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C/C++ Source or Header | 2005-10-20 | 40.7 KB | 1,103 lines

/***** * HTML.h : XmHTML Widget public header file. * Resource defines, enumerations and structures. * * This file Version $Revision: 1.5 $ * * Creation date: Tue Apr 15 23:39:26 GMT+0100 1997 * Last modification: $Date: 1997/12/29 22:16:18 $ * By: $Author: unammx $ * Current State: $State: Exp $ * * Author: newt * * Copyright (C) 1994-1997 by Ripley Software Development * All Rights Reserved * * This file is part of the XmHTML Widget Library * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Library General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library 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 * Library General Public License for more details. * * You should have received a copy of the GNU Library General Public * License along with this library; if not, write to the Free * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. * *****/ /***** * $Source: /cvs/gnome/gnome-libs/gtk-xmhtml/Attic/HTML.h,v $ *****/ /***** * ChangeLog * $Log: HTML.h,v $ * Revision 1.5 1997/12/29 22:16:18 unammx * This version does: * * - Sync with Koen to version Beta 1.1.2c of the XmHTML widget. * Includes various table fixes. * * - Callbacks are now properly checked for the Gtk edition (ie, * signals). * * Revision 1.4 1997/12/26 23:54:37 unammx * More Gtk/XmHTML work: now a number of features can be configured on * the widget, look at the gazillions of options in gtk-xmhtml.h for * more information. This is probably not complete, I have to read * over the XmHTML/Motif docs for figuring which other bits I am missing. * * Known bug: the parser is not fixing documents without <BODY> tags, * so this means that the program is crashing if you pass a document * withou the BODY. I bet this is caused by some mistake of mine in * the handling of the old/new/current widgets as created by Motif. * * Miguel. * * Revision 1.3 1997/12/25 01:34:08 unammx * Good news for the day: * * I have upgraded our XmHTML sources to XmHTML 1.1.1. * * This basically means that we got table support :-) * * Still left to do: * * - Set/Get gtk interface for all of the toys in the widget. * - Frame support is broken, dunno why. * - Form support (ie adding widgets to it) * * Miguel. * * Revision 1.2 1997/12/11 21:20:19 unammx * Step 2: more gtk/xmhtml code, still non-working - mig * * Revision 1.1 1997/11/28 03:38:53 gnomecvs * Work in progress port of XmHTML; No, it does not compile, don't even try -mig * * Revision 1.6 1997/10/23 00:24:27 newt * XmHTML Beta 1.1.0 release * * Revision 1.5 1997/08/31 17:30:39 newt * Removed HT_TEXTFLOW * * Revision 1.4 1997/08/30 00:22:46 newt * Alpha channel resources: XmNalphaChannelProcessing and * XmNimageRGBConversion. Updated comments and reorganized a bunch of things. * * Revision 1.3 1997/08/01 12:52:11 newt * Progressive image loading changes * * Revision 1.2 1997/05/28 01:29:28 newt * XmImage changes: added the XmImageConfig structure and configuration flags. * Added support for the XmNdecodeGIFProc resource. * * Revision 1.1 1997/04/29 14:19:18 newt * Initial Revision * *****/ #ifndef _HTML_h_ #define _HTML_h_ /* include our new resources */ #ifdef WITH_MOTIF # include <XmHTML/HTMLStrings.h> #endif /****************************************************************************** * Enumerations and other constants ******************************************************************************/ /***** * HTML Elements internal id's * This list is alphabetically sorted to speed up the searching process. * DO NOT MODIFY *****/ typedef enum{ HT_DOCTYPE, HT_A, HT_ADDRESS, HT_APPLET, HT_AREA, HT_B, HT_BASE, HT_BASEFONT, HT_BIG, HT_BLOCKQUOTE, HT_BODY, HT_BR, HT_CAPTION, HT_CENTER, HT_CITE, HT_CODE, HT_DD, HT_DFN, HT_DIR, HT_DIV, HT_DL, HT_DT, HT_EM, HT_FONT, HT_FORM, HT_FRAME, HT_FRAMESET, HT_H1, HT_H2, HT_H3, HT_H4, HT_H5, HT_H6, HT_HEAD, HT_HR, HT_HTML, HT_I, HT_IMG, HT_INPUT, HT_ISINDEX, HT_KBD, HT_LI, HT_LINK, HT_MAP, HT_MENU, HT_META, HT_NOFRAMES, HT_OL, HT_OPTION, HT_P, HT_PARAM, HT_PRE, HT_SAMP, HT_SCRIPT, HT_SELECT, HT_SMALL, HT_STRIKE, HT_STRONG, HT_STYLE, HT_SUB, HT_SUP, HT_TAB, HT_TABLE, HT_TD, HT_TEXTAREA, HT_TH, HT_TITLE, HT_TR, HT_TT, HT_U, HT_UL, HT_VAR, HT_ZTEXT }htmlEnum; /***** * Corresponding HTML element name table. Indexing with the above enumeration * will give the corresponding element name. *****/ extern String html_tokens[]; /***** * XmHTML defines the following callback reasons. This might produce strange * results once Motif decides to uses enum values above 16383. * Send us a mail at ripley@xs4all.nl if you get problems that are due to * these enumeration values. *****/ enum{ XmCR_HTML_ANCHORTRACK = 16384, /* XmNanchorTrackCallback */ XmCR_HTML_DOCUMENT, /* XmNdocumentCallback */ XmCR_HTML_FORM, /* XmNformCallback */ XmCR_HTML_FRAME, /* XmNframeCallback */ XmCR_HTML_FRAMECREATE, /* XmNframeCallback */ XmCR_HTML_FRAMEDESTROY, /* XmNframeCallback */ XmCR_HTML_IMAGEMAPACTIVATE, /* XmNimagemapCallback */ XmCR_HTML_IMAGEMAP, /* XmNimagemapCallback */ XmCR_HTML_LINK, /* XmNlinkCallback */ XmCR_HTML_MODIFYING_TEXT_VALUE, /* XmNmodifyVerifyCallback */ XmCR_HTML_MOTIONTRACK, /* XmNmotionTrackCallback */ XmCR_HTML_PARSER, /* XmNparserCallback */ XmCR_HTML_EVENT, /* XmNeventCallback */ XmCR_HTML_EVENTDESTROY /* XmNeventCallback */ }; /***** * XmNeventCallback sub event types *****/ enum{ /* Document/Frame specific events */ XmCR_HTML_LOAD = 0, /* onLoad */ XmCR_HTML_UNLOAD, /* onUnLoad */ /* HTML Form specific events */ XmCR_HTML_SUBMIT, /* onSubmit */ XmCR_HTML_RESET, /* onReset */ XmCR_HTML_FOCUS, /* onFocus */ XmCR_HTML_BLUR, /* onBlur */ XmCR_HTML_SELECT, /* onSelect */ XmCR_HTML_CHANGE, /* onChange */ /* object events */ XmCR_HTML_CLICK, /* onClick */ XmCR_HTML_DOUBLE_CLICK, /* onDblClick */ XmCR_HTML_MOUSEDOWN, /* onMouseDown */ XmCR_HTML_MOUSEUP, /* onMouseUp */ XmCR_HTML_MOUSEOVER, /* onMouseOver */ XmCR_HTML_MOUSEMOVE, /* onMouseMove */ XmCR_HTML_MOUSEOUT, /* onMouseOut */ XmCR_HTML_KEYPRESS, /* onKeyPress */ XmCR_HTML_KEYDOWN, /* onKeyDown */ XmCR_HTML_KEYUP, /* onKeyUp */ XmCR_HTML_USEREVENT /* must always be last */ }; /***** * URL types XmHTML knows of. * The hostnames, files and port numbers are only shown for demonstration * purposes, XmHTML doesn't care whether they are present or not. *****/ typedef enum{ ANCHOR_UNKNOWN = 0, /* unknown href */ ANCHOR_NAMED, /* name="...." */ ANCHOR_JUMP, /* href="#..." */ ANCHOR_FILE_LOCAL, /* href="file.html" * href="file:/file.html" (clearly local) * href="file:///file.html" (NULL host) * href="file://localhost/file.html" (localhost) */ ANCHOR_FILE_REMOTE, /* href="file://foo.bar/file.html" */ ANCHOR_FTP, /* href="ftp://foo.bar/file" */ ANCHOR_HTTP, /* href="http://foo.bar/file.html" */ ANCHOR_SECURE_HTTP, /* href="https://foo.bar/file.html" */ ANCHOR_GOPHER, /* href="gopher://foo.bar:70" */ ANCHOR_WAIS, /* href="wais://foo.bar" */ ANCHOR_NEWS, /* href="news://foo.bar" */ ANCHOR_TELNET, /* href="telnet://foo.bar:23" */ ANCHOR_MAILTO, /* href="mailto:foo@bar" */ ANCHOR_EXEC, /* href="exec:foo_bar" */ ANCHOR_PIPE, /* href="pipe:foo_bar" */ ANCHOR_ABOUT, /* href="about:..." */ ANCHOR_INFO, /* href="info:.." */ ANCHOR_MAN, /* href="man:..." */ ANCHOR_FORM_IMAGE /* <input type=image>, only used internally */ }URLType; /***** * Procedure to be called whenever a script is encountered * Arguments: * Tidget: XmHTMLWidget id * String: script source text * TPointer: XmNclientData value * Return value: * data to be stored whenever a document event should be processed. * This data is unused internally and is provided as the user_data * argument in the XmHTMLEvent structure. For example, the return value * could be a pointer into some internal procedural database, a ptr to a * compiled script procedure or the script source text if you want to * process it at some later time (when the event occurs). * * When NULL is returned the event in question is disabled. *****/ typedef TPointer (*XmHTMLEventProc)(TWidget, String, TPointer); /***** * HTML Form component types *****/ typedef enum{ FORM_TEXT = 1, /* textfield */ FORM_PASSWD, /* password textfield */ FORM_CHECK, /* checkbox */ FORM_RADIO, /* radiobox */ FORM_RESET, /* reset button */ FORM_FILE, /* filelisting */ FORM_SELECT, /* select parent */ FORM_OPTION, /* select child */ FORM_TEXTAREA, /* multiline edit field */ FORM_IMAGE, /* drawbutton */ FORM_HIDDEN, /* hidden input */ FORM_SUBMIT /* submit button */ }componentType; /***** * Supported HTML Form method types *****/ enum{ XmHTML_FORM_GET = 0, /* method = get */ XmHTML_FORM_POST, /* method = post */ XmHTML_FORM_PIPE /* method = pipe */ }; /***** * possible error codes for XmNparserCallback *****/ typedef enum{ HTML_UNKNOWN_ELEMENT = 1, /* unknown HTML element */ HTML_BAD, /* very badly placed element */ HTML_OPEN_BLOCK, /* block still open while new block started */ HTML_CLOSE_BLOCK, /* block closed but was never opened */ HTML_OPEN_ELEMENT, /* unbalanced terminator */ HTML_NESTED, /* improperly nested element */ HTML_VIOLATION, /* bad content for current block/element */ HTML_NOTIFY, /* notification of text insertion/removal */ HTML_INTERNAL /* internal parser error */ }parserError; /***** * And corresponding values for XmNenableBadHTMLWarnings. * These are or'd together. * XmNONE disables warnings and XmHTML_ALL enables all warnings. * See parserError for their meaning. *****/ enum{ XmHTML_NONE = 0, /* no warnings */ XmHTML_UNKNOWN_ELEMENT = 1, XmHTML_BAD = 2, XmHTML_OPEN_BLOCK = 4, XmHTML_CLOSE_BLOCK = 8, XmHTML_OPEN_ELEMENT = 16, XmHTML_NESTED = 32, XmHTML_VIOLATION = 64, XmHTML_ALL = 127 /* all warnings */ }; /***** * possible action codes for the action field in the XmHTMLParserCallbackStruct *****/ enum{ HTML_REMOVE = 1, /* remove offending