dlls/riched20/editstr.h

   1 /*
   2  * RichEdit - structures and constant
   3  *
   4  * Copyright 2004 by Krzysztof Foltman
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  19  */
  20
  21 #ifndef __EDITSTR_H
  22 #define __EDITSTR_H
  23
  24 #ifndef _WIN32_IE
  25 #define _WIN32_IE 0x0400
  26 #endif
  27
  28 #include <assert.h>
  29 #include <stdarg.h>
  30 #include <stdio.h>
  31 #include <stdlib.h>
  32 #include <limits.h>
  33
  34 #define COBJMACROS
  35 #define NONAMELESSUNION
  36 #define NONAMELESSSTRUCT
  37
  38 #include <windef.h>
  39 #include <winbase.h>
  40 #include <winnls.h>
  41 #include <winnt.h>
  42 #include <wingdi.h>
  43 #include <winuser.h>
  44 #include <richedit.h>
  45 #include <commctrl.h>
  46 #include <ole2.h>
  47 #include <richole.h>
  48 #include "imm.h"
  49 #include <textserv.h>
  50 #include "usp10.h"
  51
  52 #include "wine/debug.h"
  53 #include "wine/list.h"
  54
  55 #ifdef __i386__
  56 extern const struct ITextHostVtbl itextHostStdcallVtbl;
  57 #endif /* __i386__ */
  58
  59 typedef struct tagME_String
  60 {
  61   WCHAR *szData;
  62   int nLen, nBuffer;
  63 } ME_String;
  64
  65 typedef struct tagME_Style
  66 {
  67   CHARFORMAT2W fmt;
  68
  69   HFONT hFont; /* cached font for the style */
  70   TEXTMETRICW tm; /* cached font metrics for the style */
  71   int nRefs; /* reference count */
  72   SCRIPT_CACHE script_cache;
  73 } ME_Style;
  74
  75 typedef enum {
  76   diInvalid,
  77   diTextStart, /* start of the text buffer */
  78   diParagraph, /* paragraph start */
  79   diCell, /* cell start */
  80   diRun, /* run (sequence of chars with the same character format) */
  81   diStartRow, /* start of the row (line of text on the screen) */
  82   diTextEnd, /* end of the text buffer */
  83
  84   /********************* these below are meant for finding only *********************/
  85   diStartRowOrParagraph, /* 7 */
  86   diStartRowOrParagraphOrEnd,
  87   diRunOrParagraph,
  88   diRunOrStartRow,
  89   diParagraphOrEnd,
  90   diRunOrParagraphOrEnd, /* 12 */
  91 } ME_DIType;
  92
  93 #define SELECTIONBAR_WIDTH 8
  94
  95 /******************************** run flags *************************/
  96 #define MERF_STYLEFLAGS 0x0FFF
  97 /* run contains non-text content, which has its own rules for wrapping, sizing etc */
  98 #define MERF_GRAPHICS   0x001
  99 /* run is a tab (or, in future, any kind of content whose size is dependent on run position) */
 100 #define MERF_TAB        0x002
 101 /* run is a cell boundary */
 102 #define MERF_ENDCELL    0x004 /* v4.1 */
 103
 104 #define MERF_NONTEXT (MERF_GRAPHICS | MERF_TAB | MERF_ENDCELL)
 105
 106 /* run is splittable (contains white spaces in the middle or end) */
 107 #define MERF_SPLITTABLE 0x001000
 108 /* run starts with whitespaces */
 109 #define MERF_STARTWHITE 0x002000
 110 /* run ends with whitespaces */
 111 #define MERF_ENDWHITE   0x004000
 112 /* run is completely made of whitespaces */
 113 #define MERF_WHITESPACE 0x008000
 114 /* the "end of paragraph" run, contains 1 character */
 115 #define MERF_ENDPARA    0x100000
 116 /* forcing the "end of row" run, contains 1 character */
 117 #define MERF_ENDROW     0x200000
 118 /* run is hidden */
 119 #define MERF_HIDDEN     0x400000
 120 /* start of a table row has an empty paragraph that should be skipped over. */
