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 */
70 int nSequence; /* incremented when cache needs to be rebuilt, ie. every screen redraw */
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 */
90 diUndoInsertRun, /* 13 */
91 diUndoDeleteRun, /* 14 */
92 diUndoJoinParagraphs, /* 15 */
93 diUndoSplitParagraph, /* 16 */
94 diUndoSetParagraphFormat, /* 17 */
95 diUndoSetCharFormat, /* 18 */
96 diUndoEndTransaction, /* 19 - marks the end of a group of changes for undo */
97 diUndoPotentialEndTransaction, /* 20 - allows grouping typed chars for undo */
100 #define SELECTIONBAR_WIDTH 8
102 /******************************** run flags *************************/
103 #define MERF_STYLEFLAGS 0x0FFF
104 /* run contains non-text content, which has its own rules for wrapping, sizing etc */
105 #define MERF_GRAPHICS 0x001
106 /* run is a tab (or, in future, any kind of content whose size is dependent on run position) */
107 #define MERF_TAB 0x002
108 /* run is a cell boundary */
109 #define MERF_ENDCELL 0x004 /* v4.1 */
111 #define MERF_NONTEXT (MERF_GRAPHICS | MERF_TAB | MERF_ENDCELL)
113 /* run is splittable (contains white spaces in the middle or end) */
114 #define MERF_SPLITTABLE 0x001000
115 /* run starts with whitespaces */
116 #define MERF_STARTWHITE 0x002000
117 /* run ends with whitespaces */
118 #define MERF_ENDWHITE 0x004000
119 /* run is completely made of whitespaces */
120 #define MERF_WHITESPACE 0x008000
121 /* run is a last (dummy) run in the paragraph */
122 #define MERF_SKIPPED 0x010000
123 /* flags that are calculated during text wrapping */
124 #define MERF_CALCBYWRAP 0x0F0000
125 /* the "end of paragraph" run, contains 1 character */
126 #define MERF_ENDPARA 0x100000
127 /* forcing the "end of row" run, contains 1 character */
128 #define MERF_ENDROW 0x200000
130 #define MERF_HIDDEN 0x400000
131 /* start of a table row has an empty paragraph that should be skipped over. */
132 #define MERF_TABLESTART 0x800000 /* v4.1 */
134 /* runs with any of these flags set cannot be joined */
135 #define MERF_NOJOIN (MERF_GRAPHICS|MERF_TAB|MERF_ENDPARA|MERF_ENDROW)
136 /* runs that don't contain real text */
137 #define MERF_NOTEXT (MERF_GRAPHICS|MERF_TAB|MERF_ENDPARA|MERF_ENDROW)
139 /* those flags are kept when the row is split */
140 #define MERF_SPLITMASK (~(0))
142 /******************************** para flags *************************/
144 /* this paragraph was already wrapped and hasn't changed, every change resets that flag */
145 #define MEPF_REWRAP 0x01
146 #define MEPF_REPAINT 0x02
148 #define MEPF_CELL 0x04 /* The paragraph is nested in a cell */
149 #define MEPF_ROWSTART 0x08 /* Hidden empty paragraph at the start of the row */
150 #define MEPF_ROWEND 0x10 /* Visible empty paragraph at the end of the row */
152 /******************************** structures *************************/
154 struct tagME_DisplayItem;
156 typedef struct tagME_Run
160 int nCharOfs; /* relative to para's offset */
161 int nWidth; /* width of full run, width of leading&trailing ws */
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) */
168 typedef struct tagME_Border
174 typedef struct tagME_BorderRect
182 typedef struct tagME_Paragraph
186 struct tagME_DisplayItem *pCell; /* v4.1 */
187 ME_BorderRect border;
193 int nLastPaintYPos, nLastPaintHeight;
195 struct tagME_DisplayItem *prev_para, *next_para;
198 typedef struct tagME_Cell /* v4.1 */
200 int nNestingLevel; /* 0 for normal cells, and greater for nested cells */
202 ME_BorderRect border;
205 int yTextOffset; /* The text offset is caused by the largest top border. */
