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82e102107c
Before a single length was used for the number of characters to retrieve from the text, and to keep track of the size of the buffer. These are not equivalent, since there is a possible end of line conversion.
420 lines
11 KiB
C
420 lines
11 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, 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 <limits.h>
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#define COBJMACROS
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#define NONAMELESSUNION
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#define NONAMELESSSTRUCT
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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 <ole2.h>
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#include <richole.h>
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#include "imm.h"
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#include <textserv.h>
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#include "wine/debug.h"
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#ifdef __i386__
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extern struct ITextHostVtbl itextHostStdcallVtbl;
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#endif /* __i386__ */
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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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diInvalid,
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diTextStart, /* start of the text buffer */
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diParagraph, /* paragraph start */
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diCell, /* cell 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, /* 7 */
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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, /* 12 */
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diUndoInsertRun, /* 13 */
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diUndoDeleteRun, /* 14 */
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diUndoJoinParagraphs, /* 15 */
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diUndoSplitParagraph, /* 16 */
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diUndoSetParagraphFormat, /* 17 */
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diUndoSetCharFormat, /* 18 */
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diUndoEndTransaction, /* 19 - marks the end of a group of changes for undo */
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diUndoPotentialEndTransaction, /* 20 - allows grouping typed chars for undo */
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} ME_DIType;
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#define SELECTIONBAR_WIDTH 8
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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 0x001
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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 0x002
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/* run is a cell boundary */
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#define MERF_ENDCELL 0x004 /* v4.1 */
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#define MERF_NONTEXT (MERF_GRAPHICS | MERF_TAB | MERF_ENDCELL)
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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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/* forcing the "end of row" run, contains 1 character */
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#define MERF_ENDROW 0x200000
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/* run is hidden */
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#define MERF_HIDDEN 0x400000
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/* start of a table row has an empty paragraph that should be skipped over. */
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#define MERF_TABLESTART 0x800000 /* v4.1 */
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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|MERF_ENDROW)
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/* runs that don't contain real text */
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#define MERF_NOTEXT (MERF_GRAPHICS|MERF_TAB|MERF_ENDPARA|MERF_ENDROW)
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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 0x01
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#define MEPF_REPAINT 0x02
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/* v4.1 */
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#define MEPF_CELL 0x04 /* The paragraph is nested in a cell */
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#define MEPF_ROWSTART 0x08 /* Hidden empty paragraph at the start of the row */
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#define MEPF_ROWEND 0x10 /* Visible empty paragraph at the end of the row */
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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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REOBJECT *ole_obj; /* FIXME: should be a union with strText (at least) */
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} ME_Run;
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typedef struct tagME_Border
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{
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int width;
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COLORREF colorRef;
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} ME_Border;
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typedef struct tagME_BorderRect
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{
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ME_Border top;
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ME_Border left;
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ME_Border bottom;
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ME_Border right;
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} ME_BorderRect;
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typedef struct tagME_Paragraph
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{
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PARAFORMAT2 *pFmt;
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struct tagME_DisplayItem *pCell; /* v4.1 */
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ME_BorderRect border;
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int nCharOfs;
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int nFlags;
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POINT pt;
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int nHeight, nWidth;
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int nLastPaintYPos, nLastPaintHeight;
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int nRows;
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struct tagME_DisplayItem *prev_para, *next_para;
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} ME_Paragraph;
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typedef struct tagME_Cell /* v4.1 */
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{
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int nNestingLevel; /* 0 for normal cells, and greater for nested cells */
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int nRightBoundary;
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ME_BorderRect border;
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POINT pt;
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int nHeight, nWidth;
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int yTextOffset; /* The text offset is caused by the largest top border. */
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struct tagME_DisplayItem *prev_cell, *next_cell, *parent_cell;
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} ME_Cell;
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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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POINT pt;
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} ME_Row;
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/* the display item list layout is like this:
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* - the document consists of paragraphs
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* - each paragraph contains at least one run, the last run in the paragraph
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* is an end-of-paragraph run
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* - each formatted paragraph contains at least one row, which corresponds
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* to a screen line (that's why there are no rows in an unformatted
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* paragraph
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* - the paragraphs contain "shortcut" pointers to the previous and the next
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* paragraph, that makes iteration over paragraphs faster
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* - the list starts with diTextStart and ends with diTextEnd
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*/
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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_Cell cell;
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ME_Paragraph para;
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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_String *eol_str; /* used by diUndoSplitParagraph */
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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 *pPara;
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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 enum {
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stPosition = 0,
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stWord,
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stLine,
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stParagraph,
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stDocument
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} ME_SelectionType;
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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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char 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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/* nNestingLevel = 0 means we aren't in a cell, 1 means we are in a cell,
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* an greater numbers mean we are in a cell nested within a cell. */
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UINT nNestingLevel;
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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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ITextHost *texthost;
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BOOL bEmulateVersion10;
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ME_TextBuffer *pBuffer;
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ME_Cursor *pCursors;
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DWORD styleFlags;
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DWORD exStyleFlags;
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int nCursors;
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SIZE sizeWindow;
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int nTotalLength, nLastTotalLength;
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int nTotalWidth, nLastTotalWidth;
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int nAvailWidth; /* 0 = wrap to client area, else wrap width in twips */
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int nUDArrowX;
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int nSequence;
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COLORREF rgbBackColor;
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HBRUSH hbrBackground;
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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, *pUndoStackBottom;
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int nUndoStackSize;
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int nUndoLimit;
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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_DisplayItem *pLastSelStartPara, *pLastSelEndPara;
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ME_FontCacheItem pFontCache[HFONT_CACHE_SIZE];
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int nZoomNumerator, nZoomDenominator;
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RECT prevClientRect;
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RECT rcFormat;
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BOOL bDefaultFormatRect;
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BOOL bWordWrap;
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int nTextLimit;
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EDITWORDBREAKPROCW pfnWordBreak;
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LPRICHEDITOLECALLBACK lpOleCallback;
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/*TEXTMODE variable; contains only one of each of the following options:
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*TM_RICHTEXT or TM_PLAINTEXT
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*TM_SINGLELEVELUNDO or TM_MULTILEVELUNDO
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*TM_SINGLECODEPAGE or TM_MULTICODEPAGE*/
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int mode;
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BOOL bHideSelection;
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BOOL AutoURLDetect_bEnable;
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WCHAR cPasswordMask;
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BOOL bHaveFocus;
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/*for IME */
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int imeStartIndex;
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DWORD selofs; /* The size of the selection bar on the left side of control */
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ME_SelectionType nSelectionType;
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/* Track previous notified selection */
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CHARRANGE notified_cr;
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/* Cache previously set scrollbar info */
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SCROLLINFO vert_si, horz_si;
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BOOL bMouseCaptured;
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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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SIZE dpi;
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int nAvailWidth;
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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 nAvailWidth;
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int nRow;
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POINT pt;
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BOOL bOverflown, bWordWrap;
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ME_DisplayItem *pPara;
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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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