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"
54 extern const struct ITextHostVtbl itextHostStdcallVtbl;
57 typedef struct tagME_String
63 typedef struct tagME_Style
67 HFONT hFont; /* cached font for the style */
68 TEXTMETRICW tm; /* cached font metrics for the style */
69 int nRefs; /* reference count */
74 diTextStart, /* start of the text buffer */
75 diParagraph, /* paragraph start */
76 diCell, /* cell start */
77 diRun, /* run (sequence of chars with the same character format) */
78 diStartRow, /* start of the row (line of text on the screen) */
79 diTextEnd, /* end of the text buffer */
81 /********************* these below are meant for finding only *********************/
82 diStartRowOrParagraph, /* 7 */
83 diStartRowOrParagraphOrEnd,
87 diRunOrParagraphOrEnd, /* 12 */
89 diUndoInsertRun, /* 13 */
90 diUndoDeleteRun, /* 14 */
91 diUndoJoinParagraphs, /* 15 */
92 diUndoSplitParagraph, /* 16 */
93 diUndoSetParagraphFormat, /* 17 */
94 diUndoSetCharFormat, /* 18 */
95 diUndoEndTransaction, /* 19 - marks the end of a group of changes for undo */
96 diUndoPotentialEndTransaction, /* 20 - allows grouping typed chars for undo */
99 #define SELECTIONBAR_WIDTH 8
101 /******************************** run flags *************************/
102 #define MERF_STYLEFLAGS 0x0FFF
103 /* run contains non-text content, which has its own rules for wrapping, sizing etc */
104 #define MERF_GRAPHICS 0x001
105 /* run is a tab (or, in future, any kind of content whose size is dependent on run position) */
106 #define MERF_TAB 0x002
107 /* run is a cell boundary */
108 #define MERF_ENDCELL 0x004 /* v4.1 */
110 #define MERF_NONTEXT (MERF_GRAPHICS | MERF_TAB | MERF_ENDCELL)
112 /* run is splittable (contains white spaces in the middle or end) */
113 #define MERF_SPLITTABLE 0x001000
114 /* run starts with whitespaces */
115 #define MERF_STARTWHITE 0x002000
116 /* run ends with whitespaces */
117 #define MERF_ENDWHITE 0x004000
118 /* run is completely made of whitespaces */
119 #define MERF_WHITESPACE 0x008000
120 /* the "end of paragraph" run, contains 1 character */
121 #define MERF_ENDPARA 0x100000
122 /* forcing the "end of row" run, contains 1 character */
123 #define MERF_ENDROW 0x200000
125 #define MERF_HIDDEN 0x400000
126 /* start of a table row has an empty paragraph that should be skipped over. */
127 #define MERF_TABLESTART 0x800000 /* v4.1 */
129 /* runs with any of these flags set cannot be joined */
130 #define MERF_NOJOIN (MERF_GRAPHICS|MERF_TAB|MERF_ENDPARA|MERF_ENDROW)
131 /* runs that don't contain real text */
132 #define MERF_NOTEXT (MERF_GRAPHICS|MERF_TAB|MERF_ENDPARA|MERF_ENDROW)
134 /* those flags are kept when the row is split */
135 #define MERF_SPLITMASK (~(0))
137 /******************************** para flags *************************/
139 /* this paragraph was already wrapped and hasn't changed, every change resets that flag */
140 #define MEPF_REWRAP 0x01
142 #define MEPF_CELL 0x04 /* The paragraph is nested in a cell */
143 #define MEPF_ROWSTART 0x08 /* Hidden empty paragraph at the start of the row */
144 #define MEPF_ROWEND 0x10 /* Visible empty paragraph at the end of the row */
146 /******************************** structures *************************/
148 struct tagME_DisplayItem;
150 typedef struct tagME_Run
154 int nCharOfs; /* relative to para's offset */
155 int nWidth; /* width of full run, width of leading&trailing ws */
157 int nAscent, nDescent; /* pixels above/below baseline */
158 POINT pt; /* relative to para's position */
159 REOBJECT *ole_obj; /* FIXME: should be a union with strText (at least) */
162 typedef struct tagME_Border
168 typedef struct tagME_BorderRect
176 typedef struct tagME_Paragraph
180 struct tagME_DisplayItem *pCell; /* v4.1 */
181 ME_BorderRect border;
