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 - marks the end of a group of changes for undo */
89 diUndoSetDefaultCharFormat, /* 18 */
90 diUndoPotentialEndTransaction, /* 19 - allows grouping typed chars for undo */
93 #define SELECTIONBAR_WIDTH 9
95 /******************************** run flags *************************/
96 #define MERF_STYLEFLAGS 0x0FFF
97 /* run contains non-text content, which has its own rules for wrapping, sizing etc */
98 #define MERF_GRAPHICS 0x001
99 /* run is a tab (or, in future, any kind of content whose size is dependent on run position) */
100 #define MERF_TAB 0x002
101 /* run is a cell boundary */
102 #define MERF_CELL 0x004
104 #define MERF_NONTEXT (MERF_GRAPHICS | MERF_TAB | MERF_CELL)
106 /* run is splittable (contains white spaces in the middle or end) */
107 #define MERF_SPLITTABLE 0x001000
108 /* run starts with whitespaces */
109 #define MERF_STARTWHITE 0x002000
110 /* run ends with whitespaces */
111 #define MERF_ENDWHITE 0x004000
112 /* run is completely made of whitespaces */
113 #define MERF_WHITESPACE 0x008000
114 /* run is a last (dummy) run in the paragraph */
115 #define MERF_SKIPPED 0x010000
116 /* flags that are calculated during text wrapping */
117 #define MERF_CALCBYWRAP 0x0F0000
118 /* the "end of paragraph" run, contains 1 character */
119 #define MERF_ENDPARA 0x100000
120 /* forcing the "end of row" run, contains 1 character */
121 #define MERF_ENDROW 0x200000
123 #define MERF_HIDDEN 0x400000
125 /* runs with any of these flags set cannot be joined */
126 #define MERF_NOJOIN (MERF_GRAPHICS|MERF_TAB|MERF_ENDPARA|MERF_ENDROW)
127 /* runs that don't contain real text */
128 #define MERF_NOTEXT (MERF_GRAPHICS|MERF_TAB|MERF_ENDPARA|MERF_ENDROW)
130 /* those flags are kept when the row is split */
131 #define MERF_SPLITMASK (~(0))
133 /******************************** para flags *************************/
135 /* this paragraph was already wrapped and hasn't changed, every change resets that flag */
136 #define MEPF_REWRAP 1
137 #define MEPF_REPAINT 2
139 /******************************** structures *************************/
141 struct tagME_DisplayItem;
143 typedef struct tagME_Run
147 int nCharOfs; /* relative to para's offset */
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 struct tagME_TableCell *pCell; /* for MERF_CELL: points to respective cell in ME_Paragraph */
153 REOBJECT *ole_obj; /* FIXME: should be a union with strText (at least) */
154 int nCR; int nLF; /* for MERF_ENDPARA: number of \r and \n characters encoded by run */
157 typedef struct tagME_Document {
158 struct tagME_DisplayItem *def_char_style;
159 struct tagME_DisplayItem *def_para_style;
160 int last_wrapped_line;
163 typedef struct tagME_TableCell
166 struct tagME_TableCell *next;
169 typedef struct tagME_Paragraph
173 struct tagME_TableCell *pCells; /* list of cells and their properties */
174 struct tagME_TableCell *pLastCell; /* points to the last cell in the list */
179 int nLastPaintYPos, nLastPaintHeight;
181 struct tagME_DisplayItem *prev_para, *next_para, *document;
184 typedef struct tagME_Row
194 /* the display item list layout is like this:
195 * - the document consists of paragraphs
196 * - each paragraph contains at least one run, the last run in the paragraph
197 * is an end-of-paragraph run
198 * - each formatted paragraph contains at least one row, which corresponds
199 * to a screen line (that's why there are no rows in an unformatted
201 * - the paragraphs contain "shortcut" pointers to the previous and the next
202 * paragraph, that makes iteration over paragraphs faster
203 * - the list starts with diTextStart and ends with diTextEnd
206 typedef struct tagME_DisplayItem
209 struct tagME_DisplayItem *prev, *next;
214 ME_Document doc; /* not used */
215 ME_Style *ustyle; /* used by diUndoSetCharFormat */
219 typedef struct tagME_UndoItem
223 int nCR, nLF; /* used by diUndoSplitParagraph */
226 typedef struct tagME_TextBuffer
228 ME_DisplayItem *pFirst, *pLast;
229 ME_Style *pCharStyle;
230 ME_Style *pDefaultStyle;
233 typedef struct tagME_Cursor
235 ME_DisplayItem *pRun;
254 typedef struct tagME_FontTableItem {
260 #define STREAMIN_BUFFER_SIZE 4096 /* M$ compatibility */
262 struct tagME_InStream {
263 EDITSTREAM *editstream;
266 char buffer[STREAMIN_BUFFER_SIZE];
268 typedef struct tagME_InStream ME_InStream;
271 #define STREAMOUT_BUFFER_SIZE 4096
272 #define STREAMOUT_FONTTBL_SIZE 8192
273 #define STREAMOUT_COLORTBL_SIZE 1024
275 typedef struct tagME_OutStream {
277 char buffer[STREAMOUT_BUFFER_SIZE];
281 ME_FontTableItem fonttbl[STREAMOUT_FONTTBL_SIZE];
283 COLORREF colortbl[STREAMOUT_COLORTBL_SIZE];
285 UINT nDefaultCodePage;
288 typedef struct tagME_FontCacheItem
296 #define HFONT_CACHE_SIZE 10
298 typedef struct tagME_TextEditor
301 BOOL bEmulateVersion10;
302 ME_TextBuffer *pBuffer;
306 int nTotalLength, nLastTotalLength;
310 COLORREF rgbBackColor;
311 HBRUSH hbrBackground;
315 ME_DisplayItem *pUndoStack, *pRedoStack, *pUndoStackBottom;
318 ME_UndoMode nUndoMode;
320 int nLastSelStart, nLastSelEnd;
321 ME_DisplayItem *pLastSelStartPara, *pLastSelEndPara;
322 ME_FontCacheItem pFontCache[HFONT_CACHE_SIZE];
323 int nZoomNumerator, nZoomDenominator;
329 EDITWORDBREAKPROCW pfnWordBreak;
330 LPRICHEDITOLECALLBACK lpOleCallback;
331 /*TEXTMODE variable; contains only one of each of the following options:
332 *TM_RICHTEXT or TM_PLAINTEXT
333 *TM_SINGLELEVELUNDO or TM_MULTILEVELUNDO
334 *TM_SINGLECODEPAGE or TM_MULTICODEPAGE*/
337 BOOL AutoURLDetect_bEnable;
342 DWORD selofs; /* The size of the selection bar on the left side of control */
343 ME_SelectionType nSelectionType;
345 /* Track previous notified selection */
346 CHARRANGE notified_cr;
349 typedef struct tagME_Context
358 /* those are valid inside ME_WrapTextParagraph and related */
360 ME_TextEditor *editor;
364 typedef struct tagME_WrapContext
368 int nLeftMargin, nRightMargin, nFirstMargin;
373 ME_DisplayItem *pRowStart;
375 ME_DisplayItem *pLastSplittableRun;
376 POINT ptLastSplittableRun;