206 struct tagME_DisplayItem *prev_cell, *next_cell, *parent_cell;
209 typedef struct tagME_Row
219 /* the display item list layout is like this:
220 * - the document consists of paragraphs
221 * - each paragraph contains at least one run, the last run in the paragraph
222 * is an end-of-paragraph run
223 * - each formatted paragraph contains at least one row, which corresponds
224 * to a screen line (that's why there are no rows in an unformatted
226 * - the paragraphs contain "shortcut" pointers to the previous and the next
227 * paragraph, that makes iteration over paragraphs faster
228 * - the list starts with diTextStart and ends with diTextEnd
231 typedef struct tagME_DisplayItem
234 struct tagME_DisplayItem *prev, *next;
240 ME_Style *ustyle; /* used by diUndoSetCharFormat */
244 typedef struct tagME_UndoItem
248 ME_String *eol_str; /* used by diUndoSplitParagraph */
251 typedef struct tagME_TextBuffer
253 ME_DisplayItem *pFirst, *pLast;
254 ME_Style *pCharStyle;
255 ME_Style *pDefaultStyle;
258 typedef struct tagME_Cursor
260 ME_DisplayItem *pPara;
261 ME_DisplayItem *pRun;
280 typedef struct tagME_FontTableItem {
286 #define STREAMIN_BUFFER_SIZE 4096 /* M$ compatibility */
288 struct tagME_InStream {
289 EDITSTREAM *editstream;
292 char buffer[STREAMIN_BUFFER_SIZE];
294 typedef struct tagME_InStream ME_InStream;
297 #define STREAMOUT_BUFFER_SIZE 4096
298 #define STREAMOUT_FONTTBL_SIZE 8192
299 #define STREAMOUT_COLORTBL_SIZE 1024
301 typedef struct tagME_OutStream {
303 char buffer[STREAMOUT_BUFFER_SIZE];
307 ME_FontTableItem fonttbl[STREAMOUT_FONTTBL_SIZE];
309 COLORREF colortbl[STREAMOUT_COLORTBL_SIZE];
311 UINT nDefaultCodePage;
312 /* nNestingLevel = 0 means we aren't in a cell, 1 means we are in a cell,
313 * an greater numbers mean we are in a cell nested within a cell. */
317 typedef struct tagME_FontCacheItem
325 #define HFONT_CACHE_SIZE 10
327 typedef struct tagME_TextEditor
329 HWND hWnd, hwndParent;
331 BOOL bEmulateVersion10;
332 ME_TextBuffer *pBuffer;
338 int nTotalLength, nLastTotalLength;
339 int nTotalWidth, nLastTotalWidth;
340 int nAvailWidth; /* 0 = wrap to client area, else wrap width in twips */
343 COLORREF rgbBackColor;
344 HBRUSH hbrBackground;
348 ME_DisplayItem *pUndoStack, *pRedoStack, *pUndoStackBottom;
351 ME_UndoMode nUndoMode;
353 int nLastSelStart, nLastSelEnd;
354 ME_DisplayItem *pLastSelStartPara, *pLastSelEndPara;
355 ME_FontCacheItem pFontCache[HFONT_CACHE_SIZE];
356 int nZoomNumerator, nZoomDenominator;
359 BOOL bDefaultFormatRect;
362 EDITWORDBREAKPROCW pfnWordBreak;
363 LPRICHEDITOLECALLBACK lpOleCallback;
364 /*TEXTMODE variable; contains only one of each of the following options:
365 *TM_RICHTEXT or TM_PLAINTEXT
366 *TM_SINGLELEVELUNDO or TM_MULTILEVELUNDO
367 *TM_SINGLECODEPAGE or TM_MULTICODEPAGE*/
370 BOOL AutoURLDetect_bEnable;
373 BOOL bDialogMode; /* Indicates that we are inside a dialog window */
376 DWORD selofs; /* The size of the selection bar on the left side of control */
377 ME_SelectionType nSelectionType;
379 /* Track previous notified selection */
380 CHARRANGE notified_cr;
382 /* Cache previously set scrollbar info */
383 SCROLLINFO vert_si, horz_si;
388 typedef struct tagME_Context
398 /* those are valid inside ME_WrapTextParagraph and related */
400 ME_TextEditor *editor;
404 typedef struct tagME_WrapContext
408 int nLeftMargin, nRightMargin, nFirstMargin;
412 BOOL bOverflown, bWordWrap;
413 ME_DisplayItem *pPara;
414 ME_DisplayItem *pRowStart;
416 ME_DisplayItem *pLastSplittableRun;
417 POINT ptLastSplittableRun;