1 /*
2 * RichEdit - structures and constant
3 *
4 * Copyright 2004 by Krzysztof Foltman
5 *
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.
10 *
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.
15 *
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
19 */
20
21 #ifndef __EDITSTR_H
22 #define __EDITSTR_H
23
24 #ifndef _WIN32_IE
25 #define _WIN32_IE 0x0400
26 #endif
27
28 #include <assert.h>
29 #include <stdarg.h>
30 #include <stdio.h>
31 #include <stdlib.h>
32 #include <limits.h>
33
34 #define COBJMACROS
35 #define NONAMELESSUNION
36 #define NONAMELESSSTRUCT
37
38 #include <windef.h>
39 #include <winbase.h>
40 #include <winnls.h>
41 #include <winnt.h>
42 #include <wingdi.h>
43 #include <winuser.h>
44 #include <richedit.h>
45 #include <commctrl.h>
46 #include <ole2.h>
47 #include <richole.h>
48 #include "imm.h"
49 #include <textserv.h>
50
51 #include "wine/debug.h"
52
53 #ifdef __i386__
54 extern const struct ITextHostVtbl itextHostStdcallVtbl;
55 #endif /* __i386__ */
56
57 typedef struct tagME_String
58 {
59 WCHAR *szData;
60 int nLen, nBuffer;
61 } ME_String;
62
63 typedef struct tagME_Style
64 {
65 CHARFORMAT2W fmt;
66
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 */
71 } ME_Style;
72
73 typedef enum {
74 diInvalid,
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 */
81
82 /********************* these below are meant for finding only *********************/
83 diStartRowOrParagraph, /* 7 */
84 diStartRowOrParagraphOrEnd,
85 diRunOrParagraph,
86 diRunOrStartRow,
87 diParagraphOrEnd,
88 diRunOrParagraphOrEnd, /* 12 */
89
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 */
98 } ME_DIType;
99
100 #define SELECTIONBAR_WIDTH 8
101
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 */
110
111 #define MERF_NONTEXT (MERF_GRAPHICS | MERF_TAB | MERF_ENDCELL)
112
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
125 /* run is hidden */
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 */
129
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)
134
135 /* those flags are kept when the row is split */
136 #define MERF_SPLITMASK (~(0))
137
138 /******************************** para flags *************************/
139
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
143 /* v4.1 */
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 */
147
148 /******************************** structures *************************/
149
150 struct tagME_DisplayItem;
151
152 typedef struct tagME_Run
153 {
154 ME_String *strText;
155 ME_Style *style;
156 int nCharOfs; /* relative to para's offset */
157 int nWidth; /* width of full run, width of leading&trailing ws */
158 int nFlags;
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) */
162 } ME_Run;
163
164 typedef struct tagME_Border
165 {
166 int width;
167 COLORREF colorRef;
168 } ME_Border;
169
170 typedef struct tagME_BorderRect
171 {
172 ME_Border top;
173 ME_Border left;
174 ME_Border bottom;
175 ME_Border right;
176 } ME_BorderRect;
177
178 typedef struct tagME_Paragraph
179 {
180 PARAFORMAT2 *pFmt;
181
182 struct tagME_DisplayItem *pCell; /* v4.1 */
183 ME_BorderRect border;
184
185 int nCharOfs;
186 int nFlags;
187 POINT pt;
188 int nHeight, nWidth;
189 int nLastPaintYPos, nLastPaintHeight;
190 int nRows;
191 struct tagME_DisplayItem *prev_para, *next_para;
192 } ME_Paragraph;
193
194 typedef struct tagME_Cell /* v4.1 */
195 {
196 int nNestingLevel; /* 0 for normal cells, and greater for nested cells */
197 int nRightBoundary;
198 ME_BorderRect border;
199 POINT pt;
200 int nHeight, nWidth;
201 int yTextOffset; /* The text offset is caused by the largest top border. */
202 struct tagME_DisplayItem *prev_cell, *next_cell, *parent_cell;
203 } ME_Cell;
204
205 typedef struct tagME_Row
206 {
207 int nHeight;
208 int nBaseline;
209 int nWidth;
210 int nLMargin;
211 int nRMargin;
212 POINT pt;
213 } ME_Row;
214
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
221 * paragraph
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
225 */
226
227 typedef struct tagME_DisplayItem
228 {
229 ME_DIType type;
230 struct tagME_DisplayItem *prev, *next;
231 union {
232 ME_Run run;
233 ME_Row row;
234 ME_Cell cell;
235 ME_Paragraph para;
236 ME_Style *ustyle; /* used by diUndoSetCharFormat */