element */ HTML_INSERT, /* insert missing element */ HTML_SWITCH, /* switch offending and expected element */ HTML_KEEP, /* keep offending element */ HTML_IGNORE, /* ignore, proceed as if nothing happened */ HTML_ALIAS, /* alias an unknown element to known one */ HTML_TERMINATE /* terminate parser */ }; /***** * Possible return codes for XmHTMLImageGetType(). *****/ enum{ IMAGE_ERROR = 0, /* error on image loading */ IMAGE_UNKNOWN, /* unknown image */ IMAGE_XPM, /* X11 pixmap */ IMAGE_XBM, /* X11 bitmap */ IMAGE_GIF, /* CompuServe(C) Gif87a or Gif89a */ IMAGE_GIFANIM, /* animated gif */ IMAGE_GIFANIMLOOP, /* animated gif with loop extension */ IMAGE_GZF, /* compatible Gif87a or Gif89a */ IMAGE_GZFANIM, /* compatible animated gif */ IMAGE_GZFANIMLOOP, /* compatible animated gif */ IMAGE_JPEG, /* JPEG image */ IMAGE_PNG, /* PNG image */ IMAGE_FLG /* Fast Loadable Graphic */ }; /***** * Possible return values for a function installed on the * XmNprogressiveReadProc resource. *****/ #define STREAM_OK 1 /* internally used value */ #define STREAM_END 0 /* data stream ended (no more data) */ #define STREAM_SUSPEND -1 /* data stream suspended (not enough data) */ #define STREAM_ABORT -2 /* data stream aborted */ #define STREAM_RESIZE -3 /* resize input buffer */ /***** * Possible return values for the XmNdecodeGIFProc resource and * values for the XmHTMLGIFStream state. *****/ #define GIF_STREAM_OK 2 #define GIF_STREAM_END 1 #define GIF_STREAM_ERR 0 #define GIF_STREAM_INIT -1 #define GIF_STREAM_FINAL -2 /***** * Possible return values from a number of image related routines. * The actual meaning depends on the routine used. *****/ typedef enum{ XmIMAGE_ERROR = 0, /* unknown error occured */ XmIMAGE_BAD, /* bad function call: missing arg or so */ XmIMAGE_UNKNOWN, /* provided XmImage/XmImageInfo unknown/unbound */ XmIMAGE_ALMOST, /* action completed, further response necessary */ XmIMAGE_OK /* action completed. */ }XmImageStatus; /***** * Possible values for transparency (value for the "bg" field in both * XmImage and XmImageInfo structures). Possible values are: * * XmIMAGE_NONE * indicates the image is not transparent * XmIMAGE_TRANSPARENCY_BG * indicates the image achieves transparency by substituting the current * background setting (can be a single color or background image. Internally, * such transparency is achieved by using a clipmask). * XmIMAGE_TRANSPARENCY_ALPHA * indicates the image achieves transparency by using an alpha channel. * This transparency is currently only used by PNG images with an alpha * channel or a tRNS chunk (which is expanded to an alpha channel internally). *****/ enum{ XmIMAGE_NONE = 0, XmIMAGE_TRANSPARENCY_BG, XmIMAGE_TRANSPARENCY_ALPHA }; /***** * Possible values for the colorspace value. * * XmIMAGE_COLORSPACE_GRAYSCALE * image contains only shades of gray. The colorcube is reduced to a 1D * representation. All components in a shade have the same value. The * pixel values are equal to the value of a single color component. * XmIMAGE_COLORSPACE_INDEXED * image uses a fixed palette. Colorcube is mapped to a 1D lookup-table. * XmIMAGE_COLORSPACE_RGB * image uses a full 3D colorcube. *****/ enum{ /* XmIMAGE_NONE */ XmIMAGE_COLORSPACE_GRAYSCALE = 1, XmIMAGE_COLORSPACE_INDEXED, XmIMAGE_COLORSPACE_RGB }; /***** * XmImageInfo structure options field bits. * The ``Set by default'' indicates a bit set when the XmHTMLImageDefaultProc * is used to read an image. The ``Read Only'' indicates a bit you should * consider as read-only. * XmIMAGE_DELAYED * Indicates the image is delayed, e.i. it will be provided at a later stage; * XmIMAGE_DEFERRED_FREE * Indicates XmHTML may free this structure when a new document is loaded. * XmIMAGE_IMMEDIATE_FREE * Indicates XmHTML may free this structure when XmHTML no longer needs it; * XmIMAGE_RGB_SINGLE * Indicates that the reds, greens and blues fields are allocated in a single * memory area instead of three seperate memory arrays. * XmIMAGE_ALLOW_SCALE * Indicates that scaling an image is allowed. * XmIMAGE_FRAME_IGNORE * Use with animations: set this bit when a frame falls outside the logical * screen area. No pixmap is created but the timeout for the frame is kept. * XmIMAGE_CLIPMASK * This bit is set when the returned XmImageInfo structure contains clipmask * data. XmHTML uses this info to create a clipping bitmap. Changing this * bit from set to unset will lead to a memory leak while changing it from * unset to set *without* providing a clipmask yourself *will* cause an error * to happen. You can set this bit when you are providing your own clipmask * (to provide non-rectangular images for example), PROVIDED you fill the * ``clip'' field with valid bitmap data (a stream of bytes in XYBitmap format * and the same size of the image). * XmIMAGE_SHARED_DATA * This bit is set when images share data. XmHTML sets this bit when the image * in question is an internal