programs/winhlp32/hlpfile.h

   1 /*
   2  * Help Viewer
   3  *
   4  * Copyright    1996 Ulrich Schmid
   5  *              2002, 2008 Eric Pouech
   6  *              2007 Kirill K. Smirnov
   7  *
   8  * This library is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU Lesser General Public
  10  * License as published by the Free Software Foundation; either
  11  * version 2.1 of the License, or (at your option) any later version.
  12  *
  13  * This library is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16  * Lesser General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU Lesser General Public
  19  * License along with this library; if not, write to the Free Software
  20  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  21  */
  22
  23 struct tagHelpFile;
  24
  25 typedef struct
  26 {
  27     char        type[10];
  28     char        name[9];
  29     char        caption[51];
  30     POINT       origin;
  31     SIZE        size;
  32     int         style;
  33     DWORD       win_style;
  34     COLORREF    sr_color;       /* color for scrollable region */
  35     COLORREF    nsr_color;      /* color for non scrollable region */
  36 } HLPFILE_WINDOWINFO;
  37
  38 typedef struct tagHlpFileLink
  39 {
  40     enum {hlp_link_link, hlp_link_popup, hlp_link_macro} cookie;
  41     LPCSTR      string;         /* name of the file to for the link (NULL if same file) */
  42     LONG        hash;           /* topic index */
  43     unsigned    bClrChange : 1; /* true if the link is green & underlined */
  44     unsigned    bHotSpot : 1;   /* true if the link is an hotspot (actually HLPFILE_HOTSPOTLINK) */
  45     unsigned    window;         /* window number for displaying the link (-1 is current) */
  46     DWORD       cpMin;
  47     DWORD       cpMax;
  48     struct tagHlpFileLink* next;
  49 } HLPFILE_LINK;
  50
  51 typedef struct tagHlpFileHotSpotLink
  52 {
  53     HLPFILE_LINK link;
  54     unsigned    x;
  55     unsigned    y;
  56     unsigned    width;
  57     unsigned    height;
  58 } HLPFILE_HOTSPOTLINK;
  59
  60 typedef struct tagHlpFileMacro
  61 {
  62     LPCSTR                      lpszMacro;
  63     struct tagHlpFileMacro*     next;
  64 } HLPFILE_MACRO;
  65
  66 typedef struct tagHlpFilePage
  67 {
  68     LPSTR                       lpszTitle;
  69     HLPFILE_MACRO*              first_macro;
  70
  71     HLPFILE_LINK*               first_link;
  72
  73     unsigned                    wNumber;
  74     unsigned                    offset;
  75     DWORD                       reference;
  76     struct tagHlpFilePage*      next;
  77     struct tagHlpFilePage*      prev;
  78
  79     DWORD                       browse_bwd;
  80     DWORD                       browse_fwd;
  81
  82     struct tagHlpFileFile*      file;
  83 } HLPFILE_PAGE;
  84
  85 typedef struct
  86 {
  87     LONG                        lMap;
  88     unsigned long               offset;
  89 } HLPFILE_MAP;
  90
  91 typedef struct
  92 {
  93     LOGFONTA                    LogFont;
  94     HFONT                       hFont;
  95     COLORREF                    color;
  96 } HLPFILE_FONT;
  97
  98 typedef struct tagHlpFileFile
  99 {
 100     BYTE*                       file_buffer;
 101     UINT                        file_buffer_size;
 102     LPSTR                       lpszPath;
 103     LPSTR                       lpszTitle;
 104     LPSTR                       lpszCopyright;
 105     HLPFILE_PAGE*               first_page;
 106     HLPFILE_PAGE*               last_page;
 107     HLPFILE_MACRO*              first_macro;
 108     BYTE*                       Context;
 109     BYTE*                       kwbtree;
 110     BYTE*                       kwdata;
 111     unsigned                    wMapLen;
 112     HLPFILE_MAP*                Map;
