2 * RichEdit - structures and constant
4 * Copyright 2004 by Krzysztof Foltman
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.
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.
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
25 #define _WIN32_IE 0x0400
35 #define NONAMELESSUNION
36 #define NONAMELESSSTRUCT
51 #include "wine/debug.h"
52 #include "wine/list.h"
55 extern const struct ITextHostVtbl itextHostStdcallVtbl;
58 typedef struct tagME_String
64 typedef struct tagME_Style
68 HFONT hFont; /* cached font for the style */
69 TEXTMETRICW tm; /* cached font metrics for the style */
70 int nRefs; /* reference count */
75 diTextStart, /* start of the text buffer */
76 diParagraph, /* paragraph start */
77 diCell, /* cell start */
78 diRun, /* run (sequence of chars with the same character format) */
79 diStartRow, /* start of the row (line of text on the screen) */
80 diTextEnd, /* end of the text buffer */
82 /********************* these below are meant for finding only *********************/
83 diStartRowOrParagraph, /* 7 */
84 diStartRowOrParagraphOrEnd,
88 diRunOrParagraphOrEnd, /* 12 */
91 #define SELECTIONBAR_WIDTH 8
93 /******************************** run flags *************************/
94 #define MERF_STYLEFLAGS 0x0FFF
95 /* run contains non-text content, which has its own rules for wrapping, sizing etc */
96 #define MERF_GRAPHICS 0x001
97 /* run is a tab (or, in future, any kind of content whose size is dependent on run position) */
98 #define MERF_TAB 0x002
99 /* run is a cell boundary */
100 #define MERF_ENDCELL 0x004 /* v4.1 */
102 #define MERF_NONTEXT (MERF_GRAPHICS | MERF_TAB | MERF_ENDCELL)
104 /* run is splittable (contains white spaces in the middle or end) */
105 #define MERF_SPLITTABLE 0x001000
106 /* run starts with whitespaces */
107 #define MERF_STARTWHITE 0x002000
108 /* run ends with whitespaces */
109 #define MERF_ENDWHITE 0x004000
110 /* run is completely made of whitespaces */
111 #define MERF_WHITESPACE 0x008000
112 /* the "end of paragraph" run, contains 1 character */
113 #define MERF_ENDPARA 0x100000
114 /* forcing the "end of row" run, contains 1 character */
115 #define MERF_ENDROW 0x200000
117 #define MERF_HIDDEN 0x400000
118 /* start of a table row has an empty paragraph that should be skipped over. */
119 #define MERF_TABLESTART 0x800000 /* v4.1 */
121 /* runs with any of these flags set cannot be joined */
122 #define MERF_NOJOIN (MERF_GRAPHICS|MERF_TAB|MERF_ENDPARA|MERF_ENDROW)
123 /* runs that don't contain real text */
124 #define MERF_NOTEXT (MERF_GRAPHICS|MERF_TAB|MERF_ENDPARA|MERF_ENDROW)
126 /* those flags are kept when the row is split */
127 #define MERF_SPLITMASK (~(0))
129 /******************************** para flags *************************/
131 /* this paragraph was already wrapped and hasn't changed, every change resets that flag */
132 #define MEPF_REWRAP 0x01
134 #define MEPF_CELL 0x04 /* The paragraph is nested in a cell */
135 #define MEPF_ROWSTART 0x08 /* Hidden empty paragraph at the start of the row */
136 #define MEPF_ROWEND 0x10 /* Visible empty paragraph at the end of the row */
138 /******************************** structures *************************/
140 struct tagME_DisplayItem;
142 typedef struct tagME_Run
145 struct tagME_Paragraph *para; /* ptr to the run's paragraph */
146 int nCharOfs; /* relative to para's offset */
147 int len; /* length of run's text */
148 int nWidth; /* width of full run, width of leading&trailing ws */
150 int nAscent, nDescent; /* pixels above/below baseline */
151 POINT pt; /* relative to para's position */
152 REOBJECT *ole_obj; /* FIXME: should be a union with strText (at least) */
155 typedef struct tagME_Border
161 typedef struct tagME_BorderRect
169 typedef struct tagME_Paragraph
174 struct tagME_DisplayItem *pCell; /* v4.1 */
175 ME_BorderRect border;
182 struct tagME_DisplayItem *prev_para, *next_para;
185 typedef struct tagME_Cell /* v4.1 */
187 int nNestingLevel; /* 0 for normal cells, and greater for nested cells */
189 ME_BorderRect border;
