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307 lines
7.4 KiB
C
307 lines
7.4 KiB
C
/*
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* RichEdit - structures and constant
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*
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* Copyright 2004 by Krzysztof Foltman
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#ifndef __EDITSTR_H
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#define __EDITSTR_H
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#ifndef _WIN32_IE
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#define _WIN32_IE 0x0400
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#endif
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#include <assert.h>
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#include <stdarg.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <windef.h>
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#include <winbase.h>
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#include <winnls.h>
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#include <winnt.h>
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#include <wingdi.h>
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#include <winuser.h>
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#include <richedit.h>
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#include <commctrl.h>
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#include "wine/debug.h"
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typedef struct tagME_String
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{
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WCHAR *szData;
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int nLen, nBuffer;
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} ME_String;
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typedef struct tagME_Style
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{
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CHARFORMAT2W fmt;
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HFONT hFont; /* cached font for the style */
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TEXTMETRICW tm; /* cached font metrics for the style */
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int nRefs; /* reference count */
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int nSequence; /* incremented when cache needs to be rebuilt, ie. every screen redraw */
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} ME_Style;
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typedef enum {
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diTextStart, /* start of the text buffer */
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diParagraph, /* paragraph start */
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diRun, /* run (sequence of chars with the same character format) */
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diStartRow, /* start of the row (line of text on the screen) */
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diTextEnd, /* end of the text buffer */
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/********************* these below are meant for finding only *********************/
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diStartRowOrParagraph, /* 5 */
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diStartRowOrParagraphOrEnd,
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diRunOrParagraph,
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diRunOrStartRow,
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diParagraphOrEnd,
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diRunOrParagraphOrEnd, /* 10 */
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diUndoInsertRun, /* 11 */
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diUndoDeleteRun, /* 12 */
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diUndoJoinParagraphs, /* 13 */
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diUndoSplitParagraph, /* 14 */
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diUndoSetParagraphFormat, /* 15 */
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diUndoSetCharFormat, /* 16 */
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diUndoEndTransaction, /* 17 */
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diUndoSetDefaultCharFormat, /* 18 */
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} ME_DIType;
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/******************************** run flags *************************/
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#define MERF_STYLEFLAGS 0x0FFF
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/* run contains non-text content, which has its own rules for wrapping, sizing etc */
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#define MERF_GRAPHICS 1
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/* run is a tab (or, in future, any kind of content whose size is dependent on run position) */
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#define MERF_TAB 2
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/* run is splittable (contains white spaces in the middle or end) */
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#define MERF_SPLITTABLE 0x001000
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/* run starts with whitespaces */
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#define MERF_STARTWHITE 0x002000
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/* run ends with whitespaces */
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#define MERF_ENDWHITE 0x004000
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/* run is completely made of whitespaces */
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#define MERF_WHITESPACE 0x008000
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/* run is a last (dummy) run in the paragraph */
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#define MERF_SKIPPED 0x010000
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/* flags that are calculated during text wrapping */
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#define MERF_CALCBYWRAP 0x0F0000
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/* the "end of paragraph" run, contains 1 character */
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#define MERF_ENDPARA 0x100000
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/* runs with any of these flags set cannot be joined */
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#define MERF_NOJOIN (MERF_GRAPHICS|MERF_TAB|MERF_ENDPARA)
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/* runs that don't contain real text */
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#define MERF_NOTEXT (MERF_GRAPHICS|MERF_TAB|MERF_ENDPARA)
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/* those flags are kept when the row is split */
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#define MERF_SPLITMASK (~(0))
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/******************************** para flags *************************/
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/* this paragraph was already wrapped and hasn't changed, every change resets that flag */
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#define MEPF_REWRAP 1
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#define MEPF_REPAINT 2
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/******************************** structures *************************/
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struct tagME_DisplayItem;
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typedef struct tagME_Run
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{
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ME_String *strText;
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ME_Style *style;
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int nCharOfs; /* relative to para's offset */
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int nWidth; /* width of full run, width of leading&trailing ws */
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int nFlags;
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int nAscent, nDescent; /* pixels above/below baseline */
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POINT pt; /* relative to para's position */
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} ME_Run;
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typedef struct tagME_Document {
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struct tagME_DisplayItem *def_char_style;
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struct tagME_DisplayItem *def_para_style;
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int last_wrapped_line;
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} ME_Document;
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typedef struct tagME_Paragraph
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{
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PARAFORMAT2 *pFmt;
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int nLeftMargin, nRightMargin, nFirstMargin;
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int nCharOfs;
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int nFlags;
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int nYPos, nHeight;
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int nLastPaintYPos, nLastPaintHeight;
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int nRows;
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struct tagME_DisplayItem *prev_para, *next_para, *document;
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} ME_Paragraph;
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typedef struct tagME_Row
