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 /* the "end of paragraph" run, contains 1 character */
122 #define MERF_ENDPARA 0x100000
123 /* forcing the "end of row" run, contains 1 character */
124 #define MERF_ENDROW 0x200000
126 #define MERF_HIDDEN 0x400000
127 /* start of a table row has an empty paragraph that should be skipped over. */
128 #define MERF_TABLESTART 0x800000 /* v4.1 */
130 /* runs with any of these flags set cannot be joined */
131 #define MERF_NOJOIN (MERF_GRAPHICS|MERF_TAB|MERF_ENDPARA|MERF_ENDROW)
132 /* runs that don't contain real text */
133 #define MERF_NOTEXT (MERF_GRAPHICS|MERF_TAB|MERF_ENDPARA|MERF_ENDROW)
135 /* those flags are kept when the row is split */
136 #define MERF_SPLITMASK (~(0))
138 /******************************** para flags *************************/
140 /* this paragraph was already wrapped and hasn't changed, every change resets that flag */
141 #define MEPF_REWRAP 0x01
142 #define MEPF_REPAINT 0x02
144 #define MEPF_CELL 0x04 /* The paragraph is nested in a cell */
145 #define MEPF_ROWSTART 0x08 /* Hidden empty paragraph at the start of the row */
146 #define MEPF_ROWEND 0x10 /* Visible empty paragraph at the end of the row */
148 /******************************** structures *************************/
150 struct tagME_DisplayItem;
152 typedef struct tagME_Run
156 int nCharOfs; /* relative to para's offset */
157 int nWidth; /* width of full run, width of leading&trailing ws */
159 int nAscent, nDescent; /* pixels above/below baseline */
160 POINT pt; /* relative to para's position */
161 REOBJECT *ole_obj; /* FIXME: should be a union with strText (at least) */
164 typedef struct tagME_Border
170 typedef struct tagME_BorderRect
178 typedef struct tagME_Paragraph
182 struct tagME_DisplayItem *pCell; /* v4.1 */
183 ME_BorderRect border;
189 int nLastPaintYPos, nLastPaintHeight;
191 struct tagME_DisplayItem *prev_para, *next_para;
194 typedef struct tagME_Cell /* v4.1 */
196 int nNestingLevel; /* 0 for normal cells, and greater for nested cells */
198 ME_BorderRect border;
201 int yTextOffset; /* The text offset is caused by the largest top border. */
202 struct tagME_DisplayItem *prev_cell, *next_cell, *parent_cell;
205 typedef struct tagME_Row
215 /* the display item list layout is like this:
216 * - the document consists of paragraphs
217 * - each paragraph contains at least one run, the last run in the paragraph
218 * is an end-of-paragraph run
219 * - each formatted paragraph contains at least one row, which corresponds
220 * to a screen line (that's why there are no rows in an unformatted
222 * - the paragraphs contain "shortcut" pointers to the previous and the next
223 * paragraph, that makes iteration over paragraphs faster
224 * - the list starts with diTextStart and ends with diTextEnd
227 typedef struct tagME_DisplayItem
230 struct tagME_DisplayItem *prev, *next;
236 ME_Style *ustyle; /* used by diUndoSetCharFormat */
240 typedef struct tagME_UndoItem
244 ME_String *eol_str; /* used by diUndoSplitParagraph */
247 typedef struct tagME_TextBuffer
249 ME_DisplayItem *pFirst, *pLast;
250 ME_Style *pCharStyle;
251 ME_Style *pDefaultStyle;
254 typedef struct tagME_Cursor
256 ME_DisplayItem *pPara;
257 ME_DisplayItem *pRun;
276 typedef struct tagME_FontTableItem {
282 #define STREAMIN_BUFFER_SIZE 4096 /* M$ compatibility */
284 struct tagME_InStream {
285 EDITSTREAM *editstream;
288 char buffer[STREAMIN_BUFFER_SIZE];
290 typedef struct tagME_InStream ME_InStream;
293 #define STREAMOUT_BUFFER_SIZE 4096
294 #define STREAMOUT_FONTTBL_SIZE 8192
295 #define STREAMOUT_COLORTBL_SIZE 1024
297 typedef struct tagME_OutStream {
299 char buffer[STREAMOUT_BUFFER_SIZE];
303 ME_FontTableItem fonttbl[STREAMOUT_FONTTBL_SIZE];
305 COLORREF colortbl[STREAMOUT_COLORTBL_SIZE];
307 UINT nDefaultCodePage;
308 /* nNestingLevel = 0 means we aren't in a cell, 1 means we are in a cell,
309 * an greater numbers mean we are in a cell nested within a cell. */
313 typedef struct tagME_FontCacheItem
321 #define HFONT_CACHE_SIZE 10
323 typedef struct tagME_TextEditor
325 HWND hWnd, hwndParent;
327 BOOL bEmulateVersion10;
328 ME_TextBuffer *pBuffer;
334 int nTotalLength, nLastTotalLength;
335 int nTotalWidth, nLastTotalWidth;
336 int nAvailWidth; /* 0 = wrap to client area, else wrap width in twips */
339 COLORREF rgbBackColor;
340 HBRUSH hbrBackground;
344 ME_DisplayItem *pUndoStack, *pRedoStack, *pUndoStackBottom;
347 ME_UndoMode nUndoMode;
349 int nLastSelStart, nLastSelEnd;
350 ME_DisplayItem *pLastSelStartPara, *pLastSelEndPara;
351 ME_FontCacheItem pFontCache[HFONT_CACHE_SIZE];
352 int nZoomNumerator, nZoomDenominator;
355 BOOL bDefaultFormatRect;
358 EDITWORDBREAKPROCW pfnWordBreak;
359 LPRICHEDITOLECALLBACK lpOleCallback;
360 /*TEXTMODE variable; contains only one of each of the following options:
361 *TM_RICHTEXT or TM_PLAINTEXT
362 *TM_SINGLELEVELUNDO or TM_MULTILEVELUNDO
363 *TM_SINGLECODEPAGE or TM_MULTICODEPAGE*/
366 BOOL AutoURLDetect_bEnable;
369 BOOL bDialogMode; /* Indicates that we are inside a dialog window */
372 DWORD selofs; /* The size of the selection bar on the left side of control */
373 ME_SelectionType nSelectionType;
375 /* Track previous notified selection */
376 CHARRANGE notified_cr;
378 /* Cache previously set scrollbar info */
379 SCROLLINFO vert_si, horz_si;
384 typedef struct tagME_Context
394 /* those are valid inside ME_WrapTextParagraph and related */
396 ME_TextEditor *editor;
400 typedef struct tagME_WrapContext
404 int nLeftMargin, nRightMargin, nFirstMargin;
408 BOOL bOverflown, bWordWrap;
409 ME_DisplayItem *pPara;
410 ME_DisplayItem *pRowStart;
412 ME_DisplayItem *pLastSplittableRun;