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