 121 #define MERF_TABLESTART 0x800000 /* v4.1 */
 122
 123 /* runs with any of these flags set cannot be joined */
 124 #define MERF_NOJOIN (MERF_GRAPHICS|MERF_TAB|MERF_ENDPARA|MERF_ENDROW)
 125 /* runs that don't contain real text */
 126 #define MERF_NOTEXT (MERF_GRAPHICS|MERF_TAB|MERF_ENDPARA|MERF_ENDROW)
 127
 128 /* those flags are kept when the row is split */
 129 #define MERF_SPLITMASK (~(0))
 130
 131 /******************************** para flags *************************/
 132
 133 /* this paragraph was already wrapped and hasn't changed, every change resets that flag */
 134 #define MEPF_REWRAP   0x01
 135 /* v4.1 */
 136 #define MEPF_CELL     0x04 /* The paragraph is nested in a cell */
 137 #define MEPF_ROWSTART 0x08 /* Hidden empty paragraph at the start of the row */
 138 #define MEPF_ROWEND   0x10 /* Visible empty paragraph at the end of the row */
 139 #define MEPF_COMPLEX  0x20 /* Use uniscribe */
 140
 141 /******************************** structures *************************/
 142
 143 struct tagME_DisplayItem;
 144
 145 typedef struct tagME_Run
 146 {
 147   ME_Style *style;
 148   struct tagME_Paragraph *para; /* ptr to the run's paragraph */
 149   int nCharOfs; /* relative to para's offset */
 150   int len;      /* length of run's text */
 151   int nWidth; /* width of full run, width of leading&trailing ws */
 152   int nFlags;
 153   int nAscent, nDescent; /* pixels above/below baseline */
 154   POINT pt; /* relative to para's position */
 155   REOBJECT *ole_obj; /* FIXME: should be a union with strText (at least) */
 156
 157   SCRIPT_ANALYSIS script_analysis;
 158   int num_glyphs, max_glyphs;
 159   WORD *glyphs;
 160   SCRIPT_VISATTR *vis_attrs;
 161   int *advances;
 162   GOFFSET *offsets;
 163   int max_clusters;
 164   WORD *clusters;
 165 } ME_Run;
 166
 167 typedef struct tagME_Border
 168 {
 169   int width;
 170   COLORREF colorRef;
 171 } ME_Border;
 172
 173 typedef struct tagME_BorderRect
 174 {
 175   ME_Border top;
 176   ME_Border left;
 177   ME_Border bottom;
 178   ME_Border right;
 179 } ME_BorderRect;
 180
 181 typedef struct tagME_Paragraph
 182 {
 183   PARAFORMAT2 *pFmt;
 184   ME_String *text;
 185
 186   struct tagME_DisplayItem *pCell; /* v4.1 */
 187   ME_BorderRect border;
 188
 189   int nCharOfs;
 190   int nFlags;
 191   POINT pt;
 192   int nHeight, nWidth;
 193   int nRows;
 194   struct tagME_DisplayItem *prev_para, *next_para;
 195 } ME_Paragraph;
 196
 197 typedef struct tagME_Cell /* v4.1 */
 198 {
 199   int nNestingLevel; /* 0 for normal cells, and greater for nested cells */
 200   int nRightBoundary;
 201   ME_BorderRect border;
 202   POINT pt;
 203   int nHeight, nWidth;
 204   int yTextOffset; /* The text offset is caused by the largest top border. */
 205   struct tagME_DisplayItem *prev_cell, *next_cell, *parent_cell;
 206 } ME_Cell;
 207
 208 typedef struct tagME_Row
 209 {
 210   int nHeight;
 211   int nBaseline;
 212   int nWidth;
 213   int nLMargin;
 214   int nRMargin;
 215   POINT pt;
 216 } ME_Row;
 217
 218 /* the display item list layout is like this:
 219  * - the document consists of paragraphs
 220  * - each paragraph contains at least one run, the last run in the paragraph
 221  *   is an end-of-paragraph run
 222  * - each formatted paragraph contains at least one row, which corresponds