 113     unsigned                    wTOMapLen;
 114     unsigned*                   TOMap;
 115     unsigned long               contents_start;
 116
 117     struct tagHlpFileFile*      prev;
 118     struct tagHlpFileFile*      next;
 119
 120     unsigned                    wRefCount;
 121
 122     unsigned short              version;
 123     unsigned short              flags;
 124     unsigned short              charset;
 125     unsigned short              tbsize;     /* topic block size */
 126     unsigned short              dsize;      /* decompress size */
 127     unsigned short              compressed;
 128     unsigned                    hasPhrases;   /* file has |Phrases */
 129     unsigned                    hasPhrases40; /* file has |PhrIndex/|PhrImage */
 130     UINT                        num_phrases;
 131     unsigned*                   phrases_offsets;
 132     char*                       phrases_buffer;
 133
 134     BYTE**                      topic_map;
 135     BYTE*                       topic_end;
 136     UINT                        topic_maplen;
 137
 138     unsigned                    numBmps;
 139     HBITMAP*                    bmps;
 140
 141     unsigned                    numFonts;
 142     HLPFILE_FONT*               fonts;
 143
 144     unsigned                    numWindows;
 145     HLPFILE_WINDOWINFO*         windows;
 146     HICON                       hIcon;
 147
 148     BOOL                        has_popup_color;
 149     COLORREF                    popup_color;
 150
 151     LPSTR                       help_on_file;
 152 } HLPFILE;
 153
 154 /*
 155  * Compare function type for HLPFILE_BPTreeSearch function.
 156  *
 157  * PARAMS
 158  *     p       [I] pointer to testing block (key + data)
 159  *     key     [I] pointer to key value to look for
 160  *     leaf    [I] whether this function called for index of leaf page
 161  *     next    [O] pointer to pointer to next block
 162  */
 163 typedef int (*HLPFILE_BPTreeCompare)(void *p, const void *key,
 164                                      int leaf, void **next);
 165
 166 /*
 167  * Callback function type for HLPFILE_BPTreeEnum function.
 168  *
 169  * PARAMS
 170  *     p       [I]  pointer to data block
 171  *     next    [O]  pointer to pointer to next block
 172  *     cookie  [IO] cookie data
 173  */
 174 typedef void (*HLPFILE_BPTreeCallback)(void *p, void **next, void *cookie);
 175
 176 HLPFILE*      HLPFILE_ReadHlpFile(LPCSTR lpszPath);
 177 HLPFILE_PAGE* HLPFILE_PageByHash(HLPFILE* hlpfile, LONG lHash, ULONG* relative);
 178 HLPFILE_PAGE* HLPFILE_PageByMap(HLPFILE* hlpfile, LONG lMap, ULONG* relative);
 179 HLPFILE_PAGE* HLPFILE_PageByOffset(HLPFILE* hlpfile, LONG offset, ULONG* relative);
 180 LONG          HLPFILE_Hash(LPCSTR lpszContext);
 181 void          HLPFILE_FreeHlpFile(HLPFILE*);
 182
 183 void  HLPFILE_BPTreeEnum(BYTE*, HLPFILE_BPTreeCallback cb, void *cookie);
 184
 185 struct RtfData {
 186     BOOL        in_text;
 187     char*       data;           /* RTF stream start */
 188     char*       ptr;            /* current position in stream */
 189     unsigned    allocated;      /* overall allocated size */
 190     unsigned    char_pos;       /* current char position (in richedit) */
 191     char*       where;          /* pointer to feed back richedit */
 192     unsigned    font_scale;     /* how to scale fonts */
 193     HLPFILE_LINK*first_link;
 194     HLPFILE_LINK*current_link;
 195     BOOL        force_color;
 196     unsigned    relative;       /* offset within page to lookup for */
 197     unsigned    char_pos_rel;   /* char_pos correspondinf to relative */
 198 };
 199
 200 BOOL          HLPFILE_BrowsePage(HLPFILE_PAGE*, struct RtfData* rd,
 201                                  unsigned font_scale, unsigned relative);