237 } member;
238 } ME_DisplayItem;
239
240 typedef struct tagME_UndoItem
241 {
242 ME_DisplayItem di;
243 int nStart, nLen;
244 ME_String *eol_str; /* used by diUndoSplitParagraph */
245 } ME_UndoItem;
246
247 typedef struct tagME_TextBuffer
248 {
249 ME_DisplayItem *pFirst, *pLast;
250 ME_Style *pCharStyle;
251 ME_Style *pDefaultStyle;
252 } ME_TextBuffer;
253
254 typedef struct tagME_Cursor
255 {
256 ME_DisplayItem *pPara;
257 ME_DisplayItem *pRun;
258 int nOffset;
259 } ME_Cursor;
260
261 typedef enum {
262 umAddToUndo,
263 umAddToRedo,
264 umIgnore,
265 umAddBackToUndo
266 } ME_UndoMode;
267
268 typedef enum {
269 stPosition = 0,
270 stWord,
271 stLine,
272 stParagraph,
273 stDocument
274 } ME_SelectionType;
275
276 typedef struct tagME_FontTableItem {
277 BYTE bCharSet;
278 WCHAR *szFaceName;
279 } ME_FontTableItem;
280
281
282 #define STREAMIN_BUFFER_SIZE 4096 /* M$ compatibility */
283
284 struct tagME_InStream {
285 EDITSTREAM *editstream;
286 DWORD dwSize;
287 DWORD dwUsed;
288 char buffer[STREAMIN_BUFFER_SIZE];
289 };
290 typedef struct tagME_InStream ME_InStream;
291
292
293 #define STREAMOUT_BUFFER_SIZE 4096
294 #define STREAMOUT_FONTTBL_SIZE 8192
295 #define STREAMOUT_COLORTBL_SIZE 1024
296
297 typedef struct tagME_OutStream {
298 EDITSTREAM *stream;
299 char buffer[STREAMOUT_BUFFER_SIZE];
300 UINT pos, written;
301 UINT nCodePage;
302 UINT nFontTblLen;
303 ME_FontTableItem fonttbl[STREAMOUT_FONTTBL_SIZE];
304 UINT nColorTblLen;
305 COLORREF colortbl[STREAMOUT_COLORTBL_SIZE];
306 UINT nDefaultFont;
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. */
310 UINT nNestingLevel;
311 } ME_OutStream;
312
313 typedef struct tagME_FontCacheItem
314 {
315 LOGFONTW lfSpecs;
316 HFONT hFont;
317 int nRefs;
318 int nAge;
319 } ME_FontCacheItem;
320
321 #define HFONT_CACHE_SIZE 10
322
323 typedef struct tagME_TextEditor
324 {
325 HWND hWnd, hwndParent;
326 ITextHost *texthost;
327 BOOL bEmulateVersion10;
328 ME_TextBuffer *pBuffer;
329 ME_Cursor *pCursors;
330 DWORD styleFlags;
331 DWORD exStyleFlags;
332 int nCursors;
333 SIZE sizeWindow;
334 int nTotalLength, nLastTotalLength;
335 int nTotalWidth, nLastTotalWidth;
336 int nAvailWidth; /* 0 = wrap to client area, else wrap width in twips */
337 int nUDArrowX;
338 int nSequence;
339 COLORREF rgbBackColor;
340 HBRUSH hbrBackground;
341 BOOL bCaretAtEnd;
342 int nEventMask;
343 int nModifyStep;
344 ME_DisplayItem *pUndoStack, *pRedoStack, *pUndoStackBottom;
345 int nUndoStackSize;
346 int nUndoLimit;
347 ME_UndoMode nUndoMode;
348 int nParagraphs;
349 int nLastSelStart, nLastSelEnd;
350 ME_DisplayItem *pLastSelStartPara, *pLastSelEndPara;
351 ME_FontCacheItem pFontCache[HFONT_CACHE_SIZE];
352 int nZoomNumerator, nZoomDenominator;
353 RECT prevClientRect;
354 RECT rcFormat;
355 BOOL bDefaultFormatRect;
356 BOOL bWordWrap;
357 int nTextLimit;
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*/
364 int mode;
365 BOOL bHideSelection;
366 BOOL AutoURLDetect_bEnable;
367 WCHAR cPasswordMask;
368 BOOL bHaveFocus;
369 BOOL bDialogMode; /* Indicates that we are inside a dialog window */
370 /*for IME */
371 int imeStartIndex;
372 DWORD selofs; /* The size of the selection bar on the left side of control */
373 ME_SelectionType nSelectionType;
374
375 /* Track previous notified selection */
376 CHARRANGE notified_cr;
377
378 /* Cache previously set scrollbar info */
379 SCROLLINFO vert_si, horz_si;
380
381 BOOL bMouseCaptured;
382 } ME_TextEditor;
383
384 typedef struct tagME_Context
385 {
386 HDC hDC;
387 POINT pt;
388 POINT ptRowOffset;
389 RECT rcView;
390 HBRUSH hbrMargin;
391 SIZE dpi;
392 int nAvailWidth;
393
394 /* those are valid inside ME_WrapTextParagraph and related */
395 POINT ptFirstRun;
396 ME_TextEditor *editor;
397 int nSequence;
398 } ME_Context;
399
400 typedef struct tagME_WrapContext
401 {
402 ME_Style *style;
403 ME_Context *context;
404 int nLeftMargin, nRightMargin, nFirstMargin;
405 int nAvailWidth;
406 int nRow;
407 POINT pt;
408 BOOL bOverflown, bWordWrap;
409 ME_DisplayItem *pPara;
410 ME_DisplayItem *pRowStart;
411
412 ME_DisplayItem *pLastSplittableRun;
413 } ME_WrapContext;
414
415 #endif
416
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