 223  *   to a screen line (that's why there are no rows in an unformatted
 224  *   paragraph
 225  * - the paragraphs contain "shortcut" pointers to the previous and the next
 226  *   paragraph, that makes iteration over paragraphs faster
 227  * - the list starts with diTextStart and ends with diTextEnd
 228  */
 229
 230 typedef struct tagME_DisplayItem
 231 {
 232   ME_DIType type;
 233   struct tagME_DisplayItem *prev, *next;
 234   union {
 235     ME_Run run;
 236     ME_Row row;
 237     ME_Cell cell;
 238     ME_Paragraph para;
 239   } member;
 240 } ME_DisplayItem;
 241
 242 typedef struct tagME_TextBuffer
 243 {
 244   ME_DisplayItem *pFirst, *pLast;
 245   ME_Style *pCharStyle;
 246   ME_Style *pDefaultStyle;
 247 } ME_TextBuffer;
 248
 249 typedef struct tagME_Cursor
 250 {
 251   ME_DisplayItem *pPara;
 252   ME_DisplayItem *pRun;
 253   int nOffset;
 254 } ME_Cursor;
 255
 256 typedef enum {
 257   umAddToUndo,
 258   umAddToRedo,
 259   umIgnore,
 260   umAddBackToUndo
 261 } ME_UndoMode;
 262
 263 enum undo_type
 264 {
 265     undo_insert_run,
 266     undo_delete_run,
 267     undo_join_paras,
 268     undo_split_para,
 269     undo_set_para_fmt,
 270     undo_set_char_fmt,
 271     undo_end_transaction,          /* marks the end of a group of changes for undo */
 272     undo_potential_end_transaction /* allows grouping typed chars for undo */
 273 };
 274
 275 struct insert_run_item
 276 {
 277     int pos, len;
 278     WCHAR *str;
 279     ME_Style *style;
 280     DWORD flags;
 281 };
 282
 283 struct delete_run_item
 284 {
 285     int pos, len;
 286 };
 287
 288 struct join_paras_item
 289 {
 290     int pos;
 291 };
 292
 293 struct split_para_item
 294 {
 295     int pos;
 296     PARAFORMAT2 fmt;
 297     ME_BorderRect border;
 298     ME_String *eol_str;
 299     DWORD flags;
 300     ME_BorderRect cell_border;
 301     int cell_right_boundary;
 302 };
 303
 304 struct set_para_fmt_item
 305 {
 306     int pos;
 307     PARAFORMAT2 fmt;
 308     ME_BorderRect border;
 309 };
 310
 311 struct set_char_fmt_item
 312 {
 313     int pos, len;
 314     CHARFORMAT2W fmt;
 315 };
 316
 317 struct undo_item
 318 {
 319     struct list entry;
 320     enum undo_type type;
 321     union
 322     {
 323         struct insert_run_item insert_run;
 324         struct delete_run_item delete_run;
 325         struct join_paras_item join_paras;
 326         struct split_para_item split_para;
 327         struct set_para_fmt_item set_para_fmt;
 328         struct set_char_fmt_item set_char_fmt;
 329     } u;
 330 };
 331
 332 typedef enum {
 333   stPosition = 0,
 334   stWord,
 335   stLine,
 336   stParagraph,
 337   stDocument
 338 } ME_SelectionType;
 339
 340 typedef struct tagME_FontTableItem {
 341   BYTE bCharSet;
 342   WCHAR *szFaceName;
 343 } ME_FontTableItem;
 344
 345
 346 #define STREAMIN_BUFFER_SIZE 4096 /* M$ compatibility */
 347
 348 struct tagME_InStream {
 349   EDITSTREAM *editstream;
 350   DWORD dwSize;
 351   DWORD dwUsed;
 352   char buffer[STREAMIN_BUFFER_SIZE];
 353 };
 354 typedef struct tagME_InStream ME_InStream;
 355
 356
 357 #define STREAMOUT_BUFFER_SIZE 4096
 358 #define STREAMOUT_FONTTBL_SIZE 8192
 359 #define STREAMOUT_COLORTBL_SIZE 1024
 360
 361 typedef struct tagME_OutStream {
 362   EDITSTREAM *stream;
 363   char buffer[STREAMOUT_BUFFER_SIZE];
 364   UINT pos, written;