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{
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int nHeight;
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int nBaseline;
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int nWidth;
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int nLMargin;
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int nRMargin;
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int nYPos;
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} ME_Row;
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typedef struct tagME_DisplayItem
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{
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ME_DIType type;
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struct tagME_DisplayItem *prev, *next;
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union {
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ME_Run run;
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ME_Row row;
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ME_Paragraph para;
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ME_Document doc; /* not used */
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ME_Style *ustyle; /* used by diUndoSetCharFormat */
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} member;
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} ME_DisplayItem;
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typedef struct tagME_UndoItem
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{
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ME_DisplayItem di;
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int nStart, nLen;
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} ME_UndoItem;
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typedef struct tagME_TextBuffer
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{
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ME_DisplayItem *pFirst, *pLast;
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ME_Style *pCharStyle;
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ME_Style *pDefaultStyle;
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} ME_TextBuffer;
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typedef struct tagME_Cursor
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{
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ME_DisplayItem *pRun;
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int nOffset;
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} ME_Cursor;
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typedef enum {
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umAddToUndo,
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umAddToRedo,
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umIgnore,
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umAddBackToUndo
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} ME_UndoMode;
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typedef struct tagME_FontTableItem {
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BYTE bCharSet;
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WCHAR *szFaceName;
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} ME_FontTableItem;
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#define STREAMIN_BUFFER_SIZE 4096 /* M$ compatibility */
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struct tagME_InStream {
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EDITSTREAM *editstream;
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DWORD dwSize;
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DWORD dwUsed;
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BYTE buffer[STREAMIN_BUFFER_SIZE];
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};
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typedef struct tagME_InStream ME_InStream;
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#define STREAMOUT_BUFFER_SIZE 4096
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#define STREAMOUT_FONTTBL_SIZE 8192
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#define STREAMOUT_COLORTBL_SIZE 1024
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typedef struct tagME_OutStream {
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EDITSTREAM *stream;
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char buffer[STREAMOUT_BUFFER_SIZE];
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UINT pos, written;
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UINT nCodePage;
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UINT nFontTblLen;
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ME_FontTableItem fonttbl[STREAMOUT_FONTTBL_SIZE];
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UINT nColorTblLen;
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COLORREF colortbl[STREAMOUT_COLORTBL_SIZE];
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UINT nDefaultFont;
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UINT nDefaultCodePage;
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} ME_OutStream;
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typedef struct tagME_FontCacheItem
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{
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LOGFONTW lfSpecs;
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HFONT hFont;
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int nRefs;
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int nAge;
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} ME_FontCacheItem;
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#define HFONT_CACHE_SIZE 10
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typedef struct tagME_TextEditor
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{
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HWND hWnd;
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BOOL bEmulateVersion10;
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BOOL bCaretShown;
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ME_TextBuffer *pBuffer;
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ME_Cursor *pCursors;
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int nCursors;
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SIZE sizeWindow;
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int nTotalLength, nLastTotalLength;
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int nUDArrowX;
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int nSequence;
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int nOldSelFrom, nOldSelTo;
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COLORREF rgbBackColor;
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BOOL bCaretAtEnd;
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int nEventMask;
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int nModifyStep;
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ME_DisplayItem *pUndoStack, *pRedoStack;
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ME_UndoMode nUndoMode;
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int nParagraphs;
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int nLastSelStart, nLastSelEnd;
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ME_FontCacheItem pFontCache[HFONT_CACHE_SIZE];
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ME_OutStream *pStream;
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BOOL bScrollX, bScrollY;
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int nScrollPosY;
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int nZoomNumerator, nZoomDenominator;
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RECT rcFormat;
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BOOL bRedraw;
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} ME_TextEditor;
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typedef struct tagME_Context
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{
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HDC hDC;
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POINT pt;
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POINT ptRowOffset;
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RECT rcView;
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HBRUSH hbrMargin;
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/* those are valid inside ME_WrapTextParagraph and related */
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POINT ptFirstRun;
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ME_TextEditor *editor;
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int nSequence;
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} ME_Context;
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typedef struct tagME_WrapContext
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{
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ME_Style *style;
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ME_Context *context;
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int nLeftMargin, nRightMargin, nFirstMargin;
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int nTotalWidth, nAvailWidth;
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int nRow;
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POINT pt;
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BOOL bOverflown;
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ME_DisplayItem *pRowStart;
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ME_DisplayItem *pLastSplittableRun;
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POINT ptLastSplittableRun;
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} ME_WrapContext;
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#endif
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