192 int yTextOffset; /* The text offset is caused by the largest top border. */
193 struct tagME_DisplayItem *prev_cell, *next_cell, *parent_cell;
196 typedef struct tagME_Row
206 /* the display item list layout is like this:
207 * - the document consists of paragraphs
208 * - each paragraph contains at least one run, the last run in the paragraph
209 * is an end-of-paragraph run
210 * - each formatted paragraph contains at least one row, which corresponds
211 * to a screen line (that's why there are no rows in an unformatted
213 * - the paragraphs contain "shortcut" pointers to the previous and the next
214 * paragraph, that makes iteration over paragraphs faster
215 * - the list starts with diTextStart and ends with diTextEnd
218 typedef struct tagME_DisplayItem
221 struct tagME_DisplayItem *prev, *next;
230 typedef struct tagME_TextBuffer
232 ME_DisplayItem *pFirst, *pLast;
233 ME_Style *pCharStyle;
234 ME_Style *pDefaultStyle;
237 typedef struct tagME_Cursor
239 ME_DisplayItem *pPara;
240 ME_DisplayItem *pRun;
259 undo_end_transaction, /* marks the end of a group of changes for undo */
260 undo_potential_end_transaction /* allows grouping typed chars for undo */
263 struct insert_run_item
271 struct delete_run_item
276 struct join_paras_item
281 struct split_para_item
285 ME_BorderRect border;
288 ME_BorderRect cell_border;
289 int cell_right_boundary;
292 struct set_para_fmt_item
296 ME_BorderRect border;
299 struct set_char_fmt_item
311 struct insert_run_item insert_run;
312 struct delete_run_item delete_run;
313 struct join_paras_item join_paras;
314 struct split_para_item split_para;
315 struct set_para_fmt_item set_para_fmt;
316 struct set_char_fmt_item set_char_fmt;
328 typedef struct tagME_FontTableItem {
334 #define STREAMIN_BUFFER_SIZE 4096 /* M$ compatibility */
336 struct tagME_InStream {
337 EDITSTREAM *editstream;
340 char buffer[STREAMIN_BUFFER_SIZE];
342 typedef struct tagME_InStream ME_InStream;
345 #define STREAMOUT_BUFFER_SIZE 4096
346 #define STREAMOUT_FONTTBL_SIZE 8192
347 #define STREAMOUT_COLORTBL_SIZE 1024
349 typedef struct tagME_OutStream {
351 char buffer[STREAMOUT_BUFFER_SIZE];
355 ME_FontTableItem fonttbl[STREAMOUT_FONTTBL_SIZE];
357 COLORREF colortbl[STREAMOUT_COLORTBL_SIZE];
359 UINT nDefaultCodePage;
360 /* nNestingLevel = 0 means we aren't in a cell, 1 means we are in a cell,
361 * an greater numbers mean we are in a cell nested within a cell. */
365 typedef struct tagME_FontCacheItem
373 #define HFONT_CACHE_SIZE 10
375 typedef struct tagME_TextEditor
377 HWND hWnd, hwndParent;
379 BOOL bEmulateVersion10;
380 ME_TextBuffer *pBuffer;
386 int nTotalLength, nLastTotalLength;
387 int nTotalWidth, nLastTotalWidth;
388 int nAvailWidth; /* 0 = wrap to client area, else wrap width in twips */
390 COLORREF rgbBackColor;
391 HBRUSH hbrBackground;
395 struct list undo_stack;
396 struct list redo_stack;
399 ME_UndoMode nUndoMode;
401 int nLastSelStart, nLastSelEnd;
402 ME_DisplayItem *pLastSelStartPara, *pLastSelEndPara;
403 ME_FontCacheItem pFontCache[HFONT_CACHE_SIZE];
404 int nZoomNumerator, nZoomDenominator;
407 BOOL bDefaultFormatRect;
410 EDITWORDBREAKPROCW pfnWordBreak;
411 LPRICHEDITOLECALLBACK lpOleCallback;
412 /*TEXTMODE variable; contains only one of each of the following options:
413 *TM_RICHTEXT or TM_PLAINTEXT
414 *TM_SINGLELEVELUNDO or TM_MULTILEVELUNDO
415 *TM_SINGLECODEPAGE or TM_MULTICODEPAGE*/
418 BOOL AutoURLDetect_bEnable;
421 BOOL bDialogMode; /* Indicates that we are inside a dialog window */
424 DWORD selofs; /* The size of the selection bar on the left side of control */
425 ME_SelectionType nSelectionType;
427 /* Track previous notified selection */
428 CHARRANGE notified_cr;
430 /* Cache previously set scrollbar info */
431 SCROLLINFO vert_si, horz_si;
436 typedef struct tagME_Context
444 /* those are valid inside ME_WrapTextParagraph and related */
445 ME_TextEditor *editor;
448 typedef struct tagME_WrapContext
452 int nLeftMargin, nRightMargin, nFirstMargin;
456 BOOL bOverflown, bWordWrap;
457 ME_DisplayItem *pPara;
458 ME_DisplayItem *pRowStart;
460 ME_DisplayItem *pLastSplittableRun;