
Display *dpy;
Window win;
GC gc;
Pixel anchor_color;
Pixel anchor_select_color;
Pixel fg, bg;
/* www lib */
ChimeraContext wc;
ChimeraResources cres;
ChimeraGUI wd;
ChimeraSink wp;
ChimeraTask wt;
ChimeraRender wn;
GList sinks;
GList loads;
/* HTML */
CSSContext css;
bool reload;
unsigned int maxwidth, maxheight;
MemPool mp;
MLState hs;
HTMLClass lc;
HTMLFont cfi;
HTMLBox firstbox;
HTMLState ps;
HTMLEnv searchenv;
HTMLObject searchobj;
HTMLEnv topenv; /* document environment */
GList envstack; /* tag hierarchy */
GList selectors; /* CSS selector list */
GList oldselectors; /* old CSS selector list */
GList endstack; /* pending end tags */
GList alist; /* anchor box list */
ChimeraTimeOut sto; /* select timeout */
HTMLAnchor sa; /* selected anchor */
int delayed;
char *url; /* original URL */
char *burl; /* base URL */
char *title; /* title text */
HTMLAnchor over;
GList maps;
bool cancel;
bool formatted; /* inside PRE tags - djhjr */
bool noframeset;
bool framesonly;
GList framesets; /* list of frames */
/* configurable goodies */
int textLineSpace;
bool printHTMLErrors;
int tmargin, bmargin; /* top, bottom margins */
int rmargin, lmargin; /* right, left margins */
unsigned int inlineTimeOut;
unsigned int selectTimeOut; /* select timeout time */
unsigned int tableCellInfinity; /* infinite width for table cell */
bool flowDebug;
bool constraintDebug;
bool printTags; /* print tag and data hierarchy */
};
typedef enum
{
ATTRIB_UNKNOWN,
ATTRIB_LEFT,
ATTRIB_RIGHT,
ATTRIB_TOP,
ATTRIB_BOTTOM,
ATTRIB_CENTER,
ATTRIB_MIDDLE,
ATTRIB_ALL
} HTMLAttribID;
/*
* inline.c
*/
typedef struct
{
MLElement p;
void *closure;
} HTMLInlineInfo;
typedef struct HTMLInlineP *HTMLInline;
HTMLInline HTMLCreateInline _ArgProto((HTMLInfo, HTMLEnv, char *,
HTMLInlineInfo *,
ChimeraRenderHooks *, void *));
HTMLBox HTMLInlineToBox _ArgProto((HTMLInline));
void HTMLInlineDestroy _ArgProto((HTMLInline));
/*
* text.c
*/
HTMLBox HTMLCreateTextBox _ArgProto((HTMLInfo, HTMLEnv, char *, size_t));
char *HTMLGetEnvText _ArgProto((MemPool, HTMLEnv));
void HTMLStringSpacify _ArgProto((char *, size_t));
void HTMLAddLineBreak _ArgProto((HTMLInfo, HTMLEnv));
void HTMLAddBlankLine _ArgProto((HTMLInfo, HTMLEnv));
/*
* layout.c
*/
HTMLBox HTMLCreateBox _ArgProto((HTMLInfo, HTMLEnv));
void HTMLLayoutBox _ArgProto((HTMLInfo, HTMLBox, HTMLBox));
void HTMLSetupBox _ArgProto((HTMLInfo, HTMLBox));
void HTMLRenderBox _ArgProto((HTMLInfo, Region, HTMLBox));
void HTMLDestroyBox _ArgProto((HTMLInfo, HTMLBox));
unsigned HTMLGetBoxWidth _ArgProto((HTMLInfo, HTMLBox));