image, e.i., one for which the image data may * never be freed. Be carefull setting this bit yourself, since it prevents * XmHTML from freeing the image data present in the XmImageInfo structure. * It can easily lead to memory leaks when an image is *not* an internal * image. * XmIMAGE_PROGRESSIVE * Setting this bit will enable XmHTML progressive image loading. A function * *must* have been installed on the XmNprogressiveReadProc resource *prior* * to setting this bit. Installing a function on the XmNprogressiveEndProc * is optional. When this bit is set all other bits will be ignored. * XmIMAGE_DELAYED_CREATION * This bit is read-only. It is used internally by XmHTML for images with * an alpha channel. Alpha channel processing merges the current background * with the original RGB data from the image and uses the result to compose * the actual on-screen image (the merged data is stored in the ``data'' * field of the XmImageInfo structure). XmHTML needs to store the original * data somewhere, and when this bit is set it is stored in the ``rgb'' field * of the XmImageInfo structure. * When this bit is set, the returned XmImageInfo may *NOT BE FREED* as long * as the current document is alive. You can discard it as soon as a new * document is loaded. *****/ #define XmIMAGE_DELAYED (1<<1) #define XmIMAGE_DEFERRED_FREE (1<<2) /* set by default */ #define XmIMAGE_IMMEDIATE_FREE (1<<3) #define XmIMAGE_RGB_SINGLE (1<<4) /* set by default */ #define XmIMAGE_ALLOW_SCALE (1<<5) /* set by default */ #define XmIMAGE_FRAME_IGNORE (1<<6) #define XmIMAGE_CLIPMASK (1<<7) /* Read Only */ #define XmIMAGE_SHARED_DATA (1<<8) /* Read Only */ #define XmIMAGE_PROGRESSIVE (1<<9) #define XmIMAGE_DELAYED_CREATION (1<<10) /* Read Only */ /***** * XmImageInfo animation disposal values * A disposal method specifies what should be done before the current frame is * rendered. Possible values are: * XmIMAGE_DISPOSE_NONE * do nothing, overlays the previous frame with the current frame. * XmIMAGE_DISPOSE_BY_BACKGROUND * Restore to background color. The area used by the previous frame must * be restored to the background color/image * XmIMAGE_DISPOSE_BY_PREVIOUS * Restore to previous. The area used by the previous frame must be * restored to what was there prior to rendering the previous frame. *****/ enum{ /* XmIMAGE_NONE */ XmIMAGE_DISPOSE_NONE = 1, /* default behaviour */ XmIMAGE_DISPOSE_BY_BACKGROUND, XmIMAGE_DISPOSE_BY_PREVIOUS }; /***** * Primary image cache actions * (unimplemented) *****/ #define IMAGE_STORE 0 /* store an image in the cache */ #define IMAGE_GET 1 /* retrieve an image from the cache */ #define IMAGE_DISCARD 2 /* discard an image from the cache */ /***** * XmNperfectColors/XmNalphaChannelProcessing resource values. * * Note: these values are represented by the XmCEnableMode resource class. *****/ enum{ /* XmAUTOMATIC */ XmALWAYS = 1, XmNEVER }; /***** * Possible XmNimageMapToPalette/XmNimageRGBConversion resource values: * * XmQUICK * RGBConversion: * first checks if the 24bit image contains less than XmNmaxImageColors. * If not, XmHTML will dither to a fixed palette. This is fast but has * the disadvantage that the background color in an alpha channelled * image will not be matched exactly. * MapToPalette: * Use closest distance algorithm to map colors to the palette. No * error correction is performed. Reasonably fast, but quality * heavily depends on the distribution of the colors in the image. * XmBEST * RGBConversion (default): * first checks if the 24bit image contains less than XmNmaxImageColors. * If it is, the actual image colors are used. If not, a histogram of the * image is computed, the most used colors are selected and the resulting * image is dithered to this palette. * Offers best 24 to 8bit conversion and is probably faster than XmSLOW * as only images with more than XmNmaxImageColors will be dithered. * MapToPalette: * Ordered dithering using predefined error matrices. Reasonably fast and * quite good results; * XmFAST * RGBConversion: * Skips the check and dithers to a fixed palette right away. This is the * fastest way to do 24 to 8bit conversion but has the disadvantage that * every 24bit image is dithered to a fixed palette, regardless of the * actual no of colors in the image. * MapToPalette: * Simple ordered dithering. Fastest but probably the poorest results. * XmSLOW * RGBConversion: * Skips the check and does histogram stuff right away. * MapToPalette: * closest distance algorithm to map image colors to the palette and use * dynamic error correction. Slowest but best results; * XmDISABLED * RGBConversion: * ignored; * MapToPalette (default): * Disables palette mapping; * * Note: these values are represented by the XmCConversionMode resource class. *****/ typedef enum { XmQUICK = 0, XmBEST, XmFAST, XmSLOW, XmDISABLED } XmHTMLDitherType; /***** * Search directions: forward or backward search *****/ typedef