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
34 #define NONAMELESSUNION
35 #define NONAMELESSSTRUCT
48 #include "wine/debug.h"
50 typedef struct tagME_String
56 typedef struct tagME_Style
60 HFONT hFont; /* cached font for the style */
61 TEXTMETRICW tm; /* cached font metrics for the style */
62 int nRefs; /* reference count */
63 int nSequence; /* incremented when cache needs to be rebuilt, ie. every screen redraw */
68 diTextStart, /* start of the text buffer */
69 diParagraph, /* paragraph start */
70 diRun, /* run (sequence of chars with the same character format) */
71 diStartRow, /* start of the row (line of text on the screen) */
72 diTextEnd, /* end of the text buffer */
74 /********************* these below are meant for finding only *********************/
75 diStartRowOrParagraph, /* 5 */
76 diStartRowOrParagraphOrEnd,
80 diRunOrParagraphOrEnd, /* 10 */
82 diUndoInsertRun, /* 11 */
83 diUndoDeleteRun, /* 12 */
84 diUndoJoinParagraphs, /* 13 */
85 diUndoSplitParagraph, /* 14 */
86 diUndoSetParagraphFormat, /* 15 */
87 diUndoSetCharFormat, /* 16 */
88 diUndoEndTransaction, /* 17 */
89 diUndoSetDefaultCharFormat, /* 18 */
92 /******************************** run flags *************************/
93 #define MERF_STYLEFLAGS 0x0FFF
94 /* run contains non-text content, which has its own rules for wrapping, sizing etc */
95 #define MERF_GRAPHICS 0x001
96 /* run is a tab (or, in future, any kind of content whose size is dependent on run position) */
97 #define MERF_TAB 0x002
98 /* run is a cell boundary */
99 #define MERF_CELL 0x004
101 #define MERF_NONTEXT (MERF_GRAPHICS | MERF_TAB | MERF_CELL)
103 /* run is splittable (contains white spaces in the middle or end) */
104 #define MERF_SPLITTABLE 0x001000
105 /* run starts with whitespaces */
106 #define MERF_STARTWHITE 0x002000
107 /* run ends with whitespaces */
108 #define MERF_ENDWHITE 0x004000
109 /* run is completely made of whitespaces */
110 #define MERF_WHITESPACE 0x008000
111 /* run is a last (dummy) run in the paragraph */
112 #define MERF_SKIPPED 0x010000
113 /* flags that are calculated during text wrapping */
114 #define MERF_CALCBYWRAP 0x0F0000
115 /* the "end of paragraph" run, contains 1 character */
116 #define MERF_ENDPARA 0x100000
117 /* forcing the "end of row" run, contains 1 character */
118 #define MERF_ENDROW 0x200000
120 #define MERF_HIDDEN 0x400000
122 /* runs with any of these flags set cannot be joined */
123 #define MERF_NOJOIN (MERF_GRAPHICS|MERF_TAB|MERF_ENDPARA|MERF_ENDROW)
124 /* runs that don't contain real text */
125 #define MERF_NOTEXT (MERF_GRAPHICS|MERF_TAB|MERF_ENDPARA|MERF_ENDROW)
127 /* those flags are kept when the row is split */
128 #define MERF_SPLITMASK (~(0))
130 /******************************** para flags *************************/
132 /* this paragraph was already wrapped and hasn't changed, every change resets that flag */
133 #define MEPF_REWRAP 1
134 #define MEPF_REPAINT 2
136 /******************************** structures *************************/
138 struct tagME_DisplayItem;
140 typedef struct tagME_Run
144 int nCharOfs; /* relative to para's offset */
145 int nWidth; /* width of full run, width of leading&trailing ws */
147 int nAscent, nDescent; /* pixels above/below baseline */
148 POINT pt; /* relative to para's position */
149 struct tagME_TableCell *pCell; /* for MERF_CELL: points to respective cell in ME_Paragraph */
150 REOBJECT *ole_obj; /* FIXME: should be a union with strText (at least) */