/*
* html.c
*/
HTMLAttribID HTMLAttributeToID _ArgProto((MLElement, char *));
HTMLTag HTMLGetTag _ArgProto((MLElement));
HTMLTag HTMLTagIDToTag _ArgProto((HTMLTagID));
bool HTMLHandleTag _ArgProto((HTMLInfo, HTMLTag, MLElement));
HTMLEnv HTMLFindEnv _ArgProto((HTMLInfo, HTMLTagID));
void HTMLDelayLayout _ArgProto((HTMLInfo));
void HTMLContinueLayout _ArgProto((HTMLInfo));
HTMLTagID HTMLTagToID _ArgProto((HTMLTag));
void HTMLHandler _ArgProto((void *, MLElement));
HTMLEnv HTMLPopEnv _ArgProto((HTMLInfo, HTMLTagID));
void HTMLStartEnv _ArgProto((HTMLInfo, HTMLTagID, MLElement));
void HTMLEndEnv _ArgProto((HTMLInfo, HTMLTagID));
unsigned int HTMLGetMaxWidth _ArgProto((HTMLInfo, HTMLEnv));
void HTMLEnvAddBox _ArgProto((HTMLInfo, HTMLEnv, HTMLBox));
void HTMLStart _ArgProto((HTMLInfo));
void HTMLFinish _ArgProto((HTMLInfo));
HTMLEnv HTMLGetIDEnv _ArgProto((HTMLEnv, HTMLTagID));
/*
* font.c
*/
XFontStruct *HTMLGetFont _ArgProto((HTMLInfo, HTMLEnv));
void HTMLSetupFonts _ArgProto((HTMLInfo));
void HTMLFreeFonts _ArgProto((HTMLClass));
void HTMLAddFontSlant _ArgProto((HTMLFont));
void HTMLAddFontWeight _ArgProto((HTMLFont));
void HTMLAddFontScale _ArgProto((HTMLFont));
void HTMLSetFontScale _ArgProto((HTMLFont, int));
HTMLFont HTMLDupFont _ArgProto((HTMLInfo, HTMLFont));
void HTMLSetFontFixed _ArgProto((HTMLFont));
void HTMLSetFontProp _ArgProto((HTMLFont));
/*
* load.c
*/
int HTMLLoadAnchor _ArgProto((HTMLInfo, HTMLAnchor, int, int, char *, bool));
void HTMLPrintAnchor _ArgProto((HTMLInfo, HTMLAnchor, int, int, bool));
char *HTMLMakeURL _ArgProto((HTMLInfo, MemPool, char *));
int HTMLLoadURL _ArgProto((HTMLInfo, char *, char *, char *));
void HTMLPrintURL _ArgProto((HTMLInfo, char *));
void HTMLFindName _ArgProto((HTMLInfo, char *));
void HTMLAddAnchor _ArgProto((HTMLInfo, HTMLBox, char *, MLElement));
/*
* module.c
*/
void HTMLSetFinalPosition _ArgProto((HTMLInfo));
/*
* flow.c
*/
HTMLBox HTMLCreateFlowBox _ArgProto((HTMLInfo, HTMLEnv, unsigned int));
void HTMLFinishFlowBox _ArgProto((HTMLInfo, HTMLBox));
/*
* map.c
*/
char *HTMLFindMapURL _ArgProto((HTMLInfo, char *, int, int));
/*
*
* Tag/Env handlers
*
*/
/*
* form.c
*/
void HTMLFormBegin _ArgProto((HTMLInfo, HTMLEnv, MLElement));
void HTMLFormEnd _ArgProto((HTMLInfo, HTMLEnv, MLElement));
void HTMLInput _ArgProto((HTMLInfo, HTMLEnv, MLElement));
void HTMLOptionEnd _ArgProto((HTMLInfo, HTMLEnv, MLElement));
void HTMLSelectBegin _ArgProto((HTMLInfo, HTMLEnv, MLElement));
void HTMLSelectEnd _ArgProto((HTMLInfo, HTMLEnv, MLElement));