 365   UINT nCodePage;
 366   UINT nFontTblLen;
 367   ME_FontTableItem fonttbl[STREAMOUT_FONTTBL_SIZE];
 368   UINT nColorTblLen;
 369   COLORREF colortbl[STREAMOUT_COLORTBL_SIZE];
 370   UINT nDefaultFont;
 371   UINT nDefaultCodePage;
 372   /* nNestingLevel = 0 means we aren't in a cell, 1 means we are in a cell,
 373    * an greater numbers mean we are in a cell nested within a cell. */
 374   UINT nNestingLevel;
 375 } ME_OutStream;
 376
 377 typedef struct tagME_FontCacheItem
 378 {
 379   LOGFONTW lfSpecs;
 380   HFONT hFont;
 381   int nRefs;
 382   int nAge;
 383 } ME_FontCacheItem;
 384
 385 #define HFONT_CACHE_SIZE 10
 386
 387 typedef struct tagME_TextEditor
 388 {
 389   HWND hWnd, hwndParent;
 390   ITextHost *texthost;
 391   IRichEditOle *reOle;
 392   BOOL bEmulateVersion10;
 393   ME_TextBuffer *pBuffer;
 394   ME_Cursor *pCursors;
 395   DWORD styleFlags;
 396   DWORD exStyleFlags;
 397   int nCursors;
 398   SIZE sizeWindow;
 399   int nTotalLength, nLastTotalLength;
 400   int nTotalWidth, nLastTotalWidth;
 401   int nAvailWidth; /* 0 = wrap to client area, else wrap width in twips */
 402   int nUDArrowX;
 403   COLORREF rgbBackColor;
 404   HBRUSH hbrBackground;
 405   BOOL bCaretAtEnd;
 406   int nEventMask;
 407   int nModifyStep;
 408   struct list undo_stack;
 409   struct list redo_stack;
 410   int nUndoStackSize;
 411   int nUndoLimit;
 412   ME_UndoMode nUndoMode;
 413   int nParagraphs;
 414   int nLastSelStart, nLastSelEnd;
 415   ME_DisplayItem *pLastSelStartPara, *pLastSelEndPara;
 416   ME_FontCacheItem pFontCache[HFONT_CACHE_SIZE];
 417   int nZoomNumerator, nZoomDenominator;
 418   RECT prevClientRect;
 419   RECT rcFormat;
 420   BOOL bDefaultFormatRect;
 421   BOOL bWordWrap;
 422   int nTextLimit;
 423   EDITWORDBREAKPROCW pfnWordBreak;
 424   LPRICHEDITOLECALLBACK lpOleCallback;
 425   /*TEXTMODE variable; contains only one of each of the following options:
 426    *TM_RICHTEXT or TM_PLAINTEXT
 427    *TM_SINGLELEVELUNDO or TM_MULTILEVELUNDO
 428    *TM_SINGLECODEPAGE or TM_MULTICODEPAGE*/
 429   int mode;
 430   BOOL bHideSelection;
 431   BOOL AutoURLDetect_bEnable;
 432   WCHAR cPasswordMask;
 433   BOOL bHaveFocus;
 434   BOOL bDialogMode; /* Indicates that we are inside a dialog window */
 435   /*for IME */
 436   int imeStartIndex;
 437   DWORD selofs; /* The size of the selection bar on the left side of control */
 438   ME_SelectionType nSelectionType;
 439
 440   /* Track previous notified selection */
 441   CHARRANGE notified_cr;
 442
 443   /* Cache previously set scrollbar info */
 444   SCROLLINFO vert_si, horz_si;
 445
 446   BOOL bMouseCaptured;
 447   int wheel_remain;
 448 } ME_TextEditor;
 449
 450 typedef struct tagME_Context
 451 {
 452   HDC hDC;
 453   POINT pt;
 454   RECT rcView;
 455   SIZE dpi;
 456   int nAvailWidth;
 457
 458   /* those are valid inside ME_WrapTextParagraph and related */
 459   ME_TextEditor *editor;
 460 } ME_Context;
 461
 462 typedef struct tagME_WrapContext
 463 {
 464   ME_Style *style;
 465   ME_Context *context;
 466   int nLeftMargin, nRightMargin, nFirstMargin;
 467   int nAvailWidth;
 468   int nRow;
 469   POINT pt;
 470   BOOL bOverflown, bWordWrap;
 471   ME_DisplayItem *pPara;
 472   ME_DisplayItem *pRowStart;
 473
 474   ME_DisplayItem *pLastSplittableRun;
 475 } ME_WrapContext;
 476
 477 #endif