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 diUndoPotentialEndTransaction, /* 18 - allows grouping typed chars for undo */
92 #define SELECTIONBAR_WIDTH 9
94 /******************************** run flags *************************/
95 #define MERF_STYLEFLAGS 0x0FFF
96 /* run contains non-text content, which has its own rules for wrapping, sizing etc */
97 #define MERF_GRAPHICS 0x001
98 /* run is a tab (or, in future, any kind of content whose size is dependent on run position) */
99 #define MERF_TAB 0x002
101 #define MERF_NONTEXT (MERF_GRAPHICS | MERF_TAB)
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 REOBJECT *ole_obj; /* FIXME: should be a union with strText (at least) */
150 int nCR; int nLF; /* for MERF_ENDPARA: number of \r and \n characters encoded by run */
153 typedef struct tagME_Document {
154 struct tagME_DisplayItem *def_char_style;
155 struct tagME_DisplayItem *def_para_style;
156 int last_wrapped_line;
159 typedef struct tagME_Paragraph
166 int nLastPaintYPos, nLastPaintHeight;
168 struct tagME_DisplayItem *prev_para, *next_para, *document;
171 typedef struct tagME_Row
181 /* the display item list layout is like this:
182 * - the document consists of paragraphs
183 * - each paragraph contains at least one run, the last run in the paragraph
184 * is an end-of-paragraph run
185 * - each formatted paragraph contains at least one row, which corresponds
186 * to a screen line (that's why there are no rows in an unformatted
188 * - the paragraphs contain "shortcut" pointers to the previous and the next
189 * paragraph, that makes iteration over paragraphs faster
190 * - the list starts with diTextStart and ends with diTextEnd
193 typedef struct tagME_DisplayItem
196 struct tagME_DisplayItem *prev, *next;
201 ME_Document doc; /* not used */
202 ME_Style *ustyle; /* used by diUndoSetCharFormat */
206 typedef struct tagME_UndoItem
210 int nCR, nLF; /* used by diUndoSplitParagraph */
213 typedef struct tagME_TextBuffer
215 ME_DisplayItem *pFirst, *pLast;
216 ME_Style *pCharStyle;
217 ME_Style *pDefaultStyle;
220 typedef struct tagME_Cursor
222 ME_DisplayItem *pRun;
241 typedef struct tagME_FontTableItem {
247 #define STREAMIN_BUFFER_SIZE 4096 /* M$ compatibility */
249 struct tagME_InStream {
250 EDITSTREAM *editstream;
253 char buffer[STREAMIN_BUFFER_SIZE];
255 typedef struct tagME_InStream ME_InStream;
258 #define STREAMOUT_BUFFER_SIZE 4096
259 #define STREAMOUT_FONTTBL_SIZE 8192
260 #define STREAMOUT_COLORTBL_SIZE 1024
262 typedef struct tagME_OutStream {
264 char buffer[STREAMOUT_BUFFER_SIZE];
268 ME_FontTableItem fonttbl[STREAMOUT_FONTTBL_SIZE];
270 COLORREF colortbl[STREAMOUT_COLORTBL_SIZE];
272 UINT nDefaultCodePage;
275 typedef struct tagME_FontCacheItem
283 #define HFONT_CACHE_SIZE 10
285 typedef struct tagME_TextEditor
288 BOOL bEmulateVersion10;
289 ME_TextBuffer *pBuffer;
293 int nTotalLength, nLastTotalLength;
297 COLORREF rgbBackColor;
298 HBRUSH hbrBackground;
302 ME_DisplayItem *pUndoStack, *pRedoStack, *pUndoStackBottom;
305 ME_UndoMode nUndoMode;
307 int nLastSelStart, nLastSelEnd;
308 ME_DisplayItem *pLastSelStartPara, *pLastSelEndPara;
309 ME_FontCacheItem pFontCache[HFONT_CACHE_SIZE];
310 int nZoomNumerator, nZoomDenominator;
316 EDITWORDBREAKPROCW pfnWordBreak;
317 LPRICHEDITOLECALLBACK lpOleCallback;
318 /*TEXTMODE variable; contains only one of each of the following options:
319 *TM_RICHTEXT or TM_PLAINTEXT
320 *TM_SINGLELEVELUNDO or TM_MULTILEVELUNDO
321 *TM_SINGLECODEPAGE or TM_MULTICODEPAGE*/
324 BOOL AutoURLDetect_bEnable;
329 DWORD selofs; /* The size of the selection bar on the left side of control */
330 ME_SelectionType nSelectionType;
332 /* Track previous notified selection */
333 CHARRANGE notified_cr;
335 /* Cache previously set vertical scrollbar info */
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;