void HTMLTextareaEnd _ArgProto((HTMLInfo, HTMLEnv, MLElement));
/*
* inline.c
*/
void HTMLImg _ArgProto((HTMLInfo, HTMLEnv, MLElement));
HTMLInsertStatus HTMLImgInsert _ArgProto((HTMLInfo, HTMLEnv, MLElement));
/*
* hr.c
*/
void HTMLHorizontalRule _ArgProto((HTMLInfo, HTMLEnv, MLElement));
/*
* list.c
*/
HTMLInsertStatus HTMLLIInsert _ArgProto((HTMLInfo, HTMLEnv, MLElement));
void HTMLLIBegin _ArgProto((HTMLInfo, HTMLEnv, MLElement));
HTMLInsertStatus HTMLDTInsert _ArgProto((HTMLInfo, HTMLEnv, MLElement));
void HTMLDTBegin _ArgProto((HTMLInfo, HTMLEnv, MLElement));
HTMLInsertStatus HTMLDDInsert _ArgProto((HTMLInfo, HTMLEnv, MLElement));
void HTMLDDBegin _ArgProto((HTMLInfo, HTMLEnv, MLElement));
bool HTMLListAccept _ArgProto((HTMLInfo, HTMLObject));
bool HTMLDLAccept _ArgProto((HTMLInfo, HTMLObject));
void HTMLULBegin _ArgProto((HTMLInfo, HTMLEnv, MLElement));
void HTMLListEnd _ArgProto((HTMLInfo, HTMLEnv, MLElement));
void HTMLOLBegin _ArgProto((HTMLInfo, HTMLEnv, MLElement));
void HTMLDLBegin _ArgProto((HTMLInfo, HTMLEnv, MLElement));
void HTMLListAddBox _ArgProto((HTMLInfo, HTMLEnv, HTMLBox));
void HTMLItemAddBox _ArgProto((HTMLInfo, HTMLEnv, HTMLBox));
unsigned int HTMLItemWidth _ArgProto((HTMLInfo, HTMLEnv));
void HTMLItemEnd _ArgProto((HTMLInfo, HTMLEnv, MLElement));
/*
* text.c
*/
void HTMLPreBegin _ArgProto((HTMLInfo, HTMLEnv, MLElement));
void HTMLPreEnd _ArgProto((HTMLInfo, HTMLEnv, MLElement));
void HTMLPlainBegin _ArgProto((HTMLInfo, HTMLEnv, MLElement));
void HTMLPlainEnd _ArgProto((HTMLInfo, HTMLEnv, MLElement));
void HTMLFillData _ArgProto((HTMLInfo, HTMLEnv, MLElement));
void HTMLPreData _ArgProto((HTMLInfo, HTMLEnv, MLElement));
void HTMLPlainData _ArgProto((HTMLInfo, HTMLEnv, MLElement));
/*
* misc.c
*/
void HTMLHxBegin _ArgProto((HTMLInfo, HTMLEnv, MLElement));
void HTMLHxEnd _ArgProto((HTMLInfo, HTMLEnv, MLElement));
void HTMLParaBegin _ArgProto((HTMLInfo, HTMLEnv, MLElement));
void HTMLParaEnd _ArgProto((HTMLInfo, HTMLEnv, MLElement));
HTMLInsertStatus HTMLParaInsert _ArgProto((HTMLInfo, HTMLEnv, MLElement));
void HTMLBreak _ArgProto((HTMLInfo, HTMLEnv, MLElement));
void HTMLAddressBegin _ArgProto((HTMLInfo, HTMLEnv, MLElement));
void HTMLAddressEnd _ArgProto((HTMLInfo, HTMLEnv, MLElement));
void HTMLAnchorBegin _ArgProto((HTMLInfo, HTMLEnv, MLElement));
HTMLInsertStatus HTMLAnchorInsert _ArgProto((HTMLInfo, HTMLEnv, MLElement));
void HTMLBQBegin _ArgProto((HTMLInfo, HTMLEnv, MLElement));
void HTMLBQEnd _ArgProto((HTMLInfo, HTMLEnv, MLElement));