enum{ XmHTML_FORWARD, XmHTML_BACKWARD }XmHTMLDirection; /***** * XmHTMLPosition is a fully opaque type *****/ typedef struct _XmHTMLObjectTableElement *XmHTMLPosition; /***** * Custom Papersize dimension unit type * (under construction) *****/ enum{ XmHTML_CHAR = 0, XmHTML_CENTIMETER, /* 1cm = 0.39in */ XmHTML_MILLIMETER, /* 1mm = 0.1cm */ XmHTML_INCH, /* 1in = 2.54cm */ XmHTML_PICA, /* 1pc = 12pt */ XmHTML_POINT /* 1in = 72.27pt, 1cm = 28.45pt */ }; /***** * XmHTMLTextGetFormatted paper size defines * (under construction) *****/ enum{ XmHTMLTEXT_PAPERSIZE_A4 = 0, XmHTMLTEXT_PAPERSIZE_LETTER, XmHTMLTEXT_PAPERSIZE_CUSTOM }; /***** * XmHTMLTextGetFormatted type definitions * (under construction) *****/ enum{ XmHTMLTEXT_PLAIN = 0, /* generate plain ASCII document */ XmHTMLTEXT_FORMATTED, /* generate formatted ASCII document */ XmHTMLTEXT_POSTSCRIPT /* generate formatted Postscript output */ }; /***** * XmHTMLTextGetFormatted Postscript option bits * (under construction) * The MIMIC_FONTS bit instructs XmHTML to use any of the supported postscript * fonts to approach the fonts used in the document. When set, all other font * bits are ignored. When not used, the PSFONT bits can be or'd together. * XmHTML will attempt to do the following mapping: * PSFONT_ROMAN/PSFONT_CENTURY -> default text font; * PSFONT_HELVETICA/PSFONT_LUCIDA -> fixed width font; * If only one of the PSFONT bits is set, the entire document will be rendered * in that font. *****/ #define XmHTMLTEXT_ADDHEADER (1<<1) #define XmHTMLTEXT_ADDFOOTER (1<<2) #define XmHTMLTEXT_PSFONT_ROMAN (1<<3) #define XmHTMLTEXT_PSFONT_HELVETICA (1<<4) #define XmHTMLTEXT_PSFONT_CENTURY (1<<5) #define XmHTMLTEXT_PSFONT_LUCIDA (1<<6) #define XmHTMLTEXT_MIMIC_FONTS (1<<7) /***** * XmHTMLGetHeadAttributes mask bits *****/ #define HeadClear ((unsigned char)0) /* clear everything */ #define HeadDocType (1<<0) /* fill doctype member */ #define HeadTitle (1<<1) /* fill title member */ #define HeadIsIndex (1<<2) /* fill isIndex member */ #define HeadBase (1<<3) /* fill Base member */ #define HeadMeta (1<<4) /* fill meta members */ #define HeadLink (1<<5) /* fill link members */ #define HeadScript (1<<6) /* fill script members */ #define HeadStyle (1<<7) /* fill Style members */ #define HeadAll ((unsigned char)~0) /* fill all members */ /***** * XmImage frame selection flags. * any positive number will return the requested frame. If larger than * total framecount, last frame is returned. *****/ #define AllFrames -1 /* do all frames */ #define FirstFrame -2 /* only use first frame */ #define LastFrame -3 /* only do last frame */ /***** * XmImage configuration flags *****/ #define ImageFSDither (1L<<1) /* Floyd-Steinberg on quantized images */ #define ImageCreateGC (1L<<2) /* create gc for image */ #define ImageWorkSpace (1L<<3) /* create animation workspace */ #define ImageClipmask (1L<<4) /* create clipmask */ #define ImageBackground (1L<<5) /* substitute background pixel */ #define ImageQuantize (1L<<6) /* quantize image */ #define ImageMaxColors (1L<<7) /* sets maximum colors */ #define ImageGifDecodeProc (1L<<8) /* gif lzw decoder function */ #define ImageGifzCmd (1L<<9) /* gif lzw uncompress command */ #define ImageFrameSelect (1L<<10)/* frame selection */ #define ImageScreenGamma (1L<<11)/* gamma correction. JPEG and PNG only */ /****************************************************************************** * Commonly used structures ******************************************************************************/ /***** * Representation of parsed HTML elements *****/ typedef struct _XmHTMLObject{ htmlEnum id; /* internal ID for this element */ String element; /* element text */ String attributes; /* element attributes (if any) */ Boolean is_end; /* true if this is a closing element */ Boolean terminated; /* true if element has closing counterpart */ Cardinal line; /* line number in input for this element */ struct _XmHTMLObject *next; struct _XmHTMLObject *prev; }XmHTMLObject; /***** * Custom papersize definition *****/ typedef struct _XmHTMLPaperSize{ unsigned char unit_type; /* unit in which dimensions are specified */ unsigned char paper_type; /* type of paper: A4, US or custom */ Cardinal width; /* total paper width */ Cardinal height; /* total paper height */ Cardinal left_margin; /* left text margin */ Cardinal right_margin; /* right text margin */ Cardinal top_margin; /* top text margin */ Cardinal bottom_margin; /* bottom text margin */ }XmHTMLPaperSize; /***** * The following structure is returned by the XmHTMLImageDefaultProc convenience * function. When a procedure for the XmNimageProc resource is installed, * it *must* return this structure. *****/ typedef struct _XmImageInfo { /* regular image fields */ String url; /* original location of image */ unsigned char *data; /* raw image data. ZPixmap format */ unsigned char *clip; /* raw clipmask data. XYBitmap format */ Dimension width; /* used image width, in pixels */ Dimension height; /* used image height, in pixels */ Dimension *reds; /* red image pixels */ Dimension *greens; /* green image pixels */ Dimension *blues; /* blue image pixels */ int bg; /* transparent pixel index/type */ unsigned int ncolors; /* Number of colors in the image */ unsigned int options; /* image option bits */ /* image classification fields and original data */ unsigned char type; /* image type, see the IMAGE_ enum above */ unsigned char depth; /* bits per pixel for this image */ unsigned char colorspace; /* colorspace for this image */ unsigned char transparency; /* transparency type for this image */ Dimension swidth; /* image width as read from image */ Dimension sheight; /* image height as read from image */ unsigned int scolors; /* Original number of colors in the image */ /* Special fields for images with an alpha channel */ unsigned char *alpha; /* alpha channel data */ float fg_gamma; /* image gamma */ /* Additional animation data */ int x; /* logical screen x-position for this frame */ int y; /* logical screen y-position for this frame */ int loop_count; /* animation loop count */ unsigned char dispose; /* image disposal method */ int timeout; /* frame refreshment in milliseconds */ int nframes; /* no of animation frames remaining */ struct _XmImageInfo *frame; /* ptr to next animation frame */ TPointer user_data; /* any data to be stored with this image */ }XmImageInfo, *XmImageInfoStruct; /* XmHTML method to load images */ typedef XmImageInfo* (*XmImageProc)(TWidget, String, TPointer); /**** * The next two structures constitute the XmImage definition which are used by * the XmImageCreate and XmImageDestroy routines. Please note that the *only* * safe way to destroy an XmImage is to use the XmImageDestroy function. * XmHTML does not use the XmImage structure, it is provided for your * convenience. ****/ /**** * Animation frame data. ****/ typedef struct{ int x; /* x position in logical screen */ int y; /* y position in logical screen */ int w; /* width of this particular frame */ int h; /* height of this particular frame */ int timeout; /* timeout for the next frame */ unsigned char dispose; /* previous frame disposal method */ TPixmap pixmap; /* actual image */ TPixmap clip; /* image clipmask */ TPixmap prev_state; /* previous screen state */ }XmImageFrame; /***** * Actual image definition. * If you want access to the xcc member, include the XCC.h header file. *****/ typedef struct{ String file; /* originating file */ unsigned char type; /* image type, see the IMAGE_ enum below */ TPixmap pixmap; /* actual image */ TPixmap clip; /* for transparant pixmaps */ unsigned int options; /* image option bits */ int width; /* current image width, in pixels */ int height; /* current image height, in pixels */ int ncolors; /* no of colors in this image */ int scolors; /* specified no of colors */ int swidth; /* image width as read from image */ int sheight; /* image height as read from image */ int depth; /* depth of this image */ int npixels; /* no of really allocated pixels */ TGC gc; /* graphics context for rendering */ /* animation data */ XmImageFrame *frames; /* array of animation frames */ int nframes; /* no of frames following */ int current_frame; /* current frame count */ int current_loop; /* current loop count */ int loop_count; /* maximum loop count */ TIntervalId proc_id; /* timer id for animations */ TWidget w; /* image owner */ TAppContext context; /* Application context for animations */ /* private data */ struct _XColorContext *xcc; /* a lot of visual info */ }XmImage; /***** * Link member information. *****/ typedef struct { String url; /* value of URL tag */ String rel; /* value of REL tag */ String rev; /* value of REV tag */ String title; /* value of TITLE tag */ }XmHTMLLinkDataRec, *XmHTMLLinkDataPtr; /***** * Meta member information. *****/ typedef struct { String http_equiv; /* value of HTTP-EQUIV tag */ String name; /* value of NAME tag */ String content; /* value of CONTENT tag */ }XmHTMLMetaDataRec, *XmHTMLMetaDataPtr; /***** * XmHTMLHeadAttributes definition *****/ typedef struct{ String doctype; /* doctype data */ String title; /* document title */ Boolean is_index; /* true when the <isindex> element exists */ String base; /* value of the <base> element */ int num_meta; /* number of META info to process */ XmHTMLMetaDataPtr meta; /* array of META info to process */ int num_link; /* number of LINK info to process */ XmHTMLLinkDataPtr link; /* array of LINK info to process */ String style_type; /* value of the style type element tag */ String style; /* <style></style> contents */ String script_lang; /* value of the language element tag */ String script; /* <script></script> contents */ }XmHTMLHeadAttributes; /***** * XmHTMLFontCacheInfo definition. This structure is returned by the * XmHTMLGetFontCacheInfo convenience routine