188 struct tagME_DisplayItem *prev_para, *next_para;
191 typedef struct tagME_Cell /* v4.1 */
193 int nNestingLevel; /* 0 for normal cells, and greater for nested cells */
195 ME_BorderRect border;
198 int yTextOffset; /* The text offset is caused by the largest top border. */
199 struct tagME_DisplayItem *prev_cell, *next_cell, *parent_cell;
202 typedef struct tagME_Row
212 /* the display item list layout is like this:
213 * - the document consists of paragraphs
214 * - each paragraph contains at least one run, the last run in the paragraph
215 * is an end-of-paragraph run
216 * - each formatted paragraph contains at least one row, which corresponds
217 * to a screen line (that's why there are no rows in an unformatted
219 * - the paragraphs contain "shortcut" pointers to the previous and the next
220 * paragraph, that makes iteration over paragraphs faster
221 * - the list starts with diTextStart and ends with diTextEnd
224 typedef struct tagME_DisplayItem
227 struct tagME_DisplayItem *prev, *next;
233 ME_Style *ustyle; /* used by diUndoSetCharFormat */
237 typedef struct tagME_UndoItem
241 ME_String *eol_str; /* used by diUndoSplitParagraph */
244 typedef struct tagME_TextBuffer
246 ME_DisplayItem *pFirst, *pLast;
247 ME_Style *pCharStyle;
248 ME_Style *pDefaultStyle;
251 typedef struct tagME_Cursor
253 ME_DisplayItem *pPara;
254 ME_DisplayItem *pRun;
273 typedef struct tagME_FontTableItem {
279 #define STREAMIN_BUFFER_SIZE 4096 /* M$ compatibility */
281 struct tagME_InStream {
282 EDITSTREAM *editstream;
285 char buffer[STREAMIN_BUFFER_SIZE];
287 typedef struct tagME_InStream ME_InStream;
290 #define STREAMOUT_BUFFER_SIZE 4096
291 #define STREAMOUT_FONTTBL_SIZE 8192
292 #define STREAMOUT_COLORTBL_SIZE 1024
294 typedef struct tagME_OutStream {
296 char buffer[STREAMOUT_BUFFER_SIZE];
300 ME_FontTableItem fonttbl[STREAMOUT_FONTTBL_SIZE];
302 COLORREF colortbl[STREAMOUT_COLORTBL_SIZE];
304 UINT nDefaultCodePage;
305 /* nNestingLevel = 0 means we aren't in a cell, 1 means we are in a cell,
306 * an greater numbers mean we are in a cell nested within a cell. */
310 typedef struct tagME_FontCacheItem
318 #define HFONT_CACHE_SIZE 10
320 typedef struct tagME_TextEditor
322 HWND hWnd, hwndParent;
324 BOOL bEmulateVersion10;
325 ME_TextBuffer *pBuffer;
331 int nTotalLength, nLastTotalLength;
332 int nTotalWidth, nLastTotalWidth;
333 int nAvailWidth; /* 0 = wrap to client area, else wrap width in twips */
335 COLORREF rgbBackColor;
336 HBRUSH hbrBackground;
340 ME_DisplayItem *pUndoStack, *pRedoStack, *pUndoStackBottom;
343 ME_UndoMode nUndoMode;
345 int nLastSelStart, nLastSelEnd;
346 ME_DisplayItem *pLastSelStartPara, *pLastSelEndPara;
347 ME_FontCacheItem pFontCache[HFONT_CACHE_SIZE];
348 int nZoomNumerator, nZoomDenominator;
351 BOOL bDefaultFormatRect;
354 EDITWORDBREAKPROCW pfnWordBreak;
355 LPRICHEDITOLECALLBACK lpOleCallback;
356 /*TEXTMODE variable; contains only one of each of the following options:
357 *TM_RICHTEXT or TM_PLAINTEXT
358 *TM_SINGLELEVELUNDO or TM_MULTILEVELUNDO
359 *TM_SINGLECODEPAGE or TM_MULTICODEPAGE*/
362 BOOL AutoURLDetect_bEnable;
365 BOOL bDialogMode; /* Indicates that we are inside a dialog window */
368 DWORD selofs; /* The size of the selection bar on the left side of control */
369 ME_SelectionType nSelectionType;
371 /* Track previous notified selection */
372 CHARRANGE notified_cr;
374 /* Cache previously set scrollbar info */
375 SCROLLINFO vert_si, horz_si;
380 typedef struct tagME_Context
388 /* those are valid inside ME_WrapTextParagraph and related */
389 ME_TextEditor *editor;
392 typedef struct tagME_WrapContext
396 int nLeftMargin, nRightMargin, nFirstMargin;
400 BOOL bOverflown, bWordWrap;
401 ME_DisplayItem *pPara;
402 ME_DisplayItem *pRowStart;
404 ME_DisplayItem *pLastSplittableRun;