151 int nCR; int nLF; /* for MERF_ENDPARA: number of \r and \n characters encoded by run */
154 typedef struct tagME_Document {
155 struct tagME_DisplayItem *def_char_style;
156 struct tagME_DisplayItem *def_para_style;
157 int last_wrapped_line;
160 typedef struct tagME_TableCell
163 struct tagME_TableCell *next;
166 typedef struct tagME_Paragraph
170 BOOL bTable; /* this paragraph is a table row */
171 struct tagME_TableCell *pCells; /* list of cells and their properties */
172 struct tagME_TableCell *pLastCell; /* points to the last cell in the list */
177 int nLastPaintYPos, nLastPaintHeight;
179 struct tagME_DisplayItem *prev_para, *next_para, *document;
182 typedef struct tagME_Row
192 /* the display item list layout is like this:
193 * - the document consists of paragraphs
194 * - each paragraph contains at least one run, the last run in the paragraph
195 * is an end-of-paragraph run
196 * - each formatted paragraph contains at least one row, which corresponds
197 * to a screen line (that's why there are no rows in an unformatted
199 * - the paragraphs contain "shortcut" pointers to the previous and the next
200 * paragraph, that makes iteration over paragraphs faster
201 * - the list starts with diTextStart and ends with diTextEnd
204 typedef struct tagME_DisplayItem
207 struct tagME_DisplayItem *prev, *next;
212 ME_Document doc; /* not used */
213 ME_Style *ustyle; /* used by diUndoSetCharFormat */
217 typedef struct tagME_UndoItem
221 int nCR, nLF; /* used by diUndoSplitParagraph */
224 typedef struct tagME_TextBuffer
226 ME_DisplayItem *pFirst, *pLast;
227 ME_Style *pCharStyle;
228 ME_Style *pDefaultStyle;
231 typedef struct tagME_Cursor
233 ME_DisplayItem *pRun;
244 typedef struct tagME_FontTableItem {
250 #define STREAMIN_BUFFER_SIZE 4096 /* M$ compatibility */
252 struct tagME_InStream {
253 EDITSTREAM *editstream;
256 char buffer[STREAMIN_BUFFER_SIZE];
258 typedef struct tagME_InStream ME_InStream;
261 #define STREAMOUT_BUFFER_SIZE 4096
262 #define STREAMOUT_FONTTBL_SIZE 8192
263 #define STREAMOUT_COLORTBL_SIZE 1024
265 typedef struct tagME_OutStream {
267 char buffer[STREAMOUT_BUFFER_SIZE];
271 ME_FontTableItem fonttbl[STREAMOUT_FONTTBL_SIZE];
273 COLORREF colortbl[STREAMOUT_COLORTBL_SIZE];
275 UINT nDefaultCodePage;
278 typedef struct tagME_FontCacheItem
286 #define HFONT_CACHE_SIZE 10
288 typedef struct tagME_TextEditor
291 BOOL bEmulateVersion10;
293 ME_TextBuffer *pBuffer;
297 int nTotalLength, nLastTotalLength;
301 COLORREF rgbBackColor;
302 HBRUSH hbrBackground;
306 ME_DisplayItem *pUndoStack, *pRedoStack, *pUndoStackBottom;
309 ME_UndoMode nUndoMode;
311 int nLastSelStart, nLastSelEnd;
312 ME_DisplayItem *pLastSelStartPara, *pLastSelEndPara;
313 ME_FontCacheItem pFontCache[HFONT_CACHE_SIZE];
314 int nZoomNumerator, nZoomDenominator;
320 EDITWORDBREAKPROCW pfnWordBreak;
321 LPRICHEDITOLECALLBACK lpOleCallback;
322 /*TEXTMODE variable; contains only one of each of the following options:
323 *TM_RICHTEXT or TM_PLAINTEXT
324 *TM_SINGLELEVELUNDO or TM_MULTILEVELUNDO
325 *TM_SINGLECODEPAGE or TM_MULTICODEPAGE*/
328 BOOL AutoURLDetect_bEnable;
333 DWORD selofs, linesel, sely;
335 /* Track previous notified selection */
336 CHARRANGE notified_cr;
339 typedef struct tagME_Context
348 /* those are valid inside ME_WrapTextParagraph and related */
350 ME_TextEditor *editor;
354 typedef struct tagME_WrapContext
358 int nLeftMargin, nRightMargin, nFirstMargin;
363 ME_DisplayItem *pRowStart;
365 ME_DisplayItem *pLastSplittableRun;
366 POINT ptLastSplittableRun;