void HTMLFontBegin _ArgProto((HTMLInfo, HTMLEnv, MLElement));
void HTMLDivBegin _ArgProto((HTMLInfo, HTMLEnv, MLElement));
void HTMLDivEnd _ArgProto((HTMLInfo, HTMLEnv, MLElement));
void HTMLCenterBegin _ArgProto((HTMLInfo, HTMLEnv, MLElement));
void HTMLCenterEnd _ArgProto((HTMLInfo, HTMLEnv, MLElement));
/*
* table.c
*/
bool HTMLTableAccept _ArgProto((HTMLInfo, HTMLObject));
void HTMLTableBegin _ArgProto((HTMLInfo, HTMLEnv, MLElement));
void HTMLTableEnd _ArgProto((HTMLInfo, HTMLEnv, MLElement));
bool HTMLTRAccept _ArgProto((HTMLInfo, HTMLObject));
HTMLInsertStatus HTMLTRInsert _ArgProto((HTMLInfo, HTMLEnv, MLElement));
bool HTMLTRClamp _ArgProto((HTMLInfo, HTMLEnv));
void HTMLTRBegin _ArgProto((HTMLInfo, HTMLEnv, MLElement));
void HTMLTREnd _ArgProto((HTMLInfo, HTMLEnv, MLElement));
HTMLInsertStatus HTMLTDInsert _ArgProto((HTMLInfo, HTMLEnv, MLElement));
bool HTMLTDClamp _ArgProto((HTMLInfo, HTMLEnv));
void HTMLTDBegin _ArgProto((HTMLInfo, HTMLEnv, MLElement));
void HTMLTDEnd _ArgProto((HTMLInfo, HTMLEnv, MLElement));
unsigned int HTMLTDWidth _ArgProto((HTMLInfo, HTMLEnv));
void HTMLTableAddBox _ArgProto((HTMLInfo, HTMLEnv, HTMLBox));
void HTMLTDAddBox _ArgProto((HTMLInfo, HTMLEnv, HTMLBox));
/*
* head.c
*/
void HTMLBase _ArgProto((HTMLInfo, HTMLEnv, MLElement));
void HTMLTitleEnd _ArgProto((HTMLInfo, HTMLEnv, MLElement));
void HTMLMeta _ArgProto((HTMLInfo, HTMLEnv, MLElement));
/*
* map.c
*/
bool HTMLMapAccept _ArgProto((HTMLInfo, HTMLObject));
HTMLInsertStatus HTMLAreaInsert _ArgProto((HTMLInfo, HTMLEnv, MLElement));
void HTMLAreaBegin _ArgProto((HTMLInfo, HTMLEnv, MLElement));
void HTMLMapBegin _ArgProto((HTMLInfo, HTMLEnv, MLElement));
void HTMLMapEnd _ArgProto((HTMLInfo, HTMLEnv, MLElement));
/*
* frame.c
*/
void HTMLIFrame _ArgProto((HTMLInfo, HTMLEnv, MLElement));
void HTMLFrame _ArgProto((HTMLInfo, HTMLEnv, MLElement));
HTMLInsertStatus HTMLFrameInsert _ArgProto((HTMLInfo, HTMLEnv, MLElement));
void HTMLFrameSetBegin _ArgProto((HTMLInfo, HTMLEnv, MLElement));
void HTMLFrameSetEnd _ArgProto((HTMLInfo, HTMLEnv, MLElement));
bool HTMLFrameSetAccept _ArgProto((HTMLInfo, HTMLObject));
HTMLInsertStatus HTMLFrameSetInsert _ArgProto((HTMLInfo, HTMLEnv, MLElement));
void HTMLNoFramesBegin _ArgProto((HTMLInfo, HTMLEnv, MLElement));
void HTMLNoFramesEnd _ArgProto((HTMLInfo, HTMLEnv, MLElement));
void HTMLDestroyFrameSets _ArgProto((HTMLInfo));
void HTMLFrameLoad _ArgProto((HTMLInfo, ChimeraRequest *, char*));
#endif
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