1 /****************************************************************************
2 ** $Id: qt/qsyntaxhighlighter_p.h   3.3.8   edited Jan 11 14:39 $
3 **
4 ** Definition of the internal QSyntaxHighlighterInternal class
5 **
6 ** Created : 031111
7 **
8 ** Copyright (C) 1992-2007 Trolltech ASA.  All rights reserved.
9 **
10 ** This file is part of the widgets module of the Qt GUI Toolkit.
11 **
12 ** This file may be distributed under the terms of the Q Public License
13 ** as defined by Trolltech ASA of Norway and appearing in the file
14 ** LICENSE.QPL included in the packaging of this file.
15 **
16 ** This file may be distributed and/or modified under the terms of the
17 ** GNU General Public License version 2 as published by the Free Software
18 ** Foundation and appearing in the file LICENSE.GPL included in the
19 ** packaging of this file.
20 **
21 ** Licensees holding valid Qt Enterprise Edition or Qt Professional Edition
22 ** licenses may use this file in accordance with the Qt Commercial License
23 ** Agreement provided with the Software.
24 **
25 ** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
26 ** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
27 **
28 ** See http://www.trolltech.com/pricing.html or email sales@trolltech.com for
29 **   information about Qt Commercial License Agreements.
30 ** See http://www.trolltech.com/qpl/ for QPL licensing information.
31 ** See http://www.trolltech.com/gpl/ for GPL licensing information.
32 **
33 ** Contact info@trolltech.com if any conditions of this licensing are
34 ** not clear to you.
35 **
36 **********************************************************************/
37 
38 #ifndef QSYNTAXHIGHLIGHTER_P_H
39 #define QSYNTAXHIGHLIGHTER_P_H
40 
41 #ifndef QT_NO_SYNTAXHIGHLIGHTER
42 #include "qsyntaxhighlighter.h"
43 #include "private/qrichtext_p.h"
44 
45 class QSyntaxHighlighterPrivate
46 {
47 public:
QSyntaxHighlighterPrivate()48     QSyntaxHighlighterPrivate() :
49 	currentParagraph( -1 )
50 	{}
51 
52     int currentParagraph;
53 };
54 
55 class QSyntaxHighlighterInternal : public QTextPreProcessor
56 {
57 public:
QSyntaxHighlighterInternal(QSyntaxHighlighter * h)58     QSyntaxHighlighterInternal( QSyntaxHighlighter *h ) : highlighter( h ) {}
process(QTextDocument * doc,QTextParagraph * p,int,bool invalidate)59     void process( QTextDocument *doc, QTextParagraph *p, int, bool invalidate ) {
60 	if ( p->prev() && p->prev()->endState() == -1 )
61 	    process( doc, p->prev(), 0, FALSE );
62 
63 	highlighter->para = p;
64 	QString text = p->string()->toString();
65 	int endState = p->prev() ? p->prev()->endState() : -2;
66 	int oldEndState = p->endState();
67 	highlighter->d->currentParagraph = p->paragId();
68 	p->setEndState( highlighter->highlightParagraph( text, endState ) );
69 	highlighter->d->currentParagraph = -1;
70 	highlighter->para = 0;
71 
72 	p->setFirstPreProcess( FALSE );
73 	QTextParagraph *op = p;
74 	p = p->next();
75 	if ( (!!oldEndState || !!op->endState()) && oldEndState != op->endState() &&
76 	     invalidate && p && !p->firstPreProcess() && p->endState() != -1 ) {
77 	    while ( p ) {
78 		if ( p->endState() == -1 )
79 		    return;
80 		p->setEndState( -1 );
81 		p = p->next();
82 	    }
83 	}
84     }
format(int)85     QTextFormat *format( int ) { return 0; }
86 
87 private:
88     QSyntaxHighlighter *highlighter;
89 
90     friend class QTextEdit;
91 };
92 
93 #endif // QT_NO_SYNTAXHIGHLIGHTER
94 #endif // QSYNTAXHIGHLIGHTER_P_H
95