and contains information about * the font cache bound to the display of a given widget. * The fonts and mapping arrays are in sync: when a name in the fonts array * has a non-NULL entry at the corresponding position in the mapping array, * the value of the mapping entry is the real font being used. *****/ typedef struct{ int nentries; /* total no of cached fonts */ int nmaps; /* of which this many are mapped fonts */ int nlookups; /* no of search actions */ int nrequests; /* no of requests made */ int hits; /* no of hits */ int misses; /* no of misses */ String *fonts; /* array of font names, size nentries */ String *mapping; /* array of font mappings, size nentries */ int nwidgets; /* no of widgets using this cache */ WidgetList widgets; /* array of widgets */ }XmHTMLFontCacheInfo; /***** * forward declaration of XmHTMLAnchorCallback structure *****/ typedef struct _XmHTMLAnchorCallbackStruct *XmHTMLAnchorPtr; /***** * XmHTMLXYToInfo return value * This structure and any of it members may *never* be freed by the caller. *****/ typedef struct { Cardinal line; /* line number at selected position */ Boolean is_map; /* true when clicked image is an imagemap */ int x,y; /* position relative to image corner */ XmImageInfo *image; /* image data */ XmHTMLAnchorPtr anchor; /* possible anchor data */ }XmHTMLInfoStructure, *XmHTMLInfoPtr; /***** * XmHTML progressive object loading * (PLC stands for Progressive Loader Context) *****/ typedef struct _XmHTMLPLCStream{ Cardinal total_in; /* no of bytes received so far */ Cardinal min_out; /* minimum number of bytes requested */ Cardinal max_out; /* maximum number of bytes requested */ TPointer user_data; /* any data registered on this PLC */ unsigned char pad[24]; /* reserved for future use */ }XmHTMLPLCStream; /***** * External GIF decoder stream object. This is the only argument to any * procedure installed on the XmNdecodeGIFProc resource. * * The first block is kept up to date by XmHTML and is read-only. When state * is GIF_STREAM_INIT, the decoder should initialize it's private data and store * it in the external_state field so that it can be used for successive calls * to the decoder. When state is GIF_STREAM_FINAL, the decoder should wrapup * and flush all pending data. It can also choose to destruct it's internal * data structures here (another call with state set to GIF_STREAM_END will be * made when the internal loader is destroying it's internal objects as * well). * * All following fields are the ``public'' fields and must be updated by the * external decoder. The msg field can be set to an error message if the * external decoder fails for some reason. XmHTML will then display this * error message and abort this image. *****/ typedef struct _XmHTMLGIFStream{ /* read-only fields */ int state; /* decoder state */ int codesize; /* initial LZW codesize */ Boolean is_progressive; /* when used by a progressive loader */ unsigned char *next_in; /* next input byte */ Cardinal avail_in; /* number of bytes available at next_in */ Cardinal total_in; /* total nb of input bytes read so far */ /* fields to be updated by caller */ unsigned char *next_out; /* next output byte should be put there */ Cardinal avail_out; /* remaining free space at next_out */ Cardinal total_out; /* total nb of bytes output so far */ String msg; /* last error message, or NULL */ TPointer external_state; /* room for decoder-specific data */ }XmHTMLGIFStream; /* and the proto for the XmNdecodeGIFProc resource */ typedef int (*XmImageGifProc)(XmHTMLGIFStream*); /***** * Progressive Loading function prototypes. * XmHTMLGetDataProc: proto for function installed on the * XmNprogressiveReadProc resource; * XmHTMLEndDataProc: proto for function installed on the * XmNprogressiveEndProc resource; *****/ typedef int (*XmHTMLGetDataProc)(XmHTMLPLCStream*, TPointer); typedef void (*XmHTMLEndDataProc)(XmHTMLPLCStream*, TPointer, int, Boolean); /***** * possible values for the third argument on the EndDataProc *****/ enum{ /* XmHTML_NONE = 0 */ /* PLCObject referenced by all objects */ XmPLC_IMAGE, /* PLCObject for an image */ XmPLC_DOCUMENT, /* PLCObject for a document */ XmPLC_FINISHED /* indicates all plc's have been processed */ }; /***** * XmImage configuration *****/ typedef struct{ unsigned long flags; /* XmImage configuration flags, see above */ int ncolors; /* desired number of colors */ int which_frames; /* animation frames selection flag */ int bg_color; /* background pixel on transparent images */ String z_cmd; /* gif uncompress command */ XmImageGifProc gif_proc; /* external gif decoder */ float gamma; /* gamma correction. JPEG and PNG only */ }XmImageConfig; /****************************************************************************** * Callback structures * Unless explicitly mentioned, *none* of these structures (or any of its * members) may be freed. ******************************************************************************/ /***** * XmNactivateCallback and XmNanchorTrackCallback callback structure. *****/ typedef struct _XmHTMLAnchorCallbackStruct{ int reason; /* the reason the callback was called */ TEvent *event; /* event structure that triggered callback */ URLType url_type; /* type of url referenced */ Cardinal line; /* line number of the selected anchor */ String href; /* pointer to the anchor value */ String target; /* pointer to target value */ String rel; /* pointer to rel value */ String rev; /* pointer to rev value */ String title; /* pointer to title value */ Boolean is_frame; /* true when inside a frame */ Boolean doit; /* local anchor vetoing flag */ Boolean visited; /* local anchor visited flag */ }XmHTMLAnchorCallbackStruct; typedef Boolean (*XmHTMLAnchorProc)(TWidget, String, TPointer); /***** * XmNeventCallback callback structure. *****/ typedef struct{ int reason; /* the reason the event was called */ TEvent *event; /* event triggering this action */ int type; /* HTML4.0 event type, see above */ TPointer data; /* HTML4.0 event callback data */ }XmHTMLEventCallbackStruct; /***** * XmNdocumentCallback callback structure. *****/ typedef struct { int reason; /* the reason the callback was called */ TEvent *event; /* always NULL for XmNdocumentCallback */ Boolean html32; /* True if document was HTML 3.2 conforming */ Boolean verified; /* True if document has been verified */ Boolean balanced; /* True if parser tree is balanced */ Boolean terminated; /* True if parser terminated prematurely */ int pass_level; /* current parser level count. Starts at 1 */ Boolean redo; /* perform another pass? */ }XmHTMLDocumentCallbackStruct, *XmHTMLDocumentPtr; /***** * XmNformCallback callback structure. *****/ /***** * Form Component data *****/ typedef struct { componentType type; /* Form component type */ String name; /* component name */ String value; /* component value */ }XmHTMLFormDataRec, *XmHTMLFormDataPtr; /***** * Actual XmNformCallback callback structure. *****/ typedef struct { int reason; /* the reason the callback was called */ TEvent *event; /* event structure that triggered callback */ String action; /* URL or cgi-bin destination */ String enctype; /* form encoding */ int method; /* Form Method, GET, POST or PIPE */ int ncomponents; /* no of components in this form */ XmHTMLFormDataPtr components; }XmHTMLFormCallbackStruct, *XmHTMLFormPtr; /***** * XmNframeCallback callback structure. * This callback is activated when one of the following events occurs: * 1. XmHTML wants to create a frame, reason = XmCR_HTML_FRAMECREATE * can be veto'd by setting doit to False and supplying a HTML widget * id yourself; * 2. XmHTML wants to destroy a frame, reason = XmCR_HTML_FRAMEDESTROY * can be veto'd by setting doit to False (widget reuse). * 3. XmHTML has finished creating a frame, reason = XmCR_HTML_FRAME. * This is the time to attach callbacks and set additional resources on the * newly created XmHTMLWidget. *****/ typedef struct { int reason; /* the reason the callback was called */ TEvent *event; /* event structure that triggered callback */ String src; /* requested document */ String name; /* frame name */ TWidget html; /* XmHTML widget id */ Boolean doit; /* destroy/create vetoing flag */ }XmHTMLFrameCallbackStruct, *XmHTMLFramePtr; /***** * XmNimagemapCallback callback structure. * callback reasons can be one of the following: * XmCR_HTML_IMAGEMAP_ACTIVATE * user clicked on an image. Valid fields are x, y and image_name. x and y * are relative to the upper-left corner of the image. Only invoked when * an image has it's ismap attribute set and no usemap is present for this * image. * XmCR_HTML_IMAGEMAP * an image requires an external imagemap. The only valid field is map_name * which contains the location of the imagemap to fetch. If the contents * of this imagemap is set in the map_contents field, it will be loaded * by the widget. Alternatively, one could also use the XmHTMLAddImagemap * convenience routine to set an imagemap into the widget. *****/ typedef struct { int reason; /* the reason the callback was called */ TEvent *event; /* event structure that triggered callback */ int x,y; /* position relative to the upper-left image corner */ String image_name; /* name of referenced image, value of src attribute */ String map_name; /* name of imagemap to fetch */ String map_contents;/* contents of fetched imagemap */ XmImageInfo *image; /* image data */ }XmHTMLImagemapCallbackStruct, *XmHTMLImagemapPtr; /***** * XmNlinkCallback callback structure. *****/ typedef struct{ int reason; /* the reason the callback was called */ TEvent *event; /* event structure that triggered callback */ int num_link; /* number of LINK info to process */ XmHTMLLinkDataPtr link; /* array of LINK info to process */ }XmHTMLLinkCallbackStruct, *XmHTMLLinkPtr; /* Don't add anything after this endif! */ #endif /* _HTML_h_ */