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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
25 #define _WIN32_IE 0x0400
45 #include "wine/debug.h"
47 typedef struct tagME_String
53 typedef struct tagME_Style
57 HFONT hFont; /* cached font for the style */
58 TEXTMETRICW tm; /* cached font metrics for the style */
59 int nRefs; /* reference count */
60 int nSequence; /* incremented when cache needs to be rebuilt, ie. every screen redraw */
64 diTextStart, /* start of the text buffer */
65 diParagraph, /* paragraph start */
66 diRun, /* run (sequence of chars with the same character format) */
67 diStartRow, /* start of the row (line of text on the screen) */
68 diTextEnd, /* end of the text buffer */
70 /********************* these below are meant for finding only *********************/
71 diStartRowOrParagraph, /* 5 */
72 diStartRowOrParagraphOrEnd,
76 diRunOrParagraphOrEnd, /* 10 */
78 diUndoInsertRun, /* 11 */
79 diUndoDeleteRun, /* 12 */
80 diUndoJoinParagraphs, /* 13 */
81 diUndoSplitParagraph, /* 14 */
82 diUndoSetParagraphFormat, /* 15 */
83 diUndoSetCharFormat, /* 16 */
84 diUndoEndTransaction, /* 17 */
85 diUndoSetDefaultCharFormat, /* 18 */
88 /******************************** run flags *************************/
89 #define MERF_STYLEFLAGS 0x0FFF
90 /* run contains non-text content, which has its own rules for wrapping, sizing etc */
91 #define MERF_GRAPHICS 1
92 /* run is a tab (or, in future, any kind of content whose size is dependent on run position) */
95 /* run is splittable (contains white spaces in the middle or end) */
96 #define MERF_SPLITTABLE 0x001000
97 /* run starts with whitespaces */
98 #define MERF_STARTWHITE 0x002000
99 /* run ends with whitespaces */
100 #define MERF_ENDWHITE 0x004000
101 /* run is completely made of whitespaces */
102 #define MERF_WHITESPACE 0x008000
103 /* run is a last (dummy) run in the paragraph */
104 #define MERF_SKIPPED 0x010000
105 /* flags that are calculated during text wrapping */
106 #define MERF_CALCBYWRAP 0x0F0000
107 /* the "end of paragraph" run, contains 1 character */
108 #define MERF_ENDPARA 0x100000
110 #define MERF_HIDDEN 0x200000
112 /* runs with any of these flags set cannot be joined */
113 #define MERF_NOJOIN (MERF_GRAPHICS|MERF_TAB|MERF_ENDPARA)
114 /* runs that don't contain real text */
115 #define MERF_NOTEXT (MERF_GRAPHICS|MERF_TAB|MERF_ENDPARA)
117 /* those flags are kept when the row is split */
118 #define MERF_SPLITMASK (~(0))
120 /******************************** para flags *************************/
122 /* this paragraph was already wrapped and hasn't changed, every change resets that flag */
123 #define MEPF_REWRAP 1
124 #define MEPF_REPAINT 2
126 /******************************** structures *************************/
128 struct tagME_DisplayItem;
130 typedef struct tagME_Run
134 int nCharOfs; /* relative to para's offset */
135 int nWidth; /* width of full run, width of leading&trailing ws */
137 int nAscent, nDescent; /* pixels above/below baseline */
138 POINT pt; /* relative to para's position */
141 typedef struct tagME_Document {
142 struct tagME_DisplayItem *def_char_style;
143 struct tagME_DisplayItem *def_para_style;
144 int last_wrapped_line;
147 typedef struct tagME_Paragraph
150 int nLeftMargin, nRightMargin, nFirstMargin;
154 int nLastPaintYPos, nLastPaintHeight;
156 struct tagME_DisplayItem *prev_para, *next_para, *document;
159 typedef struct tagME_Row
169 /* the display item list layout is like this:
170 * - the document consists of paragraphs
171 * - each paragraph contains at least one run, the last run in the paragraph
172 * is an end-of-paragraph run
173 * - each formatted paragraph contains at least one row, which corresponds
174 * to a screen line (that's why there are no rows in an unformatted
176 * - the paragraphs contain "shortcut" pointers to the previous and the next
177 * paragraph, that makes iteration over paragraphs faster
178 * - the list starts with diTextStart and ends with diTextEnd
181 typedef struct tagME_DisplayItem
184 struct tagME_DisplayItem *prev, *next;
189 ME_Document doc; /* not used */
190 ME_Style *ustyle; /* used by diUndoSetCharFormat */
194 typedef struct tagME_UndoItem
200 typedef struct tagME_TextBuffer
202 ME_DisplayItem *pFirst, *pLast;
203 ME_Style *pCharStyle;
204 ME_Style *pDefaultStyle;
207 typedef struct tagME_Cursor
209 ME_DisplayItem *pRun;
220 typedef struct tagME_FontTableItem {
226 #define STREAMIN_BUFFER_SIZE 4096 /* M$ compatibility */
228 struct tagME_InStream {
229 EDITSTREAM *editstream;
232 char buffer[STREAMIN_BUFFER_SIZE];
234 typedef struct tagME_InStream ME_InStream;
237 #define STREAMOUT_BUFFER_SIZE 4096
238 #define STREAMOUT_FONTTBL_SIZE 8192
239 #define STREAMOUT_COLORTBL_SIZE 1024
241 typedef struct tagME_OutStream {
243 char buffer[STREAMOUT_BUFFER_SIZE];
247 ME_FontTableItem fonttbl[STREAMOUT_FONTTBL_SIZE];
249 COLORREF colortbl[STREAMOUT_COLORTBL_SIZE];
251 UINT nDefaultCodePage;
254 typedef struct tagME_FontCacheItem
262 #define HFONT_CACHE_SIZE 10
264 typedef struct tagME_TextEditor
267 BOOL bEmulateVersion10;
269 ME_TextBuffer *pBuffer;
273 int nTotalLength, nLastTotalLength;
276 int nOldSelFrom, nOldSelTo;
277 COLORREF rgbBackColor;
278 HBRUSH hbrBackground;
282 ME_DisplayItem *pUndoStack, *pRedoStack;
283 ME_UndoMode nUndoMode;
285 int nLastSelStart, nLastSelEnd;
286 ME_FontCacheItem pFontCache[HFONT_CACHE_SIZE];
287 ME_OutStream *pStream;
288 BOOL bScrollX, bScrollY;
290 int nZoomNumerator, nZoomDenominator;
294 EDITWORDBREAKPROCW pfnWordBreak;
295 LPRICHEDITOLECALLBACK lpOleCallback;
298 typedef struct tagME_Context
306 /* those are valid inside ME_WrapTextParagraph and related */
308 ME_TextEditor *editor;
312 typedef struct tagME_WrapContext
316 int nLeftMargin, nRightMargin, nFirstMargin;
317 int nTotalWidth, nAvailWidth;
321 ME_DisplayItem *pRowStart;
323 ME_DisplayItem *pLastSplittableRun;
324 POINT ptLastSplittableRun;